| 摘要 |
PURPOSE: A tire tread rubber composition having improved anti-wear property, cut and chip property, repulsive elasticity, heating property and Tan delta(rotational resistance) is provided. CONSTITUTION: A tire tread rubber composition having improved anti-wear property and rotational resistance according to the present invention comprises new carbon black having good surface functional group, large particle diameter and large and broad aggregate size and distribution. In particular, the tire tread rubber composition comprises 100 parts by weight of styrene-butadiene rubber, butadiene rubber or styrene-butadiene rubber plus butadiene rubber; and 50 to 80 wt% of carbon black having iodine adsorption number of 60 to 80 mg/g, specific surface area by nitrogen adsorption of 60 to 80 m2/g, dibutylphthalate absorption of 120 to 140 cc/100g and color degree of 90 to 110%. |
