Abstract
Hydroxy-terminated polybutadiene (HTPB)/CL-20 castable explosives plasticized with liquid paraffin were processed successfully by a cast-curing method. The compatibility of liquid paraffin with CL-20, influence of liquid paraffin on CL-20 phase transition, and viscosity of the cast mixture were tested and analyzed. The thermal decomposition characteristics, thermal stability, mechanical sensitivity, and velocity of detonation (VOD) of the HTPB/CL-20 plastic-bonded explosives (PBXs) were also measured. The experimental results showed that liquid paraffin was well compatible with CL-20, and it did not have a distinct effect on the ε{lunate}- to γ-phase transition of CL-20. In addition, the casting mixture was free-flowing with sufficiently low viscosity. When the content of CL-20 is 90% by weight, the measured VOD reached 8,775 m/s (density of 1.78 g/cm3), and the PBXs exhibited moderate mechanical sensitivity and good thermal stability.
Original language | English |
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Pages (from-to) | 278-292 |
Number of pages | 15 |
Journal | Journal of Energetic Materials |
Volume | 32 |
Issue number | 4 |
DOIs | |
Publication status | Published - Oct 2014 |
Keywords
- CL-20
- castable PBXs
- detonation velocity
- mechanical sensitivity
- phase transition
- thermal stability
- viscosity