The role of delayed low-odor amine catalyst LED-204 in improving the softness and comfort of polyurethane elastomers

Date：2025-03-12 Categories：Our Projects

The role of delayed low odor amine catalyst LED-204 in improving the softness and comfort of polyurethane elastomers

1. Introduction

Polyurethane elastomer is a high-performance material widely used in automobiles, furniture, shoe materials, medical equipment and other fields. Its excellent mechanical properties, wear resistance and chemical resistance make it the preferred material in many industries. However, as consumers’ requirements for product comfort and environmental performance continue to increase, traditional polyurethane elastomers can no longer meet market demand in some aspects. Especially in terms of softness and comfort, traditional polyurethane elastomers often have certain limitations.

To improve the softness and comfort of polyurethane elastomers, researchers have developed a variety of novel catalysts and additives. Among them, the delayed low-odor amine catalyst LED-204 has attracted much attention due to its unique performance. This article will introduce in detail the role of LED-204 in improving the softness and comfort of polyurethane elastomers, and demonstrate its performance advantages through product parameters and tables.

2. Basic characteristics of polyurethane elastomers

2.1 Structure of polyurethane elastomer

Polyurethane elastomers are polymer materials produced by chemical reactions of polyols, isocyanates and chain extenders. Its molecular chain contains a large number of carbamate groups (-NH-CO-O-), which impart excellent mechanical properties and chemical stability to the polyurethane elastomer.

2.2 Properties of polyurethane elastomers

Polyurethane elastomers have the following main properties:

High elasticity: Polyurethane elastomers have excellent elastic recovery properties and can quickly return to their original state after being affected by external forces.
Abrasion Resistance: The wear resistance of polyurethane elastomers is better than many other materials and is suitable for high wear environments.
Chemical resistance: Polyurethane elastomers have good tolerance to a variety of chemical substances and are suitable for chemical equipment and other fields.
Softness: The softness of polyurethane elastomers can be adjusted by adjusting the formula and process, but traditional formulas have certain limitations in softness.

3. Overview of the delayed low-odor amine catalyst LED-204

3.1 Basic characteristics of LED-204

LED-204 is a novel delayed low odor amine catalyst specially designed to improve the softness and comfort of polyurethane elastomers. Its main characteristics include:

Delayed Catalysis: LED-204 has a delayed catalytic effect and canThe polyurethane reaction provides longer operating time to facilitate the molding of complex-shaped products.
Low Odor: The odor produced by LED-204 during the reaction process is extremely low, meets environmental protection requirements, and is suitable for odor-sensitive application scenarios.
High-efficiency Catalysis: LED-204 can significantly improve the efficiency of polyurethane reaction, shorten the production cycle, and reduce energy consumption.

3.2 Chemical structure of LED-204

The chemical structure of LED-204 has been carefully designed to show excellent catalytic properties in the polyurethane reaction. Its molecular structure contains specific amine groups that can react with isocyanate to promote the growth and cross-linking of polyurethane chains.

4. The role of LED-204 in improving the softness of polyurethane elastomers

4.1 Definition of softness

Softness refers to the softness of the material when it is subjected to external forces. For polyurethane elastomers, softness directly affects their comfort and performance. Polyurethane elastomers with high softness can better adapt to the human body curves and provide a more comfortable touch.

4.2 Effect of LED-204 on softness

LED-204 improves the softness of polyurethane elastomers through the following mechanisms:

Compliance of Molecular Chain: LED-204 can promote the flexibility of the polyurethane molecular chain, making it more likely to deform when it is subjected to external forces, thereby improving softness.
Control crosslink density: LED-204 can accurately regulate the crosslink density of polyurethane elastomers, so that it has higher softness while maintaining mechanical strength.
Optimization of micro-phase separation: LED-204 can optimize the micro-phase separation structure in polyurethane elastomers, making its soft and hard segments more uniformly distributed, thereby improving overall softness.

4.3 Experimental data

Through comparative experiments, the polyurethane elastomer using LED-204 showed significant advantages in softness. The following is a comparison table of experimental data:

Catalytic Type	Softness (Shore A)	Operation time (minutes)	Odor level
Traditional catalyst	60	5	High
LED-204	45	10	Low

As can be seen from the table, the polyurethane elastomer using LED-204 is significantly better than traditional catalysts in terms of softness, while operating for longer and having a lower odor.

5. The role of LED-204 in improving the comfort of polyurethane elastomers

5.1 Definition of comfort

Comfort refers to the comfort feeling provided by the material to the user during use. For polyurethane elastomers, comfort is mainly reflected in touch, breathability and temperature adjustment.

5.2 Effect of LED-204 on comfort

LED-204 improves the comfort of polyurethane elastomers through the following mechanisms:

Enhanced Touch: LED-204 can make the surface of polyurethane elastomer smoother and more delicate, providing a more comfortable touch.
Improving Breathability: LED-204 can optimize the microporous structure of polyurethane elastomers to have better breathability, thereby improving the comfort of use.
Optimization of temperature regulation: LED-204 can make polyurethane elastomers have better temperature regulation performance, keeping them cool in high temperature environments and warm in low temperature environments.

5.3 Experimental data

By comparative experiments, polyurethane elastomers using LED-204 showed significant advantages in terms of comfort. The following is a comparison table of experimental data:

Catalytic Type	Touch Score (1-10)	Breathability (g/m²·24h)	Temperature regulation performance (℃)
Traditional catalyst	6	500	2
LED-204	9	800	5

As can be seen from the table, the polyurethane elastomer using LED-204 is superior to traditional catalysts in terms of touch, breathability and temperature regulation performance.

6. LED-204Product parameters

6.1 Physical parameters

The following are the main physical parameters of LED-204:

parameter name	value
Appearance	Colorless transparent liquid
Density (g/cm³)	1.05
Viscosity (mPa·s)	50
Flash point (℃)	120
Boiling point (℃)	250

6.2 Chemical Parameters

The following are the main chemical parameters of LED-204:

parameter name	value
Amine value (mg KOH/g)	300
pH value	9.5
Water-soluble	Full dissolve
Stability	Good

6.3 Application parameters

The following are the main application parameters of LED-204:

parameter name	value
Recommended dosage (%)	0.5-1.5
Operating temperature (℃)	20-40
Applicable System	Polyurethane elastomer
Storage Conditions	Cool and dry place

7. Application cases of LED-204

7.1 Car seat

In car seat manufacturing, use LED-204The polyurethane elastomer can significantly improve the softness and comfort of the seat, providing passengers with a more comfortable riding experience. At the same time, the low odor characteristics of LED-204 also meet the environmental protection requirements of the car interior.

7.2 Furniture

In furniture manufacturing, the use of LED-204’s polyurethane elastomer can make sofas, mattresses and other furniture softer and more comfortable, improving the user experience. In addition, the delayed catalytic action of LED-204 also facilitates the formation of complex-shaped furniture.

7.3 Shoe material

In shoe material manufacturing, the use of polyurethane elastomer of LED-204 can make the sole softer and provide better cushioning, thereby improving wear comfort. At the same time, the low odor characteristics of LED-204 also meet the environmental protection requirements of shoe materials.

8. Conclusion

The delayed low odor amine catalyst LED-204 shows significant advantages in improving the softness and comfort of polyurethane elastomers. Through characteristics such as delayed catalysis, low odor and high efficiency catalysis, LED-204 can significantly improve the softness and comfort of polyurethane elastomers while meeting environmental protection requirements. Experimental data and product parameters show that LED-204 has broad application prospects in multiple application fields.

Through the introduction of this article, I believe readers have a deeper understanding of the role of LED-204 in improving the softness and comfort of polyurethane elastomers. In the future, with the continuous advancement of technology, LED-204 is expected to give full play to its unique advantages in more fields and inject new vitality into the development of polyurethane elastomers.

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