▎ 摘　　要

NOVELTY - Manufacturing superconductive graphene composite material includes ice water bath reacting graphite powder, adding concentrated sulfuric acid solvent, stirring, slowly adding sodium nitrate, potassium permanganate, sodium nitrate and N-methylpyrrolidone, stirring, heating, adding deionized water, stirring, stopping reaction, adding hydrogen peroxide, hot-filtering, centrifuging, and washing to obtain graphene oxide primary product; and adding cobalt chloride, carboxymethyl cellulose and diethylenetriamine pentamethylene phosphonic acid, and stirring to obtain oxidized graphene mixture. USE - Method for manufacturing superconductive graphene composite material. ADVANTAGE - The method is simple, achieves uniform graphitization, and has improved graphitization degree, and high purity and high yield graphite. The graphene composite material has excellent super-conductivity, mechanical performance and heat resistance performances, and better elongation at break, and acid and alkali corrosion resistances. DETAILED DESCRIPTION - Manufacturing superconductive graphene composite material comprises: (A) ice water bath heating 10 pts. wt. graphite powder at 8-12 degrees C, adding 14-18 pts. wt. concentrated sulfuric acid as solvent, stirring for 25-35 minutes, slowly adding 1-3 pts. wt. sodium nitrate, 1-3 pts. wt. potassium permanganate, 3-5 pts. wt. sodium nitrate and 8-12 pts. wt. N-methylpyrrolidone, stirring for 12-16 minutes, heating to 38-42 degrees C while stirring for 2.8-3.2 hours, heating to 100 degrees C, adding 45-55 pts. wt. deionized water, stirring for 15-25 minutes, stopping reaction, adding 18-22 pts. wt. 5% hydrogen peroxide, hot-filtering, centrifuging, and washing to obtain graphene oxide primary product; (B) adding 8-12 pts. wt. cobalt chloride, 5-9 pts. wt. carboxymethyl cellulose and 4-8 pts. wt. diethylenetriamine pentamethylene phosphonic acid, and stirring to absorb and obtain oxidized graphene mixture; (C) adding 4-8 pts. wt. nano-zinc powder, mixing, heating to 950-1050 degrees C at rate of 12-14 degrees C/minute for 26-28 hours to obtain reduced graphene oxide, adding 7-11 pts. wt. magnetic steel body and 36-46 pts. wt. diacetone alcohol, adding into sealed grinding container, placing to changeable magnetic field space, and stripping for 36-48 hours to obtain graphite nano-microchip-graphene dry powder mixture; and (D) sedimenting, centrifugally separating to obtain high purity graphene transparent suspension, adding nano-tin oxide powder, naphthalene, nano-cobalt aluminate powder, nano-antimony oxide powder and nano-titanium dioxide powder, mixing to 130-140 degrees C for 4-6 minutes, heating to 190-200 degrees C for 2-3 minutes, adding to double-screw extruder, granulating, and drying to 110 degrees C for 2.4 hours.