▎ 摘　　要

NOVELTY - A graphene/polyimide nanocomposite material comprises graphene powder, p-phenylenediamine, 4,4'-diaminobenzophenone, pyromellitic dianhydride, phenanthrene-1,8,9,10-tetracarboxylic dianhydride, triethylamine, N-methylpiperidine, dioctyl phthalate, nano calcium carbonate, montmorillonite, octodecyl imidazoline, glycidyl methacrylate grafted polyoxyethylene, montan ester wax, Tween 80 (RTM: polyoxyethylene (20) sorbitan monooleate), nano aluminum oxide, molybdenum disulfide, tetrahydrofuran, gamma -aminopropyltrimethoxysilane, vinyltri-n-butoxysilane, and deionized water. USE - Graphene/polyimide nanocomposite material. ADVANTAGE - The material has excellent performance, antistatic function and comprehensive performance, and improves bad dispersity issue, mechanical property and heat resistance. DETAILED DESCRIPTION - A graphene/polyimide nanocomposite material comprises 87-15 pts. wt. graphene powder, 58-70 pts. wt. p-phenylenediamine, 58-70 pts. wt. 4,4'-diaminobenzophenone, 58-70 pts. wt. pyromellitic dianhydride, 58-70 pts. wt. phenanthrene-1,8,9,10-tetracarboxylic dianhydride, 2-8 pts. wt. triethylamine, 1-6 pts. wt. N-methylpiperidine, 3-7 pts. wt. dioctyl phthalate, 2-5 pts. wt. nano calcium carbonate, 1-4 pts. wt. montmorillonite, 3-8 pts. wt. octodecyl imidazoline, 2-6 pts. wt. glycidyl methacrylate grafted polyoxyethylene, 0.5-3 pts. wt. montan ester wax, 2-4 pts. wt. Tween 80 (RTM: polyoxyethylene (20) sorbitan monooleate), 4-9 pts. wt. nano aluminum oxide, 7-13 pts. wt. molybdenum disulfide, 28-40 pts. wt. tetrahydrofuran, 2-6 pts. wt. gamma -aminopropyltrimethoxysilane, 1-5 pts. wt. vinyltri-n-butoxysilane, and 20-48 pts. wt. deionized water. An INDEPENDENT CLAIM is included for preparation of graphene/polyimide nanocomposite material comprising: (A) mixing graphene powder, nano aluminum oxide, molybdenum disulfide, tetrahydrofuran and deionized water, high speed stirring, ultrasonically dispersing, stirring at 60-80 degrees C for 2-5 hours, cooling to room temperature, adding gamma -aminopropyltrimethoxysilane and vinyltri-n-butoxysilane, mixing, high speed stirring and ultrasonically dispersing for 20 minutes, controlling system temperature to 60-90 degrees C, reacting for 5-10 hours to prepare modified graphene composite dispersion, and ball-milling to 200 mesh to prepared surface modified graphene composite powder; (B) mixing p-phenylenediamine, 4,4'-diaminobenzophenone, pyromellitic dianhydride and phenanthrene-1,8,9,10-tetracarboxylic dianhydride, adding triethylamine and N-methylpiperidine, heating at 40-90 degrees C, and stirring for 6-24 hours to obtain slurry; (C) adding surface modified graphene composite powder, dioctyl phthalate, Tween 80 (RTM: polyoxyethylene (20) sorbitan monooleate), nano calcium carbonate, montmorillonite, imidazoline, glycidyl methacrylate grafted polyoxyethylene, montan ester wax and glycerin, adding into high speed mixer having speed of 1200-1800 revolutions/minute, and mixing at 40-70 degrees C for 10-30 minutes to prepare granule; and (D) getting into double screw extruder, melting and extruding at 195-2058 degrees C, 210-220 degrees C, 220-230 degrees C, 205-215 degrees C and 180-200 degrees C at residence time of 2-5 minutes and pressure of 12-20 MPa, and pelleting by dry cooling.