基于圆筒实验的RDX/Al炸药反应进程

裴红波; 焦清介; 覃剑峰

doi:10.11883/1001-1455(2014)05-0636-05

基于圆筒实验的RDX/Al炸药反应进程

doi: 10.11883/1001-1455(2014)05-0636-05

北京理工大学爆炸科学与技术国家重点实验室，北京 100081

基金项目: 国家自然科学基金项目（11172042）

详细信息

作者简介:
裴红波(1987—), 男, 博士研究生

中图分类号: O383
计量
- 文章访问数: 3104
- HTML全文浏览量: 355
- PDF下载量: 402
- 被引次数: 0
出版历程
- 收稿日期: 2013-03-27
- 修回日期: 2013-05-22
- 刊出日期: 2014-09-25

Reaction process of aluminized RDX-based explosives based on cylinder test

State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

摘要

摘要: 对RDX炸药和2种铝粉质量分数分别为15%、30%的RDX基含铝炸药进行∅50mm圆筒实验，研究铝粉含量对炸药做功能力的影响，根据格尼公式分析铝粉与爆轰产物的反应进程。结果表明：在圆筒实验记录的时间范围内，铝粉质量分数为15%的含铝炸药做功能力最强，RDX炸药次之，铝粉质量分数为30%炸药做功能力最弱；34μs时刻，铝粉质量分数为15%的炸药，铝粉的反应度为0.49，而铝粉质量分数为30%炸药铝粉的反应度仅为0.21，含铝炸药中铝粉的反应时间在50~200μs之间。
- 爆炸力学 /
- 反应进程 /
- 圆筒实验 /
- 含铝炸药 /
- 反应时间 /
- RDX
Abstract: The copper cylinder tests were carried out to explore the effects of the aluminum contents on the performances of aluminized RDX-based explosives.In the tests, the outer diameter of the copper cylinder was 50 mm and the mass fractions of aluminum in the three RDX-based explosives were 0, 15% and 30%, respectively.In the three explosives tested, the acceleration ability of the explosive with the aluminum mass fraction of 15% was highest.However, the acceleration ability of the explosive with the aluminum mass fraction of 30% was lower than that of the pure RDX.The Gurney formula was used to analyze the reaction process of aluminum with detonation products in the aluminized RDX-based explosives.About 49% aluminum by mass had reacted in the explosive with the aluminum mass fraction of 15% at 34 μs, while in the explosive with the aluminum mass fraction of 30%, only about 21% aluminum by mass had reacted.And the reaction time of aluminum powder with the size of 10 μm was 50-200 μs.
- mechanics of explosion /
- reaction process /
- cylinder test /
- aluminized explosive /
- reaction time /
- RDX

HTML全文

图 1 圆筒实验装置示意图

Figure 1. Schematic diagram of the cylinder tests

下载: 全尺寸图片幻灯片

图 2 圆筒膨胀过程

Figure 2. Cylinder expansion process

下载: 全尺寸图片幻灯片

图 3 不同膨胀距离处圆筒壁速

Figure 3. Wall velocities at different expansion distances

下载: 全尺寸图片幻灯片

图 4 圆筒壁速度时程曲线

Figure 4. Histories of wall velocity

下载: 全尺寸图片幻灯片

图 5 不同膨胀距离处筒壁比动能关系

Figure 5. Wall specific kinetic energies vs expansion distances

下载: 全尺寸图片幻灯片

图 6 圆筒壁加速度时程曲线

Figure 6. Histories of wall acceleration

下载: 全尺寸图片幻灯片

图 7 含铝炸药中铝粉反应度

Figure 7. Reaction degree of aluminum in explosive

下载: 全尺寸图片幻灯片

表 1 炸药配方

Table 1. Explosive formulations

炸药	w(RDX)	w(Al)	ρ/(g·cm^-3)	w(Al)/w(O)	v/(m·s^-1)
RA0	100	0	1.673	0	8 325
RA15	80	15	1.763	0.257	8 121
RA30	70	30	1.865	0.632	7 879

下载: 导出CSV

表 2 圆筒实验拟合系数

Table 2. Fitting coefficients of cylinder test

炸药	a	b	c	d	v/(m·s^-1)
RA0	3.960	0.593 1	-3.613	-0.109 00	8 325
RA15	5.511	0.571 0	-4.601	-0.073 64	8 121
RA30	5.740	0.616 9	-4.644	-0.080 71	7 879

下载: 导出CSV

表 3 含铝炸药的爆热

Table 3. Heat of aluminum explosive

炸药	ρ_T/(g·cm^-3)	ρ₀/(g·cm^-3)	Q/(MJ·kg^-1)	Q_e/(MJ·kg^-1)	Q(Al)/(MJ·kg^-1)
RA0	1.737	1.677	5.637	5.637	-
RA15	1.817	1.775	6.489	4.801	1.688
RA30	1.906	1.861	7.324	3.950	3.374

下载: 导出CSV

参考文献(10)

[1]	Victorow S B. The effect of Al₂O₃ phase transitions on detonation properties aluminized explosives[C]//Proceedings of the 12th International Detonation Symposium. San Diego, USA, 2002.
[2]	Milne A M, Longbottom A W, Evans D J. The burning rate of aluminum particles in nitromethane in cylinder tests[C]//Proceedings of the 12th International Detonation Symposium. San Diego, USA, 2002.
[3]	Miller P J. A reactive flow model with coupled reaction kinetics for detonation and combustion of non-ideal explosives[C]//Proceedings of MRS Symposium, Materials Research Society 1996: 413-419.
[4]	Trzcinski W A. Studies of detonation characteristics of aluminum enriched RDX compositions[J]. Propellants, Explosives, Pyrotechnics, 2007, 32(5): 392-400. doi: 10.1002/prep.200700201
[5]	Brousseau P. Detonation properties of explosives containing nanometric aluminum powder[C]//Proceedings of the 12th International Detonation Symposium. San Diego, USA, 2002.
[6]	于川, 李良忠, 黄毅民.含铝炸药爆轰产物JWL状态方程研究[J].爆炸与冲击, 1999, 19(3): 274-279. Yu Chuan, Li Liang-zhong, Huang Yi-min. Studies on JWL equation of state of detonation product for aluminized explosive[J]. Explosion and Shock Waves, 1999, 19(3): 274-279.
[7]	计冬奎, 高修柱, 肖川, 等.含铝炸药作功能力和JWL状态方程尺寸效应研究[J].兵工学报, 2012, 33(5): 552-555. http://d.wanfangdata.com.cn/Periodical/bgxb201205007 Ji Dong-kui, Gao Xiu-zhu, Xiao Chuan, et al. Study on dimension effect of accelerating ability and JWL equation of state for aluminized explosive[J]. Acta Armamentarii, 2012, 33(5): 552-555. http://d.wanfangdata.com.cn/Periodical/bgxb201205007
[8]	卢校军, 王蓉, 黄毅民, 等.两种含铝炸药作功能力与JWL状态方程研究[J].含能材料, 2005, 13(3): 144-147. doi: 10.3969/j.issn.1006-9941.2005.03.003 Lu Xiao-jun, Wang Rong, Huang Yi-min, et al. Study on work ability and JWL equation of state of two aluminized explosives[J]. Energetic Materials, 2005, 13(3): 144-147. doi: 10.3969/j.issn.1006-9941.2005.03.003
[9]	张宝坪, 张庆明, 黄风雷.爆轰物理学[M].北京: 兵器工业出版社, 2001.
[10]	Baudin G, Lefrancois A, Bergues D, et al. Combustion of nanophase aluminum in the detonation products of nitromethane[C]//Proceedings of the 11th International Detonation Symposium. Snowmass, USA, 1998.