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.

六方氮化硼纳米片（HBNNS）由于其卓越的化学稳定性，机械强度和导热性而在涂料领域具有巨大潜力。通过h-BN粉末的液相剥离获得薄层hBNNS，并将其掺入EVA涂料中以提高1,3,5,7-四硝基-1,3,5,7-四唑烷（HMX）的安全性能。通过溶剂浆化工艺将HBNNS和乙烯-乙酸乙烯酯共聚物（EVA）引入到HMX中。为了比较，还通过类似的方法制备了HMX / EVA和HMX / EVA /石墨烯（HMX / EVA / G）复合材料。对比研究了HMX / EVA / hBNNSs复合材料的形貌，晶形，表面元素分布，热分解性能和冲击敏感性。