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Title: Laboratory-scale Investigation of the Influence of Ageing on the Performance and Sensitivity of an Explosive Containing ϵ-CL-20

Journal Article · · Propellants, Explosives, Pyrotechnics
 [1];  [1];  [2];  [2]
  1. US Army Research Lab., Aberdeen Proving Ground, MD (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
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Here, the performance and sensitivity of aged composite explosives based on the epsilon polymorph of hexanitrohexaazaisowurtzitane (ϵ–CL–20) have been evaluated with the laser–induced air shock from energetic materials (LASEM) technique using only milligram quantities of material. The LASEM results demonstrated reduced explosive performance (i.e., lower estimated detonation velocities) and higher sensitivity to ignition with increasing ageing. Chemical analysis of the explosive formulation subjected to ambient and accelerated aging was conducted to help understand the LASEM results. The Fourier Transform Infrared (FTIR) spectra revealed no evidence for conversion to lower–energy polymorphs. Based on the desorption gas chromatography/mass spectrometry (D–GC/MS) results, the observed decrease in performance and increase in sensitivity for the explosive powder aged at 100 °C (relative to ambient and 70 °C aging) have been attributed to changes related to solvent inclusions in the molding powders.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1464197
Report Number(s):
SAND-2018-8194J; 666398
Journal Information:
Propellants, Explosives, Pyrotechnics, Vol. 43, Issue 6; ISSN 0721-3115
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

Figures / Tables (22)

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Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
CL-20
detonation performance
aged energetic materials
laser-induced plasma
laser-induced shock velocity
deflagration