▎ 摘　　要

NOVELTY - Preparing toughening high heat-conducting filler based on thermosetting resin involves firstly dispersing the functionalized carbon material in the solvent A, then dropping isocyanate into the obtained functionalized carbon material solution, performing differential centrifugal treatment, subjecting obtained solid for vacuum drying, firstly adding the unsaturated anhydride and isocyanate into the solvent, then adding nitrile rubber and solid product, stirring and reacting, stirring and evaporating the solvent to obtain product. USE - Method for preparing toughening high heat-conducting filler based on thermosetting resin used for improving the toughness and heat conductivity of the thermosetting resin (claimed). ADVANTAGE - The method improves the toughness and heat conductivity of the material, improves heat-conducting coefficient of the epoxy resin E-51 to 0.3813W/m K, and elastic modulus to 1744.6N/mm2.