Boron nitride-based aerogel reinforced phase change energy storage composite material and preparation method thereof

The invention discloses a boron nitride-based aerogel reinforced phase change energy storage composite material and a preparation method thereof.The preparation method comprises the steps that boron nitride precursor whiskers and (BN or carbon) nanotubes serve as raw materials, boron nitride nanowhiskers are formed through in-situ conversion of a boron nitride precursor, and soft-hard reactive chemical bonding of the (BN or carbon) nanotubes in the raw materials is achieved. According to the three-dimensional porous aerogel formed by the in-situ converted boron nitride nanowhiskers and the raw material nanotubes through mutual chemical bond connection, the formation of a heat conduction channel is realized, the shape stability and the mechanical property of the overall structure are improved, and the shaping and leakage prevention effects on the organic solid-liquid phase change material are achieved. 本发明公开了一种氮化硼基气凝胶增强相变储能复合材料及其制备方法，该制备方法以氮化硼前驱体晶须和(BN或碳)纳米管为原料，通过氮化硼前驱体原位转化形成氮化硼纳米晶须，实现对原料中(BN或碳)纳米管的"软-硬"反应性化学结