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Thermal Properties Study of Low-Melting-Point-DNAN and Analysis of Solidification Behavior of High-Melting-Point-DNAN
Propellants, Explosives, Pyrotechnics ( IF 1.7 ) Pub Date : 2021-07-26 , DOI: 10.1002/prep.202100091
Danan Shi 1 , Lizhen Chen 1 , Jianlong Wang 1 , Jun Chen 2 , Hongxia Pan 2
Affiliation  

2,4-dinitroanisole (DNAN) is considered to be the most promising alternative to 1,3,5-trinitrotoluene (TNT), and the high-melting-point-DNAN (H-DNAN) has been widely used in military explosives. In this study, the thermal properties of low-melting-point-DNAN (L-DNAN) was studied by DSC. It was found the melting enthalpy of L-DNAN is 17.87 kJ mol−1 and the decomposition activation energies were obtained by Kissinger and Flynn-Wall-Ozawa methods as 200 kJ mol−1 and 198 kJ mol−1, respectively. Besides, it was also found that the cooling rate is the main factor that affects the solidification behavior of H-DNAN. Controlled and slow cooling allows L-DNAN crystallization from the melt of the more thermodynamically stable high melting point polymorph.

中文翻译:

低熔点-DNAN的热性能研究及高熔点-DNAN的凝固行为分析

2,4-二硝基苯甲醚(DNAN)被认为是1,3,5-三硝基甲苯(TNT)最有前途的替代品,高熔点DNAN(H-DNAN)已广泛应用于军用炸药。在本研究中,通过 DSC 研究了低熔点 DNAN (L-DNAN) 的热性能。发现L-DNAN 的熔化焓为17.87 kJ mol -1并且通过Kissinger 和Flynn-Wall-Ozawa 方法获得的分解活化能分别为200 kJ mol -1和198 kJ mol -1。此外,还发现冷却速度是影响 H-DNAN 凝固行为的主要因素。受控和缓慢冷却允许 L-DNAN 从热力学更稳定的高熔点多晶型物的熔体中结晶。
更新日期:2021-09-07
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