▎ 摘　　要

NOVELTY - Preparing high-performance graphene nanometer thermally conductive paint comprises e.g. (1) ball-milling the diluent, nano-oxide, and graphene to obtain a nano-suspension; (2) weighing methyl methacrylate and other copolymerizable monomers to obtain a mixed monomer, adding nanosuspension, adding reaction additive, stirring obtained mixture to obtain in-situ polymerization precursor solution; and (3) under nitrogen protection, adding in-situ polymerization precursor solution obtained in step (2) into the reaction kettle (flask), controlling the stirring speed of stirring paddle, maintaining temperature of reaction system by heating in oil bath, dropwise adding remaining in-situ polymerization precursor solution, after dropwise addition, heating the reaction system and keeping the temperature, removing the oil bath device, naturally cooling, pouring out the reaction product in four-necked flask, adding pH value adjuster, and stirring to obtain nano-filler-acrylic resin. USE - The thermally conductive paint is useful for electronic component and metal. ADVANTAGE - The method: can improves dispersion uniformity of nano-fillers e.g. graphene in acrylic-epoxy network in principle, and improves the thermal conductivity, hardness, corrosion resistance and impact resistance of the paint. DETAILED DESCRIPTION - Preparing high-performance graphene nanometer thermally conductive paint comprises (1) ball-milling the diluent, nano-oxide, and graphene in a weight ratio of 40-100:1:1 to obtain a nano-suspension; (2) weighing methyl methacrylate and other copolymerizable monomers in weight ratio of 2-3:1 to obtain a mixed monomer, adding nanosuspension (80-120% of the total weight of the mixed monomer), adding reaction additive (1-3% of the total weight of the mixed monomer), stirring obtained mixture for 10-15 minutes to obtain in-situ polymerization precursor solution; (3) under nitrogen protection, adding 10-30 wt.% in-situ polymerization precursor solution obtained in step (2) into the reaction kettle (flask), controlling the stirring speed of stirring paddle to be 180-200 revolutions/minute, maintaining temperature of reaction system at 50-85degreesC by heating in oil bath, dropwise adding remaining 70-90 wt.% in-situ polymerization precursor solution within 1-8 hours reaction time, after dropwise addition, heating the reaction system to 90degreesC and keeping the temperature for 0.5-2 hours, removing the oil bath device, naturally cooling to 30-50degrees Celsius, pouring out the reaction product in four-necked flask, adding pH value adjuster (3-6 wt.% total weight of the monomers in step (2)), and stirring for 5-10 minutes to obtain nano-filler-acrylic resin; and (4) using the nano-filler-acrylic resin obtained in step (3) as main raw material, preparing high-performance graphene nano-thermal conductive coating by ball milling, amount of nanofiller-acrylic resin is 20-35 pts. wt., diluent is 20-50 pts. wt., epoxy resin is 3-15 pts. wt., and auxiliary agent is 10.3-20.5 pts. wt..