▎ 摘　　要

NOVELTY - Method for preparing polyphosphate grafted graphene flame retardant modified nylon material involves (a) using triethylamine as a promoter, reacting phenylphosphoryl dichloride and p-aminophenol, (b) placing 1,3,5-triazine-tricarboxylic acid in N,N-dimethylformamide solvent, adding oxalyl chloride, and carrying out acyl chloride treatment, (c) adding chloroform solvent and hydroxylated graphene to the reaction flask, distilling off the solvent under reduced pressure, and washing the precipitate with chloroform and ethanol, (d) in the reaction flask, adding N,N-dimethylformamide solvent to carry out solvent, centrifuging to remove solvent, using N,N-dimethylformamide solvent, performing trichloromethane and ethanol washing the product, and (e) melt-blending the nylon 6 fiber and triazine-based polyphosphate-modified graphene, and subjecting to high-speed melt spinning at 260-300degrees Celsius to obtain the product. USE - The method is used for preparing polyphosphate grafted graphene flame retardant modified nylon material, which is used in nylon bags and packaging tapes. ADVANTAGE - The method inhibits the combustion process, thus enhancing the flame retardant properties. DETAILED DESCRIPTION - Method for preparing polyphosphate grafted graphene flame retardant modified nylon material involves (a) using triethylamine as a promoter, reacting phenylphosphoryl dichloride and p-aminophenol to obtain bis(4-aminophenyl)phenylphosphonate, (b) placing 1,3,5-triazine-tricarboxylic acid in N,N-dimethylformamide solvent, adding oxalyl chloride, and carrying out acyl chloride treatment to obtain 1,3,5-triazine-triacyl chloride, (c) adding chloroform solvent and hydroxylated graphene to the reaction flask, adding 1,3,5-triazine-triacyl chloride and reaction accelerator pyridine after ultrasonic dispersion to carry out esterification reaction, distilling off the solvent under reduced pressure, and washing the precipitate with chloroform and ethanol to obtain acyl triazine chloride modified graphene, (d) in the reaction flask, adding chloroform solvent, acyl chloride triazine modified graphene and acid dressing agent triethylamine, after ultrasonication is uniform, adding 1,3,5-triazine-triacyl chloride and bis(4-aminophenyl)phenylphosphonate to carry out in-situ hyperbranched polymerization, adding N,N-dimethylformamide solvent to carry out solvent, centrifuging to remove solvent, using N,N-dimethylformamide solvent, performing trichloromethane and ethanol washing the product to obtain triazine-based polyphosphate-modified graphene, and (e) melt-blending the nylon 6 fiber and triazine-based polyphosphate-modified graphene, and subjecting to high-speed melt spinning at 260-300degrees Celsius to obtain the product.