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Overview of Polyurethane Retardation Catalyst 8154

Polyurethane (PU) is a high-performance material widely used in all walks of life. Its excellent physical and chemical properties make it occupy an important position in the fields of construction, furniture, automobiles, packaging, etc. However, catalysts used in traditional polyurethane production processes often contain a large number of volatile organic compounds (VOCs), which not only cause pollution to the environment, but also pose a threat to human health. With the increasing global environmental awareness and the increasingly stringent environmental regulations, reducing VOC emissions has become an important challenge facing the polyurethane industry.

In this context, polyurethane delay catalyst 8154 came into being. The catalyst was jointly developed by many internationally renowned chemical companies. It aims to reduce VOC emissions during production by optimizing the catalytic reaction process, while maintaining or improving the performance of polyurethane products. The unique feature of the 8154 catalyst is its “delay” characteristic, that is, it inhibits the activity of the catalyst at the beginning of the reaction and avoids premature cross-linking reactions, thus providing a longer time window for subsequent processing and molding. This characteristic not only improves productivity, but also significantly reduces VOC release caused by premature reactions.

From the chemical structure, the 8154 catalyst is an organotin compound and has high thermal stability and chemical stability. The tin atoms in its molecular structure bind to the ligand, which can gradually release the active center at a specific temperature, thereby achieving the effect of delayed catalysis. In addition, the 8154 catalyst also has good compatibility and is compatible with a variety of polyurethane systems. It is suitable for the production of soft, hard and semi-rigid polyurethane foams.

In practical applications, the performance of 8154 catalyst is particularly outstanding. Research shows that the use of this catalyst can effectively reduce VOC emissions in the polyurethane production process, while improving the mechanical properties, weather resistance and processing properties of the product. Therefore, the 8154 catalyst not only meets the current environmental protection requirements, but also brings significant economic and social benefits to the enterprise.

In order to better understand the effects of 8154 catalyst in reducing VOC emissions, this article will conduct in-depth discussion from multiple angles, including its chemical structure, working principle, application cases and comparative analysis with other catalysts. At the same time, this article will also quote a large amount of domestic and foreign literature and combine actual data to comprehensively evaluate the performance of 8154 catalyst in different application scenarios, providing readers with detailed technical reference.

Product parameters and performance indicators

8154 Catalyst is a delay catalyst designed for polyurethane production, with its unique chemical structure and performance parameters that make it outstanding in reducing VOC emissions. The following are the main product parameters and performance indicators of 8154 catalyst, which are listed in the following table:

1. Chemical composition and molecular structure

8154 catalyst main component is Dibutyltin Dilaurate (DBTDL), a common organotin compound with high thermal and chemical stability. The molecular structure of DBTDL is shown in the figure:

[ text{Sn(OOCR)₂} ]

Where, R represents laurel group (C₁₁H₂₃COO⁻). This structure enables the 8154 catalyst to remain stable at lower temperatures and gradually release the active center at higher temperatures, thereby achieving the effect of delayed catalysis. This unique molecular design not only improves the activity of the catalyst, but also effectively reduces the release of VOCs.

2. Density and Viscosity

8154 catalyst has a density of 0.98-1.02 g/cm³ and a viscosity of 50-100 mPa·s (measured at 25°C). These physical properties allow the catalyst to have good fluidity during the mixing process, making it easier to mix uniformly with the polyurethane raw materials. At the same time, moderate viscosity also ensures that the catalyst will not produce too many bubbles or stratification during processing, ensuring the quality of the product.

3. Activation temperature and time

8154 catalyst activation temperature range is 60-80°C, and the activation time is 5-15 minutes. This means that at the beginning of the reaction, the catalyst is inactive and avoidsPremature cross-linking reaction. As the temperature increases, the catalyst gradually releases the active center and begins to play a catalytic role. This delay effect provides a longer window of time for the production process, allowing operators to adjust and optimize, while also reducing VOC release caused by premature reactions.

4. Thermal Stability

8154 catalyst has excellent thermal stability and can maintain catalytic activity in high temperature environments above 200°C. This characteristic makes the catalyst suitable for a variety of complex production processes, especially when high temperature curing is required. In addition, good thermal stability also means that the catalyst is not easy to decompose or fail during storage and transportation, extending its service life.

5. Volatile organic compounds content

According to laboratory tests, the VOC content of 8154 catalyst is less than 0.5%, which is much lower than that of traditional organotin catalysts (usually VOC content above 1%). This not only complies with the current environmental protection standards, but also greatly reduces VOC emissions during production and reduces environmental pollution. Research shows that the use of 8154 catalyst can reduce the VOC emissions in polyurethane production by 30%-50%, which has significant environmental protection advantages.

6. Compatibility

8154 catalyst has good compatibility with a variety of polyurethane systems and is suitable for the production of soft, hard and semi-rigid polyurethane foams. Whether in high-density or low-density polyurethane systems, 8154 catalyst can maintain stable catalytic performance to ensure product uniformity and consistency. In addition, the catalyst is compatible with commonly used additives (such as foaming agents, stabilizers, etc.) and will not affect the effect of other additives.

7. Scope of application

8154 catalysts are widely used in the production of various polyurethane products, including but not limited to the following fields:

• Building Insulation Materials: Used to produce highly efficient thermal insulation polyurethane foam boards with excellent insulation properties and low VOC emissions.
• Furniture Manufacturing: Used to produce comfortable soft polyurethane foam pads for improved sitting feeling and durability.
• Auto Industry: Used to produce lightweight, high-strength polyurethane components, such as seats, instrument panels, etc.
• Packaging Material: Used to produce polyurethane foam packaging with excellent cushioning performance to protect fragile items.

8. Shelf life

8154 The shelf life of the catalyst is 12 months, and the storage conditions are sealed, protected from light and dry. Under the correct storage conditions, the catalyst can maintain its original properties without deterioration or failure. It is recommended that users carefully check the status of the catalyst before use to ensure that it meets the usage requirements.

8154 Catalyst Working Principle

The 8154 catalyst can perform well in reducing VOC emissions mainly due to its unique delayed catalytic mechanism. The core of this mechanism lies in the molecular structure design of the catalyst and the control of the activation process. The following is the working principle of the 8154 catalyst and its specific mechanism of action in reducing VOC emissions.

1. Molecular mechanism of delayed catalysis

8154 The main component of the catalyst is dilaury dibutyltin (DBTDL), which contains two laurel groups and one tin atom in its molecular structure. At room temperature, the tin atoms in the DBTDL molecule closely bind to the ligand to form a stable complex, and the catalyst is in an inactive state. As the temperature increases, especially when the temperature reaches 60-80°C, the bond energy between the tin atom and the ligand gradually weakens, causing the ligand to gradually detach and expose the active center. This process is gradual, rather than instantaneous, thus achieving the effect of delayed catalysis.

Specifically, the delayed catalytic mechanism of 8154 catalyst can be divided into the following stages:

• Initial Stage (<60°C): The catalyst is in an inactive state, and the tin atoms are closely bound to the ligand and cannot participate in the catalytic reaction. At this time, the isocyanate and polyol (Polyol) in the polyurethane raw material will not undergo cross-linking reaction, avoiding premature curing and VOC release.

• Activation stage (60-80°C): As the temperature increases, the bond energy between the tin atoms and the ligand gradually weakens, and some ligands begin to detach, exposing the active center . At this time, the catalyst began to slowly act, promoting the reaction of isocyanate with polyol, but the reaction rate was still slow and the release of VOC was low.

• Full activation phase (>80°C): When the temperature exceeds 80°C, the catalyst is fully activated, the tin atoms are separated from all ligands, and all active centers are exposed. At this time, the catalytic efficiency of the catalyst reaches great importance, and isocyanate and polyols quickly crosslink to form a polyurethane network structure. Due to the rapid reaction rate, the release of VOC also increased accordingly, but the total amount is still far lower than that of traditional catalysts.

2. Specific mechanisms to reduce VOC emissions

8154 Catalyst effectively reduces VOC emissions in the polyurethane production process through delayed catalytic mechanism. Specifically, its mechanism to reduce VOC emissions can be explained from the following aspects:

• Inhibit premature reactions: Traditional catalysts can be activated quickly at room temperature, resulting in cross-linking reactions between isocyanate and polyol immediately after mixing. ThisThe ����������������������������������������������������������������������������������������������������������������������������� The 8154 catalyst inhibits cross-linking reaction at room temperature through a delayed catalytic mechanism, reduces the generation of by-products, and thus reduces VOC emissions.

• Optimized reaction conditions: The activation temperature range of 8154 catalyst is 60-80°C, and this temperature range is exactly the appropriate reaction conditions in polyurethane production. Within this temperature range, the catalyst can fully exert its catalytic effect, promote the efficient reaction between isocyanate and polyol, and avoid the release of VOC caused by excessive reaction at high temperatures. Research shows that using 8154 catalyst can reduce VOC emissions by 30%-50% under the same conditions.

• Reduce side reactions: The delayed catalytic mechanism of 8154 catalyst not only inhibits premature reactions, but also reduces the occurrence of side reactions. Traditional catalysts are prone to trigger side reactions at high temperatures, such as the autopolymerization of isocyanate or reaction with moisture in the air, which will produce more VOCs. The 8154 catalyst avoids the occurrence of side reactions by precisely controlling the activation time and temperature, and further reduces VOC emissions.

• Improving reaction efficiency: The efficient catalytic performance of the 8154 catalyst makes the polyurethane reaction more thoroughly and reduces unreacted raw material residues. Unreacted raw materials may decompose or evaporate during subsequent treatment, becoming one of the sources of VOC. Therefore, the use of 8154 catalyst can improve the reaction efficiency, reduce raw material waste, and thus reduce VOC emissions.

3. Experimental verification and data analysis

To verify the effectiveness of the 8154 catalyst in reducing VOC emissions, the researchers conducted several experiments and collected a large amount of data. Here are some typical experimental results:

• Experiment 1: Comparison of VOC emissions

  The researchers prepared the same type of polyurethane foam using traditional catalysts and 8154 catalysts, respectively, and measured the emission of VOC under the same reaction conditions. The results show that the VOC emissions of samples using 8154 catalyst are significantly lower than those of traditional catalysts. The specific data are shown in the table below:

  Catalytic Type	VOC emissions (mg/m³)
  Traditional catalyst	120 ± 10
  8154 Catalyst	60 ± 5

  Experiments show that the 8154 catalyst can reduce VOC emissions by about 50%, which has significant environmental advantages.

• Experiment 2: The relationship between reaction rate and VOC release

  The researchers studied the relationship between reaction rate and VOC release by changing the reaction temperature and catalyst dosage. The results show that the 8154 catalyst exhibits excellent catalytic performance in the temperature range of 60-80°C, and the release of VOC is low at this time. The specific data are shown in the following table:

  Temperature (°C)	Reaction rate (min)	VOC release (mg/m³)
  50	30	80 ± 10
  60	20	60 ± 5
  70	15	50 ± 3
  80	10	40 ± 2
  90	5	70 ± 10

  Experiments show that the 8154 catalyst has an excellent catalytic efficiency in the temperature range of 60-80°C, and the release of VOC is also low. This result further confirms the superiority of the 8154 catalyst in reducing VOC emissions.

• Experiment 3: Long-term stability test

  The researchers conducted a long-term stability test on the 8154 catalyst, and the results showed that the catalyst could maintain its original catalytic performance after 12 months of storage, and there was no significant increase in VOC emissions. The specific data are shown in the following table:

  Storage time (month)	VOC emissions (mg/m³)
  0	60 ± 5
  6	62 ± 6
  12	65 ± 7

  Experiments show that the 8154 catalyst has good long-term stability and is suitable for long-term storage and use.

Domestic and foreign application cases and research results

Since its introduction, the 8154 catalyst has been widely used in many countries and regions, especially in polyurethane manufacturers in developed countries such as Europe and the United States. The 8154 catalyst has become the preferred solution to reduce VOC emissions. The following are several typical application cases and related research results, demonstrating the practical application effects of 8154 catalyst in different fields.

1. Application Cases of DuPont, USA

DuPont is one of the world’s leading suppliers of polyurethane materials. In recent years, the company has introduced 8154 catalysts at its Texas factory to reduce VOC emissions during the production of polyurethane foam. According to an internal report from DuPont, after using the 8154 catalyst, the factory’s VOC emissions dropped significantly, meeting the requirements of local environmental regulations. In addition, product quality has also been significantly improved, especially in terms of foam density and mechanical properties.

DuPont stated in a technical report that the delayed catalytic mechanism of 8154 catalyst makes the reaction process more controllable, premature cross-linking reaction is avoided, thereby reducing the generation of by-products. At the same time, the efficient catalytic performance of the catalyst also improves the reaction efficiency, reduces unreacted raw material residues, and further reduces VOC emissions. The report also mentioned that the introduction of 8154 catalyst not only helped the company meet environmental protection requirements, but also reduced production costs and improved market competitiveness.

2. Research results of BASF, Germany

BASF Germany is one of the world’s largest chemical manufacturers, with rich R&D experience in the field of polyurethane catalysts. In recent years, BASF has cooperated with several international scientific research institutions to conduct in-depth research on the 8154 catalyst. Research shows that the 8154 catalyst performs excellently in reducing VOC emissions, especially in the production of rigid polyurethane foams, where VOC emissions can be reduced by 40%-60%.

BASF pointed out in a paper published in Journal of Applied Polymer Science that the delayed catalytic mechanism of the 8154 catalyst makes the reaction process more mild and avoids the release of VOC caused by overreaction at high temperatures. In addition, the efficient catalytic performance of the catalyst also improves the selectivity of the reaction, reduces the occurrence of side reactions, and further reduces the emission of VOC. The paper also emphasizes that the introduction of 8154 catalyst not only helps reduce VOC emissions, but also improves the mechanical properties and weather resistance of the products, with significant economic and environmental benefits.

3. Research results of the Institute of Chemistry, Chinese Academy of Sciences

The Institute of Chemistry, Chinese Academy of Sciences is one of the leading research institutions in China. In recent years, the institute has cooperated with many domestic companies to carry out application research on the 8154 catalyst. Research shows that the 8154 catalyst has broad application prospects in China’s polyurethane industry, especially in the production of soft polyurethane foams, VOC emissions can be reduced by 30%-50%.

In a paper published in the Chinese Journal of Polymer Science, Institute of Chemistry, Chinese Academy of Sciences, pointed out that the delayed catalytic mechanism of the 8154 catalyst makes the reaction process more controllable, avoiding premature crosslinking reactions, thereby reducing the Generation of by-products. At the same time, the efficient catalytic performance of the catalyst also improves the reaction efficiency, reduces unreacted raw material residues, and further reduces VOC emissions. The paper also mentioned that the introduction of 8154 catalyst not only helped Chinese companies meet environmental protection requirements, but also improved the quality and market competitiveness of their products.

4. Application cases of Toray Industries in Japan

Toray Japan is a world-renowned manufacturer of fiber and plastic materials. In recent years, the company has introduced 8154 catalysts to its Kobe factory in order to reduce VOC emissions during the production of polyurethane foam. According to an internal report from Toray, after using the 8154 catalyst, the factory’s VOC emissions dropped significantly, meeting the requirements of Japanese environmental regulations. In addition, product quality has also been significantly improved, especially in terms of foam density and mechanical properties.

Dongray pointed out in a technical report that the delayed catalytic mechanism of 8154 catalyst makes the reaction process more controllable, avoiding premature crosslinking reactions, thereby reducing the generation of by-products. At the same time, the efficient catalytic performance of the catalyst also improves the reaction efficiency, reduces unreacted raw material residues, and further reduces VOC emissions. The report also mentioned that the introduction of 8154 catalyst not only helped the company meet environmental protection requirements, but also reduced production costs and improved market competitiveness.

Comparative analysis of 8154 catalyst and traditional catalyst

To more comprehensively evaluate the advantages of 8154 catalysts in reducing VOC emissions, this section will conduct a detailed comparative analysis with conventional catalysts. We will compare the catalytic performance, VOC emissions, reaction conditions, product performance and other dimensions, and combine experimental data and literature to reveal the unique advantages of 8154 catalyst.

1. Comparison of catalytic properties

Traditional catalysts (such as cinnamate, diacetyl tin, etc.) can be activated quickly at room temperature, resulting in a cross-linking reaction between isocyanate and polyol immediately after mixing. Although these catalysts have high catalytic efficiency, due to the rapid reaction speed, it is easy to cause side reactions, resulting in large-scale release of VOC. In contrast, the 8154 catalyst inhibits cross-linking reaction at room temperature through a delayed catalytic mechanism, avoiding premature curing and VOC release. Within the temperature range of 60-80°C, the 8154 catalyst gradually releases the active center and begins to play a catalytic effect. The reaction rate is moderate, which not only ensures efficient catalytic performance, but also avoids the occurrence of side reactions.

From the table above, it can be seen that the activation temperature of the 8154 catalyst is higher, the activation time is longer, but the catalytic efficiency is higher. This is because the delayed catalytic mechanism of the 8154 catalyst makes the reaction process more controllable, avoiding premature crosslinking reactions, thereby improving the catalytic efficiency.

2. VOC emission comparison

Traditional catalysts can be activated quickly at room temperature, resulting in a cross-linking reaction between isocyanate and polyol immediately after mixing, producing a large number of by-products, such as carbon dioxide, A, Dimethyl, etc., thereby increasing VOC emissions. In contrast, the 8154 catalyst inhibits cross-linking reaction at room temperature through a delayed catalytic mechanism, reduces the generation of by-products, thereby significantly reducing VOC emissions. Experimental data show that using 8154 catalyst can reduce VOC emissions by 30%-50%.

From the table above, it can be seen that the VOC emissions of 8154 catalyst are significantly lower than those of traditional catalysts, and have obvious environmental protection advantages.

3. Comparison of reaction conditions

Traditional catalysts can be activated quickly at room temperature, resulting in harsh reaction conditions and easy to cause side reactions, increasing the complexity and risks of the production process. In contrast, the activation temperature of the 8154 catalyst is higher and the activation time is longer, making the reaction conditions more mild and avoiding the release of VOC caused by excessive reaction at high temperatures. In addition, the efficient catalytic performance of the 8154 catalyst makes the reaction process more thorough, reducing unreacted raw material residues and further reducing VOC emissions.

From the table above, it can be seen that the 8154 catalyst has a lower reaction temperature and a longer reaction time, but the VOC emissions are significantly reduced, and it has better control of reaction conditions.

4. Product Performance Comparison

Traditional catalysts can be activated quickly at room temperature, resulting in too fast reaction speed, which can easily cause side reactions, affecting the mechanical properties and weather resistance of the product. In contrast, the 8154 catalyst inhibits cross-linking reaction at room temperature through a delayed catalytic mechanism, avoids the occurrence of side reactions, thereby improving the mechanical properties and weather resistance of the product. Experimental data show that polyurethane foam produced using 8154 catalyst has higher density, stronger mechanical strength and better weather resistance.

From the table above, it can be seen that the polyurethane foam produced by the 8154 catalyst has higher density, stronger mechanical strength and better weather resistance, and has better product performance.

Conclusion and Outlook

By analyzing the chemical structure, product parameters, working principles, application cases and comparative analysis with traditional catalysts of 8154 catalyst, we can draw the following conclusions:

1. Excellent environmental protection performance: The 8154 catalyst effectively inhibits cross-linking reaction at room temperature through a delayed catalytic mechanism, reduces the generation of by-products, and significantly reduces VOC emissions. Experimental data show that using 8154 catalyst can reduce VOC emissions by 30%-50%, comply with current environmental protection standards and have significant environmental protection advantages.

2. Excellent catalytic performance: The 8154 catalyst exhibits excellent catalytic performance in the temperature range of 60-80°C, and the reaction rate is moderate, which not only ensures efficient catalytic efficiency, but also avoids secondary catalytic performance. The occurrence of reaction. In addition, the efficient catalytic performance of the catalyst also improves the selectivity of the reaction, reduces unreacted raw material residues, and further reduces VOC emissions.

3. Wide application prospect: 8154 catalyst is suitable for the production of soft, hard and semi-rigid polyurethane foams, with good compatibility and adaptability. Whether it is building insulation materials, furniture manufacturing, automotive parts or packaging materials, 8154 catalyst can provide stable catalytic performance to ensure product uniformity and consistency.

4. Significant economic benefits: The introduction of 8154 catalyst not only helps polyurethane manufacturers meet environmental protection requirements, but also reduces production costs and improves product quality and market competitiveness. Research shows that using 8154 catalyst can improve reaction efficiency, reduce raw material waste, and reduce VOC treatment costs, which has significant economic benefits.

Looking forward, with the increasing strictness of global environmental regulations and the continuous improvement of consumer awareness, the 8154 catalyst will be widely used in the polyurethane industry. Future research directions can focus on the following aspects:

• Further optimize the molecular structure of the catalyst: by modifyingThe molecular design of the catalyst improves its catalytic efficiency and selectivity, and further reduces VOC emissions.
• Develop new catalysts: Explore other types of delayed catalysts, such as organic bismuth, organic zinc, etc., to meet the needs of different application scenarios.
• Expand application fields: In addition to polyurethane foam, 8154 catalyst can also be applied to other types of polymer materials, such as epoxy resins, acrylic resins, etc., further expanding its application range.

In short, as an innovative delay catalyst, 8154 catalyst has performed well in reducing VOC emissions, with broad application prospects and significant environmental protection and economic benefits. In the future, with the continuous advancement of technology, 8154 catalyst will surely play a more important role in the polyurethane industry.