Cation exchange membrane and preparation method thereof

• Main Authors: LI XIAOYU, FU RONGQIANG, LIAN WENYU, LIU ZHAOMING, LOU YUFENG, WANG DAN
• Format: Patent
• Language: Chinese; English
• Published: 25.05.2018
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING

The invention relates to a cation exchange membrane and a preparation method thereof. The cation exchange membrane is characterized in that the membrane has a semi-interpenetrating network structure and uses a microporous membrane as the support material, membrane pores are filled with functional polymer, and the functional polymer has a structure formed by the polymerization of allyloxy pyridinebenzene sulfonate or alkyl allyloxy pyridine benzene sulfonate. The preparation method includes the steps of firstly, performing monomer preparation, to be more specific, allowing sodium 4-hydroxybenzenesulfonate to have reaction with 3-halogenated propylene or 3-halogenated-2-alkyl propylene, and allowing the acquired product to have reaction with pyridine hydrochloride to obtain a monomer solution; secondly, forming the membrane, to be more specific, mixing the monomer solution with a crosslinking agent, an initiator and comonomer to form membrane making liquid, filling the membrane making liquid into the pores of t