▎ 摘　　要

NOVELTY - Preparing heat-resistant thermal conductive polyurethane comprises: e.g. (i) using the graphene oxide and adding polyethylene adipate, ultrasonically dispersing, drying, adjusting the temperature, adding 2,4-toluene diisocyanate and dibutyl tin, keep stirring, heating, keep stirring, purifiying, vacuum defoaming, and heating; (ii) dissolving, heating; heating the intermediate material, ethylene glycol monomethyl ether, mixing, stirring, refluxing, filtering, pouring, adjusting the pH, and purifiying; (iii) adding the chain extender to the prepolymer, mixing, and vulcanizing. USE - The method is useful for preparing heat-resistant thermal conductive polyurethane (claimed). ADVANTAGE - The heat-resistant thermal conductive polyurethane has good heat resistance, fast heat conduction and high mechanical strength. DETAILED DESCRIPTION - Preparing heat-resistant thermal conductive polyurethane comprises: (i) using the graphene oxide and adding 1000 polyethylene adipate, ultrasonically dispersing uniformly, drying, adjusting the temperature, adding 2,4-toluene diisocyanate and dibutyl tin, keep stirring, heating, keep stirring, purifiying, vacuum defoaming, and heating to obtain prepolymer; (ii) dissolving 2-bromo-5-nitro-trifluoro methylbenzene in N, N-dimethylformamide, potassium carbonate, hydroquinone dihydroxyethyl ether, heating, keep stirring to obtain an intermediate material; heating the intermediate material, ethylene glycol monomethyl ether, activated carbon, ferric chloride hexahydrate, mixing, stirring to dissolve the intermediate material, aqueous solution of hydrazine hydrate, refluxing, filtering, pouring the filtrate into aqueous hydrochloric acid, hydroxide aqueous sodium adjusting the pH, and purifiying to obtain the molten chain extender; (iii) adding the chain extender to the prepolymer, mixing, and vulcanizing to obtain heat resistant thermal conductivity polyurethane material.