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DAF and DNP eutectic explosive and preparation method thereof

A technology of eutectic explosives and orthorhombic crystal system, which is applied in the direction of explosives processing equipment, explosives, explosive composite components, etc., can solve the problems of poor comprehensive performance, low oxygen content, low density, etc., and achieve increased crystal density, good explosive Boom performance, ease of operation

Active Publication Date: 2020-04-24
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

3,4-Diaminofurazan (DAF) has a low density (1.61g / cm 3 ), low oxygen content (OB% = 80%, TNT OB% = 74%), high melting point (180 ° C), poor overall performance
At present, there is no public literature report on the eutectic explosive of DAF and DNP and its preparation method

Method used

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  • DAF and DNP eutectic explosive and preparation method thereof
  • DAF and DNP eutectic explosive and preparation method thereof
  • DAF and DNP eutectic explosive and preparation method thereof

Examples

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preparation example Construction

[0022] (1) Preparation of DAF and DNP solution

[0023] Dissolve a sufficient amount of DAF in a solvent, dissolve at a temperature of 20-50°C, and filter to obtain a DAF saturated solution; add sufficient DNP to the DAF saturated solution to dissolve, and filter to obtain a DAF and DNP saturated solution.

[0024] (2) Preparation of DAF and DNP eutectic explosive

[0025] Transfer the DAF / DNP solution to a beaker, then place the beaker in a constant temperature box, slowly evaporate the solvent at a certain temperature, filter and dry to obtain the DAF / DNP eutectic explosive.

[0026] figure 2 A diagram showing the molecular structure of the DAF / DNP co-crystal explosive confirmed by single crystal diffraction (SXRD). From the SXRD analysis results, it can be seen that the DAF molecules, DNP molecules, H 2 The molar ratio of O molecules is 1:1:1. The molecular formula of the eutectic is C 5 h 8 N 8 o 6 , belonging to the orthorhombic crystal system, P2 1 2 1 2 1 Sp...

Embodiment 1

[0036] At 20°C, add 10ml of industrial ethanol into a three-necked flask, add a sufficient amount of DAF, start stirring, dissolve, and filter to obtain a saturated DAF solution. Then add a sufficient amount of DNP to the above solution, stir, dissolve, and filter to obtain a saturated solution of DAF and DNP. Transfer the saturated solution of DAF and DNP to a beaker, slowly volatilize the solvent in a thermostat at 20°C, and precipitate crystals, filter and dry to obtain DAF / DNP eutectic explosive.

Embodiment 2

[0038] At 30°C, add 20ml of industrial acetonitrile into a three-necked flask, add a sufficient amount of DAF, start stirring, dissolve, and filter to obtain a saturated DAF solution. Then add a sufficient amount of DNP to the above solution, stir, dissolve, and filter to obtain a saturated solution of DAF and DNP. Transfer the saturated solution of DAF and DNP to a beaker, slowly volatilize the solvent in a thermostat at 30°C, precipitate crystals, filter and dry to obtain DAF / DNP eutectic explosive.

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Abstract

The invention relates to a DAF and DNP eutectic explosive and a preparation method thereof, in particular to a 3,4-diaminofurazan (DAF) and 3,4-dinitropyrazole (DNP) eutectic explosive and a preparation method thereof, and belongs to the field of energetic materials. The DAF / DNP eutectic explosive is prepared by taking DAF and DNP as raw materials and adopting a solvent evaporation method. Compared with DAF, the prepared DAF / DNP eutectic explosive has the advantages that the melting point is greatly reduced, the DAF / DNP eutectic explosive is more suitable for being used as a fusion casting matrix explosive; the crystal density is obviously improved by 6.1%; the detonation velocity is increased by 9.7%, and a good detonation performance is shown. The preparation conditions are mild, and theprocess is simple and easy to operate. The eutectic explosive is a novel high-energy low-sensitivity fusion casting matrix explosive and has a good application prospect.

Description

technical field [0001] The invention relates to a 3,4-diaminofurazan (DAF) and 3,4-dinitropyrazole (DNP) eutectic explosive and a preparation method thereof, belonging to the technical field of energetic materials. Background technique [0002] The current fused-cast matrix explosives have inherent defects, such as 2,4,6-trinitrotoluene (TNT) has low charge density, unsatisfactory detonation performance, and easy oil leakage during long-term storage; 3,4-Dinitrofurazanylfuroxan (DNTF) has a poor detonation performance; 3,4-Dinitrofurazanylfuroxan (DNTF) has a too high melting point and is volatile when preparing melting and casting drugs; 1,3,3-Trinitronitrogen The cost of heterocyclobutane (TNAZ) is too high to mass-produce; the synthesis route of 1-methyl-2,4,5-trinitroimidazole (MTNI) is cumbersome and the cost remains high. Traditional fused-cast matrix explosives can no longer meet the requirements of modern weapons for the performance of energetic materials. Therefor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B25/34C06B21/00
CPCC06B21/0008C06B25/34
Inventor 张晓鹏金韶华吴一歌束庆海王小军尚凤琴兰贯超张争争王静陈树森王霞胡旺华
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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