▎ 摘　　要

NOVELTY - Phosphating crosslinked graphene flame-retardant composite material comprises 1-2 pts. wt. dodecyl mercaptan, 0.1-0.2 pt. wt. diisocyanate, 6-7 pts. wt. ammonium polyphosphate, 2-3 pts. wt. phosphorus oxychloride, 6-7 pts. wt. phenol, 18-25 pts. wt. graphene, 1-2 pts. wt. trimethylolpropane, 17-20 pts. wt. 2,4-dimethylphenol, 0.03-0.1 pt. wt. aluminum trichloride, 0.4-1 pt. wt. triallyl isocyanurate and 110-120 pts. wt. polyvinyl chloride. USE - Phosphating crosslinked graphene flame-retardant composite material. ADVANTAGE - The material has good flame retardant property, organized graphene oxide, improved dispersibility and strength stability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of phosphating crosslinked graphene flame-retardant composite material comprising: (A) adding 40-51 times ammonium polyphosphate into 8-10% hydrogen peroxide aqueous solution, stirring, adding dodecyl mercaptan, and heating at 70-75 degrees C for 20-30 minutes to obtain hydroxyl flame retardant dispersion; (B) adding phosphorus oxychloride with 10-17 times deionized water, stirring, adding diisocyanate, and stirring at 50-60 degrees C for 20-30 minutes to obtain phosphating dispersion; (C) heating and melting phenol, dropping obtained 60-70% hydroxyl flame retardant dispersion at 30-35 degrees C for 10-20 minutes, adding 4-5% sodium bicarbonate aqueous solution, adjusting pH into 7-8, and heating at 70-76 degrees C for 20-30 minutes to obtain flame retardant phosphating ester solution; (D) adding graphene oxide with 40-50 times anhydrous ethanol and trimethylolpropane, and ultrasonically reacting at 60-70 degrees C for 10-16 minutes to obtain graphene alcohol dispersion; (E) mixing and stirring 2,4-dimethylphenol and aluminum chloride, heating at 110-116 degrees C, adding residual phosphorization liquid, reducing temperature at 90-95 degrees C, stirring reaction for 5-6 hours, and cooling at 40-50 degrees C for 30-40 minutes to obtain acylated phosphoric acid solution; (F) mixing acylated phosphoric acid solution and graphene alcohol dispersion into reaction kettle, dropping 96-98% sulfuric acid solution, heating reaction kettle at 210-230 degrees C for 1-2 hours, mixing obtained mixture with flame-retardant phosphating ester solution and triallyl isocyanurate, reducing temperature at 70-75 degrees C and stirring for 3-4 hours to obtain esterified graphene; and (G) adding and stirring esterified graphene and polyvinyl chloride into extruder, melting, extruding, cooling and granulating to obtain product.