[1]张刚,陈清,李云秋,等.纳米Fe2O3对温压炸药中铝粉爆炸特性的影响[J].爆破器材,2022,51(04):11-15.[doi:10.3969/j.issn.1001-8352.2022.04.002]
　ZHANG Gang,CHEN Qing,LI Yunqiu,et al.Effect of Nano Fe2O3 on Explosion Characteristics of Aluminum Powder in Thermobaric Explosives[J].EXPLOSIVE MATERIALS,2022,51(04):11-15.[doi:10.3969/j.issn.1001-8352.2022.04.002]
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纳米Fe2O3对温压炸药中铝粉爆炸特性的影响()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
51
期数:
2022年04
页码:
11-15
栏目:
基础理论
出版日期:
2022-07-08

文章信息/Info

Title:
Effect of Nano Fe2O3 on Explosion Characteristics of Aluminum Powder in Thermobaric Explosives
文章编号:
5677
作者:
张刚; 陈清; 李云秋; 李斌
南京理工大学化学与化工学院（江苏南京，210094）
Author(s):
ZHANG Gang;  CHEN Qing;  LI Yunqiu;  LI Bin
School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology (Jiangsu Nanjing, 210094)
关键词:
纳米铝粉;  纳米Fe2O3;  爆炸特性; 粉尘云; 20 L柱形爆炸容器;  温压炸药
Keywords:
nano aluminum powder;  nano Fe2O3;  explosion characteristics;  dust cloud;  a 20 L cylindrical explosion vessel;  thermobaric explosives
分类号:
TQ560.7
DOI:
10.3969/j.issn.1001-8352.2022.04.002
文献标志码:
A
摘要:
为提高温压炸药配方的威力，根据铝热反应的基本原理，在温压炸药固相组分中添加纳米Fe2O3，探究通过诱导铝热反应的方式来提高炸药威力的新途径。利用20 L柱形爆炸容器在10 kJ点火能量下研究了不同质量比的微米或纳米铝粉与纳米Fe2O3组成的混合体系的爆炸特性。研究发现，随着纳米Fe2O3含量的增大，Al/Fe2O3混合体系的最大爆炸压力和升压速率呈现先增大、后减小的趋势。当纳米Fe2O3质量分数为5.4%时，混合体系的最大爆炸压力最大。随后，在此配比下开展了混合体系粉尘浓度对爆炸特性的影响规律研究。结果表明,随着粉尘浓度的增加，最大爆炸压力先增加、后降低，在质量浓度为400 g/m3时达到峰值。结合理论分析认为，纳米Fe2O3的加入能够改善温压炸药固相体系的反应活性，且对铝粉的爆炸剧烈程度有促进和抑制的双面作用。
Abstract:
In order to improve the power of thermobaric explosives, according to the basic principle of thermite reaction, nano Fe2O3 was added to the solid components of thermobaric explosives, and a new way to improve the power of explosive by inducing the thermite reaction was explored. Explosion characteristics of the mixed system composed of micron or nano aluminum powder and nano Fe2O3 with different mass ratios were studied using a 20 L cylindrical explosion vessel at 10 kJ ignition energy. It is found that with the increase of the content of nano Fe2O3, the maximum explosion pressure and pressure rise rate of Al/Fe2O3 mixed system first increase and then decrease. When the mass fraction of nano Fe2O3 is 5.4%, the maximum explosive pressure of the mixed system is the highest. Then, the influence of dust concentration of the mixed system on explosion characteristics was studied at this ratio. Results show that with the increase of the dust concentration, the maximum explosion pressure of the system shows a trend of first increasing and then decreasing, reaching a peak when the mass concentration is 400 g/m3. Combined with theoretical analysis, it is believed that the addition of nano Fe2O3 can improve the reaction activity of the solid phase system of thermobaric explosives, and it has the double-sided effect of promoting and inhibiting the explosion severity of aluminum powder.

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备注/Memo

备注/Memo:
收稿日期：2021-11-23
第一作者：张刚（1982－），男，工程师，主要从事爆炸安全技术研究。E-mail: zhanggang@njust.edu.cn
通信作者：李斌（1984－），男，博士，副研究员，主要从事多相流、云雾爆轰研究。E-mail: libin@njust.edu.cn
更新日期/Last Update: 2022-07-05