Influences of Additives on Thermal Decomposition Behavior of Ammonium Dinitramide

被引：0

作者：

Zhang J. ^{[1
]}

Wang T.-P. ^{[1
]}

Guo T.-L. ^{[1
]}

Li L. ^{[1
]}

Xu D.-Z. ^{[1
]}

机构：

[1] Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, Liaoning

来源：

Huozhayao Xuebao/Chinese Journal of Explosives and Propellants | 2019年 / 42卷 / 01期

关键词：

Activation energy; ADN; Ammonium dinitramide; HMT; Physical chemistry; Thermal stability; Urotropine;

D O I：

10.14077/j.issn.1007-7812.2019.01.005

中图分类号：

学科分类号：

摘要：

Prilled and modified ammonium dinitramide (ADN) and ADN/additive mixtures were prepared by adding three kinds of additives 3-amino-2-naphthol, urea and urotropine (hexamethylenetetramine, HMT) into ADN. The effect of the three kinds of additives on thermal decomposition behaviors of ADN was studied by differential scanning calorimetry (DSC) and thermogravimetric (TG) analysis method. The activation energies were calculated by Kissinger's method and Ozawa's method. The thermal decomposition behaviors of pure ADN and ADN/HMT mixture under isothermal conditions were further studied by isothermal methods(TG method and TAM method). The results show that the onset temperature and peak temperature of ADN decomposition were all increased by adding the three kinds of additives. When HMT was added to ADN, the enhancement of the onset temperature and the peak temperature of ADN decomposition is the largest among the three kinds of additives, the onset temperature of ADN is increased by 7.3-10.0℃ from DSC and 6.3-7.1℃ from TG, and the peak temperature is increased by 7.0-9.0℃ from DSC. The activation energies of ADN/HMT calculated by Kissinger's method and Ozawa's method are 155.6 and 165.2kJ/mol, respectively. When HMT is added, the initial decomposition rate of ADN is decreased from 3.0%/h to 1.6%/h, the exothermic peak changes from single peak to shoulder peak, and the peak position is obviously delayed, indicating that HMT can significantly inhibit the thermal mass loss and exothermal behavior of ADN. © 2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.

引用

页码：37 / 40and47

页数：4010

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