RDX基金属化炸药的爆轰反应区参数测量

Measuring Detonation Reaction Zone Parameters of RDX⁃based Metallized Explosives

为了研究RDX基金属化炸药组分对爆轰过程的影响,采用光子多普勒测速技术(PDV)测试界面粒子速度法对两种RDX基金属化炸药的爆轰反应区参数进行了实验研究。利用造粒法制备了含铝(RDX/AP/Al)与含储氢合金(RDX/AP/Al/B/MgH_(2))两种金属化炸药,利用爆轰波加载起爆被测金属化炸药,并与钝化RDX炸药的爆轰反应区参数进行对比分析。结果表明AP/Al组分的加入使RDX的CJ爆轰压力从25.8 GPa降低到20.1 GPa,此外金属化炸药的爆轰反应区时间(53.6 ns)和长度(0.29 mm)均高于钝化RDX的爆轰反应区时间(24.3 ns)和长度(0.15 mm)。B/MgH_(2)的加入进一步升高了炸药的爆轰反应区时间(58.0 ns)和长度(0.30 mm)。高能金属燃料组分的加入降低了炸药的输出压力,提高了炸药的爆轰反应区时间和反应区长度。

To study the influence of RDX-based metallized explosive components on detonation process,the detonation reaction zone parameters of RDX-based metallized explosives were studied by the interface particle velocity history using photonic Dop-pler velocimetry(PDV).Two kinds of RDX-based metallized explosives were granulated,one composition incorporates aluminum(RDX/AP/Al),and the other incorporates hydrogen storage alloy(RDX/AP/Al/B/MgH_(2)).The metallized explosives were initiated by detonation wave,and the detonation reaction zone parameters were analyzed and compared with those of phlegmatized RDX.The results show that the addition of AP/Al component reduced the CJ detonation pressure of phlegmatized RDX from 25.8 GPa to 20.1 GPa.In addition,the detonation reaction zone time(53.6 ns)and length(0.29 mm)of metallized explosives were both higher than those of phlegmatized RDX(24.3 ns,0.15 mm).The addition of B/MgH_(2) further increased the detonation reaction time(58.0 ns)and length(0.30 mm)of the explosive.The addition of high-energy metal fuel reduced the output pressure of explosives,but increased the detonation reaction zone time and length of explosives.