Preparation method of graphene conductive ink

A technology of conductive ink and graphene, which is applied in the direction of ink, household utensils, applications, etc., can solve the problems of easy agglomeration of graphene and difficulty in preparing uniformly dispersed graphene composite materials, and achieve the effect of avoiding the use of toxic organic solvents

Inactive Publication Date: 2020-02-21
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the van der Waals force between graphene sheets, it is very easy for graphene to agglomerate in the matrix material, and it is difficult to prepare a composite material with uniform dispersion of graphene.

Method used

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  • Preparation method of graphene conductive ink
  • Preparation method of graphene conductive ink
  • Preparation method of graphene conductive ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Weigh 0.5g of epoxy resin in a small beaker, add 0.1g of graphene powder at the same time, add 30ml of ethanol as a solvent, configure a dispersion, stir for 10 minutes, and ultrasonicate for half an hour; add 0.05g of it dropwise The brominated 1-vinyl-3-methylimidazole was ultrasonically treated for two hours again; polyetheramine (epoxy resin:polyetheramine=3:1) with a certain ratio to epoxy resin was added, and properly stirred to disperse , the prepared graphene conductive ink is coated on common A4 printing paper, and dried naturally to obtain the graphene conductive ink coating coated on A4 printing paper.

Embodiment 2

[0024] Weigh 0.5g of epoxy resin in a small beaker, add 0.1g of graphene powder at the same time, add 30ml of ethanol as a solvent, configure a dispersion, stir for 10 minutes, and ultrasonicate for half an hour; add 0.1g of it dropwise The brominated 1-vinyl-3-methylimidazole was ultrasonically treated for two hours again; polyetheramine (epoxy resin:polyetheramine=3:1) with a certain ratio to epoxy resin was added, and properly stirred to disperse , the prepared graphene conductive ink is coated on ordinary A4 printing paper, and dried naturally to obtain a graphene conductive ink coating coated on A4 printing paper, and the conductivity is improved.

Embodiment 3

[0026] Weigh 0.5g of epoxy resin in a small beaker, add 0.1g of graphene powder at the same time, add 30ml of ethanol as a solvent, configure a dispersion, stir for 10 minutes, and ultrasonicate for half an hour; add 0.2g of it dropwise The brominated 1-vinyl-3-methylimidazole was ultrasonically treated for two hours again; polyetheramine (epoxy resin:polyetheramine=3:1) with a certain ratio to epoxy resin was added, and properly stirred to disperse , the prepared graphene conductive ink is coated on common A4 printing paper, and dried naturally to obtain the graphene conductive ink coating coated on A4 printing paper.

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Abstract

The invention provides a preparation method for improving performance of graphene conductive ink by using imidazole type ionic liquid. The preparation method is mainly characterized in that the imidazole type ionic liquid is utilized to improve the dispersibility of graphene in the ultrasonic blending process, and meanwhile, the ionic liquid has certain conductivity and can synergistically improvethe conductivity of the prepared graphene conductive ink. The preparation process comprises the steps of firstly dispersing epoxy resin and graphene in a solvent, and meanwhile, adding imidazole typeionic liquid to stir and ultrasonically treat for a certain time; and finally obtaining a series of graphene conductive ink with excellent conductivity by adjusting the proportion of various substances. According to the method provided by the invention, excessive treatment on graphene is not required, and a series of graphene conductive inks with different conductive performances are finally obtained by adjusting the dosage of the imidazole type ionic liquid. The preparation process has the advantages of being relatively simple in process, suitable for various matrixes and the like.

Description

technical field [0001] The invention relates to a preparation method for improving the performance of graphene conductive ink by using imidazole-type ionic liquid, and belongs to the technical field of composite material preparation. Background technique [0002] With the innovation of information technology, the rise and development of printed electronic technology has been promoted. This technology is a new type of flexible electronic device manufacturing technology, and it is also an emerging additive manufacturing technology, which has significant advantages in the large-scale preparation of low-cost, multi-functional flexible electronic devices. It is the development of this field and the rise of the flexible electronic device industry that, as a key functional composite material in printing technology, the research on conductive ink has also entered a new stage. The conductive fillers used to prepare conductive inks mainly include metal nanoparticles, metal nanowires,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/52
CPCC09D11/52
Inventor 陈广新师晋超刘玉平李齐方
Owner BEIJING UNIV OF CHEM TECH
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