TATB基和CL-20基PBX炸药爆轰波拐角性能的实验研究

Corner Performance of Detonation Waves in TATB-based and CL-20-based PBX Explosive

为研究TATB基和CL-20基PBX爆轰波的拐角性能,采用蘑菇(Mushroom)试验计算了含95%TATB基(PBX-Ⅰ)、CL-20基(PBX-Ⅱ)及添加了铝粉的CL-20基(PBX-Ⅲ)炸药药柱在起爆直径10mm和6mm条件下的出射角、熄爆角及延迟时间,讨论了3种PBX炸药的爆轰传播特征和拐角性能。结果表明,起爆直径为10mm时,PBX-Ⅰ的出射角和熄爆角(22.7°和31.9°)明显小于PBX-Ⅱ的出射角和熄爆角(均为90°);起爆直径为10mm和6mm时,PBX-Ⅱ和PBX-Ⅲ的出射角和熄爆角均为90°,都能够传播为类似球形。对于CL-20基PBX,随着铝粉的加入和起爆直径的减小,其炸药半球均能够达到可靠传爆状态,具有较好的拐角性能。TATB基PBX炸药药柱的出射角和熄爆角均显著减小,表明TATB基PBX炸药药柱的拐角性能较差。3种PBX炸药的拐角性能优劣顺序为:PBX-Ⅱ>PBX-Ⅲ>PBX-Ⅰ。

To study the corner performance of detonation waves for TATB-based and CL-20-based polymer bonded explosive(PBX),the breakout angles,failure angles and delay time of PBX-Ⅰcontaining 95%TATB,PBX-Ⅱcontaining95%CL-20,and PBX-Ⅲcontaining 81.5%CL-20 and 13.5%Al with initiating diameters of 10 mm and 6mm were studied by Mushroom test.The detonation propagation characteristics and corner properties of three kinds of PBX explosive charge were discussed.Results show that,the first breakout angle and failure angle of PBX-Ⅰ(22.7°and 31.9°,respectively)were significantly smaller than those of PBX-Ⅱ(90°for both)with initiating diameter of 10 mm,the first breakout angles and failure angles of PBX-Ⅱand PBX-Ⅲ were all 90°with initiating diameters of 10 mm and 6 mm,and the detonation waves of PBX-Ⅱand PBX-Ⅲcan develop to similar hemispherical shape.Thus,for CL-20-based PBXs,their hemispherical charge could transmit detonation wave reliably in spite of the addition of Al powders and the decrease of initiation diameter,which implies that CL-20-based explosives have excellent performance of corner turning.When CL-20 is all substituted by TATB,both the first breakout angle and failure angle decrease significantly,which means that TATB-based explosives have poor performance of corner turning.The corner performance of detonation waves for the three kinds of explosive decreases in the order:PBX-Ⅱ>PBX-Ⅲ>PBX-Ⅰ.