RUBBER COMPOSITION FOR TIRE

摘要

PURPOSE: A rubber composition for a tire is provided, to recycle waste tire without deterioration of the physical properties of the rubber composition by using rubber powder of waste tire and the uncured waste rubber. CONSTITUTION: The rubber composition comprises 100 phr of rubber selected from the group consisting of a styrene-butadiene rubber, a butadiene rubber and a natural rubber; 5-30 phr of rubber powder produced from waste tire; and 5-30 phr of the uncured waste rubber produced in the preparation process of a tire. Preferably the rubber powder has a particle size of 45-250 micrometers. The rubber powder or the uncured waste rubber contains a styrene-butadiene rubber, a butadiene rubber or a natural rubber.