| abstract |
The present invention relates to a tire tread rubber composition, and more particularly, to a tire tread rubber composition, based on 100 parts by weight of a raw material rubber containing styrene butadiene rubber having a vinyl content of 70 to 80% and a styrene content of 20 to 30%. It relates to a tire tread rubber composition capable of improving wear resistance and braking performance, including 30 to 50 parts by weight of carbon black and 35 to 45 parts by weight of silica.n n n In the carbon black, an iodine adsorption value of 85 to 95 mg / g, a DBP adsorption value of 110 to 120 cc / 100 g, and an ASTM Tint of 110 to 120 can be used. Silica has a specific gravity of 0.8 to 1.2, ash content of 12.5 to 16.5 weight%, and melting. The thing with the physical property which is 60-72 degreeC can be used. |