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Technological discussion on the application of N,N-dimethylcyclohexylamine in waterproofing materials

admin 3月 9th, 2025 News

Discussion on the application technology of N,N-dimethylcyclohexylamine in waterproofing materials

1. Introduction

Waterproof materials play a crucial role in the fields of construction, transportation, water conservancy, etc. With the advancement of science and technology, the research and development and application of new waterproof materials are constantly advancing. As an important organic compound, N,N-dimethylcyclohexylamine (DMCHA) has gradually attracted attention in recent years. This article will discuss in detail from the basic properties of N,N-dimethylcyclohexylamine, application mechanism in waterproof materials, product parameters, application cases, etc.

2. Basic properties of N,N-dimethylcyclohexylamine

2.1 Chemical structure

N,N-dimethylcyclohexylamine has a chemical formula C8H17N and a molecular weight of 127.23 g/mol. Its structure is:

 CH3
       |
  N-CH3
   /
C6H10

2.2 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

2.3 Chemical Properties

N,N-dimethylcyclohexylamine has strong alkalinity and can react with acid to form salts. In addition, it has good stability and reactivity and is suitable for use as a catalyst or additive.

3. Application mechanism of N,N-dimethylcyclohexylamine in waterproofing materials

3.1 As a catalyst

N,N-dimethylcyclohexylamine is often used as a catalyst in polyurethane waterproof coatings. It can accelerate the reaction of isocyanate with polyols, promote the formation of polyurethane, thereby improving the curing speed and waterproofing properties of the coating.

3.2 As an additive

In waterproof coatings, N,N-dimethylcyclohexylamine can also be used as an additive to improve the leveling, adhesion and weathering of the coating. The cyclohexyl and dimethylamino groups in their molecular structure can enhance the coatingFlexibility and anti-aging properties.

3.3 As a crosslinker

In some waterproof materials, N,N-dimethylcyclohexylamine can be used as a crosslinking agent to form a three-dimensional network structure by reacting its amino group with other functional groups in the material, thereby improving the mechanical strength and waterproofing properties of the material.

4. Product parameters

4.1 Technical indicators of N,N-dimethylcyclohexylamine

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

4.2 Technical indicators of waterproof materials

parameters	value
Solid content	?50%
Viscosity	500-2000 mPa·s
Tension Strength	?2.0 MPa
Elongation of Break	?300%
Water resistance	?96 h
Weather resistance	?1000 h

5. Application Cases

5.1 Building waterproofing

In the field of building waterproofing, N,N-dimethylcyclohexylamine is widely used in waterproof coatings in roofs, basements, bathrooms and other parts. Its excellent catalytic properties and additive effects make the waterproof coatings have rapid curing, high adhesion, good weather resistance and anti-aging properties.

5.2 Transportation Engineering

In traffic engineering, N,N-dimethylcyclohexylamine is often used in the preparation of waterproof materials such as bridges, tunnels, and highways. Its use as a crosslinking agent can significantly improve the mechanical strength and durability of waterproof materials, ensuring the safety and long-term use of traffic facilities.use.

5.3 Water Conservancy Engineering

In water conservancy projects, N,N-dimethylcyclohexylamine is used in the preparation of waterproof materials such as reservoirs, dams, channels, etc. Its excellent water resistance and anti-aging properties can effectively prevent water penetration and material aging, and ensure the safe and stable operation of water conservancy facilities.

6. Production process

6.1 Raw material preparation

The main raw materials for producing N,N-dimethylcyclohexylamine include cyclohexylamine, formaldehyde and hydrogen. The purity and quality of the raw materials directly affect the performance of the final product.

6.2 Reaction process

The production of N,N-dimethylcyclohexylamine is mainly achieved through the reduction amination reaction of cyclohexylamine and formaldehyde. The reaction process is as follows:

C6H11NH2 + 2CH2O + 2H2 ? C6H11N(CH3)2 + 2H2O

6.3 Refining and purification

The product after the reaction is subjected to distillation and filtration, and the impurities and unreacted raw materials are removed to obtain high-purity N,N-dimethylcyclohexylamine.

7. Safety and Environmental Protection

7.1 Safety precautions

N,N-dimethylcyclohexylamine has certain toxicity and irritation. Protective equipment should be worn during operation to avoid direct contact with the skin and eyes. Keep away from fire sources and oxidants during storage and keep them well ventilated.

7.2 Environmental protection measures

The waste gas and wastewater generated during the production process should be treated and discharged after meeting environmental protection standards. Waste liquid should be collected in a centralized manner and handed over to professional institutions for treatment to avoid pollution to the environment.

8. Market prospects

With the rapid development of construction, transportation, water conservancy and other fields, the demand for waterproof materials continues to increase. N,N-dimethylcyclohexylamine, as an efficient and environmentally friendly waterproof material additive, has broad market prospects. In the future, with the advancement of technology and the deepening of application, N,N-dimethylcyclohexylamine will be more widely and mature in waterproof materials.

9. Conclusion

The application of N,N-dimethylcyclohexylamine in waterproofing materials has significant advantages and can improve the performance and durability of waterproofing materials. Through discussions on its basic properties, application mechanism, product parameters, application cases, etc., we can see the importance and potential of N,N-dimethylcyclohexylamine in the field of waterproof materials. In the future, with the continuous advancement of technology and market demand, the application of N,N-dimethylcyclohexylamine in waterproofing materials will be more extensive and in-depth.

The above content is a discussion of the application technology of N,N-dimethylcyclohexylamine in waterproofing materials, covering its basic properties, application mechanism, product parameters, application cases, production process, safety and environmental protection, and market prospects.. I hope that through the introduction of this article, we can provide reference and reference for research and application in related fields.

Contribution of N,N-dimethylcyclohexylamine to environmentally friendly adhesives

admin 3月 9th, 2025 News

The contribution of N,N-dimethylcyclohexylamine to environmentally friendly adhesives

Introduction

With the increasing global environmental awareness, the research and development and application of environmentally friendly adhesives are receiving more and more attention. N,N-dimethylcyclohexylamine (DMCHA) plays an important role in environmentally friendly adhesives as an important chemical intermediate. This article will introduce in detail the characteristics of N,N-dimethylcyclohexylamine, its application in adhesives, product parameters and its contribution to environmental protection.

1. Basic characteristics of N,N-dimethylcyclohexylamine

1.1 Chemical structure

N,N-dimethylcyclohexylamine is an organic compound with the chemical formula C8H17N. Its molecular structure consists of a cyclohexane ring and a dimethylamino group.

1.2 Physical Properties

Properties	value
Molecular Weight	127.23 g/mol
Boiling point	159-160°C
Density	0.85 g/cm³
Flashpoint	38°C
Solution	Easy soluble in organic solvents

1.3 Chemical Properties

N,N-dimethylcyclohexylamine is alkaline and can react with acid to form a salt. The hydrogen atoms on its amino group can be replaced by other groups to form a variety of derivatives.

2. Application of N,N-dimethylcyclohexylamine in adhesives

2.1 As a curing agent

N,N-dimethylcyclohexylamine is commonly used as a curing agent in adhesives, which can accelerate the curing process of epoxy resins and improve the strength and durability of the adhesive.

2.2 as a catalyst

In polyurethane adhesives, N,N-dimethylcyclohexylamine can be used as a catalyst to promote the reaction between isocyanate and polyol and improve the adhesive properties.

2.3 As plasticizer

N,N-dimethylcyclohexylamine can also be used as a plasticizer to improve the flexibility and processing properties of the adhesive.

3. Product parameters

3.1 Purity

Level	Purity
Industrial grade	?98%
High purity	?99.5%

3.2 Packaging

Packaging Specifications	Packaging Materials
25kg/barrel	Polyethylene barrel
200kg/barrel	Steel barrel

3.3 Storage conditions

conditions	Requirements
Temperature	0-30°C
Humidity	?60%
Do not to light	Yes

4. Contribution of N,N-dimethylcyclohexylamine to environmental protection

4.1 Low Volatile Organic Compounds (VOCs)

The application of N,N-dimethylcyclohexylamine in adhesives helps to reduce VOC emissions and reduce environmental pollution.

4.2 Non-toxic and harmless

N,N-dimethylcyclohexylamine is non-toxic and harmless to the human body and the environment under normal use conditions, and meets environmental protection requirements.

4.3 Biodegradable

N,N-dimethylcyclohexylamine is biodegradable in the natural environment and will not cause long-term environmental pollution.

5. Practical application cases

5.1 Construction Industry

In the construction industry, N,N-dimethylcyclohexylamine is used to produce environmentally friendly epoxy resin adhesives for bonding materials such as concrete, metal and glass.

5.2 Automotive Industry

In automobile manufacturing, N,N-dimethylcyclohexylamine is used to produce polyurethane adhesives for bonding body parts and improving the durability and safety of the vehicle.

5.3 Electronics Industry

In the electronics industry, N,N-dimethylcyclohexylamine is used to produce high-performance adhesives for bonding electronic components and improving product reliability and stability.

6. Future development trends

6.1 Green Chemistry

With the development of green chemistry, the synthesis process of N,N-dimethylcyclohexylamine will be more environmentally friendly and reduce the negative impact on the environment.

6.2 High performance

In the future, N,N-dimethylcyclohexylamine will develop towards high-performance to meet the needs of more high-end applications.

6.3 Multifunctional

N,N-dimethylcyclohexylamine will develop more functions, such as antibacterial and anti-mold, and expand its application range in adhesives.

Conclusion

N,N-dimethylcyclohexylamine, as an important chemical intermediate, plays an important role in environmentally friendly adhesives. Its low volatile, non-toxic and harmless and biodegradable properties make it an ideal choice for environmentally friendly adhesives. With the advancement of technology and the improvement of environmental protection requirements, the application prospects of N,N-dimethylcyclohexylamine in adhesives will be broader.

The above content introduces in detail the application of N,N-dimethylcyclohexylamine in environmentally friendly adhesives and its contribution to environmental protection. Through tables and actual cases, the content is more intuitive and easy to understand. I hope this article can provide readers with valuable information.

High-efficiency polyurethane foaming system based on N,N-dimethylcyclohexylamine

admin 3月 9th, 2025 News

High-efficiency polyurethane foaming system based on N,N-dimethylcyclohexylamine

Catalog

Introduction
Overview of polyurethane foaming system
Properties of N,N-dimethylcyclohexylamine
Polyurethane foaming system based on N,N-dimethylcyclohexylamine
Product parameters and performance
Application Fields
Conclusion

1. Introduction

Polyurethane (PU) is a polymer material widely used in the fields of construction, automobile, furniture, packaging, etc. Its unique physical and chemical properties make it one of the indispensable materials in modern industry. Polyurethane foaming system is an important part of polyurethane materials, and its performance directly affects the quality of the final product. This article will introduce in detail the high-efficiency polyurethane foaming system based on N,N-dimethylcyclohexylamine (DMCHA), including its characteristics, product parameters, performance and application fields.

2. Overview of polyurethane foaming system

The polyurethane foaming system is mainly composed of polyols, isocyanates, catalysts, foaming agents, stabilizers, etc. Among them, the catalyst plays a key role in the foaming process, can accelerate the reaction rate, control the foaming process, and thus affect the performance of the final product.

2.1 Polyol

Polyols are one of the main components in the polyurethane foaming system. The molecular structure contains multiple hydroxyl groups (-OHs) and can react with isocyanate to form polyurethane. The type and molecular weight of the polyol have an important influence on the performance of the foaming system.

2.2 Isocyanate

Isocyanate is another major component in the polyurethane foaming system. Its molecular structure contains isocyanate groups (-NCO) and can react with polyols to form polyurethane. Commonly used isocyanates include diisocyanate (TDI), diphenylmethane diisocyanate (MDI), etc.

2.3 Catalyst

Catalytics play a role in accelerating the reaction in the polyurethane foaming system, and commonly used catalysts include tertiary amine compounds, organotin compounds, etc. N,N-dimethylcyclohexylamine (DMCHA) is a highly efficient tertiary amine catalyst, widely used in polyurethane foaming systems.

2.4 Foaming agent

Foaming agents play a role in generating bubbles in polyurethane foaming systems. Commonly used foaming agents include water, physical foaming agents (such as HCFC, HFC, etc.).

2.5 Stabilizer

Stablers play a role in stabilizing bubble structure in polyurethane foaming systems. Commonly used stabilizers include silicone oil, surfactants, etc.

3. Characteristics of N,N-dimethylcyclohexylamine

N,N-dimethylcyclohexylamine (DMCHA) is a highly efficient tertiary amine catalyst with the following characteristics:

3.1 High-efficiency Catalysis

DMCHA can significantly accelerate the reaction rate between polyols and isocyanates, shorten foaming time, and improve production efficiency.

3.2 Good solubility

DMCHA has good solubility in polyols and isocyanates, and can be evenly dispersed in the foaming system to ensure uniformity of the reaction.

3.3 Low odor

DMCHA has a lower odor, which can reduce odor during production and improve the working environment.

3.4 Environmental protection

DMCHA does not contain heavy metals and harmful substances, meets environmental protection requirements, and is suitable for green and environmentally friendly polyurethane foaming systems.

4. Polyurethane foaming system based on N,N-dimethylcyclohexylamine

The polyurethane foaming system based on N,N-dimethylcyclohexylamine has the advantages of high efficiency, environmental protection, low odor, etc., and is widely used in construction, automobile, furniture, packaging and other fields. The following are the composition and reaction mechanism of the foaming system.

4.1 Composition

Ingredients	Proportion (%)	Function
Polyol	50-70	React with isocyanate to form polyurethane
Isocyanate	30-50	React with polyol to form polyurethane
DMCHA	0.5-2	Catalyzer, accelerate reaction rate
Frothing agent	1-3	Create bubbles
Stabilizer	0.5-1.5	Stable bubble structure

4.2 Reaction mechanism

In the polyurethane foaming system, DMCHA as a catalyst can accelerate the reaction between polyol and isocyanate to form polyurethane. The reaction process is as follows:

Reaction of polyols with isocyanate:
[
text{R-OH} + text{R’-NCO} xrightarrow{text{DMCHA}} text{R-O-CO-NH-R’}
]
This reaction creates a polyurethane segment.
Frost agent decomposition:
The foaming agent (such as water) reacts with isocyanate to form carbon dioxide gas, producing bubbles:
[
text{H}_2text{O} + text{R’-NCO} xrightarrow{text{DMCHA}} text{R’-NH}_2 + text{CO}_2
]
Bubbles are stable:
Stabilizers (such as silicone oil) can stabilize the bubble structure, prevent bubbles from bursting or merging, and ensure uniformity of the foam.

5. Product parameters and performance

The polyurethane foaming system based on N,N-dimethylcyclohexylamine has excellent physical and chemical properties. The following are its main product parameters and properties.

5.1 Product parameters

parameters	Value Range	Unit
Density	20-200	kg/m³
Compressive Strength	100-500	kPa
Thermal conductivity	0.02-0.04	W/(m·K)
Closed porosity	85-95	%
Dimensional stability	±1	%
Temperature range	-40 to +120	?

5.2 Performance Features

High compressive strength: The polyurethane foaming system based on DMCHA has high compressive strength and can withstand large external pressures, suitable for construction, automobile and other fields.
Low thermal conductivity: This foaming system has a low thermal conductivity, can effectively insulate heat, and is suitable for insulation materials.
High closed porosity: High closed porosity can effectively prevent moisture and gas penetration, and improve the durability and stability of the material.
Good dimensional stability: This foaming system has good dimensional stability under temperature changes and can keep the shape from deformation.
Wide use temperature range: This foaming system has good performance in the temperature range of -40? to +120? and is suitable for various environmental conditions.

6. Application areas

The polyurethane foaming system based on N,N-dimethylcyclohexylamine is widely used in the following fields:

6.1 Construction Field

Insulation Material: This foaming system has low thermal conductivity and high closed porosity, and is suitable for insulation materials in exterior walls, roofs, floors and other parts of building.
Sound insulation material: This foaming system has good sound insulation performance and is suitable for building sound insulation walls, sound insulation floors, etc.

6.2 Automotive field

Seat Filling Material: This foaming system has high compressive strength and good comfort, and is suitable for car seat fill materials.
Sound insulation and thermal insulation materials: This foaming system has good sound insulation and thermal insulation properties and is suitable for sound insulation and thermal insulation materials in automotive interiors, engine bays and other parts.

6.3 Furniture Field

Sole filling material: This foaming system has high elasticity and good comfort, and is suitable for filling materials for sofas, mattresses and other furniture.
Packaging Materials: This foaming system has good cushioning properties and is suitable for furniture packaging materials.

6.4 Packaging Field

Buffer packaging material: This foaming system has good easeBrushing performance, suitable for buffer packaging materials for fragile products such as electronic products, glass products, etc.
Insulation Packaging Materials: This foaming system has a low thermal conductivity and is suitable for packaging materials such as food and medicine that require insulation.

7. Conclusion

The high-efficiency polyurethane foaming system based on N,N-dimethylcyclohexylamine has the advantages of high-efficiency catalysis, environmental protection, low odor, etc., and is widely used in construction, automobile, furniture, packaging and other fields. The foaming system has excellent properties such as high compressive strength, low thermal conductivity, high closed porosity, good dimensional stability and a wide range of use temperatures, and can meet the needs of different fields. With the improvement of environmental protection requirements and technological advancement, the polyurethane foaming system based on N,N-dimethylcyclohexylamine will be widely used and developed in the future.

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