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Detonation Performance of Two DNAN Based Aluminized Explosives
YANG Yang,DUAN Zhuo‑ping,ZHANG Lian‑sheng,HUANG Feng‑lei
(State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China)
Abstract:To study the detonation performance of 2,4‑dinitroanisole(DNAN)based aluminized explosives,the detonating ex‑
plosive / LiF interface particle velocity and free surface velocity imparted to thin metal plates for aluminized explosives RBOL ‑2
(DNAN/HMX/Al/additives)and RMOE‑2(DNAN/HMX/NTO/Al/additives)were measured by a laser displacement interferome‑
ter system for any reflector(DISAR). The detonation wave parameters were obtained for these two explosives according to the in‑
terfacial particle velocity histories. The reaction zone lengths are(1.073±0.111)mm and(1.559±0.094)mm,the CJ pressures
are(25.42±0.44)GPa and(20.99±0.15)GPa,and the Von‑Neumann pressures are 27.69 GPa and 41.27 GPa for RBOL‑2 and
RMOE ‑ 2,respectively. The velocity histories of the metal plate show that the work capacity of RBOL ‑ 2 is better than that of
RMOE‑2. In addition,under the experimental conditions,the steady detonation status obtained by aluminized explosive is relat‑
ed to the initiation loading conditions and the loading pressure affects the work capacity of aluminized explosives. The greater
the loading pressure,the stronger the work capacity. Under high loading pressure(21 GPa),the higher the loading pressure,
the more aluminum particles react in the detonation reaction zone,and the stronger the detonation state of the aluminized explo‑
sive.
Key words:laser interferometry;2,4‑dinitroanisole (DNAN) based aluminized explosive;detonation reaction zone;work
capacity
CLC number:TJ55;O381 Document code:A DOI:10.11943/CJEM2018327
(责编:王艳秀)
www.energetic-materials.org.cn
Chinese Journal of Energetic Materials,Vol.27, No.8, 2019(679-684) 含能材料