| abstract |
The invention discloses a kind of sponge material with low tensile strength and preparation method thereof, the sponge material is made of the component of following parts by weight：90 parts of ethylene vinyl acetate, 13 15 parts of APAO PT, 20 30 parts of synthetic rubber, 35 parts of rubber softening oil, 69 parts of calcium carbonate powder, 47 parts of adhesive resin, 36 parts of diatom ooze, 8 13 parts of foaming agent, 0.2 0.6 parts of cumyl peroxide, 0.5 1 parts of emulsifying agent, 12 parts of dispersant, 0.2 0.6 parts of vulcanizing agent.A kind of sponge material with low tensile strength provided by the invention and preparation method thereof, by varying the formula and preparation process of existing sponge material, obtain it is a kind of have low tensile strength, the sponge material of high elongation rate, its tensile strength is only 0.21 0.27 kg/cm 2 , elongation reaches 57 69%, meets particular/special requirement of the retainer ring to spongy layer, overcomes that traditional sponge tensile strength of material is higher, elongation is relatively low, tensile property is poor, inadaptable the problem of being used as retainer ring spongy layer. |