| 摘要 |
PURPOSE: An innerliner rubber composition is provided to effectively disperse static electricity stored inside, and to improve electric conductivity by using specific two kinds of conductive carbon material as a reinforcing agent. CONSTITUTION: An innerliner rubber composition comprises 1-10 parts by weight of carbon black and graphite, and 100.0 parts by weight of crude rubber. DBP of the carbon black is 450-550 ml/100g, BET is 1250-1300 m^2/l, and apparent density is 100-130 g/l. Density of the graphite is 0.5-0.7 g/cm^3, DBP is 45-55 g/100g, and BET is 3.95-4.05 m^2/g. The cure rubber is a mixed rubber of a natural rubber and a butadiene rubber. The weight ratio of the carbon and the graphite is 1-9:9-1.
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