Thermal Properties Study of Low-Melting-Point-DNAN and Analysis of Solidification Behavior of High-Melting-Point-DNAN,Propellants, Explosives, Pyrotechnics

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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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