CN114736575A - High-gloss boiling-resistant water-based silver powder baking paint for stainless steel tableware and preparation method thereof - Google Patents
High-gloss boiling-resistant water-based silver powder baking paint for stainless steel tableware and preparation method thereof Download PDFInfo
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- CN114736575A CN114736575A CN202210535169.1A CN202210535169A CN114736575A CN 114736575 A CN114736575 A CN 114736575A CN 202210535169 A CN202210535169 A CN 202210535169A CN 114736575 A CN114736575 A CN 114736575A
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- 239000003973 paint Substances 0.000 title claims abstract description 76
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 63
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 238000009835 boiling Methods 0.000 title claims abstract description 53
- 239000010935 stainless steel Substances 0.000 title claims abstract description 43
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 26
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000843 powder Substances 0.000 claims abstract description 19
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 16
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003921 oil Substances 0.000 claims abstract description 13
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000004094 surface-active agent Substances 0.000 claims abstract description 12
- 239000002966 varnish Substances 0.000 claims abstract description 11
- 239000002318 adhesion promoter Substances 0.000 claims abstract description 10
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 9
- 239000000080 wetting agent Substances 0.000 claims abstract description 9
- 229920000877 Melamine resin Polymers 0.000 claims abstract description 8
- 239000002270 dispersing agent Substances 0.000 claims abstract description 8
- IVJISJACKSSFGE-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine Chemical class O=C.NC1=NC(N)=NC(N)=N1 IVJISJACKSSFGE-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229920003009 polyurethane dispersion Polymers 0.000 claims abstract description 8
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 7
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 7
- 239000004593 Epoxy Substances 0.000 claims abstract description 7
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 7
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 7
- 239000006184 cosolvent Substances 0.000 claims abstract description 7
- 239000010452 phosphate Substances 0.000 claims abstract description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 5
- 238000009713 electroplating Methods 0.000 claims description 18
- -1 aluminum silver Chemical compound 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 11
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 9
- 239000006185 dispersion Substances 0.000 claims description 9
- 239000004952 Polyamide Substances 0.000 claims description 6
- 229920002647 polyamide Polymers 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 229920006243 acrylic copolymer Polymers 0.000 claims description 5
- 229910021485 fumed silica Inorganic materials 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 229920005749 polyurethane resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 4
- CUVLMZNMSPJDON-UHFFFAOYSA-N 1-(1-butoxypropan-2-yloxy)propan-2-ol Chemical compound CCCCOCC(C)OCC(C)O CUVLMZNMSPJDON-UHFFFAOYSA-N 0.000 claims description 3
- CUDYYMUUJHLCGZ-UHFFFAOYSA-N 2-(2-methoxypropoxy)propan-1-ol Chemical compound COC(C)COC(C)CO CUDYYMUUJHLCGZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000013329 compounding Methods 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 230000003472 neutralizing effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 16
- 238000005507 spraying Methods 0.000 abstract description 8
- 238000000576 coating method Methods 0.000 abstract description 7
- 239000011248 coating agent Substances 0.000 abstract description 6
- 238000005034 decoration Methods 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 239000000758 substrate Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- UYTPUPDQBNUYGX-UHFFFAOYSA-N guanine Chemical compound O=C1NC(N)=NC2=C1N=CN2 UYTPUPDQBNUYGX-UHFFFAOYSA-N 0.000 description 3
- 238000007665 sagging Methods 0.000 description 3
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical group CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229960002887 deanol Drugs 0.000 description 2
- 239000013530 defoamer Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000012972 dimethylethanolamine Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000000788 chromium alloy Substances 0.000 description 1
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 239000013022 formulation composition Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- RYZCLUQMCYZBJQ-UHFFFAOYSA-H lead(2+);dicarbonate;dihydroxide Chemical compound [OH-].[OH-].[Pb+2].[Pb+2].[Pb+2].[O-]C([O-])=O.[O-]C([O-])=O RYZCLUQMCYZBJQ-UHFFFAOYSA-H 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 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
-
- 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
- C09D5/36—Pearl essence, e.g. coatings containing platelet-like pigments for pearl lustre
-
- 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
- C09D5/38—Paints containing free metal not provided for above in groups C09D5/00 - C09D5/36
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/45—Anti-settling agents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0812—Aluminium
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention belongs to the technical field of water-based paint, and particularly discloses high-gloss boiling-resistant water-based silver powder baking paint for stainless steel tableware. The baking varnish consists of the following components in percentage by weight: 30-50% of water dispersible acrylic resin; 20-30% of a waterborne acrylic modified polyurethane dispersion; 0.2-0.6% of a neutralizer; 1.6-3.4% of cosolvent; 6-10% of partially methylated melamine formaldehyde resin; 0.1-0.3% of defoaming agent; 0.1-0.5% of a dispersant; 0.1-0.3% of oil-resistant wetting agent; 0.1-0.3% of fluorocarbon surfactant; 1.5-2.5% of epoxy phosphate adhesion promoter; 9.0-15.0% of a waterborne aluminum paste intermediate; 1.0-3.0% of pearl powder; 0.1-0.3% of water-based boiling-resistant auxiliary agent; 0.6-2% of an anti-settling agent; 2.8-8.6% of water and other components. The product can meet various performance requirements of the water-based coating film for the stainless steel tableware through one-time spraying, and can be widely applied to decoration beautification and outer layer protection of the high-gloss silver powder effect on the surface of the stainless steel tableware. The invention also provides a preparation method of the baking varnish.
Description
Technical Field
The invention belongs to the technical field of water-based paint, and particularly relates to high-gloss boiling-resistant water-based silver powder baking paint for stainless steel tableware and a preparation method thereof.
Background
Stainless steel is made of iron-chromium alloy and other trace elements, and as the stainless steel has good metal performance and excellent corrosion resistance compared with other metals, and the manufactured utensils are beautiful and durable, more and more stainless steel is used for manufacturing tableware and gradually enters families. Spraying the water-based industrial baking varnish on the stainless steel tableware can further improve the decorative effect of the tableware, improve the chemical resistance and mechanical property of the surface of the tableware through a high-quality baking varnish film, meet the strict requirements of people on low-carbon environment-friendly paint products, and is a mainstream direction for upgrading the quality of the stainless steel tableware in the current market.
For the water-based paint used for coating the stainless steel tableware, the effect of the silver powder baking varnish is an important mark of the high-grade quality of the stainless steel tableware and an important technical challenge of the water-based amino baking varnish. The current water-based silver powder baking paint on the market has the common technical problems of poor silver powder arrangement effect, poor metal texture, low paint film glossiness of a single-coating product, poor covering power, substandard water boiling resistance, easy bottom sinking of silver powder in water-based paint liquid, improved scratch resistance and impact resistance of a paint film and the like.
Disclosure of Invention
The invention aims to: the high-gloss boiling-resistant waterborne silver powder baking paint for the stainless steel tableware can meet various performance requirements of waterborne coatings for the stainless steel tableware through one-time spraying, and a paint film of the high-gloss boiling-resistant waterborne silver powder baking paint has perfect metal texture, good silver powder arrangement effect, high glossiness of a single coating paint film, strong covering power, good boiling resistance, strong scratch resistance, excellent impact resistance, strong adhesive force, good sinking resistance, convenient construction and healthy and environment-friendly performance advantages, and can be widely applied to decoration and outer layer protection of the high-gloss effect of the surface of the stainless steel tableware. The invention also provides a preparation method of the high-gloss boiling-resistant water-based silver powder baking paint for the stainless steel tableware.
In order to achieve the purpose, the invention adopts the following technical scheme:
the high-gloss boiling-resistant water-based silver powder baking paint for the stainless steel tableware comprises the following components in percentage by weight:
wherein the sum of the weight percentages of the components is one hundred percent.
The water dispersible acrylic resin is KN2648W acrylic copolymer provided by Guangdong Korea resin company; the aqueous acrylic modified polyurethane dispersion is 3UA49W aqueous acrylic modified polyurethane resin provided by Guangdong Tonder New materials, Inc.
The KN2648W acrylic copolymer has the characteristics of excellent silver powder arrangement effect, good flexibility, good adhesion, low smell, high glossiness of a paint film and the like, and has excellent boiling resistance, alcohol resistance and chemical resistance. The 3UA49W waterborne acrylic modified polyurethane resin has the characteristics of excellent paint film flexibility, strong adhesive force, good pigment and filler wettability, high surface drying speed, good silver powder directionality, excellent weather resistance and the like; compared with a PUD system, the 3UA49W acrylic acid copolymer is low in price and has obvious cost advantage. The 3UA49W acrylic copolymer and the KN2648W waterborne acrylic modified polyurethane resin are mixed and used, the compatibility of the two resins is good, the mixed and spliced resin mixture has a synergistic effect on performance, the glossiness and the water boiling resistance of a paint film can be further improved, the silver powder arrangement effect is better, the metal texture of the silver powder can be better reflected, and the flexibility and the impact resistance of the paint film are excellent.
In the invention, the partially methylated melamine-formaldehyde resin is partially methylated melamine-formaldehyde resin produced by Cyanite company in America; the neutralizer is dimethylethanolamine.
In the invention, the cosolvent consists of dipropylene glycol methyl ether and dipropylene glycol butyl ether according to the weight ratio of (1.0-1.7) to 1.
The antifoaming agent is TEGO FOAMEX 810 antifoaming agent.
The dispersant is BYK-190 dispersant.
The oil-resistant wetting agent is an SN-1070 oil-resistant wetting agent provided by environmental protection materials of Guangzhou Xeno Co.
The SN-1070 oil-resistant wetting agent is a non-silicon polymer oil-resistant agent, has special effect on oil pit shrinkage caused by defoaming agents, release agents, oil stains on the surface of a substrate and the like, can strongly reduce the surface tension of a system, thereby providing strong substrate wetting and pollution resistance capability, providing a reliable wetting and leveling effect in most polluted environments, and not influencing recoating property.
In the invention, the fluorocarbon surfactant is BNK-4021 fluorocarbon surfactant provided by America Meilixan chemical group Co.
The BNK-4021 fluorocarbon surfactant is a multifunctional assistant, has the functions of rapid leveling, defoaming and foam stabilizing, can reduce surface tension, and has excellent wettability and dispersibility to pigments and fillers. The BNK-4021 fluorocarbon surfactant with extremely low dosage is added into the formula of the water-based baking paint, so that the uniform arrangement of the silver powder in a paint film can be promoted, the accumulation of the silver powder is reduced, and the glossiness of the paint film is improved.
In the invention, the epoxy phosphate ester adhesion promoter is an EP 805 adhesion promoter provided by Guangdong Shunjing solidification engineering and technology Limited company. In the product, the epoxy phosphate adhesion promoter has obvious advantages compared with silane adhesion promoters, can obviously improve the flexibility of a paint film, improve the stability of silver powder in the paint film, enhance the adhesion of the paint film to a stainless steel substrate, and further improve the strength and the scratch resistance of the paint film.
The waterborne aluminum paste intermediate is prepared by mixing waterborne imitation electroplating aluminum paste and ethylene glycol monobutyl ether according to the weight ratio of (5-7) to (4-8). Namely, the weight ratio of the water-based imitation electroplating aluminum silver paste is 5.0-7.0% of that of the main paint, and the weight ratio of the ethylene glycol monobutyl ether is 4.0-8.0% of that of the main paint.
Preferably, the aqueous aluminum paste intermediate is prepared by mixing aqueous imitation electroplating aluminum paste and ethylene glycol monobutyl ether in a weight ratio of 1: 1.
The waterborne imitation electroplating silver paste is JCS-8308 waterborne aluminum paste provided by Junchi practical Co Ltd of Dongguan city, and the average fineness of the waterborne aluminum paste is 8 mu m. The ethylene glycol monobutyl ether is specially used as a solvent of the waterborne imitation electroplating aluminum silver paste, and the waterborne imitation electroplating aluminum silver paste is soaked and pre-dissolved for 24-30 hours before high-gloss boiling-resistant waterborne silver powder baking varnish for producing stainless steel tableware.
In the invention, the pearl powder is SC6300 pearl powder provided by Fuzhou Kuncui splendid finisher, and the average fineness of the pearl powder is 35 mu m.
In the invention, the blending use of the waterborne imitation electroplating aluminum silver paste and the pearl powder is another innovation point of the invention. In the case of commercially available aluminum paste, the finer the particle size of the aluminum silver powder, the darker the hue of the aluminum silver powder is. In order to obtain the texture of the silver powder of the paint film with finer hand feeling, coating researchers and manufacturers often select the aluminum silver powder with smaller particle size to the greatest extent while pursuing the effect of the aluminum silver powder with white and bright color phase. This is a phenomenon that is almost unavoidable and a difficult problem. The method selects and mixes the pearl essence and the waterborne imitation electroplating aluminum silver paste according to a certain weight ratio, solves the problem of blackish and darker hue of the waterborne imitation electroplating aluminum silver paste with small particle size by utilizing the hue effect of pearl silver white of the pearl essence, and further enhances the density of solid powder and resin on the surface of a paint film and improves the comprehensive performance of the paint film by utilizing the fine grading matching of the particle size (the average fineness is 35 mu m) of the pearl essence and the particle size (the average fineness is 8 mu m) of the waterborne imitation electroplating aluminum silver paste on the fineness and adjusting the adding proportion of the two components to be optimal.
Furthermore, when the waterborne imitation electroplating aluminum silver paste and the pearl powder are compounded according to the weight ratio of (1.1-2.3) to 1, the best silver powder arrangement effect, paint film metal texture, paint film glossiness and water boiling resistance can be obtained.
In the invention, the aqueous boiling-resistant assistant is an A-831 aqueous boiling-resistant assistant provided by New Material Ltd of the national Fushan city.
The A-831 boiling-resistant assistant is a catalytic acid modified primary hydroxyl polymer solution, is suitable for industrial paints of most metal substrates, can improve the boiling-resistant performance of the water-based amino baking paint, and can also obviously improve the salt spray resistance and the adhesive force to the substrate of a paint film by the A-831.
The anti-settling agent is prepared by compounding 7800 water-based polyamide anti-settling agent provided by the New Material science and technology Limited company of the Longhai of Dongguan city and M-5 fumed silica provided by Kabot, wherein the weight ratio of the two is (1.1-2.3): 1.
In the invention, the 7800 aqueous polyamide anti-settling agent has good anti-settling performance, is easy to disperse, does not deluster, and is beneficial to orientation and arrangement of silver powder; the M-5 fumed silica also has certain effects on the anti-settling, orientation and arrangement of the silver powder. When 7800 aqueous polyamide anti-settling agent and M-5 fumed silica are compounded in the aqueous silver powder baking varnish according to the weight percentage (0.4-1.2%) (0.2-0.8%), the anti-settling directional effect of the polyamide auxiliary agent and the anti-settling of a net-shaped structure (three-dimensional) generate obvious synergistic effect, the anti-settling problem and the anti-sagging problem in the aqueous silver powder baking varnish can be effectively solved, the orientation and arrangement of silver powder are promoted, and the influence on the gloss of a paint film is almost negligible.
The invention also provides a preparation method of the high-gloss boiling-resistant water-based silver powder baking varnish for the stainless steel tableware, which comprises the following specific steps:
a. preparation of aqueous aluminum paste intermediate
Adding waterborne imitation electroplating aluminum paste and ethylene glycol monobutyl ether into a dispersion cylinder, dispersing at a medium speed for 20-30 min, standing and soaking for 24-30 h to obtain a waterborne aluminum paste intermediate;
b. preparation of high-gloss boiling-resistant water-based silver powder baking paint
Adding water-dispersible acrylic resin, a water-based acrylic modified polyurethane dispersion, a neutralizing agent, a cosolvent, a part of methylated melamine formaldehyde resin, a defoaming agent, a dispersing agent, an oil-resistant wetting agent, a fluorocarbon surfactant, an epoxy phosphate adhesion promoter, a water-based aluminum paste intermediate prepared in the step a, pearl powder, a water-based boiling-resistant auxiliary agent, an anti-settling agent, water and other components into a dispersion cylinder in sequence according to weight percentage, and dispersing at medium speed until the fineness of a finished product reaches less than or equal to 20 mu m and the viscosity is 100-150 s;
the medium-speed dispersion speed is 800-1000 r/min.
Compared with the prior art, the invention has the beneficial effects that:
1) the freeze-thaw resistance stability and the storage stability are good, the anti-sagging performance is excellent, the anti-settling effect is good, the workability is easy, and the operation is convenient; the paint film of the product has strong adhesion to the substrate, good impact resistance and hardness up to 3H.
2) The product disclosed by the invention has excellent boiling resistance, a paint film is not foamed, not dropped and not lost, after being boiled for 1 hour at constant temperature in a boiling water state, the paint film is subjected to adhesion and scratch resistance tests when the temperature is reduced to a hand touchable temperature (40-60 ℃) after being boiled for 1 hour, the adhesion of the paint film is still grade 1, and the scratch resistance still meets the standard requirement of 'no scratch' (namely, the scratch resistance is subjected to a scratch test according to the GB/T9729 standard, and the detection result is 'no scratch').
3) The product paint film obtained by one-time spraying has the glossiness of more than 95 degrees (measured according to GB/T9754 regulations, 60 degrees), and can realize perfect covering of stainless steel base materials without bottom penetration.
4) The silver powder of the product is uniformly arranged, has no accumulation and does not generate flower; the paint film has strong metal texture, does not blacken and does not darken; the silver powder is covered uniformly and thickly and is not transparent. Can be widely applied to decoration and beautification and outer layer protection of high-gloss boiling-resistant water-based silver powder for stainless steel tableware.
Detailed Description
The present invention will be further described with reference to the following examples, but is not limited thereto.
The high-gloss boiling-resistant water-based silver powder baking paint for the stainless steel tableware comprises the following components in percentage by weight:
wherein the sum of the weight percentages of the components is one hundred percent.
Wherein the water dispersible acrylic resin is KN2648W acrylic copolymer provided by Karson resin Co., Ltd; the waterborne acrylic modified polyurethane dispersion is 3UA49W waterborne acrylic modified polyurethane resin provided by New Guangdong Tond material company Limited.
Wherein the partially methylated melamine formaldehyde resin is partially methylated melamine formaldehyde resin produced by Cyanote corporation; the neutralizer is dimethylethanolamine.
The cosolvent comprises dipropylene glycol methyl ether and dipropylene glycol butyl ether according to the weight ratio of (1.0-1.7) to 1.
Wherein the defoamer is TEGO FOAMEX 810 defoamer.
Wherein the dispersant is BYK-190 dispersant.
Wherein the oil-resistant wetting agent is SN-1070 oil-resistant wetting agent provided by environmental protection materials of Guangzhou Xeno Co.
Wherein the fluorocarbon surfactant is BNK-4021 fluorocarbon surfactant provided by America Meilixan chemical group Co.
Wherein the epoxy phosphate ester adhesion promoter is an EP 805 adhesion promoter provided by Guangdong Shunling curing engineering and technology Co.
In the embodiment, the aqueous aluminum paste intermediate is prepared by mixing aqueous imitation electroplating aluminum paste and ethylene glycol monobutyl ether in a weight ratio of 1: 1.
The waterborne imitation electroplating silver paste is JCS-8308 waterborne aluminum paste provided by Junchi practical limited company in Dongguan.
The pearl powder is SC6300 pearl powder provided by Kuncun color proficiency Co., Ltd.
Wherein the water-based boiling-resistant auxiliary agent is an A-831 water-based boiling-resistant auxiliary agent provided by New meaningful materials Co.
The anti-settling agent is prepared by compounding 7800 water-based polyamide anti-settling agent provided by New Material science and technology Limited in Longhai of Dongguan city and M-5 fumed silica provided by Kabot, wherein the weight ratio of the two is (1.1-2.3): 1.
The preparation method of the high-gloss boiling-resistant water-based silver powder baking paint for the stainless steel tableware comprises the following steps:
a. preparation of aqueous aluminum paste intermediate
Adding waterborne imitation electroplating aluminum paste and ethylene glycol monobutyl ether into a dispersion cylinder, dispersing at a medium speed for 20-30 min, standing and soaking for 24-30 h to obtain a waterborne aluminum paste intermediate;
b. preparation of high-gloss boiling-resistant water-based silver powder baking paint
Sequentially adding water-dispersible acrylic resin, a water-based acrylic modified polyurethane dispersoid, a neutralizer, a cosolvent, part of methylated melamine formaldehyde resin, a defoaming agent, a dispersant, an oil-resistant wetting agent, a fluorocarbon surfactant, an epoxy phosphate adhesion promoter, the water-based aluminum paste intermediate prepared in the step a, pearl powder, a water-based boiling-resistant auxiliary agent, an anti-settling agent, water and other components into a dispersion cylinder according to the weight percentage, dispersing for 30-50 min at a medium speed, sampling and detecting, and obtaining the high-gloss boiling-resistant water-based silver powder baking paint for the stainless steel tableware if the fineness of a finished product is less than or equal to 20 mu m and the viscosity is 100-150 s; the medium-speed dispersion speed is 800-1000 r/min.
Examples
In the specific embodiment, embodiments 1 to 5 are provided to prepare the high-gloss boiling-resistant water-based silver powder baking paint for stainless steel tableware, the formula composition of which is shown in table 1 and is calculated by the following raw materials in percentage by mass (%):
TABLE 1 Main paint formulation composition (unit:%)
According to the raw material formulas of the above-mentioned examples 1-5, the high-gloss boiling-resistant water-based silver powder baking paint for stainless steel tableware of the examples 1-5 is prepared according to the preparation method of the high-gloss boiling-resistant water-based silver powder baking paint for stainless steel tableware, and the performance test is performed.
Performance testing
The spraying construction and performance detection are carried out on the embodiments 1-5 prepared by the invention and similar products sold in the market. The coating substrate is stainless steel tableware; before spraying, oil removal, rust removal and polishing are needed, and dust-free cleaning and drying are ensured. Before spraying, the water-based baking paint is stirred uniformly, and the baking paint is diluted by deionized water until the viscosity is 45-50 s (2 # cup in a salt pan). The baking temperature is 150 ℃, the baking time is 25min, and the dry film thickness of the paint film is controlled to be 18-25 mu m.
The main performance index test results of examples 1 to 5 and similar products on the market are shown in table 2.
TABLE 2 test results
According to the test results in table 2, the high-gloss boiling-resistant waterborne silver powder baking paint for stainless steel tableware prepared in the embodiments 1 to 5 has good freeze-thaw resistance stability and storage stability, excellent anti-sagging performance, strong adhesion of a paint film to a substrate, good impact resistance, and hardness up to 3H compared with similar products on the market.
The product of the embodiment also has excellent boiling resistance, and a paint film does not foam, fall off or lose light yield when boiled for 1 hour at constant temperature in a boiling water state; after a paint film of the product is boiled in water for 1 hour, the adhesion and scratch resistance tests are carried out when the temperature is reduced to the temperature which can be touched by hands (40-60 ℃), the adhesion of the paint film is still grade 1, and the scratch resistance still meets the standard requirement of 'no scratch'; the paint film has extremely high gloss and excellent covering power; the glossiness of a product paint film obtained by one-time spraying is more than 95 degrees, and the stainless steel bottom material can be perfectly covered without penetration; the silver powder of the product is uniformly arranged, has no accumulation and does not generate flowers; the paint film has strong metal texture, does not blacken and does not darken; the silver powder is uniformly covered, thick and solid and does not penetrate the bottom. Can be widely applied to decoration and beautification and outer layer protection of high-gloss boiling-resistant water-based silver powder for stainless steel tableware.
The above preferred embodiments should be considered as examples of the embodiments of the present application, and any technical deductions, substitutions, improvements and the like similar to, similar to or based on the embodiments of the present application should be considered as the protection scope of the present invention.
Claims (10)
1. The high-gloss boiling-resistant water-based silver powder baking paint for the stainless steel tableware is characterized by comprising the following components in percentage by weight:
wherein the sum of the weight percentages of the components is one hundred percent.
2. The high gloss boiling-resistant waterborne silver powder baking paint for stainless steel tableware according to claim 1, characterized in that: the water dispersible acrylic resin is KN2648W acrylic copolymer provided by Guangdong Korea resin Co; the waterborne acrylic modified polyurethane dispersion is 3UA49W waterborne acrylic modified polyurethane resin provided by New Guangdong Tond material company, and the weight ratio of the waterborne acrylic modified polyurethane dispersion to the waterborne acrylic modified polyurethane dispersion is 1-2.5.
3. The high gloss boiling-resistant waterborne silver powder baking paint for stainless steel tableware according to claim 1, characterized in that: the cosolvent consists of dipropylene glycol butyl ether and dipropylene glycol methyl ether according to the weight ratio of (1-1.7) to 1.
4. The high gloss boiling-resistant waterborne silver powder baking paint for stainless steel tableware according to claim 1, characterized in that: the fluorocarbon surfactant is BNK-4021 fluorocarbon surfactant provided by America Meilixan chemical group Co.
5. The high gloss boiling-resistant waterborne silver powder baking paint for stainless steel tableware according to claim 1, characterized in that: the aqueous aluminum paste intermediate is prepared by mixing aqueous imitation electroplating aluminum paste and ethylene glycol monobutyl ether according to the weight ratio of (5-7) to (4-8).
6. The high gloss boiling-resistant waterborne silver powder baking paint for stainless steel tableware according to claim 5, characterized in that: the waterborne imitation electroplating silver paste is JCS-8308 waterborne aluminum paste with the average fineness of 8 mu m, which is provided by Junchi practical Co., Ltd of Dongguan.
7. The high gloss boiling-resistant waterborne silver powder baking paint for stainless steel tableware according to claim 6, characterized in that: the pearl powder is SC6300 pearl powder with the average fineness of 35 mu m, which is provided by Fuzhou Kuncui splendid finishment, Inc.; the waterborne imitation electroplating aluminum silver paste and the pearl powder are compounded according to the weight ratio of (1.1-2.3) to 1.
8. The high gloss boiling-resistant waterborne silver powder baking paint for stainless steel tableware according to claim 1, characterized in that: the water-based boiling-resistant auxiliary agent is an A-831 water-based boiling-resistant auxiliary agent provided by New meaningful materials Co.
9. The high gloss boiling-resistant waterborne silver powder baking paint for stainless steel tableware according to claim 1, characterized in that: the anti-settling agent is prepared by compounding 7800 water-based polyamide anti-settling agent provided by the New Material science and technology Limited company of the Longhai of Dongguan city and M-5 fumed silica provided by Kabot, wherein the weight ratio of the two is (1.1-2.3): 1.
10. A method for preparing a high gloss boiling-resistant waterborne silver powder baking varnish for stainless steel tableware according to any one of claims 1 to 9, characterized by comprising the steps of:
a. preparation of aqueous aluminum paste intermediate
Adding waterborne electroplating-imitating aluminum paste and ethylene glycol monobutyl ether into a dispersion cylinder, dispersing at a medium speed for 20-30 min, standing and soaking for 24-30 h to obtain a waterborne aluminum paste intermediate;
b. preparation of high-gloss boiling-resistant water-based silver powder baking paint
Adding water-dispersible acrylic resin, a water-based acrylic modified polyurethane dispersion, a neutralizing agent, a cosolvent, a part of methylated melamine formaldehyde resin, a defoaming agent, a dispersing agent, an oil-resistant wetting agent, a fluorocarbon surfactant, an epoxy phosphate adhesion promoter, a water-based aluminum paste intermediate prepared in the step a, pearl powder, a water-based boiling-resistant auxiliary agent, an anti-settling agent, water and other components into a dispersion cylinder in sequence according to weight percentage, and dispersing at medium speed until the fineness of a finished product reaches less than or equal to 20 mu m and the viscosity is 100-150 s; the medium-speed dispersion speed is 800-1000 r/min.
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