聚酰亚胺具有优良的物理化学性质,广泛用于制作气体分离膜材料,尤其是在天然气提氦及其他气体分离领域具有重大潜力。综述了聚酰亚胺基气体分离膜的主要改性方法和最新进展,重点介绍了合成改性、热交联改性、紫外辐射交联改性、化学改性和共聚改性,并对聚酰亚胺基气体分离膜材料的发展进行了展望。
Polyimides(PI) had excellent physical and chemical properties.They have been extensively applied as membrane fabrication materials for extracting helium from natural gas and other gas separation.The modification methods and recent progress of PI-based gas separation membranes were reviewed,layed emphasis on synthetic modification,thermal crosslinking modification,UV radiation crosslinking modification,chemical modification and copolymerization modification.At latest,the future directions of polymide-based gas separation membranes were predicted and suggested.
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基金资助
中国石油化工股份有限公司项目(219020-2)
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