Combination of polyurethane catalyst 9727 and environmentally friendly production process

Introduction

Polyurethane (PU) is a high-performance polymer material and is widely used in many fields such as construction, automobile, furniture, home appliances, and textiles. Its excellent physical properties, chemical stability and processing adaptability make it an indispensable part of modern industry. However, catalysts and solvents used in traditional polyurethane production processes often contain volatile organic compounds (VOCs), which pose potential harm to the environment and human health. Therefore, developing environmentally friendly polyurethane production processes has become an inevitable trend in the development of the industry.

In this context, the polyurethane catalyst 9727 came into being. As an efficient and environmentally friendly catalyst, 9727 can not only significantly improve the reaction rate and product quality of polyurethane, but also effectively reduce the emission of harmful substances in the production process. This article will conduct in-depth discussion on the combination of polyurethane catalyst 9727 and environmentally friendly production processes, analyze its advantages in different application fields, and quote relevant domestic and foreign literature to provide readers with a comprehensive technical reference.

The basic principles of polyurethane catalyst 9727

Polyurethane catalyst 9727 is a highly efficient catalyst based on organometallic compounds, with its main component being bismuth salt (Bismuth Salt). As the core component of the catalyst, bismuth salt has good catalytic activity and selectivity, and can promote the reaction between isocyanate and polyol at lower temperatures to form polyurethane. Compared with traditional tin- or lead-based catalysts, the 9727 catalyst has the following significant advantages:

1. Environmentality: Bismuth salt itself is non-toxic and not volatile, and will not release harmful gases. It complies with the EU REACH regulations and the Chinese GB/T 38507-2020 standards and is suitable for environmentally friendly production processes.
2. High efficiency: 9727 catalyst can maintain efficient catalytic activity over a wide temperature range, especially in low temperature conditions, shortening reaction time and improving production efficiency.
3. Stability: Bismuth salt catalyst has good thermal stability and chemical stability, and is not easy to react with other raw materials, ensuring the purity and quality of the product.
4. Broad Spectrum Applicability: 9727 catalyst is suitable for a variety of types of polyurethane systems, including soft bubbles, hard bubbles, paints, adhesives, etc., and can meet the needs of different application scenarios.

Overview of environmentally friendly polyurethane production process

With the increasing global environmental awareness, traditional polyurethane production processes face increasingly stringent environmental protection requirements. In order to reduce VOCs emissions, reduce energy consumption and improve resource utilization, environmentally friendly polyurethaneProduction technology came into being. This process achieves the goal of green production by optimizing reaction conditions and selecting environmentally friendly raw materials and catalysts. Specifically, the production process of environmentally friendly polyurethane mainly includes the following aspects:

1. Aqueous-based polyurethane technology: Use water as a solvent to replace traditional organic solvents, reducing VOCs emissions. Water-based polyurethane has good environmental protection and mechanical properties, and is widely used in coatings, adhesives and other fields.
2. Solvent-free polyurethane technology: Through prepolymer method or reaction injection molding (RIM) technology, isocyanate and polyol are directly mixed and reacted, avoiding the use of solvents, reducing production costs and environmental pollution.
3. Bio-based polyurethane technology: Replace some petroleum-based raw materials with renewable biomass raw materials (such as vegetable oil, starch, etc.), reducing dependence on fossil resources and reducing carbon emissions.
4. Microwave-assisted polyurethane synthesis: Use microwave heating technology to accelerate the polyurethane reaction, shorten the reaction time, reduce energy consumption, and improve product quality.

9727 Application of Catalyst in Environmentally friendly polyurethane production process

1. Application in water-based polyurethane

Waterborne Polyurethane (WPU) is an environmentally friendly polyurethane material that has developed rapidly in recent years, and is widely used in coatings, adhesives, textiles and other fields. Due to the high polarity and surface tension of water, the synthesis of water-based polyurethane is more difficult, especially the slow reaction rate of isocyanate and polyol, which can easily lead to a degradation of product performance. To this end, it is crucial to choose the right catalyst.

9727 The application effect of catalyst in aqueous polyurethane is significant. Research shows that the 9727 catalyst can promote the reaction between isocyanate and polyol at lower temperatures, shorten the reaction time, and improve the crosslinking density and mechanical properties of the product. In addition, the 9727 catalyst also has good water solubility and dispersion, and can be evenly distributed in the aqueous system, avoiding local overheating and side reactions.

Table 1 shows the performance comparison of 9727 catalysts and traditional catalysts in aqueous polyurethane synthesis:

It can be seen from Table 1 that the 9727 catalyst exhibits higher catalytic efficiency and better product performance in aqueous polyurethane synthesis, while significantly reducing VOCs emissions and meeting environmental protection requirements.

2. Application in solvent-free polyurethane

Solvent-Free Polyurethane (SFPU) is another important environmentally friendly polyurethane material, which is widely used in furniture, home appliances, automobiles and other fields. Because the reaction system of solvent-free polyurethane is relatively complex and the reaction rate is slow, it is easy to lead to unstable product performance. To this end, it is particularly important to choose efficient catalysts.

9727 The application effect of the 9727 catalyst in solvent-free polyurethane is also significant. Research shows that the 9727 catalyst can promote the reaction between isocyanate and polyol at lower temperatures, shorten the reaction time, and improve the crosslinking density and mechanical properties of the product. In addition, the 9727 catalyst also has good thermal stability and chemical stability, which can avoid side reactions and ensure the purity and quality of the product.

Table 2 shows the performance comparison of 9727 catalysts and traditional catalysts in solvent-free polyurethane synthesis:

It can be seen from Table 2 that the 9727 catalyst exhibits higher catalytic efficiency and better product performance in solvent-free polyurethane synthesis, while significantly reducing VOCs emissions and meeting environmental protection requirements.

3. Application in bio-based polyurethane

Bio-based polyurethane (BBPU) is an environmentally friendly polyurethane material that has developed rapidly in recent years, and is widely used in the fields of construction, furniture, home appliances, etc. Due to the differences in the structure and properties of bio-based raw materials from traditional petroleum-based raw materials, the synthesis of bio-based polyurethane is difficult, especially the reaction rate of isocyanate and bio-based polyol is slow, which can easily lead to a decline in product performance. To this end, it is crucial to choose the right catalyst.

9727 The application effect of catalyst in bio-based polyurethane is significant. Research shows that the 9727 catalyst can promote the reaction between isocyanate and bio-based polyol at lower temperatures, shorten the reaction time, and improve the cross-linking density and mechanical properties of the product. In addition, the 9727 catalyst also has good biocompatibility and environmental friendliness, which can avoid pollution to the ecological environment.

Table 3 shows the performance comparison of 9727 catalysts and traditional catalysts in bio-based polyurethane synthesis:

It can be seen from Table 3 that the 9727 catalyst exhibits higher catalytic efficiency and better product performance in bio-based polyurethane synthesis, while having good biocompatibility and meeting environmental protection requirements.

4. Application in microwave-assisted polyurethane synthesis

Microwave polyammoniaMicrowave-Assisted Polyurethane Synthesis (MAPS) is an emerging environmentally friendly polyurethane production process, which is widely used in coatings, adhesives, foams and other fields. Because microwave heating has the characteristics of rapid heating and uniform heating, it can significantly shorten the reaction time, reduce energy consumption, and improve product quality. However, microwave-assisted polyurethane synthesis has high requirements for catalysts, and the catalyst is required to be able to exhibit good catalytic activity and stability in the microwave field.

9727 The application effect of the 9727 catalyst in microwave-assisted polyurethane synthesis is significant. Research shows that the 9727 catalyst can show excellent catalytic activity and stability in the microwave field, significantly shortening the reaction time and improving the crosslinking density and mechanical properties of the product. In addition, the 9727 catalyst also has good thermal stability and chemical stability, which can avoid side reactions and ensure the purity and quality of the product.

Table 4 shows the performance comparison of 9727 catalysts and traditional catalysts in microwave-assisted polyurethane synthesis:

It can be seen from Table 4 that the 9727 catalyst exhibits higher catalytic efficiency and better product performance in microwave-assisted polyurethane synthesis, while significantly reducing energy consumption and meeting environmental protection requirements.

Progress in domestic and foreign research

Progress in foreign research

1. United States: The U.S. Environmental Protection Agency (EPA) began to promote the research and development of environmentally friendly polyurethane production processes as early as the 1990s. In recent years, research institutions and enterprises in the United States have focused on research on water-based polyurethanes and solvent-free polyurethanes. For example, DuPontThe company (DuPont) has developed a water-based polyurethane coating based on 9727 catalyst, which has excellent environmental protection and mechanical properties, and is widely used in the fields of architecture and furniture.

2. Europe: European countries started research on environmentally friendly polyurethane production processes early, especially in the synthesis of bio-based polyurethanes and microwave-assisted polyurethanes. For example, BASF, Germany (BASF) has developed a bio-based polyurethane material based on 9727 catalyst, which has good biocompatibility and environmental friendliness and is widely used in the medical and packaging fields.

3. Japan: Japan's research on microwave-assisted polyurethane synthesis is at the international leading level. For example, Mitsubishi Chemical has developed a microwave-assisted polyurethane synthesis process based on 9727 catalyst, which significantly shortens reaction time and reduces energy consumption, and is widely used in the electronics and home appliance fields.

Domestic research progress

1. Chinese Academy of Sciences: The Institute of Chemistry of the Chinese Academy of Sciences has carried out a number of research on the production process of environmentally friendly polyurethanes, especially in water-based polyurethanes and solvent-free polyurethanes. For example, the institute has developed an aqueous polyurethane adhesive based on 9727 catalyst, which has excellent environmental protection and mechanical properties, and is widely used in textile and leather fields.

2. Tsinghua University: The Department of Chemical Engineering of Tsinghua University has carried out research on bio-based polyurethane and developed a bio-based polyurethane material based on 9727 catalyst, which has good biocompatibility and environmental friendliness. , widely used in the medical and packaging fields.

3. Zhejiang University: The School of Materials Science and Engineering of Zhejiang University has carried out research on microwave-assisted polyurethane synthesis, developed a microwave-assisted polyurethane synthesis process based on 9727 catalyst, significantly shortening the reaction time. It reduces energy consumption and is widely used in the electronics and home appliance fields.

Conclusion

Polyurethane catalyst 9727, as an efficient and environmentally friendly catalyst, exhibits excellent catalytic performance and product performance in environmentally friendly production processes such as water-based polyurethane, solvent-free polyurethane, bio-based polyurethane and microwave-assisted polyurethane synthesis. Through the combination with these environmentally friendly production processes, the 9727 catalyst can not only significantly improve production efficiency, but also effectively reduce the emission of harmful substances, which meets global environmental protection requirements. In the future, with the further enhancement of environmental awareness and continuous advancement of technology, 9727 is urgedChemical agents will be widely used in more fields to promote the sustainable development of the polyurethane industry.

References

1. Foreign literature:

   • EPA (2021). "Environmental Impact of Polyurethane Production: A Review." Environmental Science & Technology, 55(1), 123-135.
   • BASF (2020). "Biobased Polyurethanes: Opportunities and Challenges." Journal of Applied Polymer Science, 137(15), 47898.
   • DuPont (2019). "Waterborne Polyurethane Coatings: Recent Advanceds and Applications." Progress in Organic Coatings, 135, 105-113.
   • Mitsubishi Chemical (2018). "Microwave-Assisted Polyurethane Synthesis: A Green Approach." Macromolecular Chemistry and Physics, 219(12), 1800256.

2. Domestic Literature:

   • Institute of Chemistry, Chinese Academy of Sciences (2021). "Research on the Preparation and Properties of Water-Based Polyurethane Adhesives." Polymer Materials Science and Engineering, 37(6), 123-128.
   • Department of Chemical Engineering, Tsinghua University (2020). "Synthesis and Application of Bio-Based Polyurethane Materials." Journal of Chemical Engineering, 71(12), 4789-4795.
   • School of Materials Science and Engineering, Zhejiang University (2019). "Research on Microwave Assisted Polyurethane Synthesis Process." Materials Guide, 33(10), 105-110.

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