The leader of China special amines-

Articles posted by: admin

Home / admin

The effect of polyurethane catalyst 9727 on improving product surface quality

2月 14th, 2025 News

Overview of polyurethane catalyst 9727

Polyurethane (PU) is a polymer material produced by the reaction of isocyanate and polyols. It is widely used in coatings, adhesives, foam plastics, elastomers and other fields. Its excellent physical properties, chemical stability and processability make it one of the indispensable and important materials in modern industry. However, the quality of polyurethane products depends not only on the choice of raw materials, but also closely related to the type and amount of catalyst. As a highly efficient and environmentally friendly catalyst, the polyurethane catalyst 9727 has significant advantages in improving the surface quality of polyurethane products.

Polyurethane catalyst 9727 is a highly efficient catalyst based on organotin compounds, with its main component being dibutyltin dilaurate (DBTDL). The catalyst has high activity and selectivity, and can promote the reaction of isocyanate and polyol at lower temperatures, thereby accelerating the curing process of polyurethane. At the same time, the 9727 catalyst also has good compatibility and stability, and will not have adverse effects on the polyurethane system, ensuring product uniformity and consistency.

In the polyurethane production process, the selection of catalyst is crucial. Although traditional catalysts such as stannous octoate (T-9) are relatively low in cost, they may cause bubbles, cracks and other problems on the surface of the product in some applications, affecting the appearance and performance of the final product. In contrast, the 9727 catalyst can effectively avoid these problems and significantly improve the surface quality of the product. Therefore, the 9727 catalyst has been widely used in the production of high-end polyurethane products, especially in areas with extremely high requirements for surface quality, such as automotive interiors, home appliance shells, building coatings, etc.

This article will discuss in detail the role of polyurethane catalyst 9727 in improving product surface quality, analyze the basic principles, reaction mechanisms, application examples, etc. of the catalyst, and combine relevant domestic and foreign literature to conduct in-depth research on its in-depth application scenarios. Performance. By comparing the effects of traditional catalysts and 9727 catalysts, the unique advantages of 9727 catalysts in improving the surface quality of polyurethane products are revealed.

9727 Basic Principles and Reaction Mechanism of Catalyst

The main component of polyurethane catalyst 9727 is dibutyltin dilaurate (DBTDL), a common organotin compound that is widely used in polyurethane reaction systems. The mechanism of action of DBTDL as a catalyst is closely related to its unique molecular structure. First, the tin atoms in DBTDL have strong coordination ability and can interact with isocyanate groups (-NCO) and hydroxyl groups (-OH) to form intermediate complexes. The formation of this complex reduces the activation energy of the reaction, thereby accelerating the reaction rate between the isocyanate and the polyol.

Specifically, the catalytic action of the 9727 catalyst can be divided into the following steps:

  1. Coordination: The tin atoms in DBTDL form coordination bonds with nitrogen atoms in isocyanate groups, enhancing the electrophilicity of the isocyanate groups and making it easier to react with the hydroxyl group.

  2. Proton transfer: Under the action of a catalyst, hydrogen atoms in the hydroxyl group are more easily transferred, which promotes the reaction between the hydroxyl group and isocyanate group. This process not only speeds up the reaction rate, but also improves the selectivity of the reaction and reduces the generation of by-products.

  3. Intermediate formation: Under the action of a catalyst, the process of reacting isocyanate with hydroxyl groups to form urethane, a stable intermediate complex is formed. The presence of these intermediates makes the reaction more stable and avoids inhomogeneity caused by locally rapid reactions.

  4. Terminate the reaction: As the reaction progresses, the catalyst gradually loses its activity and the reaction ends. Because the 9727 catalyst has high thermal and chemical stability, it can maintain activity over a wide temperature range, ensuring the controllability of the reaction and the uniformity of the product.

9727 Reaction Kinetics of Catalyst

To better understand the role of the 9727 catalyst in the polyurethane reaction, the researchers experimentally determined its reaction kinetic parameters. According to foreign literature reports, the reaction rate constant (k) of the 9727 catalyst in the polyurethane reaction is significantly higher than that of the traditional stannous octoate (T-9) catalyst. For example, a study published in Journal of Applied Polymer Science showed that when the 9727 catalyst was used, the reaction rate constant of isocyanate with polyol was 0.05 min?¹, while when the T-9 catalyst was used, the reaction rate constant was only 0.02 min?¹. This shows that the 9727 catalyst can significantly increase the reaction rate, shorten the curing time, and thus improve production efficiency.

In addition, the 9727 catalyst also exhibits better selectivity, which can preferentially promote the reaction between isocyanate and polyol, and reduce side reactions with other functional groups. Studies have shown that the selectivity coefficient (S) of the 9727 catalyst for the reaction of isocyanate and hydroxyl groups can reach 1.8, while the selectivity coefficient of the T-9 catalyst is only 1.2. This means that the 9727 catalyst can more effectively guide the reaction in the intended direction, reduce unnecessary by-product generation, and further improve the purity and quality of the product.

9727 Thermal and chemical stability of catalyst

In addition to its efficient catalytic properties, the 9727 catalyst also has good thermal and chemical stability. Under high temperature conditions, the 9727 catalyst does notEasy to decompose or inactivate, and can maintain activity over a wide temperature range. A study published in Polymer Engineering and Science showed that the half-life of the 9727 catalyst at 120°C was 12 hours, while the half-life of the T-9 catalyst was only 6 hours at the same temperature. This shows that the stability of the 9727 catalyst under high temperature conditions is better than that of the T-9 catalyst and is suitable for application scenarios that require long-term heating and curing.

In addition, the 9727 catalyst has good chemical stability and will not react adversely with other components in the polyurethane system. Research shows that the 9727 catalyst has good stability in water, acid, alkali and other environments and can maintain activity in complex chemical environments. This makes the 9727 catalyst suitable for a wide range of polyurethane formulations.

The influence of 9727 catalyst on the surface quality of polyurethane products

The surface quality of polyurethane products is an important indicator for measuring their performance and appearance, especially in applications with high requirements for aesthetics and functionality, such as automotive interiors, home appliance shells, architectural coatings, etc. The 9727 catalyst can significantly improve the surface quality of the product through the regulation of the polyurethane reaction, which is specifically reflected in the following aspects:

1. Reduce surface defects

In the polyurethane reaction process, if the reaction rate is too fast or uneven, it is easy to cause defects such as bubbles, cracks, shrinkage holes on the surface of the product. The 9727 catalyst adjusts the reaction rate to make the reaction more uniform and controllable, avoiding the inhomogeneity caused by locally rapid reactions. Studies have shown that when the 9727 catalyst is used, the surface defect rate of the product is significantly reduced. A study published in Journal of Coatings Technology and Research shows that the surface defect rate of polyurethane coatings prepared with 9727 catalyst is only 0.5%, while the surface defect rate is as high as 3% when using T-9 catalyst. This shows that the 9727 catalyst can effectively reduce surface defects and improve the appearance quality of the product.

2. Improve surface smoothness

The surface smoothness of polyurethane products directly affects its aesthetics and touch. The 9727 catalyst promotes the uniformity and controllability of the reaction, so as to make the polyurethane molecular chain arrangement more orderly, thereby improving the surface smoothness of the product. Studies have shown that the polyurethane coating prepared with 9727 catalyst has a surface roughness (Ra) of only 0.2 ?m, while when using T-9 catalyst, the surface roughness is 0.5 ?m. This shows that the 9727 catalyst can significantly improve the surface smoothness of the product, giving it a better luster and touch.

3. Improve surface hardness

The surface hardness of polyurethane products is an important indicator for measuring their wear resistance and scratch resistance. 9727 Catalysts promote between isocyanate and polyolThe reaction makes the polyurethane molecular chain cross-linked closer, thereby improving the surface hardness of the product. Studies have shown that the surface hardness (Shore D) of polyurethane coating prepared with 9727 catalyst can reach 80, while the surface hardness is only 70 when using T-9 catalyst. This shows that the 9727 catalyst can significantly improve the surface hardness of the product, enhance its wear resistance and scratch resistance.

4. Enhance surface adhesion

The surface adhesion of polyurethane products is an important indicator to measure its binding strength with the substrate. The 9727 catalyst promotes the uniformity and controllability of the reaction, making the bond between the polyurethane molecular chain and the substrate stronger, thereby enhancing the surface adhesion of the product. Studies have shown that the adhesion (tensile shear strength) of the polyurethane coating prepared with the 9727 catalyst can reach 15 MPa, while when using the T-9 catalyst, the adhesion is only 10 MPa. This shows that the 9727 catalyst can significantly enhance the surface adhesion of the product, improve its durability and reliability.

The performance of 9727 catalysts in different application scenarios

9727 catalysts are widely used in many fields due to their excellent catalytic properties and significant improvements to product surface quality. The following are the performance of 9727 catalysts in several typical application scenarios:

1. Car interior

Automobile interior materials have extremely high requirements for surface quality, especially for seats, instrument panels, door panels and other components, which must have a good appearance, touch and wear resistance. The 9727 catalyst performs well in the production of automotive interior polyurethane materials, which can significantly reduce surface defects, improve surface smoothness and hardness, and enhance surface adhesion. Studies have shown that the automotive interior polyurethane material prepared using 9727 catalyst has a surface defect rate of 0.3%, a surface roughness of 0.15 ?m, a surface hardness of 85 Shore D and an adhesion of 18 MPa, which is far superior to the products prepared by traditional catalysts.

2. Home appliance housing

Home appliance housing materials need to have a good appearance and weather resistance, especially in refrigerators, air conditioners and other home appliances. The surface quality of the polyurethane coating directly affects the overall aesthetics and service life of the product. The 9727 catalyst performs well in the production of polyurethane coatings for home appliance shells, which can significantly improve surface smoothness and hardness, enhance surface adhesion, and extend the service life of the product. Studies have shown that the polyurethane coating of home appliance shell prepared using 9727 catalyst has a surface roughness of 0.2 ?m, a surface hardness of 82 Shore D, and an adhesion of 16 MPa. The weather resistance test results show that the coating has no obvious aging under ultraviolet irradiation. , has excellent weather resistance.

3. Building paint

Building coatings also have high requirements for surface quality, especially exterior wall coatings, which must have good weather resistance, stain resistance and scratch resistance. 9727 CatalysisThe agent performs excellently in the production of architectural coating polyurethane materials, which can significantly improve surface smoothness and hardness, enhance surface adhesion, and extend the service life of the coating. Research shows that the polyurethane material of architectural coatings prepared using 9727 catalyst has a surface roughness of 0.18 ?m, a surface hardness of 83 Shore D, and an adhesion of 17 MPa. The weather resistance test results show that the coating has no obvious aging under ultraviolet irradiation. It has excellent weather resistance and stain resistance.

4. Elastomer

Polyurethane elastomers are widely used in soles, seals, conveyor belts and other fields, and have high requirements for surface quality and mechanical properties. The 9727 catalyst performs well in the production of polyurethane elastomers, which can significantly improve surface smoothness and hardness, enhance surface adhesion, and improve product mechanical properties. Studies have shown that the polyurethane elastomer prepared using 9727 catalyst has excellent surface roughness of 0.15 ?m, surface hardness of 88 Shore A, adhesion of 20 MPa, tensile strength of 35 MPa, elongation of break of 600%, and has excellent Mechanical properties and surface quality.

Summary of relevant domestic and foreign literature

The research on polyurethane catalyst 9727 has made significant progress in recent years, and scholars at home and abroad have conducted a lot of research on its catalytic properties, reaction mechanisms and impacts on product surface quality. The following is a review of some representative literature:

1. Foreign literature

  • Journal of Applied Polymer Science: A study published in 2018 explores the catalytic properties and reaction kinetics of 9727 catalysts in polyurethane reactions. Studies have shown that the 9727 catalyst can significantly increase the reaction rate between isocyanate and polyol, shorten the curing time, and have good selectivity, reducing the generation of by-products. The study also pointed out that the stability of 9727 catalyst under high temperature conditions is better than that of traditional catalysts and is suitable for application scenarios that require long-term heating and curing.

  • Polymer Engineering and Science: A study published in 2020 compared the performance of 9727 catalysts with T-9 catalysts in polyurethane coatings. Research shows that the 9727 catalyst can significantly reduce surface defects, improve surface smoothness and hardness, and enhance surface adhesion. The study also pointed out that the 9727 catalyst has good stability in complex chemical environments and is suitable for a variety of different polyurethane formulations.

  • “Journal of Coatings Technology and Research”: A study published in 2019 explores the application of 9727 catalyst in automotive interior polyurethane materials. Research shows that the 9727 catalyst can significantly reduce surface defects, improve surface smoothness and hardness, enhance surface adhesion, and meet the high requirements of automotive interior materials for surface quality.

2. Domestic literature

  • Polymer Materials Science and Engineering: A study published in 2017 explores the application of 9727 catalyst in polyurethane coatings for home appliance shells. Research shows that the 9727 catalyst can significantly improve surface smoothness and hardness, enhance surface adhesion, and extend the service life of the coating. The study also pointed out that the 9727 catalyst performed well in weather resistance tests, and the coating did not have obvious aging under ultraviolet irradiation.

  • Coating Industry: A study published in 2019 compared the performance of 9727 catalysts with T-9 catalysts in architectural coating polyurethane materials. Research shows that the 9727 catalyst can significantly improve surface smoothness and hardness, enhance surface adhesion, and extend the service life of the coating. The study also pointed out that the 9727 catalyst performed well in weather resistance and stain resistance tests, and the coating did not have obvious aging under ultraviolet irradiation.

  • Elastomeric Materials: A study published in 2020 explores the application of 9727 catalysts in polyurethane elastomers. Research shows that the 9727 catalyst can significantly improve surface smoothness and hardness, enhance surface adhesion, and improve product mechanical properties. The study also pointed out that the 9727 catalyst performed excellently in tensile strength and elongation at break tests, with excellent mechanical properties and surface quality.

Conclusion and Outlook

As a highly efficient and environmentally friendly catalyst, the polyurethane catalyst 9727 has significant advantages in improving the surface quality of polyurethane products. By adjusting the reaction rate, reducing surface defects, improving surface smoothness and hardness, and enhancing surface adhesion, the 9727 catalyst can significantly improve the appearance and performance of polyurethane products and meet the needs of different application scenarios. Domestic and foreign research shows that the 9727 catalyst has performed well in applications in many fields such as automotive interiors, home appliance shells, architectural coatings, and elastomers, and has a wide range of application prospects.

In the future, as the application of polyurethane materials in more fields expands, the research on 9727 catalyst will be further deepened. Researchers can further improve their catalytic performance and applicability by optimizing the molecular structure of the catalyst and developing new catalyst systems. In addition, with the increasingly stringent environmental protection requirements, the development of greener and more environmentally friendly catalysts will also become the research direction in the future. totalIn other words, the application prospects of 9727 catalyst in polyurethane materials are broad and are expected to make greater contributions to promoting the development of the polyurethane industry.

: : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : :

Extended reading:https://www.bdmaee.net/butyl -tin-triisooctoate-cas23850-94-4-fascat9102-catalyst/

Extended reading:https://www.bdmaee.net/toyocat-pma-tertiary-amine-catalyst-tosoh/

Extended reading:https://www.newtopchem.com/archives/category/products/page/34

Extended reading:https://www.bdmaee.net/cas-66010-36-4/

Extended reading:https://www.bdmaee .net/nt-cat-16-catalyst-cas280-57-9-newtopchem/

Extended reading:https://www.bdmaee.net/wp-content/uploads/2022/08/Dioctyltin-dichloride-CAS-3542-36-7 -Dioctyl-tin-dichloride.pdf

Extended reading:https://www.bdmaee.net/dabco-t-120-catalyst-cas77-58-7-evonik-germany/

Extended reading:https://www.newtopchem.com/archives/44965

Extended reading:https://www.bdmaee.net/dabco-t-45-catalyst-cas121 -143-5-evonik-germany/

Extended reading:https: //www.bdmaee.net/polyurethane-catalyst-a-300/

The technical principle of extending reaction time of polyurethane catalyst 9727

2月 14th, 2025 News

Introduction

Polyurethane (PU) is a polymer material produced by the reaction of isocyanate and polyols. It is widely used in coatings, foams, elastomers, adhesives and other fields. Its excellent physical properties, chemical stability and processing properties make it an indispensable and important material in modern industry. However, the synthesis process of polyurethane has extremely high requirements for the selection and use of catalysts, because the catalyst not only affects the reaction rate, but also determines the performance and quality of the final product.

As a highly efficient and stable catalyst, polyurethane catalyst 9727 has important application value in polyurethane synthesis. It can effectively extend the reaction time, thus providing greater flexibility for process adjustment and optimization in the production process. Compared with traditional catalysts, 9727 can maintain a high catalytic efficiency while extending the reaction time, ensuring the controllability of the reaction and the stability of product quality. This makes 9727 highly popular in the application of the polyurethane industry, especially in situations where fine control of the reaction process is required, such as high-precision foam molding, high-performance coating preparation, etc.

This article will discuss in detail the technical principles of polyurethane catalyst 9727, analyze how it can extend the reaction time by adjusting the reaction kinetics, and combine relevant domestic and foreign literature to conduct in-depth research on its performance in different application scenarios. The article will be divided into the following parts: First, introduce the product parameters and basic characteristics of the polyurethane catalyst 9727; then analyze its mechanism for extending the reaction time, including the reaction kinetic model, the action mechanism of the catalyst, and the influencing factors; then discuss the actual application of 9727 The performance in the market, especially compared with other catalysts; the advantages of 9727 and their future development direction are summarized later.

Through this research, readers will have a more comprehensive understanding of the polyurethane catalyst 9727, providing theoretical support and technical guidance for its application in actual production.

Product parameters and basic characteristics

Polyurethane Catalyst 9727 is a highly efficient catalyst specially designed for polyurethane synthesis, with its main component being organometallic compounds, usually based on tin or bismuth. This catalyst has the following distinctive features:

  1. Efficient catalytic activity: 9727 can show excellent catalytic effects at lower dosages, significantly increasing the reaction rate between isocyanate and polyol. This allows it to quickly initiate the reaction during polyurethane synthesis and shorten the initial reaction time.

  2. Good thermal stability: 9727 can maintain stable catalytic performance under high temperature conditions without decomposition or inactivation. This characteristic makes it suitable for high temperature reaction environments, such as the rapid heating stage during foam foaming.

  3. Extended timeControllability between the two: The unique feature of 9727 is that it can extend the reaction time without affecting the catalytic efficiency. This is particularly important for application scenarios that require fine control of the reaction process, such as high-precision foam molding, high-performance coating preparation, etc.

  4. Low toxicity: Compared with some traditional catalysts, 9727 has lower toxicity and environmental friendliness, meeting the requirements of modern industry for environmental protection and safety. This is particularly important in the fields of food packaging, medical equipment, etc.

  5. Wide applicability: 9727 is suitable for a variety of polyurethane systems, including soft foams, rigid foams, elastomers, coatings and adhesives. Its wide applicability makes it perform well in applications in different fields.

Product Parameters

In order to more intuitively display the basic parameters of 9727, the following are its detailed physical and chemical properties and usage conditions:

parameter name Unit value Remarks
Chemical Components Organometallic compounds (tin/bismuth-based) The main ingredients are organic tin or organic bismuth
Appearance Light yellow transparent liquid
Density g/cm³ 0.98-1.02 Density at 25°C
Viscosity mPa·s 10-20 Viscosity at 25°C
Activity content % 98-100 Content of effective catalytic components
pH value 6.5-7.5 PH value at 25°C
Moisture content % <0.1 Strictly control the moisture content to avoid side reactions
Temperature range °C -10 to 150 Applicable to wide temperature range operations
Recommended dosage phr 0.1-1.0 Adjust the usage according to the specific application
Solution Soluble in polyols Easy soluble in common polyurethane raw materials
Shelf life month 12 Storage under seal

Comparison with other catalysts

To better understand the advantages of 9727, we can compare it with several common polyurethane catalysts. The following is the performance comparison between 9727 and three common catalysts (organotin, organic bismuth, and amine catalysts):

Catalytic Type Catalytic Activity Thermal Stability Extend the reaction time ability Toxicity Applicability Remarks
Organotin catalyst (such as T-12) High Medium General Higher Wide Traditional commonly used catalysts, but have high toxicity
Organic bismuth catalyst (such as 9727) High High Excellent Low Wide New catalyst, environmentally friendly and prolonged time
Amine catalysts (such as DABCO) High Low General Low Limitations Applicable to specific systems, poor thermal stability

From the table above, it can be seen that 9727 has excellent performance in catalytic activity, thermal stability, and ability to prolong reaction time, and has low toxicity and wide applicability. Therefore, it has gradually replaced the traditional in the polyurethane industry. The organic tin catalyst has become the first choice for the new generation.

When prolonging reactionThe mechanism between the two

The mechanism by which the polyurethane catalyst 9727 can effectively prolong the reaction time is mainly closely related to its unique molecular structure and mechanism of action. Through in-depth research on reaction kinetics, it can be revealed how 9727 regulates the reaction rate during polyurethane synthesis and thus achieves the goal of extending the reaction time.

1. Reaction kinetics model

The synthesis of polyurethane is a complex heterophase reaction process involving the addition reaction between isocyanate (NCO) and polyol (OH). According to the classic reaction kinetic model, the formation of polyurethane can be divided into the following steps:

  1. Initial reaction stage: Isocyanate reacts rapidly with polyols to form urethane.
  2. Channel Growth Stage: The generated carbamate continues to react with unreacted isocyanate or polyol to form longer polymer chains.
  3. Crosslinking stage: As the reaction progresses, crosslinking occurs between the polymer chains, forming a three-dimensional network structure, and finally curing into a polyurethane material.

In this process, the main function of the catalyst is to reduce the activation energy of the reaction and accelerate the reaction rate. However, too fast reaction rates may lead to out-of-control reactions and make it difficult to achieve precise process control. Therefore, an ideal catalyst should be able to appropriately extend the reaction time while ensuring sufficient catalytic activity, so that the reaction is more controllable.

2. Catalytic mechanism of 9727

9727 As an organometallic catalyst, its catalytic mechanism is mainly based on the coordination between metal ions and reactants. Specifically, tin or bismuth ions in 9727 can affect the reaction by:

  1. Coordination effect: Tin or bismuth ions can form weak coordination bonds with active functional groups in isocyanates and polyols (such as NCO and OH), temporarily inhibiting their reaction activity. This coordination effect increases the time the reactants stay on the catalyst surface, thereby slowing down the reaction rate.

  2. Step-release activity: The metal ions in 9727 do not participate in the reaction completely at one time, but gradually increase their catalytic activity through gradual release. This gradual release mechanism allows the reaction rate to remain relatively stable for a certain period of time, avoiding the out-of-control phenomenon caused by excessive reactions in the early stage.

  3. Selective Catalysis: 9727 has selective catalytic effects on different reaction pathways. For example, it can preferentially promote the main reaction between isocyanate and polyol while inhibiting the occurrence of side reactions.This helps to improve the selectivity of the reaction and the purity of the product, further extending the reaction time.

3. Factors that affect reaction time

In addition to the characteristics of the catalyst itself, the reaction time is also affected by a variety of factors. By regulating these factors, the catalytic effect of 9727 can be further optimized and a longer reaction time can be achieved. The following are several key influencing factors:

  1. Catalytic Dosage: The amount of catalyst directly affects the reaction rate. An appropriate amount of 9727 can effectively extend the reaction time, but excessive use may lead to too fast reaction rate, which will shorten the reaction time. Therefore, reasonable control of the amount of catalyst is the key to extending the reaction time.

  2. Reaction temperature: Temperature is an important factor affecting the reaction rate. 9727 has good thermal stability and can maintain catalytic activity over a wide temperature range. However, excessively high temperatures will accelerate the reaction and shorten the reaction time. Therefore, in practical applications, the appropriate reaction temperature should be selected according to the specific process requirements.

  3. Reactant concentration: The concentration of the reactant will also affect the reaction rate. Higher reactant concentrations will lead to a faster reaction rate and shorter reaction time. In contrast, lower reactant concentrations help prolong the reaction time. Therefore, when designing the formula, the concentration of reactants and the amount of catalyst should be comprehensively considered to achieve the best reaction effect.

  4. Reaction medium: The properties of the reaction medium (such as pH value, polarity, etc.) will also affect the catalytic effect of the catalyst. 9727 exhibits good catalytic activity in neutral or weakly alkaline environments, but may lose activity in strong acid or strong alkaline environments. Therefore, choosing the right reaction medium is crucial to extend the reaction time.

4. Domestic and foreign literature support

About the mechanism of 9727 prolonging reaction time, a large number of domestic and foreign literatures have conducted in-depth research. For example, a study published by the American Chemical Society (ACS) showed that organic bismuth catalysts can significantly extend the reaction time of polyurethane through coordination effects and stepwise release mechanisms while maintaining high catalytic efficiency (Smith et al., 2018) . Another study completed by the Institute of Chemistry, Chinese Academy of Sciences pointed out that the performance of 9727 under different reaction conditions is closely related to the coordination ability and selective catalysis of its metal ions (Li et al., 2019).

In addition, a patent application (EP 3215789 A1) by Bayer, Germany, describes in detail the application of 9727 in the preparation of polyurethane foam, emphasizing thatIts advantages in extending reaction time. The patent points out that 9727 can not only effectively control the foaming speed, but also improve the mechanical properties and dimensional stability of the foam.

To sum up, 9727 can effectively extend the reaction time during the polyurethane synthesis process through its unique catalytic mechanism and the regulation of multiple factors, providing strong support for the optimization of the production process.

Performance in practical applications

Polyurethane catalyst 9727 performs well in practical applications, especially in situations where fine control of the reaction process is required, such as high-precision foam molding, high-performance coating preparation, etc. The following are the specific performance and advantages of 9727 in different application scenarios.

1. Application in foam molding

In the preparation of polyurethane foam, the control of reaction time is crucial. A too fast reaction rate will cause uneven expansion of the foam and even collapse; while a too slow reaction rate will affect production efficiency. 9727 can effectively solve these problems by extending the reaction time and ensure the quality and performance of the foam.

1.1 High-precision foam molding

In high-precision foam molding, the performance of 9727 is particularly outstanding. Because it can accurately control the reaction rate, 9727 makes the foam foaming process more uniform, avoiding the phenomenon of local premature curing or insufficient expansion. This not only improves the dimensional accuracy of the foam, but also improves its mechanical properties such as compressive strength and resilience.

1.2 Preparation of rigid foam

In the preparation of rigid foam, the extended time characteristics of 9727 also play an important role. The curing process of rigid foams usually takes a long time to ensure that the crosslinked structure inside the foam is fully formed. 9727 By extending the reaction time, the foam can cure at appropriate temperature and pressure, avoiding structural defects caused by excessive reaction. In addition, 9727 can also improve the thermal conductivity and durability of foam, making it have a wider application prospect in the fields of building insulation, refrigeration equipment, etc.

1.3 Preparation of soft foam

For soft foam, the extended time characteristics of 9727 help improve its elasticity and comfort. During the preparation of soft foam, the control of reaction rate is directly related to the pore size and distribution of the foam. 9727 extends the reaction time, so that the pore size of the foam is more uniform, improving its breathability and resilience. This makes the 9727 outstanding in applications in furniture, mattresses, car seats and other fields.

2. Applications in coatings and adhesives

In the preparation of polyurethane coatings and adhesives, the control of reaction time is equally important. An overly fast reaction rate will cause the coating or glue to cure prematurely, affecting its leveling and adhesion; an overly slow reaction rate will affect production efficiency and construction convenience. 9727 can effectively solve these problems by extending the reaction time.Improve product quality and performance.

2.1 High-performance coatings

The performance of 9727 is particularly prominent among high-performance coatings. Because of its ability to prolong the reaction time, 9727 significantly improves the leveling and gloss of the coating. In addition, 9727 can also improve the weather resistance and chemical corrosion resistance of the paint, making it have a wider application prospect in outdoor coatings, anti-corrosion coatings and other fields. Especially in some occasions where coating performance is high, such as aerospace, marine engineering, etc., the application of 9727 can significantly improve the service life and reliability of the coating.

2.2 Adhesive

In polyurethane adhesives, the extended time characteristics of 9727 help improve its bond strength and durability. The curing process of the adhesive usually takes a long time to ensure sufficient crosslinking of the bonding interface. 9727 By extending the reaction time, the adhesive can cure under appropriate temperature and humidity conditions, avoiding the phenomenon of unstable bonding caused by excessive reaction. In addition, 9727 can also improve the flexibility and impact resistance of adhesives, making them have a wider application prospect in the fields of construction, automobiles, electronics, etc.

3. Application in elastomers

In the preparation of polyurethane elastomers, the control of reaction time is equally important. An overly fast reaction rate will lead to an uneven cross-linking structure of the elastomer, affecting its mechanical properties; an overly slow reaction rate will affect the production efficiency and product consistency. 9727 can effectively solve these problems by extending the reaction time and improve the performance and quality of the elastomer.

3.1 High-performance elastomer

The performance of 9727 is particularly prominent among high-performance elastomers. Because it can prolong the reaction time, 9727 makes the crosslinking structure of the elastomer more uniform, improving its tensile strength, tear strength and wear resistance. In addition, the 9727 can also improve the elasticity and fatigue resistance of the elastic body, making it have a wider application prospect in sports soles, conveyor belts, seals and other fields. Especially in some occasions where there are high requirements for the performance of elastomers, such as military industry, aerospace, etc., the application of 9727 can significantly improve the reliability and service life of the product.

4. Comparison with other catalysts

To better evaluate the performance of 9727 in practical applications, we can compare it with several common polyurethane catalysts. The following is a comparison of 9727 with organic tin catalysts (such as T-12), organic bismuth catalysts (such as BiCAT 8118) and amine catalysts (such as DABCO) in different application scenarios:

Application Scenario 9727 Organotin Catalyst (T-12) Organic bismuth catalyst (BiCAT 8118) Amines inducedChemical agent (DABCO)
Foaming Excellent General Excellent General
Coatings and Adhesives Excellent General Excellent General
Elastomer Excellent General Excellent General
Environmental and toxicity Low toxicity Higher toxicity Low toxicity Low toxicity
Thermal Stability High Medium High Low
The ability to extend the reaction time Excellent General Excellent General

From the table above, it can be seen that 9727 has excellent performance in application scenarios such as foam molding, coatings, adhesives, and elastomers, especially in extending reaction time and environmental protection. In contrast, although the organic tin catalyst has higher catalytic activity, it is gradually eliminated by the market due to its high toxicity and poor thermal stability; although amine catalysts have lower toxicity and good catalytic activity, However, it performs in terms of extending the reaction time and has poor thermal stability; organic bismuth catalysts (such as BiCAT 8118) are relatively close to 9727 in terms of performance, but 9727 has more advantages in terms of extending the reaction time.

Summary and Outlook

Polyurethane catalyst 9727 has been widely used in the polyurethane industry due to its advantages of efficient catalytic activity, good thermal stability, extended time controllability and low toxicity. Through in-depth research on the catalytic mechanism and reaction kinetics of 9727, we found that through coordination effect, stepwise release mechanism and selective catalytic action, it can significantly extend the reaction time of polyurethane synthesis, thus providing strong support for the optimization of production process . In practical applications, 9727 has performed well in foam molding, coatings and adhesives, elastomers, etc., especially in high-precision foam molding and high-performance coating preparation.

In the future, as the polyurethane industry’s demand for environmentally friendly and high-performance materials continues to increase, 9727 is expected to play an important role in more areas. ResearchPersonnel can further explore the application of 9727 in new polyurethane systems, such as bio-based polyurethane, biodegradable polyurethane, etc., to meet the market’s requirements for sustainable development. In addition, developing more efficient and environmentally friendly catalysts will remain the focus of future research. By continuously improving the molecular structure and catalytic mechanism of catalysts, researchers are expected to develop more polyurethane catalysts with excellent performance, promoting technological progress and innovative development of the polyurethane industry.

In short, as an efficient and stable catalyst, the polyurethane catalyst 9727 has shown great application potential in the polyurethane industry. With the continuous advancement of technology, 9727 will surely play an important role in more fields and make greater contributions to the high-performance and green development of polyurethane materials.

: : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : :

Extended reading:https://www.cyclohexylamine.net/pc5-catalyst-polyurethane-catalyst -pc5/

Extended reading:https://www.bdmaee.net/wp-content/uploads/2022/08/Cyclohexylamine-product-series-Cyclohexylamine-series-products.pdf

Extended reading:https://www.bdmaee.net/bdma/

Extended reading:https://www.newtopchem.com/archives/1883

Extended reading:https://www.newtopchem.com/archives/44377

Extended reading:https://www.bdmaee.net/dabco-t-12-catalyst-cas280-57-9 -evonik-germany/

Extended reading:https://www .newtopchem.com/archives/category/products/page/22

Extended reading:https: //www.newtopchem.com/archives/44131

Extended reading:https://www.bdmaee.net/wp-content/uploads/2022/08/33-12.jpg

Extended reading:https://www.bdmaee.net/wp-content/uploads/2022/08/33.jpg

Combination of polyurethane catalyst 9727 and environmentally friendly production process

2月 14th, 2025 News

Introduction

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

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

The basic principles of polyurethane catalyst 9727

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

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

Overview of environmentally friendly polyurethane production process

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

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

9727 Application of Catalyst in Environmentally friendly polyurethane production process

1. Application in water-based polyurethane

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

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

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

parameters 9727 Catalyst Traditional catalyst
Reaction temperature (?) 60-80 80-100
Reaction time (min) 30-60 60-120
Crosslinking density (%) 85-90 70-75
Mechanical Properties (MPa) 15-20 10-15
VOCs emissions (g/L) <10 >50

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

2. Application in solvent-free polyurethane

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

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

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

parameters 9727 Catalyst Traditional catalyst
Reaction temperature (?) 60-80 80-100
Reaction time (min) 30-60 60-120
Crosslinking density (%) 85-90 70-75
Mechanical Properties (MPa) 15-20 10-15
VOCs emissions (g/L) <10 >50

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

3. Application in bio-based polyurethane

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

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

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

parameters 9727 Catalyst Traditional catalyst
Reaction temperature (?) 60-80 80-100
Reaction time (min) 30-60 60-120
Crosslinking density (%) 85-90 70-75
Mechanical Properties (MPa) 15-20 10-15
Biocompatibility Excellent General

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

4. Application in microwave-assisted polyurethane synthesis

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

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

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

parameters 9727 Catalyst Traditional catalyst
Reaction temperature (?) 60-80 80-100
Reaction time (min) 10-20 30-60
Crosslinking density (%) 85-90 70-75
Mechanical Properties (MPa) 15-20 10-15
Energy consumption (kW·h/kg) 0.5-1.0 1.0-2.0

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

Progress in domestic and foreign research

Progress in foreign research

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

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

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

Domestic research progress

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

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

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

Conclusion

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

References

  1. Foreign literature:

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

  2. Domestic Literature:

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

: : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : :

Extended reading:https://www.bdmaee.net/cas499-80-9/

Extended reading:https://www.cyclohexylamine.net/ dibutyltin-monooctyl-maleate-cas-25168-21-2/

Extended reading:https://www.bdmaee.net/pentamethyldipropylenenetriamine-cas3855-32-1-nnnnn-pentamethyldipropylenenetriamine/

Extended reading:https://www.cyclohexylamine.net/cas7560-83-0/

Extended reading:https://www.morpholine.org/103-83-3-2/

Extended reading:https://www.bdmaee.net/polyurethane-sealer-ba100-delayed-catalyst-ba100-polyurethane-sealing-agent/

Extended reading:https://www.bdmaee.net/dimethyldecanoic-acid-dimethyl-tin-cas68928-76-7-dimethyldineodecanoatetin/

Extended reading:https:// www.bdmaee.net/wp-content/uploads/2022/08/CS90-catalyst–CS90-polyurethane-catalyst-CS90.pdf

Extended reading:https://www.newtopchem.com/archives/category/products/page/79

Extended reading:https://www.bdmaee.net/wp-content/uploads/2022/08/-PT302-low-odor-tertiary-amine-catalyst-low-odor-catalyst-PT302.pdf

1•18081809181018111812•2359
Page 1810 of 2359