Preparation and characterization of HMX/EVA/hBNNSs micro-composites with improved thermal stability and reduced sensitivity |
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| Authors: | Yue Yang Xiao-dong Li Yan-tao Sun Jian-an Tian Hui-min Liu Bi-dong Wu Jing-yu Wang |
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| Institution: | School of Environment and Safety Engineering,North University of China,Taiyuan,030051,Shanxi,China;School of Environment and Safety Engineering,North University of China,Taiyuan,030051,Shanxi,China;Shanxi Engineering Technology Research Center for Ultrafine Powder,North University of China,Taiyuan,030051,Shanxi,China |
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| Abstract: | 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 com-parison,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. |
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| Keywords: | Energetic materials 2D(two dimensional)materials HBNNSs(hexagonal boron nitride nanosheets) HMX(1 3 5 7-Tetranitro-1 7-tetrazocane) Thermal stability Mechanical sensitivity |
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