RUBBER COMPOSITION OF TIRE TREAD

摘要

PURPOSE: A rubber composition of tire tread is provided to improve heat resistance and low rolling resistance, fatigue resistance and tear strength which are performance required for tire tread. CONSTITUTION: A rubber composition of tire tread comprises 100.0 parts by weight of natural rubber, 48-50 parts by weight of carbon black, and 1.0-1.1 parts by weight of sulfenamide-based accelerator. The carbon black has nitrogen adsorption specific area of 122-132 m^2/g, DBP oil absorption of 130-140 cc/100g, and tint value of 110-120. The sulfenamide-based accelerator comprises at least one selected from N-t-butyl benzothiazole-2-sulfenamide and N-cyclohexyl-2-benzothiazyl sulfonamide.