[1]王红星,罗一鸣,高杰,等.熔铸载体2,4-二硝基苯甲醚的热安全性研究[J].爆破器材,2020,49(03):16-21.[doi:10.3969/j.issn.1001-8352.2020.03.003]
 WANG Hongxing,LUO Yiming,GAO Jie,et al.Study on the Theremal Safety of the Melt-cast Carrier DNAN[J].EXPLOSIVE MATERIALS,2020,49(03):16-21.[doi:10.3969/j.issn.1001-8352.2020.03.003]
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熔铸载体2,4-二硝基苯甲醚的热安全性研究()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
49
期数:
2020年03
页码:
16-21
栏目:
基础理论
出版日期:
2020-05-22

文章信息/Info

Title:
Study on the Theremal Safety of the Melt-cast Carrier DNAN
文章编号:
5421
作者:
王红星罗一鸣高杰王晓峰
西安近代化学研究所(陕西西安,710065)
Author(s):
WANG Hongxing LUO Yiming GAO Jie WANG Xiaofeng
Xi’an Modern Chemistry Research Institute (Shaanxi Xi’an, 710065)
关键词:
24-二硝基苯甲醚(DNAN)分子结构DSC热感度烤燃试验1L烤燃
Keywords:
DNAN molecular structure DSC thermal sensitivity cook-off test 1L burning
分类号:
TJ55
DOI:
10.3969/j.issn.1001-8352.2020.03.003
文献标志码:
A
摘要:
为全面了解2,4-二硝基苯甲醚(DNAN)的热安全性,通过分子结构分析和DSC对DNAN的理化特性进行研究;并采用自行设计的热感度试验装置和1L烤燃试验装置,分析炸药在220、230 ℃和240 ℃等不同温度下的烤燃响应情况,观察了炸药在大尺寸烤燃过程中的变化情况;采用公斤级低易损性试验验证了DNAN基熔铸炸药的安全性。结果表明,DNAN分子结构稳定,在365.1 ℃发生热分解反应,5 s爆发点为374.1 ℃,活化能为215.0 kJ/mol;DNAN的烤燃过程经历4个阶段,分别为固-液相变阶段、慢速分解阶段、快速分解阶段和喷发及点火阶段;DNAN炸药良好的热安全性使DNAN基熔铸炸药在热刺激作用下反应温和,为其在低易损炸药上的应用奠定了基础。
Abstract:
In order to comprehensively study the thermal safety of DNAN, physical and chemical properties of DNAN were analyzed from molecular structure and DSC. Burning response of explosives at 220℃, 230 ℃ and 240 ℃ was analyzed by using a self-designed thermal sensitivity test device and a 1L burning test device. The change of large-scale burning process of explosives was observed. The safety of DNAN-based melt-cast explosive was verified by low vulnerability test in lilogram scale. The results show that the molecular structure of DNAN is stable, the thermal decomposition reaction takes place at 365.1 ℃, and the burst point at 5 s is 374.1 ℃. The activation energy is 215.0 kJ/mol. Cook-off process of DNAN goes through four stages which are solid-liquid phase change stage, slow thermal decomposition stage, fast thermal decomposition stage and eruption-ignition stage. The good thermal safety of DNAN enables the reaction of DNAN-based melt-cast explosive steady under thermal stimulation, which lays a foundation for its application in low vulnerability explosive.

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备注/Memo

备注/Memo:
收稿日期:2019-10-08
基金项目:国家重大专项基金项目(00401020202)
第一作者:王红星(1981-),男,副研究员,研究方向为熔铸炸药技术。E-mail :hxwang204@126.com
通信作者:王晓峰(1967-),男,研究员,研究方向为混合炸药技术。E-mail :wangxf_204@163.com
更新日期/Last Update: 2020-05-21