Method for preparing all-rubber powder elastic body from waste rubber



The invention discloses a method for preparing an all-rubber powder elastic body from waste rubber, which comprises the following steps of: soaking 100 parts of waste rubber with 40 to 120 meshes in rubber powder treating agents of trimethylolpropane trimethacrylate and acetone for 1 to 3 hours so as to prepare modified rubber powder; performing thin-passing on the modified rubber powder on a two-roller open mill for three times; adding dicumyl peroxide, zinc oxide and stearic acid, mixing at the roller temperature of between 50 and 80 DEG C for 3 to 5 minutes, and discharging; and performing mold pressing for 10 to 15 minutes under the conditions of the temperature of between 100 and 130 DEG C and the pressure of 5 to 8MPa. By pretreating the rubber powder and modifying the rubber powder with a vulcanizing modifier, the prepared all-rubber powder elastic body has the advantages of uniform inner distribution, a structure of a fracture surface similar to that of raw and natural rubber, tensile strength improved by 3 to 5 times compared with that of the conventional rubber powder treated by phenylhydrazine and ZnCl2, excellent performance, direct and wide use as a rubber sheet, lower price than raw and natural rubber, and obvious economic benefit.




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Patent Citations (1)

    Publication numberPublication dateAssigneeTitle
    CN-1313356-ASeptember 19, 2001南开大学Modified nitrile rubber and its preparing process

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