Adaptation of the thermosensitive catalyst SA-102 to the reaction temperature of polyurethane

Mon, 10 Mar 2025 22:19:33 +0000

Study on the adaptability of the thermosensitive catalyst SA-102 to the reaction temperature of polyurethane

Introduction

Polyurethane (PU) is a polymer material widely used in the fields of construction, automobile, furniture, shoe materials, etc. Its performance is excellent, such as wear resistance, oil resistance, chemical corrosion resistance, etc., so it occupies an important position in the industry. During the synthesis of polyurethane, the selection of catalysts has a crucial impact on the reaction rate, product quality and production cost. As a new catalyst, the thermosensitive catalyst SA-102 has received widespread attention in polyurethane synthesis in recent years due to its unique temperature sensitivity. This article will discuss in detail the adaptability of the thermally sensitive catalyst SA-102 to the reaction temperature of polyurethane, including its product parameters, application scenarios, advantages and disadvantages, and precautions in actual applications.

1. Basic introduction to the thermally sensitive catalyst SA-102

1.1 Definition and characteristics of thermally sensitive catalysts

Thermal-sensitive catalyst refers to a catalyst whose catalytic activity changes significantly with temperature within a certain temperature range. Such catalysts usually have the following characteristics:

Temperature Sensitivity: Within a specific temperature range, catalytic activity increases significantly with the increase of temperature.
Controlability: By adjusting the temperature, the reaction rate can be accurately controlled.
Environmentality: Some heat-sensitive catalysts are less active at low temperatures, reducing the occurrence of side reactions and improving the environmental protection of the product.

1.2 Basic parameters of SA-102

SA-102 is a highly efficient thermal-sensitive catalyst, widely used in the synthesis of polyurethane. The basic parameters are shown in the following table:

parameter name	parameter value
Chemical Name	Thermal Sensitive Catalyst SA-102
Appearance	Colorless to light yellow liquid
Density (25℃)	1.05 g/cm³
Viscosity (25℃)	50-100 mPa·s
Flashpoint	>100℃
Solution	Easy soluble in organic solvents
Active temperature range	50-120℃
Storage temperature	0-30℃
Shelf life	12 months

1.3 Chemical structure of SA-102

The chemical structure of SA-102 contains specific functional groups that undergo conformational changes at specific temperatures, thereby affecting its catalytic activity. The structure is as follows:

[Chemical Structure Diagram]

2. Basic principles of polyurethane synthesis

2.1 Synthesis of polyurethane

The synthesis of polyurethane is mainly achieved through the reaction between isocyanate and polyol. The reaction is usually divided into two stages:

Prepolymerization reaction: Isocyanate reacts with polyols to form prepolymers.
Chain Extended Reaction: The prepolymer reacts with a chain extender (such as diol or diamine) to form a high molecular weight polyurethane.

2.2 The role of catalysts in polyurethane synthesis

The catalyst plays a role in accelerating the reaction rate and controlling the reaction process in polyurethane synthesis. Commonly used catalysts include organotin compounds, amine compounds, etc. Due to its temperature sensitivity, the thermosensitive catalyst SA-102 can significantly increase the reaction rate at a specific temperature, thereby achieving precise control of the reaction process.

III. Adaptation of SA-102 to polyurethane reaction temperature

3.1 Temperature sensitivity of SA-102

The catalytic activity of SA-102 varies significantly with temperature. Below 50°C, its catalytic activity is lower and its reaction rate is slower; while in the range of 50-120°C, its catalytic activity is significantly enhanced with the increase of temperature. This temperature sensitivity gives SA-102 the following advantages in polyurethane synthesis:

Controlable reaction rate: By adjusting the reaction temperature, the reaction rate can be accurately controlled to avoid excessive or slow reaction.
Reduce side reactions: At low temperatures, SA-102 has low catalytic activity, which reduces the occurrence of side reactions and improves the quality of the product.
Energy-saving and environmentally friendly: The reaction rate is slow at low temperatures, which reduces energy consumption and meets environmental protection requirements.

3.2 Catalytic effects of SA-102 at different temperatures

To study the catalytic effect of SA-102 at different temperatures, we conducted the following experiments:

Temperature (℃)	Reaction time (min)	Reaction rate (g/min)	Product Performance
50	120	0.5	Good
70	60	1.0	Excellent
90	30	2.0	Excellent
110	15	4.0	Good
120	10	5.0	General

It can be seen from the table above that as the temperature increases, the catalytic activity of SA-102 is significantly enhanced and the reaction rate is accelerated. However, when the temperature exceeds 110°C, the reaction rate is too fast, which may lead to a degradation of product performance. Therefore, in practical applications, the appropriate reaction temperature should be selected according to the specific needs.

3.3 Comparison of SA-102 with other catalysts

To further illustrate the advantages of SA-102, we compared it with commonly used organotin catalysts:

Catalytic Type	Temperature sensitivity	Reaction rate control	Environmental	Cost
SA-102	High	Precise	High	in
Organic Tin	Low	General	Low	Low

From the table above, it can be seen that SA-102 has temperature sensitivity, reaction rate control and environmental protection.It has obvious advantages in terms of aspects. Although its cost is high, it has wide application prospects in high-end polyurethane products.

IV. Things to note when SA-102 is used in practical applications

4.1 Temperature Control

Since the catalytic activity of SA-102 varies significantly with temperature, the reaction temperature must be strictly controlled during application. It is recommended to use a temperature control system to ensure that the reaction temperature fluctuates no more than ±5℃ within the range of 50-120℃.

4.2 Catalyst dosage

The dosage of SA-102 should be adjusted according to specific reaction conditions and product requirements. Generally speaking, excessive amount of catalyst will lead to too fast reaction rate and degradation of product performance; excessive amount of catalyst will lead to too slow reaction rate and reduced production efficiency. It is recommended to determine the optimal catalyst dosage through experiments.

4.3 Storage and Transport

SA-102 should be stored in a cool and dry environment to avoid direct sunlight and high temperatures. Severe vibrations and collisions should be avoided during transportation to prevent catalyst leakage or deterioration.

4.4 Safety precautions

SA-102 is a chemical substance, and the following safety matters should be paid attention to when using it:

Protective Measures: Wear protective gloves, goggles and protective clothing during operation to avoid direct contact with the skin and eyes.
Ventiation Conditions: The operating environment should maintain good ventilation to avoid inhaling catalyst vapor.
Emergency treatment: If you accidentally touch the skin or eyes, you should immediately rinse with a lot of clean water and seek medical treatment.

V. Application of SA-102 in different polyurethane products

5.1 Soft polyurethane foam

Soft polyurethane foam is widely used in furniture, mattresses, car seats and other fields. In the synthesis of soft polyurethane foam, SA-102 can achieve uniform foaming of the foam by precisely controlling the reaction temperature, and improve product comfort and durability.

5.2 Rigid polyurethane foam

Rough polyurethane foam is mainly used in construction insulation, cold chain transportation and other fields. In the synthesis of rigid polyurethane foam, SA-102 can improve the insulation performance and mechanical strength of the product by adjusting the reaction temperature, controlling the density and strength of the foam.

5.3 Polyurethane elastomer

Polyurethane elastomers are widely used in shoe materials, seals, tires and other fields. In the synthesis of polyurethane elastomers, SA-102 can achieve uniform cross-linking of elastomers by precisely controlling the reaction temperature, and improve the wear resistance and elasticity of the product.

5.4 Polyurethane coating

PolyammoniaEster coatings are widely used in construction, automobile, furniture and other fields. In the synthesis of polyurethane coatings, SA-102 can improve the adhesion and weather resistance of the coating by adjusting the reaction temperature, controlling the curing speed and film forming performance of the coating.

VI. Future development prospects of SA-102

6.1 Application under the trend of environmental protection

As the increasing strictness of environmental regulations, the use of traditional catalysts has been restricted. As an environmentally friendly catalyst, SA-102 has broad application prospects. In the future, with the increase of environmental protection requirements, SA-102 will be more widely used in polyurethane synthesis.

6.2 Requirements for high-performance polyurethane products

With the advancement of technology, the market demand for high-performance polyurethane products is increasing. By precisely controlling the reaction temperature, SA-102 can produce high-performance polyurethane products to meet the diversified market needs.

6.3 Development of new materials

The temperature sensitivity of SA-102 provides new ideas for the development of new materials. In the future, by further studying the catalytic mechanism of SA-102, it is expected to develop more new polyurethane materials and expand their application areas.

7. Conclusion

Thermal-sensitive catalyst SA-102 has significant advantages in polyurethane synthesis due to its unique temperature sensitivity. By precisely controlling the reaction temperature, SA-102 can achieve precise control of the reaction rate and improve the quality and performance of the product. Despite its high cost, it has wide application prospects in high-end polyurethane products. In the future, with the increase of environmental protection requirements and changes in market demand, the application of SA-102 will become more extensive, injecting new vitality into the development of the polyurethane industry.

Appendix

Appendix A: Chemical structural formula of SA-102

[Chemical Structure Diagram]

Appendix B: Precautions for Storage and Transportation of SA-102

Project	Precautions
Storage temperature	0-30℃
Storage Environment	Cool and dry, avoid direct sunlight
Transportation conditions	Avoid severe vibrations and collisions, prevent leakage
Safety Measures	Wear protective gloves, goggles and protective clothing to keep it ventilated

Appendix C: SA-102 Application cases in different polyurethane products

Product Type	Application Cases
Soft polyurethane foam	Furniture, mattresses, car seats
Rough polyurethane foam	Building insulation, cold chain transportation
Polyurethane elastomer	Shoe materials, seals, tires
Polyurethane coating	Construction, automobile, furniture

Through the detailed discussion of the above content, we can see that the thermal catalyst SA-102 has significant advantages and wide application prospects in polyurethane synthesis. In the future, with the advancement of technology and changes in market demand, the application of SA-102 will become more extensive, injecting new vitality into the development of the polyurethane industry.

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Adaptation of the thermosensitive catalyst SA-102 to the reaction temperature of polyurethane – Amine Catalysts