| 摘要 |
PURPOSE: A tire tread rubber composition for a truck and a bus is provided, to improve the abrasion resistance and the attrition resistance by controlling the content of stearic acid and employing a mixture of a liquid isoprene rubber without using a aromatic oil as a pollutant. CONSTITUTION: The tire tread rubber composition comprises 100 parts by weight of a natural rubber; 0.2-0.7 parts by weight of a mixture of 2,2'-dibenzamidediphenyldisulfide and Fe-porphyrazine in the ratio of 1:2 instead of a process oil as a processing agent; 3-6 parts by weight of a liquid isoprene rubber; and 3-7 parts by weight of stearic acid. Preferably the ratio of the mixture of 2,2'-dibenzamidediphenyldisulfide and Fe-porphyrazine to stearic acid is 1:3 to 1:15 by weight. |
