Peacock flaunting tail inspired-multiple interactions between black phosphorene and glass powder with safety shield fire of epoxy resin

Black phosphorene (BP) has caused widespread attention for excellent dimension effects and thermal stability. Herein, glass powder (GP), a waste from ceramic production, is blended with black phosphorene (GBP) for reducing the fire hazard of epoxy resin (EP) matrix. Density functional theory (DFT) reveals that the adsorption energy between BP and SiO2 and Al2O3 are −3.55 and −4.27 eV, respectively, indicating a strong interaction between BP and GP. The results of cone calorimetry test (CCT) indicate that the flame retardant performance of EP can tremendously promote through adding 1.5 wt% GBP nanosheets, for instance, the peak heat release rate (pHRR) and the total heat release (THR) are decreased by 27.76 % and 31.42 %, respectively. Epoxy composites with only 1.5 wt% GBP nanosheets can reach UL-94 V-0 rating level with a limit oxygen index (LOI) of 29.7. These positive results are attributed to the collaborative function of physical obstacle, free radicals capturing and catalytic char formation between BP and GP components. In addition, the thermal conductivity decreased by 8.91 %, and the tensile strength increased by 39.99 % with the 1.5 wt% addition amount of GBP nanosheets. This work has a promising foreground for exploiting the resue of waste to satisfy the requirement of sustainable practical applications.