Resin composition for dense fuel cell separators
AssigneeNisshinbo Chemical Inc.
InventorsFumio Tanno, Yasuhito Nakagawa
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Abstract
The present invention is a resin composition for dense fuel cell separators, which contains a graphite powder and an epoxy resin component that contains a base material, a curing agent and a curing accelerator, and wherein: the graphite powder has a spring back of 20-70% and an average particle diameter d50 of 30-100 μm; and the curing accelerator is an imidazole compound that has an aryl group in the 2-position. This resin composition for dense fuel cell separators enables the achievement of a dense separator for fuel cells, which satisfies a predetermined performance even in cases where the separator is compression molded in a short time that is less than 10 seconds.
Claims8
A dense fuel cell separator which is obtained by molding a resin composition for dense fuel cell separators, the resin composition comprising graphite powder and an epoxy resin component that includes a base resin, a curing agent and a curing accelerator,
- wherein the dense fuel cell separator has a total organic carbon(TOC) value of 7 ppm or less,
- wherein the graphite powder has a springback of between 20 and 70% and an average particle size d50 of from 30 to 100 μm, and
- wherein the curing accelerator is an imidazole compound having an aryl group at position 2.
Dependencies are inferred from the claim text.