Electrically conductive resin composition
AssigneeNok Corporation
InventorsKatsutoshi Ishioka, Shigeru Watanabe, Takaaki Yasudomi
Life of this patent
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Abstract
An electroconductive resin composition, which comprises a thermosetting resin as a matrix and 40 to 90% by weight, on the basis of the composition, of carbon fibers and graphite as fillers, has a high electroconductivity and is suitable for use as a molding material for fuel cell separators. By using a molding material comprising phenol resin as a matrix and at least one kind of carbon fibers and graphite being coated by an electroconductive metal and molding fuel cell separators from the molding material, followed by post-curing at 130 to 300° C., fuel cell separators with a stable power generation capacity can be obtained.
Claims5
A resin-coated metallic thin plate for a fuel cell, which comprises a metallic thin plate and a resin coat layer of an electroconductive resin composition comprising a thermosetting resin as a matrix and 40 to 90% by weight, on the basis of the composition, of carbon fibers and graphite as fillers, formed by insert moldings.
A process for producing a fuel cell separator, which comprises molding a fuel cell separator from an electroconductive resin composition comprising phenol resin as a matrix and 40 to 90% by weight, on the basis of the composition, of carbon fibers and graphite fillers, where at least one kind of the carbon and graphite is coated with an electroconductive metal, as a molding material, followed by post-curing at 130 to 300° C.
Dependencies are inferred from the claim text.