To construct effective interfacial interactions between graphene-based flame retardants and epoxy resin (EP) matrixes, reactive cyclophosphazene was chemically synthesized with amino groups and grafted on graphene oxide (GO) to prepare a flame-retardant fGO nanosheets for EP nanocomposites. The obtained fGO presented good compatibility and endowed the composites with improved thermal stability and dynamic mechanical properties. With a low content of 1.0 wt.% fGO added, the EP nanocomposites exhibited distinctly lowered the peak of heat release rate, total heat release, and total smoke production by 49.0%, 21.1%, and 51.9%. Compact char residue layers and suppressed volatile products indicated the formation of protective char structures derived from fGO nanofillers. The flame-retardant mechanisms were investigated and ascribed to the effects in condensed and gas phases from phosphazene modified graphene components.

为了构建石墨烯基阻燃剂与环氧树脂（EP）基质之间的有效界面相互作用，将反应性环磷腈与氨基进行化学合成，并将其接枝在氧化石墨烯（GO）上，以制备用于EP纳米复合材料的阻燃性fGO纳米片。所获得的fGO具有良好的相容性，并赋予复合材料改善的热稳定性和动态力学性能。通过添加低含量的1.0 wt。％fGO，EP纳米复合材料的散热速率，总散热量和总烟雾产生的峰值显着降低了49.0％，21.1％和51.9％。紧密的炭渣层和受抑制的挥发性产物表明形成了源自fGO纳米填料的保护性炭结构。