期刊
DEFENCE TECHNOLOGY
卷 25, 期 -, 页码 99-111出版社
KEAI PUBLISHING LTD
DOI: 10.1016/j.dt.2022.05.0092214-9147
关键词
Composite energetic materials; Copper azide; Carbonization; Template method; Core-shell composite; Electrostatic safety
This research successfully synthesized a Cu2O@HKUST-1 core-shell structure material and prepared a CuO@porous carbon (CuO@PC) composite material through gas-solid phase in-situ azidation reaction, resulting in the formation of a CuAz@PC composite energetic material. The composite material exhibits good electrostatic safety and high energy density.
Copper azide (CA), as a primary explosive with high energy density, has not been practically used so far because of its high electrostatic sensitivity. The Cu2O@HKUST-1 core-shell structure hybrid material was synthesized by the bottle around ship methodology in this research by regulating the dissolution rate of Cu2O and the generation rate of metal-organic framework (MOF) materials. Cu2O@HKUST-1 was carbonized to form a CuO@porous carbon (CuO@PC) composite material. CuO@PC was synthesized into a copper azide (CA) @PC composite energetic material through a gas-solid phase in-situ azidation reaction. CA is encapsulated in PC framework, which acts as a nanoscale Faraday cage, and its excellent electrical conductivity prevents electrostatic charges from accumulating on the energetic material's surface. The CA@PC composite energetic material has a CA content of 89.6%, and its electrostatic safety is nearly 30 times that of pure CA (1.47 mJ compared to 0.05 mJ). CA@PC delivers an outstanding balance of safety and energy density compared to similar materials.& COPY; 2022 China Ordnance Society. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/).
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