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Evaluation of the Effect of Zinc isoctanoate on Polymer Processing Stability

2月 13th, 2025 News

Overview of zinc isoctanoate and its application in polymer processing

Zinc 2-ethylhexanoate, with the chemical formula Zn(C8H15O2)2, is a common organic zinc compound. It consists of zinc ions and two isocitate anions, with good thermal and chemical stability. Zinc isoctanoate is widely used in the field of polymer processing, especially in materials such as plastics, rubbers and coatings, and is used as a thermal stabilizer, catalyst and crosslinking agent. Its main function is to improve the processing stability of polymers and the performance of final products.

In polymer processing, thermal degradation is a common problem, especially when extrusion, injection molding or blow molding processes under high temperature conditions, the polymer molecular chain may break or cross-link, resulting in product Performance degraded. Zinc isoctanoate inhibits the formation of free radicals by reacting with active groups in the polymer, thereby effectively preventing the occurrence of thermal degradation. In addition, zinc isoctanoate can also work in concert with other additives to further enhance the heat resistance and mechanical properties of the polymer.

Product parameters of zinc isocitate

To better understand the application of zinc isoctanoate in polymer processing, the following are its main physical and chemical parameters:

parameter name parameter value Remarks
Molecular formula Zn(C8H15O2)2 –
Molecular Weight 356.94 g/mol –
Density 1.17 g/cm³ 20°C
Melting point 100-105°C –
Boiling point >300°C –
Solution Insoluble in water, easy to soluble in organic solvents such as A, etc.
Thermal Stability Stable at high temperature, decomposition temperature>200°C –
Color White to light yellow powder or liquid Depending on purity and preparationMethod
pH value 6.0-7.5 Aqueous Solution
Refractive 1.48-1.50 20°C

The high thermal stability and good solubility of zinc isoctanoate make it an ideal additive in polymer processing. It can not only remain stable at high temperatures, but also be well compatible with other additives (such as antioxidants, lubricants, etc.), ensuring the smooth progress of the polymer during processing.

Application Fields of Zinc Isooctanoate

Zinc isoctanoate is widely used in polymer processing, mainly including the following aspects:

  1. Heat stabilizer: Zinc isoctanoate can effectively inhibit the thermal degradation of polymers at high temperatures and extend the service life of the material. It is particularly suitable for the processing of polyvinyl chloride (PVC), polyolefins (such as PE, PP) and other thermally sensitive polymers.

  2. Catalytics: In the cross-linking reaction of certain polymers, zinc isoctanoate can serve as a catalyst to promote the reaction between the cross-linking agent and polymer molecules, thereby improving the mechanical strength of the material and Heat resistance. For example, zinc isoctanoate is often used as a catalyst during crosslinking of silicone rubbers.

  3. Lutrient: Zinc isoctanoate has certain lubricating properties, which can reduce the friction of polymers in processing equipment, reduce energy consumption and extend the life of the equipment. It is especially suitable for extrusion and injection molding processes.

  4. Antioxidants: Zinc isooctanoate can prevent the polymer from oxidizing and degrading during processing and storage, thereby improving the antioxidant properties of the material.

  5. Crosslinking agent: In some polymer systems, zinc isoctanoate can be used as a crosslinking agent to promote cross-linking reactions between molecular chains, form a three-dimensional network structure, and thus improve the material’s Mechanical properties and heat resistance.

To sum up, zinc isoctanoate has a variety of functions in polymer processing, which can significantly improve the processing stability of materials and the performance of final products. Next, we will discuss in detail the effect of zinc isoctanoate on polymer processing stability, and analyze its mechanism and effect based on experimental data and literature research.

Specific effect of zinc isoctanoate on polymer processing stability

Zinc isooctanoate, as an important additive, has thermal stability and machine of materials during polymer processing.Mechanical properties and processing fluidity have significant impacts. The specific impact of zinc isoctanoate on polymer processing stability will be analyzed in detail from multiple angles below, and relevant literature will be cited to support these conclusions.

1. Effects of thermal stability

Polymers are prone to thermal degradation during high-temperature processing, resulting in problems such as molecular chain fracture, color changes, and decline in mechanical properties. As a highly effective thermal stabilizer, zinc isoctanoate can effectively inhibit the occurrence of these adverse phenomena. Its main mechanism of action includes the following aspects:

  1. Free Radical Capture: Zinc isooctanoate can react with free radicals produced by polymers at high temperatures, preventing the chain reaction caused by free radicals, thereby preventing the breakage and cross-linking of molecular chains. Studies have shown that the thermal stability effect of zinc isoctanoate in PVC processing is particularly obvious. According to the study of Baker et al. (2017), after heating the PVC sample with zinc isoctanoate for 1 hour at 200°C, its thermal weight loss rate was only 2.5%, while the thermal weight loss rate of the control group without zinc isoctanoate reached More than 10%. This shows that zinc isooctanoate significantly improves the thermal stability of PVC.

  2. Catalytic Effect of Metal Ions: The zinc ions in zinc isoctanoate can react with halogen or other active groups in the polymer to form stable complexes, thereby reducing harmful by-products Generation of . For example, in PVC processing, zinc ions can react with hydrogen chloride (HCl) to produce harmless zinc chloride (ZnCl2), thereby avoiding further corrosion of the polymer by HCl. This mechanism was verified by Kumar et al. (2018) who observed during PVC processing that the release of HCl was significantly reduced after adding zinc isoctanoate, and the thermal stability of the material was significantly improved.

  3. Antioxidation properties: Zinc isoctanoate also has a certain antioxidant capacity, which can prevent the polymer from oxidative degradation during processing and storage. According to Chen et al. (2019), polypropylene (PP) samples with zinc isooctanoate showed better antioxidant properties in accelerated aging tests, and their tensile strength and impact strength were after 1000 hours of aging tests The control group that did not add zinc isoctanoate showed a significant performance decline.

2. Influence of mechanical properties

Zinc isoctanoate can not only improve the thermal stability of the polymer, but also have a positive impact on its mechanical properties. Specifically manifested as:

  1. Increasing Tensile Strength and Modulus: Zinc isocaprylate can promote cross-linking reactions between polymer molecular chains, forming a tighter network structure, thereby improving the materialtensile strength and modulus of the material. According to the study of Li et al. (2020), polyurethane (PU) elastomers with zinc isooctanoate added showed higher fracture strength and elastic modulus in tensile tests, which were respectively improved compared with the control group without zinc isooctanoate added, respectively. 20% and 15%. This suggests that zinc isoctanoate helps to improve the mechanical strength and rigidity of the polymer.

  2. Improving impact strength: Zinc isoctanoate can also improve the impact toughness of the material by regulating the molecular structure of the polymer. Research shows that zinc isoctanoate can promote the orderly arrangement of polymer molecular chains, reduce defects and stress concentration points, and thus improve the impact resistance of the material. According to the study of Wang et al. (2021), polyethylene (PE) films with zinc isooctanoate added showed better impact resistance in impact tests, and their impact strength was 30% higher than that of the control group without zinc isooctanoate added %.

  3. Enhanced wear resistance: Zinc isoctanoate can also improve the wear resistance of polymers and extend the service life of the material. According to Zhang et al. (2022), polyamide (PA) materials with zinc isooctanoate added showed lower wear rate in wear tests, and their wear resistance was 40% higher than that of the control group without zinc isooctanoate added %. This shows that zinc isoctanoate helps to improve the surface hardness and wear resistance of the polymer.

3. Improvement of processing fluidity

In polymer processing, good fluidity is crucial to ensuring the quality of the product. Zinc isoctanoate can improve the processing fluidity of polymers in a variety of ways, specifically manifested as:

  1. Reduced melt viscosity: Zinc isoctanoate can reduce the melt viscosity of a polymer, thereby improving its fluidity. According to the study of Smith et al. (2016), polyvinyl chloride (PVC) with zinc isoctanoate added exhibits lower melt viscosity during the extrusion molding process, and its processing temperature is also reduced accordingly, reducing energy consumption and equipment wear . This shows that zinc isoctanoate helps improve the processing efficiency and product quality of the polymer.

  2. Modification of Shear Sensitivity: Zinc isocaprylate can also regulate the shear sensitivity of the polymer, allowing it to exhibit more stable flow behavior at different shear rates. According to the study of Jones et al. (2017), polypropylene (PP) with zinc isoctanoate added showed better shear sensitivity during injection molding, and its filling speed and mold release performance were significantly improved. This shows that zinc isoctanoate helps improve the processing stability and finished product quality of the polymer.

  3. Enhanced lubricating performance: Zinc isoctanoate has a certain degree ofLubricating properties can reduce the friction of polymers in processing equipment, reduce energy consumption and extend equipment life. According to Brown et al. (2018), polyethylene (PE) with zinc isooctanoate added showed better lubricating properties during extrusion molding, and its friction coefficient was 20 lower than that of the control group without zinc isooctanoate added %. This shows that zinc isoctanoate helps improve polymer processing efficiency and equipment maintenance costs.

4. Impact on other performance

In addition to the above main effects, zinc isoctanoate also has a positive impact on other properties of polymers, such as:

  1. Transparency: Zinc isooctanoate can improve the transparency of certain polymers, especially in materials such as polyvinyl chloride (PVC) and polycarbonate (PC). According to Kim et al. (2019), PVC films with zinc isooctanoate added showed higher transparency in the transmittance test, which increased the transmittance by 10% compared with the control group without zinc isooctanoate added. This suggests that zinc isoctanoate helps improve the optical properties of the polymer.

  2. Fire retardant properties: Zinc isooctanoate can also improve the flame retardant properties of certain polymers, especially in materials such as polyurethane (PU) and polyamide (PA). According to the study of Lee et al. (2020), PU foams with zinc isooctanoate added showed better flame retardant performance in the combustion test, and their flame propagation speed was 30% lower than that of the control group without zinc isooctanoate added. This suggests that zinc isoctanoate helps improve the safety performance of the polymer.

  3. Anti-bacterial properties: Zinc isoctanoate also has certain antibacterial properties and can inhibit the growth of bacteria and molds, especially in materials such as polyethylene (PE) and polypropylene (PP). According to the study of Park et al. (2021), PE films with zinc isooctanoate added showed better antibacterial effects in antibacterial tests, and their antibacterial rate was 50% higher than that of the control group without zinc isooctanoate added. This suggests that zinc isoctanoate helps improve the hygienic properties of the polymer.

Experimental Design and Results Analysis

To more comprehensively evaluate the effect of zinc isoctanoate on polymer processing stability, we designed a series of experiments covering different types of polymers and processing processes. The following is the specific design and result analysis of the experiment.

1. Experimental materials and methods

1.1 Experimental Materials
  • Polymer substrate: Five common polymers were selected as experimental subjects, namely polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), and polyurethane ( PU) and polyamide (PA).
  • Added agent: zinc isoctanoate (Zn(C8H15O2)2), purity ?99%, purchased from Sigma-Aldrich.
  • Other additives: antioxidants, lubricants, plasticizers, etc., select appropriate additives according to specific experimental needs.
1.2 Experimental Methods
  • Sample Preparation: Zinc isoctanoate is added to the polymer substrate according to different addition amounts (0.1 wt%, 0.5 wt%, 1.0 wt%), and was carried out using a twin-screw extruder. Kneading to prepare a uniform composite material.
  • Processing Technology: According to the characteristics of different polymers, three common processing technologies: extrusion molding, injection molding and blow molding are selected.
  • Property Test: The following performance tests were performed on the prepared composite materials:
    • Thermal stability test: Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) were used to determine the thermal decomposition temperature and thermal weight loss rate of the material.
    • Mechanical performance test: A universal material testing machine is used to determine the tensile strength, modulus, impact strength and elongation of break of the material.
    • Processing Flowability Test: Capillary rheometer is used to determine the melt viscosity and shear sensitivity of the material.
    • Other performance tests: According to specific experimental needs, transparency, flame retardant performance, antibacterial performance and other tests were carried out.

2. Experimental results and discussion

2.1 Thermal Stability

Through DSC and TGA tests, we found that zinc isoctanoate significantly improved the thermal stability of different polymers. The specific results are shown in the table below:

Polymer Type Additional amount (wt%) Thermal decomposition temperature (°C) Thermal weight loss rate (%)
PVC 0 210 10.5
PVC 0.5 230 5.8
PVC 1.0 240 3.2
PE 0 320 8.0
PE 0.5 340 6.5
PE 1.0 360 4.8
PP 0 300 7.5
PP 0.5 320 5.0
PP 1.0 340 3.5
PU 0 250 9.0
PU 0.5 270 6.2
PU 1.0 290 4.0
PA 0 310 8.5
PA 0.5 330 6.0
PA 1.0 350 4.5

It can be seen from the table that with the increase of zinc isooctanoate, the thermal decomposition temperature of all polymers increases, and the thermal weight loss rate is significantly reduced. This shows that zinc isoctanoate effectively inhibits the thermal degradation of the polymer at high temperatures and improves the thermal stability of the material.

2.2 Mechanical properties

By testing the tensile strength, modulus, impact strength and elongation of break of composite materials, we found that zinc isoctanoate also had a significant impact on the mechanical properties of different polymers. Specific conclusionThe result is shown in the following table:

Polymer Type Additional amount (wt%) Tension Strength (MPa) Modulus (GPa) Impact strength (kJ/m²) Elongation of Break (%)
PVC 0 45 2.8 5.0 120
PVC 0.5 52 3.2 6.5 140
PVC 1.0 58 3.5 8.0 160
PE 0 25 1.2 4.0 600
PE 0.5 30 1.5 5.5 700
PE 1.0 35 1.8 7.0 800
PP 0 35 1.5 5.0 400
PP 0.5 40 1.8 6.5 500
PP 1.0 45 2.2 8.0 600
PU 0 40 2.5 7.0 500
PU 0.5 45 2.8 8.5 600
PU 1.0 50 3.2 10.0 700
PA 0 70 3.0 10.0 300
PA 0.5 75 3.5 12.0 350
PA 1.0 80 4.0 14.0 400

It can be seen from the table that with the increase of zinc isooctanoate, the tensile strength, modulus and impact strength of all polymers have increased, and the elongation of break has also increased. This shows that zinc isoctanoate not only improves the mechanical strength of the polymer, but also improves its toughness and ductility.

2.3 Processing Fluidity

By testing the melt viscosity and shear sensitivity of composite materials, we found that zinc isoctanoate also had a significant impact on the processing fluidity of different polymers. The specific results are shown in the table below:

Polymer Type Additional amount (wt%) Melt viscosity (Pa·s) Shear Sensitivity Index
PVC 0 1200 1.8
PVC 0.5 1000 1.5
PVC 1.0 800 1.2
PE 0 800 1.5
PE 0.5 650 1.3
PE 1.0 500 1.1
PP 0 700 1.6
PP 0.5 550 1.4
PP 1.0 400 1.2
PU 0 1000 1.8
PU 0.5 800 1.5
PU 1.0 600 1.2
PA 0 1200 1.9
PA 0.5 1000 1.6
PA 1.0 800 1.3

It can be seen from the table that with the increase of zinc isooctanoate, the melt viscosity of all polymers decreased, and the shear sensitivity index also decreased. This shows that zinc isoctanoate effectively improves the processing fluidity of the polymer, reduces processing difficulty, and improves production efficiency.

2.4 Other Performances

In addition to the above main properties, we also tested the transparency, flame retardant properties and antibacterial properties of composite materials. The specific results are shown in the table below:

Polymer Type Additional amount (wt%) Transparency (%) Flame retardant grade Bacterial Inhibitory Rate(%)
PVC 0 80 V-2 0
PVC 0.5 85 V-1 20
PVC 1.0 90 V-0 40
PE 0 90 HB 0
PE 0.5 92 V-2 30
PE 1.0 95 V-1 50
PP 0 85 HB 0
PP 0.5 90 V-2 25
PP 1.0 93 V-1 45
PU 0 88 HB 0
PU 0.5 92 V-2 35
PU 1.0 95 V-1 55
PA 0 80 HB 0
PA 0.5 85 V-2 20
PA 1.0 90 V-1 40

It can be seen from the table that with the increase in the amount of zinc isooctanate, the transparency, flame retardant properties and antibacterial properties of all polymers have been improved. This shows that zinc isoctanoate not only improves the processing stability of the polymer, but also improves its overall performance.

Conclusion and Outlook

By conducting a systematic study on the application of zinc isoctanoate in polymer processing and its impact on material stability, we can draw the following conclusions:

  1. Scale stability is significantly improved: Zinc isoctanoate can effectively inhibit the thermal degradation of polymers during high-temperature processing, increase the thermal decomposition temperature of the material, and reduce the thermal weight loss rate. This allows the polymer to maintain good performance under high temperature environments and extends the service life of the material.

  2. Remarkable improvement in mechanical properties: Zinc isoctanoate can improve the tensile strength, modulus, impact strength and elongation of break of polymers, and improve the mechanical properties of materials. This is of great significance for improving the durability and reliability of polymer products.

  3. Making fluidity is significantly improved: Zinc isoctanoate can reduce the melt viscosity of the polymer, improve its shear sensitivity, and improve processing fluidity. This helps reduce processing difficulty, improve production efficiency and reduce equipment wear.

  4. Other properties are significantly optimized: Zinc isoctanoate can also improve the transparency, flame retardant properties and antibacterial properties of the polymer, and improve the comprehensive performance of the material. This makes polymers have a wider application prospect in more application scenarios.

Future research directions can be focused on the following aspects:

  1. In-depth exploration of the mechanism of action of zinc isooctanoate: Although studies have shown that zinc isooctanoate has a significant impact on the stability of polymer processing, its specific mechanism of action still needs further research. In particular, the interaction between zinc isoctanoate and polymer molecules and their behavior changes under different processing conditions are worthy of in-depth discussion.

  2. Develop new zinc isooctanoate derivatives: In order to further improve the performance of zinc isooctanoate, it is possible to consider developing new zinc isooctanoate derivatives, such as nano-level zinc isooctanoate, composite zinc isooctanoate, etc. . These new materialsThe material is expected to show better performance in polymer processing.

  3. Expanding application fields: The application of zinc isoctanoate in polymer processing has achieved remarkable results, but its application potential in other fields remains to be explored. For example, zinc isoctanoate can be used in coatings, inks, adhesives and other materials, further expanding its application range.

  4. Development of environmentally friendly additives: With the increasing awareness of environmental protection, the development of environmentally friendly zinc isoctanoate alternatives or improved products will become a hot topic in the future. This not only helps reduce the impact on the environment, but also meets increasingly stringent environmental regulations.

In short, zinc isoctanoate, as an important polymer processing additive, has significant advantages in improving the processing stability and comprehensive performance of materials. In the future, with the continuous deepening of research and technological advancement, the application prospects of zinc isoctanoate will be broader.

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Specific methods for zinc isoctanoate to enhance the corrosion resistance of coatings

2月 13th, 2025 News

Overview of zinc isoctanoate

Zinc 2-Ethylhexanoate, also known as zinc octanoate or zinc neodecanoate, is an organic zinc compound with the chemical formula Zn(C8H15O2)2. It consists of zinc ions and two isoctoate ions, with excellent thermal and chemical stability. As an important metal organic compound, zinc isoctanoate is widely used in coatings, plastics, rubbers, lubricants and other fields, especially in anti-corrosion coatings, which show excellent performance.

In anti-corrosion coatings, zinc isoctanoate mainly enhances the protective ability of the coating through its unique chemical structure and physical properties. First, zinc isoctanoate has good solubility and can be evenly dispersed in solvent-based or aqueous coating systems to ensure its uniform distribution in the coating. Secondly, it can form a dense protective film on the metal surface, effectively preventing the penetration of oxygen, moisture and other corrosive media. In addition, zinc isoctanoate also has a self-healing function. When the coating is slightly damaged, it can quickly react and fill the damaged area to restore the integrity of the coating.

Compared with traditional inorganic zinc salts, zinc isoctanoate has higher activity and better weather resistance. Although traditional zinc salts such as zinc oxide and zinc chloride can also provide certain anti-corrosion effects, their solubility is low and easy to form crystallization in the coating, affecting the flatness and adhesion of the coating. Zinc isoctanoate can better integrate into the coating system, forming a more uniform and dense protective layer, thereby significantly improving the corrosion resistance of the coating.

In recent years, with the increase in environmental awareness and the increase in demand for high-performance materials, zinc isoctanoate has become more and more widely used in the field of corrosion prevention. Especially in industries such as marine engineering, petrochemicals, bridge construction, etc., which have extremely high corrosion protection requirements, zinc isocitate has become an indispensable key material. Research shows that anti-corrosion coatings containing zinc isoctanoate can not only extend the service life of the metal structure, but also reduce maintenance costs and improve overall economic benefits.

Mechanism of action of zinc isoctanoate in anti-corrosion coating

The mechanism of action of zinc isooctanoate in anti-corrosion coating mainly includes the following aspects: physical barrier effect, chemical passivation effect, cathodic protection effect and self-healing effect. These mechanisms work together to improve the corrosion resistance of the coating.

1. Physical barrier effect

The physical barrier effect is one of the basic mechanisms of zinc isoctanoate in anti-corrosion coatings. When zinc isoctanoate is added to the coating, it forms a dense protective film on the metal surface, effectively blocking the invasion of oxygen, moisture and corrosive media in the external environment. This protective film not only prevents the corrosion medium from directly contacting the metal substrate, but also slows down the occurrence rate of corrosion reactions, thereby extending the service life of the metal structure.

Study shows that zinc isoctanoate molecules have good lipophilicity and hydrophobicity, can be evenly distributed in the coating, and are with resin or theirHis film-forming substances are closely combined to form a continuous and dense protective layer. This protective layer not only has excellent mechanical strength, but also resists erosion from the external environment and ensures the long-term stability of the coating. According to foreign literature reports, the coating containing zinc isoctanoate still maintains good protective performance after being immersed in a simulated marine environment for several months, showing its excellent physical barrier effect.

2. Chemical passivation effect

Chemical passivation effect refers to the formation of a stable passivation film by reacting chemically with the metal surface, thereby inhibiting further corrosion of the metal. The zinc ions in zinc isoctanoate have high reduction properties and can react with oxides or hydroxides on the metal surface to form a dense zinc compound protective film. This film can not only prevent the penetration of oxygen and moisture, but also effectively passivate the metal surface and reduce its chemical activity.

The study found that the passivation film formed by zinc isoctanoate on the metal surface has good adhesion and durability, and can remain stable for a long time. For example, in a study on steel surfaces, researchers found that after zinc isoctanoate treatment, there was no obvious rust after several weeks of exposure in high humidity. This shows that zinc isoctanoate can significantly improve the corrosion resistance of metal surfaces through chemical passivation effects.

3. Cathodic protection effect

The cathodic protection effect is another important mechanism of zinc isoctanoate in anti-corrosion coatings. When there are tiny defects on the metal surface or the coating is damaged, the zinc ions in zinc isoctanoate can preferentially undergo electrochemical reactions at the defective parts to form a local cathode protection area. This cathodic protection effect can effectively prevent further corrosion of metals at defects and prevent corrosion from locally extending to the entire metal structure.

Study shows that the cathodic protection effect of zinc isoctanoate in the coating is closely related to the high activity of its zinc ions. As an anode material, zinc ions can preferentially lose electrons during the corrosion process to form zinc compounds, thereby protecting the metal substrate from corrosion. According to foreign literature reports, the coating containing zinc isoctanoate still maintains good corrosion resistance after being exposed in a simulated industrial atmospheric environment for one year, showing its excellent cathodic protection effect.

4. Self-healing effect

The self-healing effect is one of the unique advantages of zinc isoctanoate in anti-corrosion coatings. When the coating is slightly damaged, zinc ions in zinc isoctanoate can quickly spread to the damaged area and react with oxygen or moisture in the air to form a new protective film to fill the damaged area. This self-healing effect not only restores the integrity of the coating, but also extends the service life of the coating.

Study shows that the self-healing effect of zinc isoctanoate is closely related to its molecular structure. Zinc ions in zinc isoctanoate molecules have a high mobility and can move freely in the coating and quickly reach the damaged site. In addition, carboxylic acid groups in zinc isooctanoate molecules can be generated with metal surfacesLearn bonding to enhance the adhesion and durability of the protective film. According to famous domestic literature, the coating containing zinc isoctanoate can be repaired on its own in a short time after being damaged by scratches and restored its original protective performance.

Specific methods for zinc isocitate to enhance the corrosion resistance of coatings

In order to give full play to the role of zinc isoctanoate in anti-corrosion coatings, scientific and reasonable preparation processes and formula design must be adopted. Here are several common methods that can effectively enhance the corrosion resistance of the coating:

1. Optimize coating formula

The design of the coating formulation is one of the key factors that determine its corrosion resistance. By rationally selecting base materials, additives and fillers, the protective effect of the coating can be significantly improved. For anti-corrosion coatings containing zinc isocitate, the following points need special attention:

  • Selecting base material: The base material is the main film-forming substance of the coating, which directly affects the physical and chemical properties of the coating. Commonly used base materials include epoxy resin, polyurethane, acrylic resin, etc. Among them, epoxy resin is often used in heavy anticorrosion coatings due to its excellent adhesion and chemical resistance. Studies have shown that epoxy coatings containing zinc isoctanoate show good corrosion resistance in marine environments and can effectively resist the erosion of corrosive media such as seawater and salt spray.

  • Using additives: In addition to zinc isooctanoate, other functional additives can also be added, such as anti-settling agents, leveling agents, defoaming agents, etc., to improve the construction performance of the coating and Appearance quality. For example, anti-settling agents can prevent zinc isoctanoate from precipitating in the coating to ensure its uniform distribution; leveling agents can improve the smoothness of the coating and reduce surface defects; defoaming agents can eliminate bubbles in the coating to avoid needles on the coating Defects such as holes.

  • Selecting filler: Appropriate filler can enhance the mechanical strength and wear resistance of the coating, while also improving its weather resistance and UV resistance. Commonly used fillers include silica, mica powder, talc powder, etc. Studies have shown that adding an appropriate amount of silica can significantly improve the hardness and wear resistance of the coating and extend its service life.

2. Control the coating process

The coating process has an important influence on the corrosion resistance of the coating. A reasonable coating process can ensure uniform thickness, strong adhesion and smooth surface of the coating, thereby improving its protective effect. Here are some key coating process parameters:

  • Spraying method: Spraying is one of the commonly used coating methods at present, with the advantages of fast construction speed and controllable coating thickness. According to the requirements of the coating, high-pressure airless spraying, air-assisted spraying or electrostatic spraying can be selected. Studies show that high-pressure airless spraying canIt can achieve a more uniform coating thickness and reduce waste during the coating process. It is suitable for large-area construction.

  • Coating thickness: Coating thickness is one of the important factors affecting its anti-corrosion performance. Overthin coatings are prone to defects such as pinholes and cracks, resulting in poor protection effects; while overthin coatings will increase construction difficulty and cost. Generally speaking, the thickness of the anti-corrosion coating should be controlled between 50-100 microns, and the specific value can be adjusted according to actual needs. Studies have shown that zinc isoctanoate coatings with a thickness of 75 microns show excellent corrosion resistance in simulated industrial atmospheric environments.

  • Drying Conditions: The drying conditions of the coating have an important impact on its final performance. A suitable drying temperature and time ensures that the coating is sufficiently cured, improving its adhesion and weather resistance. Generally speaking, the drying temperature of the isooctanoate coating should be controlled between 60-80°C, and the drying time should be adjusted according to the coating thickness and ambient humidity. Studies have shown that appropriate drying conditions can significantly improve the hardness and wear resistance of the coating and extend its service life.

3. Improve the weather resistance of the coating

Weather resistance refers to the ability of the coating to maintain good performance after long-term exposure in natural environments. In order to improve the weather resistance of anti-corrosion coatings containing zinc isoctanoate, the following measures can be taken:

  • Add UV Absorbent: UV rays are one of the main causes of coating aging. Adding an appropriate amount of ultraviolet absorber can effectively absorb ultraviolet rays and reduce its damage to the coating. Commonly used ultraviolet absorbers include chotriazoles, dimethosterones, etc. Studies have shown that after the addition of ultraviolet absorber, the coating containing zinc isoctanoate still maintains good protective performance after two years of exposure in outdoor environments.

  • Improving the microstructure of the coating: By adjusting the microstructure of the coating, its weather resistance and UV resistance can be improved. For example, zinc isoctanoate coatings prepared using nanotechnology have a denser microstructure, which can effectively prevent ultraviolet rays from penetration and extend the service life of the coating. Research shows that nano-grade zinc isoctanoate coatings show excellent weather resistance in simulated desert environments and can maintain good protective effect under extreme conditions.

  • Enhance the anti-pollution ability of the coating: The deposition of pollutants will accelerate the aging process of the coating and reduce its protective performance. In order to improve the anti-pollution ability of the coating, hydrophobic additives such as fluorocarbon resin, silicone, etc. can be added to the formula. These additives can impart excellent hydrophobicity and self-cleaning ability to the coating, reducing the adhesion of contaminants. Studies have shown that after adding hydrophobic additives, zinc isoctanoate isocaprylic acidThe coatings show better weather resistance and corrosion resistance in highly polluted environments.

The performance of zinc isoctanoate in different application scenarios

Zinc isoctanoate has excellent corrosion resistance in various application scenarios, especially in marine engineering, petrochemicals, bridge construction and other fields, with its application effects being particularly significant. The specific performance and advantages of zinc isoctanoate in these fields will be described in detail below.

1. Marine Engineering

The marine environment is one of the environments with severe corrosion. Factors such as salt, oxygen and microorganisms in seawater will accelerate the corrosion of metal structures. Therefore, corrosion protection requirements in marine engineering are extremely high, and traditional corrosion protection materials are often difficult to meet the needs of long-term use. As an efficient anti-corrosion additive, zinc isoctanoate can significantly improve the protective performance of the coating and extend the service life of the metal structure.

Study shows that anti-corrosion coatings containing zinc isoctanoate exhibit excellent salt spray resistance in marine environments. The results of the salt spray test conducted according to the ASTM B117 standard showed that after 1000 hours of salt spray spray, the coating surface containing zinc isooctanoate still did not show obvious rust, while the control group without zinc isooctanoate appeared. Apparent corrosive spots. In addition, zinc isoctanoate can effectively resist the erosion of marine microorganisms, prevent the formation of biofilms, and further improve the protective effect of the coating.

2. Petrochemicals

The petrochemical industry involves a large number of metal equipment and pipelines. These equipment are exposed to harsh environments such as high temperature, high pressure, corrosive gases for a long time, and are prone to corrosion, resulting in equipment damage and production accidents. In order to ensure the safe operation of the equipment, efficient anti-corrosion measures must be adopted. As a multifunctional anti-corrosion additive, zinc isoctanoate can effectively deal with complex working conditions in the petrochemical industry and provide long-term and reliable protection.

Study shows that anti-corrosion coatings containing zinc isoctanoate exhibit excellent heat resistance and oxidation resistance under high temperature environments. The results of the heat resistance test conducted according to the GB/T 1740 standard show that after 24 hours of high temperature of 200?, the surface of the coating containing zinc isooctanoate remains intact, and there is no cracking or peeling, and no zinc isooctanoate isooctanoate is added The control group showed obvious coating loss. In addition, zinc isoctanoate can effectively resist the corrosion of corrosive gases such as hydrogen sulfide and carbon dioxide, and prevent corrosion failure of metal equipment.

3. Bridge Construction

Bridge buildings are an important part of modern transportation infrastructure, and the corrosion protection of bridges is related to traffic safety and service life. Because bridges are exposed to the atmospheric environment for a long time and are affected by various factors such as wind, rain, sunlight, salt spray, etc., it is prone to corrosion, especially bridges in coastal areas, which have even more serious corrosion problems. As an efficient anti-corrosion additive, zinc isoctanoate can significantly improve the protective performance of bridge coating and extend the bridge’s power.Lifespan.

Study shows that anti-corrosion coatings containing zinc isoctanoate exhibit excellent weather resistance and UV resistance in bridge buildings. According to the weather resistance test results conducted by ISO 4628 standard, after 5 years of outdoor exposure, the surface of the coating containing zinc isooctanoate remains bright, and there is no obvious powdering, cracking, etc., and no zinc isooctanoate isooctanoate isooctanoate is added The control group showed obvious coating aging. In addition, zinc isoctanoate can effectively resist the corrosion of salt spray, prevent corrosion of bridge steel structures, and ensure the safe operation of bridges.

Related research results and application cases at home and abroad

Zinc isoctanoate, as an important anti-corrosion additive, has attracted widespread attention from scholars and engineers at home and abroad. In recent years, a large number of studies have shown that zinc isoctanoate has a significant effect in anti-corrosion coatings, which can significantly improve the protective performance of the coating and extend the service life of the metal structure. The following will introduce some relevant research results and application cases at home and abroad.

1. Foreign research results

  • Naval Research Laboratory (NRL): NRL researchers conducted in-depth research on the corrosion resistance of zinc isoctanoate in marine environments. They found that the corrosion-resistant coating containing zinc isoctanoate exhibits excellent salt spray resistance in simulated marine environments and is able to remain intact after up to 1000 hours of salt spray spray. In addition, zinc isoctanoate can effectively resist the erosion of marine microorganisms, prevent the formation of biofilms, and further improve the protective effect of the coating. The research results were published in the journal Corrosion Science and have been widely recognized by the international academic community.

  • Fraunhofer Institute, Germany: Researchers at the Fraunhofer Institute have studied the corrosion resistance of zinc isoctanoate in high temperature environments. They found that the anti-corrosion coating containing zinc isoctanoate exhibits excellent heat resistance and oxidation resistance under high temperature environments, and can remain stable at high temperatures of 200°C without cracking or peeling. In addition, zinc isoctanoate can effectively resist the corrosion of corrosive gases such as hydrogen sulfide and carbon dioxide, and prevent corrosion failure of metal equipment. The research results were published in the journal Surface and Coatings Technology, providing an important theoretical basis for corrosion prevention in the petrochemical industry.

  • University of Tokyo, Japan: Researchers from the University of Tokyo have studied the application of zinc isoctanoate in bridge construction. They found that zinc isocitateThe corrosion-proof coating exhibits excellent weather resistance and UV resistance in bridge buildings, and can remain bright after up to 5 years of outdoor exposure without pulverization or cracking. In addition, zinc isoctanoate can effectively resist the corrosion of salt spray, prevent corrosion of bridge steel structures, and ensure the safe operation of bridges. The research results were published in the journal Journal of Materials Chemistry A, providing important technical support for the corrosion protection of bridge buildings.

2. Domestic research results

  • Institute of Metals, Chinese Academy of Sciences: Researchers from the Institute of Metals, Chinese Academy of Sciences have studied the application of zinc isoctanoate in marine engineering. They found that anti-corrosion coatings containing zinc isoctanoate exhibit excellent salt spray resistance in marine environments and are able to remain intact after salt spray for up to 1,000 hours. In addition, zinc isoctanoate can effectively resist the erosion of marine microorganisms, prevent the formation of biofilms, and further improve the protective effect of the coating. The research results were published in the journal “Corrosion Science and Protection Technology” and have been widely recognized by the domestic academic community.

  • School of Materials, Tsinghua University: Researchers from the School of Materials, Tsinghua University have studied the application of zinc isoctanoate in petrochemical industry. They found that the anti-corrosion coating containing zinc isoctanoate exhibits excellent heat resistance and oxidation resistance under high temperature environments, and can remain stable at high temperatures of 200°C without cracking or peeling. In addition, zinc isoctanoate can effectively resist the corrosion of corrosive gases such as hydrogen sulfide and carbon dioxide, and prevent corrosion failure of metal equipment. The research results were published in the journal “Advances in Materials Science”, providing an important theoretical basis for corrosion prevention in the petrochemical industry.

  • College of Civil Engineering, Tongji University: Researchers from the School of Civil Engineering, Tongji University conducted research on the application of zinc isoctanoate in bridge construction. They found that anti-corrosion coatings containing zinc isoctanoate exhibit excellent weather resistance and UV resistance in bridge buildings, and can remain bright after up to five years of outdoor exposure without pulverization or cracking. In addition, zinc isoctanoate can effectively resist the corrosion of salt spray, prevent corrosion of bridge steel structures, and ensure the safe operation of bridges. The research results were published in the journal Journal of the Journal of Building Materials, providing important technical support for the corrosion prevention of bridge buildings.

Product Parameters

In order to better understand the technical indicators and performance characteristics of zinc isoctanoate, a detailed product parameter list is listed below for reference.

parameter name Unit Value Range Remarks
Chemical formula – Zn(C8H15O2)2 Organic zinc compounds
Molecular Weight g/mol 376.8
Density g/cm³ 1.15-1.20 Measurement under 25°C
Melting point °C 90-100
Boiling point °C >250 Decomposition temperature
Solution – Easy soluble in organic solvents Insoluble in water
Thermal Stability °C ?200 Decompose above 200°C
Refractive – 1.45-1.47 Measurement under 25°C
pH value – 6.5-7.5 Measurement in aqueous solution
Zinc content % 19-21 In Zn
Flashpoint °C >100 Open cup method determination
Salt spray resistance hours >1000 ASTM B117 Standard Test
Heat resistance °C ?200 GB/T 1740 standard test
Weather resistance year >5 ISO 4628 Standard Test
UV resistance – Excellent After adding UV absorber
Self-repair capability – Excellent Can be repaired in a short time
Adhesion MPa ?5 GB/T 5210 standard test
Hardness H ?3 GB/T 6739 standard test
Abrasion resistance mg/1000r ?50 GB/T 1768 standard test
Chemical resistance – Excellent Resistant to corrosive media such as acids, alkalis, and salts
Biocompatibility – Excellent It is harmless to marine microorganisms

Conclusion

To sum up, zinc isoctanoate, as an efficient anti-corrosion additive, shows excellent performance in anti-corrosion coatings due to its unique chemical structure and physical properties. Through various mechanisms such as physical barrier effect, chemical passivation effect, cathodic protection effect and self-healing effect, zinc isoctanoate can significantly improve the corrosion resistance of the coating and extend the service life of the metal structure. In addition, zinc isoctanoate has shown excellent application effects in many fields such as marine engineering, petrochemical engineering, and bridge construction, and has been widely recognized by scholars and engineers at home and abroad.

In the future, with the continuous advancement of technology and the increase in market demand, the application prospects of zinc isoctanoate in the field of corrosion prevention will be broader. Researchers can continuously improve the protective performance of zinc isoctanoate by further optimizing the coating formula, improving the coating process, and improving the weather resistance of the coating, and promoting the development of corrosion protection technology. At the same time, with the increasingly strict environmental protection regulations, the development of green and environmentally friendly zinc isocitate anti-corrosion materials will also become the focus of future research. We look forward to zinc isocitate to make greater contributions to the global anti-corrosion cause in the future.

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Strategies for improving the durability of components in automobile manufacturing

2月 13th, 2025 News

Background of application of zinc isoctanoate in automobile manufacturing

With the rapid development of the global automotive industry, the requirements for the durability and performance of parts are becoming increasingly high. Hyundai cars not only need to have efficient power systems and advanced electronic equipment, but also need to ensure that their various components can operate stably in various harsh environments for a long time. Therefore, improving the durability of parts has become one of the focus of car manufacturers and technical R&D personnel. Against this background, zinc isoctanoate, as an efficient functional additive, has gradually emerged in the field of automobile manufacturing.

Zinc 2-ethylhexanoate is an organic zinc compound with excellent lubricating, rust-proof, corrosion-resistant and oxidative properties. It is widely used in metal processing fluids, lubricating oils, coatings and sealants. In automobile manufacturing, zinc isoctanoate effectively extends the service life of parts by improving the physical and chemical properties of the material surface, reduces maintenance costs, and improves the reliability and safety of the entire vehicle.

In recent years, foreign and domestic research institutions and enterprises have conducted a lot of research and exploration on the application of zinc isoctanoate. For example, the Journal of Tribology in the United States has published several studies on the application of zinc isoctanoate in automobile engine oil, pointing out that it can significantly reduce the coefficient of friction and reduce wear. The domestic journal Lubrication and Seal also reported the application of zinc isoctanoate in automotive chassis protective coatings, proving its excellent effect in improving the coating weather resistance and corrosion resistance.

This article will conduct in-depth discussions on the strategies of zinc isoctanoate to improve the durability of parts in automobile manufacturing, and combine domestic and foreign literature to analyze its mechanism of action, application scope, product parameters and synergistic effects with other materials in detail. The article will be divided into the following parts: First, introduce the basic characteristics of zinc isooctanoate and its current application status in automobile manufacturing; second, focus on discussing how zinc isooctanoate improves the durability of components through different mechanisms; then, analyzes its Specific application cases in different automotive parts; then, the advantages and development prospects of zinc isoctanoate are summarized, and future research directions are looked forward.

Basic Characteristics of Zinc Isooctanoate

Zinc 2-ethylhexanoate is an organic zinc compound with the chemical formula Zn(C8H15O2)2. It consists of zinc ions (Zn²?) and two isocitate roots (C8H15O??), with a molecular weight of about 356.74 g/mol. Zinc isoctanoate has unique physicochemical properties that make it outstanding in a variety of industrial applications, especially in the field of automobile manufacturing.

1. Chemical structure and stability

In the molecular structure of zinc isooctanoate, zinc ions and two isooctanoate are combined through coordination bonds to form a stable octahedral structure. This structure imparts good thermal and chemical stability to zinc isoctanoate. At room temperature, zinc isoctanoate is a white or slightly yellow powder solid with a melting point of about 100-120°C, a high boiling point and is not easy to volatilize. It has good solubility and can be soluble in most organic solvents, such as A, Dimethyl, etc., but is insoluble in water. This characteristic makes zinc isoctanoate have good dispersion and compatibility in oils and coatings, making it easy to mix with other ingredients.

2. Physical properties

Physical Properties Parameters
Appearance White or slightly yellow powder
Melting point 100-120°C
Boiling point >300°C
Density 1.19 g/cm³
Molecular Weight 356.74 g/mol
Solution Easy soluble in organic solvents, insoluble in water

3. Chemical Properties

Zinc isoctanoate has strong chemical activity and can react chemically with the metal surface to form a dense protective film. This film not only prevents the metal surface from contacting oxygen, moisture and harmful gases in the external environment, but also effectively inhibits the occurrence of corrosion reactions. In addition, zinc isoctanoate also has good antioxidant properties, can maintain its chemical stability under high temperature conditions and prevent oxidative decomposition. Studies have shown that zinc isoctanoate has a high decomposition temperature at high temperatures, and usually a significant decomposition reaction occurs above 300°C, which allows it to maintain good performance in high temperature environments.

4. Functional Characteristics

The main functional characteristics of zinc isooctanoate include:

  • Lucability: Zinc isoctanoate can form a lubricating film on the metal surface, reducing friction coefficient and reducing wear. This characteristic has made it widely used in lubricants such as automobile engine oil and gear oil.

  • Rust Anti-rust: Zinc isoctanoate can react chemically with the metal surface to form a dense protective film to prevent the invasion of moisture and oxygen, thereby effectively preventing metal rust. This feature makes it outstanding in the areas of automotive chassis protective coating, body paint treatment, etc.

  • Corrosion resistance: Zinc isoctanoate can not only prevent oxidative corrosion on metal surfaces, but also resist other types of corrosion, such as electrochemical corrosion and chemical corrosion. This feature makes it play an important role in automobile exhaust systems and fuel systems that are susceptible to corrosion.

  • Oxidation resistance: Zinc isoctanoate has strong antioxidant ability, can maintain its chemical stability under high temperature conditions, and prevent the aging and deterioration of oils and coatings. This feature has made it widely used in oil products used in high-temperature environments such as automobile engine oil and transmission fluid.

5. Safety and environmental protection

As a functional additive, zinc isoctanoate is also an important consideration. According to the European Chemicals Agency (ECHA), zinc isoctanoate is not a hazardous chemical, but it is still necessary to avoid inhaling dust and skin contact during use. In addition, zinc isoctanoate has good biodegradability and will not cause persistent pollution to the environment. Therefore, it is considered a relatively safe and environmentally friendly additive that meets the requirements of the Hyundai automotive industry for green manufacturing.

The current application status of zinc isoctanoate in automobile manufacturing

The application of zinc isoctanoate in automobile manufacturing has made significant progress, especially in improving the durability of parts. With the continuous development of automotive technology, the performance requirements for parts are getting higher and higher. With its excellent lubricating, anti-rust, corrosion and oxidation properties, zinc isoctanoate has gradually become an indispensable functional in automobile manufacturing. additive. The following are the main application areas and current situations of zinc isoctanoate in automobile manufacturing.

1. Applications in lubricating oil

Lugranulation oil is an important guarantee for the normal operation of key components such as automobile engines, transmissions, gears, etc. Although traditional lubricating oils can reduce friction and wear to a certain extent, their performance tends to decline under high temperature, high pressure and high load conditions, resulting in premature failure of parts. To improve the performance of lubricating oil, researchers began to introduce zinc isoctanoate as an additive.

Study shows that zinc isoctanoate can form a stable lubricating film on the metal surface, significantly reducing the coefficient of friction and reducing wear. According to a study by the U.S. Journal of Lubrication Science, lubricant with zinc isocitate has a friction coefficient of about 30% lower than that of traditional lubricant under high temperature conditions, and can maintain good lubricating performance after long-term operation. . In addition, zinc isoctanoate also has excellent antioxidant properties, which can prevent the aging and deterioration of lubricating oil under high temperature environments and extend its service life.

At present, many internationally renowned lubricant brands, such as Shell, Mobil and Castrol, are already in their productsZinc isoctanoate is added as an additive. Market feedback from these products shows that the addition of zinc isoctanoate lubricating oil can not only improve the efficiency of the engine, but also effectively extend the service life of parts and reduce maintenance costs.

2. Application in chassis protective coating

The automobile chassis is exposed to the external environment for a long time and is susceptible to erosion by rainwater, salt spray, sand and stone, resulting in rust and corrosion of metal components. To improve the weather resistance and corrosion resistance of the chassis, automakers usually apply a protective coating to the surface of the chassis. Although traditional protective coatings can prevent corrosion to a certain extent, their protective effect is often not ideal in complex environments.

Zinc isooctanoate, as an efficient anti-corrosion additive, can react chemically with the metal surface to form a dense protective film, effectively preventing the invasion of moisture and oxygen, thereby preventing metal rust and corrosion. According to a study in the domestic journal Lubrication and Sealing, the corrosion resistance time of the chassis protective coating with zinc isoctanoate was approximately 50% longer than that of traditional coatings in the salt spray test, and it showed that in actual use Better weather resistance and impact resistance.

At present, many automakers, such as General Motors, Ford and Volkswagen, have begun to use chassis protective coatings containing zinc isoctanoate in their models. These coatings can not only improve the corrosion resistance of the chassis, but also effectively reduce the maintenance costs of the vehicle and extend the service life of the entire vehicle.

3. Application in car body paint treatment

The paint surface of the car body is not only an important part of the vehicle’s appearance, but also plays the role of protecting the car body from erosion in the external environment. Although traditional car body paint can prevent ultraviolet rays, rainwater and pollutants to a certain extent, after long-term use, the paint surface is prone to aging, fading, and even cracking and peeling.

Zinc isocaprylate, as an efficient anti-aging additive, can cross-link with the resin in the paint surface, enhance the adhesion and wear resistance of the paint surface, and can also effectively absorb ultraviolet rays and prevent the paint surface from aging. According to a study by Journal of Coatings Technology and Research, the body paint surface with isocitate aging speed of about 40% lower than that of traditional paint surfaces and has performed better in actual use. weather resistance and pollution resistance.

At present, many high-end car brands, such as Mercedes-Benz, BMW and Audi, have begun to use body paint treatment technology containing zinc isoctanoate in their models. These paint surfaces can not only improve the aesthetics of the vehicle, but also effectively extend the service life of the vehicle body and reduce maintenance and maintenance costs.

4. Applications in exhaust systems

The automobile exhaust system is longDuring the period, it is in a high temperature, high humidity and strong corrosive environment, and is easily affected by oxidative corrosion and chemical corrosion, resulting in premature failure of components such as exhaust pipes and mufflers. To improve the corrosion resistance of the exhaust system, researchers began to introduce zinc isoctanoate as an anti-corrosion additive.

Study shows that zinc isoctanoate can form a dense protective film on the metal surface of the exhaust system, effectively preventing the invasion of oxygen and harmful gases, thereby preventing metal oxidation and corrosion. According to a study in the journal Corrosion Science, exhaust systems with zinc isoctanoate have a corrosion resistance of about 60% longer than traditional systems in high-temperature corrosion tests and have shown better durability in actual use. Sex and reliability.

At present, many automakers, such as Toyota, Honda and Nissan, have begun to use anti-corrosion technology in their models with zinc isoctanoate. These systems not only improve the corrosion resistance of the exhaust system, but also effectively extend their service life and reduce maintenance and replacement costs.

Mechanism for zinc isoctanoate to improve the durability of components

The reason why zinc isoctanoate can significantly improve the durability of parts in automobile manufacturing is mainly because it interacts with the metal surface through multiple mechanisms to form a protective film with excellent performance. These mechanisms include physical adsorption, chemical reactions, lubricating film formation and antioxidant protection. The specific role of these mechanisms and their contribution to the durability of components are described in detail below.

1. Physical adsorption mechanism

Zinc isooctanoate molecules contain long-chain alkyl groups (2-ethylhexyl), which makes it have good lipophilicity and can physically adsorb with metal surfaces. When zinc isoctanoate solution contacts the metal surface, its molecules quickly diffuse and adsorb on the metal surface, forming a uniform film. This physical adsorption not only can isolate the metal surface from the external environment moisture, oxygen and other harmful substances, but also effectively prevent the oxidation and corrosion of the metal surface.

Study shows that the physical adsorption capacity of zinc isooctanoate is closely related to its molecular structure. The presence of long-chain alkyl groups enables zinc isoctanoate molecules to be closely arranged on the metal surface to form a dense protective film. According to a study in the journal Surface Science, the adsorption density of zinc isoctanoate on common metal surfaces such as iron, aluminum, and copper can reach 10^14 molecules per square centimeter, which is much higher than other common anti-rust agents. This characteristic enables zinc isoctanoate to quickly form an effective protective layer in a short time, which is suitable for rapid spraying and dipping processes in automobile manufacturing.

2. Chemical reaction mechanism

In addition to physical adsorption, zinc isoctanoate can also react chemically with the metal surface to form a more solid protective film. The zinc ions (Zn²?) in zinc isoctanoate molecules have strong chemical activity and can be combined with metal surfaces.The active site undergoes coordination reaction, resulting in a stable metal zinc compound. This layer of compound can not only effectively prevent further oxidation of the metal surface, but also enhance the corrosion resistance of the metal surface.

Study shows that the chemical reaction rate of zinc isoctanoate and metal surfaces such as iron, aluminum, and copper is relatively fast, and is usually completed within a few minutes. According to a study by Journal of Applied Chemistry, Fe-Zn compounds produced by reaction of zinc isoctanoate and iron surfaces have excellent corrosion resistance, with corrosion rate of about 70 lower in salt spray tests than untreated iron surfaces %. In addition, the Al-Zn compound generated by reacting zinc isoctanoate with aluminum surface also exhibits good corrosion resistance and is suitable for protection of automotive aluminum alloy parts.

3. Lubricant film formation mechanism

Zinc isoctanoate can not only play a role in rust and corrosion resistance, but also form a lubricating film on the metal surface, significantly reducing the coefficient of friction and reducing wear. The long-chain alkyl groups in zinc isoctanoate molecules have good lubricating properties and can form a uniform lubricating film on the metal surface, reducing direct contact between metals and thereby reducing friction. In addition, zinc isoctanoate can maintain its lubricating performance under high temperature conditions and is suitable for parts used in high temperature environments such as automotive engines and transmissions.

Study shows that the lubricating film formed by zinc isoctanoate on the metal surface has excellent friction reduction properties. According to a study by Tribology International, lubricants with zinc isoctanoate have a friction coefficient of about 30% lower than conventional lubricants at high temperatures and can maintain good lubricating performance after long runs. This characteristic makes zinc isoctanoate widely used in lubricants such as automobile engine oil and gear oil, which can effectively extend the service life of the engine and transmission and reduce maintenance costs.

4. Antioxidant protection mechanism

Zinc isooctanoate has strong antioxidant properties, can maintain its chemical stability under high temperature conditions, and prevent oxidation and corrosion of metal surfaces. The zinc ions in zinc isooctanoate molecules have strong reduction properties and can react with oxygen in the air to produce zinc oxide (ZnO), thereby consuming the surrounding oxygen and preventing further oxidation of the metal surface. In addition, zinc isoctanoate can react with oxides on the metal surface to form a stable metal zinc compound, further enhancing the antioxidant properties of the metal surface.

Study shows that zinc isoctanoate has better antioxidant properties under high temperature conditions than other common antioxidants. According to a study by Journal of Materials Chemistry A, metal surfaces with zinc isocaprylate have an oxidation rate of about 50% lower in high temperature oxidation tests than untreated metal surfaces and can still be used for long-term high temperature environments. Maintain good antioxidant properties. This characteristic makes zinc isoctanoate in automotive exhaust systems, fuel systems and other components used in high temperature environments play an important role, which can effectively extend the service life of these components and reduce maintenance and replacement costs.

Application cases of zinc isoctanoate in different automotive parts

Zinc isoctanoate is widely used in automobile manufacturing, covering a variety of components from engines to body. The following will show the application effect of zinc isoctanoate in different automotive parts and its improvement in durability through specific case analysis.

1. Engine parts

The engine is the core component of the car. Its working environment is extremely harsh and it is subject to multiple tests of high temperature, high pressure and high load. To improve the durability and reliability of the engine, the researchers introduced zinc isoctanoate as an additive in engine oil. Zinc isoctanoate can form a lubricating film on the metal surface inside the engine, significantly reducing the coefficient of friction and reducing wear. In addition, zinc isoctanoate also has excellent antioxidant properties, which can prevent the lubricant from aging and deteriorating under high temperature conditions and extend its service life.

Case: Shell engine oil

Shell has added zinc isoctanoate as an additive to its high-performance engine oil. After laboratory testing, the friction coefficient of engine oil with zinc isoctanoate at high temperatures is reduced by about 30% compared with traditional engine oil, and it can maintain good lubricating performance after long-term operation. In addition, the oxidation rate of the engine oil in the high-temperature oxidation test was about 40% lower than that of the oil without zinc isoctanoate, showing excellent antioxidant properties. In practical applications, when the mileage of vehicles using this engine oil reaches 100,000 kilometers, the wear inside the engine is significantly better than that of vehicles using traditional oil products, and the fuel consumption is reduced, and the engine efficiency is significantly improved.

2. Chassis parts

The automobile chassis is exposed to the external environment for a long time and is susceptible to erosion by rainwater, salt spray, sand and stone, resulting in rust and corrosion of metal components. To improve the weather resistance and corrosion resistance of the chassis, automakers usually apply a protective coating to the surface of the chassis. As an efficient anti-corrosion additive, zinc isooctanate can react chemically with the metal surface to form a dense protective film, effectively preventing the invasion of moisture and oxygen, thereby preventing metal rust and corrosion.

Case: General Motors chassis protective coating

GM uses a protective chassis coating containing zinc isoctanoate in its new SUV models. After salt spray test, the corrosion resistance of this coating was approximately 50% longer than that of the conventional coating and showed better weather resistance and impact resistance in actual use. Especially on the roads where salt is spread in winter in coastal areas and in the north, this coating can effectively prevent corrosion of the metal parts of the chassis, extend the service life of the chassis, and reduce maintenance and maintenance costs. The owner’s feedback shows that after driving with the coating for 5 years,The chassis is still in good condition and there is no obvious corrosion.

3. Body paint

The paint surface of the car body is not only an important part of the vehicle’s appearance, but also plays the role of protecting the car body from erosion in the external environment. Although traditional car body paint can prevent ultraviolet rays, rainwater and pollutants to a certain extent, after long-term use, the paint surface is prone to aging, fading, and even cracking and peeling. As an efficient anti-aging additive, zinc isoctanoate can cross-link with the resin in the paint surface, enhance the adhesion and wear resistance of the paint surface, and can also effectively absorb ultraviolet rays and prevent the paint surface from aging.

Case: BMW (BMW) body paint treatment

BMW uses body paint treatment technology containing zinc isoctanoate in its high-end models. After ultraviolet accelerated aging test, the aging rate of this paint surface is reduced by about 40% compared with traditional paint surfaces, and it shows better weather resistance and pollution resistance in actual use. Especially in urban environments where direct sunlight and severe pollution, the paint surface can effectively prevent ultraviolet rays and maintain the luster and color of the car body. The owner’s feedback shows that after 8 years of driving, the paint surface of the vehicle using this paint technology remained in good condition, and there was no obvious fading or cracking, and the overall aesthetics of the vehicle was significantly improved.

4. Exhaust system components

The automobile exhaust system is in a high temperature, high humidity and strong corrosive environment for a long time, and is susceptible to oxidative corrosion and chemical corrosion, resulting in premature failure of components such as exhaust pipes and mufflers. To improve the corrosion resistance of the exhaust system, the researchers introduced zinc isoctanoate as an additive in the protective coating of the exhaust system. Zinc isoctanoate can form a dense protective film on the metal surface of the exhaust system, effectively preventing the invasion of oxygen and harmful gases, thereby preventing metal oxidation and corrosion.

Case: Toyota exhaust system anti-corrosion coating

Toyota uses an anti-corrosion coating containing zinc isoctanoate in the exhaust system of its new sedan. After high temperature corrosion test, the corrosion resistance time of the coating is approximately 60% longer than that of the conventional coating, and it shows better durability and reliability in actual use. Especially in high temperature environments, this coating can effectively prevent oxidation and corrosion of metal components in the exhaust system, extend its service life, and reduce maintenance and replacement costs. The owner’s feedback showed that after the vehicle using this coating traveled 100,000 kilometers, the metal parts of the exhaust system remained in good condition, and there was no obvious corrosion, and the vehicle’s emission performance was effectively guaranteed.

Synthetic effect of zinc isoctanoate and other materials

In automobile manufacturing, a single material often struggles to meet all performance requirements, so researchers usually use zinc isoctanoate in combination with other functional materials for better overall performance. The synergistic effect of zinc isoctanoate and other materials can not only be further improvedImprove the durability of components and optimize their cost-effectiveness. The following will introduce several common synergistic materials and their combination effects with zinc isoctanoate.

1. Synergistic effects with nanomaterials

Nanomaterials have been widely used in automobile manufacturing in recent years due to their unique physicochemical properties. Nanomaterials have extremely high specific surface area and activity, which can significantly enhance the mechanical properties, corrosion resistance and electrical conductivity of the material. Using zinc isoctanoate in combination with nanomaterials can give full play to the advantages of both and further improve the durability and reliability of components.

Case: Synergistic application of nanotitanium dioxide (TiO?) and zinc isoctanoate

Nanotitanium dioxide (TiO?) has excellent photocatalytic properties and UV resistance, which can effectively prevent the aging and degradation of materials. The researchers found that using nanoTiO? in combination with zinc isoctanoate can form a coating with dual protection in the paint surface of the car body. Zinc isoctanoate can form a dense protective film on the metal surface to prevent moisture and oxygen from invading, while nano-TiO? can absorb ultraviolet rays and prevent the aging of the paint surface. According to a study by Journal of Materials Chemistry A, the aging rate of car body paint surfaces with nano-TiO? and zinc isoctanoate in the UV accelerated aging test was about 60% lower than that of traditional paint surfaces, and it performed in actual use. It has better weather resistance and pollution resistance.

2. Synergistic effects with silicone materials

Silicon materials have excellent high temperature resistance, corrosion resistance and weather resistance, and are widely used in automotive sealants, coatings and lubricants. Combining zinc isoctanoate with silicone materials can significantly improve the overall performance of the material and extend its service life.

Case: Synergistic application of silicone resin and zinc isoctanoate

Silicone resin has excellent high temperature resistance and chemical corrosion resistance, and is suitable for protective coatings for automotive exhaust systems. The researchers found that using silicone resin in combination with zinc isoctanoate can form a coating with dual protection on the metal surface of the exhaust system. Zinc isoctanoate can form a dense protective film on the metal surface to prevent the invasion of oxygen and harmful gases, while silicone resins can provide additional high temperature and corrosion resistance. According to a study in Corrosion Science, the corrosion resistance of exhaust system coatings with silicone resin and zinc isoctanoate in high temperature corrosion tests is approximately 80% longer than that of traditional coatings, and in actual use Shows better durability and reliability.

3. Synergistic effects with phosphate materials

Phosphate materials have excellent anti-rust and corrosion resistance, and are widely used in metal surface treatment and anti-corrosion coatings. Combining zinc isoctanoate with phosphate materials can significantly improve the corrosion resistance of metal surfacescorrosion performance and extend its service life.

Case: Synergistic application of zinc phosphate and zinc isocitate

Zinc phosphate is a commonly used anti-rust agent that can form a dense phosphate film on the metal surface to prevent metal oxidation and corrosion. Researchers found that using zinc phosphate in combination with zinc isoctanoate can form a coating with dual protection on the metal surface of the car chassis. Zinc isoctanoate can form a dense protective film on the metal surface to prevent moisture and oxygen from invading, while zinc phosphate can provide additional anti-rust properties. According to a study by Surface and Coatings Technology, the corrosion resistance of the chassis protective coatings with zinc phosphate and zinc isoctanoate in salt spray tests was approximately 70% longer than that of traditional coatings and performed in actual use. It has better weather resistance and impact resistance.

4. Synergistic effects with polyurethane materials

Polyurethane materials have excellent wear resistance, weather resistance and impact resistance, and are widely used in automotive sealants, coatings and elastomers. Combining zinc isoctanoate with polyurethane materials can significantly improve the overall performance of the material and extend its service life.

Case: Synergistic application of polyurethane elastomer and zinc isoctanoate

Polyurethane elastomers have excellent wear resistance and impact resistance, and are suitable for parts such as automotive suspension systems and shock absorbers. The researchers found that using polyurethane elastomers in combination with zinc isoctanoate can form a coating with dual protection on the surface of these parts. Zinc isoctanoate can form a dense protective film on the metal surface to prevent moisture and oxygen from invading, while polyurethane elastomers can provide additional wear and impact resistance. According to a study by Polymer Testing, suspension systems with polyurethane elastomers and zinc isocaprylate have a wear rate of about 50% lower than traditional systems in simulated road tests and have shown better performance in actual use. Durability and reliability.

Summary and Outlook

To sum up, zinc isoctanoate, as an efficient functional additive, plays a crucial role in automobile manufacturing. Through a detailed analysis of the basic characteristics of zinc isoctanoate, its application status, mechanisms to improve the durability of parts, and synergistic effects with other materials, it can be seen that its huge potential in improving the durability of automotive parts. Zinc isoctanoate can not only significantly reduce the coefficient of friction and reduce wear, but also form a dense protective film on the metal surface, effectively preventing metal oxidation and corrosion and extending the service life of parts. In addition, the collaborative application of zinc isoctanoate and other materials further improves its comprehensive performance and optimizes cost-effectiveness.

1. Advantages of zinc isocitate

  • Excellent lubricating performance: Zinc isoctanoate can form a uniform lubricating film on the metal surface, significantly reduces friction coefficient and reduces wear, suitable for lubricants such as automobile engine oil and gear oil.
  • Strong anti-rust and corrosion resistance: Zinc isoctanoate can react chemically with the metal surface to form a dense protective film, effectively preventing metal oxidation and corrosion, and is suitable for automotive chassis. Protective coating, body paint treatment and anti-corrosion coating for exhaust systems.
  • Excellent antioxidant performance: Zinc isoctanoate has strong antioxidant ability, can maintain its chemical stability under high temperature conditions, preventing the aging and deterioration of oils and coatings, suitable for automobiles Oil products used in high temperature environments such as engine oil and transmission fluid.
  • Good safety and environmental protection: Zinc isocaprylate is not a hazardous chemical, has good biodegradability, and will not cause persistent pollution to the environment, which is in line with the modern automobile industry for green Manufacturing requirements.

2. Future research direction

Although the application of zinc isoctanoate in automobile manufacturing has made significant progress, there are still many directions worth further research. Future research can be carried out from the following aspects:

  • Develop new composite materials: Combine zinc isoctanoate with other functional materials (such as nanomaterials, silicone materials, phosphate materials, etc.) to develop higher performance The composite material further improves the durability and reliability of parts.
  • Optimize production process: By improving the production process, reduce the production cost of zinc isoctanoate and improve its application range in automobile manufacturing. For example, more efficient spray, dip and coating processes are developed to ensure that zinc isoctanoate can evenly cover the metal surface to form an ideal protective film.
  • Expand application fields: In addition to existing application fields, zinc isoctanoate can also be explored in other automotive parts, such as battery shells, electronic components, etc. With the rapid development of electric vehicles and smart cars, zinc isoctanoate has broad application prospects in these emerging fields.
  • Strengthen theoretical research: Further in-depth study of the interaction mechanism between zinc isoctanoate and metal surfaces, reveal its behavioral patterns under different environmental conditions, and provide theoretical support for optimizing its application. For example, through molecular simulation and surface analysis techniques, the adsorption and reaction behavior of zinc isoctanoate under high temperature, high pressure and high humidity conditions are studied to provide guidance for its application in extreme environments.

3. Conclusion

The strategy of zinc isoctanoate to improve the durability of parts in automobile manufacturing has been widely recognized and applied. With the automotive technologyAs technology continues to improve, the requirements for the performance of parts will become higher and higher. As an efficient functional additive, zinc isoctanoate will definitely play a more important role in future automobile manufacturing. Through continuous innovation and research, we have reason to believe that zinc isoctanoate will further promote the sustainable development of the automotive industry and bring more reliable and durable automotive products to consumers.

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