Potassium Nitraminofurazan Derivatives: Potential Green Primary Explosives with High Energy and Comparable Low Friction Sensitivities

5 years ago

Potassium Nitraminofurazan Derivatives: Potential Green Primary Explosives with High Energy and Comparable Low Friction Sensitivities

Renming Pan, Haifeng Huang, Jun Yang, Yameng Shi, Xiangyang Lin, Ying Li

Lead-based primary explosives were widely applied in military and civilian ammunition, which have subsequently caused serious environmental and health-related problems. Therefore, the development of green alternatives for the lead-based primary explosives has been one of the major focuses in the field of energetic materials. Four potassium salts based on nitraminofurazan have been easily synthesized and show excellent comprehensive performances. Among them, potassium 3-dinitromethyl-4-nitraminofurazan (K2DNMNAF, 1) showed better thermal stability (Td: 281.4 °C), higher density (2.174 g cm−3), and lower friction sensitivities (72 N) than that of potassium 4,5-bis(dinitromethyl)furoxanate (K2BDNMF, Td: 218.3 °C, density: 2.130 g cm−3, FS: 5 N, P: 27.3 GPa, vD: 7759 m s−1); furthermore, it displayed comparable detonation performances (P: 27.2 GPa, vD: 7758 m s−1). The promising properties of these salts make this kind of material a competitive alternative to lead azide as a primary explosive. An alternative for lead azide: Four potassium salts based on nitraminofurazan are easily synthesized and show excellent comprehensive performances as primary explosives. Among them, potassium 3-dinitromethyl-4-nitraminofurazan (K2DNMNAF, 1) exhibited promising detonation performances, good thermal stability, and comparably low friction sensitivity, which make it a competitive, green alternative to lead-based primary explosives (see scheme).

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/chem.201700739