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Preparation method of multiple layers of graphene oxide-graphene composite films

A graphene composite, thin film preparation technology, applied in the direction of coating, pretreatment surface, device for coating liquid on the surface, etc., to achieve the effect of facilitating adhesion, enhancing adhesion, and reducing holding voltage

Inactive Publication Date: 2018-08-28
HARBIN ENG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims at the existing problems and provides a method for preparing a multilayer graphene oxide-graphene composite film

Method used

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  • Preparation method of multiple layers of graphene oxide-graphene composite films

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Experimental program
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Embodiment 1

[0032] Step 1: Dissolving graphene oxide in absolute ethanol to configure a 0.5 mg / ml graphene oxide ethanol solution;

[0033] Step 2: Dispersing graphene in absolute ethanol to form a 0.5 mg / ml graphene ethanol dispersion;

[0034] Step 3: Sonicate the above two solutions for 2 hours to disperse them evenly;

[0035] Step 4: First filter the graphene oxide solution with a 0.45 μm disposable nozzle, and put it into the ink bottle of the inkjet printer. Select a nozzle with a diameter of 80 μm, adjust the rise time to 5.0 μs, and the dwell time to 50.0 μs, fall time 10.0 μs, echo time 50.0 μs, final rise time 5.0 μs. No-load voltage 0.0 V, constant voltage 100.0 V, echo voltage -60.0 V, to obtain the expected stable droplets;

[0036] Step 5: Fix the PTFE plate on the printing table and heat it to 80°C;

[0037] Step 6: Set the printing script, the X-axis printing step is 0.05mm, 1000 points, and the Y-axis printing step is 0.05mm, 1000 points. That is, it is printed into ...

Embodiment 2

[0045] This embodiment is basically the same as the method described in Example 1, except that the solutions of graphene oxide and graphene in step 1 and step 2 are preferably 1% respectively; the diameter of the nozzle in step 4 is preferably 20 μm. In this example, the single-layer thickness of the prepared graphene oxide-graphene composite film is about 6 nm.

Embodiment 3

[0047] This embodiment is basically the same as the method described in embodiment 2, except that the step 4 preferably uses a 40 μm nozzle. In this example, the single-layer thickness of the prepared graphene oxide-graphene composite film is about 3 nm. .

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Abstract

The invention relates to a film preparation method, in particular to a method for preparing multiple layers of graphene oxide-graphene composite films through the ink-jet printing technology, and discloses a preparation method of multiple layers of graphene oxide-graphene composite films. Graphene and graphene oxide are dissolved in absolute ethyl alcohol, an ink-jet printing device is sequentially utilized for film printing, and the multiple layers of graphene oxide-graphene composite films are finally obtained by repeating the process. The shape sizes of sprayed-out liquid drops are controlled through the ink-jet printing technology, then the thickness of each layer of sprayed-out film is controlled, meanwhile, a cross-linking agent is added into a solution, bonding between the multiplelayers of composite films is improved, and the bonding force is enhanced.

Description

technical field [0001] The invention relates to a method for preparing a film, in particular to a method for preparing a multilayer graphene oxide-graphene composite film. Background technique [0002] Graphene has attracted much attention due to its unique structure, excellent performance, high theoretical research value, and broad application prospects. Graphene has excellent optical, electrical, and mechanical properties, and has important application prospects in materials science, micro-nano processing, energy, biomedicine, and drug delivery, and is considered to be a revolutionary material in the future. Graphene oxide (GO) is a graphene derivative rich in oxygen-containing functional groups, which can be obtained by exfoliating cheap graphite through chemical oxidation. GO has good water solubility and is easy to form a film. The nature of the film has a great relationship with the thickness of the film. Obtaining thinner and more uniform films has always been an i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D1/02B05D1/18B05D3/02B05D7/00B05D7/02
CPCB05D1/02B05D1/18B05D3/0254B05D7/02B05D7/52B05D7/56B05D2201/02
Inventor 鞠培海刘琦刘婧媛于静陈蓉蓉曹殿学张宏森邢涛
Owner HARBIN ENG UNIV
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