The use of the thermosensitive catalyst SA-1 in special-purpose polyurethane products

Date：2025-03-11 Categories：News

Application of thermal-sensitive catalyst SA-1 in special-purpose polyurethane products

1. Introduction

Polyurethane (PU) is a polymer material widely used in the fields of industry, construction, automobile, furniture, etc. Its excellent physical properties and chemical stability make it the preferred material for many special purpose products. However, the performance of polyurethane products depends to a large extent on the catalyst used in their production process. As a new catalyst, the thermosensitive catalyst SA-1 has been widely used in special-purpose polyurethane products due to its unique properties. This article will introduce in detail the characteristics, applications of the thermosensitive catalyst SA-1 and its specific use methods in special-purpose polyurethane products.

2. Overview of thermal-sensitive catalyst SA-1

2.1 Product Introduction

Thermal-sensitive catalyst SA-1 is a highly efficient catalyst designed for polyurethane products. It has thermally sensitive properties and can be activated at specific temperatures to accurately control the progress of the polyurethane reaction. This catalyst is suitable for a variety of polyurethane systems, including rigid foams, soft foams, elastomers, coatings, adhesives, etc.

2.2 Product parameters

parameter name	parameter value
Appearance	Colorless to light yellow liquid
Density (25°C)	1.05 g/cm³
Viscosity (25°C)	50-100 mPa·s
Flashpoint	>100°C
Solution	Easy soluble in alcohols, esters, and ketone solvents
Active temperature range	50-120°C
Storage temperature	5-35°C
Shelf life	12 months

2.3 Product Features

Thermal-sensitive characteristics: SA-1 is less active at low temperatures. As the temperature increases, the catalytic activity gradually increases, and the reaction speed can be accurately controlled at a specific temperature.
High-efficiency catalysis: SA-1 has efficient catalytic properties, can significantly shorten the curing time of polyurethane products and improve production efficiency.
Good stability: SA-1 has good stability during storage and use, and is not easy to decompose or fail.
Environmentality: SA-1 does not contain heavy metals and harmful substances, and meets environmental protection requirements.

3. Application of thermal-sensitive catalyst SA-1 in special-purpose polyurethane products

3.1 Rigid polyurethane foam

Rough polyurethane foam is widely used in building insulation, refrigeration equipment, pipeline insulation and other fields. The application of SA-1 in rigid foam is mainly reflected in the following aspects:

Precise control of foaming process: The thermally sensitive properties of SA-1 enable it to be activated at specific temperatures, thereby accurately controlling the foaming process and avoiding excessive expansion or contraction of foam.
Improve the uniformity of foam density: SA-1 can be evenly distributed throughout the foam system, ensuring uniform foam density and improving the insulation performance of the product.
Shorten curing time: The efficient catalytic performance of SA-1 can significantly shorten the curing time of rigid foam and improve production efficiency.

3.2 Soft polyurethane foam

Soft polyurethane foam is widely used in furniture, car seats, mattresses and other fields. The application of SA-1 in soft foam is mainly reflected in the following aspects:

Improving foam elasticity: SA-1 can effectively adjust the cross-linking density of soft foams and improve the elasticity and resilience of foams.
Improving the foam porosity: SA-1 can promote the formation of the open-cell structure of the foam and improve the breathability and comfort of the foam.
Shorten the release time: The efficient catalytic performance of SA-1 can significantly shorten the release time of soft foam and improve production efficiency.

3.3 Polyurethane elastomer

Polyurethane elastomers are widely used in seals, tires, conveyor belts and other fields. The application of SA-1 in elastomers is mainly reflected in the following aspects:

Improving the strength of elastomers: SA-1 can effectively promote the cross-linking reaction of elastomers and improve the tensile strength and tear strength of elastomers.
Improving the wear resistance of elastomers: SA-1 energyIt can adjust the molecular structure of the elastomer and improve the wear resistance and aging resistance of the elastomer.
Shortening vulcanization time: The efficient catalytic performance of SA-1 can significantly shorten the vulcanization time of the elastomer and improve production efficiency.

3.4 Polyurethane coating

Polyurethane coatings are widely used in construction, automobiles, ships and other fields. The application of SA-1 in coatings is mainly reflected in the following aspects:

Improving the adhesion of the coating: SA-1 can effectively promote the adhesion between the coating and the substrate, and improve the adhesion and durability of the coating.
Improving coating leveling: SA-1 can adjust the rheological properties of the coating and improve the leveling and surface gloss of the coating.
Shorten drying time: The efficient catalytic performance of SA-1 can significantly shorten the drying time of the paint and improve construction efficiency.

3.5 Polyurethane Adhesive

Polyurethane adhesives are widely used in packaging, wood, textile and other fields. The application of SA-1 in adhesives is mainly reflected in the following aspects:

Improve the adhesive strength: SA-1 can effectively promote the cross-linking reaction of adhesives and improve the adhesive strength and durability.
Improve the water resistance of the adhesive: SA-1 can adjust the molecular structure of the adhesive and improve the water resistance and weather resistance of the adhesive.
Shorten curing time: The efficient catalytic performance of SA-1 can significantly shorten the curing time of the adhesive and improve production efficiency.

4. How to use the thermosensitive catalyst SA-1

4.1 Addition amount

The amount of SA-1 added should be adjusted according to the specific application and the different polyurethane systems. Generally, the amount of SA-1 added is 0.1% to 1.0% of the total weight of the polyurethane system. For specific additions, please refer to the following table:

Application Fields	Additional amount (%)
Rough polyurethane foam	0.2-0.5
Soft polyurethane foam	0.1-0.3
Polyurethane elastomer	0.3-0.8
Polyurethane coating	0.1-0.4
Polyurethane Adhesive	0.2-0.6

4.2 Adding method

SA-1 can be added to the polyurethane system by:

Premix method: Premix SA-1 and polyol components in advance, and then mix with the isocyanate components.
Post-mixing method: During the mixing process of the polyurethane system, SA-1 is directly added to the mixing system.

4.3 Temperature control

The thermally sensitive characteristics of SA-1 require strict temperature control during use. Generally, the active temperature range of SA-1 is 50-120°C. For specific temperature control, please refer to the following table:

Application Fields	Active temperature range (°C)
Rough polyurethane foam	60-100
Soft polyurethane foam	50-90
Polyurethane elastomer	70-120
Polyurethane coating	50-80
Polyurethane Adhesive	60-100

5. Advantages and limitations of the thermosensitive catalyst SA-1

5.1 Advantages

Precisely control the reaction speed: The thermally sensitive properties of SA-1 enable it to be activated at a specific temperature, thereby accurately controlling the progress of the polyurethane reaction and avoiding too fast or too slow reactions.
Improving Production Efficiency: The efficient catalytic performance of SA-1 can significantly shorten the curing time of polyurethane products and improve production efficiency.
Improving product performance: SA-1 can effectively regulate the molecular structure of polyurethane products and improve the physical properties and chemical stability of the products.
Environmentality: SA-1It does not contain heavy metals and harmful substances, and meets environmental protection requirements.

5.2 Limitations

Temperature Sensitivity: The thermally sensitive characteristics of SA-1 require strict control of temperature during use, otherwise it may affect the catalytic effect.
Additional Quantity Control: The amount of SA-1 needs to be adjusted according to the specific application and the polyurethane system. Too much or too little amount of added amount may affect the performance of the product.
Storage Conditions: SA-1 needs to be stored at a temperature of 5-35°C to avoid high or low temperature environments.

6. Conclusion

As a new catalyst, thermistor SA-1 has wide application prospects in special-purpose polyurethane products. Its thermally sensitive properties, efficient catalytic properties and environmental protection make it an ideal choice for polyurethane products production. By reasonably controlling the addition amount and temperature, SA-1 can significantly improve the production efficiency and quality of polyurethane products and meet the needs of different application fields. However, the temperature sensitivity and amount control of SA-1 require special attention during use to ensure its optimal catalytic effect. With the continuous expansion of the application field of polyurethane products, the thermal catalyst SA-1 will play a more important role in the future.

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