▎ 摘　　要

NOVELTY - Aerogel-based phase change composite material comprises an aerogel as a carrier, and an organic phase change material which is loaded and encapsulated in the aerogel, where the aerogel is prepared by mixing and reacting nano-sheet dispersion liquid and cross-linking agent solution, freezing and drying. USE - The composite material is useful as thermal management material for precision electronic components in a closed space (all claimed). ADVANTAGE - The phase change material has theoretical encapsulation rate as high as 98%; can effectively suppress the leakage during the phase change process; has extremely high latent heat of phase change, excellent thermal conductivity, stable recycling performance and high insulation, thermal management performance in both simulated environment and actual test environment. DETAILED DESCRIPTION - An independent claim is also included for the preparing composite material comprising: (i) stripping a multilayer material by an intercalation method to obtain a nanosheet dispersion solution, mixing the nanosheet dispersion solution and a cross-linking agent solution, fully stirring, performing freeze-molding after stirring is completed, and finally freeze-drying to obtain an aerogel, (ii) heating the organic phase change material in a vacuum drying oven to thoroughly melt the organic phase change material, placing the aerogel prepared on the molten organic phase change material, fully adsorbing the organic phase change material into the three-dimensional pores of the aerogel, and cooling to room temperature to obtain the aerogel-based phase change composite material.