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

Date：2025-03-09 Categories：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.

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