Abstract:Microencapsulated phase change material is the microencapsulation of phase change materials,in order to effectively improve the thermal performance of phase change material through elimination of leakage and phase separation.It is a research focus in the field of heat storage in recent years.The choice of core and shell materials of microencapsulated phase change material is firstly introduced.Secondly,the commonly used preparation methods of microencapsulated phase change material are introduced from three aspects of physical method,physical chemical method and chemical method,such as spray drying method,sol-gel method,complex condensation method,interface polymerization and microemulsion polymerization.Subsequently,the characterization of microencapsulated phase change material is analyzed,including physical properties (embedding rate,particle size distribution),chemical properties (Fourier transform infrared spectroscopy analysis,X-ray diffraction analysis) and thermal properties (phase change heat storage,phase change performance,thermal stability).Finally,the researches of microencapsulated phase change material are summarized and prospected.