The silicone rubber constituent used for the manufacturing method and the method of the seal for polymer electrolyte fuel cell separators

Japanese Patent JP6048332

B2

PROBLEM TO BE SOLVED: To provide a method for manufacturing a seal for solid polymer type fuel battery separators which is superior in sealability without executing a post-curing process as a seal material for solid polymer type fuel battery separators; and a silicone rubber composition used in the method for manufacturing a seal for solid polymer type fuel battery separators.SOLUTION: A method for manufacturing a seal for solid polymer type fuel battery separators the steps of heating and molding a silicone rubber composition including (A)a silicon atom-bonded alkenyl group-containing organopolysiloxane, (B)a vinyl group-containing resinic copolymer including RSiOunits (where R represents a univalent hydrocarbon group) and SiOunits at a molar ratio [RSiO/SiO] of 0.5-1.5, (C)organohydrogenpolysiloxane, (D)fumed silica, (E)an addition reaction catalyst, and (F)a triazole-based compound and/or an imidazole-based compound, thereby forming a primary silicone rubber hardened material on a peripheral edge of a surface of a solid polymer type fuel battery separator, where the primary silicone rubber hardened material is made an elastic seal layer without performing a post-curing step thereon.

Masakatsu Hotta
Osamu Hayashida
Kashima Atsuto

JP2013147388A

December 21, 2016

July 16, 2013

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Shin-Etsu Chemical Co., Ltd.

H01M8/0271; C08K3/36; C08K5/3445; C08K5/3472; C08L83/05; C08L83/07; C09K3/10; H01M8/0202; H01M8/10

JP2002309092A
JP2003051325A

Takashi Kojima
Saori Shigematsu
Katsunari Kobayashi
Takeshi Ishikawa
Katsuhiko Masaki

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