| 摘要 |
PURPOSE:To prepare a rubber composition having excellent resistance to nitrogen oxides and balanced oil resistance, freeze resistance, and heat aging characteristics, by compounding a terpolymer rubber composed of epichlorohydrin, ethylene oxide and allyl glycidyl ether, and a vulcanizing agent. CONSTITUTION:A terpolymer rubber composed of 45-75mol% epichlorohydrin, 22-54mol% ethylene oxide and 1-3mol% allyl glycidyl ether, is compounded with a vulcanizing agent to obtain the objective composition. The effect can be further improved by adding a metal compound selected from the oxide and hydroxide of the IIA-group metal of the periodic table, e.g. magnesia, quick lime, etc. to the composition. |
