Chloroprene Rubber (CR) from China: Reliable Suppliers & Factory for High-Quality Synthetic Rubber
Product Introduction
Chloroprene Rubber is a synthetic rubber produced by α-polymerization of chloroprene (i.e. 2-chloro-1,3-butadiene) as the main raw material. It is widely used in anti-weathering products, viscose soles, and coatings. and rocket fuel.
Appearing as milky white, beige or light brown flakes or blocks, Neoprene is an elastomer & important variety of synthetic rubber. It has good physical and mechanical properties, oil resistance, heat resistance, flame resistance, sunlight resistance, ozone resistance, acid and alkali resistance, and chemical reagent resistance. The disadvantage is poor cold resistance and storage stability.
Neoprene has high tensile strength, elongation, reversible crystallinity and good adhesion. Resistant to aging and heat. Excellent oil and chemical resistance. Weather resistance and ozone aging resistance are second only to ethylene propylene rubber and butyl rubber. The heat resistance is equivalent to that of nitrile rubber, with a decomposition temperature of 230 to 260°C, short-term resistance to 120 to 150°C, and long-term use at 80 to 100°C. It has certain flame retardancy. Oil resistance is second only to nitrile rubber. Good resistance to inorganic acid and alkali corrosion.
The solubility parameter of chloroprene rubber accounts for δ=9.2~9.41. Soluble in toluene, xylene, dichloroethane, trivanadium, slightly soluble in acetone, methyl ethyl ketone, ethyl acetate, cyclohexane, insoluble in n-hexane, solvent gasoline, but soluble in appropriate proportions of good solvents and A mixed solvent composed of a poor solvent and a non-solvent or a poor solvent and a non-solvent, which swells in vegetable oil and mineral oil without dissolving.
Technical Specifications
| Item | CR240 | CR241 | CR242 | CR243 | CR244 | CR244A | CR244B | CR231 | CR232 | CR233 | CR281 | CR282 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Viscosity mpa.s (25℃, 5% Xylene solution) | 13-24 | 25-34 | 35-53 | 54-75 | 76-115 | 116-140 | ≥ 140 | *** | *** | |||
| Viscosity mpa.s (25℃, 10% Xylene solution) | *** | 500-1500 | 1500-2500 | 2500-5000 | *** | |||||||
| Viscosity mpa.s (25℃, 15% Xylene solution) | *** | *** | 1000-3000 | 3000-6000 | ||||||||
| Application | Adhesive, Adhesive with higher tack; Adjust the viscosity, improve the initial adhesion | Goods with highly loading, adhesive, conveyor belts, hoses, rubber seals, some other hard rubber product. | *** | |||||||||
| Substitute | Japan Denka A series; Dupont Neoprene series; Lanxess Baypren; Tosoh Skyprene | |||||||||||
Product Application
- Hoses for high pressure and ultra-high pressure, medium pressure and low pressure
- Oil and fuel hoses
- Brake hoses
- Hoses for use in the petroleum industry
- Rubber-sheathed flexible cables
- Trailing cables
- Welding cables
- Flat flexible power and control cables
- Flat flexible lighting cables, cable sheathing
- Power transmission belts for the automotive and general industry
- Conveyer belts with steel cord and textile reinforcement for industries
- Bellows and dust caps, Elbows, Rubber Seals
- Spring elements, Dampers and bearings
- Windshield wiper blades
- Sealing strips
- Raw material for adhesive production, bonding metal, wood, rubber, leather, fiber, and cement.
- Graft-copolymerized with reactive monomers (MMA, acrylic acid) to improve adhesion to PVC, PU, and EVA.
