▎ 摘　　要

NOVELTY - Highly thermally conductive Silicon carbide (SiC)-reduced graphene oxide (rGO)-polypropylene-based composite dielectric material comprises 15-20 pts. wt. styrene-ethylene-butylene-styrene block copolymer, 5-22 pts. wt. SiC-rGO composite material, 1-2 pts. wt. antioxidant, 55-62 pts. wt. polypropylene, and 7-11 pts. wt. branched polypropylene. USE - Highly thermally conductive Silicon carbide-reduced graphene oxide-polypropylene-based composite dielectric material. ADVANTAGE - The highly thermally conductive Silicon carbide (SiC)-reduced graphene oxide (rGO)-polypropylene-based composite dielectric material has high thermal conductivity, good crystallinity, and enhances thermal conductivity of polypropylene and stability, and reduces brittleness of the material, enhances toughness of the material, reduces brittleness, i reduces dielectric loss of the material, and enhances dielectric performance of the polypropylene material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing high thermal conductivity SiC-rGO-polypropylene-based composite dielectric material, which involves: (A) weighing 15-20 pts. wt. styrene-ethylene-butylene-styrene block copolymer and 55-62 pts. wt. polypropylene in a twin-screw extruder, blending at 180-200 degrees C for 60 minutes, extruding the masterbatch, placing masterbatch in a plate vulcanizer, heating up to 190-210 degrees C, pressurizing at 8-12MPa for 15-20 minutes, cooling the material to room temperature, and preparing block copolymer material-polypropylene composite material; (B) weighing 5-22 pts. wt. SiC-rGO composite material, 1-2 pts. wt. antioxidant, 7-11 pts. wt. branched polypropylene; and (C) placing block copolymer-polypropylene composite material in a twin-screw extruder, blending at 190-210 degrees C for 40-60 minutes, and then extruding the material to prepare high thermal conductivity SiC- rGO-polypropylene-based composite dielectric material.