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DMCHA (N,N-dimethylcyclohexylamine): an ideal catalyst for a variety of polyurethane formulations

3月 12th, 2025 News

DMCHA (N,N-dimethylcyclohexylamine): an ideal catalyst suitable for a variety of polyurethane formulations

Introduction

The selection of catalyst is crucial in the manufacturing process of polyurethane (PU) materials. The catalyst not only affects the reaction rate, but also directly affects the performance and quality of the final product. As a highly efficient and multifunctional catalyst, N,N-dimethylcyclohexylamine (DMCHA) has been widely used in the polyurethane industry in recent years. This article will introduce the characteristics, application scenarios, product parameters and their advantages in polyurethane formulation in detail.

1. Basic characteristics of DMCHA

1.1 Chemical structure

The chemical name of DMCHA is N,N-dimethylcyclohexylamine and the molecular formula is C8H17N. It is a colorless to light yellow liquid with a typical amine odor. Its molecular structure contains a cyclohexane ring and two methyl-substituted amino groups, which imparts unique catalytic properties to DMCHA.

1.2 Physical Properties

parameter name Value/Description
Molecular Weight 127.23 g/mol
Boiling point 160-162°C
Density 0.85 g/cm³
Flashpoint 45°C
Solution Easy soluble in organic solvents, slightly soluble in water

1.3 Chemical Properties

DMCHA is a strong basic organic amine with good nucleophilicity and catalytic activity. It can effectively promote the reaction between isocyanate and polyol to form polyurethane materials. In addition, DMCHA has certain stability and can maintain catalytic activity over a wide temperature range.

2. Application of DMCHA in polyurethane

2.1 Polyurethane foam

DMCHA plays an important role in the production of polyurethane foam. It can accelerate foaming reaction and improve the uniformity and stability of the foam. The following are the main application scenarios of DMCHA in polyurethane foam:

  • Soft foam: used in furniture, mattresses, car seats, etc.
  • Rigid Foam: used for building insulation, refrigeration equipment, etc.

2.2 Polyurethane coating

In polyurethane coatings, DMCHA can promote rapid curing of the coating and improve the adhesion and wear resistance of the coating. The following are the main application scenarios of DMCHA in polyurethane coatings:

  • Industrial coatings: used for coating substrates such as metal, wood, and plastic.
  • Building Paints: used in exterior walls, roofs, floors, etc.

2.3 Polyurethane elastomer

DMCHA is also widely used in the production of polyurethane elastomers. It can improve the mechanical properties and chemical resistance of the elastomer. The following are the main application scenarios of DMCHA in polyurethane elastomers:

  • Sealing: Sealing parts used in automobiles, machinery, electronics and other industries.
  • Tires: used for the manufacturing of high-performance tires.

III. Product parameters of DMCHA

3.1 Purity

parameter name Value/Description
Purity ?99%
Moisture ?0.1%
Impurities ?0.5%

3.2 Catalytic activity

parameter name Value/Description
Catalytic Efficiency High
Reaction temperature range 20-80°C
Reaction time Short

3.3 Security

parameter name Value/Description
Toxicity Low
Irritating Medium
Environmental Friendship High

IV. Advantages of DMCHA

4.1 High-efficiency Catalysis

DMCHA has high efficiency catalytic activity, which can significantly shorten the reaction time of polyurethane materials and improve production efficiency.

4.2 Multifunctionality

DMCHA is suitable for a variety of polyurethane formulations, including foams, coatings and elastomers, and has a wide range of application prospects.

4.3 Stability

DMCHA maintains stable catalytic activity over a wide temperature range and is suitable for different production environments.

4.4 Environmentally friendly

DMCHA has low toxicity and has little impact on the environment, which meets the requirements of modern industry for environmental protection.

V. Suggestions for the use of DMCHA

5.1 Addition amount

Application Scenario Recommended additions
Polyurethane foam 0.1-0.5%
Polyurethane coating 0.05-0.2%
Polyurethane elastomer 0.2-0.8%

5.2 How to use

  • Premix method: Premix DMCHA with polyol, then add isocyanate to react.
  • Direct addition method: Add DMCHA directly to the reaction system, stir evenly before reacting.

5.3 Notes

  • Storage: DMCHA should be stored in a cool, dry and well-ventilated place to avoid direct sunlight.
  • Operation: Wear protective gloves and glasses during operation to avoid direct contact with the skin and eyes.
  • Waste treatment: Waste should be disposed of in accordance with local environmental protection regulations to avoid pollution of the environment.

VI. Market prospects of DMCHA

With the wide application of polyurethane materials in various fields, DMCHA as an efficient and multifunctional catalyst, its market demand will continue to grow. In the future, with the improvement of environmental protection requirements and technological advancement, the application field of DMCHA will be further expanded and the market prospects will be broad.

7. Conclusion

DMCHA (N,N-dimethylcyclohexylamine) is an ideal catalyst suitable for a variety of polyurethane formulations, and has the advantages of high efficiency catalysis, versatility, stability and environmental friendliness. Through the rational use of DMCHA, the production efficiency and product quality of polyurethane materials can be significantly improved. With the growth of market demand and technological advancement, DMCHA’s application prospects in the polyurethane industry will be broader.

The above is a detailed introduction about DMCHA, I hope it will be helpful to you. If you have any questions or need further information, please feel free to contact us.

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The role of DMCHA (N,N-dimethylcyclohexylamine) in improving the softness and comfort of polyurethane elastomers

3月 12th, 2025 News

The role of DMCHA (N,N-dimethylcyclohexylamine) in improving the softness and comfort of polyurethane elastomers

Introduction

Polyurethane elastomer is a polymer material widely used in the fields of industry, medical care, daily life, etc. Its excellent mechanical properties, wear resistance, chemical resistance and adjustable hardness make it ideal for many products. However, with the increase in people’s requirements for comfort and softness, how to further optimize the performance of polyurethane elastomers has become the focus of research. As a highly efficient catalyst and modifier, N,N-dimethylcyclohexylamine (DMCHA) plays an important role in improving the softness and comfort of polyurethane elastomers. This article will discuss in detail the mechanism of action, application scenarios, product parameters and its impact on the performance of polyurethane elastomers.

1. Basic characteristics of DMCHA

1.1 Chemical structure and properties

DMCHA (N,N-dimethylcyclohexylamine) is an organic amine compound with its chemical structure as follows:

Chemical Name Molecular Formula Molecular Weight Appearance Boiling point (?) Density (g/cm³)
N,N-dimethylcyclohexylamine C8H17N 127.23 Colorless transparent liquid 160-162 0.85-0.87

DMCHA has the following characteristics:

  • High catalytic activity: DMCHA is a highly efficient polyurethane reaction catalyst that can significantly accelerate the reaction of isocyanate with polyols.
  • Low Volatility: DMCHA has a higher boiling point and low volatility, and is suitable for use in high temperature environments.
  • Good solubility: DMCHA can be compatible with a variety of organic solvents and polyurethane raw materials, making it easy to use in formulas.

1.2 The role of DMCHA in polyurethane reaction

DMCHA is mainly used as a catalyst during the synthesis of polyurethane. Its mechanism of action is as follows:

  • Accelerating reaction: DMCHA can promote isocyanates and polyolsReaction, shorten reaction time and improve production efficiency.
  • Adjust the reaction rate: By adjusting the dosage of DMCHA, the reaction rate of polyurethane can be controlled, thereby optimizing the performance of the material.
  • Improving material properties: DMCHA not only acts as a catalyst, but also affects the microstructure of polyurethane through its molecular structure, thereby improving the softness and comfort of the material.

2. Effect of DMCHA on the softness of polyurethane elastomers

2.1 Definition and importance of softness

Softness is an important indicator for measuring the ability of a material to deform when subjected to stress. For polyurethane elastomers, softness directly affects its touch, comfort and application range. For example, in insoles, mattresses, medical protective gear and other products, high-softness polyurethane elastomers can provide better fit and comfort.

2.2 Mechanism of DMCHA to improve softness

DMCHA improves the softness of polyurethane elastomers by:

  • Modify crosslink density: DMCHA can affect the crosslink density of polyurethane molecular chains. Lower crosslinking density will make the material softer.
  • Optimize molecular chain arrangement: The molecular structure of DMCHA helps to uniformly arrange the polyurethane molecular chains, reduces hard segment aggregation, thereby improving the softness of the material.
  • Reduce the glass transition temperature (Tg): DMCHA can reduce the Tg of polyurethane, allowing the material to show better flexibility at room temperature.

2.3 Comparison of experimental data and effects

The following table shows the effect of different DMCHA dosages on the softness of polyurethane elastomers:

DMCHA dosage (%) Shore A Tension Strength (MPa) Elongation of Break (%) Softness Evaluation
0 85 25 300 Hard
0.5 75 22 350 Moderate
1.0 65 20 400 Softer
1.5 55 18 450 very soft

It can be seen from the table that with the increase of DMCHA usage, the hardness of the polyurethane elastomer gradually decreases and the softness is significantly improved.

III. Effect of DMCHA on the comfort of polyurethane elastomers

3.1 Definition and influencing factors

Comfort refers to the physiological and psychological pleasure provided by the material to the user during use. For polyurethane elastomers, comfort is mainly affected by the following factors:

  • Softness: Soft material can better fit the human body curve and reduce pressure points.
  • Breathability: Good breathability helps sweat and heat dissipate, and improves comfort.
  • Resilience: High resilience can provide better support and shock absorption.

3.2 Mechanisms of DMCHA to Improve Comfort

DMCHA improves the comfort of polyurethane elastomers by:

  • Improving softness: As mentioned earlier, DMCHA can significantly reduce the hardness of the material and make it softer.
  • Optimize Microstructure: DMCHA helps to form a uniform microporous structure and improves the breathability of the material.
  • Enhanced Resilience: DMCHA can adjust the elasticity of the polyurethane molecular chain, so that the material will quickly return to its original state after being subjected to stress.

3.3 Comparison of experimental data and effects

The following table shows the impact of different DMCHA dosages on the comfort-related properties of polyurethane elastomers:

DMCHA dosage (%) Breathability (cm³/cm²·s) Rounce rate (%) Comfort Evaluation
0 0.5 60 General
0.5 0.8 70 Better
1.0 1.2 80 Excellent
1.5 1.5 85 Excellent

It can be seen from the table that with the increase of DMCHA usage, the breathability and rebound rate of the polyurethane elastomer have been significantly improved, and the comfort is significantly improved.

IV. Performance of DMCHA in different application scenarios

4.1 Shoe material

In the field of shoe materials, polyurethane elastomers are commonly used to make insoles and midsoles. The addition of DMCHA can significantly improve the softness and resilience of the shoe material, providing users with a better wearing experience.

4.2 Mattress

In mattresses, polyurethane elastomers are used to make comfort layers. DMCHA can improve the softness and breathability of the material, make the mattress more fit with the human body curve and improve sleep quality.

4.3 Medical protective gear

In medical protective gear, polyurethane elastomers need to have good flexibility and support. The addition of DMCHA can make the material softer while maintaining sufficient strength to provide patients with a comfortable wearing experience.

V. Suggestions and precautions for the use of DMCHA

5.1 Recommendations for use

  • Doing control: The dosage of DMCHA should be adjusted according to the specific application scenario, and the recommended dosage is usually 0.5%-1.5%.
  • Combination with other additives: DMCHA can be used in combination with other catalysts, foaming agents, etc. to further optimize the performance of polyurethane elastomers.
  • Process Optimization: When using DMCHA, attention should be paid to controlling the reaction temperature and stirring speed to ensure the stability of material properties.

5.2 Notes

  • Storage conditions: DMCHA should be stored in a cool and dry environment to avoid contact with strong acids and strong oxidants.
  • Safety Protection: DMCHA is irritating. Protective gloves and glasses should be worn during operation to avoid direct contact with the skin and eyes.

VI. Summary

DMCHA, as an efficient catalyst and modifier, plays an important role in improving the softness and comfort of polyurethane elastomers. By adjusting the crosslinking density, optimizing the molecular chain arrangement and reducing the glass transition temperature, DMCHA can significantly improve the softness, breathability and resilience of the polyurethane elastomer, thereby providing users with a more comfortable user experience. In different application scenarios, the performance of DMCHA has been widely recognized. In the future, with the continuous improvement of material performance requirements, DMCHA’s application prospects in polyurethane elastomers will be broader.

Through the detailed analysis of this article, I believe that readers have a deeper understanding of the role of DMCHA in improving the softness and comfort of polyurethane elastomers. It is hoped that these contents can provide valuable reference for research and application in related fields.

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DMCHA (N,N-dimethylcyclohexylamine): an economical catalyst that effectively reduces production costs

3月 12th, 2025 News

DMCHA (N,N-dimethylcyclohexylamine): an economical catalyst that effectively reduces production costs

Introduction

In chemical production, the selection of catalyst plays a crucial role in production efficiency and cost control. As an economical catalyst, N,N-dimethylcyclohexylamine (DMCHA) has been widely used in many fields in recent years. This article will introduce the characteristics, application areas, product parameters and their economic advantages in production in detail, helping readers to fully understand this efficient catalyst.

1. Basic characteristics of DMCHA

1.1 Chemical structure

The chemical name of DMCHA is N,N-dimethylcyclohexylamine, and its molecular formula is C8H17N. It is a colorless to light yellow liquid with a typical amine odor. The molecular structure of DMCHA contains cyclohexane rings and two methyl substituted amino groups, which imparts its unique chemical properties.

1.2 Physical Properties

parameters value
Molecular Weight 127.23 g/mol
Boiling point 160-162°C
Melting point -60°C
Density 0.85 g/cm³
Flashpoint 45°C
Solution Easy soluble in organic solvents, slightly soluble in water

1.3 Chemical Properties

DMCHA is highly alkaline and can react with acid to form the corresponding salt. It is stable at high temperatures, not easy to decompose, and is suitable for high temperature reactions. In addition, DMCHA also has good solubility and reactivity, and can be used as a catalyst or additive in various chemical reactions.

2. Application areas of DMCHA

2.1 Polyurethane foam production

DMCHA is used as a catalyst in the production of polyurethane foam, and can effectively promote the reaction between isocyanate and polyol and accelerate the formation of foam. Its efficient catalytic performance shortens the production cycle, thereby reducing production costs.

Application Fields Function advantage
Polyurethane foam Catalyzer Accelerate the reaction speed and shorten the production cycle
Coating Adjuvant Improve the adhesion and durability of the paint
Adhesive Catalyzer Enhance the bonding strength and improve production efficiency
Medicine Intermediate Reaction medium Improve reaction selectivity and reduce by-products

2.2 Coatings and Adhesives

In the production of coatings and adhesives, DMCHA as an additive can improve the adhesion and durability of the product. Its excellent solubility and reactive activity make the coatings and adhesives more uniform during the construction process, improving the overall quality of the product.

2.3 Medical Intermediate

DMCHA acts as a reaction medium in the synthesis of pharmaceutical intermediates, which can improve the selectivity of the reaction and reduce the generation of by-products. Its stable chemical properties make the reaction process more controllable and improves the purity and yield of the product.

3. DMCHA product parameters

3.1 Industrial DMCHA

parameters value
Purity ?99%
Moisture ?0.1%
Color ?50 APHA
Acne ?0.1 mg KOH/g
Alkaline value 430-470 mg KOH/g

3.2 Pharmaceutical-grade DMCHA

parameters value
Purity ?99.5%
Moisture ?0.05%
Color ?20 APHA
Acne ?0.05 mg KOH/g
Alkaline value 440-460 mg KOH/g

4. Economic Advantages of DMCHA

4.1 Reduce production costs

DMCHA as a highly efficient catalyst can significantly shorten the reaction time and improve production efficiency. Its excellent catalytic properties reduce the energy and raw materials required during the production process, thereby reducing production costs.

4.2 Improve product quality

DMCHA’s excellent performance in multiple application fields has significantly improved the quality of the final product. For example, in the production of polyurethane foam, the use of DMCHA improves the uniformity and stability of the foam and improves the market competitiveness of the product.

4.3 Environmental performance

DMCHA produces less waste during the production process, is easy to deal with, and meets environmental protection requirements. Its low toxicity and low volatility make the production environment safer and reduces the harm to workers’ health.

5. Precautions for using DMCHA

5.1 Storage conditions

DMCHA should be stored in a cool, dry, well-ventilated place away from fire and heat sources. The storage temperature should be controlled between 0-30°C to avoid direct sunlight.

5.2 Safe Operation

Wear protective gloves, goggles and protective clothing when operating DMCHA to avoid direct contact with the skin and eyes. If you are not careful, you should immediately rinse with a lot of clean water and seek medical help.

5.3 Waste treatment

DMCHA waste should be disposed of in accordance with local environmental regulations to avoid pollution to the environment. Incineration or chemical treatment is recommended to ensure that the waste is safely disposed of.

6. DMCHA market prospects

With the continuous development of the chemical industry, the demand for efficient and economical catalysts is increasing. With its excellent performance and wide application fields, DMCHA has a broad market prospect. In the future, with the advancement of technology and the expansion of applications, DMCHA is expected to play an important role in more fields and bring greater economic benefits to chemical production.

7. Conclusion

DMCHA, as an economical catalyst, has demonstrated its unique advantages in many fields. By introducing its basic characteristics, application fields, product parameters and economic advantages in detail, this article aims to help readers comprehensivelyExplain the value and application potential of DMCHA. In the future, with the continuous advancement of technology, DMCHA is expected to play an important role in more fields and bring greater economic benefits to chemical production.

Through the detailed introduction of the above content, I believe readers have a deeper understanding of DMCHA. DMCHA is not only an efficient catalyst, but also an economical product that can significantly reduce production costs. I hope this article can provide readers with valuable reference in practical applications.

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