CN116640502A - Quick-drying high-gloss water-based high-temperature baking paint for two-coating one-baking process and preparation method thereof - Google Patents
Quick-drying high-gloss water-based high-temperature baking paint for two-coating one-baking process and preparation method thereof Download PDFInfo
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- CN116640502A CN116640502A CN202310661733.9A CN202310661733A CN116640502A CN 116640502 A CN116640502 A CN 116640502A CN 202310661733 A CN202310661733 A CN 202310661733A CN 116640502 A CN116640502 A CN 116640502A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 94
- 238000000034 method Methods 0.000 title claims abstract description 70
- 230000008569 process Effects 0.000 title claims abstract description 66
- 238000001035 drying Methods 0.000 title claims abstract description 65
- 238000000576 coating method Methods 0.000 title claims abstract description 62
- 239000011248 coating agent Substances 0.000 title claims abstract description 61
- 239000003973 paint Substances 0.000 title claims abstract description 58
- 238000002360 preparation method Methods 0.000 title description 12
- 239000002562 thickening agent Substances 0.000 claims abstract description 23
- 239000002966 varnish Substances 0.000 claims abstract description 15
- 239000002904 solvent Substances 0.000 claims abstract description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 11
- 239000010703 silicon Substances 0.000 claims abstract description 11
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 10
- 239000002270 dispersing agent Substances 0.000 claims abstract description 10
- 239000000080 wetting agent Substances 0.000 claims abstract description 10
- 239000000945 filler Substances 0.000 claims abstract description 9
- 239000000049 pigment Substances 0.000 claims abstract description 9
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 8
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 8
- 229920003180 amino resin Polymers 0.000 claims abstract description 8
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 8
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 6
- 239000008367 deionised water Substances 0.000 claims abstract description 6
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 239000006229 carbon black Substances 0.000 claims abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 4
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000001038 titanium pigment Substances 0.000 claims abstract 2
- 239000013530 defoamer Substances 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 12
- 239000002480 mineral oil Substances 0.000 claims description 7
- 235000010446 mineral oil Nutrition 0.000 claims description 7
- 239000004814 polyurethane Substances 0.000 claims description 7
- 229920002635 polyurethane Polymers 0.000 claims description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 5
- 230000008961 swelling Effects 0.000 claims description 5
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical group CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 claims description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 3
- -1 aluminum silver Chemical compound 0.000 claims description 3
- 239000011324 bead Substances 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 2
- 229920006158 high molecular weight polymer Polymers 0.000 claims description 2
- 238000005336 cracking Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 14
- 239000000126 substance Substances 0.000 description 10
- 238000012360 testing method Methods 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- 238000009472 formulation Methods 0.000 description 4
- 239000012855 volatile organic compound Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 229920003275 CYMEL® 325 Polymers 0.000 description 2
- 229920003270 Cymel® Polymers 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- DMKSVUSAATWOCU-HROMYWEYSA-N loteprednol etabonate Chemical compound C1CC2=CC(=O)C=C[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@@](C(=O)OCCl)(OC(=O)OCC)[C@@]1(C)C[C@@H]2O DMKSVUSAATWOCU-HROMYWEYSA-N 0.000 description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000006072 paste Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- XJKVPKYVPCWHFO-UHFFFAOYSA-N silicon;hydrate Chemical compound O.[Si] XJKVPKYVPCWHFO-UHFFFAOYSA-N 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/103—Anti-corrosive paints containing metal dust containing Al
-
- 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
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- 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
- C08K2003/0806—Silver
-
- 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
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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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)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides quick-drying high-gloss water-based high-temperature baking paint which can be used for a two-coating one-baking process, and the water-based high-temperature baking paint comprises the following components in percentage by weight: 40-60% of aqueous hydroxy acrylic resin, 10-15% of amino resin, 2-20% of pigment and filler, 20-30% of deionized water, 2-5% of aqueous auxiliary agent and the balance of solvent. Wherein, the water-based auxiliary agent comprises the following components in percentage by weight of the quick-drying high-gloss water-based high-temperature baking paint which can be used for a two-coating one-baking process: 0.5-1% of water-based dispersing agent, 0.3-0.7% of water-based defoaming agent, 0.3-0.5% of water-based wetting agent, 1-2% of water-based thickening agent and 0.3-0.6% of pH regulator; the pigment and filler is silicon-coated aluminum paste or a mixture of carbon black, titanium pigment and barium sulfate; the solvent comprises the following components in percentage by weight of the quick-drying high-gloss water-based high-temperature baking paint which can be used for a two-coating one-baking process: 1-5% of ethylene glycol butyl ether and 1-5% of ethanol. Compared with the water-based high-temperature baking varnish in the two-coating one-baking process in the prior art, the quick-drying high-gloss water-based high-temperature baking varnish has low solvent content, has ultralow VOC emission in the two-coating one-baking process, and has excellent appearance effect, strong adhesive force and strong cracking resistance.
Description
Technical Field
The invention belongs to the technical field of water-based high-temperature baking paint in a two-coating one-baking process, and particularly relates to quick-drying high-gloss water-based high-temperature baking paint capable of being used in a two-coating one-baking process and a preparation method thereof.
Background
The two-coating one-baking process is to spray a first layer of coating on a substrate, flash the coating at room temperature, spray a second layer of coating, and then enter a drying furnace for drying. The process simplifies the coating process by reducing the coating and drying links, can effectively improve the productivity, reduce the energy consumption and reduce the environmental footprint of a coating workshop. The two-coating one-baking process requires the water-based high-temperature baking paint to have the performances of quick drying, no bottom biting, no cracking and the like on the premise of meeting the matching performance of the coating. And with the increasing importance of people on environmental protection and the increasing strictness of environmental protection regulations, the requirements of paint suppliers and users on environmental protection are higher and higher, and the requirements on Volatile Organic Compounds (VOC) are higher and higher, so that the solvent content in the water-based high-temperature baking paint is lower and lower.
However, the water-based high-temperature baking paint in the prior art has the problems of over high solvent content in a two-coating one-baking process, poor appearance effect, poor adhesive force and easiness in cracking of a paint film.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides quick-drying high-gloss water-based high-temperature baking paint capable of being used for a two-coating one-baking process and a preparation method thereof.
The specific technical scheme of the invention is as follows:
the invention provides quick-drying high-gloss water-based high-temperature baking paint capable of being used for a two-coating one-baking process, which is characterized by comprising the following components in percentage by weight: 40-60% of aqueous hydroxy acrylic resin, 10-15% of amino resin, 2-20% of pigment and filler, 20-30% of deionized water, 2-5% of aqueous auxiliary agent and the balance of solvent. The preferable weight percentages of the components are: 42-55% of aqueous hydroxy acrylic resin, 10-14% of amino resin, 12-18% of pigment and filler, 20-26% of deionized water, 2.5-4.5% of aqueous auxiliary agent and the balance of solvent. Among them, the aqueous hydroxy acrylic resin is preferably Antkote 2057 produced by Wanhua chemical company or B18 produced by Xingfeng chemical company, and the amino resin is preferably Sanmu 5817W, sanmu 5747, cymel 327 or Cymel325.
The quick-drying high-gloss water-based high-temperature baking paint for the two-coating one-baking process is characterized in that pigment and filler is silicon-coated aluminum silver paste or carbon black, titanium dioxide and barium sulfate, the silicon-coated aluminum silver paste accounts for 3-5% of the quick-drying high-temperature water-based baking paint for the two-coating one-baking process, the carbon black accounts for 0.5-1% of the quick-drying high-temperature water-based baking paint for the two-coating one-baking process, the titanium dioxide accounts for 3-5% of the quick-drying high-temperature water-based baking paint for the two-coating one-baking process, and the barium sulfate accounts for 5-10% of the quick-drying high-temperature water-based baking paint for the two-coating one-baking process. Among them, the silicon-coated aluminum paste is preferably ZW-6115 manufactured by Shandong silver arrow metallic pigment Co.
The quick-drying high-gloss water-based high-temperature baking paint capable of being used for a two-coating one-baking process provided by the invention also has the technical characteristics that the water-based auxiliary agent comprises the following components in percentage by weight: 0.5 to 1 percent of water-based dispersing agent, 0.3 to 0.7 percent of water-based defoaming agent, 0.3 to 0.5 percent of water-based wetting agent, 1 to 2 percent of water-based thickening agent and 0.3 to 0.6 percent of pH regulator.
The quick-drying high-gloss water-based high-temperature baking paint capable of being used for a two-coating one-baking process provided by the invention also has the technical characteristics that the water-based defoaming agent at least comprises two different water-based defoaming agents, and the water-based defoaming agents comprise the following components in percentage by weight of the quick-drying high-gloss water-based high-temperature baking paint capable of being used for the two-coating one-baking process: 0.1 to 0.3 percent of organic silicon defoamer and 0.2 to 0.4 percent of mineral oil defoamer. Among them, the organosilicon defoamer preferably wins Airex 901w produced by special chemical company or common Coadd DF-022 by new material science and technology Co., ltd, and the mineral oil defoamer preferably basf foamer 2190 or common Coadd DF-420 by new material science and technology Co., ltd.
The quick-drying high-gloss water-based high-temperature baking paint capable of being used for a two-coating one-baking process provided by the invention also has the technical characteristics that the water-based thickening agent at least comprises two different water-based thickening agents, and the water-based thickening agents comprise the following components in percentage by weight: alkali swelling thickener 0.5-1 wt% and polyurethane thickener 0.5-1 wt%. The alkali swelling thickener is preferably Coadd H-360 produced by new material technology Co., ltd, and the polyurethane thickener is preferably RM-12w produced by Dow chemical Co., ltd or Coadd U-112 associated polyurethane thickener produced by new material technology Co., ltd.
The quick-drying high-gloss water-based high-temperature baking paint capable of being used for a two-coating one-baking process has the technical characteristics that the water-based dispersing agent is a nonionic high-molecular-weight polymer water-based dispersing agent which has a comb-shaped structure and provides excellent stability and color spreading performance, and BYK-192 produced by Pick company or Coadd D-74 which is commonly used as new material technology Co.
The quick-drying high-gloss water-based high-temperature baking paint capable of being used for a two-coating one-baking process has the technical characteristics that the water-based wetting agent is a low-foam high-efficiency organic silicon water-based wetting agent, and TEGO WET 280 produced by Yingzhang special chemical company or Coadd W-111 common to new material science and technology Co.
The quick-drying high-gloss water-based high-temperature baking paint capable of being used for a two-coating one-baking process has the technical characteristics that the pH regulator is N, N-dimethylethanolamine.
The quick-drying high-gloss water-based high-temperature baking paint capable of being used for a two-coating one-baking process provided by the invention also has the technical characteristics that the solvent comprises the following components in percentage by weight: 1-5% of ethylene glycol butyl ether and 1-5% of ethanol.
The invention also provides a preparation method of the quick-drying high-gloss water-based high-temperature baking paint which can be used for a two-coating one-baking process, and is characterized by comprising the following steps: step S1, sequentially adding deionized water, a water-based dispersing agent, an organosilicon antifoaming agent and a pH regulator into a stirring container, dispersing for 5-10min under the stirring condition of 500-800rpm/min, and then adding pigment and filler to disperse for 15min at high speed under the stirring condition of 1000-1500 rpm/min; s2, adding zirconium beads, dispersing at a high speed under the condition of 2000-2500rpm/min, filtering after the fineness is below 15 mu m, and pouring filtrate into a paint mixing cylinder; and S3, sequentially adding the water-based hydroxyl acrylic resin, the amino resin, the solvent, the mineral oil defoamer, the water-based wetting agent and the water-based thickening agent into a paint mixing cylinder under the stirring condition of 500-800rpm/min respectively, and dispersing for 10-15min to obtain the quick-drying high-gloss water-based high-temperature baking paint for a two-coating one-baking process.
Effects and effects of the invention
Compared with the water-based high-temperature baking varnish in the two-coating one-baking process in the prior art, the quick-drying high-gloss water-based high-temperature baking varnish provided by the invention has low solvent content, so that the quick-drying high-temperature baking varnish has ultralow VOC emission in the two-coating one-baking process, excellent paint film appearance effect, strong adhesive force (reaching level 0) and strong cracking resistance (crack film thickness reaching 75-80 mu m). In addition, the quick-drying high-gloss water-based high-temperature baking paint used for the two-coating one-baking process also has excellent substrate suitability, excellent drying speed and chemical resistance, excellent corrosion resistance, excellent construction latitude and workability, high film thickness at one time, excellent sagging resistance and excellent mechanical property. The quick-drying high-gloss water-based high-temperature baking paint used for the two-coating one-baking process can be widely applied to the fields of electronics, electrical appliances, steam fittings and the like.
Detailed Description
The terms used in the present invention generally have meanings commonly understood by those of ordinary skill in the art unless otherwise indicated.
In the following examples, various processes and methods, which are not described in detail, are conventional methods well known in the art.
The reagents used in the examples below are commercially available in general, and the experimental procedures and conditions not noted are referred to in the art as conventional procedures and conditions.
Wherein the aqueous hydroxy acrylic resin is Antkote 2057 produced by Wanhua chemical company or B18 produced by Xingfeng chemical company.
The amino resin is Sanmu 5817W, sanmu 5747, cymel 327 or Cymel325.
The organic silicon defoamer is Airex 901w produced by Yinzhen specialty chemical company or CoaddDF-022 produced by new material science and technology Co.
The mineral oil defoamer is Basoff foamer 2190 or Coadd DF-420, common to New Material technologies Co.
The alkali swelling thickener is CoaddH-360 which is commonly produced by new material technology Co.
The polyurethane thickener is RM-12w produced by Dow chemical company or CoaddU-112 association polyurethane thickener of new material science and technology Co.
The water-based dispersing agent is BYK-192 produced by Pick company or Coadd D-74 produced by new material technology Co.
The aqueous wetting agent is TEGO WET 280 produced by Yingzhang specialty Chemie or Coadd W-111, new materials technology Co.
The pH regulator is N, N-dimethylethanolamine.
The silicon-coated aluminum paste is ZW-6115 manufactured by Shandong silver arrow metallic pigment Co.
Example 1 ]
The formulation of the quick-drying high-gloss water-based high-temperature baking paint used for the two-coating one-baking process is shown in Table 1.
TABLE 1
The embodiment also provides a preparation method of the quick-drying high-gloss water-based high-temperature baking paint applicable to the two-coating one-baking process, which is prepared according to the formula proportion of the table 1 and comprises the following steps:
step S1, sequentially adding deionized water, a water-based dispersing agent, an organosilicon antifoaming agent and a pH regulator into a stirring container, dispersing for 5-10min under the stirring condition of 500-800rpm/min, and then adding pigment and filler to disperse for 15min at high speed under the stirring condition of 1000-1500 rpm/min;
s2, adding zirconium beads, dispersing at a high speed under the condition of 2000-2500rpm/min, filtering after the fineness is below 15 mu m, and pouring filtrate into a paint mixing cylinder;
and S3, respectively adding the water-based hydroxyl acrylic resin, the amino resin, the solvent, the mineral oil defoamer, the water-based wetting agent and the water-based thickening agent (alkali swelling thickening agent and polyurethane thickening agent) into a paint mixing tank under the stirring condition of 500-800rpm/min, and dispersing for 10-15min to obtain the quick-drying high-gloss water-based high-temperature baking paint capable of being used for a two-coating one-baking process.
Example 2 ]
This example provides another quick-drying, high gloss, aqueous, high temperature baking finish useful in a two coat, one bake process, the formulation of which is set forth in Table 2.
TABLE 2
The preparation method of the quick-drying high-gloss water-based high-temperature baking paint applicable to the two-coating one-baking process in the embodiment is prepared according to the formula proportion of the table 2, and the preparation steps are identical with those of the embodiment 1.
Example 3 ]
This example provides another quick-drying, high gloss, aqueous, high temperature baking finish useful in a two coat, one bake process, the formulation of which is set forth in Table 3.
TABLE 3 Table 3
The preparation method of the quick-drying high-gloss water-based high-temperature baking paint applicable to the two-coating one-baking process in the embodiment is prepared according to the formula proportion of the table 3, and the preparation steps are identical with those of the embodiment 1.
Example 4 ]
This example provides another quick-drying, high gloss, aqueous, high temperature baking finish useful in a two coat, one bake process, the formulation of which is set forth in Table 4.
TABLE 4 Table 4
The preparation method of the quick-drying high-gloss water-based high-temperature baking paint applicable to the two-coating one-baking process in the embodiment is prepared according to the formula proportion of the table 4, and the preparation steps are identical with those of the embodiment 1.
< test example >
The quick-drying high-gloss water-based high-temperature baking paint and the control group (PPG WB 9005) which can be used for a two-coating one-baking process and are prepared in the test example are coated on the same substrate surface according to the same method, and each performance test is carried out on the coating, and the test results are shown in Table 5.
Wherein, the detection base materials of the bending test, the cupping test and the impact test are tin plates, the dry film thickness is 20-30 mu m, the base materials used in other performance detection projects are sand blast steel plates, and the dry film thickness is 25-35 mu m.
TABLE 5
As can be seen from Table 5, the quick-drying high-gloss aqueous high-temperature baking varnish prepared in the above example was superior to the aqueous high-temperature baking varnish of the prior art in gloss, cupping property, salt spray resistance, coating adhesion, cracking resistance and drying speed. In addition, the quick-drying high-gloss water-based high-temperature baking paint used for the two-coating one-baking process has low solvent content, ultralow VOC emission in the two-coating one-baking process, and excellent mechanical property, chemical resistance, corrosion resistance and workability.
The foregoing is a detailed description of the embodiments, convenient those skilled in the art are able to make and use the present invention. Those skilled in the art, based on the present invention, should not be subjected to innovative work, but rather should be able to obtain improvements or modifications by means of analysis, analogies or limited enumeration, etc. within the scope of protection defined by the following claims.
Claims (10)
1. The quick-drying high-gloss water-based high-temperature baking paint for the two-coating one-baking process is characterized by comprising the following components in percentage by weight:
2. the quick-drying high-gloss aqueous high-temperature baking varnish for the two-coat one-bake process according to claim 1, wherein,
wherein the pigment filler is silicon-coated aluminum silver paste or a mixture of carbon black, titanium pigment and barium sulfate,
the weight percentage of the silicon-coated aluminum paste accounting for the quick-drying high-gloss water-based high-temperature baking paint which can be used for the two-coating one-baking process is 3 to 5 percent,
the carbon black accounts for 0.5 to 1 percent of the weight of the quick-drying high-gloss water-based high-temperature baking paint which can be used for a two-coating one-baking process,
the titanium dioxide accounts for 3-5% of the weight of the quick-drying high-gloss water-based high-temperature baking paint which can be used for the two-coating one-baking process,
the barium sulfate accounts for 5-10% of the weight of the quick-drying high-gloss water-based high-temperature baking paint which can be used for the two-coating one-baking process.
3. The quick-drying high-gloss aqueous high-temperature baking varnish for the two-coat one-bake process according to claim 1, wherein,
wherein, the water-based auxiliary agent comprises the following components in percentage by weight of the quick-drying high-gloss water-based high-temperature baking paint which can be used for a two-coating one-baking process:
4. a quick-drying high-gloss aqueous high-temperature baking varnish for a two-coat one-bake process according to claim 3, wherein,
wherein the aqueous defoamer comprises at least two different aqueous defoamers,
the water-based defoamer comprises the following components in percentage by weight of the quick-drying high-gloss water-based high-temperature baking paint which can be used for a two-coating one-baking process:
0.1 to 0.3 percent of organic silicon defoamer,
0.2 to 0.4 percent of mineral oil defoamer.
5. A quick-drying high-gloss aqueous high-temperature baking varnish for a two-coat one-bake process according to claim 3, wherein,
wherein the aqueous thickener comprises at least two different aqueous thickeners,
the water-based thickener comprises the following components in percentage by weight of the quick-drying high-gloss water-based high-temperature baking paint which can be used for a two-coating one-baking process:
alkali swelling thickening agent 0.5-1%,
0.5 to 1 percent of polyurethane thickener.
6. A quick-drying high-gloss aqueous high-temperature baking varnish for a two-coat one-bake process according to claim 3, wherein,
wherein the aqueous dispersing agent is a nonionic high molecular weight polymer aqueous dispersing agent.
7. A quick-drying high-gloss aqueous high-temperature baking varnish for a two-coat one-bake process according to claim 3, wherein,
wherein the aqueous wetting agent is a low-foam high-efficiency organic silicon aqueous wetting agent.
8. A quick-drying high-gloss aqueous high-temperature baking varnish for a two-coat one-bake process according to claim 3, wherein,
wherein the pH regulator is N, N-dimethylethanolamine.
9. The quick-drying high-gloss aqueous high-temperature baking varnish for the two-coat one-bake process according to claim 1, wherein,
wherein, the solvent comprises the following components in percentage by weight of the quick-drying high-gloss water-based high-temperature baking paint which can be used for a two-coating one-baking process:
1 to 5 percent of ethylene glycol butyl ether,
ethanol 1-5%.
10. A method for preparing the quick-drying high-gloss water-based high-temperature baking paint for a two-coating one-baking process as claimed in claims 1 to 9, which comprises the following steps:
step S1, sequentially adding deionized water, a water-based dispersing agent, an organosilicon antifoaming agent and a pH regulator into a stirring container, dispersing for 5-10min under the stirring condition of 500-800rpm/min, and then adding pigment and filler to disperse for 15min at high speed under the stirring condition of 1000-1500 rpm/min;
s2, adding zirconium beads, dispersing at a high speed under the condition of 2000-2500rpm/min, filtering after the fineness is below 15 mu m, and pouring filtrate into a paint mixing cylinder;
and S3, sequentially adding the water-based hydroxyl acrylic resin, the amino resin, the solvent, the mineral oil defoamer, the water-based wetting agent and the water-based thickening agent into a paint mixing cylinder under the stirring condition of 500-800rpm/min respectively, and dispersing for 10-15min to obtain the quick-drying high-gloss water-based high-temperature baking paint capable of being used for a two-coating one-baking process.
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