Member for fuel cell and method for manufacturing same
AssigneeSumitomo Riko Company Limited
InventorsYasunori Nimura, Shota Taniguchi, Koji Morihara
Life of this patent
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Abstract
A member for a fuel cell in which a lip 4b is directly fixed to the surface of a separator 5. In the member for a fuel cell, the lip 4b is a cross-linked body of a radically curable composition containing components (A) to (E) below at a specific ratio, and the glass transition temperature (Tg) of the cross-linked body is −30° C. or less. (A) (Meth)acrylic polymer having a (meth)acryloyl group at a molecular chain end. (B) Monofunctional (meth)acrylic monomer having a glass transition temperature (Tg) of 0° C. or more and having a polycyclic structure. (C) Monofunctional (meth)acrylic monomer except for component (B). (D) Polyfunctional (meth)acrylic monomer. (E) Radical polymerization initiator.
Claims9
A member for a fuel cell comprising:
- a base material for a fuel cell;
- and
- a seal member that is directly fixed to a surface of the base material for a fuel cell,
- wherein the seal member is a cross-linked body of a radically curable composition which contains the following component (D) at a proportion of 1 to 10 parts by weight and the following component (E) at a proportion of 0.01 to 10 parts by weight with respect to 100 parts by weight of the following component (A) and in which a content of the following component (B) with respect to a total weight of the following components (A) to (C) is 5% to 25% by weight, and
- a glass transition temperature Tg of the cross-linked body is −30° C. or lower,
- (A) a (meth)acrylic polymer having a (meth)acryloyl group at a molecular chain end,
- (B) a monofunctional (meth)acrylic monomer having a glass transition temperature Tg of 0° C. or higher and having a polycyclic structure,
- (C) a monofunctional (meth)acrylic monomer excluding the component (B),
- (D) a polyfunctional (meth)acrylic monomer, and
- (E) a radical polymerization initiator.
Dependencies are inferred from the claim text.