▎ 摘　　要

NOVELTY - A high thermal conductivity composite phase change material comprises surface-modified carbon-based conductive filler and fatty acids. The surface-modified carbon-based conductive filler is surface-modified nano-graphite sheet, graphene or carbon nanotubes. The fatty acid is lanolin acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid and/or arachidic acid. USE - High thermal conductivity composite phase change material (claimed). ADVANTAGE - The composite phase change material has excellent thermal conductivity and stability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of high thermal conductivity composite phase change material, which involves (1) dispersing carbon-based conductive filler in surface modifying agent solution, mixing evenly, ultrasonically treating, filtering, washing, drying the surface-modified carbon-based conductive filler, surface modifying agent is melamine, sodium humate or dopamine, (2) heating fatty acid, melting, adding surface-modified carbon-based conductive filler to fatty acid melt, heating, ultrasonically treating to obtain a homogeneous dispersion, and mold curing.