MODIFIED RUBBER MASTERBATCH RUBBER COMPOSITION PREPARED THEREWITH AND VULCANIZED RUBBER AND PREPARATION METHOD THEREOF

摘要

A modified rubber masterbatch and preparation method thereof rubber composition prepared therewith and vulcanized rubber and preparation method thereof the modified rubber components comprising uncross linked rubber and cross linked rubber particles dispersed therein; the cross linked rubber particles are synthetic rubber particles and/or natural rubber particles with an average particle diameter of 20 500nm and gel content of 60% by weight or above; the uncross linked rubber is styrene butadiene rubber; and the weight ratio between the cross linked rubber particles and the uncross linked rubber is greater than 20:80 and less than or equal to 80:20. The rubber composition comprises a blend of modified rubber components and base rubber with the base rubber 100 parts by weight and the modified rubber components 1 70 parts by weight. The vulcanized rubber of the rubber composition has low rolling resistance excellent wet skid resistance and excellent wear resistance and can be used to prepare high performance tread rubber for automobiles.