| abstract |
The present invention discloses a kind of NEW TYPE OF COMPOSITE sound-absorbing shock insulation backing plate, including upper layer and lower layer structure, and the upper layer is surface layer, and the lower layer is bottom；The surface layer is made of by weight the following raw material: 100 parts of desulfurization powder, 1.5-2.5 parts of promotor, 2-3 parts of sulphur, 2-3 parts of anti-aging agent, 5-10 parts of tackifier, appropriate filler；The bottom is made of by weight the following raw material: 80 parts of ethylene propylene diene rubber, ethylene -20 parts of zinc alkene copolymer, 25 parts of foaming agent, 75 parts of carbon black, 30 parts of calcium carbonate, 80 parts of paraffin oil, 1.5 parts of sulphur, 2-4 parts of cumyl peroxide, promotor 2.5,2-4 parts of zinc oxide, 1.5 parts of stearic acid, 2 parts of calcium oxide.The configuration of the present invention is simple its, sound-absorbing isolating affection is good, improves the comfort of cabin interior working environment. |