Ceramic-based metal microcapsule/organic phase change composite material and preparation method thereof

The invention discloses a preparation method of a ceramic-based metal microcapsule/organic phase change composite material, which comprises the following steps: S1, uniformly stirring a metal phase change microcapsule precursor, a pore forming agent, a ceramic material and a sintering aid, and drying to obtain a porous ceramic mixture; s2, mixing with a polyvinyl alcohol solution, and then carrying out die-casting molding to prepare a porous ceramic prefabricated sample; s3, performing heat treatment on the porous ceramic framework in an atmosphere furnace, and cooling to obtain the porous ceramic framework based on the metal phase change microcapsules; and S4, dipping the ceramic-based metal microcapsule in an organic phase change material, and finally preparing the ceramic-based metal microcapsule/organic phase change composite material after high-temperature vacuum dipping. By adopting a mode of combining binary phase change materials, the problems of poor thermal cycling performance, low thermal conductiv