Flexible multi-level phase change material having cross-linked network structure and preparation method therefor

The present invention relates to the technical field of polymer composites, and specifically to a flexible multi-level phase change material and a preparation method therefor. The present invention provides a flexible phase change material. The phase change material consists of the following components in parts by weight: 20-90 parts of a phase change function material, 5-75 parts of a cross-linked thermoplastic elastomer, 5-75 parts of thermoplastic resin, and 0-5 parts of a compatibilizer. Because the flexible phase change material obtained in the present invention has a cross-linked network structure, and the phase transition temperature thereof is multi-level, the flexible phase change material has high energy storage density; moreover, the method for the flexible phase change material can achieve large-scale industrial production.