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A method for preparing transparent conductive film from carboxyl functionalized graphene

A transparent conductive film, graphene technology, applied in the equipment, chemical instruments and methods for manufacturing conductive/semiconductive layers, conductive materials dispersed in non-conductive inorganic materials, etc., can solve the problem of low market share, technology Maturity and industrial production have not been completely opened up, etc., to achieve the effect of enhancing overall flexibility and electrical conductivity

Active Publication Date: 2021-08-06
华艺存
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the graphene transparent conductive film mainly adopts the CVD process route, the process maturity and industrial production have not been completely opened up, and the market share is also low. The present invention discloses a carboxyl-functionalized graphene coating film with low boiling Preparation method of graphene transparent conductive film for repairing film-forming defects by low-temperature bonding reaction deposition of phenylamide

Method used

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  • A method for preparing transparent conductive film from carboxyl functionalized graphene
  • A method for preparing transparent conductive film from carboxyl functionalized graphene
  • A method for preparing transparent conductive film from carboxyl functionalized graphene

Examples

Experimental program
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Effect test

Embodiment 1

[0026] (1) Measure 50 parts of graphene oxide slurry into the reaction kettle, stir and disperse with high-speed machinery for 5 minutes, then add 5 parts of a mixed solution of sulfuric acid and silver nitrate with a volume fraction ratio of 1:3, and continue stirring for 10 minutes until mixed Evenly, the reaction kettle was transferred to an ice-water bath environment, and the ultrasonic equipment with a power of 800W was used to assist the reaction for 3h. After the reaction, the solution was filtered with a Buchner funnel, and the filter cake was washed repeatedly with 5wt% dilute hydrochloric acid solution and deionized water for 3- Five times, the filter cake was dispersed into deionized water to prepare a carboxy-functionalized graphene dispersion with a concentration of 5 mg / mL.

[0027] (2) Adjust the optimum film-forming viscosity of the carboxyl-functionalized graphene dispersion to 8000mPa·s, adopt the scraping method to form the film, select the PET film substrate...

Embodiment 2

[0030] (1) The preparation method of the carboxyl-functionalized graphene dispersion is the same as in Example 1.

[0031] (2) Adjust the optimum film-forming viscosity of the carboxyl-functionalized graphene dispersion to 8000mPa·s, adopt the scraping method to form the film, select the PET film substrate with the release force of 15g / 25mm as the film-forming substrate, and adjust the size of the scraper accurately 0.20mm, after coating and forming a film, put it into an oven at 80°C for drying treatment to obtain a carboxyl-functionalized graphene film, and peel the film from the substrate by mechanical rolling.

[0032] (3) The preparation method of the graphene transparent conductive film is the same as that in Example 1.

Embodiment 3

[0034] (1) The preparation method of the carboxyl-functionalized graphene dispersion is the same as in Example 1.

[0035] (2) Adjust the optimum film-forming viscosity of the carboxyl-functionalized graphene dispersion to 8000mPa·s, adopt the scraping method to form the film, select the PET film substrate with the release force of 15g / 25mm as the film-forming substrate, and adjust the size of the scraper accurately 0.50mm, after coating and forming a film, put it into an oven at 80°C for drying treatment to obtain a carboxyl-functionalized graphene film, and peel the film from the substrate by mechanical rolling.

[0036] (3) The preparation method of the graphene transparent conductive film is the same as that in Example 1.

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Abstract

The invention relates to a method for preparing a transparent conductive film from graphene, and discloses a method for preparing a transparent conductive film from carboxyl-functionalized graphene. The method solves the technical problems of high-quality, macro-quantity, and high-efficiency preparation of the graphene transparent conductive film. The method comprises the following steps: (1) preparation of a modified carboxyl-functionalized graphene dispersion; (2) film formation of a carboxy-functionalized graphene dispersion; (3) using low-boiling benzene aminated as a carbon source, Chemical bonding, high-temperature vapor deposition targeted repair of graphene film-forming defects, to obtain graphene transparent conductive film.

Description

technical field [0001] The invention relates to a method for preparing a transparent conductive film, in particular to a method for preparing a transparent conductive film from carboxyl-functionalized graphene. Background technique [0002] Current transparent conductive films (TCFs) are thin films of optically transparent conductive materials, and they are important components of many electronic devices, including liquid crystal displays, OLEDs, touch screens, and photovoltaics. TCFs for photovoltaic applications are made from inorganic and organic materials. Traditional transparent conductive materials, such as indium tin oxide (ITO), are expensive, brittle, and inflexible. Although alternative networks such as carbon nanotubes, polycrystalline graphene, and metal nanowires have been proposed, the transparent and conductive properties of these materials are not suitable for a wide range of applications based on current technology and cost considerations. [0003] Due to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/00H01B5/14H01B1/18C01B32/194
CPCC01B32/194H01B1/18H01B5/14H01B13/0026
Inventor 张志旭华艺存郭海明
Owner 华艺存