▎ 摘　　要

NOVELTY - A phase change microcapsule composite material comprises 35-85 wt.% phase change material core material and 15-65 wt.% polymer or high molecular polymer-graphene composite material wall material. USE - Phase change microcapsule composite material. ADVANTAGE - The method is simple and low-cost. The material has good coating rate and sealing, and high latent heat. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of phase change microcapsule composite material comprising taking core material and deionized water, mixing, adding emulsifier, emulsifying and homogenizing for 40-60 minutes at 50-60 degrees C, dispersing for 20-60 minutes to obtain uniform emulsion, taking wall material polymer monomer, dissolving in deionized water, regulating pH as value to 8-8.6, heating at 70-75 degrees C, stirring at rate of 450-600 revolutions/minute (rpm) for 1-3 hours, adding emulsion, adjusting pH value to 2.5-3.5, heating at 70-75 degrees C, stirring at rate of 600-800 rpm for 2.5-3.5 hours, washing with acetone and deionized water, drying, and filtering; or taking core material, emulsifier and organic solvent, dispersing for 40-60 minutes, adding polymer monomer, graphene and initiator, water bath heating at 50-70 degrees C, stirring at rate of 600-900 rpm for 9-12 hours, filtering, washing with acetone and deionized water, and drying.