| 摘要 |
PURPOSE: A radial tire apex rubber composition is provided to ensure excellent compatibility with a rubber and dispersibility by empolying boehmite nano powder or gibbsite nano powder and to increase durability and thermal stability. CONSTITUTION: A radial tire apex rubber composition includes 1~30 parts by weight of boehmite nano powder or gibbsite nano powder based on 100.0 parts by weight of a base rubber. The boehmite nano powder or gibbsite nano powder show a hydrophilic property on the surface of the powders, wherein a specific surface area is 200±15 m^2/g and average particle size is 5~50 nm.
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