▎ 摘　　要

NOVELTY - Non-wax phase change thermally conductive sheet includes 0.5-20 pts. wt. polymer matrix, 60-98 pts. wt. thermally conductive filler, 0.01-3 pts. wt. coupling agent, 0.1-10 pts. wt. diluent, 0.1-5 pts. wt. tackifier and 0.1-1 pts. wt. adjuvant. USE - Non-wax phase change thermally conductive sheet ADVANTAGE - The non-wax phase change thermally conductive sheet adopts a polymer matrix softened at low temperature to completely replace the wax material, which effectively solves the problems of drying and brittleness of the material after the material is aged, and combination of polymer matrix and other raw materials such as diluent has good fluidity under the temperature and pressure that meets the application environment of electronic devices, ensures a certain heat dissipation contact area, and thermal resistance is low, which can conduct heat conduction well and improve the heat dissipation effect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of the non-wax phase change thermally conductive sheet, which involves mixing the polymer matrix, tackifier, diluent and auxiliary agent, heating to 100-130degrees Celsius and stirring for 1.5-2.5 hours to form a uniformly dispersed melt material, adding the coupling agent and the thermally conductive filler into the melt material, heating to 80-120degrees Celsius in a vacuum environment and stirring for 0.5-1 hours to obtain a phase change material, and subjecting the phase change material to sheet pressing by a calendar to obtain a non-wax phase change thermally conductive sheet.