Explosion Characteristics of Emulsion Explosive Mixed with RDX Powder

被引：0

作者：

Chen Y. ^{[1
]}

Ma H.-H. ^{[1
,2
]}

Shen Z.-W. ^{[1
]}

Yang M. ^{[1
]}

Tian Q.-C. ^{[1
]}

机构：

[1] CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei

[2] State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei

来源：

Huozhayao Xuebao/Chinese Journal of Explosives and Propellants | 2019年 / 42卷 / 03期

关键词：

Emulsion explosive; Explosion characteristics; Explosion mechanics; Explosive welding; Foil; RDX;

D O I：

10.14077/j.issn.1007-7812.2019.03.005

中图分类号：

学科分类号：

摘要：

In order to satisfy the demand of reducing critical thickness for explosives applied to metal foil explosion welding, the mixed explosives were obtained by introducing RDX powder into emulsion explosives. The effects of RDX content on the detonation performance of mixed explosives were studied by underwater explosion experiment, detonation velocity test and explosive brisance test. The results show that the critical thickness of mixed explosive decreases significantly with the increase of RDX content. For mixed explosives with RDX mass fraction of 0, 5%, 10%, 15% and 20%, the value of critical thickness was (5.9±0.1), (4.8±0.1), (4.1±0.1), (3.7±0.1) and (3.3±0.1)mm, respectively, while the critical detonation velocity basically remains unchanged at a value of about 2500m/s. All energy output parameters of underwater explosion such as shock overpressure peak, specific shock energy, specific bubble energy, and total energy increase with the increase of RDX content. After adding 5%, 10%, 15% and 20% RDX, the shock overpressure peak at 1.0m from the explosion center increase by 3.8%, 7.4%, 12.7% and 17.3%, respectively, and the total energy increase by 7.2%, 16.8%, 22.2% and 26.4% simultaneously. The brisance of the mixed explosive also increases with the RDX content, and it is more significant within a lower RDX content range. When the mass fraction of RDX are 0, 5%, 10%, 15% and 20%, the brisance of the mixed explosives are 0.25, 0.31, 0.35, 0.37 and 0.42, respectively. Therefore, the mixed explosive is available for explosive welding of metal foil. © 2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.

引用

页码：242 / 246

页数：4

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