Effects of Desensitizers on Phase Transitions, Thermal Behavior, and Sensitivity of ε-CL-20

Jing yuan Zhang, Xue yong Guo*, Qing jie Jiao, Hong lei Zhang, Hang Li

*Corresponding author for this work

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Abstract

The phase transitions of ε-CL-20 coated with desensitizers [paraffin wax (PW), microcrystal wax (MW), graphite, molybdenum disulfide, tungsten disulfide, and graphite fluoride] were investigated using powder X-ray diffraction (PXRD) and differential scanning calorimetry (DSC). The thermal behavior of ε-CL-20 and ε-CL-20 coated with desensitizers was analyzed, and the compatibility of ε-CL-20 with the desensitizers was assessed using vacuum stability tests. The characteristics of several desensitizers were measured, and their effects on the friction and impact sensitivity of coarse and fine ε-CL-20 crystals were analyzed. The results indicate that graphite decreased the critical temperature of phase transition. The phase transition of DSC results is consistent with the PXRD data. ε-CL-20 was compatible with all the desensitizers studied. Molybdenum disulfide markedly lowered the impact sensitivity; PW and MW lowered the friction sensitivity of ε-CL-20. The molybdenum disulfide/PW compound system reduced both the friction and impact sensitivity of ε-CL-20.

Original languageEnglish
Pages (from-to)111-120
Number of pages10
JournalJournal of Energetic Materials
Volume36
Issue number1
DOIs
Publication statusPublished - 2 Jan 2018

Keywords

  • CL-20
  • desensitizers
  • phase transition
  • sensitivity

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Zhang, J. Y., Guo, X. Y., Jiao, Q. J., Zhang, H. L., & Li, H. (2018). Effects of Desensitizers on Phase Transitions, Thermal Behavior, and Sensitivity of ε-CL-20. Journal of Energetic Materials, 36(1), 111-120. https://doi.org/10.1080/07370652.2017.1326188