REINFORCING MATERIAL FOR PROTON-CONDUCTING FILM, PROTON-CONDUCTING FILM COMPRISING SAME, AND SOLID POLYMER FUEL CELL

摘要

[Problem] To provide a reinforcement for a proton conductive membrane, which can improve the acid resistance and dimension stability. [Means for Resolution] A reinforcement which is formed from a glass fiber nonwoven fabric for use in a proton conductive membrane having an arylene group, wherein the reinforcement uses a resin binder containing an arylene group as a binding component for glass fibers constituting the glass fiber nonwoven fabric.