LLM-105/SI eutectic explosive and preparation method thereof

Abstract

The invention discloses an LLM-105 / SI eutectic explosive and a preparation method thereof.The preparation method comprises the steps that firstly, a mixed solution of LLM-105 and SI is prepared through a crystallization solvent, then the solution is left to stand under the condition of 0 DEG C to room temperature, and the LLM-105 / SI eutectic explosive is formed through crystal nucleation and growth. According to the method, the problem that an explosive with a strong hydrogen bond network is difficult to co-crystallize is solved, the planar explosive LLM-105 eutectic is obtained for the first time, and a new thought and method are provided for preparation and performance optimization of the energetic eutectic of LLM-105; and the method is mild in preparation condition, simple in process and convenient to operate.

Description

technical field [0001] The invention belongs to the field of design, preparation and performance regulation of new energetic materials, and specifically relates to a kind of 1-oxo-2,6-diamino-3,5-dinitropyrazine (LLM-105) and succinimide ( SI) Eutectic explosive and preparation method thereof. Background technique [0002] 1-Oxo-2,6-diamino-3,5-dinitropyrazine (LLM-105) is a new type of insensitive high-energy explosive with excellent comprehensive performance. It has good application prospects in fields such as perforation, and has been listed as one of the key targets in the mixed explosive formulation research program by the US Department of Defense and LLNL. The center of the LLM-105 molecule is a pyrazine ring, which is connected with two nitro groups, two amino groups and a coordination oxygen, and the whole molecule is planar. Its molecules form a near-planar layered stacking structure through strong hydrogen bonding, which makes it have high thermal stability. The ...

AI Technical Summary

Problems solved by technology

Although LLM-105 has significant advantages, it also has shortcomings that are difficult to overcome

One is that the energy of LLM-105 is only 20% higher than that of TATB, which limits its application in many explosive formulations

Second, the crystal morphology of LLM-105 is needle-like, which makes its sensitivity in practical applications often higher than expected, and also has a great impact on the granulation molding process and mechanical properties of LLM-105-based PBX explosives

In addition, LLM-105 is poorly soluble in most organic solvents, and only has high solubility in DMSO and DMF, which also has a negative impact on the engineering application of LLM-105

[0003] Since the shortcomings of LLM-105 are all derived from its crystal structure, without changing its crystal structure, it is difficult to improve its performance and application by adopting methods of shape control such as recrystallization, spheroidization, and ultra-fineness. improvement

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