| 摘要 |
Provided is a rubber composition for inner liner of radial pneumatic tire for truck or bus which overcomes an air-indraft problem of inner liner part occurring during manufacturing process and has improved anti-air permeation and anti-cracking properties of inner liner part. The rubber composition for inner liner of radial pneumatic tire for truck or bus comprises a raw rubber comprising 70-95 parts by weight of halogenated isobutylene-isoprene rubber and 5-30 parts by weight of natural rubber, and a butyl tube reclaimed rubber as filler. The amount of the natural rubber is 5-50 parts by weight based on 100 parts by weight of the raw rubber. The butyl tube reclaimed rubber comprises 30-70 wt% of isobutylene-isoprene rubber and 20-50 wt% of carbon black.
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