Disclosed is a hydrogenated nitrile rubber composition comprising 100 parts by weight of hydrogenated nitrile rubber having a bound acrylonitrile content of 31 to 50% and an iodine value of 30 mg/100 mg or less, 30 to 300 parts by weight of carbon black having a particle size of 61 nm or more and/or other filler, 0.5 to 30 parts by weight of a polyfunctional unsaturated compound cocrosslinking agent, and 1 to 10 parts by weight of an organic peroxide. The hydrogenated nitrile rubber composition has excellent roll processability and can be suitably used as a vulcanization-molding material for a cup gasket or bellows having excellent LLC resistance used in a water pump mechanical seal.
本发明公开了一种氢化
丁腈橡胶组合物,该组合物包括 100 重量份的氢化
丁腈橡胶(其结合
丙烯腈含量为 31 至 50%,
碘值为 30 毫克/100 毫克或更低)、30 至 300 重量份的
炭黑(其粒径为 61 纳米或更大)和/或其他填料、0.5 至 30 重量份的多官能度不饱和化合物
交联剂,以及 1 至 10 重量份的有机过氧化物。氢化
丁腈橡胶组合物具有优异的轧制加工性,可适当用作
硫化成型材料,用于
水泵机械密封中具有优异抗 LLC 性能的杯垫或波纹管。