| 摘要 |
A rubber composition for tire tread according to an embodiment of the present invention comprises 100 parts by weight of a raw rubber, 70-90 parts by weight of silica, and 20-35 parts by weight of a softener. And the raw rubber is manufactured by a continuous method, and the contents of bonded styrene in total styrene-butadiene rubber is 33-40 wt%. The contents of a vinyl group in butadiene is 35-45 wt%, and the raw rubber includes a solution-polymerization styrene-butadiene rubber having weight average molecular weight of 1,000,000 to 2,800,000 g/mol. The rubber composition for a tire tread can provide tire having total performances such as brake properties, low mileage properties, and wear resistance in excellent levels. |
