▎ 摘　　要

NOVELTY - A nanoflame retardant preparation involves preparing acid functionalized graphene; and ultrasonic dispersing 1-3 g acid functionalized graphene in 100 ml tetrahydrofuran, pouring into 500 ml three-necked flask, filling with nitrogen, cooling in ice bath, adding 5-12 g triethylamine, stirring for 1-2 hours, adding 3-5 g hexachloro cyclotriphosphazene, stirring for 2 hours and reacting under nitrogen atmosphere for 5-8 hours with stirring to get acid/hexachloro cyclotriphosphazene functionalized graphene as nanoflame retardant. USE - Method for preparing nanoflame retardant used as additive for preparing base material such as natural rubber, ethylene propylene diene monomer, styrene-butadiene rubber and polypropylene plastic (claimed). ADVANTAGE - The flame retardant has improved dispersion, performance and compatibility, strong anti-surface migration, ideal retardant effect and high carbon capacity. DETAILED DESCRIPTION - A nanoflame retardant preparation comprises adding 1-2 g p-aminobenzoic acid and 0.2-0.4 g sodium hydroxide to reaction vessel, pouring 50-100 ml distilled water, reacting at 0-5 degrees C, adding slowly 0.5-1 g sodium nitrite and 5-10 ml 20% hydrochloric acid, stirring for 45-60 minutes, adding 0.2-0.5 g reduction graphene, stirring at 0-5 degrees C for 3-4 hours, adjusting pH value to 2-3, dialyzing 2-3 times with dialysis membrane and washing using organic solvent to neutralized to get acid functionalized graphene; and ultrasonic dispersing 1-3 g acid functionalized graphene in 100 ml tetrahydrofuran, pouring into 500 ml three-necked flask, filling with nitrogen, cooling in ice bath, adding 5-12 g triethylamine, stirring for 1-2 hours, adding 3-5 g hexachloro cyclotriphosphazene, stirring for 2 hours and reacting under nitrogen atmosphere for 5-8 hours with stirring to get acid/hexachloro cyclotriphosphazene functionalized graphene as nanoflame retardant.