| 摘要 |
PROBLEM TO BE SOLVED: To provide a curing composition for fuel cell, which cures easily by heating, and as characteristics after a cure, has low gas permeability, has low moisture permeability, and has good rubber elasticity. SOLUTION: In sandwiching a pair of reaction electrodes which sandwich a solid polymer electrolyte film with a pair of bipolar boards prepared in a fuel-gas pass, the curing composition for fuel cells is used for applying and sealing on the junction surface side of the above bipolar board and the outskirts of a reaction electrode. The curing composition for fuel cells consisting of following components, (A), (B), (C), and (D) as base components, is used. (A) Isobutylene system polymer which contains in a molecule at least one alkenyl group in which hydrosilylized reaction is possible, (B) Organo-hydrogen- polysiloxane, (C) Hydrosilylized catalyst, (D) Silane coupling agent. |
