| 摘要 |
PURPOSE: A rubber composition for a bladder is provided to increase the life of bladder and to reduce the vulcanization time and the cost. CONSTITUTION: The rubber composition for a bladder comprises a rubber material composed of butyl rubber and 50 parts by weight or less of isobutylene-co-para-methylstyrene polymer, based on 100 parts by weight of the rubber material. The rubber composition further comprises 40 parts by weight or less of acetylene black as a filler and 3 to 8 parts by weight of neoprene as a crosslinking agent.
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