| 摘要 |
PROBLEM TO BE SOLVED: To obtain a fuel battery separator high in electric conductivity, thermal conductivity, mechanical strength and dimensional precision of a groove only by molding while skipping a carbonizing step and a cutting step. SOLUTION: A resin composition containing a non-carbonaceous thermoplastic resin (a polyphenylene sulfide resin or the like) and an electrically conductive agent (graphite particles, electrically conductive carbon black or the like) is molded into a sheet and the obtained sheet is subjected to stamping molding by using a grooved die to obtain the objective separator. The weight ratio of the thermoplastic resin to the electrically conductive agent is made to be 5:95-50:50. The obtained separator has 0.001-0.15 Ωcm volumetric resistance in the thickness direction, 30-200 MPa bending strength and 2-60 W/mK thermal conductivity in the thickness direction. |
