Multiple quaternary ammonium salt anion exchange membrane and preparation method thereof

• Main Authors: FANG JUN, YANG YIXU, LU XIAOHUAN
• Format: Patent
• Language: Chinese; English
• Published: 19.06.2013
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; THEIR RELEVANT APPARATUS; TRANSPORTING

A multiple quaternary ammonium salt anion exchange membrane and a preparation method thereof relate to an anion exchange membrane. The chemical structure of the multiple quaternary ammonium salt anion exchange membrane is high-molecular polymer with multiple quaternary ammonium salts on side chains. The preparation method comprises the following steps: placing a polymer membrane in an irradiationroom, performing high energy ray irradiation; dipping the polymer membrane after irradiation in a solution with monomer halomethyl styrene for reaction; soaking a membrane obtained in the first grafting reaction in a solution with monomer triethylenediamine for reaction; soaking the membrane after crosslinking quaternarization in a solution with monomer dihalomethyl benzene for reaction; soaking the membrane after the alkylation reaction in a quaternarization reagent for reaction to obtain the product. The prepared anion exchange membrane has high conductivity, good thermal stability, and chemical stability, and is ap