CN112143314A - Water-based high-fullness wood coating suitable for electrostatic spraying - Google Patents
Water-based high-fullness wood coating suitable for electrostatic spraying Download PDFInfo
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- CN112143314A CN112143314A CN202011037438.9A CN202011037438A CN112143314A CN 112143314 A CN112143314 A CN 112143314A CN 202011037438 A CN202011037438 A CN 202011037438A CN 112143314 A CN112143314 A CN 112143314A
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- fullness
- electrostatic spraying
- wood coating
- coating suitable
- water
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- 238000000576 coating method Methods 0.000 title claims abstract description 55
- 239000011248 coating agent Substances 0.000 title claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 239000002023 wood Substances 0.000 title claims abstract description 31
- 238000007590 electrostatic spraying Methods 0.000 title claims abstract description 27
- 239000000839 emulsion Substances 0.000 claims abstract description 23
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229920002635 polyurethane Polymers 0.000 claims abstract description 11
- 239000004814 polyurethane Substances 0.000 claims abstract description 11
- 239000002904 solvent Substances 0.000 claims abstract description 10
- 238000009736 wetting Methods 0.000 claims abstract description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000002270 dispersing agent Substances 0.000 claims abstract description 6
- 239000000654 additive Substances 0.000 claims abstract description 5
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 5
- 239000006254 rheological additive Substances 0.000 claims abstract description 5
- 230000000996 additive effect Effects 0.000 claims abstract description 3
- 239000000049 pigment Substances 0.000 claims description 6
- QCAHUFWKIQLBNB-UHFFFAOYSA-N 3-(3-methoxypropoxy)propan-1-ol Chemical compound COCCCOCCCO QCAHUFWKIQLBNB-UHFFFAOYSA-N 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 5
- 229940028356 diethylene glycol monobutyl ether Drugs 0.000 claims description 5
- JCGNDDUYTRNOFT-UHFFFAOYSA-N oxolane-2,4-dione Chemical group O=C1COC(=O)C1 JCGNDDUYTRNOFT-UHFFFAOYSA-N 0.000 claims description 5
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 4
- 229920000570 polyether Polymers 0.000 claims description 4
- 239000004094 surface-active agent Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000440 bentonite Substances 0.000 claims description 2
- 229910000278 bentonite Inorganic materials 0.000 claims description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 2
- 239000004927 clay Substances 0.000 claims description 2
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 2
- 238000009503 electrostatic coating Methods 0.000 claims description 2
- 229910021485 fumed silica Inorganic materials 0.000 claims description 2
- KWLMIXQRALPRBC-UHFFFAOYSA-L hectorite Chemical compound [Li+].[OH-].[OH-].[Na+].[Mg+2].O1[Si]2([O-])O[Si]1([O-])O[Si]([O-])(O1)O[Si]1([O-])O2 KWLMIXQRALPRBC-UHFFFAOYSA-L 0.000 claims description 2
- 229910000271 hectorite Inorganic materials 0.000 claims description 2
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 2
- -1 polydimethylsiloxane Polymers 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims 1
- 239000013530 defoamer Substances 0.000 claims 1
- 239000003973 paint Substances 0.000 abstract description 22
- 238000005491 wire drawing Methods 0.000 abstract description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000005034 decoration Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005660 chlorination reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011094 fiberboard Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000003636 chemical group Chemical group 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005686 electrostatic field Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000006115 industrial coating Substances 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920003009 polyurethane dispersion Polymers 0.000 description 1
- 238000003847 radiation curing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- 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
- 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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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 waterborne high-fullness wood coating suitable for electrostatic spraying, which belongs to the technical field of coatings and comprises, by weight, 20-40% of waterborne acrylic emulsion, 20-40% of waterborne polyurethane emulsion, 4-6% of film forming assisting solvent, 15-20% of titanium dioxide, 0.5-1% of defoaming agent, 1.5-2% of dispersing agent, 2-4% of rheological additive, 0.5-1% of wetting leveling agent and 2-5% of hand feeling additive. The water-based high-fullness wood coating provided by the invention is suitable for coating by using an electrostatic spraying method, the problems of gelatinization, wire drawing and incapability of forming a continuous and uniform paint film during electrostatic spraying can be avoided, the wrapping property of electrostatic spraying is improved through the improvement of a formula, the paint film on a sprayed plate is better leveled and higher in fineness, the mechanical property of the paint film is enhanced, and thus the high fullness of the paint film is realized.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a water-based high-fullness woodware coating suitable for electrostatic spraying.
Background
With the arrival of the low-carbon economic era, environmental protection and energy become two challenges faced by human beings in the 21 st century, and in response to the challenges, the coating industry is gradually transformed from traditional varieties which are high in pollution and energy consumption and extremely depend on products in the petroleum industry to environment-friendly and resource-saving products such as water-based coatings, radiation curing coatings, powder coatings and high-solid coatings. The water-based wood coating is one of the main varieties of industrial coatings, and is a water-based coating which is used for wood products and has decoration and protection effects. The water-based wood coating is the development direction of the future wood coating market, and has reached a consensus in the industry without doubt. In the prior European woodenware coating, the proportion of the water-based woodenware coating is up to more than 80 percent, and China is gradually developing towards the direction. Compared with the traditional solvent type woodenware coating, 50-60% of the water-based woodenware coating is water, and coating can be carried out by diluting the water-based woodenware coating with clear water on a construction site, so that the operation is more convenient. The water-based wood coating has low VOC, low toxicity and nonflammability, does not contain organic solvents such as formaldehyde, benzene and the like, and has lighter smell. In the aspect of performance, the yellowing resistance and the decoration performance of the water-based wood coating are more outstanding.
However, the existing water-based wood coatings are poorer in fullness than solvent-based coatings, and influence the hand feeling and the attractiveness of wood after coating, and how to solve the fullness problem of the water-based paint becomes a key point of attention in the field. The electrostatic spraying is a coating mode that charged paint is efficiently adsorbed on a coated workpiece along the direction of a power line under the action of an electrostatic field according to the principle that like charges repel and opposite charges attract, and through the coating mode of the electrostatic spraying, the water-based paint can endow the woodware with attractive appearance and good hand feeling, and meanwhile, the efficiency of product construction can be greatly improved. However, most of the water-based wood coatings on the market at present cannot be coated under a high-voltage state, and if the common water-based wood coatings are forcedly used for electrostatic spraying, the problems of gelling, wire drawing and failure in forming a continuous and uniform paint film are easily caused.
Disclosure of Invention
In order to overcome the defects of the prior art, the technical problems to be solved by the invention are as follows: how to use the waterborne wood coating for electrostatic spraying.
In order to solve the technical problems, the invention adopts the technical scheme that: the water-based high-fullness wood coating suitable for electrostatic spraying comprises, by weight, 20-40% of water-based acrylic emulsion, 20-40% of water-based polyurethane emulsion, 4-6% of film forming aid solvent, 15-20% of titanium dioxide, 0.5-1% of defoaming agent, 1.5-2% of dispersing agent, 2-4% of rheological additive, 0.5-1% of wetting and leveling agent and 2-5% of hand feeling additive.
The invention has the beneficial effects that: the waterborne high-fullness wood coating provided by the invention is suitable for coating by using an electrostatic spraying method, and the waterborne acrylic emulsion is adopted to match the waterborne polyurethane emulsion as a main film forming material, so that the wrapping property of electrostatic spraying is improved, a paint film on a sprayed plate is better leveled and higher in fineness, and the mechanical property of the paint film is enhanced, so that the high fullness of the paint film is realized, and the problems of gelatinization, wire drawing and incapability of forming a continuous and uniform paint film are solved.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description will be given with reference to the embodiments.
The waterborne high-fullness wood coating suitable for electrostatic spraying comprises, by weight, 20-40% of a waterborne acrylic emulsion, 20-40% of a waterborne polyurethane emulsion, 4-6% of an ether auxiliary film forming solvent, 15-20% of titanium dioxide, 0.5-1% of a defoaming agent, 1.5-2% of a dispersing agent, 2-4% of a rheological aid, 0.5-1% of a wetting and leveling agent, 2-5% of a hand feeling aid and 5-10% of water.
From the above description, the beneficial effects of the present invention are: the traditional wood coating only adopts acrylic emulsion with high glass temperature, has high hardness and high addition of film forming additives, is easy to have anti-adhesion problem, and is not environment-friendly due to high addition of the film forming additives.
Further, the aqueous acrylic emulsion is available from Wanhua chemical group, Inc
4501 an acrylic polymer emulsion; the aqueous polyurethane emulsion is
4210 aqueous polyurethane dispersion, aqueous polyurethane emulsion contains no ethoxylated Alkylphenol (APEO), N-methylpyrrolidone (NMP) and artificial tin.
Further, the film forming assisting solvent is diethylene glycol monobutyl ether and dipropylene glycol monomethyl ether, and the mass ratio of the diethylene glycol monobutyl ether to the dipropylene glycol monomethyl ether is 1: 1.
From the above description, diethylene glycol monobutyl ether and dipropylene glycol monomethyl ether are added together as a film forming aid solvent according to the mass ratio of 1:1, so that the drying speed of the system can be adjusted, and the softness and chemical resistance of a paint film are improved.
Further, the titanium dioxide is rutile titanium dioxide pigment produced by a chlorination method.
From the above description, it can be known that the addition of titanium dioxide can improve the hiding power and the decoration of the system. Compared with common titanium dioxide, the rutile type titanium dioxide pigment produced by the chlorination method can improve the physicochemical property of the coating, enhance the chemical stability, the color reducing power, the corrosion resistance, the light resistance and the weather resistance, enhance the mechanical strength and the adhesive force of the coating, prevent cracking and falling, prevent ultraviolet rays and moisture from penetrating and prolong the service life of an object.
Further, the defoaming agent is a polyether siloxane copolymer containing fumed silica.
Further, the dispersing agent is a copolymer aqueous solution containing high pigment affinity groups.
From the above description, it can be seen that the aqueous copolymer solution containing high pigment affinity groups is used in the system of the present application, which facilitates the dispersion of powder and resin, and other raw material production processes, and at the same time can help the wetting and improve the system stability.
Further, the rheological additive is one or more of associative polyether polyurethane, bentonite water solution and hectorite clay water solution.
From the above description, the selection of the rheological additive can greatly reduce the surface tension of the water-based paint, and improve the wetting ability and the leveling and spreading ability of the system.
Further, the wetting and leveling agent is an organic silicon geminal structure surfactant.
From the above description, it can be known that the surface tension of the water-based paint can be greatly reduced and the wetting ability and the leveling and spreading ability of the system can be improved by adding the organosilicon gemini surfactant as the wetting and leveling agent.
Further, the hand feeling auxiliary agent is a modified paraffin-based nonionic emulsion or a high molecular weight polydimethylsiloxane emulsion.
From the above description, it can be seen that the introduction of the hand feeling auxiliary can improve the surface smoothness, anti-blocking property and water resistance of the system.
Furthermore, the viscosity of the No. 2 cup of the waterborne high-fullness wood coating suitable for electrostatic spraying is 60s/25 ℃, and the viscosity is 25s/25 ℃ during electrostatic coating construction.
Example (b):
the compositions of examples 1-4 are shown in Table 1.
TABLE 1
Comparative example:
the compositions of comparative examples 1 to 6 are shown in Table 2.
TABLE 2
The coatings obtained in examples 1 to 4 and comparative examples 1 to 6 were applied to medium density fiberboard by the following procedure as shown in Table 3.
TABLE 3
The paint films of the medium density fiberboard after the electrostatic spraying of the paints of examples 1 to 4 and comparative examples 1 to 6 were examined, and the results are shown in Table 4.
TABLE 4
From table 4, it can be seen that the sharing of the aqueous acrylic emulsion and the aqueous polyurethane emulsion can significantly improve the fullness of the paint film, and the selection and the composition ratio of the film forming auxiliary can also affect the fullness of the paint film.
In conclusion, the waterborne high-fullness wood coating provided by the invention is suitable for coating by using an electrostatic spraying method, and the electrostatic wrapping capacity of the waterborne white finish is enhanced by adopting the waterborne acrylic emulsion and the waterborne polyurethane emulsion as main film forming materials and matching with ether film forming assisting solvents, so that the oil applying amount on the coating surface can be improved by more than 20% compared with that of a conventional product, the fullness of a paint film is greatly improved, the high fullness of the paint film is realized, the hand feeling is smooth, the defects of bottom biting, sinking and the like are avoided, the chemical resistance and the physical and mechanical properties are very good, the required standards of GB 185812020 and GB/T239992009 can be met, and the problems of gelatinization, wire drawing and incapability of forming a continuous and uniform paint film are avoided.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent modifications made by the present invention in the specification or directly or indirectly applied to the related technical field are included in the scope of the present invention.
Claims (9)
1. The water-based high-fullness wood coating suitable for electrostatic spraying is characterized by comprising, by weight, 20-40% of water-based acrylic emulsion, 20-40% of water-based polyurethane emulsion, 4-6% of film forming assisting solvent, 15-20% of titanium dioxide, 0.5-1% of defoaming agent, 1.5-2% of dispersing agent, 2-4% of rheological additive, 0.5-1% of wetting and leveling agent and 2-5% of hand feeling additive.
2. The waterborne high-fullness wood coating suitable for electrostatic spraying as claimed in claim 1, wherein the film-forming assisting solvent is diethylene glycol monobutyl ether and dipropylene glycol monomethyl ether, and the mass ratio of the diethylene glycol monobutyl ether to the dipropylene glycol monomethyl ether is 1: 1.
3. The aqueous high fullness wood coating suitable for electrostatic spraying of claim 1, wherein the titanium dioxide is a rutile titanium dioxide pigment produced by a chloride process.
4. The aqueous high fullness wood coating suitable for electrostatic spraying of claim 1, wherein said defoamer is a fumed silica containing polyether siloxane copolymer.
5. The aqueous high-fullness wood coating suitable for electrostatic spraying of claim 1, wherein the dispersant is an aqueous solution of a copolymer containing high pigment affinity groups.
6. The aqueous high fullness wood coating suitable for electrostatic spraying of claim 1, wherein the rheological aid is one or more of associative polyether polyurethane, bentonite aqueous solution, hectorite clay aqueous solution.
7. The waterborne high-fullness wood coating suitable for electrostatic spraying of claim 1, wherein the wetting and leveling agent is an organosilicon gemini surfactant.
8. The waterborne high fullness wood coating suitable for electrostatic spraying of claim 1, wherein the handle aid is a modified paraffin based non-ionic emulsion or a high molecular weight polydimethylsiloxane emulsion.
9. The waterborne high fullness wood coating suitable for electrostatic spraying of claim 1, wherein the waterborne high fullness wood coating has a cup viscosity of No. 2 of 60s/25 ℃ and a viscosity of 25s/25 ℃ in electrostatic coating construction.
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|---|---|---|---|
| CN202011037438.9A CN112143314B (en) | 2020-09-28 | 2020-09-28 | Water-based high-fullness wood coating suitable for electrostatic spraying |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011037438.9A CN112143314B (en) | 2020-09-28 | 2020-09-28 | Water-based high-fullness wood coating suitable for electrostatic spraying |
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| CN112143314B CN112143314B (en) | 2022-06-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112795259A (en) * | 2021-01-14 | 2021-05-14 | 中华制漆(新丰）有限公司 | Water-based electrostatic finish paint and preparation method thereof |
| CN115491115A (en) * | 2022-10-13 | 2022-12-20 | 上海展辰涂料有限公司 | Water-based bi-component graphene solid-color paint for electrostatic coating |
| CN115960499A (en) * | 2022-10-12 | 2023-04-14 | 上海君子兰新材料股份有限公司 | Preparation and application of water-based two-component high-adhesion solid-color coating |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112795259A (en) * | 2021-01-14 | 2021-05-14 | 中华制漆(新丰）有限公司 | Water-based electrostatic finish paint and preparation method thereof |
| CN115960499A (en) * | 2022-10-12 | 2023-04-14 | 上海君子兰新材料股份有限公司 | Preparation and application of water-based two-component high-adhesion solid-color coating |
| CN115960499B (en) * | 2022-10-12 | 2024-01-30 | 上海君子兰新材料股份有限公司 | Preparation and application of aqueous two-component high-adhesion solid-color coating |
| CN115491115A (en) * | 2022-10-13 | 2022-12-20 | 上海展辰涂料有限公司 | Water-based bi-component graphene solid-color paint for electrostatic coating |
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| Publication number | Publication date |
|---|---|
| CN112143314B (en) | 2022-06-07 |
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Effective date of registration: 20240715 Address after: 457000 intersection of Dingsheng road and Tianrong street, Puyang Industrial Park, Henan Province Patentee after: Puyang zhanchen New Material Co.,Ltd. Country or region after: China Address before: No.2, No.2, No.2, Fuzhou new free trade zone Patentee before: FUZHOU ZHANCHEN NEW MATERIAL Co.,Ltd. Country or region before: China |