Water-based graphene conductive ink and preparation method thereof

A water-based graphene and conductive ink technology, applied in inks, household appliances, applications, etc., can solve the problems of many steps, pollute the environment, and high equipment costs, achieve mild curing conditions, no heavy metal pollution, and good printing adaptability.

Pending Publication Date: 2020-10-23
深圳石墨烯创新中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional preparation processes of electronic devices mainly include photolithography, vacuum deposition and chemical plating. These methods have many steps, high equipment costs, and pollute the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The preparation method of the water-based graphene conductive ink of the present embodiment may further comprise the steps:

[0035] (1) Heat a ceramic crucible containing 100g of expandable graphite in a microwave oven with a power of 800W for 30s, wash it with deionized water to remove the acid solution remaining in the raw material, and dry it at 100°C for 5h to obtain a worm-like graphite with a volume expansion of 5 times ;

[0036] (2) Put 56g of water-based aldehyde and ketone resin, 4g of 2-amino-2-methyl-1-propanol, 200g of ethanol and 640g of deionized water into the dispersion kettle, stir to make it completely swell and dissolve, and obtain a viscosity of 7000Pa·s Water-based polymer resin slurry;

[0037] (3) mixing the worm-like graphite obtained in step (1) and the aqueous polymer resin slurry obtained in step (2), stirring evenly, to obtain a graphite coarse slurry;

[0038] (4) Transfer the coarse graphite slurry to a three-roll grinder and grind it f...

Embodiment 2

[0041] The preparation method of the water-based graphene conductive ink of the present embodiment may further comprise the steps:

[0042] (1) Heat a ceramic crucible containing 100g of expandable graphite in a microwave oven with a power of 600W for 60s, wash it with deionized water to remove the acid solution remaining in the raw material, and dry it at 90°C for 6h to obtain worm-like graphite with a volume expansion of 5.5 times ;

[0043] (2) 60g of alkyd resin, 4g of active diluent, 236g of ethanol and 600g of deionized water are dropped into the dispersion kettle, stirred to make it completely swell and dissolve, and obtain a water-based polymer resin slurry with a viscosity of 20000Pa·s;

[0044] (3) mixing the worm-like graphite obtained in step (1) and the aqueous polymer resin slurry obtained in step (2), stirring evenly, to obtain a graphite coarse slurry;

[0045] (4) Transfer the coarse graphite slurry to a three-roll grinder and grind it fully until the particl...

Embodiment 3

[0048]The preparation method of the water-based graphene conductive ink of the present embodiment may further comprise the steps:

[0049] (1) Heat a ceramic crucible containing 100 g of expandable graphite in a microwave oven with a power of 1000 W for 20 seconds, wash it with deionized water to remove the acid solution remaining in the raw material, and dry it at 110 ° C for 4 hours to obtain worm-like graphite with a volume expansion of 4.8 times ;

[0050] (2) 60g of phenolic resin, 4g of active diluent, 136g of butanol and 700g of deionized water are dropped into the dispersion kettle, stirred to make it completely swell and dissolve, and to obtain a water-based polymer resin slurry with a viscosity of 12000Pa·s;

[0051] (3) mixing the worm-like graphite obtained in step (1) and the aqueous polymer resin slurry obtained in step (2), stirring evenly, to obtain a graphite coarse slurry;

[0052] (4) Transfer the coarse graphite slurry to a three-roll grinder and grind it ...

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Abstract

The embodiment of the invention discloses a water-based graphene conductive ink and a preparation method thereof, and belongs to the technical field of printed electronic materials. The water-based graphene conductive ink is prepared from the following raw materials in percentage by weight: 0.1 to 30 percent of expandable graphite, 0.5 to 15.4 percent of water-based polymer resin, 0.1 to 30 percent of an auxiliary agent and 30 to 97.4 percent of a solvent. The water-based graphene conductive ink has remarkable advantages in the aspect of conductivity, the conductivity can reach up to 1.87 * 10< 4 > to 3.79 * 10 < 4 > S/m, and the water-based graphene conductive ink further has the advantages of being light in printed pattern mass, good in printing adaptability, mild in curing condition, low in cost and the like. Meanwhile, the raw materials are low in price and harmless and non-toxic to human bodies and the environment, the requirements of ecological friendliness and sustainable development are met, and industrial production is met.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of printed electronic materials, in particular to a water-based graphene conductive ink and a preparation method thereof. Background technique [0002] Printed electronics are electronic devices and circuits made by printing technology, and are developing in the direction of flexibility, low cost and high performance. The traditional preparation processes of electronic devices mainly include photolithography, vacuum deposition and chemical plating. These methods have many steps, high equipment costs, and pollute the environment. [0003] In recent years, with the development of material science and technology, new electronic printing technology is also constantly improving. The substrates of flexible printed circuits are not limited to plastic substrates. Paper, textiles, silicone rubber and ultra-thin glass can all be used for flexible electronic devices. fabrication and coating o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/52C09D11/03C09D11/103C09D11/105C09D11/0235C09D11/38C09D11/30
CPCC09D11/52C09D11/03C09D11/103C09D11/105C09D11/0235C09D11/38C09D11/30
Inventor 杨亚敏秦显营罗丹李宝华
Owner 深圳石墨烯创新中心有限公司
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