CHINESE JOURNAL OF ENERGETIC MATERIALS
+Advanced Search

Thermal Expansion Characteristic of a New Type High Energy Explosive ICM-101
Author:
Affiliation:

1.Institute of Chemical Materials, CAEP, Mianyang 621999, China;2.State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry,College of Chemistry,Beijing University of Chemical Technology, Beijing 100029, China

Fund Project:

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
    Abstract:

    The thermal expansion characteristic of explosives under thermal stimulation affects the application of explosives. The thermal expansion characteristic of [2,2′-bi(1,3,4-oxadiazole)]-5,5′-dinitramide (ICM-101) was studied by using in-situ X-ray powder diffraction, and the thermal expansion coefficient of ICM-101 was obtaind based on Rietveld structure refinement. Results show that there is reversible anisotropic under the high temperature expansion process of ICM-101. In the temperature range of 30-170 ℃, the thermal expansion coefficients of the unit cell parameters a, b, c axis and volume V are 9.19×10-5-1, -9.22×10-6-1, 5.21×10-5-1 and 13.8×10-5-1, respectively. The b-axis exhibits negative expansion characteristics. The unit cell stacking structure of ICM-101 at different temperatures and its correlation with thermal expansion characteristics were studied via the method of molecular spectroscopy technology combined with theoretical calculations. Results show that the compression deformation of the four-membered ring structures of ICM-101 molecules under thermal stimulation is an important reason for the linear negative expansion of the b-axis . Compared with other explosive crystals, the influence of unit cell packing on the thermal stability of explosive crystal structures were analyzed. The thermal expansion anisotropy of explosive crystals with strong hydrogen bonding layered stacked structure is more obvious. When the relative angle between molecules is greater than 100°, the intra-layer hydrogen bonding network affects the interlayer interaction. On the contrary, it will affect the a, b, and c axis directions and limit its thermal expansion.

    Reference
    Related
    Cited by
Article Metrics
  • PDF:
  • HTML:
  • Abstract:
  • Cited by:
Get Citation

陶玉婷,徐金江,张浩斌,等.新型高能量密度炸药ICM-101的热膨胀特性[J].含能材料,2021,29(7):641-649.
TAO Yu-ting, XU Jin-jiang, ZHANG Hao-bin, et al. Thermal Expansion Characteristic of a New Type High Energy Explosive ICM-101[J]. Chinese Journal of Energetic Materials,2021,29(7):641-649.

Cope
History
  • Received:February 09,2021
  • Revised:May 13,2021
  • Adopted:April 08,2021
  • Online: May 08,2021
  • Published: July 25,2021