全氟磺酸树脂在氯碱膜中的作用机理探析  

Probing into the Mechanism of Perfluorinated Sulfonic Acid Resin in Chlor-alkali Membrane

作　　者：王学军 

机构地区：[1]山东东岳高分子材料有限公司,山东淄博256401 [2]东岳集团有限公司技术中心,山东淄博256401

出　　处：《化学世界》2013年第7期429-434,共6页Chemical World

基　　金：国家"十二五"科技支撑计划项目(2011BAE08B05)

摘　　要：根据氯碱膜电解的工作原理,分析了磺酸树脂层的微观结构,认为电驱动下的离子迁移与水传递是以水合离子通过膜通道的方式进行的。膜的离子交换基团主导离子簇和离子通道的形成。结合加工过程解释了离子通道的形成过程,提出曲折贯通的离子通道而非离子交换能力是磺酸层的主要作用机理。膜的离子透过性赋予膜以电导性,而离子的水传递数决定了氯碱膜的水通量大小。在膜中构建纳米通道可以为新一代氯碱膜的开发提供新的思路。According to the principle of chlor-alkali electrolyzation, the microstructure of the perfluorinated sulfonic acid （PFSA） resin layer, is analyzed and the working mechanism is put forward that the transport of ion and water is carried out by means of ion hydration. The ion-exchange functional groups dominate the formation of ion clusters and ion channels. Based on the manufacturing process, the formation of ion chan- nel is explained and the main mechanism of PFSA resin layer is due to flexural ion channel instead of ion- exchange capacity. The ion permeation performance endows the membrane with electric conductivity, while the water transfer number of Na＋ determines the water flux of membrane. It is a promising idea to build nano-scale channels in membrane to produce a new generation of chlor-alkali membrane.

关 键 词：全氟磺酸树脂 离子交换膜 离子通道 水通道 机理 氯碱工业 

分 类 号：TQ028.8[化学工程]