CN111057429A - Preparation method of galvanized coiled material colored fingerprint-resistant coating - Google Patents
Preparation method of galvanized coiled material colored fingerprint-resistant coating Download PDFInfo
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- CN111057429A CN111057429A CN201911423548.6A CN201911423548A CN111057429A CN 111057429 A CN111057429 A CN 111057429A CN 201911423548 A CN201911423548 A CN 201911423548A CN 111057429 A CN111057429 A CN 111057429A
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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 21
- 239000000463 material Substances 0.000 title claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 124
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 110
- 239000008367 deionised water Substances 0.000 claims abstract description 35
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 35
- 229920005989 resin Polymers 0.000 claims abstract description 26
- 239000011347 resin Substances 0.000 claims abstract description 26
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 21
- 230000007797 corrosion Effects 0.000 claims abstract description 21
- 238000005260 corrosion Methods 0.000 claims abstract description 21
- 239000003112 inhibitor Substances 0.000 claims abstract description 21
- 239000000080 wetting agent Substances 0.000 claims abstract description 21
- 239000002270 dispersing agent Substances 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 claims abstract description 9
- 230000001276 controlling effect Effects 0.000 claims abstract description 8
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 32
- 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 16
- -1 amino hydrocarbon Chemical class 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 9
- 239000004925 Acrylic resin Substances 0.000 claims description 8
- 229920000178 Acrylic resin Polymers 0.000 claims description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 8
- 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 8
- 239000003945 anionic surfactant Substances 0.000 claims description 8
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 8
- 229940117975 chromium trioxide Drugs 0.000 claims description 8
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical group [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 claims description 8
- GAMDZJFZMJECOS-UHFFFAOYSA-N chromium(6+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Cr+6] GAMDZJFZMJECOS-UHFFFAOYSA-N 0.000 claims description 8
- 238000013329 compounding Methods 0.000 claims description 8
- 239000003822 epoxy resin Substances 0.000 claims description 8
- 238000011049 filling Methods 0.000 claims description 8
- 239000005011 phenolic resin Substances 0.000 claims description 8
- 229920000647 polyepoxide Polymers 0.000 claims description 8
- 229920001225 polyester resin Polymers 0.000 claims description 8
- 239000004645 polyester resin Substances 0.000 claims description 8
- 239000004814 polyurethane Substances 0.000 claims description 8
- 229920002635 polyurethane Polymers 0.000 claims description 8
- 229910052708 sodium Inorganic materials 0.000 claims description 8
- 239000011734 sodium Substances 0.000 claims description 8
- 229920005792 styrene-acrylic resin Polymers 0.000 claims description 8
- 239000011593 sulfur Substances 0.000 claims description 8
- 229910052717 sulfur Inorganic materials 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 7
- 101150076749 C10L gene Proteins 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 229920001568 phenolic resin Polymers 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 239000010703 silicon Substances 0.000 claims description 7
- 239000004215 Carbon black (E152) Substances 0.000 claims description 6
- 229930195733 hydrocarbon Natural products 0.000 claims description 6
- 150000002430 hydrocarbons Chemical class 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000007792 addition Methods 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 abstract description 6
- 238000010008 shearing Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 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
- 125000004103 aminoalkyl group Chemical group 0.000 description 6
- 125000001183 hydrocarbyl group Chemical group 0.000 description 6
- 239000011247 coating layer Substances 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003860 storage 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
- 230000000694 effects Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000049 pigment Substances 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
- 230000008021 deposition Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- 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
-
- 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
-
- 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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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- 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
- 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
- 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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- 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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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of metal corrosion prevention, and particularly discloses a preparation method of a colored fingerprint-resistant coating for a galvanized coiled material, which comprises the steps of taking a reactor, slowly adding water-based resin into deionized water under the condition of stirring, heating to 40-60 ℃, slowly adding a corrosion inhibitor, a silane coupling agent and a wetting agent, continuously stirring to obtain a component A, and keeping the temperature for later use; adding deionized water into another reactor, adding color paste and dispersant, and stirring to obtain component B; slowly adding the component B into the component A, stopping stirring and standing for 1-5min, quickly starting stirring, and controlling the period of adding the component B to circularly operate for 1-3 times; after the component B is added, the operation is recycled for 1 to 3 times to obtain a component C; and adding a pH regulator and deionized water into the component C, and regulating the pH to 7.5-8.0 to obtain the colored fingerprint-resistant coating. The invention overcomes the defects of the prior art, increases the shearing force in the instantaneous unit area by repeatedly turning off the stirring and then starting the stirring, and is beneficial to the dispersion of color paste.
Description
Technical Field
The invention relates to the technical field of metal corrosion prevention, and particularly belongs to a preparation method of a galvanized coiled material colored fingerprint-resistant coating.
Background
At present, most of film layers formed on galvanized/aluminized zinc coil steel by using fingerprint-resistant coatings at home and abroad are colorless transparent film layers, manufacturers producing and using fingerprint-resistant coil plates gradually use colored fingerprint-resistant steel plates for decoration and decoration or for identification and reception installation, and the colored fingerprint-resistant coatings are gradually applied to aluminized zinc production lines.
Most of colored fingerprint-resistant coatings are prepared by adding color paste into colorless fingerprint-resistant coatings for color mixing and refining, and then in the conventional production process, the colored fingerprint-resistant coatings are dispersed by common stirring, so that the expected targets on compatibility and dispersibility are difficult to achieve, and further, the phenomena of storage stability, tinting strength and uneven coating color are caused, and huge loss is brought to production.
High-speed dispersion is usually carried out by using a mode of improving stirring intensity in the prior art, but the high-speed dispersion is not well controlled, and emulsion breaking can be caused. Therefore, the dispersion of the color paste pigment in the colored fingerprint-resistant coating is very important.
Disclosure of Invention
The invention aims to provide a preparation method of a galvanized coil colored fingerprint-resistant coating, which overcomes the defects of the prior art, increases the shearing force in the instantaneous unit area by repeatedly turning off stirring and then starting stirring, is beneficial to the dispersion of color paste, and avoids the phenomena of emulsion breaking and the like caused by long-term high-speed fraction.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a preparation method of a galvanized coiled material colored fingerprint-resistant coating comprises the following steps:
s1: adding 20-40 parts of deionized water into a reactor, weighing the raw materials of the water-based resin according to the parts by weight, slowly adding 10-30 parts of the water-based resin into the deionized water under the condition of stirring, uniformly stirring, then heating to 40-60 ℃, slowly adding the corrosion inhibitor, the silane coupling agent and the wetting agent, continuously stirring for 10-30min to obtain a component A, and preserving heat for later use;
s2: adding 15-30 parts of deionized water into another reactor, adding 2-6 parts of color paste and 1-5 parts of dispersing agent, and stirring for 10-30min to obtain a component B for later use;
s3: heating to 40-60 deg.C, slowly adding component B into A under constant temperature and stirring, stopping stirring, standing for 1-5min, rapidly starting stirring, and controlling the time of adding component B to operate for 1-3 times; after the component B is added, the operation is recycled for 1 to 3 times to obtain a component C;
s4: under the condition of stirring, adding 5-10 parts of pH regulator and deionized water into the component C, uniformly stirring, and regulating the pH to 7.5-8.0;
s5: stirring and filling to obtain the colored fingerprint-resistant coating.
Further, the addition amounts of the corrosion inhibitor, the silane coupling agent and the wetting agent in the S1 are respectively 1-5 parts of the corrosion inhibitor, 1-5 parts of the silane coupling agent and 0.1-1 part of the wetting agent.
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; the silane coupling agent is selected from at least one of methacryloxyalkyl, amino hydrocarbon, epoxy hydrocarbon and sulfur-containing hydrocarbon; the wetting agent is at least one selected from NP-9, OP-9, NP-10 and OP-10.
Further, in S1, the aqueous resin is at least one of an aqueous acrylic resin, an aqueous styrene-acrylic resin, an aqueous phenol resin, an aqueous polyurethane, an aqueous silicone resin, an aqueous epoxy resin, and an aqueous polyester resin.
Further, the color paste in the S2 is water-based color paste, and is selected from one or more of red, green, yellow, blue, black and white color pastes for compounding.
Further, the dispersant in S2 is an anionic surfactant, and is one selected from the group consisting of DOWFAX 2a1, DOWFAX 3B2, DOWFAX 8390, DOWFAX C6L, and DOWFAX C10L.
Further, the stirring speeds of the stirring in S1, S2 and S4 were all 100-300rpm, and the stirring speed of the stirring in S3 was 300-800 rpm.
Compared with the prior art, the invention has the following implementation effects:
according to the preparation method of the galvanized coil colored fingerprint-resistant coating, the process of stopping stirring and then starting stirring is repeatedly carried out in the process of adding the component B into the component A, so that the shearing force in an instantaneous unit area is increased, dispersion of color paste is facilitated, and meanwhile, the phenomena of emulsion breaking and the like caused by long-term high-speed fraction are avoided; the temperature is increased to 40-60 ℃, the molecular motion activity is improved, and the dispersing capacity of the color paste in the composition is improved; the special anionic surfactant is matched to be used as a dispersing agent, so that the agglomerate form of pigment particles is reduced, and the tinting strength, excellent color development and storage stability of the fingerprint-resistant coating are improved.
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
A preparation method of a galvanized coiled material colored fingerprint-resistant coating comprises the following steps:
s1: adding 20kg of deionized water into a reactor, slowly adding 10kg of water-based resin into the deionized water under the stirring condition, uniformly stirring, heating to 40-60 ℃, slowly adding 1kg of corrosion inhibitor, 1kg of silane coupling agent and 0.1kg of wetting agent, continuously stirring for 10min to obtain a component A, and keeping the temperature for later use;
s2: adding 15kg of deionized water into another reactor, adding 2kg of color paste and 1kg of dispersing agent, and stirring for 10min to obtain a component B for later use;
s3: heating to 40-60 deg.C, slowly adding component B into A under constant temperature and stirring, stopping stirring, standing for 1-5min, rapidly starting stirring, and controlling the time of adding component B to operate for 1-3 times; after the component B is added, the operation is recycled for 1 to 3 times to obtain a component C;
s4: under the condition of stirring, adding 5kg of pH regulator and deionized water into the component C, uniformly stirring, and regulating the pH to 7.5-8.0;
s5: stirring and filling to obtain the colored fingerprint-resistant coating.
Wherein 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 at least one selected from the group consisting of methacryloxyalkyl groups, aminoalkyl groups, epoxyhydrocarbon groups and sulfur-containing hydrocarbon groups; the wetting agent is at least one selected from NP-9, OP-9, NP-10 and OP-10; the water-based resin is at least one of water-based acrylic resin, water-based styrene-acrylic resin, water-based phenolic resin, water-based polyurethane, water-based organic silicon resin, water-based epoxy resin and water-based polyester resin; the color paste is water-based color paste, and is selected from one or more of red, green, yellow, blue, black and white paste for compounding; the dispersant is an anionic surfactant and is selected from DOWFAX 2A1, DOWFAX 3B2, DOWFAX 8390, DOWFAX C6L and DOWFAX C10L.
The stirring speeds of the stirring in S1, S2 and S4 are all 100-300rpm, and the stirring speed of the stirring in S3 is 300-800 rpm.
Example 2
A preparation method of a galvanized coiled material colored fingerprint-resistant coating comprises the following steps:
s1: adding 30kg of deionized water into a reactor, slowly adding 20kg of water-based resin into the deionized water under the stirring condition, uniformly stirring, heating to 40-60 ℃, slowly adding 3kg of corrosion inhibitor, 3kg of silane coupling agent and 0.55kg of wetting agent, continuously stirring for 20min to obtain a component A, and keeping the temperature for later use;
s2: adding 22.5kg of deionized water into another reactor, adding 4kg of color paste and 3kg of dispersing agent, and stirring for 20min to obtain a component B for later use;
s3: heating to 40-60 deg.C, slowly adding component B into A under constant temperature and stirring, stopping stirring, standing for 1-5min, rapidly starting stirring, and controlling the time of adding component B to operate for 1-3 times; after the component B is added, the operation is recycled for 1 to 3 times to obtain a component C;
s4: adding 7.5kg of pH regulator and deionized water into the component C under the condition of stirring, uniformly stirring, and regulating the pH to 7.5-8.0;
s5: stirring and filling to obtain the colored fingerprint-resistant coating.
Wherein 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 at least one selected from the group consisting of methacryloxyalkyl groups, aminoalkyl groups, epoxyhydrocarbon groups and sulfur-containing hydrocarbon groups; the wetting agent is at least one selected from NP-9, OP-9, NP-10 and OP-10; the water-based resin is at least one of water-based acrylic resin, water-based styrene-acrylic resin, water-based phenolic resin, water-based polyurethane, water-based organic silicon resin, water-based epoxy resin and water-based polyester resin; the color paste is water-based color paste, and is selected from one or more of red, green, yellow, blue, black and white paste for compounding; the dispersant is an anionic surfactant and is selected from DOWFAX 2A1, DOWFAX 3B2, DOWFAX 8390, DOWFAX C6L and DOWFAX C10L.
The stirring speeds of the stirring in S1, S2 and S4 are all 100-300rpm, and the stirring speed of the stirring in S3 is 300-800 rpm.
Example 3
A preparation method of a galvanized coiled material colored fingerprint-resistant coating comprises the following steps:
s1: adding 40kg of deionized water into a reactor, slowly adding 30kg of water-based resin into the deionized water under the stirring condition, uniformly stirring, heating to 40-60 ℃, slowly adding 5kg of corrosion inhibitor, 5kg of silane coupling agent and 1kg of wetting agent, continuously stirring for 30min to obtain a component A, and keeping the temperature for later use;
s2: adding 30kg of deionized water into another reactor, adding 6kg of color paste and 5kg of dispersing agent, and stirring for 30min to obtain a component B for later use;
s3: heating to 40-60 deg.C, slowly adding component B into A under constant temperature and stirring, stopping stirring, standing for 1-5min, rapidly starting stirring, and controlling the time of adding component B to operate for 1-3 times; after the component B is added, the operation is recycled for 1 to 3 times to obtain a component C;
s4: adding 10kg of pH regulator and deionized water into the component C under the condition of stirring, uniformly stirring, and regulating the pH to 7.5-8.0;
s5: stirring and filling to obtain the colored fingerprint-resistant coating.
Wherein 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 at least one selected from the group consisting of methacryloxyalkyl groups, aminoalkyl groups, epoxyhydrocarbon groups and sulfur-containing hydrocarbon groups; the wetting agent is at least one selected from NP-9, OP-9, NP-10 and OP-10; the water-based resin is at least one of water-based acrylic resin, water-based styrene-acrylic resin, water-based phenolic resin, water-based polyurethane, water-based organic silicon resin, water-based epoxy resin and water-based polyester resin; the color paste is water-based color paste, and is selected from one or more of red, green, yellow, blue, black and white paste for compounding; the dispersant is an anionic surfactant and is selected from DOWFAX 2A1, DOWFAX 3B2, DOWFAX 8390, DOWFAX C6L and DOWFAX C10L.
The stirring speeds of the stirring in S1, S2 and S4 are all 100-300rpm, and the stirring speed of the stirring in S3 is 300-800 rpm.
Example 4
A preparation method of a galvanized coiled material colored fingerprint-resistant coating comprises the following steps:
s1: adding 40kg of deionized water into a reactor, slowly adding 30kg of water-based resin into the deionized water under the stirring condition, uniformly stirring, heating to 40-60 ℃, slowly adding 5kg of corrosion inhibitor, 5kg of silane coupling agent and 1kg of wetting agent, continuously stirring for 30min to obtain a component A, and keeping the temperature for later use;
s2: adding 30kg of deionized water into another reactor, adding 6kg of color paste and 5kg of dispersing agent, and stirring for 30min to obtain a component B for later use;
s3: heating to 40-60 ℃, slowly adding the component B into the component A under the conditions of constant temperature and stirring, and uniformly stirring to obtain a component C;
s4: adding 10kg of pH regulator and deionized water into the component C under the condition of stirring, uniformly stirring, and regulating the pH to 7.5-8.0;
s5: stirring and filling to obtain the colored fingerprint-resistant coating.
Wherein 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 at least one selected from the group consisting of methacryloxyalkyl groups, aminoalkyl groups, epoxyhydrocarbon groups and sulfur-containing hydrocarbon groups; the wetting agent is at least one selected from NP-9, OP-9, NP-10 and OP-10; the water-based resin is at least one of water-based acrylic resin, water-based styrene-acrylic resin, water-based phenolic resin, water-based polyurethane, water-based organic silicon resin, water-based epoxy resin and water-based polyester resin; the color paste is water-based color paste, and is selected from one or more of red, green, yellow, blue, black and white paste for compounding; the dispersant is an anionic surfactant and is selected from DOWFAX 2A1, DOWFAX 3B2, DOWFAX 8390, DOWFAX C6L and DOWFAX C10L.
The stirring speeds of the stirring in S1, S2 and S4 are all 100-300rpm, and the stirring speed of the stirring in S3 is 300-800 rpm.
Example 5
A preparation method of a galvanized coiled material colored fingerprint-resistant coating comprises the following steps:
s1: adding 40kg of deionized water into a reactor, slowly adding 30kg of water-based resin into the deionized water under the stirring condition, uniformly stirring, slowly adding 5kg of corrosion inhibitor, 5kg of silane coupling agent and 1kg of wetting agent, continuously stirring for 30min to obtain a component A, and keeping the temperature for later use;
s2: adding 30kg of deionized water into another reactor, adding 6kg of color paste and 5kg of dispersing agent, and stirring for 30min to obtain a component B for later use;
s3: slowly adding the component B into the component A under the conditions of normal temperature and stirring, stopping stirring and standing for 1-5min, quickly starting stirring, and controlling the period of adding the component B to circularly operate for 1-3 times; after the component B is added, the operation is recycled for 1 to 3 times to obtain a component C;
s4: adding 10kg of pH regulator and deionized water into the component C under the condition of stirring, uniformly stirring, and regulating the pH to 7.5-8.0;
s5: stirring and filling to obtain the colored fingerprint-resistant coating.
Wherein 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 at least one selected from the group consisting of methacryloxyalkyl groups, aminoalkyl groups, epoxyhydrocarbon groups and sulfur-containing hydrocarbon groups; the wetting agent is at least one selected from NP-9, OP-9, NP-10 and OP-10; the water-based resin is at least one of water-based acrylic resin, water-based styrene-acrylic resin, water-based phenolic resin, water-based polyurethane, water-based organic silicon resin, water-based epoxy resin and water-based polyester resin; the color paste is water-based color paste, and is selected from one or more of red, green, yellow, blue, black and white paste for compounding; the dispersant is an anionic surfactant and is selected from DOWFAX 2A1, DOWFAX 3B2, DOWFAX 8390, DOWFAX C6L and DOWFAX C10L.
The stirring speeds of the stirring in S1, S2 and S4 are all 100-300rpm, and the stirring speed of the stirring in S3 is 300-800 rpm.
Example 6
A preparation method of a galvanized coiled material colored fingerprint-resistant coating comprises the following steps:
s1: adding 40kg of deionized water into a reactor, slowly adding 30kg of water-based resin into the deionized water under the stirring condition, uniformly stirring, heating to 40-60 ℃, slowly adding 5kg of corrosion inhibitor, 5kg of silane coupling agent and 1kg of wetting agent, continuously stirring for 30min to obtain a component A, and keeping the temperature for later use;
s2: adding 30kg of deionized water into another reactor, adding 6kg of color paste and 5kg of dispersing agent, and stirring for 30min to obtain a component B for later use;
s3: heating to 40-60 deg.C, slowly adding component B into A under constant temperature and stirring, stopping stirring, standing for 1-5min, rapidly starting stirring, and controlling the time of adding component B to operate for 1-3 times; after the component B is added, the operation is recycled for 1 to 3 times to obtain a component C;
s4: adding 10kg of pH regulator and deionized water into the component C under the condition of stirring, uniformly stirring, and regulating the pH to 7.5-8.0;
s5: stirring and filling to obtain the colored fingerprint-resistant coating.
Wherein 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 at least one selected from the group consisting of methacryloxyalkyl groups, aminoalkyl groups, epoxyhydrocarbon groups and sulfur-containing hydrocarbon groups; the wetting agent is at least one selected from NP-9, OP-9, NP-10 and OP-10; the water-based resin is at least one of water-based acrylic resin, water-based styrene-acrylic resin, water-based phenolic resin, water-based polyurethane, water-based organic silicon resin, water-based epoxy resin and water-based polyester resin; the color paste is water-based color paste, and is selected from one or more of red, green, yellow, blue, black and white paste for compounding; the dispersant is BYK190 dispersant.
The stirring speeds of the stirring in S1, S2 and S4 are all 100-300rpm, and the stirring speed of the stirring in S3 is 300-800 rpm.
Detection test
The colored fingerprint-resistant coating produced according to the methods of examples 1 to 6 and the commercially available colored fingerprint-resistant coating produced by a certain scientific and technological company were stored for 3 months, 6 months, 12 months and 18 months, respectively, galvanized steel sheets were subjected to the same pretreatment, then, wire bar three-way drawing was performed using the above-mentioned fingerprint-resistant coating, PMT was cured at 120 degrees to obtain samples with a coating layer, the thickness of the coating layer was 1.0. + -. 0.2. mu.m, the color of the coating layer was observed, and the results of the observation 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 (7)
1. A preparation method of a galvanized coiled material colored fingerprint-resistant coating is characterized by comprising the following steps: the method comprises the following steps:
s1: adding 20-40 parts of deionized water into a reactor, weighing the raw materials of the water-based resin according to the parts by weight, slowly adding 10-30 parts of the water-based resin into the deionized water under the condition of stirring, uniformly stirring, then heating to 40-60 ℃, slowly adding the corrosion inhibitor, the silane coupling agent and the wetting agent, continuously stirring for 10-30min to obtain a component A, and preserving heat for later use;
s2: adding 15-30 parts of deionized water into another reactor, adding 2-6 parts of color paste and 1-5 parts of dispersing agent, and stirring for 10-30min to obtain a component B for later use;
s3: heating to 40-60 deg.C, slowly adding component B into A under constant temperature and stirring, stopping stirring, standing for 1-5min, rapidly starting stirring, and controlling the time of adding component B to operate for 1-3 times; after the component B is added, the operation is recycled for 1 to 3 times to obtain a component C;
s4: under the condition of stirring, adding 5-10 parts of pH regulator and deionized water into the component C, uniformly stirring, and regulating the pH to 7.5-8.0;
s5: stirring and filling to obtain the colored fingerprint-resistant coating.
2. The preparation method of the galvanized coil colored fingerprint-resistant coating as claimed in claim 1, characterized in that: the addition amounts of the corrosion inhibitor, the silane coupling agent and the wetting agent in the S1 are respectively 1-5 parts of the corrosion inhibitor, 1-5 parts of the silane coupling agent and 0.1-1 part of the wetting agent.
3. The preparation method of the galvanized coil colored fingerprint-resistant coating as claimed in claim 2, 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; the silane coupling agent is selected from at least one of methacryloxyalkyl, amino hydrocarbon, epoxy hydrocarbon and sulfur-containing hydrocarbon; the wetting agent is at least one selected from NP-9, OP-9, NP-10 and OP-10.
4. The preparation method of the galvanized coil colored fingerprint-resistant coating as claimed in claim 1, characterized in that: the water-based resin in S1 is at least one of water-based acrylic resin, water-based styrene-acrylic resin, water-based phenolic resin, water-based polyurethane, water-based organic silicon resin, water-based epoxy resin and water-based polyester resin.
5. The preparation method of the galvanized coil colored fingerprint-resistant coating as claimed in claim 1, characterized in that: the color paste in the S2 is water-based color paste, and is selected from one or more of red, green, yellow, blue, black and white pastes for compounding.
6. The preparation method of the galvanized coil colored fingerprint-resistant coating as claimed in claim 1, characterized in that: the dispersant in S2 is an anionic surfactant, and is selected from DOWFAX 2A1, DOWFAX 3B2, DOWFAX 8390, DOWFAX C6L and DOWFAX C10L.
7. The preparation method of the galvanized coil colored fingerprint-resistant coating as claimed in claim 1, characterized in that: the stirring speeds of the stirring in S1, S2 and S4 are all 100-300rpm, and the stirring speed of the stirring in S3 is 300-800 rpm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115093725A (en) * | 2022-06-23 | 2022-09-23 | 上海箬宇新材料有限公司 | 1800 ℃ resistant phosphate heat-insulating fireproof coating and preparation method thereof |
| CN116769381A (en) * | 2023-07-13 | 2023-09-19 | 合肥普庆新材料科技有限公司 | Sweat stain resistant chromium-free fingerprint-resistant liquid for galvanized sheet and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115093725A (en) * | 2022-06-23 | 2022-09-23 | 上海箬宇新材料有限公司 | 1800 ℃ resistant phosphate heat-insulating fireproof coating and preparation method thereof |
| CN115093725B (en) * | 2022-06-23 | 2023-03-10 | 上海箬宇新材料有限公司 | 1800 ℃ resistant phosphate heat-insulating fireproof coating and preparation method thereof |
| CN116769381A (en) * | 2023-07-13 | 2023-09-19 | 合肥普庆新材料科技有限公司 | Sweat stain resistant chromium-free fingerprint-resistant liquid for galvanized sheet and preparation method thereof |
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