孔隙度对PBX炸药冲击起爆影响的实验研究

To investigate the influence of the porosity (charge density) on the shock initiation and detonation of polymer bonded explosives (PBXes), a one-dimensional Lagrangian experimental testing system is adopted to measure the pressure-time histories at different Lagrangian locations of PBXC03 (87% HMX, 7% TATB, 6% binder by weight) with three different porosities (or charge densities), in which, an explosive plane-wave lens is used to generate a high-pressure planar detonation wave loading, and the Manganin piezoresistive pressure gauge measurement technique and the attenuation technique by both air-gap and Al-gap are used. The experimental results show that the detonation grows the fastest in the explosive with a moderate porosity. This work provides more detailed experimental data for the further development of mesoscopic reaction rate models for shock initiation of heterogeneous explosives.