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Water-based environmentally-friendly graphene conductive ink

A conductive ink and graphene technology, applied in inks, household appliances, applications, etc., can solve the problems of poor environmental protection performance and low conductivity of conductive inks, and achieve complete non-toxic and pollution-free solvents, low VOC content, and long service life. Effect

Active Publication Date: 2018-12-14
大同墨西科技有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of poor environmental performance and low electrical conductivity of current conductive inks, the present invention provides a water-based environmentally friendly graphene conductive ink

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: a kind of water-based environment-friendly graphene conductive ink, is made up of the raw material of following mass fraction: 15 parts of water-based polyurethane resin liquid, 72.5 parts of deionized water, 1.5 parts of graphite of Datong Moxi Technology Co., Ltd., 8.5 parts of acetylene black , 1 part of sodium polycarboxylate, 1.2 parts of BYK-024 water-based defoamer, 1.3 parts of carboxymethyl cellulose CMC.

[0021] The method for preparing water-based environmentally friendly graphene conductive ink, the steps are: first mix deionized water, dispersant, defoamer, and thickener in proportion, and ultrasonically stir for 30 minutes, ultrasonic power 300W, frequency 40~60kHz, stirring speed 300r / min; adding graphene in proportion to ultrasonic stirring for 1~3 hours, ultrasonic power 300W, frequency 40~60kHz, stirring speed 500r / min; adding acetylene black ultrasonic stirring for 2~4 hours, ultrasonic power 300W, frequency 40~60kHz, stirring Speed ​​...

Embodiment 2

[0024] Embodiment 2: a kind of water-based environment-friendly graphene conductive ink, is made up of the raw material of following mass fraction: 18 parts of water-based acrylic emulsions, 65.3 parts of deionized water, 2.5 parts of graphites of Datong Moxi Technology Co., Ltd., 10 parts of conductive graphites, 1.5 parts of sodium polycarboxylate, 1.2 parts of Dow Corning DC-69 water-based defoamer, 1.5 parts of carboxymethyl cellulose CMC. The preparation method is the same as that described in Example 1.

[0025] The main technical indicators of the water-based environmentally friendly graphene conductive ink made according to the above ratio: the viscosity is 13500mPa.s, the solid content is 19.4%, the water-based environmentally friendly graphene conductive ink is screen printed on the PET substrate, and dried at 100°C for 5 minutes After that, it is completely dry. The thickness of the tested film is 15μm, and the square resistance is 12Ω / cm 2 . The adhesion to PET f...

Embodiment 3

[0026] Embodiment 3: a kind of water-based environment-friendly graphene conductive ink, is made up of the raw material of following mass fraction: 20 parts of silicon acrylic emulsion, 60.5 parts of deionized water, 1 part of graphite of Datong Mexico Technology Co., Ltd., 6 parts of acetylene black, 10 parts of conductive graphite, 1 part of sodium oleate, 1.2 parts of Dow Corning DC-65 water-based defoamer, 1 part of carboxymethyl cellulose CMC. The preparation method is the same as that described in Example 1.

[0027] The main technical indicators of the water-based environmentally friendly graphene conductive ink made according to the above ratio: the viscosity is 9200mPa.s, the solid content is 23.3%, the water-based environmentally friendly graphene conductive ink is screen-printed on the PET substrate, and dried at 100°C for 5 minutes After that, it is completely dry. The thickness of the tested film is 15μm, and the square resistance is 15Ω / cm 2 . The adhesion to P...

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Abstract

The invention and provides a water-based environmentally-friendly graphene conductive ink to solve the problems of poor environmental protection performance and low electrical conductivity of conventional conductive ink, belonging to the technical field of conductive ink. The water-based environmentally-friendly graphene conductive ink is prepared from 10 parts to 30 parts of water-based polymer resin, 10 parts to 20 parts of a conductive filler, 50 parts to 120 parts of a solvent, 0.5 part to 3 parts of a dispersant, 0.5 parts to 3 parts of an antifoaming agent and 1 part to 5 parts of a thickener. The conductive ink uses the water-based polymer resin as a binder, and is prepared by subjecting the water-based polymer resin, the conductive filler, the solvent, a co-solvent and related auxiliary agents to compounding, stirring, grinding and processing. The conductive ink of the invention has the characteristics of adjustable resistivity, stable electrical conductivity, good bending resistance, strong adhesion, and no harm to environment and human beings in use. The conductive ink overcomes the disadvantages of toxicity, harm, environmental pollution, harm to the health of operators,high solvent cost and the like of oily solvents used by traditional conductive ink. The ink of the invention is applicable to printing processes such as screen printing, flexographic printing, gravure printing and coating.

Description

technical field [0001] The invention belongs to the technical field of conductive ink, in particular to a water-based environmentally friendly graphene conductive ink. Background technique [0002] Conductive ink is a paste ink made of conductive materials dispersed in the binder, which has a certain degree of conductive properties and can be used as printed conductive points or conductive lines. With the development of the electronics industry, the combination of electronic technology and printing technology is getting closer and closer, and the demand for conductive inks is also increasing. Most of the currently used conductive inks are solvent-based, and solvent-based inks contain volatile organic substances (VOC ) emission problem. With the gradual enhancement of people's awareness of environmental protection, there is an urgent need for environmentally friendly and green conductive inks in the market. [0003] Although the carbon powder filler commonly used in conduct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/52
CPCC09D11/52
Inventor 宋嘉伟陈永忠乔帅军张立福原帅华
Owner 大同墨西科技有限责任公司
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