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HMX-based energetic microsphere preparation system and method based on droplet micro-fluidic technology

A microfluidic technology and preparation system technology, applied in the field of high-energy insensitive energetic material preparation, can solve the problems of complex and time-consuming manufacturing methods, and achieve the effects of narrow particle size distribution, high monodispersity, and great flexibility

Inactive Publication Date: 2021-08-13
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, membrane emulsification technology is promising as a new technology to improve the properties of microspheres, but these fabrication methods are complex and time-consuming, limiting their scope to be incorporated into industrial production

Method used

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  • HMX-based energetic microsphere preparation system and method based on droplet micro-fluidic technology
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  • HMX-based energetic microsphere preparation system and method based on droplet micro-fluidic technology

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Example 1: HMX / F 2602 Microsphere preparation and product characterization

[0040] Prepare 2ml of dispersed phase suspension, that is, suspend HMX explosive particles in 2ml ethyl acetate solution, and fluorine rubber (F 2602 ) The binder is dissolved in ethyl acetate, and the explosive concentration level is guaranteed to be 50g / L, F 2602 The mass fraction of the binder is 5%; 100ml of the continuous phase aqueous solution is prepared, and the surfactant sodium dodecylsulfonate (SDS) is dissolved in the aqueous solution, wherein the concentration of SDS is 0.5%. The dispersed phase and the continuous phase were respectively placed in the ultrasonic carrier liquid syringe 4 and the carrier liquid syringe 3, and the flow rate of the first syringe pump device 1 and the second syringe pump device 2 were respectively set at 0.1 ml / min and 1.6 ml / min. Set the constant temperature water bath to 35°C and the magnetic stirring speed to 60r / min. After the temperature is heat...

Embodiment 2

[0041] Example 2: HMX / TATB / F 2602 Microsphere preparation and sample characterization

[0042] Prepare 2ml of dispersed phase suspension, that is, suspend HMX (85%) and TATB (10%) explosive particles in 2ml of ethyl acetate solution, and fluorine rubber (F 2602 ) The binder is dissolved in ethyl acetate, and the explosive concentration level is guaranteed to be 50g / L, F 2602 The mass fraction of the binder is 5%; 100ml of the continuous phase aqueous solution is prepared, and the surfactant sodium dodecylsulfonate (SDS) is dissolved in the aqueous solution, wherein the concentration of SDS is 0.5%. The dispersed phase and the continuous phase were respectively placed in the ultrasonic carrier liquid syringe 4 and the carrier liquid syringe 3, and the flow rate of the first syringe pump device 1 and the second syringe pump device 2 were respectively set at 0.1 ml / min and 1.3 ml / min. Set the constant temperature water bath to 35°C and the magnetic stirring speed to 60r / min. A...

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Abstract

The invention relates to the technical field of preparation of high-energy insensitive energetic materials, and relates to an HMX-based energetic microsphere preparation system and method based on a droplet micro-fluidic technology. The system comprises: a fluid driving unit for driving a dispersed phase and a continuous phase; a droplet production unit which mainly comprises a micro-fluidic chip, the dispersed phase and the continuous phase generating micro-droplets in the micro-fluidic chip, and the micro-droplets being solidified under the action of a micro-channel structure; and a sample collecting unit which is used for collecting the micro-droplets flowing out of the droplet micro-fluidic chip and further solidifying the micro-droplets to form solid microspheres. On the basis of the droplet micro-fluidic technology, explosive microspheres can be rapidly and accurately prepared by fixing experimental conditions and operating parameters in the reaction process, the prepared product is narrow in particle size distribution, good in spherical morphology and good in monodispersity, the problems that microspheres prepared in a traditional mechanical stirring high-capacity mode are not uniform in particle size and poor in spherical morphology, reagents are wasted and the like are solved, the risk in the traditional preparation process is reduced, and good economic benefits and application prospects are achieved.

Description

technical field [0001] The invention relates to the technical field of preparation of high-energy insensitive energetic materials, in particular to a preparation system and method for HMX-based energetic microspheres based on droplet microfluidic technology. Background technique [0002] 1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane (HMX) / 1,3,5-triamino-2,4,6-trinitrobenzene ( TATB)-based polymer binder explosive (PBX) is a typical high-energy insensitive energetic material, which is widely used in military and civilian fields. HMX has high detonation velocity (9000m / s), high impact sensitivity, high friction sensitivity and high temperature resistance, TATB has insensitivity (low impact and friction sensitivity) and heat resistance at the same time, a new type is made by mixing HMX and TATB in a certain proportion The Insensitive High Explosive (IHE) reduces the mechanical sensitivity of the high explosive while maintaining the overall high energy performance of the explo...

Claims

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Application Information

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IPC IPC(8): C06B25/34C06B23/00
CPCC06B23/00C06B23/001C06B25/34
Inventor 武碧栋周近强安崇伟王晶禹
Owner ZHONGBEI UNIV
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