The invention discloses a preparation method of a
phase change energy storage paraffin microcapsule with multiple
layers of
capsule shells. The method comprises the following steps: 1, mixing a trimesoyl
chloride active
monomer with
phase change paraffin, heating to form an
oil phase liquid, adding the
oil phase liquid to an aqueous emulsifier solution having a same temperature with the
oil phase liquid, and adding an
aqueous solution of an m-phenylenediamine cross-linking agent while stirring to prepare an oil-in-water
emulsion; 2, continuously stirring the above paraffin microcapsule
emulsion in a heat insulation state, adjusting the pH value of the paraffin microcapsule
emulsion to be greater than 8.0 in the stirring process, centrifuging after the stirring ends, and washing with water; and 3, adding the above paraffin microcapsule with the inner layer
capsule shell of
polyamide to a trihydroxymethyl aminomethane-HCl
buffer solution containing 4-(2-aminoethyl)-1,2-
resorcinol, dipping while continuously stirring at
room temperature, separating, washing with water, and
drying. The
energy storage paraffin microcapsule can prevent leakage of
capsule core paraffin in the
phase change process, has good endophilicity with water, and is in favor of transferring heat.