CN110845939A - Epoxy primer resistant to corrosion of oxidizing disinfectant, modified polyester finish, color-coated steel plate and manufacturing process of color-coated steel plate - Google Patents
Epoxy primer resistant to corrosion of oxidizing disinfectant, modified polyester finish, color-coated steel plate and manufacturing process of color-coated steel plate Download PDFInfo
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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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- 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
- 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
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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
- C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
- C09D5/084—Inorganic compounds
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- 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
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/103—Anti-corrosive paints containing metal dust containing Al
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- 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
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/106—Anti-corrosive paints containing metal dust containing Zn
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/68—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous solutions with pH between 6 and 8
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/19—Iron or steel
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/024—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously by a combination of dipping and spraying
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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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Abstract
The invention discloses an epoxy primer resistant to corrosion of an oxidizing disinfectant, a modified polyester finish, a color-coated steel plate and a manufacturing process of the color-coated steel plate, and belongs to the field of surface treatment of metal materials. The epoxy primer mainly comprises epoxy resin, coloring pigment, antirust pigment, a flatting agent, a wetting agent, a defoaming agent and a film-forming assistant; the modified polyester finish paint mainly comprises first saturated polyester, second modified saturated polyester, a coloring pigment, a leveling agent, a wetting agent, a defoaming agent and a special medium corrosion resistant auxiliary agent; the color-coated steel plate comprises a substrate and is characterized in that: the front surface of the substrate is sequentially coated with a first protective film and an epoxy primer layer from bottom to top, and the epoxy primer layer is also coated with a modified polyester finish paint layer; the back surface of the substrate is sequentially coated with a second protective film and an epoxy back paint layer from top to bottom, wherein the main component of the epoxy back paint layer is epoxy resin; the manufacturing process of the color-coated steel plate comprises the steps of cleaning, passivating, coating front and back primers, curing, coating front and back finishes, curing, cooling, inspecting and coiling.
Description
Technical Field
The invention belongs to the field of surface treatment of metal materials, and relates to a production process of a low-carbon steel color precoated steel plate, in particular to a functional color coated steel plate resistant to oxidation disinfectant corrosion and a manufacturing method thereof.
Background
With the development of color coated steel plate production, processing and application technology, the variety and structure of color coated steel plates for the enclosure of various industrial plants are also continuously optimized and upgraded. In the special fields of medical treatment and health, food processing and the like, mass production workshops are newly built or modified every year, and the demand for color coated steel plates exceeds 5 million tons per year. However, in these special industries, due to the high requirements for environmental bacteria breeding and cleanliness control, a workshop or an office area and the like need to be disinfected and sterilized by using disinfectants such as hydrogen peroxide, sodium hypochlorite and the like regularly, so that the building enclosure system of the building is in long-term contact with strong oxidants, and therefore, more severe requirements are provided for materials for maintenance systems. The performance of the common polyester color-coated steel plate used in large quantity at present in the aspects of hydrogen peroxide resistance and other disinfectants cannot meet the actual environmental requirement, and under the condition, the surface of the common polyester color-coated steel plate used for three to five years generally has bubbling, pulverization and damage, thus the service life of indoor buildings is seriously influenced. In addition, some enterprises can select fluorocarbon coatings and even stainless steel plates to replace common polyester color-coated steel plates in order to ensure the product performance, thereby bringing about great increase in cost. Based on the method, the special-function color-coated steel plate for the disinfectant resistance is manufactured by improving the coating components in the pre-coating and controlling the production process so as to meet the requirements of the current market.
Through retrieval, a patent application with the Chinese patent application number of 201420441214.8 and the application publication date of 2014, 08 and 06 discloses a VHP oxidation resistant color-coated plate for a pharmaceutical workshop. The patent mainly introduces a production process of an atomization-resistant hydrogen peroxide solution color steel plate. The steel plate coating and coating structure comprises: the galvanized sheet, the first passivation layer, the anti VHP oxidation precoat, the anti VHP fine oxide coating, the second passivation layer, the anti VHP back coating that oxidizes. The scheme is improved through the color-coated sheet, so that the steel sheet has good bending processing performance and VHP oxidation resistance, and the coating has good adhesive force in a gasified hydrogen peroxide environment, does not lose luster, does not pulverize and crack, and does not have a foaming phenomenon. However, in the field of medical hygiene, most indoor disinfection adopts hydrogen peroxide, and sodium hypochlorite is still used as one of the main components of the disinfectant. In this case, the color steel plate mentioned in the patent does not satisfy this special requirement, and the color steel plate mentioned in the patent not only has strong resistance to hydrogen peroxide solution (especially 30% high concentration hydrogen peroxide solution), but also can effectively resist sodium hypochlorite corrosion damage. In addition, the product has good acid and alkali resistance and high-temperature and high-humidity performance, can meet the actual use requirements of more places, and belongs to a personalized and functional color coating product with strong competitiveness.
For another example, a patent application with chinese patent application No. 201710123403.9 and published as 2017, 06, 30 discloses a method for manufacturing a corrosion-resistant, acid-resistant, and alkali-resistant colored sheet. The manufacturing method of the patent comprises the following steps: step 1, pretreatment: the method comprises the following steps of (1) taking a galvanized steel plate or an aluminum-zinc plated steel plate as a substrate, and performing surface pretreatment, namely degreasing and cleaning; step 2, primary coating: the pretreated strip steel enters a chemical coating machine, a layer of water-based chromium compound is coated on the surface of the strip steel, and then the strip steel enters a roller coating machine for primary coating: the front primer is high-corrosion-resistant polyurethane primer, and the back primer is high-corrosion-resistant epoxy primer; step 3, fine coating: the primarily coated strip steel enters a finish coating machine through a turning roll for finish coating: the method relies on the volume-produced nano particles in the front and back coatings, and achieves a nano state through a grinding process, the superfine nano particles effectively eliminate the gap defect caused by aggregates with large particle size, the hot-melt self-repairing material eliminates solvent channels in the conventional coating, and the super-strong sealing capability and acid and alkali resistance are formed, so that the service life of the color plate is prolonged. However, the products have the advantages of strong acid and alkali resistance, but the corrosion resistance of strong oxidizing agents such as hydrogen peroxide, sodium hypochlorite and the like is not involved. Therefore, there is a need to develop a color coated steel sheet resistant to corrosion by oxidizing disinfectants and a manufacturing process thereof, which not only has good protection against oxidizing disinfectants and other corrosive media, but also has acid and alkali resistance and high temperature and high humidity performance.
Disclosure of Invention
1. Problems to be solved
Aiming at the problem that the existing color-coated steel plate cannot meet the corrosion resistance of a strong oxidant, the invention provides an epoxy primer resistant to the corrosion of an oxidizing disinfectant and a modified polyester finish resistant to the corrosion of the oxidizing disinfectant, wherein the epoxy primer and the modified polyester finish are matched to form the color-coated steel plate resistant to the corrosion of the oxidizing disinfectant, and the color-coated steel plate resistant to the corrosion of the oxidizing disinfectant is obtained by improving coating components in a coating layer on the color-coated steel plate.
The invention also provides a manufacturing process of the color coated steel plate resistant to the corrosion of the oxidizing disinfectant, and aims to control the production process to manufacture the color coated steel plate resistant to the corrosion of the oxidizing disinfectant
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
An epoxy primer resistant to oxidation disinfectant corrosion mainly comprises epoxy resin, coloring pigment, antirust pigment, a flatting agent, a wetting agent, a defoaming agent and a film-forming assistant, wherein the epoxy primer comprises the following components in parts by weight:
furthermore, the epoxy resin is a polyol resin, preferably a building epoxy resin, wherein the polyol resin is synthesized by adopting bisphenol A, epichlorohydrin, liquid alkali and an additive, and has the characteristics of good adhesion and excellent processing toughness.
Furthermore, the main component of the coloring pigment comprises titanium dioxide, zinc white and a small amount of red, yellow and carbon black pigments.
Further, the rust preventive pigment includes a chemical rust preventive pigment and/or a physical rust preventive pigment, wherein the chemical rust preventive pigment includes zinc powder or zinc chrome yellow, and the physical rust preventive pigment includes aluminum powder, and when the chemical rust preventive pigment and the physical rust preventive pigment are mixed for use, the addition mass ratio of the two is 3: 2.
A modified polyester finish paint resisting corrosion of an oxidizing disinfectant mainly comprises first saturated polyester, second modified saturated polyester, a coloring pigment, a leveling agent, a wetting agent, a defoaming agent and a special medium corrosion resistant auxiliary agent, wherein the modified polyester finish paint comprises the following components in parts by weight:
furthermore, the main components of the second modified saturated polyester are melamine, isocyanate, fine film-forming particles, hindered amine and common polyester, and the common polyester is matched with other components to form the modified polyester with strong compactness and excellent weather resistance.
Furthermore, the main component of the coloring pigment comprises titanium dioxide, zinc white and a small amount of red, yellow and carbon black pigments.
Further, the medium corrosion resistant special auxiliary agent mainly comprises propylene glycol phenyl ether, ester alcohol, an oxidation resistant auxiliary agent and a fluorine-containing surfactant.
The color-coated steel plate resistant to the corrosion of the oxidizing disinfectant comprises a substrate, wherein a first protective film and an epoxy primer layer are sequentially coated on the front surface of the substrate from bottom to top, and a modified polyester finish paint layer is further coated on the epoxy primer layer; the back of base plate from top to bottom coats in proper order has second protection film and epoxy back paint layer.
Further, the substrate is a hot-dip galvanized steel sheet.
Further, the coating weight of the hot-dip galvanized steel sheet was 120g/m2。
Further, the steel plate in the hot-dip galvanized steel plate comprises the following main chemical components in percentage by weight: c: less than or equal to 0.20 percent; si: less than or equal to 0.05 percent; mn: less than or equal to 1.30 percent; p: less than or equal to 0.02 percent; s: less than or equal to 0.02 percent; al: less than or equal to 0.07 percent.
Further, the thickness of the first protective film and the second protective film is controlled to be 50-100 mg/m of the weight of the single-side film under the general condition2。
Further, the thickness of the epoxy primer layer is 5-7 μm.
Further, the thickness of the modified polyester finish paint layer is 15-17 mu m.
Further, the thickness of the epoxy back paint layer is 5-12 mu m.
A manufacturing process of a color coated steel plate resistant to the corrosion of an oxidizing disinfectant comprises the following steps: firstly cleaning the surface of a substrate, passivating the cleaned surface of the substrate to generate a first protective film and a second protective film on the surface of the substrate for slowing down the corrosion of the substrate and enhancing the adhesion between the substrate and a coating, coating an epoxy primer on the first protective film and coating an epoxy back paint on the second protective film, respectively forming an epoxy primer layer and an epoxy back paint layer after curing, coating a modified polyester finish paint on the epoxy primer layer, and forming a modified polyester finish paint layer after curing.
Further, the manufacturing process of the color coated steel plate resistant to the corrosion of the oxidizing disinfectant comprises the following steps:
s1, cleaning: carrying out spraying alkali washing and rinsing on the substrate with the grease to remove oil stains and impurities on the surface of the substrate so that the substrate has a clean surface;
s2, pretreatment: sending the cleaned substrate into a chemical roller coating section to carry out passivation treatment on the surface of the substrate, wherein the main components of passivation solution comprise trivalent chromium components, hexavalent chromium components, silicon dioxide and the like, the strip steel is squeezed by a squeezing roller and is passivated by the chemical roller coating section after air knife, the passivation temperature is 130 +/-10 ℃, and a first protective film and a second protective film are generated on the surface of the strip steel, so that the corrosion resistance of the substrate and the adhesion of the coating are improved, and the corrosion resistance of the substrate and the adhesion of the coating are ensured;
s3, primary coating: sending the passivated substrate into a chemical drying furnace to enable the highest tapping temperature of the substrate to be 80 ℃; then coating the front surface of the substrate with epoxy primer, coating the back surface of the substrate with epoxy back paint, then entering a primary coating curing furnace for curing to form an epoxy primer layer and an epoxy back paint layer, cooling the primarily coated substrate to below 50 ℃ after the primarily coated substrate is taken out of the furnace, and removing the moisture on the surface of the substrate through a squeezing roller and an air knife;
s4, fine coating: and (3) finely coating the modified polyester finish paint on the epoxy primer layer, then entering a fine coating curing furnace for curing to form a modified polyester finish paint layer, and cooling to obtain the color coated steel plate resistant to the corrosion of the oxidizing disinfectant.
Further, the coating process of steps S3-S4 adopts roll coating.
Further, the cooling method in the steps S3 to S4 is cooling by a water quenching device.
Further, the color coated steel sheet obtained in step S4 is subjected to inspection and coiling, wherein the inspection refers to on-line verification of the general properties of the coating, such as specific items of film thickness, color difference, T-bend, gloss, MEK, pencil hardness, etc.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) the special functional color-coated steel plate for the disinfectant is obtained by mainly improving the components of the primer and the finish of the coating of the color-coated steel plate so as to improve the compactness and the corrosion resistance of a paint film and evaluating the performances of hydrogen peroxide and sodium hypochlorite resistance, acid and alkali resistance, high temperature and high humidity resistance and the like of the color-coated steel plate, has good machining performance, can meet the actual forming requirement, has good disinfectant and other corrosive solution resistance, and is a product with strong pertinence and high comprehensive performance;
(2) the front primary coating of the color-coated steel plate is epoxy resin with high crosslinking density and good adhesiveness, and can effectively prevent solution from penetrating the coating; the front finish coating takes polyester resin as a main film forming substance, and the compactness of a paint film is improved by adding a special auxiliary agent into the front finish coating; the back coating is epoxy resin and is mainly used for foaming;
(3) the advantages of the front side epoxy primer of the present invention include mainly the following two aspects: firstly, compared with the traditional polyurethane primer, the adhesion of the primer to a substrate is improved; secondly, the coating compactness of the primer can be improved, and the chemical resistance medium corrosion capability of the primer can be effectively improved;
(4) the technical characteristics of the front modified polyester finish paint provided by the invention mainly comprise the following aspects: firstly, the second modified polyester has components capable of remarkably improving the compactness of the coating, and meanwhile, the corrosion resistance of the paint film to chemical media can be effectively improved by adding the special reinforced polyester component; secondly, the first saturated polyester and the second modified saturated polyester are reasonably matched, so that the product can still take the cost into consideration on the premise of meeting the requirements of other corrosive media such as oxidation-resistant media; thirdly, the product has obvious advantages in the aspects of hydrogen peroxide resistance, sodium hypochlorite resistance and other disinfectants by adding the targeted oxidation-resistant medium auxiliary agent into the main film forming material, and meanwhile, the paint film can be uniformly and stably formed by adding propylene glycol phenyl ether, ester alcohol and other components, so that the completeness and smoothness of the paint film are ensured;
(5) the back epoxy resin related to the invention has the advantages that the back epoxy resin has compatibility with the common back paint, the compatibility is mainly needed when the back epoxy resin and the common back paint are used for foaming, and the difference is that the back epoxy resin of the invention is added with a corrosion-resistant protection component, so that a coated plate can still have better corrosion resistance when the coated plate is not used as a sandwich plate.
Drawings
FIG. 1 shows the reaction temperature of 5% H in the comparative example2O2Soaking the color-coated steel plate for 144 hours;
FIG. 2 shows 5% H in example 12O2Soaking the color-coated steel plate for 840 hours;
FIG. 3 shows the reaction temperature of 30% H in the comparative example2O2Soaking the color-coated steel plate for 24 hours;
FIG. 4 shows 30% H in example 12O2Soaking the color-coated steel plate for 24 hours;
FIG. 5 is a color-coated steel plate in a comparative example after being soaked in 5.2% NaClO for 72 hours;
FIG. 6 is a color-coated steel plate obtained by soaking in 5.2% NaClO for 216h in example 1;
FIG. 7 is a color-coated steel plate after being soaked in 5% HCL for 24h in a comparative example;
FIG. 8 is a color-coated steel plate obtained after immersion in 5% HCl for 96 hours in example 1;
FIG. 9 is a color-coated steel sheet in a comparative example, which has been soaked in 5% NaOH for 48 hours;
FIG. 10 is a color-coated steel plate obtained by soaking in 5% NaOH for 216 hours in example 1;
FIG. 11 is a color-coated steel plate after 24 hours of high temperature resistance at 70 ℃ in example 1;
FIG. 12 is a color-coated steel sheet obtained by color-coating a steel sheet in example 1 at 40 ℃, 98% RH, 1000 hours after a humidity resistance test;
FIG. 13 is a graph showing the comparison of the performance of example 1 and comparative example after different concentrations of hydrogen peroxide are corroded;
FIG. 14 is a schematic structural view of a color coated steel sheet according to the present invention;
FIG. 15 is a scanned image of the bubble peeling site in example 1;
FIG. 16 is a bubble release site energy spectrum of example 1;
FIG. 17 is a scan of a blister peel site of a comparative example;
FIG. 18 is a graph showing the foaming peel position energy of the comparative example;
in the figure:
1. a substrate; 2. a first protective film; 3. an epoxy primer layer; 4. modifying the polyester finish paint layer; 5. a second protective film; 6. and (4) an epoxy back paint layer.
Detailed Description
The invention is further described with reference to specific embodiments and the accompanying drawings.
Table 1 shows manufacturer information and product names of raw materials used in the embodiment.
TABLE 1 raw material name and manufacturer information
Examples
The dry film compositions of an epoxy primer, a polyester topcoat and an epoxy backcoat resistant to corrosion by oxidizing disinfectants of the examples are shown in Table 2
TABLE 2 formulation of examples and comparative examples
Selecting the weight of the coating to be 120g/m2The process for producing a color-coated steel sheet using a (double-sided) hot-dip galvanized steel sheet as the color precoated substrate 1 comprises: galvanized sheet-degreasing-cleaning-passivating-front and back primer coating-solidifying-front and back primer coatingCoating, solidifying, cooling, inspecting and coiling the surface paint to prepare the color-coated steel plates of the embodiments 1 to 3 and the comparative example, wherein the film thickness of the front primer is controlled to be 5 to 7 mu m, the film thickness of the front surface paint is controlled to be 15 to 17 mu m, and the film thickness of the back surface paint is controlled to be 5 to 12 mu m.
Specifically, the manufacturing process of the color coated steel plate resistant to the corrosion of the oxidizing disinfectant in the embodiment comprises the following steps:
s1, cleaning: carrying out spraying alkaline washing and rinsing on the substrate 1 with the grease to remove oil stains and impurities on the surface of the substrate 1 so as to enable the substrate 1 to have a clean surface; the degreasing agents with different concentrations are adopted for the front and the rear sections of degreasing in the cleaning process, wherein the concentration of the first section is higher, and the degreasing strength is stronger; the concentration of the degreasing agent adopted in the second degreasing after the first degreasing is relatively low, and the main reason is that most of oil stains on the surface of the steel belt are cleaned. The main components of the degreasing agent comprise: alkaline components, phosphate, borate, carbonate, some surfactants, complexing agents and corrosion inhibitors, and the balance of water. Among them, the alkaline component may be selected from sodium hydroxide and the like according to actual requirements, and is not described herein as the invention of the present invention.
S2, pretreatment: sending the cleaned substrate 1 into a chemical roller coating section to passivate the surface of the substrate, extruding the strip steel by a drying roller and feeding the strip steel into a chemical roller coating section after air cutting, and passivating the surface of the strip steel at the passivation temperature of 130 +/-10 ℃ to generate a first protective film 2 and a second protective film 5 on the surface of the strip steel, so that the corrosion resistance of the substrate and the adhesion of the coating are improved and improved to ensure the corrosion resistance of the substrate and the adhesion of the coating; the passivation solution contains additives such as chromic acid, chromate solution and silicon dioxide as main components, the balance is water, the passivation solution components are used as the prior art, and a person skilled in the art can select the passivation solution by himself or herself, which is not described herein as the invention.
S3, primary coating: sending the passivated substrate 1 into a chemical drying furnace to enable the highest tapping temperature of the substrate 1 to be 80 ℃; then coating epoxy primer on the front side of the substrate 1 by roller coating, coating epoxy back paint on the back side of the substrate, then entering a primary coating curing oven for curing to form an epoxy primer layer 3 and an epoxy back paint layer 6, cooling the primarily coated substrate 1 to below 50 ℃ after leaving the oven, and removing the moisture on the surface of the substrate 1 by a squeezing roller and an air knife;
s4, fine coating: roller-coating a modified polyester finish paint on the epoxy primer layer 3, then entering a finish coating curing furnace for curing to form a modified polyester finish paint layer 4, and cooling in a water quenching device to obtain a color-coated steel plate resistant to the corrosion of an oxidizing disinfectant; the color-coated steel plate has a structure shown in fig. 14, and comprises a substrate 1, wherein a first protective film 2 and an epoxy primer layer 3 are sequentially coated on the front surface of the substrate 1 from bottom to top, and a modified polyester finish paint layer 4 is further coated on the epoxy primer layer 3; the back of base plate 1 from top to bottom coats in proper order has second protection film 5 and epoxy back paint layer 6.
S5, the color coated steel plate obtained in the step S4 is subjected to inspection and coiling procedures, wherein the inspection refers to the online verification of specific items of the conventional performance of the coating, such as film thickness, color difference, T-bend, gloss, MEK, pencil hardness and the like. The specific test standards for color coated steel sheets are shown in table 3 below.
TABLE 3 inspection standards for color coated steel sheets
Wherein the technological parameters of each step in the technological process are shown in tables 4-8:
TABLE 4 cleaning Process
| Procedure (ii) | Concentration of alkali solution (%) | Temperature of bath solution (. degree.C.) |
| Degreasing | 1.0-1.5 | 55-65 |
| Degreasing | 0.5-1.5 | 50-65 |
| Rinsing | / | 50-65 |
| Rinsing | / | 50-65 |
| Rinsing | / | 45-60 |
TABLE 5 passivation Process
| Passivation layer curing of PMT,. deg.C | Coating amount of passivation layer (single side), mg/m2 |
| 80-95 | 50～100 |
Where PMT indicates the maximum metal plate temperature.
TABLE 6 coating Process parameters
TABLE 7 coating design
| Coating structure | Front film thickness/. mu.m | Back side film thickness/. mu.m |
| 2/1 | ≥20 | ≥5 |
| 2/2 | ≥20 | ≥10 |
Remarking: wherein 2/1 indicates that the front side is coated with two coatings and the back side is coated with one coating; 2/2 indicates two front coatings and two back coatings, and in example 1, 2/1 single back coating is adopted, so that according to actual production requirements, a composite film with two back coatings can be adopted, only the production requirements are different, and within the protection scope of the invention, therefore, the single back coating or the double back coating is actually in the protection scope of the invention, and only a brief description is given here, and a person skilled in the art can select which coating structure is adopted according to the needs of customers.
TABLE 8 curing PMT
Where PMT indicates the maximum metal plate temperature.
Performance testing
The color coated steel sheets of example 1 and comparative example were subjected to performance tests, and the properties of the samples are shown in table 9.
TABLE 9 test panel Properties
The conventional performance indexes of the product are shown in table 10, and the disinfectant and acid-base resistance performance indexes are shown in table 11.
TABLE 10 EXAMPLE 1 conventional Properties of color coated Steel sheet
Table 11 example 1 unconventional performance levels for color coated steel sheets
(1) The specific performance verification method is as follows:
A. resistance to solution test
The test method comprises the following steps: seven glass beakers were prepared, and a certain amount of 5% HCl (hydrochloric acid), 5% NaOH (sodium hydroxide), 5.2% sodium hypochlorite, (5%, 10%, 20%, 30%) hydrogen peroxide solution was prepared and poured into the beakers. The test panels and the prepared solutions were placed in advance in a laboratory at a temperature of 23 + -2 deg.C. After 24 hours, the test samples are respectively placed into beakers, two thirds of the test samples are immersed into the solution, the openings of the beakers are sealed by adopting protective films, and evaporation dishes are reversely buckled at the cup covers. And taking out every 24 hours, washing, sucking water by using filter paper, and observing the surface state of the test piece.
B. High temperature test
The test method comprises the following steps: standing at a constant temperature of 70 ℃ for 24 hours. And (5) 75 × 150mm of sample, and observing whether the surface of the sample has obvious changes such as discoloration, bubbling and the like after the experiment is finished. The required color difference delta E is less than or equal to 2.0.
Test equipment: high-temperature box
C. Resistance to Wet Heat test
Test protocol: the mixture is placed in a constant temperature and humidity box with the temperature of 40 ℃ and the humidity of 98 percent for 1000 hours. 75 x 150mm samples, the surface of the panel was observed after the test to require that the coating not blister.
Test equipment: HS-150 high-low temperature damp-heat test chamber.
And (3) testing results: fig. 1 to 4 show the hydrogen peroxide resistance test results of the color-coated steel plates in the example 1 and the comparative example, the color-coated steel plates in the comparative example in fig. 1 and 3 all foam after the hydrogen peroxide resistance test, while fig. 2 and 4 show that the color-coated steel plate in the example 1 does not foam after the hydrogen peroxide resistance test, and fig. 13 shows the comparison of the performances of the color-coated steel plates in the example 1 and the comparative example after the hydrogen peroxide corrosion at different concentrations, which shows that the steel plates at lower concentration (5% H) are obtained2O2) The corrosion resistance time of the following example 1 was 6 times that of the comparative example; the difference between the two is reduced with the concentration increase, at a concentration of 30% H2O2In case of corrosion, example 1 is 2 times that of the comparative example, which is mainly due to the fact that as the concentration of hydrogen peroxide is increased, the corrosion penetration force of the hydrogen peroxide as a strong oxidant to the coating is increased by orders of magnitude, so that at higher concentrations, the coating foams rapidly, and the time difference between the two is reduced.
FIGS. 5 and 6 show the sodium hypochlorite resistance test results of example 1 and the comparative example, the color-coated steel sheet of the comparative example in FIG. 5 shows foaming after the sodium hypochlorite resistance test, but obviously, the color-coated steel sheet of the example 1 in FIG. 6 does not foam after the sodium hypochlorite resistance test, FIGS. 7 to 10 show the hydrochloric acid and sodium hydroxide resistance results of the color-coated steel sheets of the examples 1 and the comparative example, the color-coated steel sheet of the comparative example in FIG. 7 shows foaming after the acid resistance test, the color-coated steel sheet of the example 1 in FIG. 8 shows no foaming after the acid resistance test, the color-coated steel sheet of the comparative example in FIG. 9 shows foaming after the alkali resistance test, the color-coated steel sheet of the example 1 in FIG. 10 shows no foaming after the alkali resistance test, FIGS. 11 and 12 show the high temperature and humidity resistance results of the color-coated steel sheet of the example 1 in FIG. 1, the Δ E is 0.38 after the color-coated steel sheet of the example 1 in FIG. 11 shows high temperature resistance test at 70 ℃ and 24 hours, the Δ E is 0.38, and Δ E is a change before and after the humidity resistance test, wherein the Δ E is △ in the specific sample plate of the example 1 in FIG2+(△a)2+(△b)2]1/2. L represents luminance, a represents red and green, and b represents (red and green).
If Δ L is positive, it indicates that the sample is lighter than the standard, and if Δ L is negative, it indicates that the sample is darker than the standard.
If Δ a is positive, it indicates that the sample is red (or less green) than the standard sample, and if negative, it indicates that the sample is green (or less red).
If Δ b is positive, the sample is yellow (or less blue) than the standard, and if negative, the sample is blue (or less yellow).
The test results are shown in table 12.
Table 12 summary of oxidation resistant disinfectant performance results for example 1 and comparative examples
(2) Test analysis means: the corrosion resistance of the sample plate is evaluated by adopting a soaking method, and the damaged part of the sample plate is scanned and subjected to energy spectrum analysis, so that the corrosion path of the sample plate is verified, as shown in fig. 15-18, the scanning and energy spectrum analysis after the corrosion damage of the example 1 and the comparative example can be known, the scanning analysis of the sample plate and the comparative example after the corrosion damage is a typical trip component, and no coating remains.
The color coated steel sheets obtained in examples 2 and 3 were tested by the same performance test method as described above, and the test results are shown in table 13.
Table 13 results of performance test of color coated steel sheets in examples 2 and 3
| Test items | Example 2 | Example 3 |
| 5％H2O2 | No foaming within 824 hours | No foaming within 824 |
| 30％H2O2 | No foaming within 48 hours | No foaming within 60 hours |
| 5.2％NaClO | No foaming in 300 hours | No bubbling in 336 |
| 5％HCL | No bubbling in 96 hours | No foaming in 108 |
| 5％NaOH | No foaming within 196 hours | No foaming in 240 hours |
| High temperature resistance at 70 DEG C | After 24 hours,. DELTA.E is 0.26 | After 24 hours,. DELTA.E is 0.24 |
| Damp-heat (40 ℃, 98% RH) | Δ E after 1000 hours is 0.23 | Δ E after 1000 hours is 0.23 |
The examples described herein are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. An epoxy primer resistant to corrosion by oxidative disinfectants, which is characterized in that: the paint mainly comprises epoxy resin, coloring pigment, antirust pigment, a flatting agent, a wetting agent, a defoaming agent and a film-forming additive, wherein the components in parts by mass are as follows:
2. the oxidation disinfectant corrosion resistant epoxy primer of claim 1, wherein: the epoxy resin is polyol resin, the main component of the coloring pigment comprises titanium dioxide, and the antirust pigment comprises a chemical antirust pigment and/or a physical antirust pigment.
3. The modified polyester finish paint resisting the corrosion of the oxidizing disinfectant is characterized in that: the color paint mainly comprises first saturated polyester, second modified saturated polyester, a coloring pigment, a leveling agent, a wetting agent, a defoaming agent and a special medium corrosion resistant auxiliary agent, wherein the weight parts of the components are as follows:
4. the modified polyester topcoat resistant to oxidative disinfectant corrosion of claim 3, wherein: the main components of the second modified saturated polyester are melamine, isocyanate, fine film-forming particles, hindered amine and common polyester; the main component of the coloring pigment comprises titanium dioxide; the special medium corrosion resistant auxiliary agent mainly comprises propylene glycol phenyl ether, ester alcohol, an oxidation resistant auxiliary agent and a fluorine-containing surfactant.
5. A color-coated steel sheet resistant to corrosion by oxidative disinfectants, comprising a substrate (1), characterized in that: the front surface of the substrate (1) is sequentially coated with a first protective film (2) and an epoxy primer layer (3) from bottom to top, and the epoxy primer layer (3) is further coated with a modified polyester finish paint layer (4); the back of base plate (1) from top to bottom coats in proper order and has second protection film (5) and epoxy back paint layer (6), and wherein the main component of epoxy back paint layer (6) is epoxy.
6. The color-coated steel sheet resistant to oxidation disinfectant corrosion of claim 5, wherein: the substrate (1) is a hot-dip galvanized steel sheet.
7. The color-coated steel sheet resistant to oxidation disinfectant corrosion of claim 5, wherein: the weight of the single-side film of the first protective film (2) and the second protective film (5) is 50-100 mg/m2The thickness of the epoxy primer layer (3) is 5-7 mu m, the thickness of the modified polyester finish paint layer (4) is 15-17 mu m, and the thickness of the epoxy back paint layer (6) is 5-12 mu m.
8. A manufacturing process of a color coated steel plate resistant to the corrosion of an oxidizing disinfectant is characterized by comprising the following steps of: the method comprises the following steps: firstly, cleaning the surface of a substrate (1), passivating the surface of the cleaned substrate (1) to generate a first protective film (2) and a second protective film (5) on the surface of the substrate to slow down corrosion of the substrate (1) and enhance adhesion between the substrate (1) and a coating, then coating epoxy primer on the first protective film (2) and epoxy back paint on the second protective film (5), respectively forming an epoxy primer layer (3) and an epoxy back paint layer (6) after curing, finally coating modified polyester finish paint on the epoxy primer layer (3), and forming a modified polyester finish paint layer (4) after curing.
9. The process of manufacturing an oxidation disinfectant corrosion resistant color coated steel plate of claim 8, wherein: the method comprises the following steps:
s1, cleaning: carrying out spraying alkaline washing and rinsing on the substrate (1) with the grease to remove oil stains and impurities on the surface of the substrate (1) and enable the substrate (1) to have a clean surface;
s2, pretreatment: sending the cleaned substrate (1) into a chemical roller coating section to carry out passivation treatment on the surface of the substrate, so that a first protective film (2) and a second protective film (5) are formed on the surface of the substrate, and the corrosion resistance and the adhesion of the substrate and a coating are ensured;
s3, primary coating: sending the passivated substrate (1) into a chemical drying furnace to enable the highest tapping temperature of the substrate (1) to be 80 ℃; then coating the front surface of the substrate (1) with epoxy primer, coating the back surface of the substrate with epoxy back paint, then entering a primary coating curing oven for curing to form an epoxy primer layer (3) and an epoxy back paint layer (6), cooling the primarily coated substrate (1) to below 50 ℃ after leaving the oven, and removing the surface moisture of the substrate (1) through a squeezing roller and an air knife;
s4, fine coating: and (3) finely coating the modified polyester finish paint on the epoxy primer layer (3), then entering a fine coating curing furnace for curing to form a modified polyester finish paint layer (4), and cooling to obtain the color coated steel plate resistant to the corrosion of the oxidizing disinfectant.
10. The process of manufacturing an oxidation disinfectant corrosion resistant color coated steel plate of claim 9, wherein: the color-coated steel sheet obtained in step S4 is also subjected to inspection and coiling processes.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113151745A (en) * | 2021-05-08 | 2021-07-23 | 马鞍山钢铁股份有限公司 | Acid and alkali corrosion resistant aluminum-zinc plated pre-coated plate and manufacturing method thereof |
| CN114032010A (en) * | 2021-11-05 | 2022-02-11 | 西安隆基绿能建筑科技有限公司 | Color steel plate suitable for metal roof BIPV system |
| CN114874691A (en) * | 2022-06-20 | 2022-08-09 | 马鞍山钢铁股份有限公司 | Pre-priming integrated agent for color-coated sheet, preparation method of pre-priming-integrated agent, color-coated sheet and production method of color-coated sheet |
| CN115216197A (en) * | 2022-05-30 | 2022-10-21 | 山东嘉隆新型材料有限公司 | Color-coated sheet and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102275353A (en) * | 2011-06-16 | 2011-12-14 | 苏州扬子江新型材料股份有限公司 | Cleansing color coated steel sheet for purification and preparation method thereof |
| CN202965398U (en) * | 2012-10-25 | 2013-06-05 | 绍兴万成金属薄板有限公司 | Polymer polyester colour-coated coil |
| CN103586180A (en) * | 2013-10-31 | 2014-02-19 | 苏州扬子江新型材料股份有限公司 | Preparing method for high-temperature-resistant and wear-resistant color-coated plate |
| CN107502155A (en) * | 2017-09-20 | 2017-12-22 | 北京金汇利应用化工制品有限公司 | A kind of coating of steel band property of water-bearing acrylic acid modified saturated polyester resin |
| CN108342146A (en) * | 2018-02-26 | 2018-07-31 | 河北晨阳工贸集团有限公司 | The multi-purpose water-base epoxy paint of a kind of priming paint, intermediate coat |
-
2019
- 2019-12-09 CN CN201911247378.0A patent/CN110845939B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102275353A (en) * | 2011-06-16 | 2011-12-14 | 苏州扬子江新型材料股份有限公司 | Cleansing color coated steel sheet for purification and preparation method thereof |
| CN202965398U (en) * | 2012-10-25 | 2013-06-05 | 绍兴万成金属薄板有限公司 | Polymer polyester colour-coated coil |
| CN103586180A (en) * | 2013-10-31 | 2014-02-19 | 苏州扬子江新型材料股份有限公司 | Preparing method for high-temperature-resistant and wear-resistant color-coated plate |
| CN107502155A (en) * | 2017-09-20 | 2017-12-22 | 北京金汇利应用化工制品有限公司 | A kind of coating of steel band property of water-bearing acrylic acid modified saturated polyester resin |
| CN108342146A (en) * | 2018-02-26 | 2018-07-31 | 河北晨阳工贸集团有限公司 | The multi-purpose water-base epoxy paint of a kind of priming paint, intermediate coat |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113151745A (en) * | 2021-05-08 | 2021-07-23 | 马鞍山钢铁股份有限公司 | Acid and alkali corrosion resistant aluminum-zinc plated pre-coated plate and manufacturing method thereof |
| CN114032010A (en) * | 2021-11-05 | 2022-02-11 | 西安隆基绿能建筑科技有限公司 | Color steel plate suitable for metal roof BIPV system |
| CN115216197A (en) * | 2022-05-30 | 2022-10-21 | 山东嘉隆新型材料有限公司 | Color-coated sheet and preparation method thereof |
| CN114874691A (en) * | 2022-06-20 | 2022-08-09 | 马鞍山钢铁股份有限公司 | Pre-priming integrated agent for color-coated sheet, preparation method of pre-priming-integrated agent, color-coated sheet and production method of color-coated sheet |
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