کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
672991 | 1459470 | 2015 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Thermal decomposition and kinetics of 2,4-dinitroimidazole: An insensitive high explosive Thermal decomposition and kinetics of 2,4-dinitroimidazole: An insensitive high explosive](/preview/png/672991.png)
• Pure 2,4-dinitroimidazole was prepared by re-crystallization from hot methanol.
• A detailed thermal analysis of 2,4-DNI by DSC, TGA, GC–MS and ignition temperature.
• Activation energy was calculated for thermal decomposition of 2,4-DNI
• Effect of polymeric binder on thermal decomposition of 2,4-DNI were also studied.
• Decomposition mechanisms of 2,4-DNI based on EI mass spectra were also described.
2,4-Dinitroimidazole (2,4-DNI) is a novel energetic material with much less sensitive and potential for use as a propellant/insensitive munition (IM) formulations. 2,4-DNI possess high thermal stability and less sensitivity as compared to RDX and HMX which are high explosives extensively used at present. This paper reports a detailed thermal study of 2,4-DNI using various instrumental techniques. The activation energy (E = 205 ± 15 kJ/mol) was calculated from thermal decomposition of 2,4-DNI using DSC at different heating rate. The ignition temperature of pure 2,4-DNI was measured and showed at 285 °C. The TGA experiments demonstrate that 2,4-DNI decomposes in three steps with 92% total weight lose. Moreover, the effect of thermal energy on decomposition of 2,4-DNI in presence of polymeric binders like GAP and HTPB were investigated. Further, decomposition mechanisms of 2,4-DNI based on Electron Impact mass spectra analysis were also reported along with its explosive properties.
Journal: Thermochimica Acta - Volume 614, 20 August 2015, Pages 93–99