What Is Neoprene Sponge

The appearance is milky white, beige or light brown flakes or blocks. It is an elastomer produced by α-polymerization of chloroprene (ie 2-chloro-1,3-butadiene) as the main raw material. The solubility parameter of chloroprene rubber accounts for δ=9.2～9.41. Soluble in toluene, xylene, dichloroethane, trivanadium ethylene, slightly soluble in acetone, methyl ethyl ketone, ethyl acetate, cyclohexane, insoluble in n-hexane, solvent gasoline, but soluble in a good solvent and a proper ratio Poor solvents and non-solvents or mixed solvents composed of poor solvents and non-solvents swell but do not dissolve in vegetable oil and mineral oil.

It 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. It 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, the decomposition temperature is 230～260℃, the short-term resistance is 120～150℃, and it can be used for a long time at 80～100℃, and it has certain flame retardancy. Oil resistance is second only to nitrile rubber. Good resistance to inorganic acid and alkali corrosion.