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公开(公告)号：US20150371744A1
公开(公告)日：2015-12-24
申请号：US14767130
申请日：2014-02-05
申请人： NOK CORPORATION
发明人： Hiromitsu Yamoto , Eiji Komiya , Tomonori Furukawa
CPC分类号： H01F1/113 , C08K3/22 , C08K2003/2206 , C08K2003/2265 , C08K2201/01 , G01D5/245 , G06K7/087 , C08L9/02
摘要： A nitrile rubber composition comprising 1,000 to 1,200 parts by weight of a magnetic powder having a compressed density of 3.4 to 3.7, based on 100 parts by weight of nitrile rubber, hydrogenated nitrile rubber, or a blend rubber thereof, the rubber having a Mooney viscosity ML1+4 (100° C.) of 20 to 50. The nitrile rubber composition that does not undergo deterioration of roll processability and adhesion to molds during product vulcanization even when a large amount (e.g., 1,000 parts by weight or more) of magnetic powder is added based on 100 parts by weight of nitrile rubber, hydrogenated nitrile rubber, or a blend rubber thereof.
摘要翻译： 一种丁腈橡胶组合物，其包含1000至1,200重量份的压缩密度为3.4至3.7的磁粉，基于100重量份的丁腈橡胶，氢化丁腈橡胶或其共混橡胶，所述橡胶具有门尼粘度 ML1 + 4（100℃）为20〜50。即使在大量（例如，1,000重量份以上）磁性的情况下，即使在产品硫化期间也不会降低辊加工性和模具附着性的丁腈橡胶组合物 基于丁腈橡胶，氢化丁腈橡胶或其混合橡胶100重量份添加粉末。
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公开(公告)号：US20160152790A1
公开(公告)日：2016-06-02
申请号：US14904268
申请日：2014-06-18
申请人： NOK CORPORATION
CPC分类号： C08K3/04 , C08K5/13 , C08K5/40 , C08K2201/003 , C08K2201/014 , C08L9/02
摘要： 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.
摘要翻译： 一种腈橡胶组合物，其包含5至50重量份的炭黑，5至60重量份的平均粒径为5μm或更小的石墨，5至50重量份的除了这些炭黑和石墨之外的导电碳 ，和0.5〜3.5重量份的作为抗氧化剂的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。 丁腈橡胶组合物除了保持作为导电材料的特性外，还可以得到硫化成型品，满足车辆用滚动轴承油封等所需的耐水泥性，密封性，低扭矩特性，并且保持橡胶体积变化 当暴露于防冻剂后，产品用水洗涤时为低。
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公开(公告)号：US20160152789A1
公开(公告)日：2016-06-02
申请号：US14904264
申请日：2014-06-18
申请人： NOK CORPORATION
CPC分类号： C08K3/04 , C08K5/18 , C08K5/372 , C08K2201/014 , C08L9/02 , F16C33/72 , F16C41/002 , F16C2208/10 , F16J15/3284
摘要： 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 carbon black and graphite, and, as antioxidants, 1 to 5 parts by weight of alkylated diphenylamine comprising a diphenylamine reaction product with styrene and 2,4,4-trimethylpentene, and 0.5 to 2.5 parts by weight of N,N′-di-2-naphthyl-p-phenylenediamine or dilauryl thiodipropionate, 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 coefficient kept low when the product is washed with water after exposure to an antifreezing agent.
摘要翻译： 一种丁腈橡胶组合物，其包含5至50重量份的炭黑，5至60重量份的平均粒径为5μm或更小的石墨，5至50重量份的碳黑和石墨以外的导电碳， 作为抗氧化剂，含有苯乙烯和2,4,4-三甲基戊烯的二苯胺反应产物的烷基化二苯胺1〜5重量份，N，N'-二-2-萘基-p 苯二胺或硫代二丙酸二月桂酯，基于100重量份的丁腈橡胶。 丁腈橡胶组合物除了保持作为导电材料的特性以外，还可以得到硫化成型体，满足车辆用滚动轴承油封等所需的耐水泥性，密封性，低扭矩特性，并具有橡胶体积变化系数 当暴露于防冻剂后，产品用水洗涤时保持低温。
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