铝粉含量和粒度对CL-20含铝炸药水中爆炸反应特性的影响

胡宏伟; 严家佳; 陈朗; 郭炜; 宋浦

doi:10.11883/1001-1455(2017)01-0157-05

铝粉含量和粒度对CL-20含铝炸药水中爆炸反应特性的影响

doi: 10.11883/1001-1455(2017)01-0157-05

胡宏伟¹,
严家佳¹,
陈朗²,
郭炜¹,
宋浦^1, ,

1.
西安近代化学研究所, 陕西西安 710065
2.
北京理工大学, 北京 100081

基金项目:

总装重大预先研究专项项目 00401030701

详细信息

作者简介:
胡宏伟(1982—)，男，硕士，副研究员

通讯作者:
宋浦, songpu73@163.com

中图分类号: O381
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- 被引次数: 0
出版历程
- 收稿日期: 2015-04-23
- 修回日期: 2015-07-13
- 刊出日期: 2017-01-25

Effect of aluminum powder content and its particle size on reaction characteristics for underwater explosion of CL-20-based explosives containing aluminum

1.
Xi'an Modern Chemistry Research Institute, Xi'an 710065, Shaanxi, China
2.
Beijing Institute of Technology, Beijing 100081, Beijing, China

摘要

摘要: 为了研究CL-20基含铝炸药的爆炸反应机理，利用水中爆炸实验，测量了不同铝粉含量和粒度的CL-20炸药水中爆炸的冲击波参数、二次压力波参数，计算了冲击波能和气泡能。结果表明，水中爆炸的冲击波能和气泡能表征了爆轰和二次反应两个阶段的炸药爆炸能量分配，CL-20炸药中的铝粉主要在二次反应阶段发生反应，只有少部分的铝粉参与了早期的爆轰反应。气泡脉动形成的二次压力波能描述铝粉含量和粒度对二次反应过程的影响，铝粉含量对炸药的二次反应有显著的影响；铝粉粒度对炸药的水下爆炸的初始冲击波参数、冲击波能和气泡能的影响很小，对铝粉与爆轰产物的二次反应速率影响较大。
- 爆炸力学 /
- 气泡冲量 /
- 水中爆炸 /
- CL-20炸药 /
- 铝粉含量 /
- 二次反应 /
- 含铝炸药
Abstract: In the present work, the parameters of shock wave and secondary pressure wave with different aluminum powder content and particle size of CL-20-based aluminized explosives were measured by underwater explosion testing, the shock wave energy and bubble energy were calculated, and the explosion reaction mechanism of CL-20-based aluminized explosives was analyzed. The results show that the shock wave energy and the bubble energy of the underwater explosion represent the energy distribution in the early detonation period and the secondary reaction period, with only a minor portion of the aluminum powder participating in the early detonation period. The secondary pressure wave formed by the bubble pulsation can describe the effect of the aluminum and detonation products on the secondary reaction. The amount of the aluminum content has a significant influence on the process of the secondary reaction and, while the aluminum particle size has little effect on the initial shock wave parameters, shock wave energy and bubble energy, its effect is great on the secondary reaction rate of the aluminum power and detonation products.
- mechanics of explosion /
- bubble impulse /
- underwater explosion /
- CL-20 explosives /
- aluminum powder content /
- secondary reaction /
- aluminized explosives

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图 1 冲击波压力波形

Figure 1. Shock wave pressure history

下载: 全尺寸图片幻灯片

图 2 气泡脉冲波形

Figure 2. Bubble pulse profile

下载: 全尺寸图片幻灯片

表 1 炸药组分

Table 1. Explosives formulation

样品	ρ/(g·cm^-3)	m/g	ω(CL-20)/%	ω(Al)/%	ω(LiF)/%	ω(黏结剂)/%
1	1.94	12.04	80.0	15.0	0	5
2	1.94	12.05	80.0	0	15	5
3	1.94	18.20	95.0	0	0	5
4	2.00	19.20	81.5	13.5	0	5
5	2.06	19.80	70.0	25.0	0	5
6	2.11	20.50	60.0	35.0	0	5
7	2.00	19.20	81.5	13.5	0	5

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表 2 CL-20基炸药的水下爆炸冲击波与气泡参数和能量

Table 2. Shock wave and bubble parameter and energy of underwater explosion for CL-20-based explosives

样品	p_{s, max}/MPa	I_s/(Pa·s)	e_s/(MJ·kg^-1)	e_b/(MJ·kg^-1)
1	24.25	916.4	1.229	3.319
2	23.11	797.5	1.039	1.919

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表 3 CL-20基炸药的水中爆炸参数

Table 3. Parameters of underwater explosion for CL-20-based explosives

样品	ΔT_b/ms	p_{s, max}/MPa	p_{b, max}/MPa	p_{b, max}/p_{s, max}	I_s/(kPa·s)	I_b/(kPa·s)	I_b/I_s
3	2.98	29.25	2.60	0.089	1.10	2.36	2.15
4	4.39	28.00	2.44	0.087	1.12	3.23	2.88
5	5.25	27.36	2.03	0.074	1.71	3.79	2.22
6	7.52	25.70	1.78	0.069	1.64	4.21	2.57

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表 4 含两种粒度铝粉的CL-20基炸药的水下爆炸参数

Table 4. Parameters of underwater explosion for CL-20-based explosives containing powders with two particle sizes

样品	p_{s, max}/MPa	I_s/(kPa·s)	e_s/(MJ·kg^-1)	t_b/ms	e_b/(MJ·kg^-1)	p_{b, max}/MPa	ΔT_b/ms	I_b/(kPa·s)
4	28.00	1.116	1.503	69.98	2.927	2.44	4.39	3.227
7	27.62	1.136	1.543	69.84	2.907	2.79	3.51	3.088

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