Process for producing fabrics of polybenzimidazole fibers...

Details Process for producing fabrics of polybenzimidazole fibers... Process for producing fabrics of polybenzimidazole fibers...

H - Electricity

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H01M 8/10 (2006.01) B01D 71/62 (2006.01) D01F 11/08 (2006.01) D04H 1/06 (2006.01) D06M 11/55 (2006.01) D06M 11/70 (2006.01) D06M 13/256 (2006.01) D06M 23/10 (2006.01) H01M 2/16 (2006.01) H01M 8/02 (2006.01)

Patent

CA 2297121

A method for producing polybenzimidazole (PBI) fabrics for use as fuel cell or battery electrolytes by soaking a sulfonated or non-sulfonated PBI fabric in an acid solution, whereby the fibers of the fabric become swollen with the acid solution; and drying the fabric to remove residual water or methanol and concentrating the acid.

Cette invention se rapporte à un procédé servant à produire des toiles de polybenzimidazole (PBI) conçues pour être utilisées comme électrolytes de piles à combustible ou de batteries, ce procédé consistant à laisser tremper une toile de PBI sulfonée ou non sulfonée dans une solution acide, pour que les fibres de la toile gonflent avec la solution acide; et à faire sécher la toile pour éliminer l'eau résiduelle ou le méthanol et concentrer l'acide.

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