▎ 摘　　要

NOVELTY - Preparing sulfonic acid exchange resin comprises mixing and stirring the acrylamide, polypropylene alcohol, graphene solution and initiator for pre-polymerization to obtain mixed solution A, where weight ratio between acrylamide, polypropylene alcohol, graphene oxide and initiator is 50-75 wt.%:20-50 wt.%:0.01-15 wt.%:0.5-5 wt.% and (ii) mixing the mixed solution A and the polymerized monomer solution to carry out complete polymerization reaction to obtain composite resin, where the mass ratio of the mixed solution A to the polymer monomer solution is (0.9-1.2):(0.5-0.8) and (iii) pre-treating and transforming composite resin into final product. USE - The sulfonic acid exchange resin is useful for adsorbing copper ions in wastewater (claimed). ADVANTAGE - The method: increases the strength of sulfonic acid exchange resin and improves the removal rate of copper ions in wastewater by sulfonic acid exchange resin.