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Porous aromatic framework epaf-2 material and cl-20@epaf-2 composite energetic material and preparation method

An EPAF-2, porous aromatic skeleton technology, applied in nitroalkane compositions, explosives, etc., can solve the problems that limit the practical application of porous material-based energetic materials, the structural design is not strong, and the skeleton does not contain energy, etc. Achieve the effect of meeting the requirements of industrial production, high energy density and easy operation

Active Publication Date: 2022-02-01
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Description
  • Claims
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Problems solved by technology

[0003] Although a series of research progress has been made in the field of energetic materials based on porous materials such as zeolites, porous carbons, and metal-organic frameworks (MOFs), most of the material frameworks do not contain energy, have poor structure designability, poor stability, difficulty in preparation, and high cost. High factors have largely limited the practical application of porous material-based energetic materials.

Method used

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  • Porous aromatic framework epaf-2 material and cl-20@epaf-2 composite energetic material and preparation method
  • Porous aromatic framework epaf-2 material and cl-20@epaf-2 composite energetic material and preparation method
  • Porous aromatic framework epaf-2 material and cl-20@epaf-2 composite energetic material and preparation method

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Embodiment 1

[0024] The present invention uses energetic monomer cyanuric acid chloride and 5,5'-diamino-3,3'-bi-1,2,4-triazole (DABT) as raw materials to polymerize g-C 3 N 4 The synthetic route and structural diagram of the energetic porous aromatic framework EPAF-2 material:

[0025]

[0026] Weigh 138.5mg of cyanowhite uric acid chloride (0.5mmol) and 124.5mg of DABT (0.75mmol) into a 10mL pyrex glass tube, add 2mL of mesitylene and 0.3mL of N,N diisopropylethylamine (DIPEA) , sonicate the mixed solution for 5 min. The freezing and pumping operation was carried out under the protection of nitrogen and liquid nitrogen, and three cycles of freezing-vacuumizing-thawing were performed, and then the tube was sealed under a butane / oxygen flame under vacuum conditions. When the glass tube containing the mixed solution rose to room temperature, it was placed in an oven at 180° C. for 3 days to react. The glass tube was removed from the oven to cool to room temperature, and the product wa...

Embodiment 2

[0033]Weigh 138.5mg cyanowhite uric acid chloride (0.5mmol) and 124.5mg DABT (0.75mmol) in a 10mL pyrex glass tube, add 2mL o-dichlorobenzene and 0.3mL N,N diisopropylethylamine (DIPEA ), the mixed solution was ultrasonicated for 5 min. The freezing and pumping operation was carried out under the protection of nitrogen and liquid nitrogen, and three cycles of freezing-vacuumizing-thawing were performed, and then the tube was sealed under a butane / oxygen flame under vacuum conditions. When the glass tube containing the mixed solution rose to room temperature, it was placed in an oven at 180° C. for 3 days to react. The glass tube was removed from the oven to cool to room temperature, and the product was filtered. Then wash with ethanol, boiling water, and ethanol respectively, and dry in vacuum at 80° C. overnight to obtain the porous aromatic skeleton EPAF-2 material. Weigh 600mg of CL-20 into a glass bottle, add 5mL of acetone and 5mL of n-hexane mixed solvent to fully diss...

Embodiment 3

[0035] Weigh 1.39g cyanowhite uric acid chloride (5mmol) and 1.25g DABT (7.5mmol) in a 100mL two-necked bottle, add 20mL mesitylene and 3mL N,N diisopropylethylamine (DIPEA), and ultrasonicate the mixed solution a period of time. Under the protection of nitrogen, the reaction was stirred in an oil bath at 180°C for 3 days, and the product was filtered. Wash with ethanol and boiling water respectively, and dry under vacuum at 80°C overnight to obtain the porous aromatic framework EPAF-2 material. Weigh 600mg of CL-20 into a glass bottle, add 5mL of acetone and 5mL of n-hexane mixed solvent to fully dissolve it, and then add 200mg of EPAF-2 material. Put the glass bottle in an oil bath at 50°C, and keep stirring with the open door open (stirring rate is 200r / min) until a dry solid powder is obtained, and the CL-20@EPAF-2 composite with 75wt% CL-20 doping amount can be obtained Energetic materials.

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Abstract

The present invention relates to a porous aromatic skeleton EPAF-2 material and CL-20@EPAF-2 composite energetic material and a preparation method thereof, which use energetic monomer cyanowhite uric acid chloride and 5,5'-diamino-3,3' ‑Link‑1,2,4‑triazole (DABT) as raw material, designed and synthesized a g‑C with high stability 3 N 4 The new energetic porous aromatic framework EPAF‑2 material with conjugated nitrogen-rich heterocyclic rings as the skeleton, combined with the high-energy and high-sensitivity single-substance explosive CL‑20, successfully obtained the new CL‑20@EPAF‑2 energetic material with both high energy and low sensitivity Composite materials provide a new research strategy for the development of new high-energy and low-sensitivity energetic materials.

Description

technical field [0001] The invention belongs to the field of energetic materials, and relates to a porous aromatic skeleton EPAF-2 material, a CL-20@EPAF-2 composite energetic material and a preparation method thereof. Background technique [0002] Energetic materials (EMs) will quickly release a large amount of energy to damage the surrounding objects after being excited by a specific stimulation method, and are widely used in military and civilian fields such as weapons and ammunition, aerospace propellants, mining engineering, pyrotechnics, etc. . However, high-energy substances are often accompanied by poor safety performance, such as being sensitive to external stimuli such as impact, friction, static electricity, and heat, and there may be accidental explosion risks during the entire life cycle of manufacturing, transportation, storage, and use. These unstable factors severely limit the development and application of energetic materials. Therefore, the development of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/06C06B25/40C06B43/00
CPCC08G73/0683C06B25/40C06B43/00
Inventor 束庆海宋健吕席卷吴启才邹浩明王俊峰杜君宜
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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