Synthesis, Crystal Structure and Properties of 4‑Hydroxy‑3, 5‑dinitropyrazologuanidine Salt (DNPOG)

被引：0

作者：

Dong W. ^{[1
]}

Cao W. ^{[1
]}

Bi Y. ^{[1
]}

Hu Y. ^{[1
]}

Wang T. ^{[1
]}

Zhang J. ^{[1
]}

机构：

[1] State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing

来源：

Zhang, Jian‑guo (zjgbit@bit.edu.cn) | 1600年 / Institute of Chemical Materials, China Academy of Engineering Physics卷 / 29期

关键词：

4‑hydroxy‑3; 5‑dinitropyrazole; Crystal structure; Energetic ionic salt; Thermal analysis;

D O I：

10.11943/CJEM2021119

中图分类号：

学科分类号：

摘要：

In order to obtain energetic materials with excellent performance, a new type of energetic ionic salt 4‑hydroxy‑3, 5‑dinitropyrazole guanidine salt (DNPOG) was synthesized by nitration, hydrolysis, acidification and salt formation reaction with 4‑chloropyrazole as raw material. The structure was characterized by FTIR, NMR and EA analysis. The crystal structure of DNPOG was triclinic with space group P‑1, relative molecular mass Mr=233.17 g·cm-1, a=4.8958(5) Å, b=8.1933(8) Å, c=11.9669(11) Å, Z=2, and crystal density Dc=1.750 g·cm-3. The contribution of hydrogen bond and π‑π conjugation in DNPOG to the intermolecular interaction force was calculated and studied, and the hydrogen bond accounted for 47%. The thermal decomposition characteristics were investigated by differential scanning calorimetry (DSC) and thermogravimetry (TG). The peak temperature of the first decomposition was 212.5 ℃. The detonation and safety properties of DNPOG were studied. The detonation velocity is 7871 m·s-1, the detonation pressure is 23.8 GPa, the formation enthalpy is -160.2 kJ·mol-1, the impact sensitivity is 20 J, and the friction sensitivity is 240 N. The results show that DNPOG is layered accumulation, with good thermal stability and low sensitivity, which is a kind of low sensitivity explosive with excellent performance. © 2021, Editorial Board of Chinese Journal of Energetic Materials. All right reserved.

引用

页码：726 / 731

页数：5

共 21 条

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