Stable anion exchange membrane based on fluorinated aliphatic hydrocarbon and preparation method thereof

Anion exchange membranes may be used in electromembrane processes such as electrodialysis (water desalination, separation of inorganic substances from organic molecules, separation of specific inorganic ions, etc.), in situ ion exchange and ion substitution, electro-deionization for production of ultrapure water, polymer electrolyte membranes for alkaline fuel cells and electrolytic applications. The invention discloses an acid and alkali resistant fluorinated hydrocarbon-based anion exchange membrane and a preparation method thereof. In the first step, N-isopropylacrylamide and 1-vinyl imidazole are subjected to copolymerization. In a second step, the isopropylacrylamide-co-vinyl imidazole copolymer is mixed with poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-co-HFP) to obtain an interpolymer (IA-co-VI/PVDF-co-HFP), which is used to pour a film of a desired thickness. And quaternizing the obtained pouring film in an iodomethane solution. 阴离子交换膜可用于电膜方法，例如电渗析(水脱盐、从有机分子分离无机物、分离特定无机离子等)、原位离子交换和离子取代、用于生产