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Method of preparing Al/Bi2O3 nano energetic material composite thin film

A composite thin film and nanotechnology, applied in the direction of electrolytic coatings, coatings, etc., can solve the problems of affecting the stability of energetic materials, unfavorable adhesion of energetic materials, poor uniformity of deposited films, etc., to achieve good market application prospects, film The effect of controllable thickness and uniform distribution of components

Inactive Publication Date: 2017-03-01
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the coating is unevenly distributed and the agglomeration is severe
Zhu Y H (Zhu YH, Li X M, Zhang D X et al.Material&Design, 2016, 109, 652-658) prepared Al / MoO by electrophoretic deposition 3 Nano-energy-containing thermite film, however, the uniformity of the deposited film is poor, and the adhesion is poor, etc.
For the improvement of the adhesion of the ceramic coating prepared by electrophoretic deposition or the formation of the coating, high-temperature treatment is often used, but for energetic materials, high temperature just provides a favorable excitation for heat output, which will seriously affect the energy-containing materials. stability
Therefore, the high temperature method is not conducive to the improvement of the adhesion of energetic materials

Method used

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  • Method of preparing Al/Bi2O3 nano energetic material composite thin film
  • Method of preparing Al/Bi2O3 nano energetic material composite thin film
  • Method of preparing Al/Bi2O3 nano energetic material composite thin film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Accurately weigh 0.1 mL of polyethyleneimine, dissolve it in 100 mL of ethanol solution, and sonicate for 1 hour at 298±1K. Weigh 0.1 g of nano aluminum particles and 0.9 g of bismuth trioxide nanoparticles into the above-mentioned mixed suspension, and after sealing with a plastic film, perform ultrasound at 298±1K for 20 minutes. Then, 3 mL of methacryloxysilane was weighed and added to the upper suspension and then sonicated at the same temperature for 20 minutes. Immediately insert the pre-treated titanium cathode and anode materials vertically into the stable suspension, and the applied electric field is 25Vmm -1 , Electrophoresis deposition is 20 minutes, and the deposition temperature is controlled at 298±1K. Then the Al / Bi obtained from the deposit 2 O 3 The nano-energetic material composite film is transferred to a vacuum drying oven and dried for 2 hours at 353~423±1K, and then cooled to room temperature. Al / Bi 2 O 3 Nano energetic material composite film.

[0...

Embodiment 2

[0034] Similar to Example 1, the difference is that the nanoparticle binder-methacryloxysilane is not added to the dispersion medium, and only polyethyleneimine is added as a surfactant to improve the surface charge of the nanoparticles. Adhesion level measured by the tape method is 2B.

Embodiment 3

[0036] Accurately weigh 0.1 mL of polyethyleneimine, dissolve it in 100 mL of ethanol solution, and sonicate for 1 hour at 298±1K. Weigh 0.1 g of nano aluminum particles and 0.9 g of bismuth trioxide nanoparticles into the above-mentioned mixed suspension, and after sealing with a plastic film, perform ultrasound at 298±1K for 20 minutes. Then, 3 mL of aminosilane was weighed and added to the upper suspension, followed by ultrasound at the same temperature for 20 minutes. Immediately insert the pre-treated titanium cathode and anode materials vertically into the stable suspension, and the applied electric field is 5-25Vmm -1 , Electrophoresis deposition is 20 minutes, and the deposition temperature is controlled at 298±1K. Then the Al / Bi obtained from the deposit 2 O 3 The nano-energetic material composite film is transferred to a vacuum drying oven and dried for 2 hours at 353~423±1K, and then cooled to room temperature. Al / Bi 2 O 3 Nano energetic material composite film. Ad...

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Abstract

The invention discloses a method of preparing an Al / Bi2O3 nano energetic material composite thin film. In the method, nano-scale aluminum powder and Bi2O3 powder serve as a sedimentary phase, aminosilane or methylacryloyloxysilane serves as a binder, and an electrophoretic deposition method is employed, thereby preparing the uniformly-distributed Al / Bi2O3 nano energetic material composite thin film. The Al / Bi2O3 nano energetic material composite thin film has controllable thickness, uniform component distribution, strong adhesion force, high purity without impurities, excellent heat release performance and excellent combustion property. The method has certain universality, and for other micro- and nano-particles, the method can be used for producing thin film product in uniform appearance at high efficiency. The method has simple process conditions, employs low-cost reaction materials and is high in film forming speed, is suitable for industrial production, and can be applied widely in the fields of bio-medicines, war industries, micro-computers and electronics, etc, and has good market application prospect.

Description

Technical field [0001] The invention relates to a method for preparing a nano-energetic material composite film, specifically, an Al / Bi 2 O 3 Nano-energetic material composite film belongs to the technical field of nano-composite material preparation. Due to its outstanding heat release and combustion performance, the nano-composite material is widely used in micropropellants, energetic bridge membranes, microcomputer electronics, triggers, ignition Many popular fields such as fuels. Background technique [0002] Energetic materials are a kind of materials that have rapid energy output and are accompanied by flames. The reaction during the period mainly includes thermite reaction, alloy reaction and so on. For different systems, the heat release is also very different, but they have their own unique application prospects in different fields. With the rapid development of nanotechnology, nano-energetic materials have greatly promoted the research of energetic materials. The sma...

Claims

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Application Information

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IPC IPC(8): C25D15/00
CPCC25D15/00
Inventor 黎学明郭晓刚杨文静尹艳君朱玉华徐珂
Owner CHONGQING UNIV
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