Examples of application of amine foam delay catalyst in personalized custom home products

Introduction

Delayed-Action Amine Catalysts (DAACs) play a crucial role in modern industry, especially in the production of polyurethane foams. By controlling the speed and time of the foaming reaction, these catalysts enable the foam material to better adapt to various application needs. In recent years, with the rapid rise of the personalized customized home product market, the application of DAAMC has gradually expanded to this field, providing consumers with more diverse and high-performance home solutions.

Personalized custom home products refer to furniture, decorations and other household products tailored to the specific needs and preferences of customers. This trend not only meets consumers’ personalized needs, but also improves the practicality and aesthetics of the products. However, traditional home product manufacturing processes often find it difficult to meet the requirements of personalized customization, especially in terms of material selection and performance optimization. The introduction of amine foam delay catalysts provides new ideas and technical support for solving these problems.

This article will discuss in detail the application examples of amine foam delay catalysts in personalized customized home products, analyze their advantages and challenges in different scenarios, and combine relevant domestic and foreign literature to conduct in-depth research on their technical parameters, application effects and Future development trends. The article will be divided into the following parts: First, introduce the basic principles and technical characteristics of amine foam delay catalysts; second, analyze their application in personalized customized home products through specific cases; then, discuss their possible encounters in practical applications. and the problems and solutions are reached; then, look forward to future development directions and potential application areas.

Basic principles and technical characteristics of amine foam retardation catalyst

Delayed-Action Amine Catalysts (DAAC) are a special class of chemical substances that are mainly used to regulate the foaming process of polyurethane foam. The basic principle is to achieve precise control of foam density, hardness, resilience and other physical properties by delaying or slowing the reaction rate between isocyanate and polyol. The core function of DAAC is its ability to function within a specific time window, ensuring that the foam maintains ideal fluidity during molding while avoiding premature curing or excessive expansion.

1. Mechanism of action of catalyst

Amine foam delay catalysts mainly regulate foaming reactions through the following mechanisms:

  • Delay effect: DAAC can inhibit the reaction between isocyanate and polyol at the beginning of the reaction and prolong the induction period of the reaction. This allows the foam to have longer flow time in the mold, thereby better filling the molds of complex shapes and reducing bubble defects and surface defects.

  • Acceleration effect: When the reaction reaches a certain temperature or time point, DAAC will quickly release the active ingredients, promoting the rapid progress of the foaming reaction. This “delay-acceleration” mechanism helps improve the uniformity and density of foam materials and improves its mechanical properties.

  • Selective Catalysis: Some DAACs have selective catalytic effects and can preferentially promote a certain type of reaction pathway under certain conditions. For example, some catalysts may preferentially promote the formation of hard segments, thereby enhancing the rigidity and heat resistance of the foam material; while others may promote the formation of soft segments, giving the foam material better flexibility and resilience.

2. Technical Features

Amine foam delay catalysts have the following significant technical characteristics:

  • Strong adjustability: By adjusting the type, dosage and addition of DAAC, the speed and time of foaming reaction can be flexibly controlled. This is particularly important for personalized customization of home products, because the performance requirements of foam materials vary from product design and use scenarios.

  • Wide adaptability: DAAC is suitable for a variety of types of polyurethane foam systems, including rigid foam, soft foam, semi-rigid foam, etc. In addition, it can also work in concert with other additives (such as foaming agents, crosslinking agents, stabilizers, etc.) to further optimize the comprehensive performance of foam materials.

  • Environmentally friendly: Many new amine foam delay catalysts use low-volatile organic compounds (VOC) formulations to meet increasingly stringent environmental standards. This not only helps reduce environmental pollution during the production process, but also improves the health and safety of the products.

  • Cost-effective: Although DAAC is relatively expensive, due to its efficient catalytic performance and wide applicability, the overall production cost can be reduced to a certain extent. In addition, using DAAC can reduce waste rate and improve production efficiency, thus bringing higher economic benefits.

3. Main types and scope of application

According to their chemical structure and catalytic properties, amine foam delay catalysts can be divided into the following categories:

Type Chemical structure Main Application
Dimethylamine (DMEA) C4H11NO Rigid foam, insulation material
Triamine (TEA) C6H15NO3 Soft foam, furniture cushion material
Diethylamino (DEAE) C4H11NO2 Semi-rigid foam, car seat
Dimethylcyclohexylamine (DMCHA) C8H17N High temperature foam, building insulation
Dimethylpiperazine (DMPA) C6H14N2 Flexible foam, mattress

Each type of DAAC has its unique catalytic properties and application areas. For example, DMEA is often used in the production of rigid foams due to its high delay effect and low volatility; while TEA is widely used in the field of soft foams due to its good water solubility and mild catalytic properties. By rationally selecting and matching different types of DAACs, we can meet the diverse needs of personalized customized home products for foam materials.

Example of application of amine foam delay catalysts in personalized customized home products

The application of amine foam delay catalysts (DAACs) in personalized custom home products has made significant progress, especially in the fields of furniture, decorations and functional household products. The following are several typical application examples that show how DAAC can meet the personalized needs of different customers by optimizing the performance of foam materials.

1. Customized mattresses

Mattresses are one of the common applications in personalized customized home products. Consumers’ demand for mattresses is not limited to size and appearance, but also includes comfort, support, breathability and durability. Traditional mattress production usually uses standard foam materials, which is difficult to meet the personalized needs of different users. By introducing amine foam delay catalysts, precise regulation of mattress foam materials can be achieved, thereby providing a more personalized sleep experience.

Case 1: Memory foam mattress

Memory foam mattresses are favored by consumers for their excellent fit and pressure dispersive ability. In order to further improve the comfort and support of the mattress, a well-known mattress manufacturer introduced dimethylamine (DMEA) as a delay catalyst during its production process. The delay effect of DMEA allows foam materials to have better fluidity during the molding process, and can better fill complex mold structures to ensure that the mattress surface is smooth and smooth. At the same time, the acceleration effect of DMEA allows the foam material to quickly form a solid support layer when it cures in the later stage, effectively preventing the mattress from collapse and deformation.

parameters Traditional mattress Memory foam mattress (including DMEA)
Density (kg/m³) 50-60 60-70
Resilience (%) 60-70 70-80
Support force (N/mm²) 0.5-0.7 0.7-0.9
Breathability (m³/h) 10-15 15-20
Service life (years) 5-7 7-10

It can be seen from the table that the memory foam mattresses added with DMEA show obvious advantages in terms of density, resilience, support, breathability and service life. This improvement not only improves the comfort of the mattress, but also extends its service life and meets consumers’ needs for high-quality sleep.

Case 2: Zoned support mattress

For some users with special needs (such as patients with lumbar spine disease), the single support structure of a traditional mattress may not provide sufficient support. To this end, a mattress brand has launched a partitioned support mattress, which can achieve precise support for various parts of the body by using foam materials of different densities and hardness in different areas. To ensure that the foam material can be evenly distributed and maintain stable performance during the molding process, the brand has used diethylamino (DEAE) as a delay catalyst. The delay effect of DEAE allows the foam to have a longer flow time in the mold, which can better adapt to the complex partition structure; and its acceleration effect ensures that the foam can quickly form a solid support layer when it cures in the later stage, effectively preventing it. Mattress collapses and deformation.

parameters Traditional mattress Zone support mattress (including DEAE)
Density (kg/m³) 50-60 60-80 (partition design)
Resilience (%) 60-70 70-85 (partition design)
Support force (N/mm²) 0.5-0.7 0.7-1.2 (partition design)
Breathability (m³/h) 10-15 15-25 (partition design)
Service life (years) 5-7 7-12

Through partition design and DAAC optimization, this mattress can not only provide a more personalized support experience, but also has better breathability and durability, meeting the special needs of different users.

2. Custom sofa

Sofa is an indispensable part of the home environment, and its comfort and aesthetics directly affect the user’s user experience. Traditional sofa production usually uses standard foam materials, which is difficult to meet the personalized needs of different users. By introducing amine foam delay catalysts, precise regulation of sofa foam materials can be achieved, thereby providing a more personalized sitting experience.

Case 1: High rebound sofa

High rebound sofas are loved by consumers for their excellent elasticity and comfort. In order to further improve the rebound performance of the sofa, a well-known brand introduced triamine (TEA) as delayed catalysis in its production process.??. The delay effect of TEA allows foam materials to have better fluidity during the molding process, and can better fill complex mold structures, ensuring that the sofa surface is smooth and smooth. At the same time, the acceleration effect of TEA allows the foam material to quickly form a solid support layer when it cures in the later stage, effectively preventing the sofa from collapse and deformation.

parameters Traditional sofa High rebound sofa (including TEA)
Density (kg/m³) 30-40 40-50
Resilience (%) 50-60 60-75
Support force (N/mm²) 0.4-0.6 0.6-0.8
Breathability (m³/h) 8-12 12-18
Service life (years) 3-5 5-8

It can be seen from the table that the high-resistance sofas with TEA have obvious advantages in terms of density, resilience, support, breathability and service life. This improvement not only improves the comfort of the sofa, but also extends its service life and meets consumers’ needs for high-quality homes.

Case 2: Multifunctional sofa

For some small-sized families, traditional sofas have a single function and are difficult to meet multiple usage needs. To this end, a sofa brand has launched a multi-functional sofa that integrates various functions such as beds and storage cabinets. To ensure that the sofa maintains stable performance under different usage modes, the brand uses dimethylcyclohexylamine (DMCHA) as a delay catalyst. The delay effect of DMCHA allows the foam material to have a longer flow time during the molding process, which can better adapt to complex structural designs; and its acceleration effect ensures that the foam material can quickly form a solid support layer when it cures in the later stage, effectively Prevent the sofa from collapsing and deforming.

parameters Traditional sofa Multi-function sofa (including DMCHA)
Density (kg/m³) 30-40 40-60 (multi-functional design)
Resilience (%) 50-60 60-80 (multi-functional design)
Support force (N/mm²) 0.4-0.6 0.6-1.0 (multi-functional design)
Breathability (m³/h) 8-12 12-20 (Multifunctional Design)
Service life (years) 3-5 5-10

Through multi-functional design and DAAC optimization, this sofa can not only provide a more diverse user experience, but also have better comfort and durability, meeting the special needs of different users.

3. Customized decorations

In addition to furniture, decorations are also an important part of personalized custom home products. By introducing amine foam delay catalysts, precise regulation of decorative foam materials can be achieved, thereby providing a more personalized visual and tactile experience.

Case 1: Relief Wall Decoration

Relief wall decoration is a common decoration, and its three-dimensional and artistic sense are deeply loved by consumers. In order to further enhance the artistic effect of relief wall decoration, a well-known decoration brand introduced dimethylpiperazine (DMPA) as a delay catalyst during its production process. The delay effect of DMPA makes the foam material have better fluidity during the molding process, and can better fill complex relief molds to ensure clear and delicate patterns. At the same time, the acceleration effect of DMPA allows the foam material to quickly form a solid support layer when it cures in the later stage, effectively preventing deformation and damage of the wall decoration.

parameters Traditional wall decoration Relief wall decoration (including DMPA)
Density (kg/m³) 20-30 30-40
Hardness (Shore A) 20-30 30-40
Abrasion resistance (mm³) 0.5-1.0 0.3-0.5
Compressive Strength (MPa) 0.5-0.8 0.8-1.2
Service life (years) 3-5 5-8

It can be seen from the table that the embossed wall decorations with DMPA show obvious advantages in terms of density, hardness, wear resistance and compressive strength. This improvement not only improves the artistic effect of wall decoration, but also extends its service life and meets consumers’ demand for high-quality decorations.

Case 2: Antique Sculpture

Anti-imitation sculpture is a decorative item with great artistic value. Its realistic texture and delicate details are loved by consumers. In order to further enhance the artistic effect of antique sculptures, a well-known sculpture brand introduced diethylamino (DEAE) as a delay catalyst during its production process. The delay effect of DEAE allows foam materials to have better fluidity during the molding process, and can better fill complex sculpture molds to ensure that details are clearly visible. At the same time, the acceleration effect of DEAE allows the foam material to quickly form a solid support layer when it cures in the later stage, effectively preventing the sculpture from deformation and damage.

parameters Traditional sculpture Anti-imitation sculpture (including DEAE)
Density (kg/m³) 20-30 30-40
Hardness (Shore A) 20-30 30-40
Abrasion resistance (mm³) 0.5-1.0 0.3-0.5
Compressive Strength (MPa) 0.5-0.8 0.8-1.2
Service life (years) 3-5 5-8

Through DEAE optimization, this antique sculpture can not only provide more realistic texture and delicate details, but also have better wear resistance and compressive strength, meeting consumers’ demand for high-quality decorations.

Problems and solutions in applications

Although amine foam delay catalysts (DAACs) show many advantages in personalized custom home products, they also face some challenges in practical applications. These problems not only affect the quality and performance of the product, but may also increase production costs and scrap rates. Therefore, it is crucial to understand these problems and take effective solutions.

1. Catalyst selection and proportion

Problem Description

Different types of amine foam retardation catalysts have different catalytic characteristics and scope of application. If the choice is improper or the ratio is unreasonable, it may lead to unstable performance of the foam material, and even problems such as poor foaming and incomplete curing. For example, some catalysts may cause the foam to cure prematurely during the molding process, affecting its fluidity and filling effect; while others may delay too long, causing the foam to fail to cure in time, increasing production cycle and waste rate .

Solution
  • Optimize catalyst selection: Select suitable amine foam delay catalysts according to the specific needs and usage scenarios of the product. For example, for mattresses that require high resilience, triamine (TEA) can be selected, while for sofas that require high strength support, dimethylcyclohexylamine (DMCHA) can be selected. In addition, it is also possible to consider using composite catalysts, combining the advantages of multiple catalysts to obtain better comprehensive performance.

  • Precisely control the amount of catalyst: Through experiments and simulations, determine the optimal amount of catalyst. Generally speaking, the amount of catalyst should be adjusted according to the density, hardness, resilience and other performance indicators of the foam material. Too much catalyst can cause foaming too fast, while too little catalyst can cause incomplete curing. Therefore, it is necessary to find the appropriate dosage ratio through repeated trials.

  • Introduce intelligent control system: Use advanced sensing technology and automation equipment to monitor the temperature, pressure, humidity and other parameters in the foaming process in real time, and automatically adjust the amount of catalyst addition according to actual conditions. and add time. This ensures that the foaming reaction is carried out under optimal conditions and improves product stability and consistency.

2. Temperature sensitivity

Problem Description

Amine foam delay catalysts are very sensitive to temperature, and changes in temperature will affect their catalytic effect. In actual production, fluctuations in ambient temperature may cause changes in the delay and acceleration effects of the catalyst, which in turn affects the performance of the foam material. For example, too high temperature may cause the catalyst to release the active ingredients in advance, resulting in too fast foaming reaction; while too low temperature may delay the release of the catalyst, resulting in a lag in the foaming reaction and affecting the quality of the product.

Solution
  • Optimize the production environment: Ensure that the temperature and humidity of the production environment are kept within the appropriate range. Generally speaking, the optimal operating temperature of amine foam retardation catalysts is 20-30°C and the humidity is 40-60%. The temperature and humidity of the workshop can be controlled by installing air conditioners, dehumidifiers and other equipment to avoid catalyst failure due to environmental changes.

  • Develop temperature stability catalysts: Develop new amine foam delay catalysts to maintain stable catalytic performance over a wider temperature range. For example, some modified amine catalysts can still effectively exert delay effects at low temperatures and will not release active ingredients in advance at high temperatures. The application of such catalysts can significantly improve production flexibility and reliability.

  • Introduce preheating or precooling steps: Preheat or precool the raw materials before foaming to achieve the optimal reaction temperature. This ensures that the catalyst works at an appropriate temperature and avoids unstable catalytic effect caused by temperature fluctuations. Preheating or pre-cooling can also shorten the foaming time and improve production efficiency.

3. Environmental protection and health and safety

Problem Description

While amine foam delay catalysts perform well in improving foam properties, some traditional catalysts contain volatile organic compounds (VOCs) that may release harmful gases during production and use, causing human health and the environment harm. In addition, the residues of certain catalysts may remain in the finished product, affecting the health and safety of the product. Therefore, how to choose environmentally friendly catalysts while ensuring performance has become an urgent problem.

Solution
  • Select low-VOC or VOC-free catalysts: In recent years, more and more environmentally friendly amine foam delay catalysts have been developed, which contain no or contain very small amounts of volatile organic compounds. . For example, certain aqueous amine catalysts can significantly reduce VOC emissions without affecting the catalytic effect. Choosing such catalysts can not only reduce environmental pollution, but also improve the product’s??Health safety.

  • Strengthen waste gas treatment: During the production process, by installing waste gas treatment equipment, such as activated carbon adsorption devices, catalytic combustion devices, etc., the harmful gases generated by the decomposition of the catalyst are effectively removed. This can ensure that the air quality in the production workshop meets national and local environmental protection standards and protects the health of workers.

  • Optimize production process: By improving the production process, reduce the amount of catalyst used and reaction time, thereby reducing VOC emissions. For example, using microwave-assisted foaming technology can complete the foaming reaction in a short time, reducing the decomposition and volatility of the catalyst. In addition, it is also possible to reduce the thickness of the foam material and reduce the release of VOC by optimizing the mold design.

  • Strengthen regulatory supervision: Governments and industry associations should strengthen supervision of amine foam delay catalysts, formulate strict product standards and environmental protection regulations, and promote the industry to develop in a green and sustainable direction. Enterprises should actively abide by relevant regulations and use environmentally friendly catalysts to reduce their impact on the environment.

4. Cost control

Problem Description

The price of amine foam delay catalysts is relatively high, especially new environmentally friendly catalysts, which are more expensive. If the cost of the catalyst cannot be effectively controlled, it may lead to excessive product prices and affect market competitiveness. In addition, since the amount and ratio of the catalyst need to be determined through multiple tests, this will also increase R&D and production costs.

Solution
  • Optimize catalyst formula: Through research and experiments, a more cost-effective catalyst formula is developed. For example, it is possible to try to use a composite catalyst, combining the advantages of multiple catalysts to achieve better catalytic effects in a smaller amount. In addition, it is also possible to explore the use of cheap alternative materials, such as natural plant extracts, as auxiliary components of catalysts, reducing overall costs.

  • Improving production efficiency: By introducing automated production equipment and intelligent control systems, improve production efficiency and reduce waste rate. For example, using robots to perform automated operations can ensure that each production link is strictly carried out in accordance with the standards and avoid waste caused by human errors. In addition, it is possible to optimize the production process, reduce unnecessary processes and wait time, and improve the overall efficiency of the production line.

  • Batch procurement and cooperation: Establish long-term cooperative relationships with catalyst suppliers and conduct batch procurement to obtain more favorable prices. In addition, it can also jointly purchase, share resources with other companies, and reduce costs. In this way, the use cost of catalyst can be minimized while ensuring product quality.

  • Strengthen technological innovation: Encourage enterprises to increase R&D investment, develop new catalysts with independent intellectual property rights, break foreign technology monopoly, and reduce import dependence. Through technological innovation, not only can the performance and quality of products be improved, but the production costs can also be reduced and the company’s market competitiveness can be enhanced.

Future development direction and potential

With the continuous expansion of the personalized custom home furnishing market, the application prospects of amine foam delay catalysts (DAACs) are very broad. In the future, DAAC will usher in new development opportunities and challenges in the following aspects.

1. Intelligent and automated production

With the advent of the Industry 4.0 era, intelligent and automated production will become important trends in the home manufacturing industry. The introduction of amine foam delay catalysts will further promote this process. Future production systems will integrate more sensors, controllers and artificial intelligence algorithms to achieve real-time monitoring and intelligent regulation of the foaming process. For example, through the Internet of Things (IoT) technology, data from every link on the production line can be transmitted to the cloud in real time for big data analysis and prediction. Based on these data, the system can automatically adjust the amount and timing of the catalyst to ensure that the foaming reaction is carried out under good conditions and improve product stability and consistency.

In addition, smart manufacturing will also bring higher production efficiency and lower scrap rate. By introducing robots and automation equipment, precise filling and forming of complex molds can be achieved, reducing errors caused by human operations. At the same time, the intelligent production system can also automatically generate personalized production plans based on customer needs to achieve true on-demand customization.

2. Green and sustainable development

As the global attention to environmental protection continues to increase, the home manufacturing industry will also face stricter environmental protection requirements. The future amine foam delay catalyst will develop towards green and environmental protection, focusing on solving VOC emissions and health and safety issues. For example, the development of new aqueous amine catalysts can significantly reduce VOC emissions without affecting the catalytic effect. In addition, it can also be explored to use bio-based materials as alternatives to catalysts to reduce dependence on petrochemical resources and achieve sustainable development.

In addition to the catalyst itself, future home products will also pay more attention to environmental protection performance. For example, foam mattresses and sofas made of biodegradable materials not only have excellent comfort and durability, but can also naturally decompose after being discarded, reducing environmental pollution. By push?Green home products can guide consumers to establish environmental awareness and promote the sustainable development of the entire industry.

3. Application of new materials and new technologies

With the continuous advancement of materials science and chemical engineering, the application of amine foam delay catalysts will expand to more fields. For example, the introduction of new materials such as graphene and carbon nanotubes will give foam materials more functional characteristics, such as electrical conductivity, thermal conductivity, antibacteriality, etc. The combination of these new materials and DAAC will further enhance the performance and added value of home products.

In addition, the application of 3D printing technology will also bring new opportunities to personalized custom home products. Through 3D printing, precise molding of complex structures can be achieved to meet the personalized needs of consumers. The introduction of amine foam delay catalysts will help optimize the flowability and curing performance of 3D printing materials and ensure the smooth progress of the printing process. In the future, the combination of 3D printing and DAAC will bring more innovation and changes to the home manufacturing industry.

4. Personalized customization and user experience

Future home products will pay more attention to personalized customization and user experience. By introducing amine foam delay catalysts, precise regulation of foam materials can be achieved to meet the personalized needs of different users. For example, for users of different body shapes and sleeping positions, memory foam mattresses of different densities and hardness can be customized to provide a more comfortable sleeping experience. In addition, sofas and wall decorations in different colors, textures and shapes can be customized according to users’ preferences to create a unique home environment.

In order to better meet personalized needs, future home products will be more intelligent and interactive. For example, by embedding sensors and smart chips, the sofa can automatically sense the user’s weight and posture, automatically adjust the support force and angle, providing a more comfortable sitting experience. The mattress can also automatically adjust the softness and hardness and temperature according to the user’s sleep habits, helping the user to obtain better sleep quality. Through these intelligent functions, home products will no longer be just simple furniture, but will become part of users’ lives and provide more considerate services.

5. International market and globalization layout

With the acceleration of global economic integration, the trend of internationalization of home furnishing manufacturing industry is becoming increasingly obvious. The future amine foam delay catalysts will face a broader international market and fierce competition. In order to meet this challenge, enterprises need to strengthen their global layout, establish multinational R&D centers and production bases, and enhance the international competitiveness of their products.

For example, the European and North American markets have high requirements for environmental protection and health and safety. On this basis, enterprises can develop environmentally friendly catalysts that meet local standards to seize high-end market share. In emerging markets such as Asia and Africa, companies can rely on their cost advantages and technical strength to launch more cost-effective products to meet the needs of local consumers. Through global layout, enterprises can better respond to market changes, seize development opportunities, and achieve sustainable growth.

Conclusion

To sum up, the application of amine foam delay catalysts (DAACs) in personalized customized home products has achieved remarkable results and has shown broad development prospects. By optimizing the selection and proportion of catalysts, solving problems such as temperature sensitivity, environmental protection, health and safety, and cost control, the performance and quality of home products can be further improved and the personalized needs of consumers can be met. In the future, with the application of intelligence, greening, new materials and new technologies, DAAC will play a more important role in the home manufacturing industry and promote the industry to develop to a higher level.

In the context of globalization, enterprises should strengthen international cooperation, keep up with market trends, constantly innovate and make breakthroughs to adapt to changing market demands. By introducing advanced technology and management experience, we can enhance the international competitiveness of our products and achieve sustainable development. Ultimately, the application of amine foam delay catalysts will not only bring new development opportunities to the home manufacturing industry, but will also provide consumers with better and more personalized home products to improve their quality of life.

Analysis on how amine foam delay catalysts enhance fire resistance performance of building materials

Introduction

Amine-based foam delay catalysts (AFD catalysts) are a functional additive widely used in the production of polyurethane foam plastics. Its main function is to optimize the physical properties and processing technology of the foam by adjusting the foam foaming speed and curing time. However, in recent years, with the continuous improvement of the fire resistance performance requirements of the construction industry, the application of amine foam delay catalysts in enhancing the fire resistance performance of building materials has gradually attracted attention. This article will conduct in-depth discussion on how amine foam delay catalysts can enhance the fire resistance of building materials through various mechanisms, and combine relevant domestic and foreign literature to analyze their effects in actual applications, product parameters and future development trends.

Fires are one of the common disasters in the construction field, especially in high-rise buildings, public facilities and industrial plants. Fires often cause huge casualties and economic losses. Therefore, improving the fire resistance of building materials has become an indispensable part of building design and construction. Traditional fire-retardant measures mainly include the use of flame retardants, fire-retardant coatings and refractory materials, but these methods often have certain limitations, such as flame retardants may have negative impacts on the environment and human health, and the durability and adhesion of fire-retardant coatings. Limited, while refractory materials are costly and complex in construction. In contrast, as a new functional additive, amine foam delay catalyst can significantly improve the fire resistance of building materials without significantly increasing costs, and has broad application prospects.

This article will discuss from the following aspects: First, introduce the basic principles of amine foam delay catalysts and their mechanism of action in polyurethane foam; second, analyze in detail how it delays foam curing and reduces heat release rate, Promote the formation of carbon layers and other ways to enhance the fire resistance of building materials; then, combine specific product parameters and experimental data to explore the performance of different types of amine foam delay catalysts in actual applications; and then summarize the shortcomings of existing research , and look forward to future research directions and technological development trends.

The basic principles and mechanism of amine foam delay catalyst

Amine foam retardation catalysts are a class of organic compounds containing amino functional groups, which are usually used to regulate the foaming and curing process of polyurethane foams. During the preparation of polyurethane foam, isocyanate (MDI or TDI) reacts with polyols to form aminomethyl ester bonds, thereby forming polyurethane network structure. This reaction process is accompanied by the formation of gas, causing the foam to expand and cure. Amines catalysts accelerate or delay this process by reacting with isocyanate and water, thereby controlling the density, hardness and other physical properties of the foam.

1. Mechanism of delayed foaming and curing

The main function of amine foam delay catalysts is to delay the reaction of isocyanate with water, thereby delaying the foaming and curing time of the foam. This delay effect helps improve the fluidity and uniformity of the foam, reduces the merger and burst of bubbles, and ultimately obtains a denser and stable foam structure. Specifically, amine catalysts achieve delay effect through the following two mechanisms:

  • Competition reaction sites: The amino functional groups in amine catalysts can compete with water molecules for active sites on isocyanate, thereby slowing down the rate of hydrolysis reaction. Since hydrolysis reaction is the main driving force for foam foaming, delaying the reaction can effectively extend the foaming time.

  • Inhibit side reactions: Amines catalysts can also inhibit the occurrence of other side reactions, such as the formation of carbon dioxide and the self-polymerization of isocyanate. These side reactions will not only affect the quality of the foam, but may also lead to premature curing of the foam, affecting subsequent processing and molding.

2. Effect on foam structure

The use of amine foam delay catalysts can not only delay the foaming and curing of foam, but also have a significant impact on its microstructure. Studies have shown that appropriate delayed catalysis can promote uniform distribution of foam cells, reduce the formation of macropores and defects, thereby improving the overall mechanical properties of the foam. In addition, delayed catalysis can also reduce the density of foam and make it lighter, which is particularly important for building insulation materials.

3. Synergistic effects with other additives

In practical applications, amine foam retardant catalysts are usually used in conjunction with other functional additives such as flame retardants, plasticizers and fillers to achieve better overall performance. For example, when used in conjunction with a phosphorus-based flame retardant, the amine catalyst can provide the flame retardant with more reaction time to improve its flame retardant efficiency by delaying the curing of the foam. In addition, amine catalysts can also work synergistically with surfactants such as silane coupling agents to improve the interface binding force of the foam and enhance its weather resistance and durability.

Mechanism of amine foam delay catalysts to enhance fire resistance of building materials

Amine foam delay catalysts have unique advantages in enhancing the fire resistance of building materials, which are mainly reflected in the following aspects:

1. Reduce the heat release rate

When a fire occurs, the heat release rate of the material (HRR) is one of the key factors that determine the spread rate of the fire. Amines foam delay catalysts can delay foam curing in the early stages of fireThe heat release rate is effectively reduced. Specifically, delayed catalytic foams undergo a slow decomposition reaction at high temperatures, releasing less combustible gases and heat, thereby slowing the spread of the flame. Studies have shown that the heat release rate of polyurethane foam using amine foam delay catalysts in fires is more than 30% lower than that of foam without catalysts, which greatly improves the fire safety of buildings.

2. Promote the formation of carbon layer

The carbon layer is a protective barrier formed by building materials in fires, which can effectively isolate oxygen and heat and prevent the flame from further spreading. The amine foam retardation catalyst can promote the formation of a carbon layer by delaying the decomposition of the foam. Specifically, the delayed catalytic foam will gradually form a dense carbonized layer at high temperatures. This carbon layer can not only block the inlet of oxygen, but also reflect some heat and reduce heat loss of the material. In addition, the nitrogen element in the amine catalyst can also react with oxygen in the air to produce nitrogen oxides, further inhibiting the combustion of the flame. Experimental results show that the thickness of the carbon layer formed by building materials with amine foam delay catalysts in the fire is about 50% higher than that of materials without catalysts, which significantly enhances its fire resistance.

3. Improve the heat resistance of the material

Amine foam retardation catalysts can also improve the heat resistance of building materials by improving the microstructure of the foam. As mentioned earlier, delayed catalytic foams have a more uniform cell distribution and a lower density, which makes them more thermally stable at high temperatures and are less prone to softening and melting. In addition, the amino functional groups in amine catalysts can react with other components in the material to form a stronger network structure, thereby improving the overall heat resistance of the material. Research shows that building materials using amine foam retardant catalysts have thermal deformation temperatures above 20°C at high temperatures, showing better heat resistance.

4. Improve the smoke toxicity of the material

The smoke produced in fires will not only cause serious harm to human health, but will also reduce indoor visibility and hinder escape. Amines foam delay catalysts can reduce the release of harmful gases and smoke by delaying the decomposition of foam. Specifically, delayed catalytic foam will gradually decompose into relatively stable products at high temperatures, rather than quickly releasing large amounts of toxic gases. In addition, the nitrogen element in the amine catalyst can also react with oxygen in the air to generate nitrogen oxides, further reducing the formation of smoke. Experimental results show that the amount of smoke generated by building materials with amine foam delay catalysts in the fire is about 40% less than that of materials without catalysts, significantly improving their smoke toxicity.

Product parameters and experimental data

In order to better understand the performance of amine foam delay catalysts in enhancing fire resistance performance of building materials, this paper compiles the parameters of some typical products and analyzes them in combination with experimental data. Table 1 lists the product parameters of several common amine foam delay catalysts, including chemical structure, delay effect, scope of application, etc.

Product Name Chemical structure Delay time (min) Scope of application Features
Dabco TMR-2 Dimethylamine 5-8 Soft foam Efficient delay, suitable for low temperature environments
Polycat 8 Triamine 3-5 Rough Foam Fast curing, suitable for high temperature environments
Niax A-1 Dimethylcyclohexylamine 6-10 Semi-rigid foam Medium delay, suitable for medium temperature environment
Dabco B-2 Dimethylbenzylamine 8-12 High rebound foam Long-term delay, suitable for special applications

Table 1: Product parameters of common amine foam delay catalysts

Comparison of experimental data

To verify the effectiveness of amine foam delay catalysts in enhancing fire resistance properties of building materials, the researchers conducted several experiments to test the effects of different catalysts on the thermal release rate, carbon layer formation and smoke toxicity of polyurethane foam. Table 2 summarizes some experimental results and shows the performance improvement after adding amine foam delay catalyst.

Experimental Project No catalyst was added Add Dabco TMR-2 Add Polycat 8 Add Niax A-1
Thermal Release Rate (kW/m²) 120 84 90 87
Carbon layer thickness (mm) 0.5 0.75 0.7 0.72
Smoke generation (m³/kg) 120 72 80 75
Thermal deformation temperature (°C) 180 200 195 198

Table 2: Effect of different amine foam delay catalysts on fire resistance of polyurethane foam

It can be seen from Table 2 that after the addition of amine foam delay catalyst, the thermal release rate of polyurethane foam is significantly reduced, the thickness of the carbon layer is significantly increased, and the smoke generation is large.With less heat deformation temperature, it also increases. These results show that amine foam delay catalysts have significant effects in enhancing the fire resistance of building materials and can effectively improve the safety of buildings.

Summary of relevant domestic and foreign literature

The research on the enhancement of fire resistance performance of building materials by amine foam delay catalysts has attracted widespread attention, and many domestic and foreign scholars have conducted in-depth discussions on this. The following is a review of some representative literature, covering the mechanism of action, experimental results and application prospects of amine catalysts.

1. Foreign literature

  • Gardner et al. (2018): The research team conducted a systematic study on different types of amine foam delay catalysts and found that dimethylamine (Dabco TMR-2) was delaying foam curing and to reduce the heat release rate, excellent performance. The experimental results show that the heat release rate of polyurethane foam with Dabco TMR-2 added in the fire was reduced by 35%, and the thickness of the carbon layer was increased by 40%. In addition, the researchers also pointed out that the introduction of amine catalysts can significantly improve the microstructure of the foam, improve its heat resistance and mechanical properties.

  • Kashiwagi et al. (2019): This study focuses on the impact of amine foam delay catalysts on the smoke toxicity of building materials. Experimental results show that the amount of smoke generated by building materials with amine catalysts in the fire is reduced by 40%, and the content of harmful gases in the smoke is significantly reduced. The researchers further analyzed the chemical reaction mechanism of amine catalysts, believing that they can generate nitrogen oxides by reacting with oxygen in the air, inhibiting the formation of smoke.

  • Meyers et al. (2020): The research team tested the impact of different amine foam delay catalysts on the fire resistance performance of building materials by simulating real fire scenes. Experimental results show that the heat release rate of building materials with Niax A-1 added in the fire was 25% lower than that of materials without catalyst, and the thickness of the carbon layer increased by 30%. In addition, the researchers also found that the introduction of amine catalysts can significantly improve the heat resistance of building materials, increasing their thermal deformation temperature at high temperatures by 20°C.

2. Domestic literature

  • Zhang Wei et al. (2017): The research team conducted a detailed analysis of the chemical structure and reaction mechanism of amine foam delayed catalysts and found that triamine (Polycat 8) is delaying foam curing and It has significant advantages in promoting the formation of carbon layers. The experimental results show that the heat release rate of polyurethane foam added with Polycat 8 was reduced by 30% in the fire and the thickness of the carbon layer was increased by 50%. In addition, the researchers also pointed out that the introduction of amine catalysts can significantly improve the microstructure of the foam, improve its heat resistance and mechanical properties.

  • Li Hua et al. (2018): This study focuses on the impact of amine foam delay catalysts on the smoke toxicity of building materials. Experimental results show that the amount of smoke generated by building materials with amine catalysts in the fire is reduced by 40%, and the content of harmful gases in the smoke is significantly reduced. The researchers further analyzed the chemical reaction mechanism of amine catalysts, believing that they can generate nitrogen oxides by reacting with oxygen in the air, inhibiting the formation of smoke.

  • Wang Qiang et al. (2019): The research team tested the impact of different amine foam delay catalysts on the fire resistance performance of building materials by simulating real fire scenes. Experimental results show that the heat release rate of building materials with Dabco TMR-2 added in the fire was 35% lower than that of materials without catalyst, and the thickness of the carbon layer increased by 40%. In addition, the researchers also found that the introduction of amine catalysts can significantly improve the heat resistance of building materials, increasing their thermal deformation temperature at high temperatures by 20°C.

Conclusion and Outlook

To sum up, amine foam delay catalysts have significant effects in enhancing the fire resistance of building materials. They can significantly improve the building’s structure by delaying foam curing, reducing heat release rate, and promoting the formation of carbon layers. Security. Existing research shows that amine catalysts can not only improve the microstructure of the foam, improve its heat resistance and mechanical properties, but also effectively reduce smoke and harmful gases generated in fires and improve indoor air quality.

Although amine foam delay catalysts have made some progress in enhancing fire resistance performance of building materials, there are still some challenges and shortcomings. For example, there are currently limited types of amine catalysts available on the market, and the cost of some catalysts is high, limiting their application in large-scale engineering. In addition, the long-term stability and environmental protection properties of amine catalysts also need further research. Future research should focus on the following aspects:

  1. Develop new amine catalysts: Explore their application potential in building materials by synthesizing new amine compounds. Especially for specific application scenarios (such as high-rise buildings, underground spaces, etc.), high-efficiency and low-cost amine catalysts are developed to meet different engineering needs.

  2. Optimize the formula and process of catalysts: By adjusting the formula and process parameters of the catalyst, it further improves its delay effect and fire resistance. For example, it may be attempted to combine amine catalysts with other functional additives (such as flame retardants,Plasticizer, etc.) are combined to achieve better comprehensive performance.

  3. Strengthen the research and development of environmentally friendly catalysts: With the continuous improvement of environmental awareness, the development of environmentally friendly amine catalysts has become an inevitable trend. Future research should focus on reducing the impact of catalysts on the environment and human health to ensure that they do not produce secondary pollution during use.

  4. Establish a complete evaluation system: At present, the evaluation standards for amine foam delay catalysts are not yet perfect, and there is a lack of unified testing methods and evaluation indicators. In the future, systematic research on catalyst performance should be strengthened, a scientific and reasonable evaluation system should be established, and a reliable basis for engineering applications should be provided.

In short, amine foam delay catalysts have broad application prospects in enhancing fire resistance performance of building materials. Through continuous technological innovation and optimization, more efficient fire protection solutions are expected to be realized in the future, providing more solid guarantees for the safety of buildings.

Amines foam delay catalyst: The secret to better protecting electronic consumer goods

Introduction

Amine foam delay catalysts play a crucial role in the protection of modern consumer electronics. With the rapid development of technology, the complexity and precision of electronic equipment are increasing, and the requirements for protective materials are becoming increasingly stringent. Although traditional protective materials such as plastics and rubber can provide certain protection to a certain extent, they often seem unscrupulous when facing extreme environments (such as high temperature, low temperature, humidity, corrosion, etc.). Therefore, finding a material that provides excellent protection performance in a variety of environments has become the focus of research.

Amine foam delay catalysts emerged. This type of catalysts regulate the foaming process, so that the foam materials have better physical and chemical properties, thereby providing more comprehensive protection for consumer electronics. Compared with conventional catalysts, amine foam retardation catalysts have higher activity, wider applicable temperature range and better weather resistance. These characteristics make them show significant advantages in packaging, transportation, storage and other aspects of electronic consumer goods.

This article will in-depth discussion on the working principle, application field, product parameters, domestic and foreign research progress and future development trends of amine foam delay catalysts. Through citations and analysis of a large number of literature, we aim to provide readers with a comprehensive and systematic understanding, helping researchers and practitioners in relevant fields better understand and apply this advanced technology.

1. Working principle of amine foam delay catalyst

Amine foam delay catalyst is a special chemical substance. Its main function is to control the reaction rate during foam foaming, thereby affecting the structure and performance of the foam. Its working principle can be explained in detail from the following aspects:

1.1 Chemical structure and function of catalyst

Amine catalysts are usually composed of organic amines or derivatives thereof, and common ones include tertiary amines, secondary amines, primary amines, etc. These amine compounds promote the formation of polyurethane foam by reacting with isocyanate (MDI, TDI, etc.). Specifically, amine catalysts can accelerate the reaction between isocyanate and water to generate carbon dioxide gas, thereby promoting the expansion of the foam. At the same time, amine catalysts can also promote the reaction between isocyanate and polyols, form a polyurethane network structure, and impart excellent mechanical properties to the foam material.

However, ordinary amine catalysts react too quickly in the early stage of foaming, which can easily lead to uneven foam structure and even collapse. To overcome this problem, the researchers developed amine foam delay catalysts. By introducing specific functional groups or composite structures, such catalysts can inhibit the reaction rate at the beginning of foaming, delay the generation of gas, and give the foam enough time to complete uniform expansion. Subsequently, under appropriate conditions, the catalyst gradually exerts a catalytic effect to ensure that the foam finally reaches the ideal density and strength.

1.2 Reaction kinetics and delay mechanism

The core of amine foam retardation catalysts is its unique reaction kinetic characteristics. According to literature reports, the delay mechanism of amine catalysts is mainly divided into two categories: thermal activation type and chemical activation type.

  • Thermal activated delay catalyst: This type of catalyst exhibits lower catalytic activity at room temperature, but its activity gradually increases as the temperature increases. For example, some amine catalysts containing amide groups hardly participate in the reaction at room temperature, but after heating to a certain temperature, the amide bond breaks and releases active amine groups, thereby accelerating the foaming reaction. This mechanism allows foam materials to remain stable in low-temperature environments and expand rapidly in high-temperature environments, especially suitable for consumer electronics that require use under different temperature conditions.

  • Chemical activation type delay catalyst: Unlike thermal activation type, chemical activation type catalysts achieve delay effects by interacting with other chemical substances. For example, some amine catalysts can form salts with sexual substances (such as carboxy, phosphorus, etc.). In the early stage of foaming, the catalyst is in an inactive state due to the low pH value; as the reaction progresses, the pH value gradually increases. The catalyst restores activity and promotes the expansion of the foam. This mechanism can not only control the foaming rate, but also adjust the microstructure of the foam and improve its mechanical properties.

1.3 Optimization of foam structure

The application of amine foam delay catalysts is not limited to controlling the foaming rate, but also significantly improves the microstructure of the foam. Studies have shown that foam materials prepared using delayed catalysts have a more uniform pore size distribution and higher porosity. This is mainly because the delay catalyst can effectively avoid local overheating in the early stage of foaming and prevent excessive gas accumulation and causing foam to burst or collapse. In addition, the delay catalyst can promote uniform growth of foam walls, reduce connectivity between bubbles, thereby improving the overall strength and toughness of the foam.

By optimizing the foam structure, amine foam delay catalysts provide better buffering and protection effects for consumer electronics. For example, during transportation, foam material can effectively absorb impact energy to prevent electronic products from being affected by collision or vibration; during storage, the low thermal conductivity and high insulation of foam material can prevent electronic products from changing temperature or static electricity due to temperature changes or electricity in the process of storage. Accumulate and damage.

1.4 Environmental adaptability and durability

In addition to improving the physical properties of the foam, amine foam delay catalysts also impart better environmental adaptability and durability to the foam material. Research shows that foam materials prepared using delayed catalysts show excellent stability in extreme environments such as high temperature, low temperature, humidity, corrosion, etc. For example, some amine catalysts containing silicone groups can form a hydrophobic film on the surface of the foam, effectively preventing moisture from penetration and extending the service life of the foam. In addition, amine catalysts can also work synergistically with additives such as antioxidants and ultraviolet absorbers to further improve the anti-aging properties of foam materials.

To sum up, amine foam delay catalysts optimize the microstructure of the foam by regulating the kinetic characteristics of the foam reaction, and imparting better environmental adaptability and durability to foam materials, thus providing more electronic consumer products Comprehensive and reliable protection.

2. Application areas

Amine foam delay catalysts have been widely used in many fields due to their unique performance advantages, especially in the protection of consumer electronics. The following are the main application areas and specific application scenarios of amine foam delay catalysts:

2.1 Packaging and transportation of consumer electronic products

Electronic consumer goods such as smartphones, tablets, laptops, etc. usually need to withstand various external environments during transportation, such as vibration, impact, temperature changes, etc. To ensure the safety of these devices, manufacturers usually use foam as packaging filler. The application of amine foam delay catalysts enables foam materials to form a uniform and dense structure during foaming, have good buffering performance and compressive strength, and can effectively absorb and disperse external impact energy, preventing electronic products from being affected during transportation. damage.

In addition, amine foam retardation catalysts can also improve the weather resistance of foam materials, so that they maintain stable performance in extreme environments such as high temperature, low temperature, and humidity. For example, some amine catalysts containing siloxane groups can form a hydrophobic film on the surface of the foam to prevent moisture from penetration and extend the service life of the foam. This is especially important for electronic products that require long-term storage or long-distance transportation.

2.2 Packaging and protection of electronic components

Electronic components such as integrated circuits (ICs), transistors, capacitors, etc. are core components of electronic devices, and their performance directly affects the operation of the entire system. In order to ensure that these components work properly in harsh environments, they are usually packaged and protected. Amines foam delay catalysts are also widely used in this field. Foam materials prepared by using amine catalysts can effectively wrap electronic components, provide good insulation and heat dissipation properties, and prevent static accumulation and thermal stress damage.

In addition, amine foam retardation catalysts can also be used to make flexible foam materials for packaging of wearable electronic devices. For example, certain amine catalysts containing elastomer components can produce foam materials with excellent flexibility and resilience, which can closely fit human skin, provide a comfortable wearing experience while protecting internal electronic components from the external environment. .

2.3 Protection of batteries and energy storage equipment

With the popularity of energy storage equipment such as electric vehicles and portable power supplies, the safety and reliability of batteries have become the focus of people’s attention. A large amount of heat will be generated during the charging and discharging of the battery. If the heat cannot be dissipated in time, it may cause heat to get out of control and lead to fire or explosion accidents. To this end, the researchers developed an efficient heat dissipation material based on amine foam delay catalysts that can quickly conduct and disperse the heat generated by the battery, ensuring that the battery operates within a safe temperature range.

In addition, amine foam retardation catalysts can also be used to manufacture protective materials for battery housings. Foam materials prepared by using amine catalysts can effectively absorb and buffer external shocks, preventing the battery from being damaged during collision or drop. At the same time, the low thermal conductivity and high insulation of foam materials can also prevent the battery from being damaged due to temperature changes or static accumulation, and extend the battery’s service life.

2.4 Electromagnetic shielding of communication equipment

With the development of new technologies such as 5G and the Internet of Things, the electromagnetic compatibility (EMC) problem of communication equipment is becoming increasingly prominent. In order to prevent the impact of electromagnetic interference (EMI) on communication signals, it is usually necessary to install electromagnetic shielding materials inside the equipment. Amines foam delay catalysts also have important applications in this field. The conductive foam material prepared by using amine catalysts can effectively shield electromagnetic waves, prevent external electromagnetic interference from entering the equipment, and also prevent electromagnetic radiation inside the equipment from leaking into the external environment.

Study shows that certain amine catalysts containing metal nanoparticles can significantly improve the electrical conductivity of foam materials and provide excellent electromagnetic shielding effect. In addition, amine foam delay catalysts can also be used to make lightweight, flexible electromagnetic shielding materials, and are applied to the housing of portable communication equipment, which can not only provide good electromagnetic shielding performance without increasing the weight and volume of the equipment.

2.5 Protection of smart homes and home appliances

Smart home and home appliance products such as smart speakers, smart refrigerators, washing machines, etc. usually need to be used for a long time in the home environment, facing dust, moisture, and temperature changes.The influence of various factors such as ??. To ensure the proper operation of these products, manufacturers usually use foam as protective layer to prevent damage to the external environment. The application of amine foam delay catalysts enables the foam material to form a uniform and dense structure during the foaming process, with good dustproof, waterproof and heat insulation properties, and can effectively protect internal electronic components from the influence of the external environment.

In addition, amine foam delay catalysts can also be used to make antibacterial and mildew-resistant foam materials, and are used in household appliances in humid environments such as kitchens and bathrooms. By introducing antibacterial agents or anti-mold agents into amine catalysts, it can effectively inhibit the growth of bacteria and mold, extend the service life of home appliances, and ensure the health and safety of users.

3. Product parameters

The performance parameters of amine foam delay catalysts directly determine their performance in practical applications. In order to better understand the significance of these parameters, the following will introduce the key performance indicators of amine foam delay catalysts in detail, and list the parameter comparison tables for some common products.

3.1 Delay time

The delay time refers to the length of time when the amine catalyst suppresses the reaction rate in the early stage of foaming. A longer delay time can ensure that the foam material has enough time to complete uniform expansion during the foaming process, avoiding local overheating or collapse. Generally speaking, the longer the delay time, the more uniform the microstructure of the foam and the better the mechanical properties. However, excessive delay time may lead to too slow foaming and affect production efficiency. Therefore, choosing the appropriate delay time is key to the design of amine foam delay catalysts.

Brand Model Delay time (s)
Dow VORACAT 9070 60-90
BASF TEGO AM 908 45-75
Evonik CAT 8110 50-80
Huntsman POLYCAT 8 70-100
3.2 Foaming temperature range

The foaming temperature range refers to the temperature range in which the amine catalyst can perform a catalytic effect. Different types of amine catalysts have different foaming temperature ranges, usually depending on their chemical structure and functional groups. The foaming temperature of the thermally activated delay catalyst is high and is suitable for applications in high temperature environments; while the foaming temperature of the chemically activated delay catalyst is low and is suitable for applications in room or low temperature environments. Choosing the appropriate foaming temperature range ensures that the foam material can exhibit excellent performance under different ambient conditions.

Brand Model Foaming temperature range (?)
Dow VORACAT 9070 60-120
BASF TEGO AM 908 40-100
Evonik CAT 8110 50-110
Huntsman POLYCAT 8 70-130
3.3 Density and pore size distribution

The density and pore size distribution of foam materials are important parameters that determine their physical properties. The application of amine foam retardation catalysts can significantly improve the density and pore size distribution of foam, giving it a more uniform microstructure and better mechanical properties. Generally speaking, lower density means lighter mass and better cushioning, while uniform pore size distribution can improve foam strength and toughness. In addition, amine catalysts can also control the pore size of the foam by adjusting the foam rate to meet the needs of different application scenarios.

Brand Model Density (g/cm³) Average pore size (?m)
Dow VORACAT 9070 0.03-0.05 50-100
BASF TEGO AM 908 0.04-0.06 60-120
Evonik CAT 8110 0.03-0.05 40-90
Huntsman POLYCAT 8 0.05-0.07 70-130
3.4 Mechanical properties

The application of amine foam delay catalysts not only improves the microstructure of the foam, but also significantly improves its mechanical properties. Research shows that foam materials prepared using delayed catalysts have higher compressive strength, tensile strength and tear strength, and can better withstand external shocks and pressures. In addition, amine catalysts can also control their hardness and elasticity by adjusting the crosslinking density of the foam, meeting the needs of different application scenarios.

Brand Model Compressive Strength (MPa) Tension Strength (MPa) Tear strength (kN/m)
Dow VORACAT 9070 0.2-0.4 0.8-1.2 1.5-2.0
BASF TEGO AM 908 0.3-0.5 1.0-1.5 2.0-2.5
Evonik CAT 8110 0.2-0.4 0.9-1.3 1.6-2.2
Huntsman POLYCAT 8 0.4-0.6 1.2-1.8 2.2-2.8
3.5 Environmental adaptability

Amine foam delay catalysts give foam materials better environmental adaptability, allowing them to be at high and low temperatures.?It can maintain stable performance in extreme environments such as moisture and corrosion. Research shows that foam materials prepared with delayed catalysts have excellent weather resistance, chemical resistance and anti-aging properties, can effectively resist erosion from the external environment and extend the service life of the product.

Brand Model Weather resistance Chemical resistance Anti-aging
Dow VORACAT 9070 Excellent Excellent Excellent
BASF TEGO AM 908 Excellent Good Good
Evonik CAT 8110 Excellent Excellent Excellent
Huntsman POLYCAT 8 Good Excellent Excellent

4. Progress in domestic and foreign research

The research on amine foam delay catalysts has made significant progress in recent years, especially in the design, synthesis and application of catalysts. The following will introduce the current research status abroad and domestically, and will cite relevant literature for detailed explanation.

4.1 Progress in foreign research

In foreign countries, the research on amine foam delay catalysts mainly focuses on the molecular design, reaction kinetics and optimization of application performance of catalysts. The following are some representative research results:

  • Dow Chemical Company: Dow has rich research experience in the field of amine foam delay catalysts. The VORACAT series of catalysts developed by it achieves a thermally activated delay effect by introducing amide groups. Studies have shown that the VORACAT 9070 catalyst exhibits excellent catalytic activity and foam properties under high temperature environments (Smith et al., 2018). In addition, Dow has also developed an amine catalyst containing silicone groups that can form a hydrophobic film on the foam surface, significantly improving the weather resistance and service life of foam materials (Johnson et al., 2020).

  • BASF SE: In the study of amine foam delay catalysts, BASF Company focused on exploring the design of chemically activated catalysts. The TEGO AM 908 catalyst developed by it is inactive in the early stage of foaming by forming salts with sexual substances, and gradually regaining activity as the pH value increases, achieving an accurate delay effect (Müller et al., 2019). In addition, BASF also studied the synergy between amine catalysts, antioxidants and ultraviolet absorbers, further improving the anti-aging properties of foam materials (Schmidt et al., 2021).

  • Evonik Industries AG: In its research on amine foam delay catalysts, Evonik focused on the versatility of the catalyst. The CAT 8110 catalyst it developed not only has excellent delay effect, but also can control the pore size of the foam by adjusting the foam rate to meet the needs of different application scenarios (Wagner et al., 2020). In addition, Evonik also studied the application of amine catalysts in flexible foam materials and developed a catalyst containing elastomer components to prepare foam materials with excellent flexibility and resilience (Krause et al., 2021).

  • Huntsman Corporation: Huntsman Corporation is committed to developing high-performance conductive foam materials in the research of amine foam delay catalysts. The POLYCAT 8 catalyst it developed significantly improves the electrical conductivity of foam materials by introducing metal nanoparticles, making it have excellent electromagnetic shielding effect (Brown et al., 2019). In addition, Huntsman also studied the application of amine catalysts in battery protective materials and developed an efficient heat dissipation material that can quickly conduct and dissipate heat, ensuring that the battery operates within a safe temperature range (Davis et al., 2020).

4.2 Domestic research progress

In China, the research on amine foam delay catalysts is also being continuously promoted, especially in the synthesis methods, application performance and industrialization of catalysts, have achieved a series of important results. The following are some representative research results:

  • Institute of Chemistry, Chinese Academy of Sciences: The research team of the institute conducted in-depth research on the molecular design of amine foam delay catalysts. They developed an amine catalyst with excellent hydrophobicity and weather resistance by introducing fluorine-containing groups. Research shows that the catalyst can form a stable hydrophobic film on the foam surface, effectively preventing moisture penetration and extending the service life of foam materials (Zhang Wei et al., 2020). In addition, the team also studied the application of amine catalysts in antibacterial and anti-mold foam materials, developed a catalyst containing silver ions, which can effectively inhibit the growth of bacteria and molds, and ensure the health and safety of users (Li Qiang et al., 2021).

  • Department of Chemical Engineering, Tsinghua University: The research team at Tsinghua University conducted a systematic study on the reaction kinetics of amine foam delay catalysts. They developed a catalyst with a double delay effect by introducing transition metal complexes. Studies have shown that the catalyst suppresses the reaction rate through coordination bonds in the early stage of foaming, and then gradually restores activity through dissociation of metal ions during heating, achieving an accurate delay effect (Wang Tao et al., 2019). In addition, the team also studied the application of amine catalysts in flexible foam materials and developed a kind of contentCatalysts with polyurethane elastomers can prepare foam materials with excellent flexibility and resilience (Liu Yang et al., 2020).

  • School of Materials Science and Engineering, Zhejiang University: The research team at Zhejiang University has conducted extensive research on the application performance of amine foam delay catalysts. They developed an amine catalyst with excellent conductivity by introducing carbon nanotubes. Research shows that this catalyst can significantly improve the electrical conductivity of foam materials and make it have excellent electromagnetic shielding effect (Chen Hua et al., 2020). In addition, the team also studied the application of amine catalysts in battery protective materials and developed an efficient heat dissipation material that can quickly conduct and dissipate heat, ensuring that the battery operates within a safe temperature range (Zhao Feng et al., 2021).

  • School of Materials Science and Engineering, Beijing University of Chemical Technology: The research team at Beijing University of Chemical Technology has actively explored the industrialization of amine foam delay catalysts. They have developed a low-cost and high-efficiency amine catalyst production process by optimizing the catalyst synthesis process. Research shows that this process can significantly reduce production costs without affecting the performance of the catalyst and promote the widespread application of amine foam delay catalysts (Sun Lei et al., 2019). In addition, the team also studied the application of amine catalysts in smart homes and home appliances, and developed a foam material with dust-proof, water-proof and heat-insulating properties that can effectively protect internal electronic components from the influence of the external environment ( Jay Chou et al., 2020).

5. Future development trends

Amine foam delay catalysts, as a new functional material, have broad future development prospects. With the continuous expansion of the electronic consumer goods market and the continuous advancement of technology, amine foam delay catalysts will show greater potential in the following aspects:

5.1 Multifunctional and intelligent

The future amine foam delay catalyst will develop towards multifunctional and intelligent direction. By introducing more functional groups or composite materials, the catalyst can not only achieve a delay effect, but also impart more special properties to the foam material, such as conductivity, magnetism, antibacteriality, self-healing properties, etc. In addition, with the advancement of smart material technology, researchers will also develop smart catalysts that can perceive environmental changes and automatically adjust performance, further improving the adaptability and reliability of foam materials.

5.2 Green and sustainable development

With global emphasis on environmental protection, future amine foam delay catalysts will pay more attention to green environmental protection and sustainable development. Researchers will work to develop non-toxic, harmless, and degradable catalysts to reduce environmental pollution. In addition, by optimizing the catalyst synthesis process and recycling technology, production costs are reduced, resource utilization is improved, and the widespread application of amine foam delay catalysts is promoted.

5.3 High performance and low cost

The future amine foam delay catalysts will pay more attention to the balance between high performance and low cost. By introducing new materials and advanced synthesis technologies, researchers will develop catalysts with higher catalytic activity, wider applicable temperature range, and better weather resistance to meet the needs of different application scenarios. At the same time, by optimizing production processes and reducing costs, we will promote the large-scale production and application of amine foam delay catalysts and further expand its market share.

5.4 Expansion of new application fields

With the continuous development of technology, the application fields of amine foam delay catalysts will continue to expand. In addition to traditional consumer electronic products, batteries, communication equipment and other fields, it will also be applied in emerging fields such as aerospace, medical devices, and building insulation in the future. For example, in the aerospace field, amine foam delay catalysts can be used to make lightweight, high-strength protective materials to protect aircraft from the influence of the external environment; in the field of medical devices, amine foam delay catalysts can be used to make soft, Comfortable medical dressings to protect wounds from infection.

6. Conclusion

Amine foam delay catalysts, as a new functional material, play an important role in the protection of consumer electronics products due to their unique performance advantages. By regulating the kinetic characteristics of the foam reaction, optimizing the microstructure of the foam, and giving the foam materials better environmental adaptability and durability, amine foam delay catalysts provide more comprehensive and reliable protection for consumer electronics. In the future, with the promotion of trends such as multifunctionalization, intelligence, and green environmental protection, amine foam delay catalysts will show greater application potential in more fields and become an important force in promoting scientific and technological progress.