公开(公告)号：US20090130534A1

公开(公告)日：2009-05-21

申请号：US12227363

申请日：2007-04-13

申请人： Kazuhiko Otawa ,  Akira Hashimoto ,  Nobuhiko Ikeda ,  Kenichi Horiki ,  Toshimitsu Tanii ,  Hiromi Konishi ,  Hiroshi Itaya

发明人： Kazuhiko Otawa ,  Akira Hashimoto ,  Nobuhiko Ikeda ,  Kenichi Horiki ,  Toshimitsu Tanii ,  Hiromi Konishi ,  Hiroshi Itaya

IPC分类号： H01M8/02 ,  H01M8/10 ,  B29C43/02

CPC分类号： C04B35/536 ,  C04B35/83 ,  C04B2235/425 ,  C04B2235/5212 ,  H01M8/0213 ,  H01M8/0221 ,  H01M8/0226 ,  H01M8/0228 ,  Y02P70/56

摘要： In order to attain excellent electrical conductivity and molding processability, a fuel cell separator to be produced by performing press molding on a preform in which expanded graphite is used as the main raw material is improved so that the preform is produced by a papermaking method, whereby the characteristics of the mechanical strength, the flexibility, and the gas impermeability are improved, and the moldability is made excellent so that a light and compact configuration that is preferred in the automobile use or the like can be realized. In a fuel cell separator which is to be produced by performing press molding on a preform 14 that is formed into a plate-like shape, with a molding die, therefore, the preform 14 is configured into a sandwich structure where a first sheet 14A made by impregnating a sheet-like member with a phenol resin, the sheet-like member being obtained by a papermaking process using a raw material in which a fibrous filler is added to expanded graphite, is interposed between a pair of second sheets 14B in which a phenol resin is applied to graphite.

摘要翻译： 为了获得优异的导电性和成型加工性，通过对以膨胀石墨为主要原料的预成型体进行加压成型而制造的燃料电池用隔膜得到改善，通过造纸方式制造预成型体，由此 提高了机械强度，柔软性和气体不透性的特性，并且成型性优异，从而可以实现在汽车用途等中优选的轻型和紧凑型结构。 因此，在通过对成形为板状的预成型体14进行加压成形而制造的燃料电池用隔板中，因此，在成型模具中，将预成型体14构成为第一片14A 通过用酚醛树脂浸渍片状构件，通过使用其中向膨胀石墨中加入纤维状填料的原料的造纸方法获得的片状构件插入在一对第二片14B之间，其中 将酚醛树脂应用于石墨。