Carbonaceous composite material, process for production thereof, fuel cell separator, and polymer electrolyte fuel cell

Abstract

A carbonaceous composite material molded from a carbonaceous composite compound composed mainly of graphite, a thermosetting resin, and a fibrous base material, wherein molding is carried out in such a way that said fibrous base material is oriented in said carbonaceous composite material; a process for producing said carbonaceous composite material; a fuel cell separator having said carbonaceous composite material as a component; and a polymer electrolyte fuel cell. The carbonaceous composite material can be produced by injection molding, transfer molding or extrusion molding without difficulties encountered in the past. It has high strength, with a minimum amount of warpage. It contributes to productivity.

1 . A process for producing a carbonaceous composite material by transfer molding a mixture composed of 100 pbw of graphite, 15-45 pbw of thermosetting resin, and 3-35 pbw of fibrous base material.  
     
     
         2 . A process for producing a carbonaceous composite material by injection molding a mixture composed of 100 pbw of graphite, 15-45 pbw of thermosetting resin, and 3-35 pbw of fibrous base material.  
     
     
         3 . A process for producing a carbonaceous composite material as defined in  claim 1 , wherein the fibrous base material is oriented at 60-120 degrees with respect to the thickness direction of the molded product.  
     
     
         4 . A process for producing a carbonaceous composite material as defined in  claim 2 , wherein the fibrous base material is oriented at 60-120 degrees with respect to the thickness direction of the molded product.