两种塑料粘结炸药的Steven试验及撞击感度研究

Steven Test and Impact Sensitivity for Two Explosives

采用2kg钢质弹丸对PBX2、PBX1炸药进行了Steven试验,试验中采用锰铜压力计测试了样品中的压力变化过程,通过高速录像照片估算了点火反应的延迟时间,通过冲击波超压传感器测量了炸药的反应超压。结果表明PBX1炸药和PBX2炸药的点火反应阈值速度分别约为35.0～35.5m·s-1、40～46m·s-1,在同样撞击速度下PBX1炸药的点火延迟时间明显小于PBX2炸药,这表明PBX2炸药较PBX1炸药钝感。

Steven tests for two explosives PBX-2 and PBX-1 were made by using a steel projectile of 2.0 kg. The pressure change was measured by pressure gauges,and ignition delay time was estimated and analyzed by high-speed motion pictures. The reaction overpressure of two explosives were gained by blast pressure gauges. The results show that the threshold velocities of ignition for explosives PBX-1 and PBX-2 range from about 35.0 -35.5 m · s^-1 and ,40 -46 m · s^-1 respectively,and the ignition delay time of PBX-1 explosive is smaller than that of PBX-2 explosive remarkably,which demonstrates that PBX-1 explosive is more sensitive than PBX-2 explosive.