▎ 摘　　要

NOVELTY - Preparing phenyl phosphine oxide synergistic graphene-polyhedral oligomeric silsesquioxane (POSS) flame-retardant polycarbonate material comprises e.g. adding graphene in the mixed solvent of sulfuric acid and nitric acid, carrying out ultrasonic at room temperature, adding N,N'-dicyclohexyl carbodiimide, uniformly mixing, refluxing and drying to obtain the terminal amino-amino-aminated graphene, refluxing and reacting to obtain the terminal chlorine-based diphenyl phosphine oxide, in the single-mouth flask, adding chlorine-terminated diphenyl phosphine oxide, N,N-dimethyl formamide, imino graphene-POSS, reacting to obtain phenyl phosphine oxide synergistic graphene-POSS flame retardant, adding phenyl phosphine oxide synergistic graphene-POSS flame retardant, polycarbonate, mixing, tableting and cooling, after drying granules, injecting standard sample of phenyl phosphine oxide synergistic graphene-POSS flame-retardant polycarbonate material on injection molding machine. USE - The method is useful for preparing phenyl phosphine oxide synergistic graphene-polyhedral oligomeric silsesquioxane flame-retardant polycarbonate material. ADVANTAGE - The method: improves the flame retardant performance of the polycarbonate material. DETAILED DESCRIPTION - Preparing phenyl phosphine oxide synergistic graphene-polyhedral oligomeric silsesquioxane (POSS) flame-retardant polycarbonate material comprises (i) adding 5-12 pts. wt. graphene in the mixed solvent of sulfuric acid and nitric acid, carrying out ultrasonic at room temperature, after diluting, filtering, washing by distilled water to neutral, vacuum drying to obtain carboxylated graphene, placing the carboxylated graphene in the flask containing 100-500 pts. wt. 3,3'-diamino-dipropylamine, ultrasonic at room temperature, adding N,N'-dicyclohexyl carbodiimide, uniformly mixing, refluxing under the oil bath and drying to obtain the terminal amino-amino-aminated graphene; (ii) providing the four-mouth flask equipped with a stirrer, a condensing pipe, a constant-pressure funnel, a thermometer, adding 7-20 pts. wt. epoxy POSS and acetone, stirring and preheating, adding 1.3-3 pts. wt. amino-terminated graphene, preserving temperature and reacting to obtain the imido graphene-POSS; (iii) providing the four-mouth flask equipped with a stirrer, a constant-pressure dropping funnel and a reflux condenser pipe, orderly adding 8-20 pts. wt. 6-chloro-1-hexanol, tetrahydrofuran and triethylamine, stirring at room temperature and adding 17-25 pts. wt. diphenyl phosphinyl chloride into the reaction system, after finishing dripping, refluxing and reacting to obtain the terminal chlorine-based diphenyl phosphine oxide, in the single-mouth flask, adding 8-20 pts. wt. chlorine-terminated diphenyl phosphine oxide, N,N-dimethyl formamide, 30-80 pts. wt. imino graphene-POSS, reacting to obtain phenyl phosphine oxide synergistic graphene-POSS flame retardant; and (iv) adding 1-12 pts. wt. phenyl phosphine oxide synergistic graphene-POSS flame retardant, 100 pts. wt. polycarbonate, mixing, mixing, tableting and cooling, after drying the granules, injecting standard sample of phenyl phosphine oxide synergistic graphene-POSS flame-retardant polycarbonate material on the injection molding machine.