▎ 摘　　要

NOVELTY - Phase transition composite comprises core containing a phase transition material, and graphene. The core and graphene have adsorption structure of at least one graphene on core surface by electrostatic attractive force, and include a functional group having a different charge on surface. The phase transition composite includes 0.1-10 pts. wt. graphene. USE - The phase transition composite is useful as heat storage, superheat controlling electronics, solar, auto parts producing, building and textile materials (claimed). ADVANTAGE - The phase transition composite has excellent dimensional stability at high temperature, and is convenient to produce, and economical. DETAILED DESCRIPTION - Phase transition composite comprises core containing a phase change material, and graphene. The core and graphene have adsorption structure of at least one graphene on core surface by electrostatic attractive force, and include a functional group having a different charge to surface. The phase transition composite includes 0.1-10 pts. wt. graphene. The phase transition composite has heat of melting ( Delta Hm) and heat of crystallization ( Delta Hc) insuch a way that ( Delta Hm1- Delta Hm2)/ Delta Hm1 is less than or equal to 0.065 and ( Delta Hc1- Delta Hc2)/ Delta Hc1 is less than or equal to 0.09, where Delta Hm1 and Delta Hc1 are heat of melting and heat of crystallization of the phase change material, respectively and Delta Hm2 and Delta Hc2 are heat of melting and heat of crystallization of the phase change material after the addition of 1-3 pts. wt. graphene to 100 pts. wt. phase change material. An INDEPENDENT CLAIM is also included for producing phase transition composite, comprising (a) mixing first dispersion including the phase transition composite and first surfactant with second dispersion including graphene and second surfactant, where the first and second surfactant are ionic surfactant having different electric charge.