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Graphene zinc oxide conductive coating

A technology of zinc oxide and conductive coatings, applied in conductive coatings, epoxy resin coatings, coatings, etc., can solve the problems of short shelf life of zinc oxide conductive coatings, affecting the storage stability of conductive coatings, and weak interaction, etc., to achieve Improve storage stability, good electrical conductivity, and ensure uniformity

Inactive Publication Date: 2018-11-30
HUNAN GUOSHENG GRAPHITE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the structural characteristics of graphene itself, graphene sheets are neither hydrophilic nor lipophilic, and the sheets are easy to agglomerate due to the π-π effect, which affects the storage stability of conductive coatings added with graphene.
[0004] Zinc oxide is a common conductive filler in conductive coatings. If zinc oxide conductive filler is added to graphene conductive coatings, it will have a certain effect on preventing the accumulation and agglomeration of graphene sheets; however, due to the lack of interaction between zinc oxide and graphene Strong, so that the shelf life of the graphene zinc oxide conductive coating is short, it needs to be sold as soon as possible after the production is completed, and the customer needs to construct and use it as soon as possible

Method used

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  • Graphene zinc oxide conductive coating
  • Graphene zinc oxide conductive coating
  • Graphene zinc oxide conductive coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～7 and comparative example 1～3

[0038] The graphene zinc oxide conductive coating component content of embodiment 1~7 and comparative example 1~3 is as shown in table 1;

[0039] The preparation method of the graphene zinc oxide conductive coating of embodiment 1~7 and comparative example 1~3 is as follows:

[0040] S1. Ethanol, isopropanol and water are formulated into solvents, and the solvent is divided into the first solvent and the second solvent with a volume ratio of 1:3; the water-soluble acrylic resin is divided into the first water-soluble acrylic acid of equal quality Resin and the second water-soluble acrylic resin; the first solvent, the first water-soluble acrylic resin, pigment, dispersant, zinc oxide, rice straw ash, and defoamer are uniformly mixed and ground to obtain a slurry;

[0041] S2. Mix the slurry in step S1. with the second solvent, the second water-soluble acrylic resin, epoxy resin, ethylene-vinyl acetate copolymer, graphene, and leveling agent to prepare graphene zinc oxide Con...

Embodiment 1

[0059] Embodiment 1 and embodiment 6~7 compare, and as can be known, the storage stability of embodiment 1 and embodiment 7 is obviously better than embodiment 6, but the electrical conductivity of embodiment 7 is slightly weaker than embodiment 6, generally speaking, implementation Example 1 and Example 7 are better than Example 6, so the performance of the graphene zinc oxide conductive coating obtained when the content of rice stalk plant ash is 4%~5% is better. Wherein the conductive property of embodiment 1 is better than embodiment 7, so the performance of the graphene zinc oxide conductive paint that makes when the content of rice stalk plant ash is 4% improves further.

[0060] And in the graphene conductive paint of comparative example 1, do not add rice straw plant ash, the storage stability of the graphene zinc oxide conductive paint that makes is relatively poor; Less than 3%, the storage stability of the prepared graphene zinc oxide conductive coating has not been...

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Abstract

The invention discloses a graphene zinc oxide conductive coating including the following components by the mass percentage: 20%-35% of water-soluble acrylic resin, 5%-8% of epoxy resin, 4%-6% of ethanol, 4%-6% of isopropanol, 2%-3% of an ethylene-vinyl acetate copolymer, 5%-12% of graphene, 5%-8% of zinc oxide, 3%-5% of rice straw plant ash, 0%-5% of a pigment, 1.0%-3.0% of a dispersant, 0.1%-1.0%of a defoamer, 0.1%-1.0% of leveling agent, and 25%-40% of water. The rice straw plant ash is prepared by completely burning sun-dried rice straw and removing water-soluble salts. A specific contentof rice straw plant ash is added to a graphene zinc oxide conductive coating, and the prepared graphene zinc oxide conductive coating has the advantages of good storage stability and long shelf life and can keep good electrical conductivity.

Description

technical field [0001] The invention relates to the technical field of conductive coatings, more specifically, to a graphene zinc oxide conductive coating. Background technique [0002] When coated on objects with high resistivity, conductive coatings have the functions of conducting current, eliminating accumulated static charges and electromagnetic shielding. They occupy an important position in the field of information and electronics and are widely used in aviation, aerospace, electronic computers, measurement and Control systems, communication equipment, medical equipment, automotive industry, sensors, civilian electronic products and many other fields. [0003] Graphene has good electrical conductivity, and the addition of graphene can effectively improve the electrical conductivity of the material. However, due to the structural characteristics of graphene itself, graphene sheets are neither hydrophilic nor lipophilic, and the sheets are easy to agglomerate due to th...

Claims

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Application Information

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IPC IPC(8): C09D5/24C09D133/00C09D163/00C09D7/65C09D7/61C09D7/20
CPCC08K2003/2296C08K2201/001C08L2201/04C08L2205/03C09D5/24C09D7/20C09D7/61C09D7/65C09D133/00C08L63/00C08L23/0853C08K3/22C08K3/042C08K3/04
Inventor 林前锋
Owner HUNAN GUOSHENG GRAPHITE TECH CO LTD
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