Affiliation:
1. School of Materials Science & Engineering Beijing Institute of Technology Beijing China
2. Experimental Center of Advanced Materials, School of Materials Science & Engineering Beijing Institute of Technology Beijing China
3. China North Chemical Research Institute Group Co., Ltd Beijing China
4. Shanxi North Xingan Chemical Industry Co., Ltd. Taiyuan China
Abstract
AbstractTwo novel oxygen‐containing imidazo[1,2‐d][1,2,4]oxadiazole heterocycle compounds 2 and 3 were successfully synthesized by oxidation of the aminofurazan group. Compounds 2 and 3 were fully characterized by Fourier Transform Infrared, multinuclear NMR spectroscopy, elemental analysis, and single‐crystal X‐ray diffraction. Their properties were evaluated by measured density, impact, and friction sensitivities, calculated heat of formation, and detonation performances. Compound 2 has high density (1.87 g cm−3), good detonation velocity and pressure (D:8690 m s−1, P: 33.3 GPa), acceptable sensitivity (IS: 12 J, FS: 144 N), and its overall performance is comparable to RDX. Compound 3 has a better sensitivity (IS: 28 J, FS: 252 N), but the detonation performance is average (D:8008 m s−1, P: 27.4 GPa), which may be caused by its low packing index (70.9%) affecting its density (1.78 g cm−3).
Funder
National Natural Science Foundation of China