▎ 摘　　要

NOVELTY - Preparing high heat-conducting far infrared nano ceramic-graphene composition material comprises (i) adding graphite sheet into mixed acid liquid, ultrasonically dispersing, adding potassium permanganate to the suspension, heating and performing oxidation reaction, adding water and hydrogen peroxide to finish the reaction, collecting lower precipitate and washing, (ii) dissolving bis (4 phenyl) ether into N,N-dimethyl formamide, adding 4,4'-oxygen diphthalic anhydride solution, reducing the temperature and performing polymerization, pouring reaction product into acetone to precipitate, filtering and collecting filter cake, and washing, (iii) taking polymerization product, triethylamine are dissolving in water, adding modified graphene and far infrared ceramic powder into polymer solution, adding polyvinyl pyrrolidone into suspension and (iv) heating polymerization and performing imidization in air atmosphere, sintering heat treated imidized polymerization in an oxygen-free environment. USE - The method is useful for preparing high heat-conducting far infrared nano ceramic-graphene composition material. DETAILED DESCRIPTION - Preparing high heat-conducting far infrared nano ceramic-graphene composition material comprises (i) adding 2-3 pts. wt. graphite sheet into 500-750 pts. wt. mixed acid liquid, ultrasonically dispersing to obtain graphite sheet suspension, continuously adding 10-15 pts. wt. potassium permanganate to the suspension, heating and performing oxidation reaction, sequentially adding 75-150 pts. wt. water and 3-5 pts. wt. hydrogen peroxide to finish the reaction, after finishing the reaction, centrifuging the product, collecting the lower precipitate, precipitating and washing by water, drying to obtain modified graphene, (ii) under anaerobic condition, dissolving 2-4 pts. wt. bis (4 phenyl) ether into 25-50 pts. wt. N,N-dimethyl formamide, continuously adding 3-6 pts. wt. 4,4'-oxygen diphthalic anhydride to the solution, reducing the temperature and performing polymerization, after the reaction, pouring the reaction product into 200-400 pts. wt. acetone to precipitate, filtering and collecting the filter cake, washing the filter cake by acetone, freeze drying to obtain polymerization product, (iii) taking 0.5-3 pts. wt. polymerization product, 0.1-0.15 pts. wt. triethylamine are dissolving in 75-150 pts. wt. water to obtain polymer solution, adding 1-2.5 pts. wt. modified graphene and 25-50 pts. wt. far infrared ceramic powder into the polymer solution, after ultrasonic dispersion treatment to obtain uniformly dispersed suspension, continuously adding 0.5-1.5 pts. wt. polyvinyl pyrrolidone into the suspension, mixing to obtain uniform blank, and (iv) freeze drying the blank to obtain polymerization, heating polymerization and performing imidization in the air atmosphere, sintering the heat treated imidized polymerization in an oxygen-free environment to obtain high heat-conducting far infrared nano ceramic-graphene composition material. An INDEPENDENT CLAIM is also included for a high heat-conducting far infrared nano ceramic graphene composition material, prepared by above-mentioned method.