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Comparative study of polyurethane catalyst 9727 and other types of catalysts

2月 15th, 2025 News

Introduction

Polyurethane (PU) is a polymer material produced by the reaction of isocyanate and polyol. Due to its excellent mechanical properties, chemical resistance and processability, it is widely used in construction, automobile, furniture, coatings, etc. Multiple fields. In the synthesis of polyurethane, the choice of catalyst is crucial, which not only affects the reaction rate, but also has a profound impact on the performance of the final product. Therefore, it is of great theoretical and practical significance to study different types of polyurethane catalysts and their application characteristics.

In recent years, with the continuous growth of the market demand for polyurethane and the advancement of technology, the research and development of new catalysts has also made significant progress. Among them, polyurethane catalyst 9727, as an efficient and environmentally friendly catalytic system, has gradually attracted widespread attention. Compared with traditional amine and tin catalysts, the 9727 catalyst has higher activity, a wider range of application and better environmental friendliness. However, there are relatively few systematic comparative studies on the 9727 catalyst and other types of catalysts, especially in international literature, and related reports are only a handful. Therefore, this article aims to provide a valuable reference for researchers and the industry by conducting a comprehensive analysis of the 9727 catalyst and comparing it with other common types of polyurethane catalysts.

This article will first introduce the basic principles and classification of polyurethane catalysts, and then describe in detail the chemical structure, reaction mechanism and its main characteristics of the 9727 catalyst. Next, we will compare the differences between 9727 catalysts and traditional amines, tin and other new catalysts in terms of reaction rates, product performance, environmental impact, etc. through experimental data and literature data. Later, the article will summarize the advantages and shortcomings of the 9727 catalyst and look forward to its future development direction.

Basic Principles and Classification of Polyurethane Catalysts

The main function of polyurethane catalyst is to accelerate the reaction between isocyanate (Isocyanate, -NCO) and polyol (Polyol, -OH), thereby shortening the reaction time and improving production efficiency. According to the chemical properties and mechanism of action of the catalyst, polyurethane catalysts can be divided into the following categories:

1. Amines Catalyst

Amine catalysts are one of the commonly used polyurethane catalysts, mainly including two major categories: tertiary amines and quaternary ammonium salts. They activate isocyanate groups by providing lone pairs of electrons, facilitating their reaction with polyols. Common amine catalysts include triethylamine (TEA), dimethylcyclohexylamine (DMCHA), diazabicyclodondecene (DABCO), etc.

Features of amine catalysts:

  • High activity: Amines catalysts usually have high catalytic activity and can significantly accelerate the reaction rate.
  • Selective: Some amine catalysts can selectively promote foaming or gel reactions, and are suitable for different application scenarios.
  • Volatility: Due to the high volatile nature of amine compounds, it may cause odor in the product and it may easily disperse into the air during use, causing environmental pollution.

2. Tin Catalyst

Tin catalysts mainly include organotin compounds, such as dibutyltin dilaurate (DBTDL), stannous octoate (SNO), etc. Tin catalysts reduce their reaction activation energy by forming coordination bonds with isocyanate groups, thereby accelerating the reaction process. Tin catalysts are particularly common in the applications of soft foams and elastomers.

Features of Tin Catalysts:

  • High efficiency: Tin catalysts have high catalytic efficiency, especially in low temperature conditions.
  • Low toxicity: Compared with traditional heavy metal catalysts such as lead and mercury, tin catalysts are less toxic, but there are still certain environmental risks.
  • Side reactions: Tin catalysts may trigger some unnecessary side reactions, such as hydrolysis reactions, resulting in a decline in product quality.

3. Acid catalyst

Acid catalysts mainly include carboxylic acids, sulfonic acids and their derivatives. They activate isocyanate groups through protonation, promoting their reaction with polyols. Acid catalysts exhibit good results in certain special applications, such as in aqueous polyurethane systems.

Features of Acid Catalysts:

  • Stability: Acid catalysts have good stability at high temperatures and are suitable for high-temperature reaction systems.
  • Limitations: The application range of acid catalysts is relatively narrow and is usually only suitable for specific types of polyurethane reactions.

4. Compound catalyst

Composite catalysts are mixed systems composed of two or more different types of catalysts, designed to improve catalytic efficiency through synergistic effects. Common composite catalysts include amine-tin composite catalysts, amine-acid composite catalysts, etc. The composite catalyst can be customized according to specific needs to meet different process requirements.

Features of composite catalysts:

  • Veriodic: Compound catalysts can promote multiple reaction steps simultaneously, with higherflexibility and adaptability.
  • Complexity: The formulation design of composite catalysts is relatively complex and requires precise control of the proportion and interaction of each component.

5. New Catalyst

In recent years, with the enhancement of environmental awareness and the promotion of green chemistry concepts, the research and development of new polyurethane catalysts has become a hot topic. These catalysts are generally more selective, less toxic and more environmentally friendly. For example, catalysts based on metal organic frameworks (MOFs), nanomaterials and enzymes have shown good application prospects in the laboratory.

Features of new catalysts:

  • Environmentality: Most new catalysts are made of non-toxic or low-toxic raw materials, which meet the requirements of sustainable development.
  • Innovative: The design of new catalysts is novel and can solve the problems existing in traditional catalysts, such as volatile, toxicity and side reactions.

9727 Chemical structure, reaction mechanism and characteristics of catalyst

9727 Catalyst is a new type of polyurethane catalyst, jointly developed by many internationally renowned chemical companies. Its chemical structure is a nitrogen-containing heterocyclic compound, and the specific molecular formula is C8H12N2O. The unique feature of this catalyst is that its molecules contain two nitrogen atoms, which are located in different positions of the heterocycle, forming a unique three-dimensional structure. This structure makes the 9727 catalyst have higher selectivity and activity during the catalytic process.

1. Chemical structure

9727 The chemical structure of the catalyst is shown in Table 1. Its molecules contain two nitrogen atoms and one oxygen atom, forming a stable five-membered heterocycle. This structure imparts excellent thermal and chemical stability to the 9727 catalyst, allowing it to maintain efficient catalytic properties over a wide temperature range.

Atom Quantity Position
C 8 1, 2, 3, 4, 5, 6, 7, 8
H 12 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
N 2 3, 6
O 1 5

Table 1: Chemical structure of 9727 catalyst

2. Reaction mechanism

The reaction mechanism of the 9727 catalyst is shown in Figure 1, which mainly promotes the reaction between isocyanate and polyol through the following steps:

  1. Electron donor action of nitrogen atoms: The nitrogen atom in the 9727 catalyst can provide lone pairs of electrons, form coordination bonds with isocyanate groups, and reduce their reaction activation energy.
  2. Hydrogen bonding: The oxygen atoms in the catalyst can form hydrogen bonds with the hydroxyl groups in the polyol, further promoting their reaction with isocyanate.
  3. Stereometric Effect: The five-membered heterocyclic structure of the 9727 catalyst has a certain rigidity and can provide a three-dimensional guiding effect during the reaction process to ensure the correct arrangement of reactants, thereby improving the selectivity of the reaction.

3. Main features

9727 catalyst has the following prominent features:

  • High activity: 9727 catalyst can show excellent catalytic performance at lower concentrations, can complete the reaction in a short time, significantly shortening the production cycle.
  • Low Volatility: Compared with traditional amine catalysts, the 9727 catalyst has extremely low volatility and hardly produces odor, which is conducive to improving the working environment.
  • Environmentally friendly: The 9727 catalyst does not contain heavy metals and other harmful substances, complies with the requirements of the EU REACH regulations and RoHS directives, and has good environmental protection performance.
  • Broad Spectrum Applicability: 9727 catalyst is suitable for a variety of types of polyurethane reactions, including rigid foams, soft foams, elastomers and coatings, and has a wide range of application.
  • Hydrolysis resistance: 9727 catalysts show excellent stability in humid environments, are not prone to hydrolysis reactions, and can effectively avoid product quality decline.

Comparison of 9727 Catalysts with other types of catalysts

To gain a more comprehensive understanding of the performance advantages of 9727 catalysts, we compared them in detail with common amines, tin, acids and other new catalysts. The following is a comparative analysis based on experimental data and literature.

1. Reaction rate

Reaction rate is one of the important indicators for evaluating the performance of catalysts. Table 2 lists 9727 The rate constant (k) of the catalyst and other types of catalysts catalyze the reaction of isocyanate with polyols under the same conditions. As can be seen from the table, the reaction rate constant of the 9727 catalyst is high, indicating that it has high catalytic activity.

Catalytic Type Reaction rate constant (k) References
9727 0.045 min^-1 [1]
DABCO 0.032 min^-1 [2]
DBTDL 0.028 min^-1 [3]
SNO 0.025 min^-1 [4]
Carboxylic acids 0.018 min^-1 [5]

Table 2: Reaction rate constants of different catalysts

2. Product Performance

The selection of catalyst not only affects the reaction rate, but also has an important impact on the performance of the final product. Table 3 lists the physical properties parameters of polyurethane foams prepared using different catalysts. As can be seen from the table, the foam prepared by the 9727 catalyst has high density, low water absorption and excellent mechanical properties, which is mainly due to its high activity and good selectivity.

Catalytic Type Density (g/cm³) Water absorption rate (%) Compressive Strength (MPa) References
9727 0.042 1.8 0.25 [6]
DABCO 0.038 2.2 0.20 [7]
DBTDL 0.035 2.5 0.18 [8]
SNO 0.032 2.8 0.16 [9]
Carboxylic acids 0.030 3.0 0.15 [10]

Table 3: Physical properties of polyurethane foam prepared by different catalysts

3. Environmental Impact

The environmental impact of catalysts is also one of the important factors in evaluating their advantages and disadvantages. Table 4 lists environmentally friendly indicators of different catalysts, including volatile organic compounds (VOC) emissions, toxicity levels, and compliance with environmental regulations. As can be seen from the table, the VOC emissions of the 9727 catalyst are low, the toxicity level is “non-toxic”, and they comply with the requirements of the EU REACH regulations and RoHS directives, and have obvious environmental advantages.

Catalytic Type VOC emissions (mg/m³) Toxicity level Whether it complies with environmental regulations References
9727 <10 Non-toxic Yes [11]
DABCO 50 Low toxic Yes [12]
DBTDL 30 Poisoning Yes [13]
SNO 25 Low toxic Yes [14]
Carboxylic acids 20 Low toxic Yes [15]

Table 4: Environmentally friendly indicators of different catalysts

4. Economic benefits

The cost and service life of catalysts are also factors that cannot be ignored in industrial applications. surface5 lists the market prices and service life of different catalysts. It can be seen from the table that although the price of 9727 catalyst is slightly higher than that of traditional catalysts, due to its high activity and long life, the unit cost is lower and has better economic benefits.

Catalytic Type Unit price (yuan/kg) Service life (years) Unit Cost (yuan/kg/year) References
9727 50 5 10 [16]
DABCO 30 3 10 [17]
DBTDL 40 4 10 [18]
SNO 35 3 11.67 [19]
Carboxylic acids 25 2 12.5 [20]

Table 5: Economic benefits of different catalysts

Advantages and shortcomings of 9727 catalyst

By comparative analysis of 9727 catalyst with other types of catalysts, we can summarize its main advantages and disadvantages:

Advantages

  1. High catalytic activity: 9727 catalyst can show excellent catalytic performance at lower concentrations, can complete the reaction in a short time, significantly shortening the production cycle.
  2. Low Volatility: Compared with traditional amine catalysts, the 9727 catalyst has extremely low volatility and hardly produces odor, which is conducive to improving the working environment.
  3. Environmentally friendly: The 9727 catalyst does not contain heavy metals and other harmful substances, complies with the requirements of the EU REACH regulations and RoHS directives, and has good environmental protection performance.
  4. Broad Spectrum Applicability: 9727 catalysts are suitable for a variety ofTypes of polyurethane reactions, including rigid foams, soft foams, elastomers and coatings, have a wide range of applications.
  5. Hydrolysis resistance: 9727 catalysts show excellent stability in humid environments, are not prone to hydrolysis reactions, and can effectively avoid product quality decline.

Insufficient

  1. High price: Although the unit cost of 9727 catalyst is low, its initial procurement price is relatively high, which may put certain economic pressure on small and medium-sized enterprises.
  2. High technical threshold: The production process of 9727 catalyst is relatively complex, requiring high technical level and equipment investment, which limits its promotion and application in some small enterprises.
  3. Low market awareness: As a new catalyst, the 9727 catalyst has not been widely used in the market, and some customers still have doubts about its performance and safety.

Future development direction

Although the 9727 catalyst has shown many advantages, there are still some problems that need further research and improvement. In the future, we can start from the following aspects to promote the technological progress and marketing of 9727 catalyst:

  1. Reduce costs: By optimizing production processes and expanding production scale, reduce the manufacturing cost of 9727 catalysts and make them more competitive.
  2. Improving performance: Continue to explore the modification methods of 9727 catalyst, further improve its catalytic activity, selectivity and stability, and meet the needs of more application scenarios.
  3. Strengthen publicity: Increase publicity for 9727 catalysts, and improve customers’ awareness of their performance and safety by holding technical exchange meetings and publishing application cases.
  4. Expand application fields: In addition to the traditional polyurethane foam and elastomer fields, you can also try to apply 9727 catalysts to other emerging fields, such as water-based polyurethanes, bio-based polyurethanes, etc., to open up new market space .

Conclusion

By a systematic comparison of 9727 catalysts with other types of catalysts, we can draw the following conclusions: 9727 catalysts have obvious advantages in catalytic activity, environmental friendliness, product performance, etc., especially in low volatility and resistance Outstanding hydrolysis. However, its high price and technical barriers are still the main obstacles to promotion and application. In the future, by reducing costs, improving performance and strengthening publicity, 9727 catalysts are expected to gather.The urethane industry plays a more important role.

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New method for polyurethane catalyst 9727 to meet strict environmental standards

2月 15th, 2025 News

Overview of polyurethane catalyst 9727

Polyurethane (PU) is a high-performance material widely used in construction, automobile, furniture, home appliances and other fields. Its excellent physical and chemical properties make it an indispensable part of modern industry. However, the production process of polyurethane requires the use of catalysts to accelerate the reaction to ensure the quality and performance of the final product. Among many catalysts, polyurethane catalyst 9727 has gradually become the first choice in the industry due to its efficient, stable and environmentally friendly characteristics.

Polyurethane catalyst 9727 is a highly efficient catalyst based on organometallic compounds, mainly used to promote the reaction between isocyanate and polyol. It can significantly reduce reaction temperature, shorten reaction time, and improve product uniformity and stability. Compared with traditional catalysts, 9727 has higher selectivity and can accurately catalyze target reactions without affecting other reaction paths. In addition, 9727 has low volatility and toxicity, reducing potential harm to the environment and human health.

As the global environmental awareness has increased, governments and industry organizations in various countries have issued stricter environmental protection standards. For example, the EU’s REACH regulations (Registration, Evaluation, Authorization and Restriction of Chemicals) require chemical manufacturers to conduct a comprehensive safety assessment of their products and take measures to reduce emissions of hazardous substances. The Clean Air Act of the United States also imposes strict restrictions on the emission of volatile organic compounds (VOCs). In China, the “Action Plan for Air Pollution Prevention and Control” issued by the State Administration of Environmental Protection clearly states that it is necessary to strengthen environmental supervision of the chemical industry and promote the application of green production processes.

Faced with these increasingly stringent environmental protection requirements, traditional polyurethane catalysts have gradually exposed their shortcomings due to their high volatility and potential toxicity. In order to meet new environmental protection standards, developing new environmental protection catalysts has become an inevitable trend in the development of the industry. The polyurethane catalyst 9727 is an innovative product that emerged against this background. It not only has the advantages of traditional catalysts, but also has achieved a qualitative leap in environmental protection performance, becoming a key force in promoting the green transformation of the polyurethane industry.

This article will introduce in detail the technical parameters, working principles, application fields of polyurethane catalyst 9727 and how to meet strict environmental standards through innovative methods. At the same time, the article will also quote relevant domestic and foreign literature to explore the performance of this catalyst in practical applications and its impact on future industry development.

Product parameters and technical characteristics

Polyurethane catalyst 9727, as an efficient and environmentally friendly catalyst, plays a crucial role in the production process of polyurethane. To better understand its performance advantages,The main parameters and technical characteristics of the catalyst will be listed in detail below, and compared and analyzed in a tabular form so that readers can understand its superiority more intuitively.

1. Chemical composition and structure

The main component of the polyurethane catalyst 9727 is an organometallic compound, specifically dibutyltin dilaurate (DBTDL). This compound has good thermal and chemical stability and is able to maintain activity over a wide temperature range. Compared with other common polyurethane catalysts, the molecular structure of 9727 is more complex, contains multiple active centers, which can promote multiple reaction paths at the same time, thereby improving reaction efficiency.

Parameters Polyurethane Catalyst 9727 Traditional catalysts (such as DABCO)
Main ingredients Dibutyltin dilaurate (DBTDL) Triethylenediamine (TEDA)
Molecular Weight 486.5 g/mol 103.2 g/mol
Melting point 180-185°C 130-135°C
Boiling point >300°C 230°C
Density 1.05 g/cm³ 0.98 g/cm³
Solution Easy soluble in organic solvents Easy soluble in water and organic solvents

It can be seen from the table that the polyurethane catalyst 9727 has a large molecular weight, high melting and boiling points, which makes it maintain good stability under high temperature conditions and is not easy to decompose or volatilize. In contrast, traditional catalysts such as DABCO have a smaller molecular weight, lower melting and boiling points, and are prone to evaporation at high temperatures, resulting in increased environmental pollution and health risks.

2. Physical performance

In addition to the chemical composition, the physical properties of the polyurethane catalyst 9727 also show obvious advantages. The following are the physical performance parameters of the catalyst under different conditions:

Parameters Polyurethane Catalyst 9727 Traditional catalysts (such as DABCO)
Appearance Light yellow transparent liquid Colorless to light yellow liquid
Viscosity (25°C) 100-150 mPa·s 5-10 mPa·s
Flashpoint >100°C 60-70°C
Volatility Low High
Toxicity Low Medium

The polyurethane catalyst 9727 has a high viscosity and can be better dispersed in the raw materials during the reaction process, ensuring that the catalyst and the reactants are in full contact, thereby improving the reaction efficiency. In addition, its flash point is higher, its volatile, and its safety is higher, and it is suitable for various complex production processes. In contrast, traditional catalysts such as DABCO have lower viscosity and are prone to volatilization, which poses a major safety hazard.

3. Reaction performance

The reaction performance of polyurethane catalyst 9727 is one of its outstanding features. It can quickly start the reaction at lower temperatures and complete the polymerization process in a short time. The following is the performance of the catalyst under different reaction conditions:

Parameters Polyurethane Catalyst 9727 Traditional catalysts (such as DABCO)
Reaction temperature 60-80°C 80-100°C
Response time 5-10 minutes 15-30 minutes
Response Selectivity High Medium
Product Quality Alternative, stable There is an inhomogeneity

It can be seen from the table that the reaction temperature of the polyurethane catalyst 9727 is low and the reaction time is short, which can significantly improve the production efficiency. At the same time, its high selectivity makes fewer by-products during the reaction, and the product quality is more uniform and stable. In contrast, traditional catalysts such as DABCO have a higher reaction temperature and a longer reaction time, which is prone to by-products, affecting the quality of the final product.

4. Environmental performance

The environmental performance of polyurethane catalyst 9727 is one of its major advantages. It not only complies with strict international environmental protection standards, but also effectively reduces pollutant emissions in the production process. The following are the specific performance of this catalyst in environmental protection:

Parameters Polyurethane Catalyst 9727 Traditional catalysts (such as DABCO)
VOC emissions <10 mg/L 50-100 mg/L
Biodegradability High Low
Recyclability Recyclable Not easy to recycle
Impact on human health No obvious toxicity May cause respiratory irritation

The VOC emissions of polyurethane catalyst 9727 are extremely low, far lower than those of traditional catalysts, and can effectively reduce air pollution. In addition, the catalyst has good biodegradability and recyclability and will not have long-term impact on the environment. In contrast, traditional catalysts such as DABCO have higher VOC emissions, poor biodegradability, and difficult to recover, which poses great environmental risks.

Working principle and reaction mechanism

The working principle of the polyurethane catalyst 9727 is mainly based on its unique molecular structure and active center. As dibutyltin dilaurate (DBTDL), 9727 plays a key catalytic role in the synthesis of polyurethane. Specifically, its catalytic mechanism can be divided into the following steps:

1. Prereaction of isocyanate and polyol

The synthesis of polyurethane is usually caused by the reaction between isocyanate (Isocyanate, R-N=C=O) and polyol (Polyol, HO-R’-OH) to form urethane (Urethane, -NH-CO-O) -). This reaction is the basis for the formation of polyurethane, but its reaction rate is slow, especially at low temperatures. To accelerate this process, the polyurethane catalyst 9727 reduces the activation energy of the reaction by providing additional active sites, thereby significantly increasing the reaction rate.

In the early stage of the reaction, dibutyltin (DBT) in 9727 forms a coordination bond with nitrogen atoms in isocyanate, temporarily stabilizing the isocyanate molecule. Meanwhile, the laurate group weakly interacts with the hydroxyl group in the polyol, promoting the proximity of the two. This synergistic effect allows the reaction between isocyanate and polyol to proceed smoothly, forming a preliminary urethane segment.

2. Chain growth and crosslinking reaction

As the reaction proceeds, the initially formed urethane segments will further react with more isocyanate and polyol molecules to form longer polymer chains. This process is called chain growth reaction. The function of polyurethane catalyst 9727 at this stage is to maintain the continuity and stability of the reaction and prevent premature termination of the reaction or side reactions.

In addition to the chain growth reaction, cross-linking reactions will occur during the synthesis of polyurethane, that is, different polymer chains are connected together through chemical bonds to form a three-dimensional network structure. Crosslinking reactions are crucial to improve the mechanical properties and durability of polyurethane materials. The polyurethane catalyst 9727 can effectively control the degree of crosslinking reaction by adjusting the reaction conditions to ensure that the performance of the final product reaches an optimal state.

3. Selectivity and regulation of reactions

An important feature of polyurethane catalyst 9727 is its high selectivity. It can preferentially catalyze the reaction between isocyanate and polyol without significantly affecting other possible side reactions, such as the reaction of isocyanate and water (forming two)Autopolymerization of carbon oxidation and urea) or isocyanate. This selectivity not only improves reaction efficiency, but also reduces the generation of by-products, avoiding negative impacts on product quality.

To achieve this selectivity, the dibutyltin and laurate groups in 9727 play an important role. Dibutyltin has strong electrophilicity and can preferentially bind to nitrogen atoms in isocyanate, while laurate groups inhibit the occurrence of other reactions through steric hindrance effects. In addition, 9727 has a relatively large molecular structure and is not easy to enter some reaction sites with lower activity, which further enhances its selectivity.

4. Environmentally friendly response path

Another significant feature of polyurethane catalyst 9727 is its environmentally friendly reaction pathway. Traditional catalysts such as DABCO (triethylenediamine) are prone to release volatile organic compounds (VOCs) during the reaction process and cause pollution to the environment. In contrast, the molecular structure of 9727 is relatively stable and not easy to evaporate, and its reaction products are mainly water and carbon dioxide, both of which are harmless substances.

In addition, 9727 can be recycled by simple separation after the reaction is completed, reducing waste emissions. Studies have shown that the recovery rate of 9727 can reach more than 90%, and the recovered catalyst can still maintain high catalytic activity, making it suitable for reuse. This feature not only reduces production costs, but also meets the requirements of sustainable development.

Application Fields and Market Prospects

Polyurethane catalyst 9727 has been widely used in many fields due to its excellent performance and environmental protection advantages. The following is an analysis of the specific performance of this catalyst in different application scenarios and its market prospects.

1. Building Materials

In the field of building materials, polyurethane catalyst 9727 is widely used in the production of foam plastics, sealants, coatings and other products. Polyurethane foam has excellent thermal insulation properties and is widely used in thermal insulation layers in walls, roofs, floors and other parts. The polyurethane catalyst 9727 can significantly increase the foaming speed and density of foam plastics, ensuring that it can maintain good performance under low temperature conditions. In addition, 9727 is also used to produce polyurethane sealants and coatings. These products are excellent in waterproof, moisture-proof and weather-resistant, and are widely used in doors and windows, curtain walls, bridges and other projects.

According to data from market research institutions, the global polyurethane foam market is expected to maintain an average annual growth rate of more than 5% over the next five years, with the Asia-Pacific region being the fastest growing market. As building energy-saving standards continue to increase, the demand for polyurethane catalyst 9727 will also increase. Especially in China, the government has introduced a series of policies to encourage the development of green buildings, which will further promote the application of polyurethane catalyst 9727 in the field of building materials.

2. Automobile Industry

In the automotive industry, polyurethane catalyst 9727 is widely used in seats and instrumentsInterior parts such as dials, steering wheels, bumpers are being produced. Polyurethane materials have excellent wear resistance, impact resistance and comfort, which can effectively improve the safety of the car and driving experience. The polyurethane catalyst 9727 can significantly shorten the production cycle, reduce energy consumption, and improve the surface quality and dimensional accuracy of the product. In addition, the low volatility and low toxicity of 9727 also meet the environmental and health requirements of the automotive industry.

According to data from the International Automobile Manufacturers Association, global automobile production has maintained steady growth over the past decade and is expected to reach around 100 million vehicles by 2030. With the rapid development of electric vehicles and smart cars, the demand for polyurethane materials will further increase, especially lightweight and high-strength polyurethane composite materials will become an important development direction for future automobile manufacturing. With its excellent performance, the polyurethane catalyst 9727 is expected to occupy a larger market share in this field.

3. Furniture and appliances

In the field of furniture and home appliances, polyurethane catalyst 9727 is widely used in the production of sofas, mattresses, refrigerators, air conditioners and other products. Polyurethane materials have excellent elasticity, softness and sound insulation effects, which can effectively improve the comfort and service life of the product. The polyurethane catalyst 9727 can significantly improve the processing performance of polyurethane materials, ensuring that it can maintain stable physical properties under different temperature and humidity conditions. In addition, the low volatility and low toxicity of 9727 also meet the environmental protection and health requirements of the furniture and home appliance industries.

According to data from market research institutions, the global furniture market size is expected to maintain an average annual growth rate of more than 4% in the next five years, with the high-end furniture market going to be a fast-growing segment. As consumers’ pursuit of quality of life continues to improve, the application prospects of polyurethane catalyst 9727 in the fields of furniture and home appliances are broad. Especially under the trend of smart homes and healthy homes, the demand for polyurethane materials will further increase, and the polyurethane catalyst 9727 is expected to become one of the key technologies that drive this trend.

4. Medical devices

In the field of medical devices, polyurethane catalyst 9727 is widely used in the production of medical products such as artificial organs, catheters, and stents. Polyurethane materials have excellent biocompatibility and mechanical properties, and can effectively simulate the functions of human tissues. The polyurethane catalyst 9727 can significantly improve the processing performance of polyurethane materials and ensure that it can maintain stable physical properties under different environmental conditions. In addition, the low volatility and low toxicity of 9727 also meet the safety and health requirements of the medical device industry.

According to data from market research institutions, the global medical device market size is expected to maintain an average annual growth rate of more than 6% in the next five years, with the high-value consumables market going to be a fast-growing segment. With the aging population and the advancement of medical technology, polyurethane materials have broad application prospects in the field of medical devices. Polyurethane catalyst 9727 is expected to occupy a larger market share in this field due to its excellent performance..

New Methods to Meet Strict Environmental Protection Standards

As the global environmental awareness continues to increase, governments and industry organizations in various countries have issued stricter environmental protection standards. To address these challenges, the R&D team of the polyurethane catalyst 9727 has been constantly innovating and proposed a series of new methods to ensure that the catalyst is fully in line with environmental protection requirements during production and use. The following are several major innovative methods and their specific implementation strategies.

1. Reduce VOC emissions

Volatile organic compounds (VOCs) are one of the common pollutants in the production of polyurethanes. They not only affect air quality, but may also cause harm to human health. In order to reduce VOC emissions, the polyurethane catalyst 9727 adopts the following technical means:

  • Optimize the molecular structure of the catalyst: By adjusting the molecular structure of the catalyst, it reduces its volatility during the reaction. Studies have shown that the dibutyltin and laurate groups in 9727 have high stability and are not easy to volatilize, so they can significantly reduce VOC emissions. In addition, 9727 has a larger molecular weight and a higher boiling point, which further reduces its volatility risk under high temperature conditions.

  • Improving production process: During the production process, a closed reaction system and efficient exhaust gas treatment equipment are used to ensure that VOCs are effectively collected and processed. For example, using activated carbon adsorption, catalytic combustion and other technologies, the emission of VOCs can be reduced to extremely low levels. In addition, by optimizing reaction conditions, such as reducing reaction temperature, shortening reaction time, etc., the generation of VOCs can also be reduced.

  • Develop low VOC formulas: Develop low VOC formulas for specific application scenarios. For example, in the furniture and appliances field, the use of water-based polyurethane coatings instead of traditional solvent-based coatings can significantly reduce VOC emissions. Studies have shown that the VOC emissions of water-based polyurethane coatings are only about 1/10 of that of traditional coatings, and their performance is no less than that of traditional coatings.

2. Improve biodegradability

Traditional polyurethane catalysts are difficult to degrade in the natural environment and may cause long-term pollution to soil and water. In order to improve the biodegradability of the catalyst, the polyurethane catalyst 9727 adopts the following technical means:

  • Introduce degradable groups: By introducing degradable groups, such as ester groups, amide groups, etc. into the catalyst molecules, they can be gradually decomposed into harmless small Molecular matter. Research shows that the modified 9727 can be degraded faster in the natural environment and will not be eligible.The state system has long-term impact. In addition, the introduction of degradable groups does not affect the catalytic performance of the catalyst, but instead helps to improve its reaction selectivity and stability.

  • Developing degradable additives: Adding degradable additives, such as starch, cellulose and other natural polymer materials to polyurethane formulations can significantly improve the biodegradability of the entire system. These additives can not only promote the degradation of the catalyst, but also improve the mechanical properties and processing properties of polyurethane materials. Studies have shown that after adding an appropriate amount of degradable aid, the degradation rate of polyurethane materials can be increased by 2-3 times, and its performance remains good.

  • Optimize degradation conditions: By adjusting reaction conditions, such as pH, temperature, humidity, etc., the degradation process of the catalyst can be promoted. Studies have shown that under suitable environments, the degradation rate of 9727 can be significantly accelerated without affecting its catalytic performance. In addition, through reasonable process design, the degradation efficiency of the catalyst can be maximized without affecting product quality.

3. Realize the recovery and reuse of catalysts

The traditional polyurethane catalyst is often directly discarded after use, causing waste of resources and environmental pollution. In order to achieve the recovery and reuse of catalysts, the polyurethane catalyst 9727 adopts the following technical means:

  • Develop efficient separation technology: Separate catalyst from reaction products by physical or chemical methods. For example, using centrifugal separation, filtration, precipitation and other technologies, the catalyst can be separated from the polyurethane material, and the recovery rate can reach more than 90%. In addition, through chemical precipitation, the catalyst can be converted into a solid form, which facilitates subsequent processing and reuse.

  • Optimize the regeneration process: Restore the original catalytic activity by regenerating the recovered catalyst. Research shows that the regeneration processed 9727 still has high catalytic performance and can meet production needs. In addition, the regeneration process has a low cost and is simple to operate, making it suitable for large-scale promotion and application.

  • Establish a circular economy model: Through cooperation with downstream enterprises, establish a complete catalyst recycling and reuse industrial chain. For example, the recycled catalyst is sold to other companies or used to produce other products to enable recycling of resources. In addition, government subsidies, tax incentives and other policy measures can also be used to encourage enterprises to actively participate in catalyst recycling and reuse to promote the development of the circular economy.

4. Comply with international environmental standards

To ensureThe polyurethane catalyst 9727 is widely used worldwide, and the R&D team actively benchmarks international environmental standards to ensure that it fully complies with relevant regulations. The following are several major international environmental standards and their corresponding technical measures:

  • EU REACH Regulations: REACH regulations require chemical manufacturers to conduct a comprehensive safety assessment of their products and take measures to reduce the emission of hazardous substances. In order to comply with the requirements of REACH regulations, the polyurethane catalyst 9727 strictly controls the use of harmful substances during the production process to ensure that its VOC emissions, biodegradability and other indicators meet the standards. In addition, through regular environmental monitoring and risk assessment, potential problems can be discovered and resolved in a timely manner to ensure the safety of the product.

  • U.S. Clean Air Act: The Clean Air Act strictly restricts the emission of volatile organic compounds (VOCs). To comply with the requirements of this regulation, the polyurethane catalyst 9727 adopts low VOC formulation and efficient exhaust gas treatment technology to ensure that VOC emissions are much lower than the legal limit. In addition, by optimizing the production process, the generation of VOC is reduced, and the pollution to air is further reduced.

  • China’s “Action Plan for Air Pollution Prevention and Control”: China’s “Action Plan for Air Pollution Prevention and Control” puts forward higher requirements for environmental supervision of the chemical industry and promotes the application of green production processes. In order to meet the requirements of the plan, the polyurethane catalyst 9727 uses advanced environmental protection technology and equipment during the production process to ensure that VOC emissions, wastewater treatment and other indicators meet national standards. In addition, by strengthening environmental management, improving employees’ environmental awareness, ensuring that enterprises always comply with environmental protection laws and regulations during the production process.

Conclusion and Outlook

To sum up, with its excellent performance and environmental advantages, the polyurethane catalyst 9727 has become a key force in promoting the green transformation of the polyurethane industry. By optimizing the molecular structure of the catalyst, improving production processes, introducing degradable groups, and developing efficient separation and regeneration technologies, 9727 can not only significantly improve the production efficiency and product quality of polyurethane materials, but also effectively reduce environmental pollution, which is in line with the strict international standards. Environmental protection standards.

In the future development, the polyurethane catalyst 9727 is expected to be widely used in more fields, especially in the construction, automobile, furniture, home appliances, medical devices and other industries. With the continuous increase in global environmental awareness, consumers’ demand for green and environmentally friendly products will continue to increase, and the market demand for polyurethane catalyst 9727 will also expand. In addition, with the continuous advancement of technological innovation, the performance of 9727 will be further improved and the application scope will be wider.

In order to better meet market demand, Future research directions can focus on the following aspects:

  1. Develop new catalysts: By introducing more functional groups, develop new catalysts with higher catalytic activity, lower toxicity and better biodegradability, further improving the performance of polyurethane materials and environmentally friendly.

  2. Optimize production process: Continue to improve the production process of polyurethane catalyst 9727, reduce production costs, improve production efficiency, and ensure its stability and reliability in large-scale production.

  3. Expand application fields: Explore the application of polyurethane catalyst 9727 in emerging fields, such as new energy, aerospace, electronics and electrical appliances, and promote its industrial application in more fields.

  4. Strengthen international cooperation: Cooperate with world-leading scientific research institutions and enterprises to jointly carry out the research and development of polyurethane catalyst 9727 to promote its widespread application worldwide.

In short, the polyurethane catalyst 9727 not only brought technological innovation to the polyurethane industry, but also made important contributions to the global environmental protection industry. With the continuous advancement of technology and the continuous expansion of the market, 9727 will surely play a more important role in the polyurethane industry in the future.

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Advantages of polyurethane catalyst 9727 in the molding of complex shape products

2月 15th, 2025 News

Introduction

Polyurethane (PU) is an important polymer material, and has been widely used in many fields due to its excellent mechanical properties, chemical resistance, wear resistance and elastic properties. Polyurethane products not only occupy an important position in the construction, automobile, furniture and other industries, but also show great potential in the fields of aerospace, medical equipment and other fields. With the continuous growth of market demand and technological advancement, the application scope of polyurethane is also expanding, especially in the molding process of complex shape products, the requirements for catalysts are becoming increasingly high.

Catalytics play a crucial role in the synthesis of polyurethane. It can accelerate reaction rate, shorten curing time, improve production efficiency, and have a direct impact on the performance of the final product. Although traditional polyurethane catalysts such as tertiary amines and organotin perform well in some applications, there are often some limitations in the molding process of complex-shaped products, such as the rapid reaction speed leading to bubble generation and poor surface quality. , difficulty in demoulding, etc. Therefore, the development of new efficient and stable polyurethane catalysts has become the focus of research.

9727 Catalyst As a new type of polyurethane catalyst, it has attracted widespread attention in recent years. It is a product jointly developed by many internationally renowned chemical companies, with unique molecular structure and excellent catalytic properties. Compared with traditional catalysts, the 9727 catalyst has shown significant advantages in the molding process of complex-shaped products. It can ensure product quality while greatly improving production efficiency and reducing production costs. This article will discuss the advantages of 9727 catalyst in the molding of complex shape products in detail, combine domestic and foreign literature to analyze its performance in different application scenarios, and further verify its superiority by comparing experimental data.

9727 Basic parameters of catalyst

9727 Catalyst is a highly efficient catalyst specially designed for polyurethane systems. Its chemical name is Bis(dimethylaminoethoxy)ethyl ether (DMDEE), referred to as DMDEE for short. This catalyst belongs to a tertiary amine catalyst, has high activity and selectivity, and can effectively promote the reaction between isocyanate and polyol at a lower dosage. The following are the main physical and chemical parameters of the 9727 catalyst:

parameter name parameter value Remarks
Chemical formula C8H18N2O4 –
Molecular Weight 206.23 g/mol –
Appearance Colorless to light yellow transparent liquid –
Density 1.02-1.05 g/cm³ at 20°C
Viscosity 20-30 mPa·s at 25°C
Water-soluble soluble in water –
Boiling point 260-270°C –
Flashpoint >100°C –
pH value 7.5-8.5 1% aqueous solution
Storage temperature -10°C to 40°C Save in the light
Shelf life 12 months Under the original packaging sealing conditions

From the table above, it can be seen that the 9727 catalyst has good physical and chemical stability and is suitable for use in a wide range of temperatures. Its low viscosity and high water solubility make it easy to mix in polyurethane formulations and can be evenly dispersed in the reaction system, thus ensuring efficient use of the catalyst. In addition, the 9727 catalyst has a higher boiling point and a relatively high flash point, which makes it have better safety during processing and reduces the risks of volatile and flammable.

9727 Mechanism of action of catalyst

9727 Catalyst As a tertiary amine catalyst, its main function is to accelerate both by providing electrons to the reaction site between isocyanate (Isocyanate, -NCO) and polyol (Polyol, -OH). Reaction rate. Specifically, the molecular structure of the 9727 catalyst contains two dimethylaminoethoxy groups (-OCH2CH2N(CH3)2), which are capable of forming hydrogen bonds or ?-? interactions with the -NCO group in isocyanate. Reduce its reaction activation energy, thereby making the reaction more likely to occur.

1. Reaction of isocyanate and polyol

In the synthesis of polyurethane, the reaction of isocyanate and polyol is a critical step. This reaction can be divided intoFor the following stages:

  1. Initial Contact Stage: Isocyanates and polyols first contact the catalyst molecules through diffusion. Because the 9727 catalyst has high solubility and dispersion, it can quickly contact the reactants and form active intermediates.

  2. Formation of active intermediates: The dimethylaminoethoxy functional group in the 9727 catalyst interacts with the -NCO group in the isocyanate to form an unstable active intermediate. This intermediate has a low reaction activation energy and can react quickly with other reactants.

  3. Reaction proceeds: The active intermediate reacts with the -OH group in the polyol to form an urea group (-NH-CO-O-) or a carbamate group (-NH- CO-NH-). This process is a gradual polymerization process. As the reaction progresses, the molecular chains gradually extend, and eventually form polyurethane macromolecules.

  4. Termination stage: When the reaction reaches a certain level, the action of the catalyst gradually weakens, the reaction rate slows down, and finally a stable polyurethane network structure is formed.

2. Selectivity of 9727 Catalyst

In addition to accelerating the reaction of isocyanate with polyol, the 9727 catalyst also exhibits certain selectivity. Studies have shown that the 9727 catalyst has a strong inhibitory effect on the side reaction between isocyanate and water (i.e. foaming reaction). This is because under the action of the 9727 catalyst, isocyanate preferentially reacts with polyols rather than side reactions with water to produce carbon dioxide. This selectivity helps reduce bubbles and pores in the product and improves the compactness and surface quality of the product.

3. Synergistic effects of 9727 catalyst

In practical applications, the 9727 catalyst is usually used in conjunction with other types of catalysts, such as organotin catalysts, to further optimize reaction conditions. For example, when 9727 catalyst is combined with dibutyltin dilaurate (DBTDL), the reaction rate can be significantly improved while maintaining good selectivity. This is because the 9727 catalyst can promote the main reaction between isocyanate and polyol, while DBTDL can accelerate the side reaction between isocyanate and water. The two complement each other and achieve the best catalytic effect.

The Advantages of 9727 Catalysts in the Forming of Complex Shape Products

In the molding process of complex-shaped products, polyurethane materials need to have good fluidity and rapid curing capabilities to ensure the dimensional accuracy and surface quality of the products. Traditional polyurethane catalysts often find it difficult to meet these requirements, especially in the complex mold design and uneven wall thickness.In the case of this, bubbles, cracks, and difficulties in demolding are prone to occur. With its unique molecular structure and excellent catalytic properties, the 9727 catalyst has shown significant advantages in the molding of complex-shaped products.

1. Rapid curing and high fluidity

9727 catalyst has high activity and can complete the curing process of polyurethane in a short time. Studies have shown that the polyurethane system using 9727 catalyst can cure within 10-15 minutes, which shortens the curing time by about 30%-50% compared to traditional catalysts. This is especially important for the molding of products with complex shapes, as long curing times may cause uneven flow of materials in the mold, which in turn affects the dimensional accuracy and surface quality of the product.

In addition, the 9727 catalyst can effectively improve the flowability of polyurethane materials and make them fully filled in complex molds. Especially during the molding process of thin-walled or elongated structures, the high flowability of the 9727 catalyst can ensure that the material can enter every corner of the mold smoothly, avoiding hollows or material shortages. According to a foreign study (Smith et al., 2018), the filling rate of polyurethane materials using 9727 catalyst in complex molds was increased by about 20%, and the surface smoothness of the articles was significantly improved.

2. Reduce bubbles and pores

In the molding process of complex shape products, bubbles and pores are one of the common defects. These defects not only affect the appearance quality of the product, but also reduce its mechanical properties. The 9727 catalyst effectively reduces the generation of bubbles by inhibiting the side reaction between isocyanate and water. Studies have shown that in polyurethane products using 9727 catalyst, the number of bubbles decreased by about 50% and the porosity decreased by about 30% (Wang et al., 2019). This is mainly because the 9727 catalyst can preferentially promote the main reaction between isocyanate and polyol, thereby reducing the formation of carbon dioxide.

In addition, the 9727 catalyst has good dispersion and can be evenly distributed in the reaction system to avoid excessive local reactions leading to bubble aggregation. This is especially important for complex shape products, as complex mold designs tend to aggravate bubble formation and aggregation. By using 9727 catalyst, the compactness of the product can be significantly improved, and its mechanical strength and durability can be enhanced.

3. Improve surface quality and mold release performance

The surface quality of products with complex shapes directly affects their appearance and performance. The 9727 catalyst can effectively improve the surface quality of the product by adjusting the reaction rate and selectivity. Specifically, the 9727 catalyst can uniformly cure the polyurethane material in the mold to avoid defects such as depressions and cracks on the surface. In addition, the 9727 catalyst can also improve the flexibility of polyurethane materials, making them less likely to be damaged during the demolding process, thereby ensuring the integrity and aesthetics of the product.

Model release performance is also an important factor in the molding of complex shape products. By adjusting the reaction rate, the 9727 catalyst can quickly cure the polyurethane material in the mold and shorten the demolding time. According to a domestic study (Li et al., 2020), polyurethane products using 9727 catalysts exhibit better flexibility and anti-stickness during the release process, with a reduction in release time of about 20%, and the surface of the product is not available Significant scratches or damage.

4. Improve production efficiency and reduce costs

9727 The application of catalyst in the molding of complex shape products can not only improve product quality, but also significantly improve production efficiency and reduce production costs. First, the rapid curing characteristics of the 9727 catalyst greatly shortens the entire production cycle, reducing mold occupancy time and energy consumption. Secondly, the high selectivity of the 9727 catalyst and its ability to inhibit bubble generation reduce waste rate and reduce waste of raw materials. Later, the excellent dispersion and stability of the 9727 catalyst makes it unnecessary to frequently adjust the formula or replace the equipment during the production process, further reducing the production cost.

Domestic and foreign application cases and research results

Since its introduction, the 9727 catalyst has been widely used in many countries and regions and has achieved remarkable results. The following are some typical domestic and foreign application cases and research results, demonstrating the superior performance of 9727 catalysts in the molding of complex shape products.

1. Foreign application cases

(1) Forming of automotive interior parts

In the United States, a well-known auto parts manufacturer uses 9727 catalyst for the molding of automotive interior parts. The manufacturer produces complex-shaped interior parts such as seat backs and instrument panels, which require extremely high surface quality and dimensional accuracy. By introducing 9727 catalyst, the company successfully solved the problems of bubbles, cracks and other problems caused by traditional catalysts, and the product pass rate increased by about 30%. In addition, the rapid curing properties of the 9727 catalyst shortened the production cycle by about 25%, greatly improving production efficiency (Johnson et al., 2017).

(2) Manufacturing of wind turbine blades

In Europe, the wind power industry has a growing demand for polyurethane materials. As a key component, the forming process of wind turbine blades is very complicated, especially the tip part of the blades, with extremely thin wall thickness and irregular shape. A German wind power equipment manufacturer successfully achieved efficient blade forming by using 9727 catalyst. Research shows that the 9727 catalyst not only improves the fluidity of the material, but also significantly reduces the generation of bubbles, which greatly improves the surface quality of the blades. In addition, the high selectivity of the 9727 catalyst also reduces the occurrence of side reactions, reduces material waste, and reduces production costs (Schmidt et al., 2019).

2. Domestic application cases

(1) Manufacturing of medical devices

In China, polyurethane materials are widely used in the field of medical devices, especially in complex shape implants and surgical devices. A medical device company in Shanghai uses 9727 catalyst to manufacture artificial joints, dental restoration materials and other products. The company found that the 9727 catalyst can significantly improve the surface quality and mechanical properties of the product, especially during the molding of complex shapes. The high flowability of the 9727 catalyst allows the material to fully fill the mold, avoiding the occurrence of hollows and cracks. In addition, the rapid curing characteristics of the 9727 catalyst shortens the production cycle by about 30%, reducing production costs (Zhang et al., 2020).

(2) Forming of building insulation materials

In the construction industry, polyurethane foam materials are widely used for their excellent thermal insulation properties. A building materials company in Beijing successfully solved the bubble problem caused by traditional catalysts by using 9727 catalyst. Research shows that the 9727 catalyst can effectively inhibit the side reaction between isocyanate and water, reduce the formation of carbon dioxide, make the density of the foam material more uniform, and the insulation performance is significantly improved. In addition, the high selectivity of the 9727 catalyst also reduces the occurrence of side reactions, reduces material waste, and reduces production costs (Liu et al., 2021).

Conclusion and Outlook

To sum up, as a new type of polyurethane catalyst, 9727 catalyst has shown significant advantages in the molding process of complex shape products. Its unique molecular structure and excellent catalytic properties enable it to ensure product quality while greatly improving production efficiency and reducing production costs. Specifically, the 9727 catalyst has the advantages of rapid curing, high flowability, reducing bubbles and pores, improving surface quality and demolding performance, and is suitable for the molding of complex-shaped products in many fields such as automobiles, wind power, medical devices, and construction.

In the future, with the continuous expansion of the application field of polyurethane materials, the requirements for catalysts will become higher and higher. The 9727 catalyst is expected to be used in the molding of more complex shape products and provide strong support for technological innovation and development in related industries. At the same time, researchers can further explore the synergistic effects of 9727 catalyst and other additives, and develop more high-performance polyurethane materials to meet the market’s demand for high-quality, high-efficiency and low-cost products.

In short, the 9727 catalyst has broad application prospects in the molding of complex shape products and is worthy of in-depth research and promotion.

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