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A kind of al-cuo/graphene oxide composite film and preparation method thereof

A graphene composite, graphene film technology, applied in nanotechnology, nanotechnology, coating and other directions for materials and surface science, can solve the propagation restraint of thermite reaction, slow energy release rate, limit thermite, etc. problems, to achieve the effect of improving the contact area and uniformity, reducing the initial ignition energy, and improving safety

Active Publication Date: 2018-01-23
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional thermites are mainly prepared by physical mixing of oxidizing agents and reducing agents, which can easily cause the propagation of the thermite reaction to be restrained, resulting in low actual heat release and slow energy release rate, which limits the practical application of thermites

Method used

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  • A kind of al-cuo/graphene oxide composite film and preparation method thereof
  • A kind of al-cuo/graphene oxide composite film and preparation method thereof

Examples

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Effect test

Embodiment 1

[0026] A preparation method of Al-CuO / graphene oxide composite film, comprising the following steps:

[0027] (1) Surface pretreatment of copper substrate

[0028] a. Polishing: use sandpaper or a polishing machine to polish the copper sheet;

[0029] b. Degreasing: place the copper sheet in acetone for 10 minutes, ultrasonic power 1000W;

[0030] c. Pickling: place the copper sheet in a 20% hydrochloric acid solution for ultrasonic treatment for 5 minutes, and the ultrasonic power is 1000W;

[0031] (2) ultrasonically disperse the graphene oxide in the aqueous solution, the ultrasonic time is 1h, the ultrasonic power is 1000W, and it is configured into a 0.5mg / mL graphene oxide aqueous dispersion;

[0032] (3) Add the graphene oxide aqueous dispersion of step (2) into the electrophoretic deposition tank as the electrophoretic deposition solution, use stainless steel as the cathode pole piece, and place the copper sheet pretreated in step (1) as the anode pole piece in the e...

Embodiment 2

[0039] A preparation method of Al-CuO / graphene oxide composite film, comprising the following steps:

[0040] (1) Surface pretreatment of copper substrate

[0041] a. Polishing: use sandpaper or a polishing machine to polish the copper sheet;

[0042] b. Degreasing: place the copper sheet in ethanol for 10 minutes, ultrasonic power 1000W;

[0043] c. Pickling: Place the copper sheet in a 20% hydrochloric acid solution for ultrasonic treatment for 10 minutes, with an ultrasonic power of 500W;

[0044](2) Ultrasonically disperse the graphene oxide in the aqueous solution, the ultrasonic time is 2h, the ultrasonic power is 500W, and it is configured into a 1mg / mL graphene oxide aqueous dispersion;

[0045] (3) Add the graphene oxide aqueous dispersion of step (2) into the electrophoretic deposition tank as the electrophoretic deposition solution, use stainless steel as the cathode pole piece, and place the copper sheet pretreated in step (1) as the anode pole piece in the elect...

Embodiment 3

[0052] A preparation method of Al-CuO / graphene oxide composite film, comprising the following steps:

[0053] (1) Surface pretreatment of copper substrate

[0054] a. Polishing: use sandpaper or a polishing machine to polish the copper sheet;

[0055] b. Degreasing: Put the copper sheet in ethanol for 30 minutes and ultrasonically treat it with 300W ultrasonic power;

[0056] c. Pickling: place the copper sheet in a 20% hydrochloric acid solution for ultrasonic treatment for 5 minutes, and the ultrasonic power is 500W;

[0057] (2) Ultrasonically disperse the graphene oxide in the aqueous solution, the ultrasonic time is 3h, the ultrasonic power is 500W, and it is configured into a 2mg / mL graphene oxide aqueous dispersion;

[0058] (3) Add the graphene oxide aqueous dispersion of step (2) into the electrophoretic deposition tank as the electrophoretic deposition solution, use stainless steel as the cathode pole piece, and place the copper sheet pretreated in step (1) as the ...

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Abstract

The invention discloses an Al-CuO / oxide graphene composite film and a preparation method thereof. Firstly, oxide graphene films are prepared on a copper sheet substrate by using an electrophoretic deposition method; {PAH+CuO} mixed solution and {PAA+Al} mixed solution are prepared with polyallyl ammonium hydrochloride and polyacrylic acid as mediums; copper sheets loaded with the oxide graphene films are respectively dipped into the {PAH+CuO} mixed solution and the {PAA+Al} mixed solution; and the operations are circularly repeated to prepare the Al-CuO / oxide graphene composite film with different layer numbers through a layer-by-layer self-assembly method. The composite film, prepared by the method, is smooth in surface, is adjustable in thickness, controllable in structure and performance, low in preparation cost, simple in equipment, mild in conditions and capable of being applied to such military fields as ignition bridge films and MEMS initiating explosive devices.

Description

technical field [0001] The invention belongs to the technical field of composite film preparation, and in particular relates to an Al-CuO / graphene oxide composite film and a preparation method thereof. Background technique [0002] In recent years, the development of new ammunition and weaponry requires pyrotechnics to have higher safety and reliability, and at the same time meet the requirements of miniaturization and multi-function. Therefore, the technology of pyrotechnics is moving towards miniaturization, integration and The direction of multi-functional development, among which micro-electro-mechanical system (Micro Electro Mechanical System, MEMS) pyrotechnics is an important development direction. In order to achieve high safety and miniaturization of pyrotechnics, it is required that the ignition and transfer units of pyrotechnics do not contain sensitive energetic materials, the output and transfer energy of the micro-ignition bridge and micro-charges are large eno...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D13/02B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C23D13/02
Inventor 胡艳李家宽马小霞吴立志叶迎华沈瑞琪
Owner NANJING UNIV OF SCI & TECH
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