Flexible multistage phase-change material with cross-linked network structure and preparation method thereof

The invention belongs to the technical field of polymer composite materials, and particularly relates to a flexible multistage phase-change material and a preparation method thereof. The invention provides the flexible phase-change material. The phase-change material is composed of the following components in parts by weight: 20-90 parts of a phase-change functional material, 5-75 parts of a cross-linked thermoplastic elastomer, 5-75 parts of thermoplastic resin and 0-5 parts of a compatibilizer. The obtained flexible phase-change material has a cross-linked network structure, the phase transition temperature of the flexible phase-change material is multistage, and the flexible phase-change material has high energy storage density; and the method for the flexible phase-change material canrealize large-scale industrial production. 本发明属于高分子复合材料技术领域，具体涉及一种柔性多级相变材料及其制备方法。本发明提供一种柔性相变材料，所述相变材料由以下成分组成：相变功能材料20～90重量份，交联的热塑性弹性体5～75重量份，热塑性树脂5～75重量份，增容剂0～5重量份。本发明所得柔性相变材料具有交联网络结构，其相转变温度具有多级性，具有较高的储能密度；并且该柔性相变材料的方法可实现大规模工