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The innovative application prospect of polyurethane catalyst SMP in 3D printing materials: a technological leap from concept to reality

3月 8th, 2025 News

The innovative application prospects of polyurethane catalyst SMP in 3D printing materials: a technological leap from concept to reality

Introduction

Since its inception, 3D printing technology has shown great potential in many fields. From medical to aerospace, from construction to consumer goods, 3D printing is changing the way we make and design. However, with the continuous advancement of technology, the selection and performance of materials have become key factors that determine the scope of application of 3D printing. As a polymer material with shape memory function, the polyurethane catalyst SMP (Shape Memory Polyurethane) has attracted widespread attention in the field of 3D printing in recent years. This article will explore the innovative application prospects of SMP in 3D printing materials in depth, and a technological leap from concept to reality.

1. Basic concepts of polyurethane catalyst SMP

1.1 What is polyurethane catalyst SMP?

Polyurethane catalyst SMP is a polymer material with shape memory function. It is able to change shape under external stimuli (such as temperature, light, electricity, etc.) and return to its original shape after the stimuli disappears. This feature makes SMP have a wide range of application prospects in many fields, especially in the field of 3D printing.

1.2 Chemical structure of SMP

The chemical structure of SMP is mainly composed of hard and soft segments. The hard segments are usually composed of isocyanate and chain extenders, while the soft segments are composed of polyols. This structure makes SMP have excellent mechanical properties and shape memory functions.

1.3 SMP shape memory mechanism

SMP’s shape memory mechanism mainly depends on the conformational changes of its molecular chain. Under external stimulation, the molecular chains will be rearranged, resulting in changes in the shape of the material. When the stimulus disappears, the molecular chains return to their original conformation, thus allowing the material to return to its original shape.

2. Advantages of SMP in 3D printing

2.1 High-precision printing

SMP materials have excellent fluidity and plasticity, and can achieve high-precision printing during 3D printing. This is especially important for printing tasks that require complex structures and fine details.

2.2 Shape memory function

SMP’s shape memory function enables printed objects to change shape under external stimuli and return to their original shape after the stimuli disappears. This feature has a wide range of application prospects in the fields of medical care, aerospace, etc.

2.3 Excellent mechanical properties

SMP materials have excellent mechanical properties, including high strength, high toughness and good wear resistance. This allows printed objects to maintain stable performance in harsh environments.

2.4 Environmental protection

SMP materials have good degradability andEnvironmentally friendly and meet the needs of modern manufacturing for environmentally friendly materials.

3. Specific application of SMP in 3D printing

3.1 Medical field

3.1.1 Customized medical devices

SMP materials can be used to print customized medical devices such as stents, catheters, etc. These devices can change shape in the body according to temperature changes, thereby better adapting to the patient’s physiological structure.

3.1.2 Drug Release System

SMP materials can be used to print drug release systems to control drug release rates through temperature changes. This system can achieve accurate drug delivery and improve treatment effect.

3.2 Aerospace Field

3.2.1 Deformable structure

SMP materials can be used to print deformable structures such as wings, antennas, etc. These structures can change shapes during flight according to environmental changes, thereby improving flight efficiency and safety.

3.2.2 Lightweight components

SMP materials have excellent mechanical properties and lightweight properties, and can be used to print lightweight components in the aerospace field, such as engine blades, fuselage structures, etc.

3.3 Construction Field

3.3.1 Intelligent building materials

SMP materials can be used to print smart building materials, such as self-repair concrete, smart windows, etc. These materials are able to change performance under external stimulation, thereby improving the durability and comfort of the building.

3.3.2 Customized building components

SMP materials can be used to print customized building components, such as decorative panels, structural parts, etc. These components can achieve complex shapes and functions according to design requirements.

3.4 Consumer Products Field

3.4.1 Smart Home

SMP materials can be used to print smart home products, such as smart lamps, smart furniture, etc. These products can change shape and function according to user needs and improve the quality of life.

3.4.2 Personalized consumer goods

SMP materials can be used to print personalized consumer products, such as customized insoles, personalized accessories, etc. These products can be customized to achieve customized production according to users’ personalized needs.

IV. Technical challenges of SMP in 3D printing

4.1 Printing accuracy control

SMP materials need to accurately control printing parameters such as temperature, pressure, speed, etc. during 3D printing to ensure the implementation of printing accuracy and shape memory functions.

4.2 Material performance optimization

The performance of SMP materials needs to be optimized according to specific application scenarios, such as improving mechanical properties, improving shape memory functions, etc..

4.3 Printing device compatibility

SMP materials need to be compatible with existing 3D printing equipment to ensure the stability and reliability of the printing process.

4.4 Cost Control

SMP materials are costly and require large-scale production and process optimization to reduce costs to promote their widespread use in 3D printing.

5. The future development direction of SMP in 3D printing

5.1 Multifunctional

In the future, SMP materials will not only have shape memory functions, but also have other functions, such as self-healing, conductivity, thermal conductivity, etc., so as to meet the needs of more application scenarios.

5.2 Intelligent

SMP materials will be combined with intelligent technology to achieve intelligent control and application. For example, automatic deformation and functional switching of SMP materials are achieved through sensors and control systems.

5.3 Greening

In the future, SMP materials will pay more attention to environmental protection and sustainable development, and use degradable and recyclable raw materials to reduce the impact on the environment.

5.4 Large-scale production

With the advancement of technology and the reduction of costs, SMP materials will be produced at scale, thus promoting their widespread use in 3D printing.

VI. Product parameters of SMP in 3D printing

6.1 Basic parameters of SMP materials

parameter name parameter value
Density 1.1-1.3 g/cm³
Melting point 150-200°C
Tension Strength 30-50 MPa
Elongation of Break 300-500%
Shape recovery rate 95-100%
Shape recovery temperature 40-60°C

6.2 3D printing parameters of SMP materials

parameter name parameter value
Print temperature 180-220°C
Print speed 50-100 mm/s
Layer Thickness 0.1-0.3 mm
Fill Density 20-100%
Cooldown 10-30 s

6.3 Application parameters of SMP materials

Application Fields Application Parameters
Medical Shape recovery temperature: 37°C
Aerospace Shape recovery temperature: 80°C
Architecture Shape recovery temperature: 50°C
Consumer Products Shape recovery temperature: 40°C

7. Conclusion

As a polymer material with shape memory function, the polyurethane catalyst SMP has wide application prospects in the field of 3D printing. Through high-precision printing, shape memory function, excellent mechanical properties and environmental protection, SMP materials are promoting the innovation and development of 3D printing technology. Although challenges are still facing in terms of printing accuracy control, material performance optimization, equipment compatibility and cost control, with the continuous advancement of technology, SMP materials will achieve more innovative applications in the fields of medical care, aerospace, construction and consumer goods. In the future, SMP materials will develop towards multifunctional, intelligent, green and large-scale production, bringing more possibilities to 3D printing technology.

Through the discussion in this article, we can see that SMP materials have broad application prospects in 3D printing, and the technological leap from concept to reality is gradually being realized. With the continuous advancement of technology and the continuous expansion of applications, SMP materials will play an increasingly important role in the future 3D printing field.

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The key role of delayed amine hard bubble catalyst in the production of high-performance polyurethane hard bubbles: improving foam stability and processing time

3月 8th, 2025 News

The key role of delayed amine hard bubble catalyst in the production of high-performance polyurethane hard bubbles: improving foam stability and processing time

Introduction

Polyurethane hard bubbles are a high-performance material widely used in the fields of construction, cold chain, automobile, home appliances, etc. Its excellent thermal insulation properties, mechanical strength and lightweight properties make it one of the indispensable materials in modern industry. However, the production process of polyurethane hard bubbles involves a variety of chemical reactions and physical changes, where the selection and use of catalysts have a critical impact on the performance of the final product. As a new catalyst, the delayed amine hard bubble catalyst has been widely used in the production of high-performance polyurethane hard bubbles in recent years. This article will discuss in detail the key role of delayed amine hard bubble catalyst in the production of polyurethane hard bubbles, especially its advantages in improving foam stability and processing time.

1. Basic principles of polyurethane hard foam

1.1 Chemical composition of polyurethane hard bubbles

Polyurethane hard foam is mainly composed of polyols, isocyanates, foaming agents, catalysts and surfactants. Among them, polyols and isocyanate are the main reactants, forming a polyurethane matrix through polymerization; foaming agents are used to generate bubbles and form foam structures; catalysts are used to regulate the reaction rate; surfactants are used to stabilize the foam structure.

1.2 The formation process of polyurethane hard bubbles

The formation process of polyurethane hard bubbles mainly includes the following steps:

  1. Mix: Mix raw materials such as polyols, isocyanates, foaming agents, catalysts and surfactants in a certain proportion.
  2. Foaming: Under the action of a catalyst, the polyol and isocyanate undergo polymerization reaction, and the foaming agent produces gas to form bubbles.
  3. Gelation: As the reaction progresses, the polyurethane matrix gradually solidifies to form a stable foam structure.
  4. Mature: The foam structure is further cured to achieve final performance.

2. The role of catalysts in the production of polyurethane hard bubbles

2.1 Types of catalysts

The commonly used catalysts in the production of polyurethane hard bubbles mainly include the following categories:

  1. Amine catalysts: such as triethylamine, dimethylamine, etc., which are mainly used to promote the polymerization of polyols and isocyanates.
  2. Metal catalysts: such as organic tin, organic lead, etc., which are mainly used to promote the reaction between isocyanate and water and produce carbon dioxide gas.
  3. Retardant amine catalyst: A new catalyst with the characteristics of delayed reaction and can regulate the reaction rate under specific conditions.

2.2 Mechanism of action of catalyst

The role of catalysts in the production of polyurethane hard bubbles is mainly reflected in the following aspects:

  1. Controlling the reaction rate: The catalyst can accelerate or slow down the polymerization of polyols and isocyanates, thereby regulating the foam formation process.
  2. Stable foam structure: Catalysts can promote the stability of foam structure and prevent bubbles from bursting or collapse.
  3. Optimize processing time: By regulating the reaction rate, the catalyst can optimize processing time and improve production efficiency.

3. Characteristics and advantages of delayed amine hard bubble catalyst

3.1 Characteristics of delayed amine hard bubble catalyst

The delayed amine hard bubble catalyst is a new type of catalyst with the following characteristics:

  1. Delayed reaction: Can delay reaction under specific conditions, thereby extending processing time.
  2. High-efficiency Catalysis: It can efficiently catalyze the polymerization reaction of polyols and isocyanates under specific conditions.
  3. Good stability: Can stabilize the foam structure and prevent bubbles from bursting or collapse.

3.2 Advantages of delayed amine hard bubble catalyst

The delayed amine hard bubble catalyst has the following advantages in the production of high-performance polyurethane hard bubbles:

  1. Improve foam stability: By delaying the reaction, the foam formation process can be better controlled and the foam stability can be improved.
  2. Optimize processing time: By regulating the reaction rate, the processing time can be optimized and production efficiency can be improved.
  3. Improving product performance: Can improve the mechanical properties, thermal insulation properties and durability of polyurethane hard foam.

IV. Application of delayed amine hard bubble catalyst in the production of high-performance polyurethane hard bubbles

4.1 Improve foam stability

Foam stability is a key indicator in the production of polyurethane hard foam. Poor foam stability can cause bubbles to burst or collapse, affecting the performance of the final product. The delayed amine hard bubble catalyst can better control the foam formation process and improve the stability of the foam.

4.1.1 The role of delayed reaction

ExtendedThe delay reaction can prolong the foam formation time and allow enough time for bubbles to grow and stabilize. By regulating the reaction rate, the delayed amine hard bubble catalyst can prevent premature bursting or collapse of the bubble, thereby improving the stability of the bubble.

4.1.2 Practical application cases

In actual production, polyurethane hard bubble products using delayed amine hard bubble catalysts have better foam stability. For example, in building insulation materials, polyurethane hard bubbles using delayed amine hard bubble catalysts have a more uniform bubble structure and higher thermal insulation properties.

4.2 Optimized processing time

Processing time is an important parameter in the production of polyurethane hard bubbles. Too long processing time will lead to low production efficiency, and too short processing time will affect product quality. By regulating the reaction rate, the delayed amine hard bubble catalyst can optimize processing time and improve production efficiency.

4.2.1 The role of regulating reaction rate

The delayed amine hard bubble catalyst can delay the reaction under certain conditions, thereby extending processing time. By regulating the reaction rate, the delayed amine hard bubble catalyst can make the foam formation process more controllable, thereby improving production efficiency.

4.2.2 Practical application cases

In actual production, polyurethane hard bubble products using delayed amine hard bubble catalysts have a more optimized processing time. For example, in cold chain insulation materials, polyurethane hard bubbles using delayed amine hard bubble catalysts have a shorter processing time, thereby improving production efficiency.

4.3 Improve product performance

The delayed amine hard bubble catalyst can not only improve foam stability and optimize processing time, but also improve the mechanical properties, thermal insulation properties and durability of polyurethane hard bubbles.

4.3.1 Improvement of mechanical properties

The delayed amine hard bubble catalyst can promote uniform curing of the polyurethane matrix, thereby improving the mechanical properties of the polyurethane hard bubble. For example, polyurethane hard bubbles using delayed amine hard bubble catalysts have higher compressive strength and tensile strength.

4.3.2 Improvement of thermal insulation performance

The retarded amine hard bubble catalyst can stabilize the foam structure, thereby improving the thermal insulation performance of polyurethane hard bubbles. For example, polyurethane hard bubbles using retardant amine hard bubble catalysts have lower thermal conductivity, thereby improving thermal insulation properties.

4.3.3 Improved durability

The delayed amine hard bubble catalyst can promote uniform curing of the polyurethane matrix, thereby improving the durability of the polyurethane hard bubble. For example, polyurethane hard bubbles using delayed amine hard bubble catalysts have better aging resistance and weather resistance.

V. Product parameters of delayed amine hard bubble catalyst

5.1 Product Parameters

parameter name parameter value Instructions
Catalytic Type Retardant amine catalyst It has the characteristics of delayed reaction
Reaction delay time 5-10 minutes Time to delay reaction under specific conditions
Catalytic Efficiency Efficient Can efficiently catalyze the polymerization reaction of polyols and isocyanates
Stability OK Can stabilize the foam structure and prevent bubbles from bursting or collapse
Applicable temperature range 20-40? Have good catalytic effect in the range of 20-40?
Applicable pH range 6-8 Give good catalytic effect in pH 6-8 range
Storage Conditions Cool and dry place Avoid direct sunlight and high temperatures
Shelf life 12 months Storage in a cool and dry place, with a shelf life of 12 months

5.2 Product Parameter Analysis

The product parameters of the delayed amine hard bubble catalyst show that it has the characteristics of delayed reaction, efficient catalysis, and good stability. In practical applications, the delayed amine hard bubble catalyst can delay the reaction under specific conditions, thereby improving foam stability and optimizing processing time. At the same time, the retarded amine hard bubble catalyst has a wide applicable temperature and pH range, and can maintain a stable catalytic effect under different production conditions.

VI. Methods for using delayed amine hard bubble catalyst

6.1 How to use

The method of using delayed amine hard bubble catalyst mainly includes the following steps:

  1. Raw material preparation: Prepare raw materials such as polyols, isocyanates, foaming agents, surfactants and other raw materials in a certain proportion.
  2. Catalytic Addition: Add the delayed amine hard bubble catalyst to the polyol in a certain proportion and stir evenly.
  3. Mixing reaction: Mix the mixed polyol and isocyanate in a certain proportion to start the reaction.
  4. SendBubble molding: During the reaction, the foaming agent produces gas, forming bubbles, and finally forming polyurethane hard bubbles.

6.2 Precautions for use

When using delayed amine hard bubble catalyst, the following points should be paid attention to:

  1. Catalytic Addition Load: The amount of catalyst added should be adjusted according to the specific production conditions. Too much or too little will affect the reaction effect.
  2. Mix evenly: The catalyst should be mixed well with the polyol to ensure the catalytic effect.
  3. Reaction Condition Control: Conditions such as reaction temperature, pH value should be controlled within the scope of application to ensure catalytic effect.

7. Future development trends of delayed amine hard bubble catalysts

7.1 Environmentally friendly catalyst

With the increase in environmental protection requirements, the delayed amine hard bubble catalyst will develop towards the environmental protection direction in the future. Environmentally friendly catalysts have the characteristics of low toxicity, low volatility, and easy degradation, which can reduce environmental pollution.

7.2 High-efficiency catalyst

In the future, delayed amine hard bubble catalysts will develop towards high efficiency. High-efficiency catalysts have higher catalytic efficiency and longer service life, which can improve production efficiency and reduce production costs.

7.3 Multifunctional catalyst

In the future, delayed amine hard bubble catalysts will develop towards a multifunctional direction. Multifunctional catalysts not only have catalytic effects, but also have various functions such as stabilizing foam and improving product performance, which can meet different production needs.

Conclusion

The delayed amine hard bubble catalyst plays a key role in the production of high-performance polyurethane hard bubbles, especially in improving foam stability and optimizing processing time. By delaying the reaction, the delayed amine-hard bubble catalyst can better control the foam formation process and improve the stability of the foam; by adjusting the reaction rate, the delayed amine-hard bubble catalyst can optimize the processing time and improve production efficiency. In the future, with the improvement of environmental protection requirements and the advancement of technology, delayed amine hard bubble catalysts will develop towards environmentally friendly, efficient and multifunctional, providing better and more efficient solutions for the production of polyurethane hard bubbles.

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How to optimize the hard bubble production process using delayed amine hard bubble catalyst: from raw material selection to finished product inspection

3月 8th, 2025 News

How to use delayed amine hard bubble catalyst to optimize hard bubble production process: from raw material selection to finished product inspection

Catalog

  1. Introduction
  2. Overview of hard bubble production process
  3. Properties of delayed amine hard bubble catalyst
  4. Raw Material Selection
  5. Production process optimization
  6. Finished product inspection
  7. Conclusion

1. Introduction

Rough polyurethane foam (referred to as hard foam) is widely used in construction, cold chain, automobile and home appliances due to its excellent thermal insulation performance, mechanical strength and lightweight properties. However, the production process of hard bubbles is complex and involves a variety of raw materials and reaction conditions, where the selection and use of catalysts have a crucial impact on product quality and production efficiency. As a new catalyst, the retardant amine hard bubble catalyst can significantly optimize the hard bubble production process due to its unique retardant reaction characteristics. This article will introduce in detail how to use delayed amine hard bubble catalysts to optimize the hard bubble production process from raw material selection to finished product inspection.

2. Overview of hard bubble production process

The production process of hard bubbles mainly includes the following steps:

  1. Raw material preparation: including polyols, isocyanates, catalysts, foaming agents, stabilizers, etc.
  2. Mix: Mix polyols, catalysts, foaming agents, stabilizers, etc. evenly.
  3. Reaction: React the mixed raw materials with isocyanate to form a foam.
  4. Mature: The foam is matured in the mold to form the final product.
  5. Finished product inspection: Inspection of the finished product in terms of physical properties, chemical properties, etc.

3. Characteristics of delayed amine hard bubble catalyst

The delayed amine hard bubble catalyst is a new type of catalyst with the following characteristics:

  • Delayed reaction: Can delay the start time of the reaction and allow the raw materials to have a more sufficient mixing time.
  • High-efficiency Catalysis: After the reaction begins, the reaction can be quickly catalyzed and the maturation time can be shortened.
  • Good stability: Good stability during storage and use, and is not easy to decompose.
  • Environmental: Low volatile organic compounds (VOC) emissions, meeting environmental protection requirements.

3.1 Parameters of delayed amine hard bubble catalyst

parameter name parameter value Instructions
Appearance Colorless transparent liquid No impurities, high transparency
Density (g/cm³) 1.05-1.10 Moderate density, easy to mix
Viscosity (mPa·s) 50-100 Moderate viscosity, easy to flow
Flash point (?) >100 High flash point, high security
Storage Stability >12 months Long-term storage does not deteriorate
Reaction delay time 10-30 seconds Delay reaction time for easy mixing
Mature Time 2-5 minutes Rapid maturation to improve production efficiency

4. Raw material selection

The selection of raw materials has a direct impact on the quality and performance of hard bubbles. The following are the key points for selecting main raw materials:

4.1 Polyol

Polyols are one of the main raw materials for hard foaming, and the following factors should be considered in their choice:

  • Molecular weight: Molecular weight affects the hardness and elasticity of the foam.
  • Functionality: Functionality affects the cross-linking density and mechanical strength of the foam.
  • Viscosity: Viscosity affects mixing and flow properties.

4.2 Isocyanate

Isocyanate is another main raw material for hard foaming, and the following factors should be considered in the selection:

  • NCO content: NCO content affects reaction speed and foam density.
  • Viscosity: Viscosity affects mixing and flow properties.
  • Reactive activity: Reactive activity affects the aging of foambetween.

4.3 Foaming agent

The following factors should be considered in the selection of foaming agents:

  • Foaming efficiency: Foaming efficiency affects the density and thermal insulation properties of the foam.
  • Environmentality: Choose a foaming agent with low GWP (global warming potential) to meet environmental protection requirements.
  • Stability: The foaming agent has good stability during storage and use.

4.4 Stabilizer

The following factors should be considered in the selection of stabilizers:

  • Foam Stability: Stabilizers can prevent foam from collapsing and shrinking.
  • Compatibility: The stabilizer has good compatibility with other raw materials and does not affect the reaction.

4.5 Catalyst

The following factors should be considered in the selection of catalysts:

  • Reaction delay time: Delay reaction time facilitates raw material mixing.
  • Catalytic Efficiency: High catalytic efficiency and shorten maturation time.
  • Stability: The catalyst has good stability during storage and use.

5. Production process optimization

Using delayed amine hard bubble catalyst to optimize the hard bubble production process, mainly including the following steps:

5.1 Raw material mixing

Raw material mixing is a key step in hard bubble production. The delayed reaction characteristics of the amine hard bubble catalyst allow the raw materials to have a more sufficient mixing time to ensure uniform mixing.

5.1.1 Hybrid Equipment

Select efficient mixing equipment, such as high-pressure foaming machines, to ensure that the raw materials are mixed evenly.

5.1.2 Mixing time

According to the delayed reaction time of the delayed amine hard bubble catalyst, adjust the mixing time to ensure that the raw materials are fully mixed.

5.2 Reaction control

Reaction control is the core step in hard bubble production. Retarding the efficient catalytic properties of amine hard bubble catalysts can shorten the maturation time and improve production efficiency.

5.2.1 Reaction temperature

Control the reaction temperature within the appropriate range, usually 20-40°C to ensure smooth progress of the reaction.

5.2.2 Reaction pressure

Control the reaction pressure within the appropriate range, usually 0.1-0.3MPa, to ensure uniform foaming of the foam.

5.3 Cultivation process

The maturation process is the latter step in hard bubble production. The rapid maturation characteristics of delayed amine hard bubble catalyst can shorten the maturation time and improve production efficiency.

5.3.1 Craving temperature

Control the maturation temperature within the appropriate range, usually 40-60°C to ensure that the foam is fully matured.

5.3.2 Crafting time

According to the maturation time of the delayed amine hard bubble catalyst, adjust the maturation time to ensure that the foam is fully matured.

5.4 Process parameter optimization

Through experimental and data analysis, process parameters are optimized, production efficiency and product quality are improved.

5.4.1 Experimental Design

Design orthogonal experiments to examine the impact of different process parameters on product quality.

5.4.2 Data Analysis

Through data analysis, the best process parameters are determined, such as mixing time, reaction temperature, maturation time, etc.

6. Finished product inspection

Finished product inspection is the next step in hard bubble production to ensure that the product quality meets the requirements. The following are the main items for finished product inspection:

6.1 Physical performance inspection

6.1.1 Density

Density is an important physical performance indicator of hard bubbles, affecting the thermal insulation performance and mechanical strength of the foam.

Density range (kg/m³) Instructions
30-50 Low-density foam, suitable for lightweight thermal insulation materials
50-80 Medium density foam, suitable for general thermal insulation materials
80-120 High-density foam, suitable for high-strength thermal insulation materials

6.1.2 Compression Strength

Compression strength is an important mechanical performance indicator of hard bubbles, affecting the bearing capacity of the foam.

Compression Strength Range (kPa) Instructions
100-200 Low compression strength, suitable for lightweight thermal insulation materials
200-400 Medium compression strength, suitable for general thermal insulation materials
400-600 High compression strength, suitable for high-strength thermal insulation materials

6.1.3 Thermal conductivity

Thermal conductivity is an important thermal insulation indicator for hard bubbles, affecting the thermal insulation effect of foam.

Thermal conductivity range (W/m·K) Instructions
0.020-0.025 Low thermal conductivity, suitable for high-efficiency thermal insulation materials
0.025-0.030 The thermal conductivity in the medium, suitable for general heat insulation materials
0.030-0.035 High thermal conductivity, suitable for ordinary thermal insulation materials

6.2 Chemical performance inspection

6.2.1 Chemical resistance

Chemical resistance is an important chemical performance indicator for hard bubbles and affects the service life of the bubbles.

Chemical resistance level Instructions
Outstanding Good acid and alkali resistance and solvent resistance
Good Good acid and alkali resistance and solvent resistance
in Acoustic alkali and solvent resistance are generally
Poor Poor acid and alkali resistance and solvent resistance

6.2.2 Aging resistance

Aging resistance is an important chemical performance indicator for hard bubbles, which affects the service life of the bubbles.

Aging resistance level Instructions
Outstanding Good resistance to ultraviolet rays and humidity and heat resistance
Good Good resistance to ultraviolet rays and humidity and heat resistance
in Ultraviolet resistance and humidity resistance are average
Poor Purple-resistantPoor external and heat resistance

6.3 Appearance inspection

Appearance inspection is an important step in hard bubble production to ensure that the product appearance meets the requirements.

6.3.1 Surface flatness

Surface flatness is an important appearance indicator for hard bubbles and affects the appearance quality of the product.

Surface flatness level Instructions
Outstanding The surface is flat, without any unevenness
Good The surface is flat, slightly uneven
in The surface is uneven and obviously uneven
Poor The surface is seriously uneven and has obvious unevenness

6.3.2 Color uniformity

Color uniformity is an important appearance indicator for hard bubbles and affects the appearance quality of the product.

Color uniformity level Instructions
Outstanding Even color, no color difference
Good The color is relatively uniform, with a slight color difference
in The color is uneven, and the color difference is obvious
Poor The color is seriously uneven and the color difference is obvious

7. Conclusion

Using delayed amine hard bubble catalyst to optimize the hard bubble production process can significantly improve production efficiency and product quality. By rationally selecting raw materials, optimizing production processes and strict finished product inspection, high-performance rigid polyurethane foam can be produced to meet the needs of different application fields. The delayed reaction characteristics and efficient catalytic properties of the delayed amine hard bubble catalyst make it an ideal choice for hard bubble production. In the future, with the continuous advancement of technology, delayed amine hard bubble catalysts will play a greater role in hard bubble production and promote the development of the hard bubble industry.

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