Chloroprene rubber is produced by emulsion polymerization, and the production process is mostly batch polymerization in a single kettle. Chloroprene rubber is different from general synthetic rubber. It does not use sulfur vulcanization, but uses zinc oxide, magnesium oxide and other vulcanization. Neoprene has many varieties and grades, and is the most widely used rubber type in synthetic rubber.
Neoprene has good physical and mechanical properties, oil resistance, heat resistance, flame resistance, sunlight resistance, ozone resistance, acid and alkali resistance, and chemical resistance. The disadvantage is poor cold resistance and storage stability. Has high tensile strength, elongation and reversible crystallinity, and good adhesion. Resistant to aging and heat. Excellent oil and chemical resistance. Weather resistance and ozone aging are second only to ethylene-propylene rubber and butyl rubber. The heat resistance is equivalent to that of nitrile rubber, and it has certain flame retardancy. Oil resistance is second only to nitrile rubber. Good resistance to inorganic acid and alkali. The cold resistance is slightly worse, and the electrical insulation is not good. The raw rubber has poor storage stability and will produce a “self-sulfur” phenomenon. The Mooney viscosity increases and the raw rubber becomes hard.
Neoprene can be used to make tire sidewalls, heat-resistant conveyor belts, oil- and chemical-resistant hoses, container linings, gaskets, rubber rollers, rubber sheets, automotive and tractor accessories, wires, cable sheathing rubber, door and window sealing tape, Rubber dams, road caulking materials, building sealing strips, building waterproof sheets, certain flame-retardant rubber products and adhesives.
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