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A novel ε-HNIW-based insensitive high explosive incorporated with reduced graphene oxide

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Abstract

A novel ε-HNIW-based explosive formula with low sensitive and high energy was developed by systematically researching the processes of recrystallization, granularity gradation, and coating of ε-HNIW and option of energetic deterrents. The grain size and morphology of HNIW crystals were modified by solvent/antisolvent recrystallization. The ε-HNIW particles were graded and coated by emulsion polymerization method with 551 glue. The binder reduced the mechanical sensitivity of ε-HNIW significantly and showed good compatibility with ε-HNIW, but also weakened the decomposition enthalpy. With the purpose of developing new energetic deterrents in insensitive high explosive formulations, novel carbon materials graphene oxide (GO) and reduced graphene oxide (rGO) were prepared and incorporated in plastic-bonded explosive (PBX) formulations. For comparison, the effects of conventional deterrent flake graphite were also involved. It turned out that the mechanical sensitivities of ε-HNIW/551 glue have all reduced to some extent with the incorporation of graphite, GO, and rGO. Flake graphite induced the PBX decompose earlier slightly and weaken the heat output. The addition of GO resulted in noticeable antedating decomposition of ε-HNIW/551 glue although remarkably increased the decomposition heat. The formula of ε-HNIW/551 glue/rGO provided a moderate growth in decomposition heat and best thermal stability. In slow cook-off tests, the formulas of ε-HNIW/551 glue and ε-HNIW/551 glue/rGO showed good thermal stability and might be qualified to apply safely under 200 °C. Comprehensively considering the mechanical sensitivity, thermals stability, energy performance, and practical application, ε-HNIW/551 glue/rGO is supposed to be an eligible insensitive high-energy PBX formula.

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Acknowledgements

The authors express heartful thanks to Shanxi North Guanlv Chemical Co., Ltd for providing us experimental facility in the “Insensitive Coating” section. We would also like to thank Jia Hongxuan and Liu Bo of this company for providing technical assistance.

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Authors and Affiliations

  1. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, China

    Lan Yu, Hui Ren, Xue-yong Guo, Xia-bing Jiang & Qing-jie Jiao

Authors
  1. Lan Yu
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  2. Hui Ren
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  3. Xue-yong Guo
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  4. Xia-bing Jiang
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  5. Qing-jie Jiao
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Correspondence to Hui Ren or Xue-yong Guo.

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Yu, L., Ren, H., Guo, Xy. et al. A novel ε-HNIW-based insensitive high explosive incorporated with reduced graphene oxide. J Therm Anal Calorim 117, 1187–1199 (2014). https://doi.org/10.1007/s10973-014-3928-7

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  • DOI: https://doi.org/10.1007/s10973-014-3928-7

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