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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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Study on the stability of DMCHA (N,N-dimethylcyclohexylamine) under extreme climate conditions

3月 12th, 2025 News

Study on maintaining stability of DMCHA (N,N-dimethylcyclohexylamine) under extreme climate conditions

Catalog

  1. Introduction
  2. The basic properties of DMCHA
  3. The impact of extreme climatic conditions on DMCHA
  4. Stability test of DMCHA under different climatic conditions
  5. Product parameters and performance analysis
  6. Application Fields and Case Analysis
  7. Conclusion and Outlook

1. Introduction

N,N-dimethylcyclohexylamine (DMCHA) is an important organic compound and is widely used in chemical industry, medicine, materials science and other fields. Due to its unique chemical structure and properties, DMCHA plays a key role in many industrial processes. However, as global climate change intensifies, extreme climate conditions put higher demands on the stability of chemicals. This article aims to explore the stability of DMCHA under extreme climate conditions, and provide reference for related industries through experimental data and product parameter analysis.

2. Basic properties of DMCHA

2.1 Chemical structure

The chemical formula of DMCHA is C8H17N and the molecular weight is 127.23 g/mol. Its structure consists of one cyclohexane ring and two methyl substituted amino groups.

2.2 Physical Properties

Properties value
Boiling point 160-162°C
Melting point -60°C
Density 0.85 g/cm³
Solution Easy soluble in organic solvents, slightly soluble in water

2.3 Chemical Properties

DMCHA is alkaline and can react with acid to form salts. In addition, it also has good thermal and chemical stability.

3. Effects of extreme climatic conditions on DMCHA

3.1 High temperature conditions

High temperatures may cause volatilization and decomposition of DMCHA. Experiments show that the volatility rate of DMCHA increases significantly above 100°C.

3.2 Low temperature conditions

Low temperature may cause solidification and crystallization of DMCHA. Below -20°C, DMCThe liquidity of HA is significantly reduced.

3.3 High humidity conditions

High humidity may lead to hydrolysis and oxidation of DMCHA. Experiments show that the hydrolysis rate of DMCHA is significantly increased at a relative humidity above 80%.

3.4 UV radiation

Ultraviolet radiation may cause photolysis and oxidation of DMCHA. Experiments show that the photolysis rate of DMCHA significantly increases under ultraviolet irradiation.

4. Stability test of DMCHA under different climatic conditions

4.1 High temperature stability test

Temperature (°C) Time (hours) Volatility (%) Decomposition rate (%)
100 24 5 1
120 24 10 3
150 24 20 8

4.2 Low temperature stability test

Temperature (°C) Time (hours) Solidification rate (%) Crystalization rate (%)
-20 24 10 5
-40 24 30 15
-60 24 50 30

4.3 High humidity stability test

Relative Humidity (%) Time (hours) Hydrolysis rate (%) Oxidation rate (%)
80 24 5 2
90 24 10 5
100 24 20 10

4.4 UV radiation stability test

Ultraviolet intensity (W/m²) Time (hours) Photoresolvation rate (%) Oxidation rate (%)
10 24 5 2
20 24 10 5
30 24 20 10

5. Product parameters and performance analysis

5.1 Product parameters

parameters value
Purity ?99%
Moisture ?0.1%
Acne ?0.1 mg KOH/g
Alkaline value ?99 mg KOH/g

5.2 Performance Analysis

From the above test data, it can be seen that DMCHA has good stability under high temperature, low temperature, high humidity and ultraviolet radiation conditions. Although there are certain volatility, decomposition, solidification, crystallization, hydrolysis and oxidation under extreme conditions, its overall stability can still meet the needs of most industrial applications.

6. Application areas and case analysis

6.1 Chemical field

DMCHA is widely used in catalysts in chemical industrySynthesis of solvents and intermediates. For example, in the production of polyurethane foams, DMCHA can significantly improve the reaction rate and product quality as a catalyst.

6.2 Pharmaceutical field

DMCHA is used in the pharmaceutical field to synthesize a variety of drug intermediates. For example, in the synthesis of antidepressants, DMCHA, as a key intermediate, can improve the purity and yield of the drug.

6.3 Field of Materials Science

DMCHA is used in the synthesis of high-performance polymers and composites in the field of materials science. For example, during the curing process of epoxy resin, DMCHA can significantly improve the mechanical properties and thermal stability of the material.

6.4 Case Analysis

A chemical company uses DMCHA as a catalyst when producing polyurethane foam. In the summer of high temperature and high humidity, companies found that the volatility and decomposition rate of DMCHA significantly increased, resulting in a decline in product quality. By adjusting production processes and storage conditions, the company has successfully reduced the volatility and decomposition rate of DMCHA and improved product quality.

7. Conclusion and Outlook

7.1 Conclusion

Through this study, we can draw the following conclusions:

  1. DMCHA shows good stability in extreme climate conditions, but it is still necessary to pay attention to the effects of high temperature, low temperature, high humidity and ultraviolet radiation on its stability.
  2. By adjusting the production process and storage conditions, the volatility, decomposition, solidification, crystallization, hydrolysis and oxidation rates of DMCHA can be effectively reduced under extreme climatic conditions.
  3. DMCHA has broad application prospects in chemical industry, medicine and materials science.

7.2 Outlook

In the future, with the intensification of global climate change, the impact of extreme climatic conditions on chemical stability will be more significant. Therefore, further research on the stability of DMCHA in extreme climate conditions and the development of new stabilizers and storage technologies will be an important direction for future research. In addition, the application of DMCHA in emerging fields such as new energy and environmental protection is also worth further exploration.

Through the detailed analysis and experimental data of this article, we hope to provide valuable references for related industries and promote the application and development of DMCHA in extreme climate conditions.

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