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Rubber (rubber) is the plant extract, XiangJiaoCao of rubber latex, after processing made of flexible, insulation, waterproof, and air material. It is high elastic polymer compound

Rubber has the following properties:
(1) the prominent high elastic, performance for a very high elongation. Pure natural gum can stretch to the original long 800% and constantly. The smaller the elastic modulus, 100% in extended which stress for hundreds of Newton each only square centimeters; In tensile at a smaller after permanent deformation, namely, in force can't recover after repeatedly accumulation is also extremely low.
(2) good abrasion resistance, high of the friction coefficient and naisuanjian corrosion resistance, some varieties such as butyl rubber, fluorine rubber etc also bear the oil. In addition, the rubber also has electric insulation, vibration and air away and other characteristics. Defect is bad, the thermal conductivity of heat-resistant and not easily machinery processing etc.