Porous azide/high explosive micro-explosion sequence film and preparation method thereof

A high-energy explosive, azide technology, applied in metal azide compositions, explosives processing equipment, explosives, etc., can solve the problems of incompatibility with MEMS technology, complicated operation, prominent safety problems, etc.

Active Publication Date: 2022-05-27
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of metal azide has extremely high electrostatic sensitivity and explosion hazard, so it has hardly been used in practical applications for more than a century since it was synthesized.
In addition, the current explosion sequence mainly adopts the form of independent charge, and the priming charge and high-energy explosive are usually loaded in a press-packed manner, which is complicated to operate and has serious safety problems, which cannot be compatible with MEMS technology

Method used

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  • Porous azide/high explosive micro-explosion sequence film and preparation method thereof
  • Porous azide/high explosive micro-explosion sequence film and preparation method thereof
  • Porous azide/high explosive micro-explosion sequence film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A 0.10 mol / L CL-20 solution was prepared with ethyl acetate as a solvent, and the CL-20 solution was spin-coated on the porous CuN 3 Primer film, controlled spin coating speed of 50r / min, CL-20 and CuN 3 The mass ratio of CL-20 was 0.98. After the solvent was volatilized, CL-20 was recrystallized in the porous framework to obtain porous CuN 3 / CL-20 Micro-Explosive Sequence Film.

Embodiment 2

[0040] A 0.15 mol / L CL-20 solution was prepared with ethyl acetate as a solvent, and the CL-20 solution was spin-coated on the porous CuN 3 Primer film, controlled spin coating speed of 100r / min, CL-20 and CuN 3 The mass ratio of CL-20 was 1.53. After the solvent was volatilized, CL-20 recrystallized inside the porous framework to obtain porous CuN 3 / CL-20 Micro-Explosive Sequence Film.

[0041] figure 1 Porous CuN prepared for Example 2 3 The XRD pattern of the / CL-20 micro-explosive sequence film shows that the composition of the micro-explosive sequence film is Cu, CuN 3 and CL-20.

[0042] figure 2 Porous CuN prepared for Example 2 3 SEM images of / CL-20 micro-explosion sequence film, (a) is a top view, (b) is a cross-sectional view, the porous structure is clearly visible at this time, and the CL-20 crystals are filled in the porous CuN 3 in the interstitial space.

[0043] image 3 Porous CuN prepared for Example 2 3 DSC image of / CL-20 microexplosive sequent...

Embodiment 3

[0045] A 0.30 mol / L CL-20 solution was prepared with ethyl acetate as a solvent, and the CL-20 solution was spin-coated on the porous CuN 3 Primer film, controlled spin coating speed of 100r / min, CL-20 and CuN 3 The mass ratio of CL-20 was 3.0. After the solvent was volatilized, CL-20 recrystallized inside the porous framework to obtain porous CuN 3 / CL-20 Micro-Explosive Sequence Film.

[0046] Figure 4 Porous CuN prepared for Example 3 3 SEM images of / CL-20 micro-explosion sequence film, (a) is a top view, (b) is a cross-sectional view, at this time CL-20 fills the pore wall of the porous structure, CuN 3 The dendrite gaps were filled with CL-20.

[0047] Figure 5 Porous CuN prepared for Example 3 3 DSC image of / CL-20 microexplosive sequential film. It shows that the explosion sequence film has two exothermic peaks, the first peak corresponds to CuN 3 The thermal decomposition of CL-20, the peak temperature is about 190℃, the exothermic heat of the decomposition ...

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Abstract

The invention discloses a porous azide / high energy explosive micro-explosion sequence film and a preparation method thereof. The method uses a porous azide primer film as a substrate, and uses spin coating to uniformly infiltrate the high-energy explosive solution into the porous-structure primer. After the solvent is volatilized, the high-energy explosive recrystallizes in the porous framework, thereby producing a porous Azide / High Explosive Microexplosion Sequence Films. Compared with the porous azide primer film, the micro-explosion sequence film prepared by the invention has significant advantages such as high charge density, high energy output and low electrostatic sensitivity. In addition, the preparation process is safe, reliable, and highly operable. It can not only solve the problems of large volume and complex charging process faced by conventional independent charges, but also is fully compatible with the MEMS process, which helps to realize micro-explosion sequences in micro-devices or In situ integration on a chip.

Description

technical field [0001] The invention belongs to the field of energetic materials, and relates to a porous azide / high-energy explosive micro-explosive sequence film and a preparation method thereof. Background technique [0002] Micro-energetic device is the product of the combination of micro-electromechanical system (MEMS) technology, micro-nano technology, and energetic material technology. It has output functions such as combustion, detonation, and mechanical work. Self-destructing devices and other fields have a wide range of application value and have become a research hotspot in recent years. The development of miniaturization of energetic devices has put forward high requirements for high-energy output, low-energy stimulation, in-situ charging, small-scale propagation, and environmental protection for explosive sequences. The traditional lead-based detonator has insufficient detonation energy, high environmental toxicity, and is limited by its preparation process, so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B35/00C06D5/06C06B21/00
CPCC06B35/00C06D5/06C06B21/0033C06B21/0083
Inventor 张文超俞春培陈俊宏张钊荧陈亚杰王嘉鑫杨格行徐建勇
Owner NANJING UNIV OF SCI & TECH
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