Patent ID: 9480960
Filing Date: 2016-11-01
CPC Classification: B01J,C09K,F28D,Y02E

Claim Text:
1. A process for preparing a phase change microcapsule having a thermally conductive shell, comprising the steps of: (A) providing a vinylsilane compound; (B) adding to the vinylsilane compound an acrylic monomer and a trace amount of initiator—benzoyl peroxide, which are stirred and heated in a oil bath to carry out a prepolymerization reaction and form a first solution; (C) adding a phase change material to a polyvinyl alcohol solution, which is then heated up to a temperature above the melting point of the phase change material to perform liquefaction and stirred uniformly, thereby forming a second solution; (D) adding the second solution to the first solution and stirring uniformly; and (E) adding ethylene glycol dimethacrylate and inorganic nano-powder, and then adding the initiator—benzoyl peroxide to carry out the polymerization encapsulation of the microcapsule by being heated in a stirred oil bath and obtain the phase change microcapsule having the thermally conductive shell; wherein the inorganic nano-powder is selected from aluminum oxide, aluminum nitride, boron nitride, silicon carbide, or combinations thereof; wherein the phase change microcapsule is a core-shell material, of which the shell material is a copolymer of the vinylsilane compound and the acrylic monomer; wherein the equivalent proportion of the acrylic monomer to the vinylsilane compound is from 10:1 to 10:3; wherein the acrylic monomer is methyl acrylate, methyl methacrylate, or hydroxyethyl methacrylate.