Preparation method and property of 3,3'-dinitro-5,5'-azo-1H-1,2,4-triazole diammonium salt structure

Abstract

The invention relates to a preparation method and property of a high-energy insensitive explosive 3,3'-dinitro-5,5'-azo-1H-1,2,4-triazole diammonium salt structure, and belongs to the technical fieldof energetic materials. The synthesis method comprises the following steps: heating and dissolving 3,3'-dinitro-5,5'-azo-1H-1,2,4-triazole into water, adding silver nitrate with molar equivalent of 2,reacting for 1 hour under a dark condition and at a room temperature, filtering to obtain yellow solid, washing the solid with cold water for twice, and drying to obtain 3,3'-dinitro-5,5'-azo-1H-1,2,4-triazole silver salt; and adding the synthesized silver salt into an ammonium chloride aqueous solution with molar equivalent of 2, performing stirring reaction at 80 DEG C for 4 hours, filtering out precipitate after reaction, evaporating the filtrate to dryness, and recrystallizing the obtained solid with a small amount of water to obtain the corresponding product 3,3'-dinitro-5,5'-azo-1H-1,2,4-triazole diammonium salt. The synthesis method is simple, stable in properties and easy in amplified preparation. According to the synthesized energetic compound, the decomposition temperature is248 DEG C, the density is 1.89 g / cm<3>, the detonation velocity is calculated to be 9071 m / s, and the detonation pressure is 32.9 GPa. The detonation performance and HMX are equivalent and insensitive, and the explosive is a novel high-energy insensitive explosive with application potentiality.

Description

technical field [0001] The invention relates to a preparation method and performance of a novel high-energy insensitive explosive 3,3'-dinitro-5,5'-azo-1H-1,2,4-triazole bis-ammonium salt, and belongs to the technical field of energetic materials . Background technique [0002] In recent years, high-energy-density materials (HEDM), as a new type of high-energy explosive, have become a research hotspot in the field of energetic materials. The ideal characteristics of new energetic materials include: high positive enthalpy of formation, high density, high detonation velocity and pressure, good thermal stability, and low sensitivity to external stimuli such as impact or friction. However, high performance and low sensitivity are inherently contradictory, which brings many interesting but challenging problems to the synthesis of new high-energy-density materials. People have been trying to find a balance between performance and stability, expecting to design and synthesize new...

AI Technical Summary

Problems solved by technology

Salt formation can generally improve its sensitivity. Currently, only triaminoguanidine salt has been reported, and other energetic ion salts have not been studied.

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