▎ 摘　　要

NOVELTY - Preparing phase-change heat storage material elastic film, comprises (1) mixing phase change wax and monomer A other than polyvinyl monomers to form oily solution, dissolving reversible addition-fragmentation chain transfer reagent in water to obtain aqueous solution containing reversible addition-fragmentation chain transfer, (2) adding oily solution into aqueous solution containing reversible addition-fragmentation chain transfer, stirring and dispersing to obtain coarse emulsion, shearing and crushing coarse emulsion to obtain fine emulsion, (3) deoxidizing fine emulsion, heating, adding water-soluble initiator, then adding pH regulator, reacting, adding polyvinyl monomer in monomer A, reacting, (4) adding monomer B to reaction emulsion in step 3, reacting, adding water-soluble initiator to react, cooling and filtering to obtain emulsion, and (5) adding wetting agent and thickener to emulsion, mixing, coating emulsion on release film, and drying to obtain final product. USE - The method is useful for preparing phase-change heat storage material elastic film. ADVANTAGE - The method: utilizes phase change wax as core material, acrylate block copolymer with AB structure as capsule emulsion of the shell layer, and thus prepares aqueous phase change heat storage material with elasticity of higher than 300% elongation at break after the emulsion is coated, and realizes high breaking strength, high and low temperature resistance and high resilience. DETAILED DESCRIPTION - Preparing phase-change heat storage material elastic film, comprises (1) mixing 30-70 pts. wt. phase change wax and 22.5-66.5 pts. wt. monomer A other than polyvinyl monomers to form oily solution, dissolving 0.2-2 pts. wt. reversible addition-fragmentation chain transfer reagent in 150-400 pts. wt. water to obtain aqueous solution containing reversible addition-fragmentation chain transfer, (2) adding the oily solution into an aqueous solution containing reversible addition-fragmentation chain transfer, stirring and dispersing for 0.5-2 hours to obtain coarse emulsion, and further shearing and crushing the coarse emulsion to obtain fine emulsion, (3) deoxidizing the fine emulsion and raising the temperature to 45-95 ℃, adding water-soluble initiator, reacting for 30-90 minutes, then adding pH regulator, continuously reacting for 2-4 hours, then adding polyvinyl monomer in monomer A, continuously reacting for 2-4 hours, (4) adding 1.5-17.5 pts. wt. monomer B to the reaction emulsion in step 3, reacting for 2-6 hours, adding water-soluble initiator to continue the reaction for 1-4 hours, cooling down to room temperature and filtering to obtain the emulsion, and (5) adding wetting agent and thickener to the emulsion, mixing, coating the emulsion on the release film, and drying to obtain the elastic film of the phase change heat storage material, where the A monomer includes the main monomer ethyl acrylate, and further includes 0-5 wt.% water-soluble monomer, 0-25 wt.% functional monomer and 0.1-5 wt.% polyvinyl monomer by the total mass of the A monomer, and the B monomers include 80-99 wt.% styrene and 1-20 wt.% polyvinyl monomers. An INDEPENDENT CLAIM is also included for phase-change heat storage material elastic film prepared by above method.