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Preparation method of monodispersed hexanitrohexaazaisowurtzitane micron hollow spheres

A technology of hexanitrohexaazane and isowurtzitane is applied in the field of preparation of hexanitrohexaazaisowurtzitane micron hollow spheres, and can solve the problems of poor dispersibility, complicated process, hexanitrohexaazaisowurtzitane micron There are few problems in the preparation of hollow spherical explosives, such as narrow particle size distribution, simple process flow, and mild experimental conditions.

Active Publication Date: 2017-07-14
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Judging from the existing public information, there are currently some methods for preparing microspheres of energetic materials, but the existing methods have complex processes, poor dispersion, and are not suitable for the preparation of hexanitrohexaazaisowurtzitane microsphere explosives. less description

Method used

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  • Preparation method of monodispersed hexanitrohexaazaisowurtzitane micron hollow spheres
  • Preparation method of monodispersed hexanitrohexaazaisowurtzitane micron hollow spheres
  • Preparation method of monodispersed hexanitrohexaazaisowurtzitane micron hollow spheres

Examples

Experimental program
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Embodiment 1

[0024] Weigh 0.5 g of hexanitrohexaazaisowurtzitane at room temperature, weigh 9 g of butyl acetate, and stir at 500 rpm to completely dissolve into a clear solution. Quickly put the resulting solution into a 5mL plastic syringe, replace the syringe with a 27G flat-top metal needle, and then install the syringe on the pusher pump in the electrostatic spray device with an ambient temperature of 30℃, and set the flow rate of the pusher pump. For 0.05mm / s, connect the positive high voltage to the metal flat pin. Fix the aluminum foil as the collector on an insulating plate and connect it to the negative high voltage power supply. Adjust the distance between the flat top needle and the collector to 20cm. Turn on the switch of the propulsion pump, first adjust the negative voltage to -10kV, and then adjust the positive voltage to 6kV. At this time, a Taylor cone appears on the flat top needle. After a period of stability, turn off the instrument to obtain monodisperse hexanitrohex...

Embodiment 2

[0026] Weigh 10 g of hexanitrohexaazaisowurtzitane at room temperature, measure 20 mL of acetone, and stir at 300 rpm to completely dissolve into a clear solution. Quickly put the resulting solution into a 5mL plastic syringe, replace the syringe with a 19G flat-top metal needle, and then install the syringe on the pusher pump in the electrostatic spray device with an ambient temperature of 20℃, and set the flow rate of the pusher pump. 0.2mm / s, connect the positive high voltage to the flat metal needle. Fix the aluminum foil as the collector on an insulating plate and connect it to the negative high voltage power supply. Adjust the distance between the flat top needle and the collector to 10cm. Turn on the switch of the propulsion pump, first adjust the negative voltage to -7kV, and then adjust the positive voltage to 6kV. At this time, a Taylor cone appears on the flat tip. After a period of stability, turn off the instrument to obtain monodisperse hexanitrohexaazaisowurtzi...

Embodiment 3

[0028] Weigh 2 g of hexanitrohexaazaisowurtzitane at room temperature, measure 10 mL of dimethylformamide, and stir at 700 rpm to completely dissolve it into a clear solution. Quickly put the resulting solution into a 5mL plastic syringe, replace the syringe with a 23G flat-topped metal needle, then install the syringe on the pusher pump in the electrostatic spray device with an ambient temperature of 35℃, and set the flow rate of the pusher pump. 0.075mm / s, connect the positive high voltage to the metal flat pin. Fix the aluminum foil as the collector on an insulating plate and connect it to the negative high voltage power supply. Adjust the distance between the flat top needle and the collector to 25cm. Turn on the switch of the propulsion pump, first adjust the negative voltage to -10kV, and then adjust the positive voltage to 8kV. At this time, a Taylor cone appears on the flat top needle. After a period of stability, turn off the instrument to obtain monodisperse hexanit...

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Abstract

The invention discloses a preparation method of monodispersed hexanitrohexaazaisowurtzitane micron hollow spheres. The preparation method comprises the following steps of: A, weighing a certain amount of hexanitrohexaazaisowurtzitane, adding the hexanitrohexaazaisowurtzitane into an organic solvent, and heating and stirring till the hexanitrohexaazaisowurtzitane is fully dissolved; and B, sucking the solution in the step A into an injector with a flat syringe needle, fixing the injector on a micro boost pump, setting parameters, adjusting the distance from the syringe needle to a collector, adjusting voltages on the syringe needle and the collector, and keeping a Taylor cone on the syringe needle for a while to obtain the monodispersed hexanitrohexaazaisowurtzitane micron hollow spheres. The product is spherical in particle morphology and narrow in distribution of particle dimension. The microspherical particles are composed of nanoparticles and have an important application prospect in the field of primary explosives and the like. The process flow is simple, and the prepared microspherical particles do not need further post-treatment, and the preparation method is mild in experimental condition and good in safety.

Description

Technical field [0001] The invention belongs to the technical field of preparation of energetic materials, and specifically relates to a preparation method of monodisperse hexanitrohexaazaisowurtzitane micron hollow spheres. Background technique [0002] Modern warfare puts forward higher requirements for improving the damage power of weapons, and the use of high-energy single-mass explosives with excellent performance is the most fundamental way to increase the power of explosives and increase the damage power of weapons. Hexanitrohexaazaisowurtzitane (CL-20) is the elemental explosive with the highest practical application energy today. Its energy output is 10-15% higher than that of Oktogen (HMX). Its application in the field of explosives can be significant Improve the damage capability of weapons and ammunition. [0003] Energetic materials with hollow and porous structures can significantly increase the burning rate of explosives due to their high specific surface area, whil...

Claims

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Application Information

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IPC IPC(8): C06B25/34C07D487/22
CPCC06B25/34C07D487/22
Inventor 黄川杨志剑丁玲何冠松聂福德
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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