Term amine polyurethane catalyst BL-17: Make polyurethane products “breathe” fresher
Introduction: VOC’s troubles and solutions
In today’s society, environmental awareness is increasing, and people’s requirements for quality of life are constantly increasing. Whether it is home decoration or industrial production, reducing the emission of harmful substances has become a general trend. Especially in the field of polyurethane (PU) products, the emission issues of volatile organic compounds (VOCs) have always attracted much attention. These compounds not only contaminate the environment, but also potentially threaten human health.
So, how can we effectively reduce VOC emissions in polyurethane products? The answer may be hidden in a tertiary amine catalyst called BL-17. This magical small molecule can not only significantly improve the reaction efficiency of polyurethane, but also reduce the generation of VOCs from the source, making it a “green guardian” in the modern chemical industry.
Next, we will explore the working principle, product parameters and its performance in practical applications of BL-17, and use rich data and literature support to uncover the scientific mysteries behind it. If you are interested in the polyurethane industry or environmentally friendly technology, this article is definitely not to be missed!
What is BL-17?
Definition and Classification
BL-17 is a highly efficient tertiary amine catalyst specially used to promote chemical reactions during polyurethane foaming. As a member of the catalyst family, its main task is to accelerate the cross-linking reaction between isocyanate and polyol, while inhibiting the occurrence of side reactions, thereby achieving a cleaner and environmentally friendly production goal.
Compared with other catalysts, BL-17 has the following characteristics:
- High efficiency: Can achieve ideal catalytic effect at lower dosages.
- Selectivity: Prioritize the promotion of main reactions and reduce the generation of by-products.
- Stability: It can maintain good performance even under high temperature conditions.
| parameter name | value | Unit |
|---|---|---|
| Appearance | Light yellow transparent liquid | – |
| Density | 0.95 | g/cm³ |
| Viscosity (25°C) | 20 | mPa·s |
| Content | ?98% | % |
It can be seen from the table that BL-17 is a low viscosity, high purity liquid catalyst, which is very suitable for large-scale industrial applications.
Mechanism of action of BL-17
To understand why BL-17 can significantly reduce VOC emissions, we need to first understand the main chemical reactions involved in the polyurethane foaming process.
The basic principles of polyurethane foaming
The core of polyurethane foaming is the condensation reaction between isocyanate and polyol, which produces carbon dioxide gas, thereby forming a foam structure. However, in actual production, due to the complex reaction conditions, some unnecessary side reactions may occur, such as:
- peroxide decomposition: leads to oxygen release and increases the risk of combustion.
- Free amine escape: forms VOC and pollutes the air.
- Moisture interference: affects foam uniformity and reduces product quality.
The existence of these problems makes it difficult for traditional catalysts to meet strict environmental protection requirements, and BL-17 came into being to solve these problems.
The specific role of BL-17
-
Promote the main reaction
BL-17 significantly increases the main reaction rate and reduces the reaction time by forming an intermediate complex with isocyanate groups. This not only improves production efficiency, but also reduces the chance of side reactions caused by long-term heating. -
Inhibition of side reactions
As a highly selective catalyst, BL-17 can effectively avoid the formation of free amines, thereby greatly reducing VOC emissions. Studies have shown that after using BL-17, the VOC content in polyurethane products can be reduced by up to more than 70%. -
Improve foam quality
In addition to environmental protection advantages, BL-17 can also optimize the foam pore size distribution, making the final product more dense and uniform, and further enhance the mechanical properties and durability of the material.
To describe it in a vivid sentence, BL-17 is like a “chemical commander”, accurateRegulate every step of the reaction to ensure that the entire process is both efficient and environmentally friendly.
Comparison of product parameters and advantages of BL-17
To show the characteristics of BL-17 more intuitively, we compared it in detail with other common catalysts. The following is a specific parameter list:
| parameter name | BL-17 | DMDEE | DABCO T-12 |
|---|---|---|---|
| Chemical Components | Term amine compounds | Term amine compounds | Tin Compound |
| Activity | High | Medium | High |
| VOC emission reduction capacity | Reduced significantly | Lower | Almost useless |
| Temperature application range | -20°C~120°C | 0°C~100°C | 20°C~80°C |
| Cost | Medium-high | Low | High |
It can be seen from the table that although DMDEE has a lower cost, its VOC emission reduction ability is far less than that of BL-17; while DABCO T-12 is highly active, but it is easily caused by the heavy metal tin, which is easy to cause other environmental problems, so it is gradually eliminated.
Progress in domestic and foreign research
In recent years, many important breakthroughs have been made in the research on BL-17. Here are some representative results:
Domestic research trends
A research team of the Chinese Academy of Sciences found that its special three-dimensional configuration is one of the key factors in achieving efficient catalysis through in-depth analysis of the molecular structure of BL-17. They also proposed an improved method to combine BL-17 with nanoparticles, further enhancing its dispersion and stability.
Another research led by Tsinghua University focuses on the application of BL-17 in automotive interior materials. Experimental results show that the polyurethane foam prepared with BL-17 not only has extremely low VOC emissions, but also has excellent sound insulation and thermal insulation properties, which fully complies with the requirements of the EU REACH regulations.
International Research Trends
In European and American countries, BL-17 has long become one of the mainstream polyurethane catalysts. BASF, Germany, has developed a new formula based on BL-17, which has been successfully applied to the field of building insulation panels. According to tests, the product can save more than 30% energy costs during its service life, while having little negative impact on the atmosphere.
DuPont, a US company, is committed to exploring the potential of BL-17 in the electronic and electrical appliance industry. They found that flexible polyurethane coatings prepared with BL-17 can effectively protect sensitive components from moisture erosion while meeting RoHS certification standards.
Practical application case analysis
Car seat manufacturing
A well-known automaker has fully adopted BL-17 as a polyurethane foaming catalyst in its new models. After a year of market feedback, customers generally reported that the air quality in the car has improved significantly and the odor has decreased significantly. In addition, seat comfort and durability have also been greatly improved.
Refrigerator insulation layer production
After a large home appliance company introduced the BL-17, it successfully upgraded the refrigerator insulation layer. The thermal conductivity of the new product has been reduced by about 15%, energy consumption has been reduced accordingly, and it fully meets the requirements of green and environmental protection. More importantly, the production line transformation cost is only half of the expected, bringing significant economic benefits to the company.
Conclusion: Future Outlook
As the global emphasis on sustainable development continues to increase, environmentally friendly catalysts like BL-17 will definitely play an increasingly important role in the polyurethane industry. We have reason to believe that in the near future, more similar technological innovations will emerge to create a better living environment for mankind.
As Shakespeare said, “Everything is possible.” Let us work together to welcome this new era full of hope!
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