CN115109478A - White primer and preparation method thereof - Google Patents
White primer and preparation method thereof Download PDFInfo
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- CN115109478A CN115109478A CN202210841507.4A CN202210841507A CN115109478A CN 115109478 A CN115109478 A CN 115109478A CN 202210841507 A CN202210841507 A CN 202210841507A CN 115109478 A CN115109478 A CN 115109478A
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- 238000002360 preparation method Methods 0.000 title abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000002562 thickening agent Substances 0.000 claims abstract description 25
- 239000000839 emulsion Substances 0.000 claims abstract description 20
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 16
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 16
- 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 abstract description 16
- 239000006184 cosolvent Substances 0.000 claims abstract description 14
- 239000002270 dispersing agent Substances 0.000 claims abstract description 14
- 239000000080 wetting agent Substances 0.000 claims abstract description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 239000008367 deionised water Substances 0.000 claims abstract description 8
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 8
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 8
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 20
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 12
- 238000004132 cross linking Methods 0.000 claims description 11
- CUDYYMUUJHLCGZ-UHFFFAOYSA-N 2-(2-methoxypropoxy)propan-1-ol Chemical compound COC(C)COC(C)CO CUDYYMUUJHLCGZ-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 229920001577 copolymer Polymers 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000011863 silicon-based powder Substances 0.000 claims description 6
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 5
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 claims description 4
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 4
- 229960002887 deanol Drugs 0.000 claims description 4
- 239000012972 dimethylethanolamine Substances 0.000 claims description 4
- 229920000570 polyether Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 229940058020 2-amino-2-methyl-1-propanol Drugs 0.000 claims description 3
- CBTVGIZVANVGBH-UHFFFAOYSA-N aminomethyl propanol Chemical compound CC(C)(N)CO CBTVGIZVANVGBH-UHFFFAOYSA-N 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 239000013530 defoamer Substances 0.000 claims description 3
- 239000000049 pigment Substances 0.000 claims description 2
- -1 polysiloxane Polymers 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 229910021485 fumed silica Inorganic materials 0.000 claims 1
- 239000003973 paint Substances 0.000 abstract description 12
- 238000010276 construction Methods 0.000 abstract description 6
- 238000001035 drying Methods 0.000 abstract description 5
- 238000000227 grinding Methods 0.000 abstract description 4
- 230000006866 deterioration Effects 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000004880 explosion Methods 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 25
- 238000000576 coating method Methods 0.000 description 13
- 239000011248 coating agent Substances 0.000 description 11
- 238000007789 sealing Methods 0.000 description 9
- 239000002023 wood Substances 0.000 description 8
- 239000010703 silicon Substances 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000011094 fiberboard Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- QGWDKKHSDXWPET-UHFFFAOYSA-E pentabismuth;oxygen(2-);nonahydroxide;tetranitrate Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[O-2].[Bi+3].[Bi+3].[Bi+3].[Bi+3].[Bi+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O QGWDKKHSDXWPET-UHFFFAOYSA-E 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- DMKSVUSAATWOCU-HROMYWEYSA-N loteprednol etabonate Chemical compound C1CC2=CC(=O)C=C[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@@](C(=O)OCCl)(OC(=O)OCC)[C@@]1(C)C[C@@H]2O DMKSVUSAATWOCU-HROMYWEYSA-N 0.000 description 2
- 239000000693 micelle Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 125000001165 hydrophobic group Chemical group 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229910021487 silica fume Inorganic materials 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 229910052623 talc Inorganic materials 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/002—Priming paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/43—Thickening agents
- C09D7/44—Combinations of two or more thickening agents
-
- 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
- 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
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 invention discloses a white primer and a preparation method thereof, and the raw materials of the white primer comprise water-based acrylic emulsion, deionized water, a pH regulator, a wetting agent, a defoaming agent, a dispersing agent, a leveling agent, a cosolvent, titanium dioxide, silica micropowder, talcum powder and a thickening agent. The product of the invention has the advantages of water-based environmental protection, good stability, strong adhesive force, quick drying, easy grinding, difficult puncturing, convenient construction, low cost, non-combustion, non-explosion, no public nuisance and no deterioration during low-temperature storage. And also has the characteristics of convenient and fast construction, flat and smooth paint film, good hand feeling and the like.
Description
Technical Field
The invention relates to the technical field of coatings, and particularly relates to a white primer and a preparation method thereof.
Background
The water-based wood paint coating is a water-based paint which takes water as a diluent, is harmless to human bodies, does not pollute the environment, is used for indoor wood and wood products, has the functions of decoration, protection and prolonging the service life of furniture, and is a novel water-based environment-friendly paint provided for indoor environment-friendly safety by people in the social development process. However, the aqueous wood lacquer coating in the prior art has problems of hardness, fullness, price and the like, so that the industrial popularization and application of the aqueous wood lacquer coating are limited to a certain extent, especially for uneven substrates such as clamping plates or medium density fiberboard and the like, multiple construction is often needed for sealing all fibers on the medium density fiberboard, customers often need to reduce the construction times for reducing the cost while ensuring the sealing performance, and especially when aqueous white primer is coated on the medium density fiberboard, the coating is required to be polished well, have good filling performance, be not easy to wear, dry quickly, have good sealing effect on the substrate, and have low price. However, the water-based white primer in the prior art is low in solid content and poor in sealing performance, so that when the water-based white primer is applied to sealing coating of medium density fiberboard, the following problems often occur: some have good filling property but poor sanding property; some products have good sanding property but poor sealing property and need multiple constructions; some of the white primers have good sealing performance but are not accepted by expensive customers, and the white primers also have poor storage stability and are greatly precipitated for a period of time.
Disclosure of Invention
In order to solve the technical problems, the invention provides the white primer and the preparation method thereof, the mixture of the silicon micropowder and the talcum powder is added into the white primer, the sanding property of the coating is improved, and the problem of poor stability of coatings such as thickening, precipitation and the like after the silicon micropowder and the talcum powder are added is solved by adding the self-made thickener mixture.
According to one technical scheme, the white primer comprises the following components in parts by weight: 15-25 parts of water-based self-crosslinking modified acrylic emulsion, 5-15 parts of deionized water, 0.1-0.3 part of pH regulator, 0.2-0.6 part of defoamer, 0.1-0.5 part of wetting agent, 1-2 parts of dispersant, 5-10 parts of titanium dioxide, 10-20 parts of silica powder, 3-8 parts of talcum powder, 2-5 parts of cosolvent, 0.1-0.5 part of flatting agent and 0.2-0.8 part of thickener.
Preferably, the aqueous self-crosslinking modified acrylic emulsion is one or a mixture of more of XK-87, XK-82, A640 and R3638;
preferably, the pH regulator is one or a mixture of 2-amino-2-methyl-1-propanol, dimethylethanolamine and ammonia water;
preferably, the defoaming agent is polyether modified siloxane copolymer emulsion containing gas phase silicon dioxide;
further preferably, the antifoaming agent is at least one of Tego Airex 901, Tego Airex 902, Tego Foamex 825 of Digao Tego, and Byk-024, Byk028 of ByK;
preferably, the wetting agent is polyether modified polysiloxane;
further preferably, the wetting agent is at least one of Tego Twin 4000, Tego Twin 4100, Tego Wet245 of Tego and Byk-346 and Byk-3455 of ByK;
preferably, the dispersant is a copolymer aqueous solution containing pigment affinity groups;
more preferably, the dispersant is at least one of Tego Dispres 750W, Tego Dispres735W, Tego Dispres 755W and Tego Dispres 760W of digo Tego;
preferably, the cosolvent is one or two of dipropylene glycol methyl ether and alcohol ester-12;
further preferably, the cosolvent is a mixture of dipropylene glycol methyl ether and alcohol ester-12 in a mass ratio of 3: 4;
preferably, the mass ratio of the silicon micro powder to the talcum powder is 9: 5;
preferably, the thickener is one or more of nonionic polyurethane thickener and alkali swelling thickener of acrylate copolymer;
further preferably, the thickener is a mixture of more than one of PUR40, RM-8W, OMG-0625, PUR62 and PUR 65;
further preferably, the thickener comprises a mixture of PUR40, RM-8W, OMG-0625 in a mass ratio of 1:1: 1.
According to the second technical scheme, the preparation method of the white primer comprises the following steps:
(1) according to the formula amount, sequentially adding the aqueous self-crosslinking modified acrylic emulsion, deionized water, a pH regulator, a wetting agent and a defoaming agent into a container, and stirring at the speed of 800-;
(2) adding a dispersing agent, titanium dioxide, silicon powder and talcum powder, and stirring for 30 minutes at the speed of 1000-1200rpm, wherein the fineness is less than or equal to 30 mu m;
(3) adding cosolvent and leveling agent, and stirring at the speed of 1000-;
(4) adding the thickening agent, stirring at the speed of 600-.
Compared with the prior art, the invention has the following beneficial effects:
the white primer is a water-based woodenware paint high-solid-content sanding-resistant white primer, and the emulsion is selected from water-based self-crosslinking modified acrylic emulsion, so that the paint has the advantages of good wettability, high stability and good powder wrapping property, can be frozen and thawed for unlimited times without deterioration, and is low in VOC. The water paint prepared by the emulsion has high drying speed and is surface-dried for 15 minutes.
The silicon powder is added to improve the hardness of the coating, the coating is not easy to wear during polishing, the talcum powder can obviously improve the polishing performance of the coating, and the silicon powder and the talcum powder are mixed according to the proportion of 9:5 to exert the advantages of the silicon powder and the talcum powder to the maximum extent.
The thickener mixture is selected to make the thickener exert viscosity required by different shearing forces of high, low and medium. The molecular structure of the thickening agent is introduced with hydrophilic groups and hydrophobic groups, so that the thickening agent presents certain properties of a surfactant. When the concentration of the aqueous solution exceeds a certain specific concentration, micelles are formed, and the micelles and polymer particles are associated to form a network structure, so that the viscosity of the system is increased. Solves the problem of poor stability of thickening, precipitation and the like of the coating caused by adding the silicon powder and the talcum powder, and has no abnormity after being stored for 60 days at 50 ℃.
Detailed Description
Reference will now be made in detail to various exemplary embodiments of the invention, the detailed description should not be construed as limiting the invention but as a more detailed description of certain aspects, features and embodiments of the invention. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Further, for numerical ranges in this disclosure, it is understood that each intervening value, between the upper and lower limit of that range, is also specifically disclosed. Every smaller range between any stated value or intervening value in a stated range and any other stated or intervening value in that stated range is encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention. All documents mentioned in this specification are incorporated by reference herein for the purpose of disclosing and describing the methods and/or materials associated with the documents. In case of conflict with any incorporated document, the present specification will control.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the present disclosure without departing from the scope or spirit of the disclosure. Other embodiments will be apparent to those skilled in the art from consideration of the specification. The description and examples are intended to be illustrative only.
Example 1
The dosage of each component is as follows:
the aqueous self-crosslinking modified acrylic emulsion is a mixture of XK-87 and XK-82 in a ratio of 2: 1.
The pH regulator is a mixture of dimethylethanolamine and ammonia water in a ratio of 1: 1; the antifoaming agent is TegoAirex 902 of Tego high; the wetting agent is Tego Twin 4100 of Tego di.
The dispersant is TegoDispres 750W of Tego; the cosolvent is a mixture of dipropylene glycol methyl ether and alcohol ester-12, and the volume ratio is 3: 4.
The thickening agent is a mixture of PUR40 and RM-8W, OMG-0625, and the mixing ratio is 1:1: 1.
The preparation method comprises the following steps:
(1) according to the formula amount, sequentially adding the water-based acrylic emulsion, deionized water, a pH regulator, a wetting agent and a defoaming agent into a paint mixing cylinder, and stirring at 800rpm for 20 min;
(2) adding the dispersing agent, the titanium dioxide, the silicon micropowder and the talcum powder according to the formula amount, stirring for 30min at the speed of 1000rpm, and grinding until the fineness is less than or equal to 30 mu m;
(3) adding a cosolvent and a leveling agent according to the formula amount, and stirring at 1000rpm for 15 min;
(4) adding a thickening agent according to the mixture amount, stirring at 700rpm for 10min, and adjusting the viscosity to obtain the water-based wood paint white primer with the viscosity of 60s at 25 ℃.
Example 2
The dosage of each component is as follows:
the aqueous self-crosslinking modified acrylic emulsion is a mixture of XK-87 and XK-82 in a ratio of 1: 1.
The pH regulator is ammonia water; the antifoaming agent is a mixture of Byk-024 and Byk028 of ByK; the wetting agent is a mixture of Tego Twin 4000, Tego Twin 4100 and Tego Wet245 of Tego.
The dispersant is TegoDispres 755W of Tego; the cosolvent is a mixture of dipropylene glycol methyl ether and alcohol ester-12, and the volume ratio is 3: 4.
The thickening agent is a mixture of PUR40, RM-8W, OMG-0625, PUR62 and PUR65, and the mixing ratio is 1:1:1:2: 1.
The preparation method comprises the following steps:
(1) according to the formula amount, sequentially adding the water-based acrylic emulsion, deionized water, a pH regulator, a wetting agent and a defoaming agent into a paint mixing cylinder, and stirring at 800rpm for 20 min;
(2) adding a dispersing agent, titanium dioxide, silicon micropowder and talcum powder according to the formula amount, stirring for 30min at the speed of 1000rpm, and grinding until the fineness is less than or equal to 30 mu m;
(3) adding a cosolvent and a leveling agent according to the formula amount, and stirring at 1200rpm for 10 min;
(4) adding a thickening agent according to the mixture amount, stirring for 15min at the speed of 600 plus 800rpm, and adjusting the viscosity to obtain the water-based wood paint white primer with the viscosity of 62s at 25 ℃.
Example 3
The dosage of each component is as follows:
the waterborne self-crosslinking modified acrylic emulsion is R3638.
The pH regulator is a mixture of 2-amino-2-methyl-1-propanol, dimethylethanolamine and ammonia water in a ratio of 1:2: 1; the antifoaming agent is a mixture of TegoAirex 901, TegoAirex 902 of Tego, Byk-024 and Byk028 of Byak BYK in a ratio of 1:1: 1; the wetting agent is Tego Wet245 Digao Tego.
The dispersant is a mixture of TegoDispres 750W, TegoDispres 735W of Tego of Digao, and the ratio is 2: 1; the cosolvent is a mixture of dipropylene glycol methyl ether and alcohol ester-12, and the volume ratio is 3: 4.
The thickening agent is a mixture of RM-8W, OMG-0625 and PUR62 in a ratio of 1:1: 1.
The preparation method comprises the following steps:
(1) according to the formula amount, sequentially adding the water-based acrylic emulsion, deionized water, a pH regulator, a wetting agent and a defoaming agent into a paint mixing cylinder, and stirring at 900rpm for 18 min;
(2) adding a dispersing agent, titanium dioxide, silicon micropowder and talcum powder according to the formula amount, stirring at 1100rpm for 25min, and grinding until the fineness is less than or equal to 30 mu m;
(3) adding a cosolvent and a leveling agent according to the formula amount, and stirring at 1100rpm for 12 min;
(4) adding a thickening agent according to the mixture amount, stirring at 700rpm for 12min, and adjusting the viscosity to obtain the water-based wood paint white primer with the viscosity of 65s at 25 ℃.
Example 4
The difference from example 1 is that the thickener is PUR 40.
Example 5
The difference from example 1 is that no talc is added.
Example 6
The difference from example 1 is that no silica fume was added.
Example 7
The difference from example 1 is that the aqueous self-crosslinking modified acrylic emulsion is modified into unmodified aqueous acrylic emulsion XK-12.
The white base paints prepared in examples 1 to 7 were brushed on medium density fiberboard and brushed 2 times with a non-marking brush at 4-hour intervals, and performance tests were carried out by the following methods:
surface drying time: a 100-micron wire rod is used for preparing a film on a glass plate, and the film is tested according to the surface drying and middle drying method GB/T1728-1979;
hardness: according to the test specified in GB/T6739, the pencil is a Chinese brand 101 drawing pencil;
sanding property: and (3) manually polishing the film for 20 times by using No. 400 waterproof abrasive paper, wherein the film is easily polished into a flat and smooth surface if a coating film is formed. Then rated "easy to buff" (rating 1-5,1 being worst, 5 being best);
sealing property: after construction, the paint film is completely dried, and the condition that the board has color bleeding or not is seen, and the color bleeding indicates that the sealing property is poor. ,
the detection results are shown in table 1;
TABLE 1
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. The white primer is characterized by comprising the following components in parts by weight: 15-25 parts of water-based self-crosslinking modified acrylic emulsion, 5-15 parts of deionized water, 0.1-0.3 part of pH regulator, 0.2-0.6 part of defoamer, 0.1-0.5 part of wetting agent, 1-2 parts of dispersant, 5-10 parts of titanium dioxide, 10-20 parts of silica powder, 3-8 parts of talcum powder, 2-5 parts of cosolvent, 0.1-0.5 part of flatting agent and 0.2-0.8 part of thickener.
2. The white primer according to claim 1, wherein the aqueous self-crosslinking modified acrylic emulsion is one or more of XK-87, XK-82, A640 and R3638.
3. The white primer according to claim 1, wherein the pH regulator is one or more of 2-amino-2-methyl-1-propanol, dimethylethanolamine and ammonia water.
4. The white primer according to claim 1, wherein the defoamer is a polyether modified siloxane copolymer emulsion containing fumed silica.
5. The white primer according to claim 1, characterized in that the wetting agent is a polyether modified polysiloxane.
6. The white primer according to claim 1, wherein the dispersant is an aqueous solution of a copolymer containing pigment affinic groups.
7. The white primer according to claim 1, wherein the cosolvent is one or both of dipropylene glycol methyl ether and alcohol ester-12.
8. The white primer according to claim 1, wherein the mass ratio of the silica micropowder to the talc powder is 9: 5.
9. The white primer according to claim 1, wherein the thickener is one or more of a nonionic polyurethane thickener and an alkali-swellable thickener of an acrylate copolymer.
10. The method for preparing a white primer according to any one of claims 1 to 9, comprising the steps of:
(1) according to the formula amount, sequentially adding the aqueous self-crosslinking modified acrylic emulsion, deionized water, a pH regulator, a wetting agent and a defoaming agent into a container, and stirring at the speed of 800-;
(2) adding a dispersing agent, titanium dioxide, silicon powder and talcum powder, and stirring for 30 minutes at the speed of 1000-1200rpm, wherein the fineness is less than or equal to 30 mu m;
(3) adding cosolvent and leveling agent, and stirring at the speed of 1000-;
(4) adding the thickening agent, stirring at the speed of 600-.
Priority Applications (1)
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| CN101812260A (en) * | 2010-04-12 | 2010-08-25 | 中华制漆（深圳）有限公司 | Multifunctional water-based white primer and preparation method thereof |
| CN102643586A (en) * | 2012-05-08 | 2012-08-22 | 合众（佛山）化工有限公司 | High-solid-content quick-drying water-based white primer and preparation method thereof |
| CN103131284A (en) * | 2013-03-21 | 2013-06-05 | 叶氏化工研发（上海）有限公司 | Water-based wood white primer as well as preparation method and use method thereof |
| CN104371451A (en) * | 2014-10-29 | 2015-02-25 | 广东巴德士化工有限公司 | Single-component water-based dip-coating sealing white primer |
| CN109337474A (en) * | 2018-07-25 | 2019-02-15 | 河北晨阳工贸集团有限公司 | A kind of woodenware sealing wax and preparation method thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101812260A (en) * | 2010-04-12 | 2010-08-25 | 中华制漆（深圳）有限公司 | Multifunctional water-based white primer and preparation method thereof |
| CN102643586A (en) * | 2012-05-08 | 2012-08-22 | 合众（佛山）化工有限公司 | High-solid-content quick-drying water-based white primer and preparation method thereof |
| CN103131284A (en) * | 2013-03-21 | 2013-06-05 | 叶氏化工研发（上海）有限公司 | Water-based wood white primer as well as preparation method and use method thereof |
| CN104371451A (en) * | 2014-10-29 | 2015-02-25 | 广东巴德士化工有限公司 | Single-component water-based dip-coating sealing white primer |
| CN109337474A (en) * | 2018-07-25 | 2019-02-15 | 河北晨阳工贸集团有限公司 | A kind of woodenware sealing wax and preparation method thereof |
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