CN116875167A - Water-based wood paint and preparation method thereof - Google Patents
Water-based wood paint and preparation method thereof Download PDFInfo
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- CN116875167A CN116875167A CN202311024969.8A CN202311024969A CN116875167A CN 116875167 A CN116875167 A CN 116875167A CN 202311024969 A CN202311024969 A CN 202311024969A CN 116875167 A CN116875167 A CN 116875167A
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- defoamer
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 110
- 239000002023 wood Substances 0.000 title claims abstract description 79
- 238000002360 preparation method Methods 0.000 title claims abstract description 27
- 239000003973 paint Substances 0.000 title abstract description 37
- 239000004922 lacquer Substances 0.000 claims abstract description 46
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 44
- 239000006260 foam Substances 0.000 claims abstract description 44
- 239000013530 defoamer Substances 0.000 claims description 62
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 38
- 239000000080 wetting agent Substances 0.000 claims description 37
- 239000006184 cosolvent Substances 0.000 claims description 34
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 34
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 33
- 239000002270 dispersing agent Substances 0.000 claims description 31
- 239000004925 Acrylic resin Substances 0.000 claims description 30
- 229920000178 Acrylic resin Polymers 0.000 claims description 30
- 239000002562 thickening agent Substances 0.000 claims description 30
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 claims description 26
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical class O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 25
- 239000002516 radical scavenger Substances 0.000 claims description 23
- 235000010215 titanium dioxide Nutrition 0.000 claims description 23
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 22
- 238000000518 rheometry Methods 0.000 claims description 20
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 19
- 230000003449 preventive effect Effects 0.000 claims description 19
- 239000000843 powder Substances 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 16
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 9
- 229920001577 copolymer Polymers 0.000 claims description 9
- 229920000570 polyether Polymers 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 239000002480 mineral oil Substances 0.000 claims description 5
- 235000010446 mineral oil Nutrition 0.000 claims description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- -1 alcohol ester Chemical class 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000000344 soap Substances 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 2
- 239000012948 isocyanate Substances 0.000 claims description 2
- 150000002513 isocyanates Chemical group 0.000 claims description 2
- MGIYRDNGCNKGJU-UHFFFAOYSA-N isothiazolinone Chemical group O=C1C=CSN1 MGIYRDNGCNKGJU-UHFFFAOYSA-N 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims 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 claims 1
- 238000005507 spraying Methods 0.000 abstract description 26
- 238000007665 sagging Methods 0.000 abstract description 20
- 239000000463 material Substances 0.000 abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000002994 raw material Substances 0.000 abstract description 6
- 206010027627 Miliaria Diseases 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 201000004169 miliaria rubra Diseases 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 238000010924 continuous production Methods 0.000 abstract description 2
- 238000002474 experimental method Methods 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 description 24
- 239000011248 coating agent Substances 0.000 description 14
- 238000000576 coating method Methods 0.000 description 14
- 238000007796 conventional method Methods 0.000 description 14
- 239000011347 resin Substances 0.000 description 11
- 229920005989 resin Polymers 0.000 description 11
- DAFHKNAQFPVRKR-UHFFFAOYSA-N (3-hydroxy-2,2,4-trimethylpentyl) 2-methylpropanoate Chemical compound CC(C)C(O)C(C)(C)COC(=O)C(C)C DAFHKNAQFPVRKR-UHFFFAOYSA-N 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 239000000654 additive Substances 0.000 description 10
- 230000000996 additive effect Effects 0.000 description 10
- 239000008367 deionised water Substances 0.000 description 10
- 229910021641 deionized water Inorganic materials 0.000 description 10
- 238000001914 filtration Methods 0.000 description 10
- 239000003112 inhibitor Substances 0.000 description 10
- 239000010936 titanium Substances 0.000 description 10
- 239000004408 titanium dioxide Substances 0.000 description 10
- 238000004806 packaging method and process Methods 0.000 description 9
- 229910014314 BYK190 Inorganic materials 0.000 description 8
- 239000006185 dispersion Substances 0.000 description 7
- 235000010216 calcium carbonate Nutrition 0.000 description 6
- CUVLMZNMSPJDON-UHFFFAOYSA-N 1-(1-butoxypropan-2-yloxy)propan-2-ol Chemical compound CCCCOCC(C)OCC(C)O CUVLMZNMSPJDON-UHFFFAOYSA-N 0.000 description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 5
- 229910052791 calcium Inorganic materials 0.000 description 5
- 239000011575 calcium Substances 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 230000003068 static effect Effects 0.000 description 5
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 4
- 239000012752 auxiliary agent Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- ALRHLSYJTWAHJZ-UHFFFAOYSA-N 3-hydroxypropionic acid Chemical compound OCCC(O)=O ALRHLSYJTWAHJZ-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 239000006254 rheological additive Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000002609 medium Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- CUDYYMUUJHLCGZ-UHFFFAOYSA-N 2-(2-methoxypropoxy)propan-1-ol Chemical compound COC(C)COC(C)CO CUDYYMUUJHLCGZ-UHFFFAOYSA-N 0.000 description 1
- 238000004131 Bayer process Methods 0.000 description 1
- 206010063385 Intellectualisation Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 239000012738 dissolution medium Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000007590 electrostatic spraying Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910021485 fumed silica Inorganic materials 0.000 description 1
- 239000006221 furniture coating Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 239000001038 titanium pigment 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
- 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
- C09D7/63—Additives non-macromolecular organic
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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)
- Paints Or Removers (AREA)
Abstract
The application relates to the technical field of paint, in particular to water-based wood paint and a preparation method thereof. The water-based wood paint provided by the application is low-foam, free of dark bubbles and prickly heat when polished, and capable of resisting sagging and leveling, is environment-friendly, suitable for modern mechanical and digital production, high in production efficiency and less in paint film defect. According to the water-based wood paint provided by the application, through the selection of raw materials and auxiliary materials, the matching of the defoaming agent and the adjustment of the production process, even if the water-based wood paint is sprayed under continuous atmospheric pressure, the foam of a paint film is little, and a small amount of foam can break foam immediately after being sprayed; and the paint can resist sagging and leveling, has good sagging resistance effect and has very flat large panel paint film. The preparation method is simple to operate and can realize continuous production. Experiments show that the water-based wood lacquer provided by the application is used for reciprocating spraying, does not foam, does not have dark bubbles, does not block guns, and has sagging resistance and leveling, and the adhesive force reaches level 0.
Description
Technical Field
The application relates to the technical field of paint, in particular to water-based wood paint and a preparation method thereof.
Background
With the increasing awareness of the whole society of environmental protection, it is imperative to replace paint with environmental protection water paint. The water paint is a paint using water as a dissolution medium, has the advantages of no toxicity, environmental protection, no smell, few volatile matters, no combustion, no explosion and the like, and is a green environment-friendly product which does not use an organic solvent as a diluent. More and more furniture enterprises gradually advance intelligent manufacturing, mechanization and intellectualization, replace traditional manual work, greatly improve production efficiency, reduce defective products caused by human errors, and reduce labor cost. The reciprocating spraying is very suitable for various plate furniture coating, compared with electrostatic spraying, the spraying film is even, the application range is wide, the oil sprayed on the rail can be recycled, and the cost is saved.
However, the common water-based wood coating on the market is difficult to meet the requirements of reciprocating spraying, such as high reciprocating spraying air pressure, continuous spraying, foam control problem, problem of hidden bubbles generated in primer polishing, continuous spraying gun blocking problem, and no oiling or sagging problem on the edge of a flat plate. Therefore, the water-based wood coating which is suitable for reciprocating spraying, is not easy to foam, has no dark bubbles, can be continuously sprayed without blocking a gun, and can simultaneously resist sagging and leveling is researched and becomes a problem to be solved in urgent need of manufacturers with prospective consciousness in the industry.
Disclosure of Invention
In view of the above, the technical problem to be solved by the application is to provide the water-based wood lacquer and the preparation method thereof, wherein the water-based wood lacquer provided by the application has the advantages of no foaming, no dark bubbles, no gun blockage and both sagging resistance and leveling.
The application provides a water-based wood lacquer, which comprises a component A and a component B;
the component A comprises:
hydroxy acrylic resin: 40-60 parts by weight;
and (3) a defoaming agent: 0.2 to 0.5 weight portion; the deaerating agent is polyether siloxane copolymer deaerating agent;
microbubble defoamer: 0.1 to 0.4 weight portion; the micro-foam defoamer is at least one of polyether siloxane copolymer defoamer or organic silicon defoamer;
and a large bubble defoamer: 0.4 to 0.8 weight portion; the large foam defoamer is at least one of mineral oil defoamer or metal soap defoamer;
the component B comprises:
hydrophilically modified hexamethylene diisocyanate: 60-80 parts by weight;
and propylene glycol methyl ether acetate: 19-40 parts by weight.
The aqueous wood lacquer provided by the application comprises a component A and a component B; the weight ratio of the component A to the component B is 100:5 to 10, preferably 5 to 6. The inventor creatively discovers that the aqueous wood lacquer with little foam, no dark foam and good sagging resistance, which is applied to reciprocating spraying, can be obtained through the combined use of the defoaming agent, the micro-foam defoaming agent and the large-foam defoaming agent.
The component A in the water-based wood lacquer provided by the application comprises 40-60 parts by weight of hydroxyl acrylic resin. In certain embodiments of the present application, the component A preferably comprises 40 to 55 parts by weight, most preferably 45 to 48 parts by weight, of the hydroxy acrylic resin. The hydroxy acrylic resin is water-based resin, namely water-based hydroxy acrylic resin; specifically, the hydroxy acrylic resin is an unstable foam hydroxy acrylic resin. In some embodiments, the hydroxy acrylic resin is preferably selected from at least one of a labile foam medium hydroxy acrylic resin or a labile foam low hydroxy acrylic resin; the hydroxyl content of the medium hydroxyl acrylic resin is 2% -3%; the hydroxyl content of the low-hydroxyl acrylic resin is 1-2%. The specific source of the hydroxyacrylic resin is not particularly limited in the present application, and those skilled in the art can prepare or purchase it according to conventional methods. In one embodiment, the hydroxy acrylic resin according to the application is preferably selected from the aqueous hydroxy propionic resins produced by Dissman under the trade name XK102, preferably with a solids content of 40% and a hydroxy content of 1.6%.
The component A in the water-based wood lacquer provided by the application comprises 0.2-0.5 part by weight of a defoaming agent. In certain embodiments of the present application, the component A preferably comprises 0.3 to 0.5 parts by weight, most preferably 0.35 to 0.45 parts by weight, of the defoamer. The defoaming agent is a polyether siloxane copolymer defoaming agent. The specific source of the deaerating agent is not particularly limited in the present application, and may be prepared or purchased by a person skilled in the art according to a conventional method. In some embodiments, the deaerating agent is preferably selected from at least one of a tego airex901W deaerating agent or a tego airex902W deaerating agent; specifically, the deaerating agent is preferably at least one selected from a deaerating agent having a brand name of tego airex901W manufactured by diego corporation and a deaerating agent having a brand name of tego airex902W manufactured by diego corporation. Wherein, the brand name of the deaerator produced by Digao is tego airex901W, which is used as the deaerator in the water paint formula, and the effective component is 100%; tego airex902W is a high-efficiency defoaming agent produced by Germany Digao, and is particularly effective for eliminating microbubbles, and the effective component is 25%.
The component A in the water-based wood lacquer provided by the application comprises 0.1-0.4 part by weight of a micro-bubble defoaming agent. In certain embodiments of the present application, the component A preferably comprises from 0.1 to 0.3 parts by weight, most preferably from 0.15 to 0.25 parts by weight, of a microvesicle defoamer. The microbubble defoamer is a polyether siloxane copolymer defoamer or an organosilicon defoamer. The specific source of the microvesicle defoamer is not particularly limited in the present application, and may be prepared or purchased by a person skilled in the art according to conventional methods. In some embodiments, the microbubble defoamer is preferably selected from at least one of a tego 810 defoamer or a BYK024 defoamer; specifically, the microbubble defoamer is preferably at least one selected from the defoamer having the brand name tego 810 manufactured by dygao corporation and the defoamer having the brand name BYK024 manufactured by bikes corporation. The foam inhibitor has good defoaming and foam inhibiting properties, and comprises polyether siloxane copolymer, fumed silica and effective content of 100%; BYK024 is a high-efficiency defoaming agent produced by German bicker company, has excellent foam breaking effect, and is effective for microbubbles, and the effective component is 95%.
The component A in the water-based wood lacquer provided by the application comprises 0.4-0.8 part by weight of a large foam defoamer. In certain embodiments of the present application, the component A preferably comprises 0.5 to 0.7 parts by weight, most preferably 0.5 to 0.6 parts by weight, of a large bubble defoamer. The large foam defoamer is at least one of mineral oil defoamer or metal soap defoamer. The specific source of the large bubble antifoaming agent is not particularly limited in the present application, and may be prepared or purchased according to a conventional method by those skilled in the art. In some embodiments, the large bubble defoamer is preferably selected from at least one of a T4201A defoamer or an NXZ defoamer; specifically, the large bubble defoaming agent is preferably at least one selected from a defoaming agent of the brand T4201A produced by Shi lan Co., ltd, and a defoaming agent of the brand NXZ produced by Nordic Co., ltd. The brand T4201A defoamer produced by the Shilan company is a water-based mineral oil defoamer, has the characteristics of high defoaming speed and long foam inhibition time, and has the effective content of 100%; NXZ is a mineral oil defoamer produced by Nodek, and has strong defoaming capability, small addition amount and 99% of active ingredients.
The component B in the water-based wood lacquer provided by the application comprises 60-80 parts by weight of hydrophilic modified hexamethylene diisocyanate. In certain embodiments of the present application, the component B preferably comprises from 65 to 75 parts by weight, most preferably from 68 to 72 parts by weight, of the hydrophilically modified hexamethylene diisocyanate. The present application is not particularly limited as to the specific source of the hydrophilically modified Hexamethylene Diisocyanate (HDI), and those skilled in the art can prepare or purchase it according to conventional methods. In some embodiments, the hydrophilically modified hexamethylene diisocyanate of the present application is preferably selected from the group consisting of the hydrophilically modified hexamethylene diisocyanate manufactured by bayer under the designation 305.
The component B in the water-based wood lacquer provided by the application comprises 19-40 parts by weight of propylene glycol methyl ether acetate. In certain embodiments of the present application, component B preferably comprises propylene glycol methyl ether acetate in an amount of 20 to 40 parts by weight, more preferably 22 to 38 parts by weight, and most preferably 25 to 35 parts by weight. The specific source of propylene glycol methyl ether acetate (PMA) is not particularly limited in the present application, and may be prepared or purchased by a person skilled in the art according to conventional methods. In some embodiments, the propylene glycol methyl ether acetate of the present application is preferably selected from propylene glycol methyl ether acetate (PMA) produced by dow chemical company.
In the aqueous wood lacquer provided by the application, the component A further comprises:
cosolvent: 3 to 6 parts by weight;
wetting agent: 0.2 to 0.5 weight portion;
and (3) a thickening agent: 0.8 to 1.2 weight portions;
mildew preventive: 0.3 to 0.5 weight portion;
rheology aid: 0.2 to 1.5 weight portions;
dispersing agent: 0.1 to 1.0 weight portion;
titanium white powder: 10-20 parts by weight;
calcium carbonate: 10-20 parts by weight;
talc powder: 0 to 8 parts by weight;
and water: 0 to 10 parts by weight;
the component B further comprises:
water scavenger: 0.5 to 2 parts by weight.
The component A in the water-based wood lacquer provided by the application also comprises 3-6 parts by weight of cosolvent. In certain embodiments of the present application, the component A preferably comprises 3.5 to 5.5 parts by weight, most preferably 4 to 5 parts by weight, of the co-solvent. In one embodiment, the component A includes 3 to 4 parts of a cosolvent. The cosolvent is selected from at least one of alcohol ester cosolvent, alcohol ether cosolvent or alcohol cosolvent; the specific source of the co-solvent is not particularly limited in the present application, and may be prepared or purchased by a person skilled in the art according to conventional methods. In certain embodiments of the present application, the co-solvent is selected from one or more of texanol, dipropylene glycol butyl ether, dipropylene glycol methyl ether, or propylene glycol, more preferably texanol or dipropylene glycol butyl ether. In one embodiment, the co-solvent is selected from Texanol, specifically the co-solvent available under the trademark Texanol from Eastman company. In one embodiment, the co-solvent is selected from dipropylene glycol butyl ether, specifically co-solvent under the trademark DPnB manufactured by Dow Corp.
The component A in the water-based wood lacquer provided by the application also comprises 0.2-0.5 part by weight of wetting agent. In certain embodiments of the present application, the component A preferably comprises 0.25 to 0.45 parts by weight of a wetting agent, most preferably 0.3 to 0.4 parts by weight. The wetting agent is at least one selected from siloxane type gemini structure wetting agents or polyether siloxane copolymer wetting agents; the specific source of the wetting agent is not particularly limited in the present application, and may be prepared or purchased by a person skilled in the art according to a conventional method. In certain embodiments of the application, the wetting agent is selected from at least one of a tego wet4100 wetting agent or a tego wet270 wetting agent. In one embodiment, the wetting agent is preferably selected from at least one of a wetting agent manufactured by Di Gao under the trade name tego wet4100 or a wetting agent manufactured by Di Gao under the trade name tego wet 270.
The component A in the water-based wood lacquer provided by the application also comprises 0.5-1.2 parts by weight of thickening agent. In certain embodiments of the present application, the component A preferably comprises 0.8 to 1.2 parts by weight of the thickener, more preferably 0.85 to 1.15 parts by weight, more preferably 0.9 to 1.1 parts by weight, and most preferably 1.0 to 1.1 parts by weight. The thickener is selected from polyurethane associative thickeners; the specific source of the thickener is not particularly limited in the present application, and may be prepared or purchased by a person skilled in the art according to conventional methods. In certain embodiments of the present application, the thickener is preferably selected from at least one of an XS83 thickener or a PUR65 thickener. In one embodiment, the thickener is preferably selected from at least one of a thickener with the brand XS83 manufactured by gaotai, france or a thickener with the brand PUR65 manufactured by Ming Ling, germany.
The component A in the water-based wood lacquer provided by the application also comprises 0.15-0.5 part by weight of mildew inhibitor. In certain embodiments of the application, the component A preferably comprises from 0.15 to 0.25 parts by weight, most preferably from 0.18 to 0.22 parts by weight, of a mildewproof agent. The mildew preventive is selected from isothiazolinone in-tank mildew preventive; the specific source of the mildew preventive is not particularly limited in the present application, and may be prepared or purchased according to a conventional method by those skilled in the art. In certain embodiments of the present application, the mildew inhibitor is selected from the group consisting of BEK-200L mildew inhibitor or the KATHON-LX300 mildew inhibitor of Dow chemical. In one embodiment, the mildew inhibitor is preferably selected from mildew inhibitors of BEK-200L, manufactured by Guanzhong Zhou chemical industry.
The component A in the water-based wood lacquer provided by the application also comprises 0.2-1.5 parts by weight of rheological auxiliary agent. In certain embodiments of the present application, the component A preferably comprises 0.5 to 1.5 parts by weight of a rheology aid, more preferably 0.6 to 1.4 parts by weight, and most preferably 0.7 to 1.3 parts by weight. The rheological auxiliary agent is selected from polyurethane association type rheological auxiliary agents; the particular source of the rheology aid is not particularly limited in this application and may be prepared or purchased by one skilled in the art according to conventional methods. In certain embodiments of the present application, the rheology aid is preferably selected from at least one of a UH-420 rheology aid or a COAPUR2025 rheology aid. In one embodiment, the rheology aid is preferably selected from at least one of the rheology aids manufactured by Ai Dike under the trade designation UH-420 or the rheology aids manufactured by Gaotai aid company under the trade designation COAPUR 2025.
The component A in the water-based wood lacquer provided by the application also comprises 0.1-1.0 parts by weight of dispersing agent. In certain embodiments of the present application, the component A preferably comprises 0.3 to 0.7 parts by weight of dispersant, most preferably 0.4 to 0.6 parts by weight. The dispersant of the application is selected from polymeric dispersants; the present application is not particularly limited to the specific source of the dispersant, and one skilled in the art can prepare or purchase the dispersant according to a conventional method. In certain embodiments of the present application, the dispersant is preferably selected from at least one of a BYK190 dispersant or a SE5040 dispersant. In one embodiment, the dispersant is preferably at least one selected from the group consisting of BYK190 dispersant produced by pick or SE5040 dispersant produced by guangzhou guangzhi chemical industry.
The component A in the water-based wood paint provided by the application also comprises 10-20 parts by weight of titanium dioxide. In certain embodiments of the present application, the component A preferably comprises 12 to 18 parts by weight, most preferably 14 to 16 parts by weight, of titanium dioxide. The titanium dioxide powder is not particularly limited and may be in the form of a concept well known to those skilled in the art.
The component A in the water-based wood lacquer provided by the application also comprises 10-20 parts by weight of calcium carbonate, preferably 13-15 parts by weight. The calcium carbonate is not particularly limited in the present application, and the present application is preferably 1250-mesh calcium powder, as long as it is a concept well known to those skilled in the art.
The component A in the water-based wood lacquer provided by the application also comprises 0-8 parts by weight of talcum powder, preferably 5-8 parts by weight. The talc is not particularly limited and may be in the form of a concept well known to those skilled in the art.
The component A in the water-based wood lacquer provided by the application also comprises 0-10 parts by weight of water, preferably 8-10 parts by weight. The water is not particularly limited in the present application, and the present application is preferably deionized water according to the concept well known to those skilled in the art.
The component B in the water-based wood lacquer provided by the application also comprises 0.5-2 parts by weight of a water scavenger. In certain embodiments of the present application, the component B preferably comprises 0.8 to 1.5 parts by weight of the water scavenger, most preferably 1 to 1.3 parts by weight. The water scavenger is selected from isocyanate type water scavengers; the specific source of the water scavenger is not particularly limited in the present application, and may be prepared or purchased according to a conventional method by those skilled in the art. In certain embodiments of the present application, the water scavenger is preferably selected from the group consisting of Additive Ti or incozo l 2 water scavengers. In one embodiment, the water scavenger is preferably selected from the group consisting of the water scavengers of the bayer process under the designation Additive Ti.
In certain embodiments of the present application, the component a of the aqueous wood lacquer provided by the present application comprises: hydroxy acrylic resin: 40-55 parts by weight; and (3) a defoaming agent: 0.2 to 0.5 weight portion; microbubble defoamer: 0.15 to 0.25 weight portion; large bubble defoamer: 0.5 to 0.7 weight portion; cosolvent: 3-5 parts by weight; wetting agent: 0.3 to 0.4 weight portion; and (3) a thickening agent: 0.8 to 1.2 weight portions; mildew preventive: 0.3 to 0.5 weight portion; rheology aid: 0.5 to 1.5 weight portions; dispersing agent: 0.1 to 1.0 weight portion; titanium white powder: 10-20 parts by weight; calcium carbonate: 10-20 parts by weight; talc powder: 0 to 8 parts by weight; and water: 8-10 parts by weight; the component B comprises: hydrophilically modified hexamethylene diisocyanate: 60-80 parts by weight; propylene glycol methyl ether acetate: 20-40 parts by weight; and a water scavenger: 0.5 to 2 parts by weight.
In one embodiment, the aqueous wood lacquer provided by the application comprises the following components in percentage by weight: 6, component a and component B; the component A comprises: hydroxy acrylic resin: 50 parts by weight; and (3) a defoaming agent: 0.2 parts by weight; microbubble defoamer: 0.2 parts by weight; large bubble defoamer: 0.5 parts by weight; cosolvent: 3 parts by weight; wetting agent: 0.3 parts by weight; and (3) a thickening agent: 0.5 parts by weight; mildew preventive: 0.2 parts by weight; rheology aid: 0.2 parts by weight; dispersing agent: 0.5 parts by weight; titanium white powder: 15 parts by weight; calcium carbonate: 15 parts by weight; talc powder: 5 parts by weight; and water: 9 parts by weight; the component B comprises: hydrophilically modified hexamethylene diisocyanate: 75 parts by weight; propylene glycol methyl ether acetate: 24 parts by weight; and a water scavenger: 1 part by weight.
In one embodiment, the aqueous wood lacquer provided by the application comprises the following components in percentage by weight: component A and component B of 5; the component A comprises: hydroxy acrylic resin: 47 parts by weight; and (3) a defoaming agent: 0.5 parts by weight; microbubble defoamer: 0.4 parts by weight; large bubble defoamer: 0.6 parts by weight; cosolvent: 4 parts by weight; wetting agent: 0.3 parts by weight; and (3) a thickening agent: 0.5 parts by weight; mildew preventive: 0.2 parts by weight; rheology aid: 0.2 parts by weight; dispersing agent: 0.5 parts by weight; titanium white powder: 18 parts by weight; calcium carbonate: 13 parts by weight; talc powder: 5 parts by weight; and water: 9 parts by weight; the component B comprises: hydrophilically modified hexamethylene diisocyanate: 80 parts by weight; propylene glycol methyl ether acetate: 19 parts by weight; and a water scavenger: 1 part by weight.
The application provides a preparation method of the water-based wood lacquer, which comprises the following steps: and mixing the component A and the component B to obtain the water-based wood lacquer. In some embodiments of the present application, the preparation method of the aqueous wood lacquer provided by the present application includes: mixing the hydroxy acrylic resin, the defoaming agent, the micro-foam defoaming agent, the macro-foam defoaming agent, the cosolvent, the wetting agent, the thickening agent, the mildew inhibitor, the rheological additive, the dispersing agent, the titanium dioxide, the calcium carbonate, the talcum powder, the water, the hydrophilic modified hexamethylene diisocyanate, the propylene glycol methyl ether acetate and the water scavenger to obtain the water-based wood lacquer.
The preparation method of the component A comprises the following steps: and mixing the hydroxy acrylic resin, the defoaming agent, the micro-foam defoaming agent, the macro-foam defoaming agent, the cosolvent, the wetting agent, the thickening agent, the mildew inhibitor, the rheological additive, the dispersing agent, the titanium dioxide, the calcium carbonate, the talcum powder and the water to obtain the component A. Specifically, the method comprises the steps of firstly mixing filtered hydroxy acrylic resin and a defoaming agent, and performing first dispersion for more than 30 minutes at a rotating speed of 1500-1800 r/min until no shrinkage cavity exists, so as to obtain a first material; mixing water, a dispersing agent, a cosolvent and part of large foam defoamer, performing second dispersion for 3-5 min at the rotating speed of 300-500 r/min, and performing third dispersion for 30-45 min with titanium dioxide, calcium carbonate and talcum powder at the rotating speed of 1500-1800 r/min until the fineness of the materials is less than 10 microns, so as to obtain a second material; and dispersing and mixing the first material, the second material, the thickening agent, the mildew preventive, the rheological auxiliary agent, the residual large foam defoaming agent, the micro foam defoaming agent and the wetting agent at the rotating speed of 300-500 r/min to obtain the component A.
In one embodiment, a defoaming agent is added into the hydroxyl acrylic resin subjected to 300-mesh filtration, and the first dispersion is carried out for more than 30 minutes at a rotating speed of 1500-1800 r/min; spraying two drops of wetting agent to observe whether the appearance of a coating film is shrinkage cavity or not, and closing a dispersing machine to perform static defoaming after no shrinkage cavity is confirmed to obtain a first material; mixing deionized water, a dispersing agent, a cosolvent and part of a large foam defoaming agent, performing second dispersion for 3-5 min at the rotating speed of 300-500 r/min, adding titanium white, calcium carbonate and talcum powder while stirring after uniform dispersion, and performing third dispersion for 30-45 min at the rotating speed of 1500-1800 r/min until the fineness of the materials is less than 10 microns, thus obtaining a second material; slowly adding the second material into the first material, stirring while adding, slowly adding a thickening agent, a mildew inhibitor, a rheological additive and the rest large foam defoamer at the rotating speed of 300-500 r/min, finally adding the pre-mixed micro foam defoamer and wetting agent, standing for defoaming for 12 hours after uniformly stirring, and filtering by a 300-mesh filter screen to obtain the component A. The hydroxyl acrylic resin, the defoaming agent, the microbubble defoaming agent, the large bubble defoaming agent, the cosolvent, the wetting agent, the thickening agent, the mildew preventive, the rheological aid, the dispersing agent, the titanium pigment, the calcium carbonate, the talcum powder and the water are the same as the above, and no repeated description is provided.
The preparation method of the component B comprises the following steps: and mixing hydrophilic modified Hexamethylene Diisocyanate (HDI), propylene glycol methyl ether acetate (PMA) and a water scavenger to obtain the component B. In one embodiment, the method of preparing component B comprises: and taking a dry and anhydrous container, adding hydrophilic modified Hexamethylene Diisocyanate (HDI), propylene glycol methyl ether acetate (PMA) and a water scavenger into the container, mixing and stirring uniformly, and then sub-packaging into a closed iron tank to obtain the component B. The hydrophilic modified Hexamethylene Diisocyanate (HDI), propylene glycol methyl ether acetate (PMA) and the water scavenger are the same as the above and are not repeated.
The component A and the component B prepared by the method are mixed to obtain the low-foam water-borne wood paint applied to reciprocating spraying, which has no dark bubbles and prickly heat during polishing and gives consideration to sagging resistance and leveling property. The application can prepare the component A and the component B firstly, and then mix the component A and the component B to obtain the water-based wood lacquer. The application has no sequence in the synthesis sequence of the component A and the component B. The proportion of the component A and the component B in the application is the same as that described above, and the description is omitted.
The application also provides a wood ware, which comprises a wood substrate and the water-based wood ware paint coated on the surface of the wood substrate or the water-based wood ware paint prepared by the preparation method.
The application provides a water-based wood lacquer and a preparation method thereof. The water-based wood paint provided by the application is low-foam, free of dark bubbles and prickly heat when polished, and capable of resisting sagging and leveling, is environment-friendly, suitable for modern mechanical and digital production, high in production efficiency and less in paint film defect. The water-based wood paint provided by the application has the advantages that through the selection of raw materials and auxiliary materials, the collocation of the defoaming agent and the adjustment of the production process, even if the water-based wood paint is sprayed under continuous atmospheric pressure, the foam of a paint film is little, and a small amount of foam can break foam immediately after being sprayed. The sagging resistance and leveling are difficult to be simultaneously combined by two contradictors, and the ordinary water-based paint has good sagging resistance, so that the paint film is poor in sagging resistance or good in sagging resistance, and the water-based wood paint provided by the application can solve the problem, has good sagging resistance and leveling effects, and has a very flat large panel paint film. The preparation method of the water-based wood coating provided by the application is simple to operate and can be used for continuous production. Experiments show that the water-based wood lacquer provided by the application is used for reciprocating spraying, does not foam, does not have dark bubbles, does not block guns, and has sagging resistance and leveling, and the adhesive force reaches level 0.
Detailed Description
The application discloses a water-based wood lacquer and a preparation method thereof. Those skilled in the art can, with the benefit of this disclosure, suitably modify the process parameters to achieve this. It is expressly noted that all such similar substitutions and modifications will be apparent to those skilled in the art, and are deemed to be included in the present application. While the methods and applications of this application have been described in terms of preferred embodiments, it will be apparent to those skilled in the relevant art that the application can be practiced and practiced with modification and alteration and combination of the methods and applications herein without departing from the spirit and scope of the application.
All the raw materials of the present application are not particularly limited in their sources, and may be purchased on the market or prepared according to conventional methods well known to those skilled in the art. All the raw materials of the present application are not particularly limited in purity, and analytical purity is preferably used in the present application. All raw materials of the application are of the conventional grades in the field, each grade is clear and definite in the field of relevant application, and the person skilled in the art can purchase the raw materials from the market according to the grade and the corresponding application. The materials in the examples of the present application are all commercially available, and the brands and manufacturers are consistent with those described in the specification of the present application.
The application is further illustrated by the following examples:
example 1
The water-borne wood paint suitable for reciprocating spraying is prepared according to the following proportion:
and (3) a component A:
aqueous hydroxypropionic acid resin XK102:50 parts by weight; cosolvent texanol:3 parts by weight; defoaming agent tego airex901W:0.2 parts by weight; defoamer tego 810:0.2 parts by weight; defoamer T4201A:0.5 parts by weight; wetting agent tego wet4100:0.3 parts by weight; dispersant BYK190:0.5 parts by weight; titanium white powder R838:15 parts by weight; calcium powder: 15 parts by weight; talc powder: 5 parts by weight; rheology auxiliary UH-420:0.2 parts by weight; thickener PUR65:0.5 parts by weight; mildew preventive BEK-200L:0.2 parts by weight; deionized water: 9 parts by weight;
and the component B comprises the following components:
hydrophilically modified hexamethylene diisocyanate 305:75 parts by weight; propylene glycol methyl ether acetate PMA:24 parts by weight; water scavenger Additive Ti:1 part by weight;
the weight ratio of the component A to the component B is 100:6.
the preparation method comprises the following steps:
the preparation method of the component A comprises the following steps:
1) Filtering resin XK102 with a 300-mesh filter screen into a clean container, adding tego airex901W, adjusting a dispersing machine to 1600r/min, and dispersing for more than 30 min; spraying two drops of wetting agent in a sampling drop manner to observe whether the appearance of a coating film is shrinkage cavity or not, and closing a dispersing machine to perform static defoaming after no shrinkage cavity is confirmed;
2) Taking a second cylinder, adding deionized water, BYK190, texanol and part of T4201A respectively, adjusting the disperser to 450r/min, stirring for 5min, adding titanium dioxide, calcium carbonate and talcum powder with formula amount while stirring, adjusting the disperser to 1600r/min, and dispersing for 45min until the fineness is less than 10 microns;
3) Slowly adding the materials which are well dispersed in the second cylinder into the first cylinder which is well dispersed and defoamed, stirring while adding, controlling the rotating speed of a dispersing machine to be 450r/min, slowly adding the PUR65, the BEK-200L, UH-420 and the rest T4201A according to the formula amount, finally adding the pre-mixed liquid of tego 810 and tego wet4100, standing for defoaming for 12 hours after uniformly stirring, and filtering and packaging by a 300-mesh filter screen to obtain a component A;
the preparation method of the component B comprises the following steps: taking a dry and anhydrous container, adding 305, PMA and Additive Ti at one time, uniformly mixing and stirring, and then sub-packaging into a closed iron tank to obtain a component B;
the component A and the component B are mixed according to the proportion to prepare the water-based wood coating which is suitable for reciprocating spraying, does not foam, does not have dark bubbles, does not block guns and has both sagging resistance and leveling.
Example 2
The water-borne wood paint suitable for reciprocating spraying is prepared according to the following proportion:
and (3) a component A:
aqueous hydroxypropionic acid resin XK102:47 parts by weight; cosolvent dipropylene glycol butyl ether: 4 parts by weight; defoaming agent tego airex902W:0.5 parts by weight; defoamer BYK 024:0.4 parts by weight; defoamer NXZ:0.6 parts by weight; wetting agent tego wet 270:0.3 parts by weight; dispersant SE5040:0.5 parts by weight; titanium white powder R838:18 parts by weight; calcium powder: 13 parts by weight; talc powder: 5 parts by weight; rheology adjuvant coapsur 2025:0.2 parts by weight; thickener XS83:0.8 parts by weight; mildew preventive BEK-200L:0.2 parts by weight; deionized water: 9 parts by weight;
and the component B comprises the following components:
hydrophilically modified hexamethylene diisocyanate 305:80 parts by weight; propylene glycol methyl ether acetate PMA:19 parts by weight; water scavenger Additive Ti:1 part by weight;
the weight ratio of the component A to the component B is 100:5.
the preparation method comprises the following steps:
the preparation method of the component A comprises the following steps:
1) Filtering resin XK102 with a 300-mesh filter screen into a clean container, adding tego airex902W, adjusting a dispersing machine to 1600r/min, and dispersing for more than 30 min; spraying two drops of wetting agent in a sampling drop manner to observe whether the appearance of a coating film is shrinkage cavity or not, and closing a dispersing machine to perform static defoaming after no shrinkage cavity is confirmed;
2) Adding deionized water, SE5040, dipropylene glycol butyl ether and part of NXZ into a second cylinder respectively, adjusting the disperser to 450r/min, stirring for 5min, adding titanium dioxide, calcium carbonate and talcum powder with formula amount while stirring, adjusting the disperser to 1600r/min, and dispersing for 45min until the fineness is less than 10 microns;
3) Slowly adding the materials which are well dispersed in the second cylinder into the first cylinder which is well dispersed and defoamed, stirring while adding, controlling the rotating speed of a dispersing machine to be 450r/min, slowly adding the PUR65, the BEK-200L, UH-420 and the rest T4201A according to the formula amount, finally adding the pre-mixed liquid of BYK024 and tego wet270, standing for defoaming for 12 hours after uniformly stirring, and filtering and packaging by a 300-mesh filter screen to obtain a component A;
the preparation method of the component B comprises the following steps: taking a dry and anhydrous container, adding 305,PMA,Additive Ti at one time, uniformly mixing and stirring, and then sub-packaging into a closed iron tank to obtain a component B;
the component A and the component B are mixed according to the proportion to prepare the water-based wood coating which is suitable for reciprocating spraying, does not foam, does not have dark bubbles, does not block guns and has both sagging resistance and leveling.
Comparative example 1
The water-borne wood paint suitable for reciprocating spraying is prepared according to the following proportion:
and (3) a component A:
resin 383:50 parts by weight; cosolvent texanol:3 parts by weight; defoaming agent tego airex901W:0.2 parts by weight; defoamer tego 810:0.2 parts by weight; defoamer T4201A:0.5 parts by weight; wetting agent tego wet4100:0.3 parts by weight; dispersant BYK190:0.5 parts by weight; titanium white powder R838:15 parts by weight; calcium powder: 15 parts by weight; talc powder: 5 parts by weight; rheology auxiliary UH-420:0.2 parts by weight; thickener PUR65:0.5 parts by weight; mildew preventive BEK-200L:0.2 parts by weight; deionized water: 9 parts by weight;
and the component B comprises the following components:
hydrophilically modified hexamethylene diisocyanate 305:75 parts by weight; propylene glycol methyl ether acetate PMA:24 parts by weight; water scavenger Additive Ti:1 part by weight;
the weight ratio of the component A to the component B is 100:6.
the preparation method comprises the following steps:
the preparation method of the component A comprises the following steps:
1) Filtering resin 383 with formula amount in a clean container by a 300-mesh filter screen, adding tego airex901W, adjusting a dispersing machine to 1600r/min, and dispersing for more than 30 min; spraying two drops of wetting agent in a sampling drop manner to observe whether the appearance of a coating film is shrinkage cavity or not, and closing a dispersing machine to perform static defoaming after no shrinkage cavity is confirmed;
2) Adding deionized water, BYK190, texanol and part of T4201A into a second cylinder respectively, adjusting the disperser to 450r/min, stirring for 5min, adding titanium dioxide, calcium carbonate and talcum powder with formula amount while stirring, adjusting the disperser to 1600r/min, and dispersing for 45min until the fineness is less than 10 micrometers;
3) Slowly adding the materials which are well dispersed in the second cylinder into the first cylinder which is well dispersed and defoamed, stirring while adding, controlling the rotating speed of a dispersing machine to be 450r/min, slowly adding the PUR65, the BEK-200L, UH-420 and the rest T4201A according to the formula amount, finally adding the pre-mixed liquid of tego 810 and tego wet4100, standing for defoaming for 12 hours after uniformly stirring, and filtering and packaging by a 300-mesh filter screen to obtain a component A;
the preparation method of the component B comprises the following steps: taking a dry and anhydrous container, adding 305, PMA and Additive Ti at one time, uniformly mixing and stirring, and then sub-packaging into a closed iron tank to obtain a component B;
and mixing the component A and the component B according to the proportion to prepare the water-based wood coating.
Comparative example 2
The water-borne wood paint suitable for reciprocating spraying is prepared according to the following proportion:
and (3) a component A:
aqueous hydroxypropionic acid resin XK102:50 parts by weight; cosolvent texanol:3 parts by weight; defoaming agent tego airex901W:0.4 parts by weight; defoamer T4201A:1.1 parts by weight; wetting agent tego wet4100:0.3 parts by weight; dispersant BYK190:0.5 parts by weight; titanium white powder R838:15 parts by weight; calcium powder: 15 parts by weight; talc powder: 5 parts by weight; rheology auxiliary UH-420:0.2 parts by weight; thickener PUR65:0.5 parts by weight; mildew preventive BEK-200L:0.2 parts by weight; deionized water: 9 parts by weight;
and the component B comprises the following components:
hydrophilically modified hexamethylene diisocyanate 305:75 parts by weight; propylene glycol methyl ether acetate PMA:24 parts by weight; water scavenger Additive Ti:1 part by weight;
the weight ratio of the component A to the component B is 100:6.
the preparation method comprises the following steps:
the preparation method of the component A comprises the following steps:
1) Filtering resin XK102 with a 300-mesh filter screen into a clean container, adding tego airex901W, adjusting a dispersing machine to 1600r/min, and dispersing for more than 30 min; spraying two drops of wetting agent in a sampling drop manner to observe whether the appearance of a coating film is shrinkage cavity or not, and closing a dispersing machine to perform static defoaming after no shrinkage cavity is confirmed;
2) Adding deionized water, BYK190, texanol and part of T4201A into a second cylinder respectively, adjusting the disperser to 450r/min, stirring for 5min, adding titanium dioxide, calcium carbonate and talcum powder with formula amount while stirring, adjusting the disperser to 1600r/min, and dispersing for 45min until the fineness is less than 10 micrometers;
3) Slowly adding the materials which are well dispersed in the second cylinder into the first cylinder which is well dispersed and defoamed, stirring while adding, controlling the rotating speed of a dispersing machine to be 450r/min, slowly adding the PUR65, the BEK-200L, UH-420 and the rest T4201A according to the formula amount, finally adding the tego wet4100 pre-mixed liquid, standing for defoaming for 12 hours after stirring uniformly, and filtering and packaging by a 300-mesh filter screen to obtain a component A;
the preparation method of the component B comprises the following steps: taking a dry and anhydrous container, adding 305,PMA,Additive Ti at one time, uniformly mixing and stirring, and then sub-packaging into a closed iron tank to obtain a component B;
and mixing the component A and the component B according to the proportion to prepare the water-based wood coating.
Example 3
The aqueous white primers prepared in examples 1 to 2 and comparative examples 1 to 2 and commercially available conventional aqueous white primer (Guangzhou Kangzheng polymer) HD102 were each added with a curing agent in a proportion and adjusted to the same viscosity, and sprayed on the same reciprocator with constant air pressure and flow rate, and sprayed on a polished flat triamine plate with a coating amount of 220g/m 2 Testing how long the spraying of the reciprocating machine can block the gun, testing the sagging condition of the vertical surface of the flat plate after the spraying, whether the wet film has bubbles, and the flatness and the grindability of the paint film on the flat plate after the drying, and polishing whether pinholes and dark bubbles exist or not.
The test results are shown in tables 1 and 2:
TABLE 1
TABLE 2
From the comparison result of example 3, it can be seen that: the water-based wood coating which is suitable for reciprocating spraying, has no foaming, no dark bubbles, no gun blockage and both sagging resistance and leveling is very suitable for continuous reciprocating spraying production, can greatly improve the production efficiency, reduce the defect of a paint film and reduce the reworking rate.
The foregoing is only a preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art, who is within the scope of the present application, should make equivalent substitutions or modifications according to the technical scheme of the present application and the inventive concept thereof, and should be covered by the scope of the present application.
Claims (10)
1. The water-based wood lacquer is characterized by comprising a component A and a component B;
the component A comprises:
hydroxy acrylic resin: 40-60 parts by weight;
and (3) a defoaming agent: 0.2 to 0.5 weight portion; the defoaming agent is polyether siloxane copolymer defoaming agent;
microbubble defoamer: 0.1 to 0.4 weight portion; the micro-foam defoamer is at least one of polyether siloxane copolymer defoamer or organic silicon defoamer;
large bubble defoamer: 0.4 to 0.8 weight portion; the large foam defoamer is at least one of mineral oil defoamer or metal soap defoamer;
the component B comprises:
hydrophilically modified hexamethylene diisocyanate: 60-80 parts by weight;
and propylene glycol methyl ether acetate: 19-40 parts by weight.
2. The aqueous wood lacquer according to claim 1, characterized in that the component a further comprises:
cosolvent: 3 to 6 parts by weight;
wetting agent: 0.2 to 0.5 weight portion;
and (3) a thickening agent: 0.5 to 1.2 weight portions;
mildew preventive: 0.15 to 0.5 weight portion;
rheology aid: 0.2 to 1.5 weight portions;
dispersing agent: 0.1 to 1.0 weight portion;
titanium white powder: 10-20 parts by weight;
calcium carbonate: 10-20 parts by weight;
talc powder: 0 to 8 parts by weight;
and water: 0 to 10 parts by weight;
the component B further comprises:
water scavenger: 0.5 to 2 parts by weight.
3. The aqueous wood lacquer according to claim 1, wherein the weight ratio of component a to component B is 100:5 to 10.
4. The aqueous wood lacquer according to claim 1, wherein in component a, the hydroxy acrylic resin is selected from at least one of unstable-foam medium hydroxy acrylic resin or unstable-foam low hydroxy acrylic resin;
the hydroxyl content of the medium hydroxyl acrylic resin is 1.5% -3%;
the hydroxyl content of the low-hydroxyl acrylic resin is 1% -1.2%.
5. The aqueous wood lacquer according to claim 1, characterized in that in component a, the deaerating agent is selected from at least one of the di-high tego airex901W or di-high tego airex 902W;
the microbubble defoamer is at least one selected from the group consisting of Di-high tego airex810 and Pick BYK 024;
the large bubble defoaming agent is at least one selected from the group consisting of the Shi lan T4201A and the Nordic NXZ.
6. The aqueous wood lacquer according to claim 2, wherein, in component A,
the cosolvent is selected from at least one of alcohol ester cosolvent, alcohol ether cosolvent or alcohol cosolvent;
the wetting agent is at least one selected from siloxane type gemini structure wetting agents or polyether siloxane copolymer wetting agents;
the thickener is selected from polyurethane associative thickeners;
the mildew preventive is selected from isothiazolinone in-tank mildew preventive;
the rheological aid is selected from polyurethane association type rheological aids;
the dispersant is selected from polymeric dispersants;
in the component B, the water scavenger is selected from isocyanate type water scavengers.
7. The aqueous wood lacquer according to claim 2, characterized in that the component a comprises:
hydroxy acrylic resin: 40-55 parts by weight; and (3) a defoaming agent: 0.2 to 0.5 weight portion; microbubble defoamer: 0.15 to 0.25 weight portion; large bubble defoamer: 0.5 to 0.7 weight portion; cosolvent: 3-5 parts by weight; wetting agent: 0.3 to 0.4 weight portion; and (3) a thickening agent: 0.8 to 1.2 weight portions; mildew preventive: 0.3 to 0.5 weight portion; rheology aid: 0.5 to 1.5 weight portions; dispersing agent: 0.1 to 1.0 weight portion; titanium white powder: 10-20 parts by weight; calcium carbonate: 10-20 parts by weight; talc powder: 0 to 8 parts by weight; and water: 8-10 parts by weight;
the component B comprises:
hydrophilically modified hexamethylene diisocyanate: 60-80 parts by weight; propylene glycol methyl ether acetate: 20-40 parts by weight; and a water scavenger: 0.5 to 2 parts by weight.
8. The aqueous wood lacquer according to claim 7, characterized in that it comprises a weight ratio of 100:6, component a and component B;
the component A comprises: hydroxy acrylic resin: 50 parts by weight; and (3) a defoaming agent: 0.2 parts by weight; microbubble defoamer: 0.2 parts by weight; large bubble defoamer: 0.5 parts by weight; cosolvent: 3 parts by weight; wetting agent: 0.3 parts by weight; and (3) a thickening agent: 0.5 parts by weight; mildew preventive: 0.2 parts by weight; rheology aid: 0.2 parts by weight; dispersing agent: 0.5 parts by weight; titanium white powder: 15 parts by weight; calcium carbonate: 15 parts by weight; talc powder: 5 parts by weight; and water: 9 parts by weight;
the component B comprises: hydrophilically modified hexamethylene diisocyanate: 75 parts by weight; propylene glycol methyl ether acetate: 24 parts by weight; and a water scavenger: 1 part by weight;
or alternatively, the process may be performed,
the weight ratio of the components is 100: component A and component B of 5;
the component A comprises: hydroxy acrylic resin: 47 parts by weight; and (3) a defoaming agent: 0.5 parts by weight; microbubble defoamer: 0.4 parts by weight; large bubble defoamer: 0.6 parts by weight; cosolvent: 4 parts by weight; wetting agent: 0.3 parts by weight; and (3) a thickening agent: 0.5 parts by weight; mildew preventive: 0.2 parts by weight; rheology aid: 0.2 parts by weight; dispersing agent: 0.5 parts by weight; titanium white powder: 18 parts by weight; calcium carbonate: 13 parts by weight; talc powder: 5 parts by weight; and water: 9 parts by weight;
the component B comprises: hydrophilically modified hexamethylene diisocyanate: 80 parts by weight; propylene glycol methyl ether acetate: 19 parts by weight; and a water scavenger: 1 part by weight.
9. The method for preparing the aqueous wood lacquer according to any one of claims 1 to 8, characterized by comprising: and mixing the component A and the component B to obtain the water-based wood lacquer.
10. A wood article comprising a wood substrate and the aqueous wood lacquer according to any one of claims 1 to 8 or the aqueous wood lacquer prepared by the preparation method according to claim 9 coated on the surface of the wood substrate.
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