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UV-type graphene quantum dot/nano-silver wire composite solvent-based conductive ink and flexible transparent conductive film based thereon

A technology of graphene quantum dots and transparent conductive films, which can be used in inks, household appliances, applications, etc., can solve the problems of inapplicability of flexible transparent conductive films, poor optical properties of conductive films, and inapplicability of large-size displays. Leveling, improving light and heat stability, and improving the effect of light and heat stability

Active Publication Date: 2019-02-01
合肥微晶材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the transparent conductive film used in the market is mainly ITO (indium tin oxide) film, but it has the following disadvantages: poor flexibility, not suitable for flexible transparent conductive films; large square resistance, not suitable for large-size displays; limited ITO reserves
[0004] At present, although there are many flexible transparent conductive films with nano-silver wires, their formulas are all obtained by increasing the content of nano-silver wires to obtain a low-resistance conductive film. The increase in the content of nano-silver wires will inevitably lead to poor optical properties of the conductive film.
At the same time, most of the existing formulas are water-based, and the conductive film has high water absorption rate and general stability.

Method used

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  • UV-type graphene quantum dot/nano-silver wire composite solvent-based conductive ink and flexible transparent conductive film based thereon
  • UV-type graphene quantum dot/nano-silver wire composite solvent-based conductive ink and flexible transparent conductive film based thereon
  • UV-type graphene quantum dot/nano-silver wire composite solvent-based conductive ink and flexible transparent conductive film based thereon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] (1) Preparation of composite solvent-based conductive ink:

[0069] The raw materials of the UV-type graphene quantum dots / nano-silver wire composite solvent-based conductive ink in this embodiment are composed of the following mass percentages:

[0070]

[0071] The specific preparation method is as follows:

[0072] a. Add graphene oxide into water, and disperse evenly by ultrasonic to obtain an aqueous solution of graphene oxide with a concentration of 10mg / mL, and pour it into a closed flask, and use an oven to treat it at 210°C for 15h, then cool and centrifuge, and the obtained precipitate is dried Afterwards, graphene quantum dots with thickness≤1nm and sheet diameter≤20nm are obtained.

[0073] Dilute the silver nanowires with ethanol to a 20mg / mL dispersion;

[0074] b. Accurately weigh each raw material according to the ratio;

[0075] c. In a clean room, under yellow light, add the mixed solvent and dispersant to the dispersing tank at one time, mechani...

Embodiment 2

[0083] (1) Preparation of composite solvent-based conductive ink:

[0084] The raw materials of the UV-type graphene quantum dots / nano-silver wire composite solvent-based conductive ink in this embodiment are composed of the following mass percentages:

[0085]

[0086] The specific preparation method is as follows:

[0087] a. Add graphene oxide into water, and disperse evenly by ultrasonic to obtain an aqueous solution of graphene oxide with a concentration of 10mg / mL, and pour it into a closed flask, and use an oven to treat it at 210°C for 15h, then cool and centrifuge, and the obtained precipitate is dried Afterwards, graphene quantum dots with thickness≤1nm and sheet diameter≤20nm are obtained.

[0088] Dilute the silver nanowires with ethanol to a 20mg / mL dispersion;

[0089] b. Accurately weigh each raw material according to the ratio;

[0090] c. In a clean room, under yellow light, add the mixed solvent and dispersant to the dispersing tank at one time, mechani...

Embodiment 3

[0098] (1) Preparation of composite solvent-based conductive ink:

[0099] The raw materials of the UV-type graphene quantum dots / nano-silver wire composite solvent-based conductive ink in this embodiment are composed of the following mass percentages:

[0100]

[0101] The specific preparation method is as follows:

[0102] a. Add graphene oxide into water, and disperse evenly by ultrasonic to obtain an aqueous solution of graphene oxide with a concentration of 10mg / mL, and pour it into a closed flask, and use an oven to treat it at 210°C for 15h, then cool and centrifuge, and the obtained precipitate is dried Afterwards, graphene quantum dots with thickness≤1nm and sheet diameter≤20nm are obtained.

[0103] Dilute the silver nanowires with ethanol to a 20mg / mL dispersion;

[0104]b. Accurately weigh each raw material according to the ratio;

[0105] c. In a clean room, under yellow light, add the mixed solvent and dispersant to the dispersing tank at one time, mechanic...

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Abstract

The invention discloses a UV-type graphene quantum dot / nano-silver wire composite solvent-based conductive ink and a flexible transparent conductive film based thereon. The conductive ink is preparedby uniformly mixing graphene quantum dots, prepared from graphene oxide in an ethanol solution of nano-silver wires, UV resin, a UV monomer, a photoinitiator, a dispersant and a mixed solvent according to a certain ratio; and the flexible transparent conductive film is obtained by coating the non-hardened surface of a substrate with the conductive ink through a dimpled coating process, drying theink by a tunnel furnace and carrying out UV curing. The flexible transparent conductive film has the characteristics of simple structure, good flexibility, high stability, low square resistance, excellent optical performances, simple preparation process and easiness in industrial production, and is suitable for large-size display and flexible display.

Description

technical field [0001] The invention belongs to the field of electronic display, and specifically relates to a UV-type graphene quantum dot / nanometer silver wire composite solvent-based conductive ink and a flexible transparent conductive film based on it. The conductive film has good flexibility, high stability and low square resistance , excellent optical performance, simple preparation process, and easy industrial production, and is especially suitable for large-size displays and flexible displays. Background technique [0002] With the development of science and technology, electronic displays are gradually developing in the direction of thinness and large size, so the demand for flexible transparent conductive films with light weight, excellent flexibility and bending resistance is increasing simultaneously. At present, the transparent conductive film used in the market is mainly ITO (indium tin oxide) film, but it has the following disadvantages: poor flexibility, not ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/52C09D11/107C09D11/03C09D11/101C09D11/033
CPCC09D11/03C09D11/033C09D11/101C09D11/107C09D11/52
Inventor 张梓晗吕鹏杨锦张运奇聂彪
Owner 合肥微晶材料科技有限公司
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