CN110964358A - Conductive coating and preparation method thereof - Google Patents
Conductive coating and preparation method thereof Download PDFInfo
- Publication number
- CN110964358A CN110964358A CN201911200843.5A CN201911200843A CN110964358A CN 110964358 A CN110964358 A CN 110964358A CN 201911200843 A CN201911200843 A CN 201911200843A CN 110964358 A CN110964358 A CN 110964358A
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- parts
- conductive
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- coating
- graphene
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/12—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain a coating with specific electrical properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
- B05D7/586—No clear coat specified each layer being cured, at least partially, separately
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/47—Levelling agents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention discloses a conductive coating and a preparation method thereof, and the preparation method comprises the following steps: the conductive layer comprises the following components in parts by weight: 2-6 parts of porous ceramic, 2-5 parts of graphene, 45-60 parts of epoxy resin, 4-8 parts of dispersing agent, 5-9 parts of thickening agent, 1-3 parts of flatting agent, 0.5-3 parts of coupling agent, 1-3 parts of defoaming agent and 20-40 parts of solvent. The graphene is used as a conductive main body, and compared with the conventional silver conductive slurry, the cost is lower; by adopting N, N-methylene bisacrylamide as a cross-linking agent, graphene can be better bonded on the surface of a ceramic matrix, and the problem of adhesion of graphene on the surface of the matrix is solved.
Description
Technical Field
The invention belongs to the technical field of conductive materials, relates to a conductive coating and a preparation method thereof
Background
The conductive coating is a functional material which appears along with the rapid development of the coating industry and the modern industry in recent years, and is a coating with certain capacity of conducting current and dissipating static charge. In order to make it have conductivity, the common processing method mainly includes the conductive coating made of conductive polymer as film-forming material, or the conductive material is added on the basis of high molecular polymer, and the conductive action of the conductive material is utilized to achieve the purpose, so that it not only has the conductive function, but also has many excellent characteristics of high molecular polymer, and can regulate the electrical and mechanical properties of the coating according to the use requirement in a large range, and its cost is low, and it is simple and easy to implement, so it can be widely used.
As a novel carbon material, graphene has high electrical conductivity and high thermal conductivity, theoretically, the electron mobility can reach 2 x 105cm 2/V.s, which is about 140 times of that in silicon and 20 times of that in gallium arsenide, the temperature stability is high, theoretically, the electrical conductivity can reach 108S/m, and the graphene is lower than copper and silver and is the best material for conducting electricity at room temperature. The graphene is used as a conductive phase (conductive filler) in the conductive paste, so that the cost of the conductive paste can be reduced. However, the adhesion between the coating made of the current graphene conductive slurry and the ceramic surface is generally insufficient.
Disclosure of Invention
The invention aims to provide a conductive coating, which solves the problem that the bonding force between a coating prepared from graphene conductive slurry and the surface of ceramic is insufficient in the prior art.
The technical scheme adopted by the invention is that the conductive coating comprises: the conductive layer comprises the following components in parts by weight: 2-6 parts of porous ceramic, 2-5 parts of graphene, 45-60 parts of epoxy resin, 4-8 parts of dispersing agent, 5-9 parts of thickening agent, 1-3 parts of flatting agent, 0.5-3 parts of coupling agent, 1-3 parts of defoaming agent and 20-40 parts of solvent.
The invention is also characterized in that:
the coupling agent is gamma-aminopropyl triethoxysilane.
The leveling agent is a mixed solution formed by mixing polyether modified polydimethylsiloxane copolymer and polyacrylate according to the volume ratio of 3: 1.
The solvent is a mixed solution formed by mixing trichloromethane and methanol according to the volume ratio of 5: 1.
Another object of the present invention is to provide a method for preparing a conductive coating.
The invention adopts another technical scheme that a preparation method of a conductive coating comprises the following steps:
step 1, coating a cross-linking layer and a conducting layer on a substrate in sequence, and respectively carrying out curing treatment;
and 2, coating the cross-linking layer and the conductive layer on the conductive layer in sequence, respectively carrying out curing treatment, and repeating the step 2 to obtain the conductive coating.
The invention has the beneficial effects that: the conductive coating takes the graphene as a conductive main body, and compared with the conventional silver conductive slurry, the conductive coating is cheaper in cost; by adopting N, N-methylene bisacrylamide as a cross-linking agent, graphene can be better bonded on the surface of a ceramic matrix, and the problem of adhesion of graphene on the surface of the matrix is solved.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
An electrically conductive coating, comprising: the conductive layer comprises the following components in parts by weight: 2-6 parts of porous ceramic, 2-5 parts of graphene, 45-60 parts of epoxy resin, 4-8 parts of dispersing agent, 5-9 parts of thickening agent, 1-3 parts of flatting agent, 0.5-3 parts of coupling agent, 1-3 parts of defoaming agent and 20-40 parts of solvent.
The coupling agent is gamma-aminopropyl triethoxysilane.
The leveling agent is a mixed solution formed by mixing polyether modified polydimethylsiloxane copolymer and polyacrylate according to the volume ratio of 3: 1.
The solvent is a mixed solution formed by mixing trichloromethane and methanol according to the volume ratio of 5: 1.
A method of preparing a conductive coating comprising the steps of:
step 1, coating a cross-linking layer and a conducting layer on a substrate in sequence, and respectively carrying out curing treatment;
and 2, coating the cross-linking layer and the conductive layer on the conductive layer in sequence, respectively carrying out curing treatment, and repeating the step 2 to obtain the conductive coating.
Example 1
Step 1, coating N, N-methylene bisacrylamide on a substrate, and carrying out curing treatment; mixing polyether modified polydimethylsiloxane copolymer and polyacrylate according to a volume ratio of 3:1 to obtain a mixture, mixing 6 parts of porous ceramic, 5 parts of graphene, 60 parts of epoxy resin, 4 parts of dispersing agent, 5 parts of thickening agent, 1 part of mixing agent, 3 parts of gamma-aminopropyltriethoxysilane, 3 parts of defoaming agent and 20 parts of mixed solution of trichloromethane and methanol to obtain a conductive material, coating the conductive material on the upper surface of N, N-methylene-bisacrylamide to form a conductive layer, and performing curing treatment;
and 2, coating the cross-linking layer and the conductive layer on the conductive layer in sequence, respectively carrying out curing treatment, and repeating the step 2 to obtain the conductive coating.
Example 2
Step 1, coating N, N-methylene bisacrylamide on a substrate, and carrying out curing treatment; mixing polyether modified polydimethylsiloxane copolymer and polyacrylate according to a volume ratio of 3:1 to obtain a mixture, mixing 4 parts of porous ceramic, 3 parts of graphene, 50 parts of epoxy resin, 7 parts of dispersing agent, 6 parts of thickening agent, 2 parts of mixing agent, 2 parts of gamma-aminopropyltriethoxysilane, 2 parts of defoaming agent and 30 parts of mixed solution of trichloromethane and methanol to obtain a conductive material, coating the conductive material on the upper surface of N, N-methylene-bisacrylamide to form a conductive layer, and performing curing treatment;
and 2, coating the cross-linking layer and the conductive layer on the conductive layer in sequence, respectively carrying out curing treatment, and repeating the step 2 to obtain the conductive coating.
Through the mode, the conductive coating takes the graphene as a conductive main body, and compared with the conventional silver conductive slurry, the conductive coating is cheaper in cost; by adopting N, N-methylene bisacrylamide as a cross-linking agent, graphene can be better bonded on the surface of a ceramic matrix, and the problem of adhesion of graphene on the surface of the matrix is solved.
Claims (5)
1. An electrically conductive coating, comprising: the conductive layer comprises the following components in parts by weight: 2-6 parts of porous ceramic, 2-5 parts of graphene, 45-60 parts of epoxy resin, 4-8 parts of dispersing agent, 5-9 parts of thickening agent, 1-3 parts of flatting agent, 0.5-3 parts of coupling agent, 1-3 parts of defoaming agent and 20-40 parts of solvent.
2. The conductive coating of claim 1, wherein said coupling agent is gamma-aminopropyltriethoxysilane.
3. The conductive coating of claim 1, wherein the leveling agent is a mixture of polyether modified polydimethylsiloxane copolymer and polyacrylate in a volume ratio of 3: 1.
4. The conductive coating of claim 1, wherein the solvent is a mixture of chloroform and methanol in a volume ratio of 5: 1.
5. A method for preparing a conductive coating is characterized by comprising the following steps:
step 1, coating a cross-linking layer and a conducting layer on a substrate in sequence, and respectively carrying out curing treatment;
and 2, coating the cross-linking layer and the conductive layer on the conductive layer in sequence, respectively carrying out curing treatment, and repeating the step 2 to obtain the conductive coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911200843.5A CN110964358A (en) | 2019-11-29 | 2019-11-29 | Conductive coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911200843.5A CN110964358A (en) | 2019-11-29 | 2019-11-29 | Conductive coating and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110964358A true CN110964358A (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911200843.5A Pending CN110964358A (en) | 2019-11-29 | 2019-11-29 | Conductive coating and preparation method thereof |
Country Status (1)
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106118324A (en) * | 2016-06-27 | 2016-11-16 | 上海多希石墨烯材料科技有限公司 | A kind of conductive coating materials peeling off Graphene containing physics and preparation method thereof |
| CN108305716A (en) * | 2018-01-19 | 2018-07-20 | 林荣铨 | A kind of preparation method of graphene conductive slurry and its conductive coating of preparation |
| CN109627807A (en) * | 2017-10-07 | 2019-04-16 | 佛山市洁灏环保科技有限公司 | A kind of preparation method of conductive coating |
-
2019
- 2019-11-29 CN CN201911200843.5A patent/CN110964358A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106118324A (en) * | 2016-06-27 | 2016-11-16 | 上海多希石墨烯材料科技有限公司 | A kind of conductive coating materials peeling off Graphene containing physics and preparation method thereof |
| CN109627807A (en) * | 2017-10-07 | 2019-04-16 | 佛山市洁灏环保科技有限公司 | A kind of preparation method of conductive coating |
| CN108305716A (en) * | 2018-01-19 | 2018-07-20 | 林荣铨 | A kind of preparation method of graphene conductive slurry and its conductive coating of preparation |
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Application publication date: 20200407 |
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