To understand the effect of accelerated aging on impact safety of explosive subassembly, the accelerated aging test of temperature 65°C , time 180 d and 365 d was done. The simulating drop test method of explosive subassembly with φ100 mm were established. For the novel and accelerated aging PBX-6 explosive subassembly,the simulating drop test with inside and outside shell were done. The reaction grades were estimated according to the reaction over pressure measured by blast pressure gauges, the ignition process of explosive subassembly at different drop velocity shooted by high-speed motion pictures and combined to photographs of experimental scrap. The results showed that for the explosive subassembly of novel or same accelerated aging time, the reaction over pressure and the deflagrate reaction grade were much bigger with drop height increasement. For the explosive subassembly of novel and accelerated aging, the reaction over pressure and the deflagrate reaction grade of accelerated aging explosive subassembly were bigger, the impact safety was decreased at same drop height.%为了解加速老化对炸药件撞击安全性的影响,开展了PBX-6炸药件在温度65℃、时间180d和365d的加速老化试验,建立了Φ100 mm炸药件模拟跌落试验方法.对加速老化前后的PBX-6炸药件进行了带内外壳约束的模拟跌落试验,根据压力传感器测量炸药反应产生的冲击波超压,用高速相机拍摄炸药件不同速度的跌落撞靶过程,结合收集的实验残余物形貌来评定反应等级.结果表明,对于未老化或加速老化时间相同的试样,跌落高度越高,爆炸冲击波超压和爆燃反应程度越大.对于未老化和加速老化试样,跌落高度相同时,老化试样的爆炸冲击波超压和爆燃反应程度较大,撞击安全性降低.
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