▎ 摘　　要

NOVELTY - Preparing heat-resistant functionalized graphene-modified acrylic resin material involves adding graphene oxide to the distilled water solvent, uniformly dispersing the graphene oxide solution by ultrasonic dispersion, adding sodium hydroxide and chloroacetic acid to the solution, where the mass ratio of graphene oxide, sodium hydroxide and chloroacetic acid 10:60:500, ultrasonic dispersion is carried out for 2-5 hours, subjecting hot filtration to remove impurities and drying to prepare carboxylated graphene oxide, adding carboxylated graphene to the toluene solution in a nitrogen atmosphere, ultrasonically dispersing for 0.5-1.5 hours, adding 4,4'-methylene bis(phenylisocyanate) at 50-70 degrees C, using dibutyltin dilaurate as a catalyst, stirring the reaction for 8-12 hour. USE - Method for preparing heat-resistant functionalized graphene-modified acrylic resin material. ADVANTAGE - The method enables to prepare heat-resistant functionalized graphene-modified acrylic resin material has very good heat-conducting performance and mechanical property, excellent mechanical property, improves the stability of the high molecular chain structure, so as to further improve the thermal stability of the material. DETAILED DESCRIPTION - Preparing heat-resistant functionalized graphene-modified acrylic resin material involves adding graphene oxide to the distilled water solvent, uniformly dispersing the graphene oxide solution by ultrasonic dispersion, adding sodium hydroxide and chloroacetic acid to the solution, where the mass ratio of graphene oxide, sodium hydroxide and chloroacetic acid 10:60:500, ultrasonic dispersion is carried out for 2-5 hours, subjecting hot filtration to remove impurities and drying to prepare carboxylated graphene oxide, adding carboxylated graphene to the toluene solution in a nitrogen atmosphere, ultrasonically dispersing for 0.5-1.5 hours, adding 4,4'-methylene bis(phenylisocyanate) at 50-70 degrees C, using dibutyltin dilaurate as a catalyst, stirring the reaction for 8-12 hours, washing the product with toluene solution, suction filtration and drying to prepare isocyanated functionalized graphene, adding methyl methacrylate, butyl methacrylate, acrylic acid and hydroxyethyl acrylate to the toluene solution, using azobisisobutyronitrile as initiator, and reacting at 90-110 degrees C for 4-7 hours, filtering and drying to obtain hydroxyl-containing acrylic resin. The acrylic resin and isocyanated functionalized graphene are added to 1,4-dioxane solvent, stirred and refluxed in an oil bath at 50-70 degrees C, reacted for 2-8 hours to obtain product.