Performance characteristics of chlorosulfonated polyethylene adhesive (synthetic rubber)

Chlorosulfonated polyethylene (CSM) is an elastomer that was first industrialized by Dupont Company in the United States in 1952. It is prepared from low-density polyethylene or high-density polyethylene through chlorination and chlorosulfonation reactions. The following are the basic properties and uses of chlorosulfonated polyethylene:

Physical properties:

Chlorosulfonated polyethylene is a white or yellow elastomer with a relative density between 1.07 and 1.28. It is insoluble in fats and alcohols, but can only swell and not dissolve in ketones and ethers.

Chemical properties:

Chlorosulfonated polyethylene has excellent ozone resistance, atmospheric aging resistance, chemical corrosion resistance, and excellent performance in high temperature, oil resistance, flame resistance, and wear resistance. The chlorine and sulfone atoms contained in its molecular chain can provide reactivity in chemical reactions, making it excellent in catalytic performance and reactivity in many chemical reactions.

Purpose:

Chlorosulfonated polyethylene is widely used in various fields due to its excellent properties. In the automotive industry, it can be used to produce various seals, shock absorbers, pipeline joints, etc. In the construction industry, it can be used to produce waterproof materials, sealants, and adhesives. In addition, it can also be used to produce insulation layers for wires and cables, anti-corrosion coatings, adhesives, etc.

Global production capacity:

There are few manufacturers producing chlorosulfonated polyethylene globally, with only a few countries such as the United States, Japan, Russia, and China having installations. The global total annual production capacity is about 75000 tons, which is close to the production capacity.

Advantages: Excellent heat resistance, weather resistance, and ozone resistance, as well as good cold and acid resistance. Commonly used in areas with oxidative resistance drugs, it has good resistance to ozone, oxidation, and flame. The physical properties are similar to those of chloroprene rubber, and it has excellent acid resistance and excellent abrasion resistance. It has the same low friction surface, oil resistance, flame resistance, and electrical resistance as nitrile rubber. The resistance of insulation to oil and solvents is between nitrile rubber and chloroprene rubber. It is recommended to use water to prevent leakage.

Disadvantages: Exposure to concentrated oxidizing acids, nitrohydrogen, lipids, ketones, and aromatic hydrogen is not recommended.

General operating temperature: -45~120 ℃.

Recommendation for chlorosulfonated polyethylene adhesive mixing equipment: