Synthesis, Crystal Structure and Thermal Behavior of Methyleneaminonitroguanidine (MANG)

被引：0
作者：
Yang H. [1 ]
Feng Z.C. [1 ]
Guan X.G. [1 ]
Xu K.Z. [1 ]
Song J.R. [1 ]
Zhao F.Q. [2 ]
机构：
[1] School of Chemical Engineering, Northwest University, Xi'an
[2] Xi'an Modern Chemistry Research Institute, Xi'an
来源：
Hanneng Cailiao/Chinese Journal of Energetic Materials | 2019年 / 27卷 / 02期
关键词：
Amino nitroguanidine(ANQ); Crystal structure; Energetic materials; Methyleneaminonitroguanidine (MANG); Synthesis;
D O I：
10.11943/CJEM2018184
中图分类号：
学科分类号：
摘要：
A new compound methyleneaminonitroguanidine (MANG) was synthesized using aminoguanidine (ANQ)and formaldehyde as raw materials, and the reaction process was analyzed. The crystal structure of MANG was analyzed by an X ray single diffractometer. Results show that the crystal belongs to an orthorhombic crystal system. Its space group is Pnn 2. Each unit cell contains four MANG molecules, and the crystal density is 1.63 g•cm-3. Thermal behaviors of MANG were studied by differential scanning calorimetry(DSC) and thermogravimetry derivative thermogravimetry (TG DTG). MANG presents only one intense exothermic decomposition process. At a heating rate of 5 ℃•min-1, the decomposition peak temperature and exothermic quantity of MANG are 170.9 ℃ and 1440 J•g-1, respectively. The standard molar enthalpy of combustion and the standard molar enthalpy of formation of MANG obtained by calculation are -1526.09 kJ•mol-1 and 33.81 kJ•mol-1, respectively. The detonation velocity 7.1 km•s-1 and detonation pressure 20.9 GPa of MANG predicted by Kamlet Jacobs(K J) equation are less than those of ANQ, but higher than those of TNT. The impact sensitivity(>7.9 J) of MANG is lower than that of ANQ(3 J) and RDX(7.4 J). © 2019, Editorial Board of Chinese Journal of Energetic Materials. All right reserved.
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页码：125 / 130
页数：5
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