Layered zinc N, N’-piperazine (bismethylene phosphonate) functionalizing reduced graphene oxide (rGO@ZnPB) was prepared via in-situ method for the reduction of fire hazards of epoxy resin (EP), as well as the improvement on its thermal and mechanical properties. The results reveal a better flame retardancy of rGO@ZnPB than either rGO or ZnPB at the same loading level for EP. Remarkably, EP with 5.0 wt% rGO@ZnPB succeeds to UL-94 V-0 rating, as well as reductions by 38.7%, 30.5%, 33.7% and 33.8% in the peak heat release rate, total heat release, total smoke release and the peak CO production rate, respectively with respect to that of pure EP. Additionally, the thermogravimetric and differential scanning calorimeter results manifest that the thermal stabilities and glass transition temperatures of EP/rGO@ZnPB composites are improved to some extent. Moreover, the incorporation of a small quantity of rGO@ZnPB has some reinforcing effect on the mechanical properties of EP.

通过原位法制备了层状锌 N, N'-哌嗪（双亚甲基膦酸酯）功能化还原氧化石墨烯（rGO@ZnPB），以减少环氧树脂（EP）的火灾危险，并改善其热和机械性能。结果表明，在相同的 EP 负载水平下，rGO@ZnPB 的阻燃性优于 rGO 或 ZnPB。值得注意的是，含有 5.0 wt% rGO@ZnPB 的 EP 达到了 UL-94 V-0 等级，峰值放热率、总放热量、总烟量释放量分别降低了 38.7%、30.5%、33.7% 和 33.8%和峰值 CO 生产率，分别相对于纯 EP。此外，热重和差示扫描量热仪结果表明，EP/rGO@ZnPB 复合材料的热稳定性和玻璃化转变温度都有一定程度的提高。