RADICAL-CURABLE SEALING MEMBER FOR FUEL CELLS
Provided is a radical-curable sealing member for fuel cells that has excellent product durability and suppresses changes in mechanical properties caused by heat and hydrolysis (such as reduced stretch and increased hardness caused by embrittlement). A sealing member 4 is a crosslinked product of a r...
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| creator | IMAI, Kentaro TANIGUCHI, Shota YAMAMOTO, Kenji NIMURA, Yasunori |
| description | Provided is a radical-curable sealing member for fuel cells that has excellent product durability and suppresses changes in mechanical properties caused by heat and hydrolysis (such as reduced stretch and increased hardness caused by embrittlement). A sealing member 4 is a crosslinked product of a radical-curable composition that contains components (A)-(E), there being 0.1-10 parts by mass of component (B) per 100 parts by mass of component (A). (A) A polymer for fuel cell sealing members that has a radical-curable functional group and also has at least one of a urethane linkage and an ester linkage in the molecular chain thereof. (B) A carbodiimide compound that has at least one functional group selected from the group that consists of ether groups, aliphatic hydrocarbon groups that have at least 3 carbons, and alicyclic hydrocarbon groups. (C) A monofunctional (meth)acrylic monomer. (D) A polyfunctional (meth)acrylic monomer. (E) A radical polymerization initiator. |
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A sealing member 4 is a crosslinked product of a radical-curable composition that contains components (A)-(E), there being 0.1-10 parts by mass of component (B) per 100 parts by mass of component (A). (A) A polymer for fuel cell sealing members that has a radical-curable functional group and also has at least one of a urethane linkage and an ester linkage in the molecular chain thereof. (B) A carbodiimide compound that has at least one functional group selected from the group that consists of ether groups, aliphatic hydrocarbon groups that have at least 3 carbons, and alicyclic hydrocarbon groups. (C) A monofunctional (meth)acrylic monomer. (D) A polyfunctional (meth)acrylic monomer. 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A sealing member 4 is a crosslinked product of a radical-curable composition that contains components (A)-(E), there being 0.1-10 parts by mass of component (B) per 100 parts by mass of component (A). (A) A polymer for fuel cell sealing members that has a radical-curable functional group and also has at least one of a urethane linkage and an ester linkage in the molecular chain thereof. (B) A carbodiimide compound that has at least one functional group selected from the group that consists of ether groups, aliphatic hydrocarbon groups that have at least 3 carbons, and alicyclic hydrocarbon groups. (C) A monofunctional (meth)acrylic monomer. (D) A polyfunctional (meth)acrylic monomer. 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| subjects | ADHESIVES BASIC ELECTRIC ELEMENTS CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DYES ELECTRICITY FILLING PASTES INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY USE OF MATERIALS THEREFOR WOODSTAINS |
| title | RADICAL-CURABLE SEALING MEMBER FOR FUEL CELLS |
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