Enhancing the flame retardancy of polyamide 6 by guanidine sulfamate‐modified carbon nanoparticles: Carbon nanotubes versus graphite oxide

Different carbon nanoparticles including multi‐wall carbon nanotubes (MWNT) and graphite oxide (GO) were used to prepare polyamide 6 (PA6) composites with enhanced flame retardancy by grafting guanidine sulfamate (GAS) on nanoparticles. The modified nanoparticles were compounded with PA6 by melt blending, and the flame retardancy of PA6 was evaluated by limiting oxygen index (LOI), vertical burning (UL94), and cone calorimetry tests. The results...