Fluoroesin-coated polymer film for reinforcing polymer electrolyte membrane, reinforced polymer electrolyte membrane, and membrane electrode assembly
Disclosed is a fluororesin-coated polymer film for reinforcing a polymer electrolyte membrane, wherein the fluororesin-coated polymer film is fabricated by forming on at least one side of a polymer film a coating of a reaction product of (A) a fluorine-containing copolymer composed of a fluoroolefin, a cyclohexyl group-containing acrylic ester, and a hydroxyl group-containing vinyl ether, and (B) a crosslinking agent having two or more isocyanate groups. The polymer film according to the present invention not only exhibits sufficiently high initial adhesion strength, with respect to the polymer electrolyte membrane, but also retains thereafter high adhesion strength in actual operating environments.
W. L. Gore & Associates, Co., Ltd.
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C08J C08G C08J C08J C09D H01M Y02P H01M H01M Y10T C08J C08G C08F C08F H01M H01M Y02E
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Hideki Hiroyoshi Shizu
Yamada Fujimoto Okazaki