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DMCHA (N,N-dimethylcyclohexylamine): a choice to meet the market demand of high-standard polyurethane in the future

3月 12th, 2025 News

DMCHA (N,N-dimethylcyclohexylamine): a choice to meet the market demand for high-standard polyurethane in the future

Introduction

With the rapid development of global industry, polyurethane materials have been widely used in the fields of construction, automobile, furniture, electronics, medical care and other fields due to their excellent performance. The properties of polyurethane materials depend to a large extent on the catalysts used in their production process. As a highly efficient catalyst, N,N-dimethylcyclohexylamine (DMCHA) has attracted much attention in the polyurethane industry in recent years. This article will introduce in detail the characteristics, applications, market prospects of DMCHA and its important role in meeting the market demand for high-standard polyurethane in the future.

1. Basic characteristics of DMCHA

1.1 Chemical structure

The chemical name of DMCHA is N,N-dimethylcyclohexylamine, the molecular formula is C8H17N, and the molecular weight is 127.23 g/mol. Its structure is:

 CH3
       |
  C6H11-N-CH3

DMCHA is a colorless to light yellow liquid with a unique amine odor. It is easily soluble in water and most organic solvents and has good chemical stability.

1.2 Physical Properties

Properties Value/Description
Appearance Colorless to light yellow liquid
Density (20°C) 0.85 g/cm³
Boiling point 160-162°C
Flashpoint 45°C
Vapor Pressure (20°C) 0.2 kPa
Solution Easy soluble in water, etc.
Stability Stabilize at room temperature to avoid strong oxidants

1.3 Chemical Properties

DMCHA is a tertiary amine compound with strong alkalinity. It can react with acid to form salts, or it can react with isocyanate to form polyurethane. The alkalinity of DMCHA allows it to exhibit excellent catalytic properties in the polyurethane reaction.

2. Application of DMCHA in polyurethane

2.1 Basic reaction of polyurethane

The synthesis of polyurethane mainly involves two reactions: the addition reaction of isocyanate and polyol and the reaction of isocyanate and water. As a catalyst, DMCHA can accelerate the progress of these two reactions, thereby improving the production efficiency of polyurethane.

2.1.1 Reaction of isocyanate and polyol

Isocyanate (R-NCO) reacts with polyol (R’-OH) to form polyurethane (R-NH-COO-R’). DMCHA promotes the reaction between isocyanate and polyol by providing an alkaline environment, shortens the reaction time and improves the reaction efficiency.

2.1.2 Reaction of isocyanate and water

Isocyanate reacts with water to form carbon dioxide and amine (R-NH2). DMCHA can accelerate this reaction, thus playing a key role in the production of foamed polyurethane.

2.2 Application of DMCHA in polyurethane foam

Polyurethane foam is a widely used form of polyurethane materials and is widely used in furniture, mattresses, car seats, building insulation and other fields. As a catalyst, DMCHA has the following advantages in the production of polyurethane foam:

  • High-efficiency Catalysis: DMCHA can significantly accelerate the reaction between isocyanate and polyol, shorten the foaming time, and improve production efficiency.
  • Good foaming performance: DMCHA can promote the reaction between isocyanate and water, generate carbon dioxide gas, and form a uniform foam structure.
  • Excellent foam stability: DMCHA can adjust the open and closed cell structure of the foam, improving the mechanical properties and durability of the foam.

2.3 Application of DMCHA in polyurethane elastomers

Polyurethane elastomers have excellent wear resistance, elasticity and chemical resistance, and are widely used in seals, tires, soles and other fields. DMCHA has the following advantages in the production of polyurethane elastomers:

  • Rapid Curing: DMCHA can accelerate the reaction between isocyanate and polyol, shorten the curing time and improve production efficiency.
  • Excellent mechanical properties: DMCHA can adjust the cross-linking density of polyurethane elastomers and improve its mechanical properties and durability.
  • Good processing performance: DMCHA can improve the flowability of polyurethane elastomers and make them easy to process and mold.

2.4 The response of DMCHA in polyurethane coatingsUse

Polyurethane coatings have excellent weather resistance, wear resistance and decorative properties, and are widely used in construction, automobile, furniture and other fields. DMCHA has the following advantages in the production of polyurethane coatings:

  • Rapid Curing: DMCHA can accelerate the reaction between isocyanate and polyol, shorten the curing time of the coating, and improve construction efficiency.
  • Excellent adhesion: DMCHA can improve the adhesion between polyurethane coatings and substrates and enhance the durability of the coating.
  • Good leveling: DMCHA can improve the leveling of the paint, making it easy to apply and form a smooth coating.

III. Market prospects of DMCHA

3.1 Global Polyurethane Market Overview

According to market research data, the global polyurethane market has maintained steady growth over the past few years. It is expected that with the rapid development of construction, automobile, electronics and other industries, the polyurethane market will continue to maintain a growth trend in the next few years. In 2022, the global polyurethane market size will be approximately US$60 billion, and is expected to reach US$80 billion by 2027, with an average annual growth rate of approximately 5.5%.

3.2 Market demand for DMCHA

With the rapid growth of the polyurethane market, the demand for efficient catalysts is also increasing. As an efficient and environmentally friendly catalyst, DMCHA has broad market prospects in the polyurethane industry. It is expected that the market demand for DMCHA will maintain an average annual growth rate of more than 6% in the next few years.

3.3 DMCHA’s competitive advantage

DMCHA has the following competitive advantages compared to other catalysts:

  • High-efficiency Catalysis: DMCHA can significantly accelerate the polyurethane reaction and improve production efficiency.
  • Environmental Performance: DMCHA will not produce harmful by-products in the polyurethane reaction and meets environmental protection requirements.
  • Multifunctionality: DMCHA is suitable for the production of a variety of polyurethane materials and has a wide range of application prospects.

IV. Production and quality control of DMCHA

4.1 Production process

DMCHA production mainly uses the methylation reaction of cyclohexylamine and formaldehyde. The specific process steps are as follows:

  1. Raw Material Preparation: Mix cyclohexylamine and formaldehyde in a certain proportion.
  2. Reaction process: Under the action of the catalyst, cyclohexylamine undergoes methylation reaction with formaldehyde to form DMCHA.
  3. Separation and purification: DMCHA is isolated and purified by distillation, extraction and other methods.
  4. Finished Product Packaging: Pack the purified DMCHA and store it in a cool and dry place.

4.2 Quality Control

To ensure the product quality of DMCHA, strict quality control is required during the production process. The main control indicators include:

Indicators Standard Value Detection Method
Appearance Colorless to light yellow liquid Visual Test
Purity ?99.0% Gas Chromatography
Moisture ?0.1% Karl Fischer Law
Acne ?0.1 mg KOH/g Acidal-base titration method
Density (20°C) 0.84-0.86 g/cm³ Density meter method
Boiling point 160-162°C Boiling point determination method

4.3 Safety and Environmental Protection

DMCHA should pay attention to the following safety and environmental protection matters during production and use:

  • Safe Operation: DMCHA has a certain volatile nature. Protective gloves, masks, etc. should be worn during operation to avoid direct contact with the skin and inhalation of steam.
  • Storage Conditions: DMCHA should be stored in a cool, well-ventilated place, away from fire sources and strong oxidants.
  • Environmental Treatment: The waste liquid and waste gas generated during the production process should be treated environmentally to avoid pollution to the environment.

V. Future development trends of DMCHA

5.1 Green and environmentally friendly catalyst

As the increasingly strict environmental regulations, green environmental protection catalysts have becomeDevelopment trends of the polyurethane industry. As an environmentally friendly catalyst, DMCHA will play a more important role in the polyurethane industry in the future.

5.2 High-performance polyurethane material

With the advancement of technology, the performance requirements for polyurethane materials are becoming higher and higher. As a high-efficiency catalyst, DMCHA can meet the production needs of high-performance polyurethane materials and will be widely used in the field of high-end polyurethane materials in the future.

5.3 Intelligent production

With the advancement of Industry 4.0, intelligent production has become the development direction of the polyurethane industry. The production and application of DMCHA will gradually be intelligent, improving production efficiency and product quality.

VI. Conclusion

DMCHA, as an efficient and environmentally friendly catalyst, has wide application prospects in the polyurethane industry. With the rapid growth of the global polyurethane market, the market demand for DMCHA will continue to increase. In the future, DMCHA will play a more important role in green and environmentally friendly, high-performance polyurethane materials and intelligent production, etc., to meet the needs of the high-standard polyurethane market in the future.

Through the introduction of this article, I believe that readers have a deeper understanding of the characteristics and applications of DMCHA. As an important catalyst for the polyurethane industry, DMCHA will continue to play its important role in future development and promote the continuous progress of the polyurethane industry.

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Analysis of the application and advantages of DMCHA (N,N-dimethylcyclohexylamine) in environmentally friendly polyurethane foam

3月 12th, 2025 News

Analysis of the application and advantages of DMCHA (N,N-dimethylcyclohexylamine) in environmentally friendly polyurethane foam

Catalog

  1. Introduction
  2. The basic properties of DMCHA
  3. Overview of environmentally friendly polyurethane foam
  4. The application of DMCHA in environmentally friendly polyurethane foam
  5. Analysis of the advantages of DMCHA in environmentally friendly polyurethane foam
  6. Product parameters and performance comparison
  7. Conclusion

1. Introduction

With the increasing global environmental awareness, environmentally friendly materials are being used in various fields more and more widely. As an important polymer material, polyurethane foam is widely used in furniture, construction, automobiles, packaging and other fields. However, traditional polyurethane foams release harmful substances during production, causing pollution to the environment. Therefore, the development of environmentally friendly polyurethane foam has become an important research direction in the industry. N,N-dimethylcyclohexylamine (DMCHA) is a highly efficient catalyst and shows unique advantages in environmentally friendly polyurethane foams. This article will discuss in detail the application and advantages of DMCHA in environmentally friendly polyurethane foam.

2. Basic properties of DMCHA

2.1 Chemical structure

The chemical name of DMCHA is N,N-dimethylcyclohexylamine, the molecular formula is C8H17N, and the molecular weight is 127.23 g/mol. Its chemical structure is as follows:

 CH3
       |
  N-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2
       |
      CH3

2.2 Physical Properties

DMCHA is a colorless to light yellow liquid with a unique amine odor. Its main physical properties are shown in the following table:

Properties value
Boiling point 160-162°C
Density 0.85 g/cm³
Flashpoint 45°C
Solution Easy soluble in water and organic solvents
Steam Pressure 0.5 mmHg at 20°C

2.3 Chemical Properties

DMCHA is a strongly basic organic amine with good catalytic properties. It can react with isocyanate to promote the formation of polyurethane foam. In addition, DMCHA also has good thermal and chemical stability, and is suitable for a variety of reaction conditions.

3. Overview of environmentally friendly polyurethane foam

3.1 Basic concepts of polyurethane foam

Polyurethane foam is a polymer material produced by chemical reaction of polyols and isocyanates. According to its structure and properties, polyurethane foam can be divided into rigid foam, soft foam and semi-rigid foam. Polyurethane foam has excellent properties such as lightweight, heat insulation, sound insulation, and buffering, and is widely used in various fields.

3.2 Definition of environmentally friendly polyurethane foam

Environmentally friendly polyurethane foam refers to polyurethane foam that has less environmental impact during production and use. Compared with traditional polyurethane foam, environmentally friendly polyurethane foam has the following characteristics:

  • Use environmentally friendly raw materials to reduce the release of harmful substances.
  • Reduce energy consumption and waste emissions during production.
  • The product has good durability and recyclability during use.

3.3 Application fields of environmentally friendly polyurethane foam

Environmental-friendly polyurethane foam is widely used in the following fields:

  • Construction Industry: used for wall insulation, roof insulation, floor sound insulation, etc.
  • Furniture Industry: Filling materials for sofas, mattresses, seats and other furniture.
  • Auto industry: used in car seats, instrument panels, door linings, etc.
  • Packaging Industry: Used for buffer packaging for electronic equipment, precision instruments, etc.

4. Application of DMCHA in environmentally friendly polyurethane foam

4.1 The mechanism of action of DMCHA as a catalyst

DMCHA mainly plays a catalyst in the synthesis of polyurethane foam. Its mechanism of action is as follows:

  1. Promote the reaction between isocyanate and polyol: DMCHA can accelerate the reaction between isocyanate and polyol to form polyurethane prepolymers.
  2. Control reaction rate: The catalytic action of DMCHA can effectively control the reaction rate, avoiding too fast or too slow reaction, thereby ensuring the uniformity of the foam structure.
  3. Adjust the holes of foamDiameter and density: By adjusting the amount of DMCHA, the pore size and density of the foam can be controlled, thereby obtaining polyurethane foam with different properties.

4.2 Specific application of DMCHA in environmentally friendly polyurethane foam

The application of DMCHA in environmentally friendly polyurethane foam is mainly reflected in the following aspects:

  1. Rigid polyurethane foam: DMCHA, as a catalyst, can effectively promote the formation of rigid polyurethane foam and improve the strength and thermal insulation properties of the foam.
  2. Soft polyurethane foam: In soft polyurethane foam, DMCHA can adjust the softness and elasticity of the foam, making it more suitable for use in furniture and car seats.
  3. Semi-rigid polyurethane foam: The application of DMCHA in semi-rigid polyurethane foam can balance the hardness and elasticity of foam, and is suitable for packaging and construction fields.

4.3 Comparison of DMCHA with other catalysts

Compared with traditional catalysts, DMCHA has the following advantages:

  • High efficiency: DMCHA has high catalytic efficiency and can significantly shorten the reaction time.
  • Environmentality: DMCHA releases fewer harmful substances during production and use, and meets environmental protection requirements.
  • Stability: DMCHA has good thermal stability and chemical stability, and is suitable for a variety of reaction conditions.

5. Analysis of the advantages of DMCHA in environmentally friendly polyurethane foam

5.1 Environmental performance

The application of DMCHA in environmentally friendly polyurethane foams significantly reduces the release of harmful substances during production. Compared with traditional catalysts, the use of DMCHA can reduce emissions of volatile organic compounds (VOCs), thereby reducing pollution to the environment.

5.2 Catalytic efficiency

DMCHA has efficient catalytic properties and can significantly shorten the molding time of polyurethane foam. This not only improves production efficiency, but also reduces energy consumption and meets the requirements of sustainable development.

5.3 Foam performance

DMCHA can effectively adjust the pore size and density of polyurethane foam, thereby obtaining foam materials of different properties. By adjusting the amount of DMCHA, high-strength, high elasticity, and high heat insulation polyurethane foam can be obtained to meet the needs of different application fields.

5.4 Economy

DMCHA is relatively expensive, but its efficient catalytic and environmentally friendly properties can significantly reduce production costs. In addition, the use of DMCHA can also reduce waste emissions and further reduce environmental governance costs.

6. Product parameters and performance comparison

6.1 Product parameters of DMCHA

The following are the main product parameters of DMCHA:

parameters value
Appearance Colorless to light yellow liquid
Purity ?99%
Boiling point 160-162°C
Density 0.85 g/cm³
Flashpoint 45°C
Solution Easy soluble in water and organic solvents
Steam Pressure 0.5 mmHg at 20°C

6.2 Comparison of performance of environmentally friendly polyurethane foam

The following is a comparison of the properties of environmentally friendly polyurethane foams prepared using DMCHA and traditional catalysts:

Performance Foot using DMCHA Foodles using traditional catalysts
Density (kg/m³) 30-50 30-50
Compressive Strength (kPa) 150-200 120-180
Thermal conductivity (W/m·K) 0.020-0.025 0.025-0.030
Elastic recovery rate (%) 90-95 85-90
VOC emissions (mg/m³) <50 100-150

6.3 Performance requirements for different application fields

The following are the performance requirements for environmentally friendly polyurethane foams in different application fields:

Application Fields Density (kg/m³) Compressive Strength (kPa) Thermal conductivity (W/m·K) Elastic recovery rate (%)
Construction Industry 30-50 150-200 0.020-0.025 90-95
Furniture Industry 20-40 100-150 0.025-0.030 85-90
Auto Industry 40-60 200-250 0.020-0.025 90-95
Packaging Industry 50-70 250-300 0.025-0.030 85-90

7. Conclusion

DMCHA, as an efficient catalyst, shows unique advantages in environmentally friendly polyurethane foams. Its efficient catalytic properties, environmentally friendly properties and economy make it an ideal choice for environmentally friendly polyurethane foam. By adjusting the amount of DMCHA, polyurethane foam with different properties can be obtained to meet the application needs of construction, furniture, automobiles, packaging and other fields. With the increase of environmental awareness and the advancement of technology, DMCHA’s application prospects in environmentally friendly polyurethane foam will be broader.

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How to use DMCHA (N,N-dimethylcyclohexylamine) to enhance the softness and comfort of polyurethane products

3月 12th, 2025 News

Use DMCHA (N,N-dimethylcyclohexylamine) to enhance the softness and comfort of polyurethane products

Introduction

Polyurethane (PU) is a polymer material widely used in daily life and industrial fields. It is highly favored for its excellent mechanical properties, wear resistance, chemical resistance and processability. However, as consumers’ requirements for product comfort and softness continue to increase, how to further improve the softness and comfort of polyurethane products has become an important research direction. As a highly efficient catalyst and modifier, N,N-dimethylcyclohexylamine (DMCHA) has significant application potential in the production of polyurethane products. This article will discuss in detail how to use DMCHA to improve the softness and comfort of polyurethane products, covering its mechanism of action, application methods, product parameters and actual cases.

1. Basic characteristics and mechanism of DMCHA

1.1 Chemical structure and characteristics of DMCHA

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 159-161 0.85-0.87

DMCHA has the following characteristics:

  • High-efficiency Catalyticity: DMCHA can significantly accelerate the reaction between isocyanate and polyol in the polyurethane reaction and shorten the curing time.
  • 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 mix.

1.2 The mechanism of action of DMCHA in polyurethane

The role of DMCHA in polyurethane products is mainly reflected in the following aspects:

  1. Catalytic Effect: DMCHA as a catalyst can accelerate isocyanic acidThe reaction of the esters and polyols promotes the growth and cross-linking of the polyurethane chain, thereby improving the mechanical properties of the material.
  2. Adjust the reaction rate: By adjusting the dosage of DMCHA, the reaction rate of polyurethane can be accurately controlled to avoid defects caused by excessive or slow reaction.
  3. Improve the microstructure: DMCHA can optimize the microstructure of polyurethane, making its molecular chain more uniform, thereby improving the softness and elasticity of the material.

2. Application method of DMCHA in polyurethane products

2.1 Process flow for adding DMCHA

In the production of polyurethane products, DMCHA is usually added to the starting material as a catalyst or modifier. The following is a typical process:

  1. Raw Material Preparation: Weigh polyols, isocyanates, DMCHA and other additives in proportion.
  2. Mix and stir: Mix the polyol and DMCHA to ensure uniform dispersion of the catalyst.
  3. Reaction molding: Mix the mixed raw materials with isocyanate and inject them into the mold for reaction molding.
  4. Post-treatment: Demold, trim and surface treatment of the molded products.

2.2 Addition of DMCHA and Effect

The amount of DMCHA added has a significant impact on the performance of polyurethane products. The following is the impact of different addition amounts on product performance:

DMCHA addition amount (wt%) Reaction time (min) Shore A Tension Strength (MPa) Elongation of Break (%) Softness Evaluation
0.1 15 85 25 300 General
0.3 10 75 22 400 Better
0.5 8 65 20 500 Excellent
0.8 6 60 18 550 Excellent

It can be seen from the table that with the increase of DMCHA addition, the hardness of polyurethane products decreases, and the softness and elongation of break are significantly improved.

3. DMCHA key technology to improve the softness and comfort of polyurethane products

3.1 Optimized formula design

By adjusting the ratio of polyol to isocyanate and combining with the catalytic action of DMCHA, polyurethane formulations with excellent flexibility and comfort can be designed. Here are two typical recipes:

Raw Material Name Formula A (wt%) Formula B (wt%)
Polyol 60 55
Isocyanate 35 40
DMCHA 0.5 0.8
Other additives 4.5 4.2

Formulation A is suitable for ordinary soft products, and Formulation B is suitable for high soft products.

3.2 Control reaction conditions

Reaction temperature and time have an important influence on the performance of polyurethane products. The following is a comparison of performance under different reaction conditions:

Reaction temperature (?) Reaction time (min) Shore A Softness Evaluation
60 10 70 Better
80 8 65 Excellent
100 6 60 Excellent

3.3 Surface treatment technology

Through surface treatment technology (such as coating, embossing, etc.), the comfort and aesthetics of polyurethane products can be further improved. The following is a comparison of the effects of the two surface treatment technologies:

Surface treatment technology Softness Evaluation Comfort Evaluation Aesthetic Evaluation
Coating Treatment Better Excellent Excellent
Embroidery Processing Excellent Excellent Better

IV. Application cases of DMCHA in different polyurethane products

4.1 Soft foam

Soft foam is one of the widely used types of polyurethane products and is often used in household products such as mattresses, sofas, etc. By adding DMCHA, the softness and resilience of the soft foam can be significantly improved.

Product Type DMCHA addition amount (wt%) Shore A Rounce rate (%) Comfort Evaluation
Ordinary soft foam 0.3 75 60 Better
High soft foam 0.5 65 70 Excellent

4.2 Elastomer

Polyurethane elastomers are widely used in soles, seals and other fields. By adding DMCHA, the flexibility and wear resistance of the elastomer can be improved.

Product Type DMCHA addition amount (wt%) Shore A Abrasion resistance (mm³) Comfort Evaluation
Ordinary Elastomer 0.2 80 50 General
High soft elastic body 0.4 70 40 Excellent

4.3 Coating material

Polyurethane coating materials are commonly used in the surface treatment of textiles and leather. By adding DMCHA, the softness and adhesion of the coating can be improved.

Product Type DMCHA addition amount (wt%) Adhesion (N/cm) Softness Evaluation
Ordinary Coating 0.1 5 General
High soft coating 0.3 6 Excellent

V. Summary and Outlook

DMCHA as an efficient catalyst and modifier has significant advantages in improving the softness and comfort of polyurethane products. By optimizing the formulation design, controlling the reaction conditions and adopting advanced surface treatment technology, the role of DMCHA can be fully utilized to produce high-quality polyurethane products that meet consumer needs. In the future, with the continuous development of materials science, DMCHA’s application prospects in the field of polyurethane will be broader.

The above content is a comprehensive analysis of using DMCHA to improve the softness and comfort of polyurethane products. I hope it will be helpful to relevant practitioners and researchers.

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