Rubber compound with aramid-fiber-reinforced elastomeric composite having increased blow-out resistance

摘要

A vulcanizable rubber composition for use in vehicle endless-track pads and high-load pneumatic tires is disclosed, wherein the composition provides an increased resistance to blow-out when the vulcanizate product is exposed to high-repeated deflection. The composition comprises a rubber component compounded with an aramid fiber-elastomer composite. In one embodiment, the elastomer composite is present in an amount to provide an aramid fiber content of 1-6 parts per hundred parts of the rubber component (phr). In another exemplary embodiment, the rubber component consists essentially of natural rubber and the elastomer in the elastomer composite is natural rubber. The present invention also provides a method of preparing a solid elastomeric composite to be used in a rubber composition.