| 摘要 |
PURPOSE: A tire tread rubber composition is provided to improve breaking power on wet road, rotation resistant properties, and abrasion resistance. CONSTITUTION: A tire tread rubber composition comprises 30-90 parts by weight of silica, 1-20 parts by weight of the silane coupling agent in chemical formula 1, based on 100.0 parts by weight of raw rubber. In chemical formula 1, R^1, R^2 and R^3 are respectively linear or branched C1-4 alkyl groups. R^4 is a linear or branched C1-C20 alkylene group, R^5 is a linear or branched C2-6 alkylene group. In the silica, silanetriol with a 5-50 % of silica weight amount is treated on the surface of the silica, of which the BET surface area is 110-250 m^2/g.
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