Preparation method of benzotrifuroxan (BTF) and 2,4-dinitroanisole (DNAN) cocrystallized explosive

Abstract

The invention discloses a preparation method of a benzotrifuroxan (BTF) and 2,4-dinitroanisole (DNAN) cocrystallized explosive. The preparation method comprises the following steps of: (1) preparation of BTF-DNAN saturated solution, namely, adding sufficient quantity of BTF to a crystallization solvent at 20-50 DEG C, dissolving BTF and filtering the solution to obtain the BTF saturated solution; and adding DNAN to the BTF saturated solution to be dissolved and filtering the solution to obtain the BTF-DNAN mixed saturated solution; and (2) preparation of the BTF-DNAN cocrystallized explosive: putting the BTF-DNAN mixed saturated solution into a beaker, then standing in a constant temperature incubator, evaporating the solvent and drying the product, thus obtaining the BTF-DNAN cocrystallized explosive. The preparation method has the beneficial effects that the prepared BTF-DNAN cocrystallized explosive obviously reduces the sensitivity of BTF, obviously improves the energy of DNAN, has excellent detonation property, can serve as a novel insensitive detonating agent and has better application prospect in the insensitive ammunitions resistant to high overload and the like; and the preparation method has the advantages of simple process flow, convenience in operation, mild reaction conditions, good safety and high product quality.

Description

technical field [0001] The invention belongs to the field of energetic materials, and in particular relates to the preparation method of benzofurazan and 2,4-dinitroanisole (BTF-DNAN) eutectic explosive. has a good application prospect. Background technique [0002] The properties of energetic materials (detonation energy, thermal stability, sensitivity) are closely related to the density and melting point of the material. Since the energy and sensitivity of explosives synthesized so far are contradictory, that is, explosives with higher energy may also have higher sensitivity. The serious contradiction between the energy and safety of existing energetic materials restricts their further development and application. At present, methods such as recrystallization, polymer coating and compounding are usually used to modify the existing simple explosives. These traditional modification methods do not change the internal composition and crystal structure of explosives, so the m...

AI Technical Summary

Problems solved by technology

However, because of its high sensitivity, poor fluidity, and difficulty in loading, its application is greatly limited.

2,4-Dinitroanisole (DNAN) is a colorless to yellow needle-like crystal with low sensitivity, low melting point and low cost. It is a new type of casting agent, but its energy is low

At present, there is no published literature report on the preparation of BTF-DNAN co-crystal explosives

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