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%.
Original language | English (US) |
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Article number | 490005 |
Journal | AIP Conference Proceedings |
Volume | 3066 |
Issue number | 1 |
DOIs | |
State | Published - Dec 9 2024 |
Event | 23rd Biennial Conference of the APS Topical Group on Shock Compression of Condensed Matter, SCCM 2023 - Hybrid, Chicago, United States Duration: Jun 19 2023 → Jun 23 2023 |
ASJC Scopus subject areas
- General Physics and Astronomy