| Author Name | Affiliation | | Changjin Lin | School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China | | Hao Wang | School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China | | Shuyuan Jiang | School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China | | Chenguang Zhu | School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China |
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| Abstract: |
| In order to analyze the thermal decomposition of MT based pyrolant in nitrogen and air environments, the thermal analysis experiments of MT and MTV pyrolants were carried out by TG-DTA and DSC. The results show that, in nitrogen environment, the spectrum result of Grignard-type reaction\[6\] is verified by the decomposition characteristics of MT and MTV pyrolants. 8.71% of Mg is consumed in the intermediate reaction of MT at 500-596 ℃ and the heat release of reaction is 31.93 kJ/g. The endothermic decomposition of the intermediate product is at 684-740 ℃. In MTV, the intermediate reaction is at 435-595 ℃ and the heat release of reaction are increased by the addition of fluororubber. The intermediate product degrades at 677-745 ℃. In air environment, the decomposition of MT and MTV show the different reaction mechanism from the nitrogen environment. The presence of oxygen is involved in the reaction of Mg, and inhibits the intermediate reaction process of Mg and PTFE. |
| Key words: MT based pyrolant thermal decomposition Grignard-type reaction nitrogen air |
| DOI：10.11916/j.issn.1005-9113.15339 |
| Clc Number:TJ55; O657.99 |
| Fund: |
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| Descriptions in Chinese: |
| Mg-PTFE基烟火药在氮气和空气环境中热分解研究 林长津1，王 浩1，蒋淑园1，朱晨光2 (1. 南京理工大学 能源与动力工程学院；2. 南京理工大学 化工学院) 创新点说明： 1) 采用TG-DTA热分析仪温度范围增大至850℃，验证中间反应过程的存在； 2) 研究了MT和MTV烟火药在氮气和空气环境中的不同反应机理。 研究目的： 研究MT基烟火药在氮气和空气环境中的热分解特性及其不同机理。 研究方法： 采用TG-DTA和DSC方法开展了MT和MTV烟火药的热分析实验研究。 结果： 1) 氮气环境中，MT和MTV烟火药热分解特性验证了格式中间反应理论的光谱分析实验结果，确认了MT中间反应过程发生在温度范围500℃~596℃，反应消耗8.71%质量Mg金属，放热量为31.93kJ/g，中间产物的分解发生在温度范围684℃~740℃，为吸热过程； 2) MTV中间反应过程发生在温度范围435℃~595℃，中间产物的分解发生在温度范围677℃~745℃，氟橡胶的添加增加了反应放热量； 3) 而在空气环境中，MT和MTV热分解显示了与氮气环境不同反应机理，氧气的存在不仅参与镁的反应过程，而且抑制了镁和聚四氟乙烯的中间反应过程。 结论： 1) 获得了MT和MTV烟火药在氮气和空气环境中的热分解特性； 2) 验证了文献关于MT和MTV烟火药格式中间反应理论的光谱分析实验结果； 3) 确认了MT和MTV烟火药在氮气和空气环境中的热分解存在不同反应机理； 关键词：MT基烟火药；热分解；格式反应；氮气；空气 |
