摘要：Hexagonal boron nitride nanosheets (HBNNSs) have huge potential in the field of coating materials owing to their remarkable chemical stability, mechanical strength and thermal conductivity. Thin-layer hBNNSs were obtained by a liquid-phase exfoliation of h-BN powders and incorporated into EVA coatings for improving the safety performance of 1,3,5,7-tetranitro-1,3,5,7-tetrazocane (HMX). HBNNSs and ethylene-vinyl acetate copolymer (EVA) were introduced to HMX by a solvent-slurry process. For comparison, the HMX/EVA and HMX/EVA/graphene (HMX/EVA/G) composites were also prepared by a similar process. The morphology, crystal form, surface element distribution, thermal decomposition property and impact sensitivity of HMX/EVA/hBNNSs composites were contrastively investigated. Results showed that as prepared HMX/EVA/hBNNSs composites were well coated with hBNNSs and EVA, and exhibited better thermal stability and lower impact sensitivity than that of HMX/EVA and HMX/EVA/G composites, suggesting superior performance of desensitization of hBNNSs in explosives.
