Effect of the Al/O ratio on the Al reaction of aluminized RDX-based explosives

Aluminum（Al） powders are used in composite explosives as a typical reducing agent for improving explosion performance. To understand energy release of aluminum in aluminized RDX-based explosives, a series of thermal measurements and underwater explosion（UNDEX） experiments were conducted. Lithium flu...

Full description

Saved in:
Bibliographic Details
Published inChinese physics B Vol. 26; no. 5; pp. 259 - 264
Main Author 赵倩 聂建新 张伟 王秋实 焦清介
Format Journal Article
LanguageEnglish
Published Chinese Physical Society and IOP Publishing Ltd 01.05.2017
Subjects
aluminized RDX-based explosive
explosion heat
explosion mechanics
RDX炸药
underwater explosion
反应
含铝
水下爆炸
爆炸性能
爆轰产物
能量释放率
Online AccessGet full text
ISSN1674-1056
2058-3834
DOI10.1088/1674-1056/26/5/054502

Cover

More Information
Summary:Aluminum（Al） powders are used in composite explosives as a typical reducing agent for improving explosion performance. To understand energy release of aluminum in aluminized RDX-based explosives, a series of thermal measurements and underwater explosion（UNDEX） experiments were conducted. Lithium fluoride（LiF） was added in RDX-based explosives, as a replacement of aluminum, and used in constant temperature calorimeter experiments and UNDEXs. The influence of aluminum powder on explosion heat（Qv） was measured. A rich supply of data about aluminum energy release rate was gained. There are other oxides（CO2, CO, and H2O） in detonation products besides alumina when the content of RDX is maintained at the same levels. Aluminum cannot fully combine with oxygen in the detonation products. To study the relationship between the explosive formulation and energy release, pressure and impulse signals in underwater experiments were recorded and analyzed after charges were initiated underwater. The shock wave energy（Esk）, bubble energy（Eb）, and total energy（Et） monotony increase with the Al/O ratio, while the growth rates of the shock wave energy,bubble energy, and total energy become slow.
Bibliography:detonation explosion explosive underwater bubble calorimeter combine initiated charges powders
Aluminum（Al） powders are used in composite explosives as a typical reducing agent for improving explosion performance. To understand energy release of aluminum in aluminized RDX-based explosives, a series of thermal measurements and underwater explosion（UNDEX） experiments were conducted. Lithium fluoride（LiF） was added in RDX-based explosives, as a replacement of aluminum, and used in constant temperature calorimeter experiments and UNDEXs. The influence of aluminum powder on explosion heat（Qv） was measured. A rich supply of data about aluminum energy release rate was gained. There are other oxides（CO2, CO, and H2O） in detonation products besides alumina when the content of RDX is maintained at the same levels. Aluminum cannot fully combine with oxygen in the detonation products. To study the relationship between the explosive formulation and energy release, pressure and impulse signals in underwater experiments were recorded and analyzed after charges were initiated underwater. The shock wave energy（Esk）, bubble energy（Eb）, and total energy（Et） monotony increase with the Al/O ratio, while the growth rates of the shock wave energy,bubble energy, and total energy become slow.
Qian Zhao, Jian-Xin Nie, Wei Zhang, Qiu-Shi Wang, Qing-Jie Jiao（State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China）
11-5639/O4
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/26/5/054502