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Aqueous graphene conductive ink

A technology of water-based graphene and conductive ink, which is applied in the direction of ink, electric heating devices, electrical components, etc., can solve the problems of unstable performance, electrical conductivity can not meet the requirements, etc., to improve adhesion, improve electrical conductivity and long-term stability, The effect of increasing the number

Inactive Publication Date: 2017-08-22
BEIJING TUNGHSU CARBON ADVANCED MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the current graphene conductive ink, the interaction between graphene sheets and sheets leads to the failure of its conductive performance to meet the requirements, and there are also defects of unstable performance.

Method used

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preparation example Construction

[0059] A preparation method of water-based graphene conductive ink, comprising the following steps:

[0060] (1) Take graphene, water, grinding media, conductive particles, the second auxiliary agent, resin binder, the first auxiliary agent according to the above-mentioned mass percentage;

[0061] (2) described grinding medium, water-based graphene slurry and the first auxiliary agent are mixed to obtain the first mixture;

[0062] (3) Mix the conductive particles with the first mixture, disperse and stir evenly, and obtain the second mixture;

[0063] (4) Grinding the second mixture until the solid particle size is less than 5 μm, and filtering to obtain graphene conductive black paste.

[0064] (5) After the graphene conductive black paste, the resin binder and the first auxiliary agent are dispersed and stirred evenly, the water-based graphene conductive ink is obtained.

[0065] As preferably, in the step (2), the conditions of the dispersing and stirring include: the s...

Embodiment 1

[0081] This embodiment is used for illustrating and adopts the method for preparing water-based graphene conductive ink of the present invention.

[0082] (1) 100g water-based acrylic resin, 700g water-based graphene slurry (3% by mass of solid matter, containing 3.5g of surfactant), 10g dispersant SN-5027, 20g dispersant 760W, 5g wetting Add agent BYK-349, 15g defoamer 901W into the grinding tank, disperse and stir at 1000rpm for 2h, then add 150g of spherical conductive carbon black, disperse and stir at 1500rpm for 2h; then add 0.8~1.0μm zirconia beads Into the step (1) mixture, grind to a particle size of less than 5 μm, and discharge to obtain graphene conductive black paste;

[0083] (2) Add 500g graphene conductive black paste, 400g water-based acrylic resin emulsion, 20g dispersant BYK190, 15g defoamer BYK-024, 40g film forming agent, 15g leveling agent, 10g coupling agent KH550 into the dispersion tank , disperse and stir at 1000rpm for 3h, add pH regulator DMAE and ...

Embodiment 2

[0087] This embodiment is used for illustrating and adopts the method for preparing water-based graphene conductive ink of the present invention.

[0088] (1) 150g water-based acrylic resin, 600g water-based graphene slurry (5% by mass of solid matter, containing 6g of surfactant), 10g dispersant SN-5027, 20g dispersant 760W, 5g wetting agent Add BYK-349, 15g defoamer 901W into the grinding tank, disperse and stir at 1000rpm for 2h, then add 200g of rod-shaped zinc oxide, disperse and stir at 1500rpm for 2h; then add 0.8~1.0μm zirconia beads into the step (1) in the mixture, grind to a particle size of less than 5 μm, and discharge to obtain graphene conductive black paste;

[0089] (2) Add 600g graphene conductive black paste, 300g water-based acrylic resin emulsion, 20g dispersant BYK190, 15g defoamer BYK-024, 40g film forming agent, 15g leveling agent, 10g coupling agent KH550 into the dispersion tank , disperse and stir at 1000rpm for 3h, add pH regulator DMAE and thicken...

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Abstract

The invention discloses an aqueous graphene conductive ink, and belongs to the conductive ink field. The aqueous graphene conductive ink is prepared from, by mass, 0.09-6.40% of graphene, 8.10-63.36% of water, 3.00-24.00% of abrasive mediums, 1.50-24.00% of conductive particles, 3.00-8.00% of second assistants, 10.00-50.00% of resin adhesives and 5.00-20.00% of first assistants, wherein the first assistants comprises dispersing agents and defoamers, and the aqueous graphene conductive ink has a pH value of 8-10, a viscosity value of 3000-30000 mPa.S and a sheet resistance value of 100-5000 Omega. The aqueous graphene conductive ink has the advantages of a good conductivity and long-term stability.

Description

[0001] This application is a divisional application. The application date of the original application is March 20, 2017, the application number is 2017101666013, and the invention name is water-based graphene conductive ink, electric heating structure, device and preparation method thereof. technical field [0002] The invention relates to the field of conductive ink, in particular to a water-based graphene conductive ink. Background technique [0003] Conductive ink is a functional ink that adds conductive metal or non-metallic materials to the ink formula as conductive functional units, so that it has a certain conductivity. It is widely used in the fields of heating elements, membrane switches, solar cells and integrated circuits. important application. Generally, metals used as conductive fillers include silver powder, copper powder, nickel powder, etc., and non-metallic conductive materials are mainly carbon-based, such as graphite, carbon black, carbon fiber, etc. Com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/52C09D11/107C09D11/102C09D11/106C09D11/03
CPCC09D11/03C09D11/102C09D11/106C09D11/107C09D11/52H05B3/145H05B3/16H05B2203/013H05B2203/017
Inventor 李青孙金梅李赫然王忠辉
Owner BEIJING TUNGHSU CARBON ADVANCED MATERIALS TECH CO LTD
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