What kind of material does the shockproof rubber cushion usually choose? What's the hardness?
Of course is to choose butadiene rubberThe biggest characteristic is the molecular structure, mainly for the CIS structure, so the elasticity, cracking resistance and dynamic performance is excellent, and the rubber pad shock proof function is guaranteed, and the rubber cushion life is guaranteed, and the hardness is about 55.
The air tightness of butyl rubber is the best of all the rubber, is its biggest advantage, it is mainly used for tyres, although there are shock absorbing function, but dynamic flex is not ideal.
Recommend the use of EPDM, its good elasticity, although lower than natural rubber, isoprene rubber and butadiene rubber but its resistance to aging, corrosion resistance, chemical resistance, resistance to high pressure steam performance advantage, so compared to choose EPDM.Shock absorbing rubber used to be the only adhesive for NR in the past. In recent years, in order to meet the requirements of increasing heat resistance and oil resistance of automobiles, IIR, EPDM, NBR and CR have also begun to be used, and even microcellular PU elastomers and TPE thermoplastic elastomers have appeared. In addition, according to automotive requirements, in order to achieve lightweight targets, plastics have begun to replace metal, so-called rubber and plastic shock absorption rubber products.The shore hardness of ethylene propylene rubber vulcanizate is about 25-95A
