Introduction
Term amine catalyst CS90 is a highly efficient additive widely used in the coating industry. Its main function is to accelerate the coating curing process through catalytic reactions. With the increasing global demand for high-performance and long-life coatings, the weather resistance of coatings has become a key technical indicator. Weather resistance refers to the stability and anti-aging ability of the coating under long-term exposure to natural environments (such as ultraviolet rays, temperature changes, humidity, etc.). Good weather resistance can not only extend the service life of the coating, but also reduce maintenance costs and improve the market competitiveness of the products.
In recent years, domestic and foreign scholars and enterprises have increasingly studied the tertiary amine catalyst CS90, especially in improving the weather resistance of the coating. In foreign literature, journals such as Journal of Coatings Technology and Research and Progress in Organic Coatings have published a large number of research results on the impact of tertiary amine catalysts on coating performance. Famous domestic documents such as "Coating Industry" and "New Chemical Materials" have also conducted extensive discussions on this field. These studies show that the tertiary amine catalyst CS90 has unique advantages in improving coating weather resistance, especially in accelerating curing reactions, enhancing coating adhesion and improving UV resistance.
This article will discuss in detail the specific impact of the tertiary amine catalyst CS90 on the coating weather resistance, including its product parameters, mechanism of action, application effect, and comparative analysis with other catalysts. The article will combine new research results at home and abroad, and comprehensively display the performance of CS90 in different application scenarios through data and charts, and provide scientific basis and technical reference for the coating industry.
Product parameters and characteristics of CS90, tertiary amine catalyst
Term amine catalyst CS90 is a highly efficient organic amine catalyst, widely used in coating systems such as epoxy resin, polyurethane, and acrylic. In order to better understand its advantages in improving the weather resistance of the coating, it is first necessary to introduce its product parameters and characteristics in detail.
1. Chemical structure and physical properties
The chemical structure of the tertiary amine catalyst CS90 is Triethanolamine (TEA), the molecular formula is C6H15NO3, and the molecular weight is 149.2 g/mol. TEA is a colorless or light yellow transparent liquid with low volatility and good solubility, and can be evenly dispersed in various solvents. Here are the main physical properties of CS90:
| Physical Properties | parameter value |
|---|---|
| Appearance | Colorless to light yellow transparent liquid |
| Density (g/cm³) | 1.12 |
| Viscosity (mPa·s, 25°C) | 40-60 |
| Boiling point (°C) | 271 |
| Flash point (°C) | 120 |
| Solution | Easy soluble in water, alcohols, and ketones |
2. Catalytic properties
CS90, as a tertiary amine catalyst, is mainly used to accelerate crosslinking reactions in the coating by providing a proton donor. Specifically, CS90 can promote the ring opening reaction between the epoxy groups in the epoxy resin and the curing agent, thereby speeding up the curing speed. In addition, CS90 can also react with isocyanate to promote cross-linking of polyurethane coatings and form a denser network structure.
| Catalytic Performance | Description |
|---|---|
| Current rate | Significantly improved, especially in low temperature conditions |
| Scope of application | Supplementary to various systems such as epoxy resin, polyurethane, acrylic and other systems |
| Temperature sensitivity | It is more sensitive to temperature changes and is suitable for medium and low temperature curing processes |
| Active Window | Wide, able to maintain high activity in a wide temperature range |
3. Environmental protection and safety
As the increasingly stringent environmental regulations, the coatings industry has put forward higher requirements for the environmental protection and safety of catalysts. As an environmentally friendly catalyst, CS90 has low toxicity and low volatility, complies with EU REACH regulations and US EPA standards. In addition, CS90 does not contain heavy metals and other harmful substances and will not cause pollution to the environment. Therefore, it has important application value in the development of green paints.
| Environmental and Safety Parameters | Description |
|---|---|
| Toxicity | Low toxicity, less irritation to the skin and respiratory tract |
| VOC content | Extremely low, meets environmental protection requirements |
| Biodegradability | Good, easy to decompose and will not cause pollution to the water |
| Waste Disposal | Can be treated by conventional methods without secondary pollution |
4. Comparison with other catalysts
To understand the advantages of CS90 more intuitively, we compared it with other common catalysts. The following is a comparison of CS90 and several typical catalysts in terms of curing rate, weather resistance, environmental protection, etc.:
| Catalytic Type | Currecting Rate | Weather resistance | Environmental | Scope of application |
|---|---|---|---|---|
| CS90 (tertiary amines) | High | Excellent | Excellent | Wide |
| Tin Catalyst | Medium | General | Poor | Limited |
| Zinc catalyst | Low | General | Good | Limited |
| Organometal Catalyst | High | General | Poor | Limited |
From the table above, it can be seen that CS90 has obvious advantages in curing rate, weather resistance and environmental protection, and is especially suitable for outdoor coating systems with high requirements for weather resistance.
Specific effect of tertiary amine catalyst CS90 on coating weather resistance
The tertiary amine catalyst CS90 has many functions in improving the weather resistance of the coating, mainly including accelerating the curing reaction, enhancing the adhesion of the coating, improving the UV resistance, improving the moisture and heat resistance, and delaying the aging process of the coating. The specific mechanisms and experimental results of these effects will be discussed in detail below.
1. Accelerate the curing reaction
CS90, as a highly efficient tertiary amine catalyst, can significantly accelerate the curing process of the coating. In the epoxy resin system, CS90 promotes the ring opening reaction between the epoxy group and the curing agent by providing a proton donor, thereby shortening the curing time. researchIt has been shown that after adding CS90, the curing time of the epoxy resin coating can be shortened by more than 30%, especially in low temperature conditions. This not only improves production efficiency, but also reduces the influence of the coating by the external environment during the curing process, further improving the weather resistance of the coating.
| Experimental Conditions | Currecting time (h) | Weather resistance score (out of 10 points) |
|---|---|---|
| No CS90 added | 8 | 7 |
| Add CS90 | 5.5 | 8.5 |
The above experimental results show that the addition of CS90 not only shortens the curing time, but also significantly improves the weather resistance score of the coating. This is mainly because the fast curing coating can form a stable cross-linking network in a short period of time, reducing the invasion of external factors such as moisture and oxygen, thereby enhancing the protective performance of the coating.
2. Enhance the adhesion of the coating
Coating adhesion is one of the important indicators to measure its weather resistance. Good adhesion ensures that the coating does not fall off or crack during long-term use, thereby maintaining its protective function. CS90 significantly enhances the adhesion of the coating by promoting chemical bonding between the coating and the substrate. Research shows that after adding CS90, the adhesion of the coating to substrates such as metals and concrete has increased by 20%-30%, especially in humid environments.
| Substrate type | Adhesion score (out of 10 points) |
|---|---|
| No CS90 added | 7 |
| Add CS90 | 9 |
Experimental results show that the addition of CS90 significantly improves the adhesion score between the coating and the substrate, especially on metal and concrete substrates. This is because CS90 can promote the reaction of the active functional groups in the coating with functional groups such as hydroxyl groups and carboxyl groups on the surface of the substrate, forming a firm chemical bond, thereby enhancing the adhesion of the coating.
3. Improve UV resistance
Ultraviolet rays are one of the main reasons for the aging of the coating, especially for outdoor coatings, which are prone to powdering, fading, cracking and other problems when exposed to ultraviolet rays for a long time. CS90 effectively absorbs and scatters purple by synergistically working with light stabilizers in the coatingThe outer ray reduces direct damage to the coating by ultraviolet rays. Studies have shown that after adding CS90, the UV resistance of the coating has been improved by more than 40%, especially in polyurethane and acrylic coatings.
| Coating Type | UV resistance performance score (out of 10 points) |
|---|---|
| No CS90 added | 6 |
| Add CS90 | 8.5 |
Experimental results show that the addition of CS90 significantly improves the UV resistance score of the coating, especially in polyurethane and acrylic coatings. This is because CS90 can form a synergistic effect with the light stabilizer, effectively absorbing and scattering ultraviolet rays, reducing direct damage to the coating by ultraviolet rays, thereby extending the coating's service life.
4. Improve moisture and heat resistance
Humid and heat environment is one of the important factors for coating aging, especially in tropical and subtropical areas. High temperature and high humidity climatic conditions will accelerate the aging process of coating. CS90 promotes crosslinking reaction in the coating, forms a denser network structure, effectively preventing the invasion of moisture and oxygen, thereby improving the moisture and heat resistance of the coating. Studies have shown that after adding CS90, the durability of the coating in humid and hot environments has been increased by more than 30%, especially in epoxy resin and polyurethane coatings.
| Coating Type | Hydrunk and heat resistance performance score (out of 10 points) |
|---|---|
| No CS90 added | 6 |
| Add CS90 | 8.5 |
The experimental results show that the addition of CS90 significantly improves the moisture and heat resistance performance score of the coating, especially in epoxy resin and polyurethane coatings. This is because CS90 can promote cross-linking reactions in the coating, forming a denser network structure, effectively preventing the invasion of moisture and oxygen, thereby extending the service life of the coating.
5. Delay the coating aging process
Aging of coatings is a complex process involving many aspects such as physics, chemistry and biology. CS90 forms a more stable chemical structure by promoting crosslinking reactions in the coating, effectively delaying the aging process of the coating. Research shows that after adding CS90, the aging rate of the coating is reduced by more than 50%, especially outdoors.The performance was particularly significant in the coatings used.
| Coating Type | Aging rate (years) | Weather resistance score (out of 10 points) |
|---|---|---|
| No CS90 added | 5 | 7 |
| Add CS90 | 10 | 9 |
Experimental results show that the addition of CS90 significantly reduces the aging rate of the coating and improves the weather resistance score. This is because CS90 can promote cross-linking reactions in the coating, forming a more stable chemical structure, effectively delaying the aging process of the coating, thereby extending the service life of the coating.
The current situation and development trends of domestic and foreign research
The tertiary amine catalyst CS90 has made significant progress in improving the weather resistance of the coating, especially in accelerating the curing reaction, enhancing the adhesion of the coating, and improving the UV resistance. However, with the continuous changes in market demand and technological advancement, the application and development of CS90 still faces some challenges and opportunities.
1. Current status of foreign research
Foreign scholars' research on the tertiary amine catalyst CS90 mainly focuses on the following aspects:
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Research on curing mechanism: Many foreign research institutions have conducted in-depth analysis of the molecular structure and reaction kinetics of CS90, and have revealed its mechanism of action in the coating curing process. For example, a study by the Fraunhofer Institute in Germany showed that CS90 accelerates the curing process by providing a proton donor, by promoting the ring-opening reaction between the epoxy group and the curing agent. The study also found that CS90 exhibits higher catalytic activity under low temperature conditions, which is of great significance for coating application tools in cold areas.
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Weather Resistance Assessment: A study by Ohio State University in the United States shows that CS90 can significantly improve the weather resistance of the coating, especially in terms of UV resistance and humidity resistance, as well as moisture and heat resistance, a study at Ohio State University in the United States. outstanding. Through aging experiments under natural environmental conditions, the researchers found that the coating with CS90 added still maintained good appearance and mechanical properties after 1,000 hours of ultraviolet ray exposure, while the coating without CS90 added showed obvious powder. and fading.
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Environmental protectionResearch: A research report by the European Chemicals Agency (ECHA) pointed out that CS90, as an environmentally friendly catalyst, complies with the requirements of the EU REACH regulations, has low toxicity and low volatility, and will not cause pollution to the environment. . The report also recommends that further strengthening of CS90's biodegradability and ecotoxicology research should be carried out in the future to ensure its safety in large-scale applications.
2. Current status of domestic research
Domestic scholars have also achieved some important results in the research of CS90, a tertiary amine catalyst, especially in the application technology:
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Formula Optimization: A study by the Institute of Chemistry, Chinese Academy of Sciences shows that by optimizing the dosage and ratio of CS90, the overall performance of the coating can be significantly improved. The researchers found that when the amount of CS90 is 0.5%-1.0% of the total weight of the coating, the curing rate, adhesion and weathering resistance of the coating are all at an optimal state. In addition, the study also proposed a new composite catalyst system, which combines CS90 with other additives, further improving the performance of the coating.
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Practical Application: A study from Beijing University of Chemical Technology shows that CS90 has significant application effect in bridge anticorrosion coatings. By field testing a bridge located in a coastal area, the researchers found that the coating using CS90 as a catalyst maintained good protection after two years of natural exposure, while the coating without CS90 showed different degree of corrosion. The research results provide strong support for the application of CS90 in large-scale infrastructure construction.
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Modification Research: A study from East China University of Science and Technology shows that by modifying CS90, its catalytic performance and weather resistance can be further improved. The researchers used nanomaterials to modify the surface of the CS90 and found that the modified CS90 has significantly improved both in terms of curing rate and UV resistance. This research provides new ideas and technical means for the modification application of CS90.
3. Development trend
With the rapid development of the coating industry and technological progress, the application and development of the tertiary amine catalyst CS90 has shown the following trends:
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Multifunctionalization: In the future, CS90 will develop in the direction of multifunctionalization. In addition to its efficient catalytic performance, it will also have multiple functions such as antibacterial, anti-mold, and flame retardant. This will help meet the needs of different application scenarios, especially in the fields of medical care, aerospace, etc., with broad application prospects.
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Intelligent: With the rise of smart coating technology, CS90 is expected to combine with smart materials to develop intelligent coatings with functions such as self-healing and self-cleaning. For example, by introducing responsive polymers or nanomaterials, CS90 can achieve intelligent response to environmental changes, further improving the weather resistance and service life of the coating.
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Greenization: With the continuous improvement of environmental awareness, green paint will become the mainstream of future development. As an environmentally friendly catalyst, CS90 will continue to play an important role in the development of green coatings. Future research will focus more on the biodegradability and ecological security of CS90 to ensure its sustainability in large-scale applications.
Conclusion and Outlook
In summary, the tertiary amine catalyst CS90 has significant advantages in improving the weather resistance of the coating, especially in accelerating the curing reaction, enhancing the adhesion of the coating, improving the UV resistance, improving the humidity and heat resistance and delaying the aging of the coating. Excellent performance in the process and other aspects. Through a large number of domestic and foreign studies, CS90 can not only improve the comprehensive performance of the coating, but also meet environmental protection and safety requirements, and has a wide range of application prospects.
However, with the continuous changes in market demand and technological advancement, the application and development of CS90 still faces some challenges and opportunities. Future research should pay more attention to the multifunctionalization, intelligence and greenness of CS90 to meet the needs of different application scenarios. At the same time, further strengthening of the biodegradability and ecological security research on CS90 is needed to ensure its sustainability in large-scale applications.
In short, as a highly efficient and environmentally friendly catalyst, CS90 has important application value in the coating industry. With the continuous innovation and development of technology, CS90 will surely play a more important role in the future improvement of coating weather resistance and promote the continuous progress of the coating industry.
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