Graphene oxide ink, preparation method and application thereof

A graphene ink and graphene technology, applied in the direction of graphene, single-layer graphene, chemical instruments and methods, etc., can solve the problems of unfavorable graphene oxide-based ink marketization, unfavorable large-scale production, high preparation requirements, etc., to achieve Smooth ink flow, good use effect, simple preparation effect

CN105860667BActive Publication Date: 2019-03-01NAT UNIV OF DEFENSE TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2019-03-01

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Abstract

The invention discloses graphene oxide ink as well as a preparation method and application thereof. The graphene oxide ink is prepared from graphene oxide, surfactant and solvent as raw materials, and counted by mass fraction, the graphene oxide accounts for 0.1%-0.5%, the surfactant accounts for 0.05%-0.5% and the rest is solvent. The preparation method comprises steps of dispersing the graphene oxide in the solvent, adding the surfactant to obtain a mixed solution, and carrying out filtering with a micro-filtration membrane to obtain the graphene oxide ink. The graphene oxide ink can be applied to an inkjet printer, and particularly can be used for preparing a graphene flexible circuit through an inkjet printer. The graphene oxide ink and the preparation method thereof disclosed by the invention have the advantages of greenness, environment protection, low cost, simple preparation and the like, and the graphene oxide ink applied to a common home inkjet printer can meet the market requirement.
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Description

technical field

[0001] The invention belongs to the technical field of electronic printing materials, and in particular relates to a graphene oxide ink and its preparation method and application. Background technique

[0002] Inkjet printing technology, which can realize the direct writing of complex patterns, is one of the most promising methods to realize the patterning of functional materials. At present, inkjet printing technology has been widely used in the preparation of various functional devices. The development of inkjet printing technology has promoted the development and application of new ink materials due to its advantages such as digitization, additive manufacturing, reduction of material waste, and compatibility with different substrates. Graphene is the most promising metallization component for printed electronic device technology due to its extraordinary electrical conductivity, tens of times stronger strength than steel, excellent light transmission and c...

Examples

Embodiment 1

[0049] A graphene oxide ink of the present invention is prepared from graphene oxide, a solvent and a surfactant as raw materials, the surfactant is sodium lauryl sulfate, and the solvent is water. In terms of mass fractions, the mass fraction of graphene oxide is 0.4%, the mass fraction of sodium lauryl sulfate is 0.1%, and the rest is water.

[0050] In this embodiment, graphene oxide is a single layer with a diameter of less than 1 μm.

[0051] In this embodiment, the viscosity of the graphene oxide ink is 3.6 mPa·s, and the surface tension is 42 mN / m.

[0052] A kind of preparation method of the graphene oxide ink of above-mentioned present embodiment, comprises the following steps:

[0053] S1, preparation of graphene oxide stock solution

[0054] (1) Weigh 3 g of graphite powder and 18 g of KnMO 4 Add it into a 1000 mL round bottom flask, stir evenly, and pour 400 mL of mixed acid of concentrated sulfuric acid and concentrated phosphoric acid with a volume ratio of 9:...

Embodiment 2

[0060] A graphene oxide ink of the present invention is prepared from graphene oxide, a solvent and a surfactant as raw materials, the surfactant is Triton X-100, and the solvent is water. Among them, the mass fraction of graphene oxide is 0.4%, the mass fraction of Triton X-100 is 0.25%, and the rest is water.

[0061] In this embodiment, graphene oxide is a single layer with a diameter of less than 1 μm.

[0062] A preparation method of the above-mentioned graphene oxide ink of this embodiment is the same as that of Embodiment 1 except that the added surfactant is 0.05 g of Triton X-100 (concentration is 2.5 mg / mL).

[0063] figure 2 and image 3 Respectively, the influence of graphene oxide concentration on viscosity and surface tension in the graphene oxide ink prepared by the present invention (without adding surfactant), as can be seen from the figure, the graphene oxide concentration in the graphene oxide ink has a greater influence on viscosity, the most The best i...

Embodiment 3

[0065] A kind of application of graphene oxide ink of the present invention in common household decoration inkjet printer, this graphene oxide ink adopts the ink that embodiment 1 or embodiment 2 prepares all can, and application process is as follows:

[0066] (1) For hydrophobic substrates such as polyimide film, etc., apply the mixed solution of HYDRO300 stock solution and isopropanol with a volume ratio of 3:7 for hydrophilic treatment.

[0067] (2) Clean the original 802 ink cartridges that come with ordinary household inkjet printers (preferably HP inkjet printers) with deionized water until there is no ink residue, inject graphene oxide ink into the ink cartridges with a syringe, and let the ink cartridges stand for 10 minutes. Mounted on an inkjet printer. Design the required pattern on the computer, and use the inkjet printer to print the graphene oxide ink on the paper, the polyimide film treated with hydrophilicity, and the aluminum foil respectively. The results ar...