The purpose of precipitation silica for the tire tread of off-road tires is to reduce its heat generation, improve its heat resistance and its ability to resist falling off. It has been reported that the large-scale tire tread rubber is improved by the appearance quality and the abrasion resistance under poor road conditions after the precipitation of white carbon black. The precipitation of white carbon black and a difunctional silane such as TESPT tetrasulfide can improve the wear performance of the tread of an engineered tire. By adjusting the amount of vulcanizing agent, the physical and mechanical properties of the tread surface of the off-road tire containing precipitated silica can be successfully optimized.

The results show that the silane activation effect of the precipitated silica is advantageous for improving the modulus and wear performance of the off-road tire tread whose base is natural rubber. Laboratory research shows that the natural rubber is partially replaced by styrene-butadiene rubber, the carbon black is partially replaced by precipitation, and the semi-effective vulcanization system is used. The performance of the natural rubber tread of the off-road tire is improved; the tread rubber is used 10 The precipitation white carbon black has a marked improvement in tear strength and chipping resistance. Compared with the pure carbon black filled tread, the off-road tire tread containing precipitated silica is much more resistant to cut growth and tear strength than the latter. The natural rubber engineering machinery tire tread, which uses all of the highly dispersible precipitation method, can obtain low heat build-up, good tear resistance, and block fatigue tear resistance.