| 摘要 |
PURPOSE: Provided is a tire rubber composition, which minimizes the lowering of rotation resistance and abrasion resistance but maximizes brake performance in a wet road. CONSTITUTION: The tire rubber composition comprises 100pts.wt. of a base rubber comprising 70-100wt% of styrene-butadiene rubber produced by emulsion polymerization and 0-30wt% of butadiene rubber produced by a solution polymerization and 20-40pts.wt. of silica and 40-70pts.wt. of a carbon black as reinforcing agents, wherein the styrene-butadiene rubber has a glass transition temperature of -40 to -20deg.C, a styrene content in a fine structure composition of 38-43wt%, an aromatic oil content of 48-52wt%, a stress relaxation time gradient(logT/log time) of 0.30-0.34, and a Mooney viscosity of 55-65. |
