| 摘要 |
PURPOSE: Provided is a rubber composition for a gum chafer, which can improve the endurance of tires by improving abrasion-resistance and improve productivity and reduce the cost by reducing the inferiority of air inlet of a bead part. CONSTITUTION: The rubber composition for the gum chafer contains a raw rubber comprising a natural rubber and a styrene butadiene rubber, 20-40phr of a butadiene rubber, 10-25phr of TR, 2.8-3.3phr of sulfur, 0.4-0.8phr of a vulcanizing accelerator, and 65-80phr of a filler such as carbon black HAF(high abrasion furnace) and HAF-HS(high abrasion furnace high structure). |
