▎ 摘　　要

NOVELTY - Preparation of graphite heat dissipation macromolecualr material involves (S1) preparing raw materials, putting 110-120 concentrated sulfuric acid into a flask, (S2) heating, stirring, transferring the flask obtained in the step (S1) into a constant-temperature water bath kettle, (S3) filtering, removing the flask out of an oil bath, adding 350 mL warm water into the flask, diluting the liquid in the flask, where the fluid in the flask is brown yellow turbid liquid, stirring the brown yellow turbid liquid by using stirring equipment, (S4) reducing graphene, putting 100 mg graphene oxide into a 500 mL flask, adding 250 mL distilled water into the flask, (S5) adding methyl vinyl silicone rubber, adding 100 g graphene obtained in the step (S4) into a flask, and (S6) mixing carbon silicide, and continuously adding the carbon silicide when stirring equipment is used in the step (S5). USE - Preparation of graphite heat dissipation macromolecular material. ADVANTAGE - The method enables preparation of graphite heat dissipation macromolecular material with high heat dissipation effect. DETAILED DESCRIPTION - Preparation of graphite heat dissipation macromolecular material involves (S1) preparing raw materials, putting 110-120 concentrated sulfuric acid into a flask, placing the flask in ice water to cool to 5℃, stirring the concentrated sulfuric acid in the flask by a stirring device, slowly adding 4-6 g natural flake graphite powder in the stirring process, fully mixing the natural flake graphite powder in the concentrated sulfuric acid, then adding 13-17 g potassium permanganate and 2-3 g sodium nitrate, and stirring for 3-4 hours by using the stirring device at the temperature of 10-15℃, (S2) heating, stirring, transferring the flask obtained in the step (S1) into a constant-temperature water bath kettle at 35℃, keeping the temperature of the flask constant through the constant-temperature water bath kettle, stirring the flask while keeping the temperature constant, slowly adding 230 mL distilled water when the interior of the flask is gray brown thick liquid, raising the temperature to 90-100℃ by controlling the water adding speed, reducing the temperature to 85℃, after adding water, quickly transferring a reactant into an oil bath heating system, keeping mechanical stirring, keeping the temperature at 90℃ for 1 hour, and continuously stirring, (S3) filtering, removing the flask out of an oil bath, adding 350 mL warm water into the flask, diluting the liquid in the flask, where the fluid in the flask is brown yellow turbid liquid, stirring the brown yellow turbid liquid by using stirring equipment, adding 15 mL hydrogen peroxide, stirring the mixture until the liquid is bright yellow and uniform, filtering the mixture while the liquid is hot, fully washing a product on a filter cake by using hydrochloric acid with the concentration of 5% until sulfate ions in the product of the filter cake are removed, scraping the product graphite oxide from filter paper, performing vacuum drying in an oven for 48 hours, adding a proper amount of distilled water into the prepared graphite oxide, ultrasonically dispersing in an ultrasonic cleaner for 2 hours to prepare graphene oxide, and drying after filtering water, (S4) reducing graphene, putting 100 mg graphene oxide into a 500 mL flask, adding 250 mL distilled water into the flask, adding 50 mL hydrated volume solution into the flask for mixing, then carrying out reduction reaction on the flask in an oil bath at 100℃, condensing and refluxing for 24 hours, then carrying out vacuum filtration on a product, washing the product on a filter cake by using distilled water and methanol, finally scraping off the graphene on filter paper, and carrying out forced air drying for 48 hours to obtain a sample for later use, (S5) adding methyl vinyl silicone rubber, adding 100 g graphene obtained in the step (S4) into a flask, adding 250 g methyl vinyl silicone rubber, heating to 80℃, and fully stirring by using stirring equipment, and (S6) mixing carbon silicide, and continuously adding the carbon silicide when stirring equipment is used in the step (S5). An INDEPENDENT CLAIM is included for the preparation method of the high molecular material for graphite.