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    • 8. 发明公开
    • NITRILE RUBBER COMPOSITION
    • 腈橡胶组合物
    • EP3020758A1
    • 2016-05-18
    • EP14823729.0
    • 2014-06-18
    • NOK Corporation
    • YAMOTO, HiromitsuKOMIYA, EijiAOYAGI, YuichiFURUKAWA, TomonoriKAISE, Tomohiro
    • C08L9/02C08K3/04C08K5/13C08K5/40F16C33/72F16J15/32
    • C08K3/04C08K5/13C08K5/40C08K2201/003C08K2201/014C08L9/02
    • A nitrile rubber composition comprising 5 to 50 parts by weight of carbon black, 5 to 60 parts by weight of graphite having an average particle diameter of 5 µm or less, 5 to 50 parts by weight of conductive carbon other than these carbon black and graphite, and 0.5 to 3.5 parts by weight of 2,5-di-tert-butylhydroquinone or 2,5-di-tert-amylhydroquinone as an antioxidant, based on 100 parts by weight of nitrile rubber. The nitrile rubber composition can yield a vulcanization molded product, besides maintaining characteristics as a conductive material, satisfying muddy water resistance, sealing properties, and low torque characteristics required for rolling bearing oil seals for vehicles, etc., and having a rubber volume change kept low when the product is washed with water after exposure to an antifreezing agent.
    • 一种丁腈橡胶组合物,其特征在于,含有炭黑5〜50重量份,平均粒径5μm以下的石墨5〜60重量份,除此以外的导电性碳5〜50重量份和石墨 以及作为抗氧化剂的0.5-2.5重量份的2,5-二叔丁基氢醌或2,5-二叔戊基氢醌,基于100重量份的丁腈橡胶。 除了保持作为导电材料的特性以外,丁腈橡胶组合物还可以得到硫化成型体,该特性满足车辆用滚动轴承用油封等所需的耐泥泞水性,密封性和低转矩特性,并且保持橡胶体积变化 当产品在暴露于防冻剂后用水清洗时较低。