CN114574059A - Water-based decorative coating and preparation method thereof - Google Patents
Water-based decorative coating and preparation method thereof Download PDFInfo
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- CN114574059A CN114574059A CN202210227999.8A CN202210227999A CN114574059A CN 114574059 A CN114574059 A CN 114574059A CN 202210227999 A CN202210227999 A CN 202210227999A CN 114574059 A CN114574059 A CN 114574059A
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- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 105
- 238000000576 coating method Methods 0.000 title claims abstract description 94
- 239000011248 coating agent Substances 0.000 title claims abstract description 90
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000002250 absorbent Substances 0.000 claims description 55
- 230000002745 absorbent Effects 0.000 claims description 55
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 50
- -1 polyethylene Polymers 0.000 claims description 41
- 238000002156 mixing Methods 0.000 claims description 39
- 239000000049 pigment Substances 0.000 claims description 39
- 239000002270 dispersing agent Substances 0.000 claims description 36
- 239000003973 paint Substances 0.000 claims description 35
- 239000002518 antifoaming agent Substances 0.000 claims description 34
- 239000000839 emulsion Substances 0.000 claims description 34
- 239000004698 Polyethylene Substances 0.000 claims description 33
- 229920000573 polyethylene Polymers 0.000 claims description 33
- 238000003756 stirring Methods 0.000 claims description 32
- 239000008367 deionised water Substances 0.000 claims description 24
- 229910021641 deionized water Inorganic materials 0.000 claims description 24
- 239000003795 chemical substances by application Substances 0.000 claims description 21
- 239000002562 thickening agent Substances 0.000 claims description 21
- 238000009736 wetting Methods 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 18
- 229910000278 bentonite Inorganic materials 0.000 claims description 16
- 239000000440 bentonite Substances 0.000 claims description 16
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 16
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 claims description 16
- 239000012965 benzophenone Substances 0.000 claims description 16
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 16
- 239000012964 benzotriazole Substances 0.000 claims description 16
- 239000002002 slurry Substances 0.000 claims description 16
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 15
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 13
- 229920000388 Polyphosphate Polymers 0.000 claims description 11
- 229920001400 block copolymer Polymers 0.000 claims description 11
- 239000013530 defoamer Substances 0.000 claims description 11
- 239000001205 polyphosphate Substances 0.000 claims description 11
- 235000011176 polyphosphates Nutrition 0.000 claims description 11
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 claims description 8
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 8
- 229960002887 deanol Drugs 0.000 claims description 8
- 239000012972 dimethylethanolamine Substances 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 8
- 239000002023 wood Substances 0.000 claims description 8
- 239000006229 carbon black Substances 0.000 claims description 7
- 230000000996 additive effect Effects 0.000 claims description 6
- 239000004408 titanium dioxide Substances 0.000 claims description 6
- 239000012752 auxiliary agent Substances 0.000 claims description 5
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 5
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 17
- 230000000694 effects Effects 0.000 description 11
- 239000011268 mixed slurry Substances 0.000 description 10
- 229920000058 polyacrylate Polymers 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- 229920000728 polyester Polymers 0.000 description 7
- 230000007547 defect Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 235000010215 titanium dioxide Nutrition 0.000 description 6
- 239000000047 product Substances 0.000 description 5
- DAFHKNAQFPVRKR-UHFFFAOYSA-N (3-hydroxy-2,2,4-trimethylpentyl) 2-methylpropanoate Chemical group CC(C)C(O)C(C)(C)COC(=O)C(C)C DAFHKNAQFPVRKR-UHFFFAOYSA-N 0.000 description 4
- 239000004721 Polyphenylene oxide Substances 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 229920000570 polyether Polymers 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 3
- 239000000080 wetting agent Substances 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- 230000006750 UV protection Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 150000002484 inorganic compounds Chemical class 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- 238000007761 roller coating Methods 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 230000009974 thixotropic effect Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000012801 ultraviolet ray absorbent 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
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/41—Organic pigments; Organic dyes
-
- 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
- C09D7/48—Stabilisers against degradation by oxygen, light or heat
-
- 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
- C09D7/65—Additives macromolecular
-
- 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
Landscapes
- 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)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of coatings, in particular to a high-weather-resistance water-based acrylic decorative coating and a preparation method thereof.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a water-based decorative coating and a preparation method thereof.
Background
In the early development, the role of the coating is mainly decoration, and then research and improvement on various properties of the coating are started due to other needs. The decoration coating in the industry at present refers to a coating which can protect the front surface outside a building, make the appearance of the building beautiful and tidy and protect the wall surface of the building at the same time.
With the continuous development of society, the requirement for environmental protection is continuously improved, the oily decorative coating is gradually replaced, the water-based decorative coating is more and more popular with consumers, particularly, the water-based decorative coating taking water-based acrylic acid as a main film forming substance is a popular decorative coating product in the market due to the characteristics of good adhesion, low price and friendly smell, but due to the defect of weather resistance of the water-based acrylic emulsion, the problems of serious abrasion and short service life of the coating during outdoor use are gradually exposed, so that the water-based acrylic decorative coating can not meet the market requirement, and further popularization and use of the water-based acrylic decorative coating are hindered.
Disclosure of Invention
Aiming at the technical problems that the weather resistance, the wear resistance, the short service life and the like of the water-based decorative coating in the prior art can not meet the market demand, the invention provides the high-weather-resistance water-based acrylic decorative coating and the preparation method thereof, the coating film of the coating has outstanding hardness and wear resistance, and the weather resistance and the service life of the coating film are obviously superior to those of similar products in the field.
In order to achieve the purpose of the invention, the embodiment of the invention adopts the following technical scheme:
the embodiment of the invention provides a high-weather-resistance water-based acrylic decorative coating which specifically comprises the following components, by mass, 45-60% of a water-based acrylic emulsion, 0.1-0.25% of a defoaming agent, 0.5-0.85% of a wetting dispersant, 0.3-0.75% of a flatting agent, 0.4-1% of a pH regulator, 3-5.5% of an ultraviolet absorbent, 5-10% of a pigment, 6-11% of barium sulfate, 3.8-6.6% of polyethylene wax, 3.2-4.5% of a film-forming assistant, 0.2-0.4% of a thickening agent, 0.3-0.9% of organic bentonite and the balance deionized water; the ultraviolet absorbent is a mixture of benzophenone ultraviolet absorbent and benzotriazole ultraviolet absorbent, and the polyethylene wax is a double-bond polyethylene wax.
Compared with the prior art, the ultraviolet absorbent in the high-weather-resistance water-based acrylic decorative coating provided by the invention is a mixture of benzophenone and benzotriazole ultraviolet absorbents, the ultraviolet resistance of a paint film is improved through the combined action of the benzophenone and the benzotriazole ultraviolet absorbents, the ultraviolet rays with the wavelength of 240-400 nm can be jointly absorbed, and the high-weather-resistance water-based acrylic decorative coating has the characteristics of good water stability and small volatility; the polyethylene wax containing the double-bond structure can generate synergistic effect with an ultraviolet absorbent while ensuring the hardness and the wear resistance of the coating, further enhance the ultraviolet absorption capability of the coating, obviously improve the aging resistance and the service life of the coating, and obviously improve the hardness, the wear resistance, the weather resistance and the service life of a paint film formed by the obtained water-based decorative paint under the mutual cooperation and interaction of other additives.
Preferably, the mass ratio of the benzophenone ultraviolet absorbent to the benzotriazole absorbent in the ultraviolet absorbent is 1-1.5: 1.
preferably, the polyethylene wax is a HONEYWELL MALEIC ANHYDRIDE GRAFTED wax A-C575A.
Preferably, the mass ratio of the defoaming agent to the total mass of the mixture is 3-4: 1, hydroxy siloxane polyacrylate and a silicone defoaming agent; more preferably, the hydroxy silicone polyacrylate is Tego-902w from Digao, and the silicone defoamer is BYK-028 from Pico.
The mixture of the hydroxyl siloxane polyacrylate and the organosilicon defoamer in a specific mass ratio has a strong foam inhibiting and defoaming effect in the coating system, can avoid the defects of shrinkage cavities and pinholes on the surface of a paint film, and ensures the glossiness and the physicochemical properties of the paint film.
Preferably, the wetting dispersant consists of a high molecular weight block copolymer solution containing pigment affinity groups and a polyphosphate dispersant in a mass ratio of 1-2: 1; more preferably, the solution of the high molecular weight block copolymer containing pigment affinity groups is BYK-190 from Pico, and the polyester modified polyphosphate dispersing agent is AFCONA-5010 from Effolna.
The wetting dispersant obtained by combining the macromolecular block copolymer emulsion with pigment affinity groups and the polyphosphate dispersant in a specific mass ratio can ensure the dispersion effect of the pigment in the coating, promote the mutual penetration between a film-forming substance and other inorganic compounds and increase the glossiness of a paint film.
Preferably, the mass ratio of the leveling agent to the base material is 2-3: 1 and a solvent-free organic modified siloxane solution; further preferably, the polyether modified siloxane solution is BYK-346 from Pico, and the solvent-free organomodified siloxane is EFKA-3580.
Preferably, the pH regulator is prepared from the following components in a mass ratio of 1-2: 1 of dimethylethanolamine and triethanolamine.
Preferably, the pigment is one of carbon black, wood red powder, titanium dioxide and scarlet powder, wherein the carbon black can be MA-100, the wood red powder can be RR3597/5597, the titanium dioxide can be LR-996/706, and the scarlet powder can be MH-RC/MH-5R.
The specific pigment component in the scheme contains metal oxide and metal ions, and can play a certain bridging role in the coating, so that the fullness and the glossiness of a paint film are increased.
Preferably, the particle size of the barium sulfate is 1500-1600 meshes.
The barium sulfate with the mesh of 1500-1600 has better dispersion effect in the water-based acrylic emulsion, can be uniformly filled in molecular gaps inside a paint film, and improves the compactness and hardness of the paint film.
Preferably, the coalescent is Texanol from Istman.
The TEXANOL has a high boiling point and low solubility in water, can effectively improve the film-forming property of resin, and can enhance the chalking resistance of a paint film while ensuring the gloss and strength of the paint film.
Preferably, the thickener is a polyurethane associative thickener, and more preferably, the polyurethane associative thickener is one of Hamming R299 or Rohm-8 w.
Preferably, the organobentonite is Haimax Bentonie EW; the water-based acrylic emulsion is one or more of pure acrylic emulsion.
The Haimax Bentonie EW can endow the paint paste with excellent thixotropic property, so that the paint is simultaneously suitable for various coating modes such as air spraying, airless spraying, roller coating and the like.
The application also provides a preparation method of the high-weather-resistance water-based acrylic decorative coating, which specifically comprises the following steps:
s1: preparing raw materials according to the formula amount, mixing a wetting dispersant, a pH regulator with the formula amount of 1/2-2/3, an antifoaming agent with the formula amount of 1/2-7/10 and deionized water with the formula amount of 3/4, stirring and mixing uniformly at the speed of 400-500 r/min, adding organic bentonite, an ultraviolet absorbent, a pigment and barium sulfate, stirring for 15-20 min at the speed of 700-800 r/min, and grinding until the fineness is less than or equal to 25 mu m to obtain early-stage slurry;
s2: mixing the water-based acrylic emulsion, the film-forming assistant, the flatting agent, the polyethylene wax, the residual defoaming agent, the residual pH regulator and the residual deionized water, and stirring at the speed of 400-500 r/min for 15-20 min to obtain a mixed base material;
s3: and (3) mixing the earlier stage slurry obtained in the step S1 with the mixed base material obtained in the step S2, adding a thickening agent, and stirring at the rotating speed of 700-900 r/min for 15-20 min to obtain the high-weather-resistance water-based acrylic decorative coating.
Compared with the prior art, the preparation method of the high-weather-resistance water-based acrylic decorative coating provided by the invention combines the characteristics of the components and the performance of the final product, determines the adding sequence and adding amount of the components, ensures the mixing effect of the components of the coating at the early stage of mixing, lays a solid foundation for the performance stability of the coating after film forming, and is simple to operate in the preparation process, safe and environment-friendly.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The water-based decorative coating taking water-based acrylic acid as a main film forming substance is always a popular decorative coating product in the market due to the characteristics of good adhesive force, low price and good smell, the weather resistance of the traditional acrylic emulsion type coating is generally 500-600 h, the hardness is generally B, the water resistance and salt resistance experiment is about 170h, the environmental protection requirement of the market is continuously improved along with the continuous updating and updating of the product, the performance of the existing acrylic emulsion type coating cannot meet the requirement of the market, but the weather resistance, wear resistance and other performances of the acrylic emulsion type coating are difficult to further improve due to the defect of the weather resistance of the acrylic emulsion, and the problem hinders the further popularization and application of the water-based acrylic decorative coating.
In order to solve the technical problems of poor weather resistance and wear resistance and short service life of the water-based decorative coating in the prior art, the inventor comprehensively researches the wavelength and energy of ultraviolet rays, the bond type and the bond energy of a polymer in a water-based acrylic emulsion, designs an ultraviolet ray absorbent capable of absorbing ultraviolet rays in a large range according to the wavelength and energy of the ultraviolet rays and the dissociation energy of the bond type in a film forming substance, and improves the weather resistance of a paint film to the maximum extent under the matching of polyethylene wax with a double bond structure.
The decorative coating specifically comprises the following components in percentage by mass: 45-60% of water-based acrylic emulsion, 0.1-0.25% of defoaming agent, 0.5-0.85% of wetting dispersant, 0.3-0.75% of flatting agent, 0.4-1% of pH regulator, 3-5.5% of ultraviolet absorbent, 5-10% of pigment, 6-11% of barium sulfate, 3.8-6.6% of polyethylene wax, 3.2-4.5% of film-forming assistant, 0.2-0.4% of thickening agent, 0.3-0.9% of organic bentonite and the balance of deionized water; the ultraviolet absorbent is a mixture of benzophenone ultraviolet absorbent and benzotriazole ultraviolet absorbent, and the polyethylene wax is a double-bond polyethylene wax.
The ultraviolet absorbent in the high-weather-resistance water-based acrylic decorative coating provided by the invention is a mixture of benzophenone and benzotriazole ultraviolet absorbents, the ultraviolet resistance of a paint film is improved through the combined action of the benzophenone and the benzotriazole ultraviolet absorbents, the ultraviolet rays with the wavelength of 240-400 nm can be jointly absorbed, and the high-weather-resistance water-based acrylic decorative coating has the characteristics of good water stability and small volatility; the polyethylene wax containing the double-bond structure can generate synergistic effect with the ultraviolet absorbent while ensuring the hardness and the wear resistance of the coating, further enhance the ultraviolet absorption capability of the coating, improve the aging resistance and the service life of the coating, and enable the hardness, the wear resistance, the weather resistance and the coating service life of a paint film formed by the obtained water-based decorative paint to be obviously superior to those of similar products under the mutual cooperation and interaction of other additives.
In order to further improve the absorption capacity of the ultraviolet absorbent and prolong the weather resistance of the coating, the inventor also researches the components of the benzophenone and benzotriazole ultraviolet absorbent in the ultraviolet absorbent, and researches show that when the mass ratio of the benzophenone ultraviolet absorbent to the benzotriazole ultraviolet absorbent is 1-1.5: 1, the weather resistance of the paint film formed by the paint is optimal.
The polyethylene wax containing a double-bond structure is not limited in kind, and specifically, the HONEYWELL maleic anhydride grafted wax A-C575A can be selected.
The traditional single-component defoaming agent has poor defoaming effect in the emulsion obtained by the scheme, the surface of a paint film often has the defects of shrinkage cavity, pinholes and the like, and the traditional single-component defoaming agent has certain influence on the glossiness and the physical and chemical properties of the paint film; wherein the hydroxyl siloxane polyacrylate is Tego-902w, the organic silicon defoamer is BYK-028 of Bike company, and the best effect is achieved when the mass ratio is 3-4: 1.
In order to make the dispersion effect of the pigment in the coating more uniform in the coating and further promote the interpenetration between a film forming substance and other inorganic compounds in the coating, the wetting dispersant used in the invention is a mixture of high molecular weight block copolymer emulsion containing pigment affinity groups and polyphosphate dispersant, wherein the high molecular weight block copolymer solution containing the pigment affinity groups is BYK-190, the polyester modified polyphosphate dispersant is AFCONA-5010 of Effkona, and the mass ratio is 1-2: 1.
the leveling agent is a mixture of a polyether modified siloxane solution and a solvent-free organic modified siloxane solution, wherein the polyether modified siloxane is BYK-346, the solvent-free organic modified siloxane is EFKA-3580, and the mass ratio of the polyether modified siloxane to the solvent-free organic modified siloxane is 2-3: 1; the pH regulator is 1-2: 1 of dimethylethanolamine and triethanolamine.
The pigment of the invention is one of carbon black, wood red powder, titanium dioxide and scarlet powder, wherein the carbon black can be MA-100, the wood red powder can be RR3597/5597, the titanium dioxide can be LR-996/706, the scarlet powder can be MH-RC/MH-5R, and the pigment components all contain certain metal smoke oxide or metal ions, which can play a certain bridging role in the paint, thereby increasing the fullness and glossiness at the end of the period.
The barium sulfate with the particle size of 1500-1600 meshes has an outstanding dispersion effect in the water-based acrylic emulsion, can be uniformly distributed in molecular gaps inside a paint film, and has a certain promotion effect on improving the compactness and hardness of the paint film.
The Eschmann TEXANOL film-forming aid with a boiling point of about 247 ℃ and low water solubility at normal temperature has an effect of promoting the film-forming property of the water-based acrylic emulsion, can also improve the anti-pulverization property of a paint film, and has a certain accelerating effect on the luster and strength of the paint film.
The Haimines Bentone EW can endow the paint paste with excellent thixotropic property, so that the paint is simultaneously suitable for various coating modes such as air spraying, airless spraying, roller coating and the like.
The embodiment of the application also provides a preparation method of the high-weather-resistance water-based acrylic decorative coating, which specifically comprises the following steps:
s1: preparing raw materials according to the formula amount, mixing a wetting dispersant, a pH regulator with the formula amount of 1/2-2/3, an antifoaming agent with the formula amount of 1/2-7/10 and deionized water with the formula amount of 3/4, stirring and mixing uniformly at the speed of 400-500 r/min, adding organic bentonite, an ultraviolet absorbent, a pigment and barium sulfate, stirring for 15-20 min at the speed of 700-800 r/min, and grinding until the fineness is less than or equal to 25 mu m to obtain early-stage slurry;
s2: mixing the water-based acrylic emulsion, the film-forming assistant, the flatting agent, the polyethylene wax, the residual defoaming agent, the residual pH regulator and the residual deionized water, and stirring at the speed of 400-500 r/min for 15-20 min to obtain a mixed base material;
s3: and (3) mixing the earlier stage slurry obtained in the step S1 with the mixed base material obtained in the step S2, adding a thickening agent, and stirring at the rotating speed of 700-900 r/min for 15-20 min to obtain the high-weather-resistance water-based acrylic decorative coating.
The invention is further illustrated below in the following examples.
In the following examples:
the water-based acrylic emulsion is XG-9399 emulsion of New constant water New optical Material science and technology Limited;
the film-forming assistant is Texanol of Istman;
the polyethylene wax is a HONEYWELL maleic anhydride grafted wax A-C575A with a double bond structure
The carbon black is MA-100; the powder of the wood red is RR 3597/5597;
the titanium white is LR-996/706, and the scarlet powder is MH-RC/MH-5R;
example 1
The embodiment provides a high-weather-resistance water-based acrylic decorative coating which comprises the following components in percentage by mass: 60% of water-based acrylic emulsion, 4% of film-forming additive, 0.1% of defoaming agent, 0.8% of wetting dispersant, 0.3% of flatting agent, 0.7% of pH regulator, 0.6% of organic bentonite, 5% of ultraviolet absorbent, 9% of pigment, 6% of barium sulfate, 6% of polyethylene wax, 0.3% of thickening agent and deionized water added to 100%.
Wherein the defoaming agent consists of hydroxy siloxane polyacrylate Tego-902w and an organosilicon defoaming agent BYK-028 in a mass ratio of 3: 1; the dispersing agent consists of a high molecular weight block copolymer solution BYK-190 containing pigment affinity groups and a polyester modified polyphosphate dispersing agent AFCONA-5010 in a mass ratio of 1: 1; the mass ratio of the leveling agent is 2:1 and a solvent-free organic modified siloxane EFKA-3580; the pH regulator is prepared from the following components in a mass ratio of 1:1 of dimethylethanolamine and triethanolamine; the ultraviolet absorbent is prepared from the following components in a mass ratio of 1.3: 1 of benzophenone ultraviolet absorbent UV-531 and benzotriazole ultraviolet absorbent UV-326; the pigment is wood red powder; the particle size of barium sulfate is 1600 meshes.
The preparation method of the high weather-resistant decorative coating specifically comprises the following steps:
s1: preparing raw materials according to the formula amount, mixing a wetting dispersant, a pH regulator with the formula amount of 3/5, a defoaming agent with the formula amount of 7/10 and deionized water with the formula amount of 3/4, stirring and mixing uniformly at the speed of 500r/min, adding organic bentonite, an ultraviolet absorbent, pigment and barium sulfate, stirring for 20min at the speed of 700r/min to obtain mixed slurry, and grinding the mixed slurry until the fineness is less than or equal to 25 mu m to obtain early-stage slurry;
s2: mixing the water-based acrylic emulsion, the film forming auxiliary agent, the flatting agent, the polyethylene wax, the residual defoaming agent, the residual pH regulator and the residual deionized water, and stirring and mixing at 500r/min for 15min to obtain a mixed base material;
s3: and mixing the early-stage slurry with the mixed base material, adding the thickening agent, and stirring at 900r/min for 15min to obtain the high-weather-resistance decorative coating.
Example 2
The embodiment provides a high weather-resistant water-based acrylic decorative coating, which comprises the following components in percentage by mass: 60 percent of water-based acrylic emulsion, 4 percent of film-forming additive, 0.1 percent of defoamer, 0.8 percent of wetting dispersant, 0.3 percent of flatting agent, 0.7 percent of pH regulator, 0.6 percent of organic bentonite, 4 percent of ultraviolet absorbent, 9 percent of pigment, 6 percent of barium sulfate, 6 percent of polyethylene wax, 0.3 percent of thickener, and deionized water is added to 100 percent,
wherein the defoaming agent is prepared from the following components in a mass ratio of 4:1 of hydroxyl siloxane polyacrylate Tego-902w and an organosilicon defoamer BYK-028; the dispersing agent is prepared from the following components in a mass ratio of 2:1, a high molecular weight block copolymer solution BYK-190 containing pigment affinity groups and a polyester modified polyphosphate dispersing agent AFCONA-5010; the leveling agent is prepared from the following components in percentage by mass of 3:1 and a solvent-free organic modified siloxane EFKA-3580; the pH regulator is prepared from the following components in percentage by mass: 1 of dimethylethanolamine and triethanolamine; the ultraviolet absorbent is prepared from the following components in percentage by mass of 1:1, and a benzophenone ultraviolet absorbent UV-531 and a benzotriazole ultraviolet absorbent UV-326; the pigment is titanium dioxide; the particle size of barium sulfate is 1600 meshes.
The preparation method of the high weather-resistant decorative coating specifically comprises the following steps:
s1: preparing raw materials according to the formula amount, mixing a wetting dispersant, a pH regulator with the formula amount of 1/2, a defoaming agent with the formula amount of 1/2 and deionized water with the formula amount of 3/4, stirring and mixing uniformly at the speed of 400r/min, adding organic bentonite, an ultraviolet absorbent, a pigment and barium sulfate, stirring for 15min at the speed of 800r/min to obtain mixed slurry, and grinding the mixed slurry until the fineness is less than or equal to 25 mu m to obtain early-stage slurry;
s2: mixing the water-based acrylic emulsion, the film forming auxiliary agent, the flatting agent, the polyethylene wax, the residual defoaming agent, the residual pH regulator and the residual deionized water, and stirring and mixing for 20min at the speed of 400r/min to obtain a mixed base material;
s3: and mixing the early-stage slurry with the mixed base material, adding the thickening agent, and stirring at 700r/min for 20min to obtain the high-weather-resistance decorative coating.
Example 3
The embodiment provides a high-weather-resistance water-based acrylic decorative coating which comprises the following components in percentage by mass: 60% of water-based acrylic emulsion, 4% of film-forming additive, 0.1% of defoaming agent, 0.7% of wetting dispersant, 0.3% of flatting agent, 0.7% of pH regulator, 0.6% of organic bentonite, 3% of ultraviolet absorbent, 9% of pigment, 6% of barium sulfate, 6% of polyethylene wax, 0.3% of thickening agent and deionized water added to 100%.
Wherein the defoaming agent is prepared from the following components in a mass ratio of 3:1 of hydroxyl siloxane polyacrylate Tego-902w and an organosilicon defoamer BYK-028; the dispersing agent is prepared from the following components in a mass ratio of 2:1, a high molecular weight block copolymer solution BYK-190 containing pigment affinity groups and a polyester modified polyphosphate dispersing agent AFCONA-5010; the leveling wetting agent comprises the following components in percentage by mass: 1 and a solvent-free organic modified siloxane EFKA-3580; the pH regulator is prepared from the following components in percentage by mass: 1 of dimethylethanolamine and triethanolamine; the ultraviolet absorbent is prepared from the following components in a mass ratio of 1.5: 1 of benzophenone ultraviolet absorbent UV-531 and benzotriazole ultraviolet absorbent UV-326; the pigment is scarlet powder; the particle size of barium sulfate is 1600 meshes.
The preparation method of the high weather-resistant decorative coating specifically comprises the following steps:
s1: preparing raw materials according to the formula amount, mixing a wetting dispersant, a pH regulator with the formula amount of 1/2, a defoaming agent with the formula amount of 7/10 and deionized water with the formula amount of 3/4, stirring and mixing uniformly at the speed of 450r/min, adding organic bentonite, an ultraviolet absorbent, a pigment and barium sulfate, stirring for 18min at the speed of 750r/min to obtain mixed slurry, and grinding the mixed slurry until the fineness is less than or equal to 25 mu m to obtain early-stage slurry;
s2: mixing the water-based acrylic emulsion, the film forming auxiliary agent, the flatting agent, the polyethylene wax, the residual defoaming agent, the residual pH regulator and the residual deionized water, and stirring and mixing for 20min at the speed of 450r/min to obtain a mixed base material;
s3: and mixing the early-stage slurry with the mixed base material, adding the thickening agent, and stirring at 750r/min for 20min to obtain the high-weather-resistance decorative coating.
Example 4
The embodiment provides a high weather-resistant water-based acrylic decorative coating, which comprises the following components in percentage by mass: 60% of water-based acrylic emulsion, 4% of film-forming additive, 0.1% of defoaming agent, 0.7% of wetting dispersant, 0.3% of flatting agent, 0.7% of pH regulator, 0.6% of organic bentonite, 5% of ultraviolet absorbent, 9% of pigment, 6% of barium sulfate, 4% of polyethylene wax, 0.3% of thickening agent and deionized water added to 100%.
Wherein the defoaming agent is prepared from the following components in percentage by mass of 3:1 of hydroxyl siloxane polyacrylate Tego-902w and an organosilicon defoamer BYK-028; the dispersing agent is prepared from the following components in a mass ratio of 2:1, a high molecular weight block copolymer solution BYK-190 containing pigment affinity groups and a polyester modified polyphosphate ester dispersant AFCONA-5010; the leveling wetting agent comprises the following components in percentage by mass: 1 and a solvent-free organic modified siloxane EFKA-3580; the pH regulator is prepared from the following components in percentage by mass: 1 of dimethylethanolamine and triethanolamine; the ultraviolet absorbent is prepared from the following components in a mass ratio of 1.3: 1 of benzophenone ultraviolet absorbent UV-531 and benzotriazole ultraviolet absorbent UV-326; the pigment is carbon black; the particle size of barium sulfate is 1600 meshes.
The preparation method of the high weather-resistant decorative coating specifically comprises the following steps:
s1: preparing raw materials according to the formula amount, mixing a wetting dispersant, a pH regulator with the formula amount of 2/3, a defoaming agent with the formula amount of 1/2 and deionized water with the formula amount of 3/4, stirring and mixing uniformly at the speed of 500r/min, adding organic bentonite, an ultraviolet absorbent, a pigment and barium sulfate, stirring for 20min at the speed of 800r/min to obtain mixed slurry, and grinding the mixed slurry until the fineness is less than or equal to 25 mu m to obtain early-stage slurry;
s2: mixing the water-based acrylic emulsion, the film forming auxiliary agent, the flatting agent, the polyethylene wax, the residual defoaming agent, the residual pH regulator and the residual deionized water, and stirring and mixing at 500r/min for 15min to obtain a mixed base material;
s3: and mixing the early-stage slurry with the mixed base material, adding the thickening agent, and stirring at 800r/min for 20min to obtain the high-weather-resistance decorative coating.
Example 5
The embodiment provides a high-weather-resistance water-based acrylic decorative coating which comprises the following components in percentage by mass: 60 percent of water-based acrylic emulsion, 4 percent of film-forming additive, 0.1 percent of defoamer, 0.7 percent of wetting dispersant, 0.3 percent of flatting agent, 0.7 percent of pH regulator, 0.6 percent of organic bentonite, 4 percent of ultraviolet absorbent, 9 percent of pigment, 6 percent of barium sulfate, 5 percent of polyethylene wax, 0.3 percent of thickening agent, and deionized water is added to 100 percent,
wherein the defoaming agent is prepared from the following components in percentage by mass of 3:1 of hydroxyl siloxane polyacrylate Tego-902w and an organosilicon defoamer BYK-028; the dispersing agent is prepared from the following components in a mass ratio of 2:1, a high molecular weight block copolymer solution BYK-190 containing pigment affinity groups and a polyester modified polyphosphate dispersing agent AFCONA-5010; the leveling wetting agent comprises the following components in percentage by mass: 1 and a solvent-free organic modified siloxane EFKA-3580; the pH regulator is prepared from the following components in percentage by mass of 2:1 of dimethylethanolamine and triethanolamine; the ultraviolet absorbent is prepared from the following components in percentage by mass of 1:1 of benzophenone ultraviolet absorbent UV-531 and benzotriazole ultraviolet absorbent UV-326; the pigment is wood red powder; the particle size of barium sulfate is 1600 meshes.
The preparation method of the high weather-resistant decorative coating specifically comprises the following steps:
s1: preparing raw materials according to the formula amount, mixing a wetting dispersant, a pH regulator with the formula amount of 2/3, a defoaming agent with the formula amount of 1/2 and deionized water with the formula amount of 3/4, stirring and mixing uniformly at the speed of 500r/min, adding organic bentonite, an ultraviolet absorbent, a pigment and barium sulfate, stirring for 20min at the speed of 800r/min to obtain mixed slurry, and grinding the mixed slurry until the fineness is less than or equal to 25 mu m to obtain early-stage slurry;
s2: mixing the water-based acrylic emulsion, the film-forming assistant, the flatting agent, the polyethylene wax, the residual defoaming agent, the residual pH regulator and the residual deionized water, and stirring and mixing at 500r/min for 15min to obtain a mixed base material;
s3: and mixing the early-stage slurry with the mixed base material, adding the thickening agent, and stirring at 800r/min for 20min to obtain the high-weather-resistance decorative coating.
Comparative example 1
This comparative example provides a water-borne acrylic decorative coating which, compared with example 1, is identical to example 1 in the amounts of the other components, the specific selection of the components and the preparation process, except that the polyethylene wax a-C575A containing a double bond structure is replaced by an equal amount of polyethylene wax PEW-2016 without a double bond structure.
Comparative example 2
This comparative example provides a water-borne acrylic decorative coating which, in comparison with example 5, is identical to example 5 in the amounts of the other components, the specific selection of the components and the preparation process, except that the components do not contain polyethylene wax and the amount of the ultraviolet absorber is 10%.
Comparative example 3
This comparative example provides a water-borne acrylic decorative coating which, in comparison with example 5, is identical to example 5 in terms of the amounts of the remaining components, the specific selection of the components and the preparation process, except that no UV absorber is included in the components and the amount of polyethylene wax is 10%.
Comparative example 4
This comparative example provides a water-based acrylic decorative coating which, compared with example 1, is identical to example 1 in the amounts of the other components, the specific selection of the components and the preparation process, except that BYK-028 is used as the component antifoaming agent.
Comparative example 5
This comparative example provides a water-based acrylic decorative coating which, compared to example 1, is consistent with example 1 in terms of the amounts of the components, the specific selection of the components and the preparation process, except that the component defoamer is used only with Tego-902 w.
Comparative example 6
This comparative example provides a water-borne acrylic decorative coating which, in comparison with example 3, is identical to example 3 in terms of the amounts of the components, the specific selection of the components and the preparation process, except that the amount of the ultraviolet absorber component used is 3%.
Comparative example 7
This comparative example provides a water-borne acrylic decorative coating which, in comparison with example 4, is identical to example 4 in terms of the amounts of the components, the specific selection of the components and the preparation process, except that the amount of the polyethylene wax component used is 3%.
Example of detection
The performance of the coatings obtained in examples 1-5 and comparative examples 1-7 was tested according to GB/T4758-,
wherein: the coatings obtained in comparative examples 2 and 3 have poor stability, delamination and soft precipitation phenomena occur in heat storage, and the water resistance and the salt water resistance are sharply reduced;
the paint films obtained by the comparative examples 4 and 5 respectively have shrinkage cavity defects and pinhole defects on the surfaces, and the gloss measurement is influenced in the paint film aging resistance experiment, so that the judgment on the weather resistance authenticity of the paint films is influenced; the water resistance and the salt water resistance of the paint film are greatly influenced.
The final performance test results are shown in table one:
watch 1
From the test results, it can be seen that: the high weather-resistant water-based acrylic decorative coating provided by the invention has the advantages that the hardness can reach 2H, the friction coefficient is 0.12, the weather resistance experiment can still keep stable for 1500H, the water resistance and salt water resistance experiment can reach 240H, the coating has outstanding weather resistance, and the coating does not delaminate, precipitate or agglomerate after being stored for 7 days at 50 ℃, has outstanding storage stability and good application prospect.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The water-based decorative coating is characterized by comprising the following components in percentage by mass: 45-60% of water-based acrylic emulsion, 0.1-0.25% of defoaming agent, 0.5-0.85% of wetting dispersant, 0.3-0.75% of flatting agent, 0.4-1.0% of pH regulator, 3-5.5% of ultraviolet absorbent, 5-10% of pigment, 6-11% of barium sulfate, 3.8-6.6% of polyethylene wax, 3.2-4.5% of film-forming additive, 0.2-0.4% of thickening agent, 0.3-0.9% of organic bentonite and the balance of deionized water; the ultraviolet absorbent consists of benzophenone and benzotriazole ultraviolet absorbents, and the polyethylene wax is a double-bond polyethylene wax.
2. The water-based decorative coating as claimed in claim 1, wherein the mass ratio of the benzophenone-based ultraviolet absorber to the benzotriazole-based ultraviolet absorber in the ultraviolet absorber is 1-1.5: 1.
3. the water-based decorative coating as claimed in claim 1, wherein the defoaming agent is prepared from the following components in a mass ratio of 3-4: 1 and a silicone defoamer.
4. The water-based decorative paint as claimed in claim 1, wherein the wetting dispersant is prepared from the following components in a mass ratio of 1-2: 1, a macromolecular block copolymer solution containing pigment affinity groups and a polyphosphate dispersing agent.
5. The water-based decorative coating as claimed in claim 1, wherein the mass ratio of the leveling agent to the water-based decorative coating is 2-3: 1 and an organic modified siloxane solution without solvent.
6. The water-based decorative paint as claimed in claim 1, wherein the pH regulator is prepared from the following components in a mass ratio of 1-2: 1 dimethylethanolamine and triethanolamine.
7. The aqueous decorative coating according to claim 1, wherein the aqueous acrylic emulsion is one or more of a pure acrylic emulsion; and/or
The thickening agent is a polyurethane associative thickening agent; and/or
The pigment is one of carbon black, wood red powder, titanium dioxide and scarlet powder.
8. The water-based decorative paint of claim 1, wherein the particle size of the barium sulfate is 1500-1600 meshes.
9. The preparation method of the water-based decorative coating is characterized by comprising the following steps:
s1: preparing raw materials according to the formula amount of the water-based decorative coating of any one of claims 1 to 8, mixing the dispersing agent, the pH regulator with the formula amount of 1/2 to 2/3, the antifoaming agent with the formula amount of 1/2 to 7/10 and the deionized water with the formula amount of 3/4, stirring and mixing uniformly at the speed of 400 to 500r/min, adding the organic bentonite, the ultraviolet absorbent, the pigment and the barium sulfate, stirring for 15 to 20min at the speed of 700 to 800r/min, and grinding until the fineness is less than or equal to 25 mu m to obtain early-stage slurry;
s2: mixing the water-based acrylic emulsion, the film forming auxiliary agent, the flatting agent, the polyethylene wax, the residual defoaming agent, the residual pH regulator and the residual deionized water, and stirring at the speed of 400-500 r/min for 15-20 min to obtain a mixed base material;
s3: and mixing the early-stage slurry and the mixed base material, adding a thickening agent, and stirring at a rotating speed of 700-900 r/min for 15-20 min to obtain the water-based decorative coating.
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| CN111073420A (en) * | 2019-12-20 | 2020-04-28 | 珠海展辰新材料股份有限公司 | Water-based acrylic coating and preparation method thereof |
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| CN108070294A (en) * | 2017-12-30 | 2018-05-25 | 上海墨传新材料科技有限公司 | High abrasion aqueous ink used for plastic and preparation method thereof |
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Application publication date: 20220603 |