As alternative flame-retardant additive for polymers, reduced graphene oxide (RGO) is often limited by its poor interfacial compatibility with matrix. In this work, a new flame retardant, containing phosphorous, nitrogen and silicon elements was used to functionalize RGO. The wrapped flame retardant chains induced the improvement in the dispersion and compatibility of RGO in epoxy (EP) matrix. As a result, the mechanical, thermal and flame retardant properties of EP-based composites were significantly improved by adding flame retardant-functionalized RGO. The peak heat release rate, total heat release and total smoke production reduced by 34%, 14% and 30%, respectively, compared to neat resin. Based the char analyses, the enhancement in flame retardancy is attributed to the outstanding char layers with high strength and thermal stability resulting from the template effect of graphene, the charring effect of phosphorus and nitrogen elements and the enhancing effect of silicon element in grafted flame retardant chains.

作为聚合物的替代阻燃添加剂，还原型氧化石墨烯（RGO）通常由于与基质的不良界面相容性而受到限制。在这项工作中，包含磷，氮和硅元素的新型阻燃剂用于RGO的功能化。包裹的阻燃链引发了RGO在环氧树脂（EP）基质中的分散性和相容性的改善。结果，通过添加阻燃剂官能化的RGO，可显着改善EP基复合材料的机械，热和阻燃性能。与纯树脂相比，峰值放热率，总放热和总烟雾量分别减少了34％，14％和30％。根据字符分析，