爆破器材2017，Vol.46Issue(3)：17-21,5.DOI:10.3969/j.issn.1001-8352.2017.03.004
快/慢烤试验中复合推进剂内部温度场的分布
Internal Temperature Field Distribution of the Composite Propellant during Fast/Slow Cook-off Test
张杰凡 1徐森 1刘大斌 2李苗苗 1李辉 3陈愿 3李文海1
作者信息
- 1. 南京理工大学化工学院 江苏南京,210094
- 2. 国家民用爆破器材质量监督检验中心 江苏南京,210094
- 3. 上海航天动力技术研究所 浙江湖州,313000
- 折叠
摘要
Abstract
In order to study the response characteristic of composite propellant (PBT/HMX/AL/AP/BU) under different cook-off conditions,DSC was used to measure the thermal decomposition characteristic of the composite propellant and each of its single components.The initial decomposition temperature of the propellant is 187.27 ℃,and that of BU is 192.95 ℃ which is the lowest among all components.Thus,the thermal decomposition process is started from BU.The internal temperature field distribution of the composite propellant subjected to fast/slow cook-off test was also studied.Results indicate that the temperature distribution of the propellant is non-uniform in the fast cook-off test.90 s after the ignition,the central temperature of the sample is only 85 ℃,the pipe cap is ruptured and the combustion reaction occurs.Whilst the temperature distribution of the propellant is uniform in the slow cook-off test,the internal and the environmental temperatures are both 133 ℃.The pipe was completely broken,and a detonation reaction happened.Thus,in the slow cook-off test,since the internal temperature distribution is uniform,and most of the samples are in the critical reaction temperature,once an excitation occurs,the destructive effect will be more serious than that in the fast cook-off test.关键词
复合推进剂/慢速烤燃试验/快速烤燃试验/热爆炸Key words
composition propellant/slow cook-off test/fast cook-off test/thermal explosion分类
军事科技引用本文复制引用
张杰凡,徐森,刘大斌,李苗苗,李辉,陈愿,李文海..快/慢烤试验中复合推进剂内部温度场的分布[J].爆破器材,2017,46(3):17-21,5.
