▎ 摘　　要

Filling with nano-materials is a common method to improve the thermal conductivity of phase change composites, and the dispersihility of nanomaterials is a key factor in enhancing thermal conductivity. In this paper, surface-initiated atom transfer radical polymerization (SI-ATRP) Was used to modify grapheme oxide (GO) firstly. and then the modified GO was employed to stabilize Pickering high internal phase emulsion. Finally GO/paraffin monolith with high thermal conductivity was obtained by one step polymerization. SI-ATRP introduced molecular brushes on GO to improve the dispersion of GO, which endowed the monolith with excellent heat conduction enhancement effect, even under low GO content. When the content of GO was only 0.41T of the composite material its thermal conductivity (3.968 W . m(-1) . K-1) was greatly improved compared to the thermal conductivity of pure paraffin (0.608 W . m(-1) . K-1). The leakage rate of phase change material was only 1.1%-1.3% after 1000 cycles, showing good shape stability and thermal reliability. The prepared shape-stable phase change material has potential applications in temperature control and energy storage applications.