PREPARATION OF MICROCAPSULE USING PHASE CHANGE MATERIAL

Disclosed is a method for preparing a microcapsule containing a phase change material, comprising: a first encapsulation stage comprising adding a phase change material of 3-50% to a surfactant-containing solution of 0.1-10 wt% of water, adding a first monomer of 10-40 %by weight of the phase change material to the solution so as to form an emulsified mixture, and adding an initiator of 0.005-1.0 wt% to the mixture, followed by polymerization; and a second encapsulation stage comprising adding a second monomer of 20-50 % by weight of the phase change material, and adding an aldehyde- or dËsocyanate-containing compound of 30-500 % by weight of the second monomer, followed by crosslinking. The microcapsule includes two coating layers for protecting the phase change material, so that the phase change material present within the microcapsule does not leak to the outside. Also, the microcapsule has a compact structure and can be prepared in the form of a particle having a size of the micrometer level or smaller, so that it has high thermal conductivity leading to high thermoresponsivity.