RUBBER COMPOSITION FOR A TIRE TREAD WITH EXCELLENT TIRE HANDLING BY IMPROVING HARDNESS AND HAVING EXCELLENT WET ROAD BRAKING PERFORMANCE AND ROTATION RESISTANCE PERFORMANCE

摘要

PURPOSE: A rubber composition for a tire tread minimizes the energy loss generated by repeating deformation of a composite material in a tire tread part, thereby improving rotation resistance performance while braking performance is maintained.;CONSTITUTION: A rubber composition for a tire tread comprises 100.0 parts by weight of a raw rubber, 40-70 parts by weight of a surface-modified nanosilica which is a filler for the raw rubber and has a specific surface area of 200 m^2/g. The raw rubber consists of 100.0 parts by weight of the raw rubber, 30-70 part by weight of a solution-polymerized styrene butadiene rubber which has 25% of styrene and 55% of vinyl; 10-60 parts by weight of emulsion-polymerized styrene butadiene rubber which has 41% of styrene and 18% of vinyl; and 5-15 parts by weight of butadiene rubber.;COPYRIGHT KIPO 2013