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Breakthrough Progress and Application of DMCHA (N,N-dimethylcyclohexylamine) in the Field of Waterproof Materials

admin 3月 12th, 2025 News

Breakthrough Progress and Application of DMCHA (N,N-dimethylcyclohexylamine) in the Field of Waterproof Materials

Introduction

With the rapid development of the construction industry, the demand for waterproof materials is growing. Traditional waterproof materials have many shortcomings in performance, environmental protection and construction convenience. In recent years, N,N-dimethylcyclohexylamine (DMCHA) has made breakthrough progress in the field of waterproof materials as a new chemical additive. This article will introduce in detail the characteristics of DMCHA, its application in waterproof materials, product parameters and future development directions.

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. Its structure is:

 CH3
       |
  C6H11-N-CH3

1.2 Physical Properties

Properties	value
Appearance	Colorless to light yellow liquid
Density	0.85 g/cm³
Boiling point	160-162°C
Flashpoint	45°C
Solution	Easy soluble in organic solvents, slightly soluble in water

1.3 Chemical Properties

DMCHA has the following chemical properties:

Basic: DMCHA is a weak alkali that can react with acid to form a salt.
Stability: Stable at room temperature, but decomposition may occur under high temperature or strong acid and alkali conditions.
Reaction activity: DMCHA can react with a variety of organic compounds and is often used in catalysis, cross-linking and other reactions.

2. Application of DMCHA in waterproofing materials

2.1 Waterproof coating

2.1.1 Mechanism of action

DMCHA is mainly used as a catalyst and a crosslinker in waterproof coatings. Its mechanism of action is as follows:

Catalytic Effect: DMCHA can accelerate the curing reaction of polyurethane, epoxy resin and other materials, and improve the film formation speed and strength of the coating.
Crosslinking: DMCHA can react with active groups in the coating to form a three-dimensional network structure, enhancing the water resistance and mechanical properties of the coating.

2.1.2 Product parameters

parameters	value
Current time	2-4 hours
Water resistance	>96 hours
Tension Strength	>10 MPa
Elongation	>300%
Weather resistance	>1000 hours

2.2 Waterproof coil

2.2.1 Mechanism of action

DMCHA is mainly used as a plasticizer and stabilizer in waterproof coils. Its mechanism of action is as follows:

Plasticization effect: DMCHA can improve the flexibility and ductility of the coil, making it less likely to break during construction.
Stable effect: DMCHA can inhibit the aging of the coil under high temperature or ultraviolet irradiation and extend its service life.

2.2.2 Product parameters

parameters	value
Thickness	1.5-2.0 mm
Tension Strength	>15 MPa
Elongation	>400%
Heat resistance	>120°C
Dropping resistance	<-40°C

2.3 Waterproof mortar

2.3.1 Mechanism of action

DMCHA is mainly used as a dispersant and reinforcer in waterproof mortar. Its mechanism of action is as follows:

Dispersion: DMCHA can improve the dispersion of various components in the mortar and improve the uniformity and compactness of the mortar.
Enhancement: DMCHA can react with cement particles in the mortar to form a dense network structure, enhancing the strength and waterproofing properties of the mortar.

2.3.2 Product parameters

parameters	value
Compressive Strength	>30 MPa
Fracture Strength	>6 MPa
Water absorption	<5%
Water resistance	>72 hours
Weather resistance	>500 hours

3. Advantages of DMCHA in waterproofing materials

3.1 Environmental protection

DMCHA is a low-toxic and low-volatility chemical that meets the environmental protection requirements of modern building materials. It will not produce harmful gases during its use and are friendly to construction workers and the environment.

3.2 Construction convenience

DMCHA can significantly improve the construction performance of waterproof materials, such as shortening curing time, improving the leveling of the paint, enhancing the flexibility of the coil, etc., thereby reducing construction difficulty and cost.

3.3 Performance superiority

DMCHA can significantly improve the performance indicators of waterproof materials, such as water resistance, weather resistance, mechanical strength, etc., so that it can maintain good waterproofing effect in harsh environments.

IV. Future development direction of DMCHA in waterproof materials

4.1 Multifunctional

The future DMCHA will not only be limited to a single function in waterproof materials, but will develop towards multifunctionality. For example, DMCHA modified waterproof materials with functions such as self-healing, antibacterial, and antistatic.

4.2 Intelligent

With the development of smart materials, DMCHA is expected to combine with smart materials to develop intelligent waterproof materials with induction and response functions. For example, smart coatings that can automatically adjust waterproofing performance based on environmental humidity.

4.3 Greening

In the future, DMCHA will pay more attention to green and environmental protection, develop more environmentally friendly and degradable DMCHA derivatives to reduce environmental pollution.

V. Conclusion

DMCHA, as a new chemical additive, has shown great application potential in the field of waterproof materials. Its excellent catalytic, crosslinking, plasticizing, dispersing and other properties have significantly improved the performance indicators of waterproof materials. In the future, with the continuous advancement of technology, DMCHA will make more breakthroughs in multifunctionalization, intelligence, greening, etc., bringing more innovation and changes to the construction waterproofing industry.

The above content introduces the breakthrough progress and application of DMCHA in the field of waterproof materials in detail, covering its basic characteristics, application fields, product parameters and future development directions. Through the form of tables and data, the content is more intuitive and easy to understand. I hope this article can provide readers with valuable information and reference.

DMCHA (N,N-dimethylcyclohexylamine): The driving force for the development of the polyurethane industry in a greener direction

admin 3月 12th, 2025 News

DMCHA (N,N-dimethylcyclohexylamine): The driving force for the development of the polyurethane industry in a greener direction

Introduction

With the increasing global attention to environmental protection and sustainable development, all walks of life are seeking more environmentally friendly and efficient solutions. As an important part of the chemical industry, the polyurethane industry is also actively exploring new paths for green development. As a highly efficient catalyst, N,N-dimethylcyclohexylamine (DMCHA) is becoming an important driving force for the development of the polyurethane industry in a greener direction. This article will introduce in detail the characteristics, applications and their important role in the polyurethane industry.

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 unique amine odor. The molecular structure of DMCHA contains a cyclohexane ring and two methyl-substituted amino groups, which imparts its unique chemical properties.

1.2 Physical Properties

Properties	value
Molecular Weight	127.23 g/mol
Boiling point	160-162°C
Density	0.86 g/cm³
Flashpoint	45°C
Solution	Easy soluble in water and organic solvents

1.3 Chemical Properties

DMCHA is a strong basic compound with good catalytic properties. It is able to react with a variety of organic and inorganic compounds, especially in polyurethane synthesis, and exhibits excellent catalytic effects. In addition, DMCHA has certain stability and can maintain its catalytic activity over a wide temperature range.

2. Application of DMCHA in the polyurethane industry

2.1 Basic concepts of polyurethane

Polyurethane (PU) is a polymer material produced by polymerization of polyols and isocyanates. It has excellent mechanical properties, wear resistance, chemical resistance and elasticity, and is widely used in foam plastics, elastomers, coatings, adhesives and other fields.

2.2 DMCHA in polyurethaneThe role in synthesis

In the synthesis of polyurethane, the selection of catalyst is crucial. As a highly efficient catalyst, DMCHA can significantly accelerate the reaction between polyols and isocyanates, and improve the reaction rate and product quality. Its main functions include:

Accelerating reaction: DMCHA can effectively reduce the reaction activation energy and enable the reaction to proceed rapidly at lower temperatures.
Control reaction rate: By adjusting the amount of DMCHA, the reaction rate of polyurethane can be accurately controlled, thereby obtaining ideal product performance.
Improving product performance: The use of DMCHA can improve the mechanical properties, heat and chemical resistance of polyurethane.

2.3 Application of DMCHA in different polyurethane products

2.3.1 Polyurethane foam

Polyurethane foam is one of the widely used fields of DMCHA. DMCHA shows excellent catalytic effects in the production of soft and rigid polyurethane foams. By adjusting the amount of DMCHA, the density, pore size and mechanical properties of the foam can be controlled to meet the needs of different application scenarios.

Foam Type	DMCHA dosage	Main Performance
Soft foam	0.1-0.5%	High elasticity, low density
Rough Foam	0.2-0.8%	High strength, low thermal conductivity

2.3.2 Polyurethane elastomer

Polyurethane elastomers have excellent wear resistance and elasticity, and are widely used in automobiles, construction and sports equipment. DMCHA can effectively control the reaction rate in the synthesis of polyurethane elastomers, improve the mechanical properties and aging resistance of the product.

Elastomer Type	DMCHA dosage	Main Performance
Thermoplastic elastomer	0.1-0.3%	High elasticity, wear resistance
Casted elastomer	0.2-0.5%	Hao QiangDegree and aging resistance

2.3.3 Polyurethane coatings and adhesives

DMCHA is mainly used in polyurethane coatings and adhesives in its excellent catalytic properties and stability. By using DMCHA, the adhesion of the coating, weathering resistance and adhesive strength can be improved.

Product Type	DMCHA dosage	Main Performance
Coating	0.05-0.2%	High adhesion and weather resistance
Adhesive	0.1-0.4%	High bonding strength, aging resistance

3. DMCHA’s Green Advantages

3.1 Low Volatile Organic Compounds (VOC) Emissions

DMCHA, as a low volatile organic compound, is used to significantly reduce VOC emissions during polyurethane production. This not only helps improve the working environment, but also reduces pollution to the atmospheric environment.

3.2 High efficiency catalysis to reduce energy consumption

The efficient catalytic properties of DMCHA enable the polyurethane reaction to be carried out quickly at lower temperatures, thereby reducing energy consumption. This not only reduces production costs, but also reduces the negative impact on the environment.

3.3 Biodegradability

DMCHA has a certain biodegradability and can gradually decompose in the natural environment, reducing the long-term impact on the environment. This makes DMCHA a more environmentally friendly catalyst choice.

4. DMCHA market prospects

4.1 Overview of the global polyurethane market

The global polyurethane market has maintained steady growth in recent years and is expected to continue this trend in the next few years. With the increasing strict environmental regulations and the increasing demand for green products from consumers, the demand for environmentally friendly catalysts in the polyurethane industry will also continue to increase.

4.2 Market demand for DMCHA

As an efficient and environmentally friendly catalyst, DMCHA’s market demand is expected to continue to grow with the green transformation of the polyurethane industry. Especially in the fields of automobiles, construction and furniture, DMCHA has broad application prospects.

4.3 Competition pattern

At present, the global DMCHA market is mainly dominated by several large chemical companies. With the advancement of technology and the expansion of the market, more companies are expected to enter this field., promote continuous innovation in the production and application technology of DMCHA.

5. DMCHA production and quality control

5.1 Production process

DMCHA production is mainly achieved through the methylation reaction of cyclohexylamine and formaldehyde. Specific processes include:

Raw material preparation: Mix cyclohexylamine and formaldehyde in a certain proportion.
Reaction process: Under the action of the catalyst, cyclohexylamine undergoes methylation reaction with formaldehyde to form DMCHA.
Separation and purification: DMCHA is isolated and purified by distillation and other methods to obtain a high-purity product.

5.2 Quality Control

To ensure the product quality of DMCHA, manufacturers must strictly control the following parameters:

parameters	Control Range
Purity	?99%
Moisture	?0.1%
Color	?50 APHA
Acne	?0.1 mg KOH/g

5.3 Safety and Environmental Protection

The following safety and environmental protection matters should be paid attention to during the production and use of DMCHA:

Safe Operation: DMCHA is corrosive and irritating, and operators must wear protective equipment.
Waste treatment: Waste liquid and waste gas generated during the production process must be treated and can only be discharged after meeting environmental protection standards.

6. Future development direction of DMCHA

6.1 Technological Innovation

With the advancement of science and technology, the production and application technology of DMCHA will continue to innovate. In the future, it is expected to develop a more efficient and environmentally friendly DMCHA production process to further improve its catalytic performance and environmentally friendly characteristics.

6.2 Application Expansion

DMCHA application areas will be further expanded, not only in the polyurethane industry, but may also be used in other chemical fields, such as medicine, pesticides, etc. This will bring new growth points to DMCHA’s market demand.

6.3 Green certification

With the increase in environmental awareness, DMCHA’s green certification will become an important factor in market competition. In the future, more companies are expected to pass green certification to enhance the market competitiveness of their products.

Conclusion

DMCHA, as an efficient and environmentally friendly catalyst, is becoming an important driving force for the development of the polyurethane industry in a greener direction. Through its widespread application in polyurethane foams, elastomers, coatings and adhesives, DMCHA not only improves product performance, but also reduces negative impacts on the environment. With the advancement of technology and the increase in market demand, the application prospects of DMCHA will be broader, injecting new vitality into the sustainable development of the polyurethane industry.

Effective strategies for DMCHA (N,N-dimethylcyclohexylamine) to reduce odor during production

admin 3月 12th, 2025 News

Effective strategy for DMCHA (N,N-dimethylcyclohexylamine) to reduce odor during production

Catalog

Introduction
The basic properties of DMCHA
Source of odor during production
The application of DMCHA in reducing odor
Detailed analysis of effective strategies
Comparison of product parameters and performance
Practical application cases
Conclusion

1. Introduction

In modern chemical production, odor problems have always been an important factor that plagues enterprises and the environment. Odor not only affects the working environment, but may also pose a threat to employee health and even cause environmental pollution problems. N,N-dimethylcyclohexylamine (DMCHA) is a commonly used organic compound and is widely used in polyurethane foams, coatings, adhesives and other fields. However, DMCHA will also produce a certain odor during the production process. This article will discuss in detail the effective strategies of DMCHA to reduce odor during production, helping enterprises improve their working environment while improving their production efficiency.

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. It is a colorless to light yellow liquid with a typical amine odor.

2.2 Physical Properties

Boiling point: 165-167°C
Density: 0.85 g/cm³
Flash point: 45°C
Solution: easy to soluble in organic solvents, slightly soluble in water

2.3 Chemical Properties

DMCHA is a strongly basic compound that can react with acid to form salts. It is easy to oxidize in the air and produces corresponding oxides.

3. Source of odor during production

3.1 Impurities in raw materials

The raw materials for producing DMCHA may contain a small amount of impurities, which will produce odors during the reaction.

3.2 Reaction by-products

During the synthesis of DMCHA, some by-products may be generated, such as amines, aldehydes, etc., which have a strong odor.

3.3 Storage and Transport

DMCHA may react with oxygen in the air during storage and transportation to produce oxides with odor.

4. Application of DMCHA in reducing odor

4.1 Optimize production process

By improving productionProcess reduces the generation of by-products and thus reduces odor.

4.2 Using high-efficiency catalysts

Select the appropriate catalyst to improve the reaction efficiency and reduce the occurrence of side reactions.

4.3 Add deodorant

Add deodorants are added during the production process to neutralize or adsorb odor substances.

4.4 Improve storage and transportation conditions

DMCHA is stored and transported in airtight containers to reduce contact with air and prevent oxidation reactions.

5. Detailed analysis of effective strategies

5.1 Optimize production process

5.1.1 Reaction temperature control

Reduce side reactions by precisely controlling the reaction temperature. For example, controlling the reaction temperature at 150-160°C can effectively reduce the generation of by-products.

5.1.2 Reaction time control

Appropriately extend the reaction time to ensure that the raw materials are fully reacted and reduce the residue of unreacted raw materials.

5.1.3 Raw material pretreatment

Pretreat the raw materials to remove impurities and reduce the source of odor.

5.2 Using high-efficiency catalysts

5.2.1 Catalyst selection

Select efficient and selective catalysts, such as precious metal catalysts such as platinum and palladium, to improve the reaction efficiency.

5.2.2 Catalyst dosage

Reasonably control the amount of catalyst to avoid excessive use and increase side reactions.

5.3 Add deodorant

5.3.1 Types of deodorants

Commonly used deodorants include activated carbon, silicone, molecular sieve, etc., which can effectively adsorb odor substances.

5.3.2 Methods for adding deodorant

Disper the deodorant evenly in the reaction system or add it during product storage.

5.4 Improve storage and transportation conditions

5.4.1 Sealed container

Storage and transport DMCHA using airtight containers to reduce air contact.

5.4.2 Inert gas protection

In storage and transportation, use inert gases (such as nitrogen) to prevent oxidation reactions.

6. Comparison of product parameters and performance

6.1 DMCHA product parameters

parameter name	value
Molecular Weight	127.23 g/mol
Boiling point	165-167°C
Density	0.85 g/cm³
Flashpoint	45°C
Solution	Easy soluble in organic solvents

6.2 Comparison of performance of different deodorants

Types of deodorants	Adsorption efficiency	Cost	Applicable scenarios
Activated Carbon	High	Low	Widely applicable
Silicone	in	in	Specific Scenario
Molecular sieve	High	High	High-end applications

7. Practical application cases

7.1 Case 1: A polyurethane foam manufacturer

The company uses DMCHA as a catalyst during production, but due to the many side reactions, it leads to serious odor problems. By optimizing the production process, controlling the reaction temperature and reaction time, and adding activated carbon deodorant, the odor was successfully reduced by 80%.

7.2 Case 2: A paint manufacturer

The company caused odor problems due to contact with air during storing and transporting DMCHA. By using airtight containers and inert gas protection, the generation of odor is effectively reduced.

8. Conclusion

The odor problems generated by DMCHA during the production process can be effectively solved by strategies such as optimizing the production process, using efficient catalysts, adding deodorants and improving storage and transportation conditions. In actual applications, enterprises should choose appropriate strategies based on specific circumstances to improve production efficiency, improve working environment, and reduce environmental pollution. Through the detailed analysis and actual cases in this article, I believe that readers have a deeper understanding of the effective strategies of DMCHA in reducing odor in the production process.

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