Abstract
We studied shock-compressed plastic-bonded explosives (PBX) consisting of HMX (cyclotetramethylene-tetranitramine) with PDMS (poly-dimethylsiloxane) binder, where we varied the HMX weight percent (wt%) up to a maximum of 60 wt%. In this lower-concentration regime, HMX particle clustering causes the PBX structure to consist of HMX clusters and PDMS islands. Structural analysis by optical microscopy allowed us to compute a radial correlation function that gives the mean distance from an average HMX particle to the nearest polymer island. Short-duration 20 GPa shocks (4 ns) created hot spots, and time-resolved thermal emission was used to obtain the growth rate of the subsequent deflagration. The unreactive polymer islands limited the deflagration growth rate below 40 wt%.
Recommended Citation
D. D. Dlott et al., "Microstructured Microstructure: Effects Of Concentration Variations On Shock Initiation Of HMX-based Plastic Explosives," AIP Conference Proceedings, vol. 3066, no. 1, article no. 490005, AIP Publishing, Dec 2024.
The definitive version is available at https://doi.org/10.1063/12.0028528
Department(s)
Mechanical and Aerospace Engineering
Publication Status
Free Access
International Standard Serial Number (ISSN)
1551-7616; 0094-243X
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2026 AIP Publishing, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution 4.0 License.
Publication Date
09 Dec 2024
Comments
Air Force Office of Scientific Research, Grant FA9550-19-1-0027