Porous aromatic framework epaf-1 material and cl-20@epaf-1 composite energetic material and preparation method
An EPAF-1, porous aromatic skeleton technology, used in nitroalkane compositions, explosives, etc., can solve the problems of complex synthesis steps, increased research work on the stability of dispersed uniform materials, etc., and achieve good detonation performance, high Effects of energy density, mild preparation conditions
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Embodiment 1
[0026] The present invention uses energy-containing monomer cyanuric chloride and 5,5'-diamino-3,3'-bi-1,2,4-triazole (DABT) as raw materials to polymerize the energy-containing porous aromatic skeleton EPAF- 1 Synthetic route and structural diagram of the material:
[0027]
[0028] Weigh 92.5mg of cyanuric 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 was filtered. ...
Embodiment 2
[0036] Weigh 92.5mg of cyanuric chloride (0.5mmol) and 124.5mg of DABT (0.75mmol) in a 10mL pyrex glass tube, add 2mL of o-dichlorobenzene and 0.3mL of 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 vacuum-dry overnight at 80° C. to obtain the porous aromatic skeleton EPAF-1 material. Weigh 600mg of CL-20 into a glass bottle, add 5mL of acetone and 5mL of n-hexane mixed solvent to fully dissolv...
Embodiment 3
[0038] Weigh 925mg of cyanuric chloride (5mmol) and 1.25g of DABT (7.5mmol) in a 100mL two-necked bottle, add 20mL of mesitylene and 3mL of N,N diisopropylethylamine (DIPEA), and ultrasonicate the mixed solution for a period of time. 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 skeleton EPAF-1 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-1 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 then the CL-20@EPAF-1 composite with 75wt% CL-20 doping amount can be obtained Energetic materials.
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