CN111040555A - Galvanized coiled material colored fingerprint-resistant coating and preparation method thereof - Google Patents
Galvanized coiled material colored fingerprint-resistant coating and preparation method thereof Download PDFInfo
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- CN111040555A CN111040555A CN201911417269.9A CN201911417269A CN111040555A CN 111040555 A CN111040555 A CN 111040555A CN 201911417269 A CN201911417269 A CN 201911417269A CN 111040555 A CN111040555 A CN 111040555A
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- 238000000576 coating method Methods 0.000 title claims abstract description 42
- 239000011248 coating agent Substances 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 title claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000003756 stirring Methods 0.000 claims abstract description 43
- 229920005989 resin Polymers 0.000 claims abstract description 28
- 239000011347 resin Substances 0.000 claims abstract description 28
- 239000002270 dispersing agent Substances 0.000 claims abstract description 27
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 18
- 230000007797 corrosion Effects 0.000 claims abstract description 18
- 238000005260 corrosion Methods 0.000 claims abstract description 18
- 239000008367 deionised water Substances 0.000 claims abstract description 18
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 18
- 239000003112 inhibitor Substances 0.000 claims abstract description 18
- 239000000080 wetting agent Substances 0.000 claims abstract description 13
- -1 alkyl diphenyl ether Chemical compound 0.000 claims abstract description 11
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Natural products C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000011049 filling Methods 0.000 claims abstract description 6
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 20
- 239000004215 Carbon black (E152) Substances 0.000 claims description 12
- 229930195733 hydrocarbon Natural products 0.000 claims description 12
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 claims description 10
- 239000006185 dispersion Substances 0.000 claims description 8
- 150000002430 hydrocarbons Chemical class 0.000 claims description 8
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 5
- 239000004925 Acrylic resin Substances 0.000 claims description 5
- 229920000178 Acrylic resin Polymers 0.000 claims description 5
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 5
- 239000004593 Epoxy Substances 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 5
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 5
- JOSWYUNQBRPBDN-UHFFFAOYSA-P ammonium dichromate Chemical compound [NH4+].[NH4+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O JOSWYUNQBRPBDN-UHFFFAOYSA-P 0.000 claims description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 5
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 5
- 229940117975 chromium trioxide Drugs 0.000 claims description 5
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical group [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 claims description 5
- GAMDZJFZMJECOS-UHFFFAOYSA-N chromium(6+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Cr+6] GAMDZJFZMJECOS-UHFFFAOYSA-N 0.000 claims description 5
- 239000000839 emulsion Substances 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 239000003973 paint Substances 0.000 claims description 5
- 229920001568 phenolic resin Polymers 0.000 claims description 5
- 239000005011 phenolic resin Substances 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 239000004645 polyester resin Substances 0.000 claims description 5
- 229920001225 polyester resin Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- 229920005792 styrene-acrylic resin Polymers 0.000 claims description 5
- 239000011593 sulfur Substances 0.000 claims description 5
- 229910052717 sulfur Inorganic materials 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000013329 compounding Methods 0.000 claims description 2
- 238000003860 storage Methods 0.000 abstract description 6
- 239000003945 anionic surfactant Substances 0.000 abstract description 4
- 230000008021 deposition Effects 0.000 abstract description 4
- 230000016615 flocculation Effects 0.000 abstract description 4
- 238000005189 flocculation Methods 0.000 abstract description 4
- 238000005536 corrosion prevention Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 239000000049 pigment Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 125000001183 hydrocarbyl group Chemical group 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 229910014314 BYK190 Inorganic materials 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 125000005041 acyloxyalkyl group Chemical group 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
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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
- C09D133/00—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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
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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
- C09D125/00—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 an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
- C09D125/02—Homopolymers or copolymers of hydrocarbons
- C09D125/04—Homopolymers or copolymers of styrene
- C09D125/08—Copolymers of styrene
- C09D125/14—Copolymers of styrene with unsaturated esters
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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
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09D161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- 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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- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- 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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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2251—Oxides; Hydroxides of metals of chromium
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Abstract
The invention relates to the technical field of metal corrosion prevention, and particularly discloses a colored fingerprint-resistant coating for a galvanized coiled material and a preparation method thereof, wherein the colored fingerprint-resistant coating comprises the following components in parts by weight: 10-30 parts of water-based resin, 0.1-5 parts of corrosion inhibitor, 1-5 parts of silane coupling agent, 0.1-1 part of wetting agent, 1-10 parts of pH regulator, 0.1-5 parts of dispersing agent, 2-6 parts of color paste and the balance of deionized water, wherein the total is 100 parts; wherein the dispersant is alkyl diphenyl ether disulfonate; firstly, adding aqueous resin into deionized water, then sequentially adding a corrosion inhibitor, a silane coupling agent, a wetting agent color paste, a dispersing agent and a pH regulator under the stirring condition, adjusting the pH to 7.5-8.0, stirring and filling to obtain the colored fingerprint-resistant coating. The invention overcomes the defects of the prior art, adopts the anionic surfactant as the dispersing agent, avoids the flocculation and deposition of the coating, and has good tinting strength, excellent color development and storage stability.
Description
Technical Field
The invention relates to the technical field of metal corrosion prevention, and particularly belongs to a galvanized coil colored fingerprint-resistant coating and a preparation method thereof.
Background
At present, most of films formed on galvanized/aluminized zinc coil steel by using a colored fingerprint-resistant coating at home and abroad are colorless transparent films, manufacturers producing and using fingerprint-resistant coil plates gradually use colored fingerprint-resistant steel plates for decoration and decoration or for identification and collar installation, and the colored fingerprint-resistant coating is gradually applied to the galvanized/aluminized zinc production line.
The colored fingerprint-resistant coating is mostly prepared by adding color paste into colorless colored fingerprint-resistant coating for color mixing and refining, and then in the conventional production process, the intended target is difficult to achieve on compatibility and dispersibility through common stirring and dispersion, so that the phenomena of storage stability, tinting strength and coating color unevenness are caused, and huge loss is brought to production.
Disclosure of Invention
The invention aims to provide a galvanized coil colored fingerprint-resistant coating and a preparation method thereof, overcomes the defects of the prior art, adopts an anionic surfactant as a dispersing agent, avoids the flocculation and deposition of the coating, and has good tinting strength, excellent color development and storage stability.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the colored fingerprint-resistant coating for the galvanized coiled material comprises the following components in parts by weight: 10-30 parts of water-based resin, 0.1-5 parts of corrosion inhibitor, 1-5 parts of silane coupling agent, 0.1-1 part of wetting agent, 1-10 parts of pH regulator, 0.1-5 parts of dispersing agent, 2-6 parts of color paste and the balance of deionized water, wherein the total is 100 parts; wherein the dispersant is alkyl diphenyl ether disulfonate.
Further, the paint comprises the following components in parts by weight: 15-25 parts of water-based resin, 0.6-4.5 parts of corrosion inhibitor, 2-4 parts of silane coupling agent, 0.2-0.9 part of wetting agent, 2-9 parts of PH regulator, 0.6-4.5 parts of dispersant, 3-5 parts of color paste and the balance of deionized water, wherein the total is 100 parts; wherein the dispersant is alkyl diphenyl ether disulfonate.
Further, the paint comprises the following components in parts by weight: 20 parts of water-based resin, 2.55 parts of corrosion inhibitor, 3 parts of silane coupling agent, 0.55 part of wetting agent, 5.5 parts of pH regulator, 2.55 parts of dispersant, 4 parts of color paste and the balance of deionized water, wherein the total is 100 parts; wherein the dispersant is alkyl diphenyl ether disulfonate.
Further, the water-based resin is emulsion type, water dispersion type or water-soluble water-based resin; two or more than two of waterborne acrylic resin, waterborne styrene-acrylic resin, waterborne phenolic resin, waterborne polyurethane, waterborne organic silicon resin, waterborne epoxy resin and waterborne polyester resin are compounded.
Further, the corrosion inhibitor is a hexavalent chromium mixture and is selected from one of chromic anhydride, chromium trioxide, chromium oxide, potassium dichromate, sodium mesochromate and ammonium dichromate.
Further, the silane coupling agent is selected from one or a combination of a plurality of methacrylic acyloxy alkyl groups, amino hydrocarbon groups, epoxy hydrocarbon groups and sulfur-containing hydrocarbon groups.
Further, the ph regulator is a mixture of phosphoric acid and ammonia water.
Further, the color paste is water-based color paste and is selected from one or more of red, green, yellow, blue, black and white color pastes for compounding.
The preparation method of the colored fingerprint-resistant coating for the galvanized coil based on any one of the above steps comprises the following steps:
s1: taking deionized water, slowly adding the water-based resin into the deionized water, and stirring to obtain a component A;
s2: under the stirring condition, sequentially adding a corrosion inhibitor, a silane coupling agent and a wetting agent into the component A, and continuously stirring to obtain a component B;
s3: under the stirring condition, adding color paste and a dispersing agent into the component B, simultaneously adding a pH regulator, regulating the pH to 7.5-8.0, and continuously stirring to obtain a component C;
s4: stirring and filling to obtain the colored fingerprint-resistant coating.
Further, the stirring time in the S1 is 10-30min, the stirring time in the S2 is 20-60min, and the stirring time in the S3 is 10-30 min; the stirring speeds in the stirring processes in the S1, S2, S3 and S4 are all 100-300 rpm.
Compared with the prior art, the invention has the following implementation effects:
according to the galvanized coil colored fingerprint-resistant coating and the preparation method thereof, the anionic surfactant is used as a dispersing agent, each molecule of the anionic surfactant contains two negative charges, the adsorption capacity and the dispersion capacity are high, the connection force is high, the adsorption and dispersion capacities on the pigment in the color paste are high, and the agglomerate form of pigment particles is reduced; meanwhile, the pigment has two negative charges, the self electrostatic repulsion action ensures that the particle size distribution is narrow and uniform, the flocculation and the deposition cannot occur due to storage, and the pigment has good tinting strength, excellent color development and storage stability.
Drawings
FIG. 1 is a structural formula of the dispersant, wherein R is a straight chain or branched chain saturated alkyl with 1-20 carbon atoms.
Detailed Description
The present invention will be further described with reference to the following examples, but the present invention is not limited to these examples, and any modification is within the scope of the present invention without departing from the spirit of the present invention.
Example 1
The embodiment provides a preparation method of a galvanized coil colored fingerprint-resistant coating, which comprises the following steps:
s1: taking 86.7kg of deionized water, slowly adding 10kg of water-based resin into the deionized water, and stirring to obtain a component A;
s2: under the condition of stirring, sequentially adding 0.1kg of corrosion inhibitor, 1kg of silane coupling agent and 0.1kg of wetting agent into the component A, and continuously stirring to obtain a component B;
s3: under the stirring condition, 2kg of color paste and 0.1kg of dispersing agent are added into the component B, 1kg of pH regulator is added at the same time, the pH is adjusted to 7.5-8.0, and the stirring is continued to obtain a component C;
s4: stirring and filling to obtain the colored fingerprint-resistant coating.
Wherein the water-based resin is emulsion type, water dispersion type or water-soluble water-based resin; two or more than two of waterborne acrylic resin, waterborne styrene-acrylic resin, waterborne phenolic resin, waterborne polyurethane, waterborne organic silicon resin, waterborne epoxy resin and waterborne polyester resin are compounded; the corrosion inhibitor is a hexavalent chromium mixture and is selected from one of chromic anhydride, chromium trioxide, chromium oxide, potassium dichromate, sodium mesochromate and ammonium dichromate; the silane coupling agent is selected from one or a combination of more of methacryloxyalkyl, amino hydrocarbon, epoxy hydrocarbon and sulfur-containing hydrocarbon; the ph regulator is a mixture of phosphoric acid and ammonia water.
Example 2
The embodiment provides a preparation method of a galvanized coil colored fingerprint-resistant coating, which comprises the following steps:
s1: taking 61.85kg of deionized water, slowly adding 20kg of water-based resin into the deionized water, and stirring to obtain a component A;
s2: under the condition of stirring, sequentially adding 2.55kg of corrosion inhibitor, 3kg of silane coupling agent and 0.55kg of wetting agent into the component A, and continuously stirring to obtain a component B;
s3: under the stirring condition, adding 4kg of color paste and 2.55g of dispersing agent into the component B, simultaneously adding 5.5kg of pH regulator, regulating the pH value to 7.5-8.0, and continuously stirring to obtain a component C;
s4: stirring and filling to obtain the colored fingerprint-resistant coating.
Wherein the water-based resin is emulsion type, water dispersion type or water-soluble water-based resin; two or more than two of waterborne acrylic resin, waterborne styrene-acrylic resin, waterborne phenolic resin, waterborne polyurethane, waterborne organic silicon resin, waterborne epoxy resin and waterborne polyester resin are compounded; the corrosion inhibitor is a hexavalent chromium mixture and is selected from one of chromic anhydride, chromium trioxide, chromium oxide, potassium dichromate, sodium mesochromate and ammonium dichromate; the silane coupling agent is selected from one or a combination of more of methacryloxyalkyl, amino hydrocarbon, epoxy hydrocarbon and sulfur-containing hydrocarbon; the ph regulator is a mixture of phosphoric acid and ammonia water.
Example 3
The embodiment provides a preparation method of a galvanized coil colored fingerprint-resistant coating, which comprises the following steps:
s1: taking 38g of deionized water, slowly adding 30kg of water-based resin into the deionized water, and stirring to obtain a component A;
s2: under the stirring condition, sequentially adding 5kg of corrosion inhibitor, 5kg of silane coupling agent and 1kg of wetting agent into the component A, and continuously stirring to obtain a component B;
s3: under the stirring condition, 6kg of color paste and 5g of dispersing agent are added into the component B, 10kg of pH regulator is added at the same time, the pH is adjusted to 7.5-8.0, and the stirring is continued to obtain a component C;
s4: stirring and filling to obtain the colored fingerprint-resistant coating.
Wherein the water-based resin is emulsion type, water dispersion type or water-soluble water-based resin; two or more than two of waterborne acrylic resin, waterborne styrene-acrylic resin, waterborne phenolic resin, waterborne polyurethane, waterborne organic silicon resin, waterborne epoxy resin and waterborne polyester resin are compounded; the corrosion inhibitor is a hexavalent chromium mixture and is selected from one of chromic anhydride, chromium trioxide, chromium oxide, potassium dichromate, sodium mesochromate and ammonium dichromate; the silane coupling agent is selected from one or a combination of more of methacryloxyalkyl, amino hydrocarbon, epoxy hydrocarbon and sulfur-containing hydrocarbon; the ph regulator is a mixture of phosphoric acid and ammonia water.
Comparative example 1
The materials and preparation process were substantially the same as those of the examples except that no dispersant was added.
Comparative example 2
The materials and preparation process were substantially the same as those of the examples, except that the dispersant was replaced with a BYK190 dispersant.
The colored fingerprint-resistant coatings produced according to the methods of examples 1-3 and comparative examples 1-2 are stored for 3 months, 6 months, 12 months and 18 months respectively, galvanized steel plates are taken, the same pretreatment is carried out, then, the colored fingerprint-resistant coatings are respectively used for three-wire bar knife coating, PMT 120-degree curing is carried out, sample plates with coatings are obtained, the thickness of the coatings is 1.0 +/-0.2 mu m, the colors of the coatings are observed, and the observation results are shown in Table 1.
The galvanized coil colored fingerprint-resistant coating and the preparation method thereof effectively avoid flocculation and deposition of the coating, and have good tinting strength, excellent color development and storage stability.
The foregoing is merely exemplary and illustrative of the present inventive concept and various modifications, additions and substitutions of similar embodiments may be made to the specific embodiments described by those skilled in the art without departing from the inventive concept or exceeding the scope of the claims as defined in the accompanying claims.
Claims (10)
1. The colored fingerprint-resistant coating for the galvanized coiled material is characterized by comprising the following components in parts by weight: the paint comprises the following components in parts by weight: 10-30 parts of water-based resin, 0.1-5 parts of corrosion inhibitor, 1-5 parts of silane coupling agent, 0.1-1 part of wetting agent, 1-10 parts of pH regulator, 0.1-5 parts of dispersing agent, 2-6 parts of color paste and the balance of deionized water, wherein the total is 100 parts; wherein the dispersant is alkyl diphenyl ether disulfonate.
2. The galvanized coil colored fingerprint-resistant coating as claimed in claim 1, characterized in that: the paint comprises the following components in parts by weight: 15-25 parts of water-based resin, 0.6-4.5 parts of corrosion inhibitor, 2-4 parts of silane coupling agent, 0.2-0.9 part of wetting agent, 2-9 parts of PH regulator, 0.6-4.5 parts of dispersant, 3-5 parts of color paste and the balance of deionized water, wherein the total is 100 parts; wherein the dispersant is alkyl diphenyl ether disulfonate.
3. The galvanized coil colored fingerprint-resistant coating as claimed in claim 1, characterized in that: the paint comprises the following components in parts by weight: 20 parts of water-based resin, 2.55 parts of corrosion inhibitor, 3 parts of silane coupling agent, 0.55 part of wetting agent, 5.5 parts of pH regulator, 2.55 parts of dispersant, 4 parts of color paste and the balance of deionized water, wherein the total is 100 parts; wherein the dispersant is alkyl diphenyl ether disulfonate.
4. The galvanized coil colored fingerprint-resistant coating as claimed in claim 1, characterized in that: the water-based resin is emulsion type, water dispersion type or water-soluble water-based resin; two or more than two of waterborne acrylic resin, waterborne styrene-acrylic resin, waterborne phenolic resin, waterborne polyurethane, waterborne organic silicon resin, waterborne epoxy resin and waterborne polyester resin are compounded.
5. The galvanized coil colored fingerprint-resistant coating as claimed in claim 1, characterized in that: the corrosion inhibitor is a hexavalent chromium mixture and is selected from one of chromic anhydride, chromium trioxide, chromium oxide, potassium dichromate, sodium mesochromate and ammonium dichromate.
6. The galvanized coil colored fingerprint-resistant coating as claimed in claim 1, characterized in that: the silane coupling agent is selected from one or a combination of more of methacryloxyalkyl, amino hydrocarbon, epoxy hydrocarbon and sulfur-containing hydrocarbon.
7. The galvanized coil colored fingerprint-resistant coating as claimed in claim 1, characterized in that: the ph regulator is a mixture of phosphoric acid and ammonia water.
8. The galvanized coil colored fingerprint-resistant coating as claimed in claim 1, characterized in that: the color paste is water-based color paste, and is selected from one or more of red, green, yellow, blue, black and white color pastes for compounding.
9. The preparation method of the galvanized coil colored fingerprint-resistant coating as claimed in any one of claims 1 to 8, characterized in that: the method comprises the following steps:
s1: taking deionized water, slowly adding the water-based resin into the deionized water, and stirring to obtain a component A;
s2: under the stirring condition, sequentially adding a corrosion inhibitor, a silane coupling agent and a wetting agent into the component A, and continuously stirring to obtain a component B;
s3: under the stirring condition, adding color paste and a dispersing agent into the component B, simultaneously adding a pH regulator, regulating the pH to 7.5-8.0, and continuously stirring to obtain a component C;
s4: stirring and filling to obtain the colored fingerprint-resistant coating.
10. The preparation method of the galvanized coil colored fingerprint-resistant coating as claimed in claim 9, characterized in that: the stirring continuing time in the S1 is 10-30min, the stirring continuing time in the S2 is 20-60min, and the stirring continuing time in the S3 is 10-30 min; the stirring speeds in the stirring processes in the S1, S2, S3 and S4 are all 100-300 rpm.
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| CN201911417269.9A CN111040555A (en) | 2019-12-31 | 2019-12-31 | Galvanized coiled material colored fingerprint-resistant coating and preparation method thereof |
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| CN201911417269.9A CN111040555A (en) | 2019-12-31 | 2019-12-31 | Galvanized coiled material colored fingerprint-resistant coating and preparation method thereof |
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| CN112940584A (en) * | 2021-02-01 | 2021-06-11 | 贵州中亚高科涂料有限公司 | Production method of anti-flocculation coating |
| CN115851094A (en) * | 2022-12-14 | 2023-03-28 | 南京工业大学 | Double-resin aqueous coating for zinc-based alloy and preparation method thereof |
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| CN112940584A (en) * | 2021-02-01 | 2021-06-11 | 贵州中亚高科涂料有限公司 | Production method of anti-flocculation coating |
| CN115851094A (en) * | 2022-12-14 | 2023-03-28 | 南京工业大学 | Double-resin aqueous coating for zinc-based alloy and preparation method thereof |
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