N<sub>2</sub>H<sub>6</sub><sup>2+</sup> Energetic Salts: A Promising Strategy for Increasing the Density and Balance Safety and Energy of Explosives
Jinhao Zhang, Zhiyuan Jin, Wenjia Hao, Zhicheng Guo, Ying Wang, Rufang Peng, Bo Jin
Abstract
The conflict between energy characteristics and security of explosives makes the synthesis of high-energy and low-sensitivity explosives always a great challenge. N 2 H 6 BTO is a high-energy material with higher density and thermal stability than the parent material and acceptable mechanical sensitivity. Three energetic ionic salts, N 2 H 6 (AFTO) 2, N 2 H 5 TzTO, and N 2 H 6 (TzTO) 2, were prepared by adjusting the reaction ratio of the parent molecule with hydrazine hydrate. Consistent with N 2 H 6 BTO, the density of N 2 H 6 2+ energetic salts is increased compared to the parent molecules. Moreover, N 2 H 6 2+ energetic salts show excellent thermal stability ( T d ≥ 255 °C) and high explosive performance ( D ≥ 9037 m·s –1, P ≥ 28.1GPa) and are insensitive (IS ≥ 35 J, FS ≥ 360 N). N 2 H 6 2+ energetic salt is expected to be an effective and simple strategy to improve the density of energetic materials and adjust the conflict between the energy characteristics and security of explosives.