C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 5/22 (2006.01) H01M 8/10 (2006.01)
Patent
CA 2176560
A method for making a composite fluorinated ion exchange membrane is provided comprising applying a continuous fluorinated ion exchange polymer film to a porous reinforcing substrate, preferably made from a polyolefin such as linear high density polyethylene. The composite membrane is made by applying a solvent to the surface of the film and/or the substrate and then affixing the reinforcing substrate. These reinforced membrane may advantageously be used as separators in fuel cells, and as selective barriers in permeation separation and facilitated transport operations.
Procédé de préparation d'une membrane échangeuse d'ions fluorée composite, consistant à appliquer un film continu d'un polymère échangeur d'ions fluoré sur un substrat poreux de renfort, de préférence composé d'une polyoléfine du type polyéthylène haute densité. La membrane composite est réalisée par application d'un solvant à la surface du film et/ou du substrat puis par fixation subséquente du substrat de renfort. Ces membranes renforcées peuvent servir de séparateurs dans les piles à combustible et de barrières sélectives dans la séparation par perméation et les transferts facilités.
Bennett Jones Llp
E. I. Du Pont de Nemours And Company
LandOfFree
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