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    • 10. 发明申请
    • Coating material for fuel cell separator
    • 燃料电池分离器用涂料
    • US20040211943A1
    • 2004-10-28
    • US10466241
    • 2004-01-06
    • Masahiro OkaharaMinoru Shirahige
    • H01B001/24
    • C09D125/10C08K3/04C08L83/10C09D5/24C09D127/16H01B1/24H01M8/0206H01M8/0213H01M8/0221H01M8/0226H01M8/0228
    • In a coating for separators for fuel cells which is coated on a surface of carbon separators or metallic separators for fuel cells wherein graphite is used as a conductive material, copolymer of vinylidene fluoride (VDF) and hexafluoropropyrene (HFP) (VDF-HFP copolymer) are contained at not less than 10% by weight as a binder of the coating, an organic solvent having compatibility with the binder is used as a medium, a content ratio of the conductive material and the binder is in a range from 15:85 to 90:10 by weight, and a content of the organic solvent is in a range from 50 to 95% by weight. Furthermore, by using an emulsion of styrene-butadiene copolymer or the like as a binder, and by containing not less than 5% by weight as a resin component, and by preparing a content ratio of the conductive material and the binder in a range from 20:80 to 95:5 by weight, and by preparing a solid content in the coating in a range from 10 to 60% by weight, a superior coating which is also a water-based coating can be obtained.
    • 在用于燃料电池的碳隔板或金属隔板的表面上涂覆石墨作为导电材料的燃料电池用隔膜用涂料中,偏二氟乙烯(VDF)和六氟丙烯(HFP)(VDF-HFP共聚物)的共聚物, 含有不小于10重量%作为涂层的粘合剂,使用与粘合剂相容的有机溶剂作为介质,导电材料和粘合剂的含量比在15:85至 90:10,有机溶剂的含量为50〜95重量%。 此外,通过使用苯乙烯 - 丁二烯共聚物等的乳液作为粘合剂,并且通过含有不少于5重量%的树脂组分,并且通过制备导电材料和粘合剂的含量比在 20:80〜95:5,并且通过在涂层中制备固体含量为10〜60重量%的范围,可以获得也是水性涂料的优异涂层。