METHOD FOR PREPARING SULFONATED POLYPHOSPHAZENE COPOLYMER PROTON EXCHANGE MEMBRANE MATERIAL AND SULFONATED POLYPHOSPHAZENE COPOLYMER PROTON EXCHANGE MEMBRANE

摘要

A method for preparing a sulfonated polyphosphazene copolymer proton exchange membrane material and a sulfonated polyphosphazene copolymer proton exchange membrane. The method comprises: subjecting a bromo-polyphosphazene-containing macromolecule initiating agent and atom transfer radicals of styrene and 4-acetoxyl styrene to reaction to obtain a grafted copolymer; carrying out hydrazinolysis on the copolymer with hydrazine hydrate to obtain a hydroxyl-containing copolymer; subjecting 1,4-butyl sultone to reaction to obtain a sulfonated copolymer; and in the presence of methane sulfonic acid, subjecting 2,6-bis(hydroxymethyl)-4-methylphenol (BHMP) serving as a cross-linking agent and the polymer to cross-linking reaction to obtain a cross-linked proton exchange membrane. The cross-linked grafted copolymer membrane has high proton conductivity, low methanol prevention property and low cost, and has an ideal effect in the application of fuel cells as a proton exchange membrane material.