▎ 摘　　要

NOVELTY - Modified graphene nanomaterial comprises 12-20 pts. wt. graphite oxide, 30-34 pts. wt. deionized water, 24-30 pts. wt. alcohol-water mixed solvent, 6-10 pts. wt. sodium aminobenzene sulfonate, 2-3 pts. wt. nano-catalyst, 8-12 pts. wt. resin polymer, 4-6 pts. wt. wear-resistant ceramic powder, 2-3 pts. wt. carbon fiber, 1-2 pts. wt. diamond powder, 1-2 pts. wt. quartz glass fiber, 1-2 pts. wt. modified bauxite, 1-2 pts. wt. aluminum alloy powder, 1-2 pts. wt. modified calcium carbonate powder and 1-2 pts. wt. zirconia. USE - The modified graphene nanomaterial is useful in microelectronic device or electronic components (claimed). ADVANTAGE - The nanomaterial has high thermal conductivity and heat dissipation material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the nanomaterial, involving (a) adding graphite oxide to a grinding equipment, grinding to obtain graphite oxide powder, (b) adding the graphite oxide powder and deionized water to a reactor, treating for 1-2 hours under an ultrasonic power of 300-500 W, centrifuging at 8000-10000 rpm for 5-8 minutes, and removing the precipitate by filtration to obtain a graphene oxide dispersion, (c) mixing the graphene oxide dispersion with the alcohol-water mixed solvent and sodium p-aminobenzene sulfonate, and treating under 400-500 W ultrasonic power for 30-45 minutes to obtain a dissolved sodium p-aminobenzene sulfonate graphite dispersion, (d) adding nano-catalyst to the dispersion, conveying to a grinder for repeated grinding, stirring for 30-45 minutes, centrifuging at 8000-10000 rpm for 10-15 minutes, and extracting the precipitate to obtain graphene nanomaterial, (e) adding graphene nanomaterial and wear-resistant ceramic powder to a stirred tank, turning on the stirred tank, stirring, sealing at a speed of 180 rpm for 20-30 minutes, and leaving still for 2-3 hours to obtain a powder mixture, (f) adding the resin polymer to a two-roll mill, uniformly mixing, adding the powder mixture obtained in the step (b) during the mixing process, and uniformly mixing to obtain a resin polymer prepolymer, and (g) adding the prepolymer to a stirring tank, adding carbon fiber, diamond powder, quartz glass fiber, modified bauxite, aluminum alloy powder, modified calcium carbonate powder and zirconia to a stirring axe, turning on the stirring tank, stirring for 5-10 minutes, increasing the temperature in the stirring tank to 60-80 degrees C, treating at 300-500 W ultrasonic power for 1-2 hours, stirring at high speed for 30-40 minutes, adding to a sealable container, sealing, leaving still at room temperature for 5-8 hours, using an extruder for granulating or using an crusher for crushing, and granulating to obtain the nanomaterial.