▎ 摘　　要

NOVELTY - Preparation of graphene-coated inorganic filler composite resin includes weighing 5 g graphite and 5 g sodium nitrate, placing in flask, adding 150 mL sulfuric acid and 15 g potassium permanganate, reacting at 90 degrees C for 30 minutes, adding 200 mL deionized water, cooling to room temperature, adding 30 mL of 30% hydrogen peroxide and 700 mL deionized water, washing with acid twice, drying at 60 degrees C for 3 hours under vacuum to obtain graphene oxide, weighing 20 g nanowire-shaped inorganic filler, heating in oven at 130 degrees C for 2 hours, adding to 200 mL xylene, refluxing and adding surface modifier. USE - Method for preparing graphene-coated inorganic filler composite resin (claimed). ADVANTAGE - The inorganic filler composite resin is corrosion resistant and has good heat conductivity and wide application. DETAILED DESCRIPTION - Preparation of graphene-coated inorganic filler composite resin involves weighing 5 g graphite and 5 g sodium nitrate, placing in flask, adding 150 mL sulfuric acid and 15 g potassium permanganate, reacting at 90 degrees C for 30 minutes, adding 200 mL deionized water, cooling to room temperature, adding 30 mL of 30% hydrogen peroxide and 700 mL deionized water, washing with acid twice, drying at 60 degrees C for 3 hours under vacuum to obtain graphene oxide, weighing 20 g nanowire-shaped inorganic filler, heating in oven at 130 degrees C for 2 hours, adding to 200 mL xylene, refluxing, adding surface modifier, stirring at 150 degrees C for 4 hours, washing with ethanol, centrifuging, drying precipitate at 60 degrees C for 3 hours to obtain surface modified inorganic filler, taking 1 g graphene oxide, adding 200 mL ethanol, stirring for 1.5 hours, adding surface modified inorganic filler, stirring for 5 hours, annealing at 1000 degrees C for 1 hour under nitrogen gas, adding to reducing agent aqueous solution, heating at 90 degrees C for 3 hours to obtain oxidized graphene-coated inorganic filler, adding curing agent, placing in defoaming machine, stirring at 2000 revolutions/minute (rpm) and 1000 rpm for 15 minutes, molding, heating, hot pressing at 100 degrees C, curing for 3 hours, increasing temperature to 130 degrees C and curing for 2 hours.