文章基本信息

标题：Preparation and characterization of HMX/EVA/hBNNSs micro-composites with improved thermal stability and reduced sensitivity
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作者：Yue Yang ; Xiao-dong Li ; Yan-tao Sun 等
期刊名称：Defence Technology
印刷版ISSN：2214-9147
出版年度：2021
卷号：17
期号：2
页码：650-656
DOI：10.1016/j.dt.2020.09.002
出版社：Elsevier B.V.
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.
关键词：Energetic materials ; 2D (two dimensional) materials ; HBNNSs (hexagonal boron nitride nanosheets) ; HMX (1;3;5;7-Tetranitro-1;3;5;7-tetrazocane) ; Thermal stability ; Mechanical sensitivity