CN111269641A - Conductive coating steel plate and manufacturing method thereof - Google Patents
Conductive coating steel plate and manufacturing method thereof Download PDFInfo
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- CN111269641A CN111269641A CN202010071588.5A CN202010071588A CN111269641A CN 111269641 A CN111269641 A CN 111269641A CN 202010071588 A CN202010071588 A CN 202010071588A CN 111269641 A CN111269641 A CN 111269641A
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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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
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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
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09D127/14—Homopolymers or copolymers of vinyl fluoride
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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
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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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
- C09D179/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09D161/00 - C09D177/00
- C09D179/02—Polyamines
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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
- C09D5/002—Priming 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- 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
- C09D7/65—Additives macromolecular
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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
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- 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
- C08K2201/011—Nanostructured additives
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Abstract
A conductive coating steel plate comprises a substrate, a passivation layer and a front coating, wherein the front coating comprises a primer and a finish, the finish is a composite coating formed by one of a polyester coating or a polyvinyl fluoride coating and a nano graphene polyaniline compound, and the mixing ratio of the primer to the finish is 1: 1-2.5, the thickness of the coating is 8-35 μm; the primer is a composite coating formed by one of epoxy resin, polyurethane or epoxy modified polyurethane and a nano graphene polyaniline compound, and the mixing ratio of the epoxy resin, the polyurethane or the epoxy modified polyurethane to the nano graphene polyaniline compound is 1: 1-2, and the thickness of the coating is 5-10 μm. Compared with the prior art, the sulfuric acid oxidized nano graphene can effectively improve the conductivity of polyaniline, and simultaneously, after the sulfuric acid oxidized nano graphene is mixed with other coating ingredients, the conductivity is ensured, and the corrosion resistance of a coated steel plate is also ensured.
Description
Technical Field
The invention belongs to the technical field of color coated steel plates, and particularly relates to a conductive coated steel plate and a manufacturing method thereof.
Background
With the wide popularization of the application of color-coated sheets, some color-coated sheet products with special functions are more and more concerned and demanded by users, and the conductive coating steel plate is an important variety.
The conductive coating steel plate is mainly applied to the internal decoration of electronic assembly factories, electronic control cabinets, electronic product cabinet covers and flammable and explosive places.
Most of color plates produced in China at present are common polyester color-coated plates, the varieties are single, the special functional color plates are lacked, and particularly the color-coated plates with low surface resistance are lacked.
1) The color plate has an antistatic function, but the surface resistance is large. For example: patent document No. cn201220141642.x discloses an antistatic color-coated sheet, which is prepared by coating a chemical conversion layer on the upper and lower surfaces of a galvanized sheet, respectively, coating a paint layer on the chemical conversion layer, coating an anti-corrosion layer between the chemical conversion layer and the paint layer on the upper and lower surfaces of the color-coated sheet, respectively, and coating a conductive composite coating on the paint layer, but the surface resistance is high.
2) The common color-coated sheet has good corrosion resistance, but the surface electron is extremely high and is not conductive. Most of the current architectural color-coated sheets are of this type.
3) The paint has a conductive function, but the conductive unit in the paint coating is heavy metal powder such as copper, silver and the like, so that the cost is high, and the paint is not beneficial to environmental protection. For example: the patent document CN200910037660.6 discloses a water-based conductive coating, a preparation method and an application thereof, and the invention patent discloses a water-based conductive coating, which comprises the following components in percentage by mass: 15-25% of sulfonated polyester, 35-50% of deionized water or purified water, 5-8% of cellulose, 0.3-0.8% of ethylamine, 3-8% of butyl cellosolve, 20-45% of flake silver powder or silver-coated copper powder and 0.3-1% of polyurea solution; the hydrophilic modification of the product to the silver-coated copper powder is completely dissolved in the whole resin system, and the dried and solidified resin is in a three-dimensional network structure to form a three-dimensional structure of a conductive powder medium, so that the water-based conductive coating has better conductive effect than the traditional solvent type.
Therefore, a color coated sheet with better surface conductivity is needed to meet the special requirements of users.
Disclosure of Invention
The invention provides a conductive coating steel plate and a manufacturing method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a conductive coating steel plate comprises a substrate, a passivation layer and a front coating, wherein the front coating comprises a primer and a finish, the finish is a composite coating formed by one of a polyester coating or a polyvinyl fluoride coating and a nano graphene polyaniline compound, and the mixing ratio of the primer to the finish is 1: 1-2.5, the thickness of the coating is 8-35 μm;
the primer is a composite coating formed by one of epoxy resin, polyurethane or epoxy modified polyurethane resin and a nano graphene polyaniline compound, and the mixing ratio of the epoxy resin to the polyurethane or epoxy modified polyurethane resin is 1: 1-2, and the thickness of the coating is 5-10 μm.
The nano graphene polyaniline compound is a mixed solution formed by pre-mixing nano graphene and polyaniline resin after the nano graphene is oxidized by sulfuric acid, the nano graphene is nano graphene with the thickness of 0.7-1.2 nm and the sheet diameter of 1-5 mu m, the added weight percentage is 1-8%, the weight percentage of polyaniline is 40-60%, and the balance is N-methyl pyrrolidone.
The passivation layer adopts chromate passivation solution, and the weight of the passivation coating is 25 +/-3 mg/m2。
The back coating can use polyester resin paint, epoxy modified polyester paint or epoxy resin paint in the prior art.
The substrate is a hot-dip galvanized steel sheet, a hot-dip galvanized aluminum steel sheet, a hot-dip aluminum zinc steel sheet or a zinc-aluminum-magnesium alloy coated steel sheet.
A method for manufacturing an electrically conductive coated steel sheet, comprising the method steps of:
1) carrying out degreasing, rinsing, surface conditioning and rinsing on the substrate;
2) passivating and drying the surface of the substrate: the passivation solution is used to adjust the coating roller speed and the coating roller pressure of the chemical coating machine, so that the single-side weight of the passivated coating layer after passivation and drying is controlled to be 25 +/-3 mg/m2；
3) Preparing a nano graphene polyaniline compound: preparing a solution with the weight percentage of 30% +/-3% by adding concentrated sulfuric acid and deionized water, adding the sulfuric acid solution into nano graphene to fully wet the graphene, then putting the nano graphene into an oven with the temperature of 120 +/-5 ℃ for dehydration for 50-80 min, putting the dried graphene into N methyl pyrrolidone for high-speed dispersion for 20-30 min, and adding polyaniline resin for uniform stirring for later use, wherein the dispersion rotation speed is 5000-6000 rpm;
3) premixing front primer and front finish: according to the proportion, the nano graphene polyaniline composite material is respectively and fully mixed with the finish paint ingredient and the primer paint ingredient and uniformly stirred at a low speed, the stirring speed is controlled to be 200-300 rpm, the stirring time is 20-30 min, and then the mixture is adjusted to the viscosity of 35-55 s (coating an IV cup) by using a diluent for later use;
4) coating a front primer, baking and curing, and controlling the temperature of a baking plate to be 200-280 ℃;
5) coating front surface finish paint and back surface finish paint, baking and curing, and controlling the baking plate temperature at 200-280 ℃;
6) cooling, coiling, packaging, inspecting and warehousing.
Compared with the prior art, the invention has the beneficial effects that:
compared with the prior art, the sulfuric acid oxidized nano graphene can effectively improve the conductivity of polyaniline, and simultaneously, after the sulfuric acid oxidized nano graphene is mixed with other coating ingredients, the conductivity is ensured, and the corrosion resistance of a coated steel plate is also ensured. The conductive performance of the color-coated sheet is effectively improved through the scheme, and meanwhile, the corrosion resistance of the color-coated sheet is not reduced.
Detailed Description
The following examples are provided to further illustrate the embodiments of the present invention:
the processing techniques such as the structure of the finish coating and the addition amount of graphene in the examples are shown in table 1. The results of the performance tests are shown in Table 2.
TABLE 1 color plate front surface coating treatment process parameter table
TABLE 2 color coated sheet Performance test results
The data in tables 1 and 2 show that the color-coated sample plates of examples 2-5 have good corrosion resistance and conductivity, so that the solutions of examples 2 and 5 are recommended in practical operation.
Claims (6)
1. The conductive coating steel plate comprises a substrate, a passivation layer and a front coating, and is characterized in that the front coating comprises a primer and a finish, wherein the finish is a composite coating formed by one of a polyester coating or a polyvinyl fluoride coating and a nano graphene polyaniline compound, and the volume ratio of the polyester coating or the polyvinyl fluoride coating mixed with the nano graphene polyaniline compound is 1: 1-2.5, the thickness of the coating is 8-35 μm;
the primer is a composite coating formed by one of epoxy resin, polyurethane or epoxy modified polyurethane resin and the nano graphene polyaniline compound, and the volume ratio of the epoxy resin, the polyurethane or the epoxy modified polyurethane resin to the nano graphene polyaniline compound is 1: 1-2, and the thickness of the coating is 5-10 μm.
2. The conductive coating steel plate of claim 1, wherein the nano graphene polyaniline composite is a mixed solution formed by pre-mixing nano graphene and polyaniline resin after sulfuric acid oxidation, the nano graphene is nano graphene with a layer thickness of 0.7nm-1.2nm and a sheet diameter of 1 μm-5 μm, the added weight percentage is 1% -8%, the weight percentage of polyaniline is 40% -60%, and the balance is N-methylpyrrolidone.
3. The electrically conductive coated steel sheet according to claim 1, wherein said passivation layer is a chromate passivation solution having a passivation coating weight of 25 ± 3mg/m2。
4. The conductively coated steel sheet of claim 1, further comprising a back coating layer, wherein the back coating layer is formed using a polyester resin coating, an epoxy-modified polyester coating, or an epoxy resin coating.
5. The conductively coated steel sheet of claim 1, wherein the substrate is a hot-dip galvanized steel sheet, a hot-dip galvanized aluminum sheet, a hot-dip aluminum-zinc sheet, or a zinc-aluminum-magnesium alloy coated steel sheet.
6. A method of manufacturing an electrically conductive coated steel sheet according to any one of claims 1 to 5, comprising the method steps of:
1) carrying out degreasing, rinsing, surface conditioning and rinsing on the substrate;
2) passivating and drying the surface of the substrate: the weight of the passive involucra is 25 +/-3 mg/m2；
3) Preparing a nano graphene polyaniline compound: preparing a solution with the weight percentage of 30% +/-3% by adding concentrated sulfuric acid and deionized water, adding the sulfuric acid solution into nano graphene to fully wet the graphene, then putting the nano graphene into an oven with the temperature of 120 +/-5 ℃ for dehydration for 50-80 min, putting the dried graphene into N methyl pyrrolidone for high-speed dispersion for 20-30 min, and adding polyaniline resin for uniform stirring for later use, wherein the dispersion rotation speed is 5000-6000 rpm;
3) premixing front primer and front finish: according to the proportion, the nano graphene polyaniline composite material is respectively and fully mixed with the finish paint ingredient and the primer paint ingredient and uniformly stirred at a low speed, the stirring speed is controlled to be 200-300 rpm, the stirring time is 20-30 min, and then the mixture is adjusted to have the viscosity of 35-55 s by using a diluent for later use;
4) coating a front primer, baking and curing, and controlling the temperature of a baking plate to be 200-280 ℃;
5) coating front surface finish paint and back surface finish paint, baking and curing, and controlling the baking plate temperature at 200-280 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010071588.5A CN111269641A (en) | 2020-01-21 | 2020-01-21 | Conductive coating steel plate and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010071588.5A CN111269641A (en) | 2020-01-21 | 2020-01-21 | Conductive coating steel plate and manufacturing method thereof |
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| CN111269641A true CN111269641A (en) | 2020-06-12 |
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| CN202010071588.5A Pending CN111269641A (en) | 2020-01-21 | 2020-01-21 | Conductive coating steel plate and manufacturing method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111732849A (en) * | 2020-06-23 | 2020-10-02 | 西南石油大学 | VPC nano composite material with self-repairing performance and preparation method of coating thereof |
| CN112029394A (en) * | 2020-08-04 | 2020-12-04 | 航天材料及工艺研究所 | Composition for forming magnesium-lithium alloy surface anticorrosive coating system and preparation method of anticorrosive coating system |
| CN113956772A (en) * | 2021-12-06 | 2022-01-21 | 深圳市润麒麟科技发展有限公司 | Graphene antistatic and anticorrosive coating and preparation method thereof |
| CN115286980A (en) * | 2022-08-04 | 2022-11-04 | 苏州市朴力冭材料科技有限公司 | Solvent-free high-molecular antistatic conductive coating and application thereof |
| CN116612913A (en) * | 2023-06-26 | 2023-08-18 | 德瑞宝(中国)复合材料有限公司 | Polymer conductive composite material and production method thereof |
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| CN104072764A (en) * | 2014-07-08 | 2014-10-01 | 南京邮电大学 | Preparation method of polyaniline-graphene composite material |
| CN104592857A (en) * | 2014-12-30 | 2015-05-06 | 安科智慧城市技术（中国）有限公司 | Graphene modified polyaniline conductive coating and preparation method thereof |
| CN105400373A (en) * | 2015-12-16 | 2016-03-16 | 常州大学 | Graphene/deimpurity polyaniline-containing anticorrosive coating and preparation method thereof |
| CN110054924A (en) * | 2019-04-02 | 2019-07-26 | 鞍钢股份有限公司 | A kind of high anti-corrosion steel plate with antistatic colored coatings and its manufacturing method |
-
2020
- 2020-01-21 CN CN202010071588.5A patent/CN111269641A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104072764A (en) * | 2014-07-08 | 2014-10-01 | 南京邮电大学 | Preparation method of polyaniline-graphene composite material |
| CN104592857A (en) * | 2014-12-30 | 2015-05-06 | 安科智慧城市技术（中国）有限公司 | Graphene modified polyaniline conductive coating and preparation method thereof |
| CN105400373A (en) * | 2015-12-16 | 2016-03-16 | 常州大学 | Graphene/deimpurity polyaniline-containing anticorrosive coating and preparation method thereof |
| CN110054924A (en) * | 2019-04-02 | 2019-07-26 | 鞍钢股份有限公司 | A kind of high anti-corrosion steel plate with antistatic colored coatings and its manufacturing method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111732849A (en) * | 2020-06-23 | 2020-10-02 | 西南石油大学 | VPC nano composite material with self-repairing performance and preparation method of coating thereof |
| CN111732849B (en) * | 2020-06-23 | 2022-02-08 | 西南石油大学 | VPC nano composite material with self-repairing performance and preparation method of coating thereof |
| CN112029394A (en) * | 2020-08-04 | 2020-12-04 | 航天材料及工艺研究所 | Composition for forming magnesium-lithium alloy surface anticorrosive coating system and preparation method of anticorrosive coating system |
| CN112029394B (en) * | 2020-08-04 | 2022-03-04 | 航天材料及工艺研究所 | Composition for forming magnesium-lithium alloy surface anticorrosive coating system and preparation method of anticorrosive coating system |
| CN113956772A (en) * | 2021-12-06 | 2022-01-21 | 深圳市润麒麟科技发展有限公司 | Graphene antistatic and anticorrosive coating and preparation method thereof |
| CN115286980A (en) * | 2022-08-04 | 2022-11-04 | 苏州市朴力冭材料科技有限公司 | Solvent-free high-molecular antistatic conductive coating and application thereof |
| CN115286980B (en) * | 2022-08-04 | 2023-08-04 | 朴力氏(浙江)半导体材料有限公司 | Solvent-free high-molecular antistatic conductive coating and application thereof |
| CN116612913A (en) * | 2023-06-26 | 2023-08-18 | 德瑞宝(中国)复合材料有限公司 | Polymer conductive composite material and production method thereof |
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