| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a fuel cell separator material which is high in strength property, and has superior material property. <P>SOLUTION: This is the manufacturing method of the fuel cell separator material in which a resin solution is prepared by dissolving a mixture resin containing an epoxy resin that has a naphthalene ring as the main structure and a novolac type phenolic resin as its curing agent so that a phenolic hydroxyl group equivalent ratio against an epoxy group becomes a ratio of 0.5 to 1.5, an imidazole based curing accelerator, and a dispersant into an organic solvent. In this resin solution, by dispersing graphite powders wherein particulates of particle diameter of 1 to 30 μm have grain size characteristics of 30 to 90 wt.%, and the maximum particle diameter of 50 to 100 μm, a slurry is fabricated by preparing a resin solid content of the mixed resin at amount ratio of 10 to 35 pts.wt. against graphite powders 100 pts.wt., the slurry is coated on a film by the doctor blade method, and after drying it, a green sheet is fabricated by demolding it from the film, and molding under pressing and under heating is carried out by laminating the green sheet. <P>COPYRIGHT: (C)2009,JPO&INPIT |
