CN110885600A - High-stain-resistance water-based finish paint, and preparation method, application and woodware thereof - Google Patents
High-stain-resistance water-based finish paint, and preparation method, application and woodware thereof Download PDFInfo
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- CN110885600A CN110885600A CN201911226454.XA CN201911226454A CN110885600A CN 110885600 A CN110885600 A CN 110885600A CN 201911226454 A CN201911226454 A CN 201911226454A CN 110885600 A CN110885600 A CN 110885600A
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- 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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- 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
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
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- 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
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
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- 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
- C09D7/20—Diluents or solvents
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- 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
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- 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
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Abstract
The invention discloses a high stain-resistant water-based finish paint, and a preparation method, application and woodware thereof, and belongs to the technical field of coatings. The water-based finish paint comprises the following components in parts by weight: the coating comprises a water-based emulsion, water-based resin, a defoaming agent, a wetting agent, white slurry, wax powder, a film-forming assistant, a defoaming agent, a flatting agent, a rheological assistant and water; the white pulp comprises the following components in parts by weight: water, a dispersing agent, a defoaming agent, titanium dioxide, a water-based rheological additive and a pH regulator. The water-based finish paint provided by the invention adopts water as a solvent, has extremely low VOC (volatile organic compounds) emission in a system, basically has no pungent smell, is nonflammable, safe and stable, and has good environmental protection performance and good stain resistance. The water-based resin and the water-based emulsion are mixed, so that the crosslinking density of the paint is further improved, and the addition of the auxiliary agent with certain hydrophobicity is beneficial to improving the stain resistance and the water resistance of a paint film and further enhancing the hardness and the adhesive force of the paint film.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a high-stain-resistance water-based finish paint, and a preparation method, application and woodware thereof.
Background
With the change of times and the continuous development of economy, people pay more and more attention to the problems of environmental protection and health. Although the traditional solvent-based paint has better performance, because a large amount of organic solvents are adopted, the solvents are volatilized into the air, so that strong pungent smell is generated, meanwhile, the traditional solvent-based paint threatens human health, and the concept of sustainable development and environmental protection is violated. Water-based coatings using water as a dispersion medium have been paid attention to by people, and are ideal products for replacing traditional solvent-based coatings and are in a vigorous development stage. Compared with the traditional paint, the water-based paint takes water as a dispersing agent, so that the volatilization of harmful gases is greatly reduced, and the water-based paint has the characteristics of environmental protection, no toxicity, no heavy metal, no flammability, good stability and the like.
However, the water-based wood white paint has some defects, for example, the water-based wood white paint on the market at present has the problem that the surface is easy to be polluted, and the pollutants can erode the paint film and discolor the paint film and generate some surface defects at the same time, so that the appearance of the paint film is influenced, and the application of the water-based wood white paint is restricted.
Disclosure of Invention
An object of an embodiment of the present invention is to provide a high stain-resistant water-based finish paint to solve the problems in the background art.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
the high stain-resistant water-based finish paint comprises the following components in parts by weight: 20-60 parts of water-based emulsion, 10-35 parts of water-based resin, 0.3-0.7 part of defoaming agent, 0.1-0.5 part of wetting agent, 15-30 parts of white slurry, 1-5 parts of wax powder, 3-7 parts of film-forming assistant, 0.1-0.5 part of defoaming agent, 0.1-0.5 part of flatting agent, 0.1-0.5 part of rheological assistant and 3-8 parts of water; the white pulp comprises the following components in parts by weight: 10-30 parts of water, 3-7 parts of dispersing agent, 0.2-0.6 part of defoaming agent, 60-90 parts of titanium dioxide, 0.1-0.5 part of aqueous rheological additive and 0.1-0.5 part of pH regulator.
As a preferable scheme of the embodiment of the invention, the water-based finish paint comprises the following components in parts by weight: 30-50 parts of water-based emulsion, 13-33 parts of water-based resin, 0.4-0.6 part of defoaming agent, 0.2-0.4 part of wetting agent, 20-25 parts of white slurry, 1-3 parts of wax powder, 4-6 parts of film-forming assistant, 0.2-0.4 part of defoaming agent, 0.1-0.3 part of flatting agent, 0.2-0.4 part of rheological assistant and 4.5-6.5 parts of water.
As another preferable scheme of the embodiment of the invention, the white pulp comprises the following components in parts by weight: 15-25 parts of water, 4-6 parts of dispersing agent, 0.3-0.5 part of defoaming agent, 70-80 parts of titanium dioxide, 0.1-0.3 part of aqueous rheological additive and 0.1-0.3 part of pH regulator.
As another preferable aspect of the embodiment of the present invention, the aqueous emulsion is an acrylic emulsion; the water-based resin is acrylic resin.
As another preferable aspect of the embodiment of the present invention, the defoaming agent is a silicone defoaming agent; the wetting agent is an organosilicon surfactant; the defoaming agent is polyether siloxane copolymer; the leveling agent is an organic silicon leveling agent; the rheological additive is an associative thickener; the film-forming assistant is dipropylene glycol methyl ether and/or dipropylene glycol butyl ether.
As another preferred scheme of the embodiment of the present invention, the titanium dioxide is rutile titanium dioxide; the aqueous rheological additive is polyether polyurethane associative rheological additive; the pH regulator is 2-amino-2-methyl-1-propanol.
Another object of an embodiment of the present invention is to provide a preparation method of the above high stain-resistant water-based finish paint, which includes the following steps:
weighing water, a dispersing agent, a defoaming agent, titanium dioxide, a water-based rheological additive and a pH regulator according to the weight parts for later use;
stirring and dispersing the water, the dispersing agent and the defoaming agent to obtain a first dispersion liquid;
slowly adding titanium dioxide into the first dispersion liquid for dispersion, and then adding an aqueous rheological additive and a pH regulator for dispersion to obtain white slurry for later use;
weighing the water-based emulsion, the water-based resin, the defoaming agent, the wetting agent, the white slurry, the wax powder, the film-forming assistant, the defoaming agent, the leveling agent, the rheological assistant and the water according to the weight parts for later use;
stirring and dispersing the water-based emulsion, the water-based resin, the defoaming agent and the wetting agent to obtain a second dispersion liquid;
and adding the white slurry and the wax powder into the second dispersion liquid for dispersion, and then sequentially adding a film-forming aid, water, a defoaming agent, a leveling agent and a rheological aid for dispersion and filtration to obtain the water-based finish paint.
The embodiment of the invention also aims to provide the water-based finish paint prepared by the preparation method.
The embodiment of the invention also aims to provide an application of the water-based finish paint in woodware surface processing.
Another object of an embodiment of the present invention is to provide a wooden article, wherein the surface of the wooden article is partially or completely coated with the above water-based finish paint.
Compared with the prior art, the embodiment of the invention has the beneficial effects that:
(1) the high-stain-resistance water-based finish paint provided by the embodiment of the invention adopts water as a solvent, has extremely low discharge of Volatile Organic Compounds (VOC) in a system, basically has no pungent smell, is non-flammable, safe and stable, and has good environmental protection performance and good stain resistance.
(2) According to the embodiment of the invention, two different water-based resins and water-based emulsions are mixed, so that the crosslinking density of the coating is further improved, and the addition of the auxiliary agent with certain hydrophobicity is beneficial to improving the stain resistance and water resistance of a paint film and further enhancing the hardness and adhesive force of the paint film.
(3) The preparation method provided by the embodiment of the invention is simple and feasible, the required equipment is simple, the operation can be carried out under the normal temperature and normal pressure environment, the safety and the high efficiency are realized, and the industrial production requirements are met.
(4) The water-based finish paint provided by the embodiment of the invention is a single component, can be used only by adding a proper amount of water to mix and adjust a proper viscosity during construction, does not need an organic solvent for cleaning tool instruments, and is convenient to use and environment-friendly.
(5) The wetting agent adopted by the embodiment of the invention is an organic silicon surfactant, so that the surface tension can be reduced strongly, good substrate wetting can be provided, and the surface smoothness is not influenced.
(6) The defoaming agent adopted by the embodiment of the invention is polyether siloxane copolymer emulsion, is suitable for an aqueous formula, can prevent the generation of micro bubbles and macro bubbles, and has high defoaming efficiency and good compatibility.
(7) The leveling agent adopted in the embodiment of the invention is an organic silicon leveling agent, can strongly reduce the surface tension, and has the excellent functions of wetting a substrate, preventing shrinkage cavity and increasing the surface smoothness.
(8) The rheological additives adopted in the embodiment of the invention are associative thickeners, can be used in a wide pH range, and have the characteristics of high sagging resistance, strong controllability, good fluidity, leveling property, glossiness, splashing resistance and the like.
(9) The dispersing agent adopted by the embodiment of the invention enables the titanium dioxide to be deflocculated through the electrostatic stabilization effect, can improve the gloss of a paint film and reduce the viscosity, and simultaneously has the functions of hydrophobicity and improving the stain resistance and corrosion resistance of the paint.
(10) The aqueous rheological additive adopted in the embodiment of the invention is a polyether polyurethane associative rheological additive, can provide high-efficiency thickening property in a medium-low shear rate range, has strong shear thinning characteristic, and is very suitable for systems such as spraying type emulsion, dispersion, water-thin type transparent coating, high-gloss colored paint and the like.
(11) The pH regulator adopted in the embodiment of the invention is 2-amino-2-methyl-1-propanol, has the functions of dispersing, thickening, regulating pH value and the like, also has the antimicrobial (bactericidal) characteristic, can reduce the total amount of VOC (volatile organic compounds), is beneficial to improving the environmental protection performance of the coating, and can prevent titanium dioxide from re-agglomerating when being used as a strong co-dispersing agent in the coating.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment provides a high stain-resistant water-based finish paint, and the preparation method of the water-based finish paint comprises the following steps:
(1) weighing 100g of water, 30g of dispersing agent, 2-6 g of defoaming agent, 900g of titanium dioxide, 1g of aqueous rheological additive and 1g of pH regulator for later use. Wherein the dispersant is a copolymer solution containing pigment affinity groups, and specifically, the dispersant can be a commercial Bick BYK-2081; the defoaming agent is an organic silicon defoaming agent, and specifically, the commercially available Pick BYK-024 can be selected; the titanium dioxide is general rutile titanium dioxide prepared by a chlorination method, and can be specifically selected from commercially available DuPont R-706; the aqueous rheological additive is polyether polyurethane associative rheological additive with 25% of active component, and can specifically select commercially available Hamming Rheolate 299; the pH regulator is 2-amino-2-methyl-1-propanol containing 5% water, and is commercially available Angus AMP 95.
(2) And selecting a proper dispersion tank, putting the water, the dispersing agent and the defoaming agent into the dispersion tank, starting a dispersion stirrer, adjusting the rotating speed of the dispersion stirrer to 1000r/min, and stirring and dispersing for 2min to obtain a first dispersion liquid.
(3) Slowly adding titanium dioxide into the first dispersion liquid, adjusting the rotation speed to 2000r/min, dispersing for 20min, detecting the fineness of the dispersion liquid added with the titanium dioxide, and when the fineness is less than or equal to 10 mu m, adding the aqueous rheological additive and the pH regulator, and dispersing for 5min to obtain white slurry for later use.
(4) Weighing 200g of water-based emulsion, 350g of water-based resin, 3g of defoaming agent, 1g of wetting agent, 300g of white slurry, 10g of wax powder, 30g of film-forming aid, 1g of defoaming agent, 1g of flatting agent, 1g of rheological aid and 30g of water for later use; wherein the aqueous emulsion is a commercially available Dow chemical ROSHIELD 530 aqueous acrylic polymer emulsion; the water-based resin is a water-based epoxy acrylic resin (with the molecular weight of 10000) sold in the market; the antifoaming agent is a commercial ByK-024 silicone antifoaming agent and a commercial set AD 01; the wetting agent is a commercial ByK-349 organic silicon surfactant; the wax powder is sold as a commercial sand rope W-605G; the film-forming auxiliary agent is dipropylene glycol methyl ether and dipropylene glycol butyl ether; the defoaming agent is a commercial Digao Tego902W polyether siloxane copolymer emulsion; the flatting agent is a Pick BYK-333 organic silicon flatting agent sold in the market; the rheological aid is a commercially available German Ming Rabbit TAFIGE associative thickener.
(5) Selecting a proper dispersion tank, putting the aqueous emulsion and the aqueous resin into the dispersion tank, starting a dispersion stirrer, adjusting the rotating speed of the dispersion stirrer to 1500r/min, and then adding a defoaming agent and a wetting agent to stir and disperse for 5min to obtain a second dispersion liquid. In this case, the second dispersion was applied to a glass plate, and the presence or absence of cratering and oil pits was observed.
(6) And adding the white slurry and the wax powder into the second dispersion liquid, continuing to disperse for 5min, detecting the fineness of the dispersion liquid added with the white slurry, when the fineness is less than or equal to 10 mu m, sequentially adding a film-forming aid, water, a defoaming agent, a leveling agent and a rheological aid, dispersing for 5min, and then sieving and filtering the dispersion liquid to obtain the water-based finish paint.
Example 2
The embodiment provides a high stain-resistant water-based finish paint, and the preparation method of the water-based finish paint comprises the following steps:
(1) weighing 300g of water, 70g of dispersing agent, 6g of defoaming agent, 600g of titanium dioxide, 5g of aqueous rheological additive and 5g of pH regulator for later use. Wherein the dispersant is the commercial Bick BYK-2081; the defoaming agent is an organic silicon defoaming agent, and specifically, the commercially available Pick BYK-024 can be selected; the titanium dioxide is general rutile titanium dioxide prepared by a chlorination method, and can be specifically selected from commercially available DuPont R-706; the aqueous rheological additive is polyether polyurethane associative rheological additive with 25% of active component, and can specifically select commercially available Hamming Rheolate 299; the pH regulator is 2-amino-2-methyl-1-propanol containing 5% water, and is commercially available Angus AMP 95.
(2) And selecting a proper dispersion tank, putting the water, the dispersing agent and the defoaming agent into the dispersion tank, starting a dispersion stirrer, adjusting the rotating speed of the dispersion stirrer to 1000r/min, and stirring and dispersing for 5min to obtain a first dispersion liquid.
(3) Slowly adding titanium dioxide into the first dispersion liquid, adjusting the rotation speed to 2000r/min, dispersing for 30min, detecting the fineness of the dispersion liquid added with the titanium dioxide, and adding the aqueous rheological additive and the pH regulator to disperse for 10min when the fineness is less than or equal to 10 mu m to obtain white slurry for later use.
(4) Weighing 600g of water-based emulsion, 100g of water-based resin, 7g of defoaming agent, 5g of wetting agent, 150g of white slurry, 50g of wax powder, 70g of film-forming aid, 5g of defoaming agent, 5g of flatting agent, 5g of rheological aid and 80g of water for later use; wherein the water-based emulsion is a commercial solid Uacryl 4005G acrylic emulsion; the water-based resin is a commercially available water-based epoxy acrylic resin (molecular weight is 10000); the antifoaming agent is commercial coupled AD 01; the wetting agent is a commercial ByK-349 organic silicon surfactant; the wax powder is sold as a commercial sand rope W-605G; the film-forming assistant is dipropylene glycol methyl ether; the defoaming agent is a commercial Digao Tego902W polyether siloxane copolymer emulsion; the flatting agent is a Pick BYK-333 organic silicon flatting agent sold in the market; the rheological aid is a commercially available German Ming-Ling PUR44 associative thickener.
(5) Selecting a proper dispersion tank, putting the aqueous emulsion and the aqueous resin into the dispersion tank, starting a dispersion stirrer, adjusting the rotating speed of the dispersion stirrer to 1500r/min, and then adding a defoaming agent and a wetting agent to stir and disperse for 10min to obtain a second dispersion liquid. In this case, the second dispersion was applied to a glass plate, and the presence or absence of cratering and oil pits was observed.
(6) And adding the white slurry and the wax powder into the second dispersion liquid, continuing to disperse for 10min, detecting the fineness of the dispersion liquid added with the white slurry, when the fineness is less than or equal to 10 mu m, sequentially adding a film-forming aid, water, a defoaming agent, a leveling agent and a rheological aid, dispersing for 10min, and then sieving and filtering the dispersion liquid to obtain the water-based finish paint.
Example 3
The embodiment provides a high stain-resistant water-based finish paint, and the preparation method of the water-based finish paint comprises the following steps:
(1) weighing 250g of water, 40g of dispersing agent, 5g of defoaming agent, 700g of titanium dioxide, 3g of aqueous rheological additive and 2g of pH regulator for later use. Wherein the dispersant is the commercial Bick BYK-2081; the defoaming agent is an organic silicon defoaming agent, and specifically, the commercially available Pick BYK-024 can be selected; the titanium dioxide is general rutile titanium dioxide prepared by a chlorination method, and can be specifically selected from commercially available DuPont R-706; the aqueous rheological additive is polyether polyurethane associative rheological additive with 25% of active component, and can specifically select commercially available Hamming Rheolate 299; the pH regulator is 2-amino-2-methyl-1-propanol containing 5% water, and is commercially available Angus AMP 95.
(2) And selecting a proper dispersion tank, putting the water, the dispersing agent and the defoaming agent into the dispersion tank, starting a dispersion stirrer, adjusting the rotating speed of the dispersion stirrer to 1000r/min, and stirring and dispersing for 4min to obtain a first dispersion liquid.
(3) Slowly adding titanium dioxide into the first dispersion liquid, adjusting the rotation speed to 2000r/min, dispersing for 25min, detecting the fineness of the dispersion liquid added with the titanium dioxide, and adding the aqueous rheological additive and the pH regulator to disperse for 8min when the fineness is less than or equal to 10 mu m to obtain white slurry for later use.
(4) Weighing 300g of water-based emulsion, 330g of water-based resin, 4g of defoaming agent, 2g of wetting agent, 250g of white slurry, 10g of wax powder, 40g of film-forming aid, 4g of defoaming agent, 3g of flatting agent, 2g of rheological aid and 45g of water for later use; wherein the water-based emulsion is a commercially available water-based organic silicon modified acrylic polymer emulsion (molecular weight is 10000); waterborne epoxy acrylic resin (molecular weight is 10000); the defoaming agent is a commercial Pick BYK-024 organic silicon defoaming agent; the wetting agent is a commercial ByK-349 organic silicon surfactant; the wax powder is sold as a commercial sand rope W-605G; the film-forming assistant is dipropylene glycol butyl ether; the defoaming agent is a commercial Digao Tego902W polyether siloxane copolymer emulsion; the flatting agent is a Pick BYK-333 organic silicon flatting agent sold in the market; the rheological aid is a commercial TEGO3010 associative thickener.
(5) And selecting a proper dispersion tank, putting the aqueous emulsion and the aqueous resin into the dispersion tank, starting a dispersion stirrer, adjusting the rotating speed of the dispersion stirrer to 1500r/min, and then adding a defoaming agent and a wetting agent to stir and disperse for 8min to obtain a second dispersion liquid. In this case, the second dispersion was applied to a glass plate, and the presence or absence of cratering and oil pits was observed.
(6) And adding the white slurry and the wax powder into the second dispersion liquid, continuing to disperse for 8min, detecting the fineness of the dispersion liquid added with the white slurry, when the fineness is less than or equal to 10 mu m, sequentially adding a film-forming aid, water, a defoaming agent, a leveling agent and a rheological aid, dispersing for 8min, and then sieving and filtering the dispersion liquid to obtain the water-based finish paint.
Example 4
The embodiment provides a high stain-resistant water-based finish paint, and the preparation method of the water-based finish paint comprises the following steps:
(1) weighing 195g of water, 50g of dispersing agent, 3g of defoaming agent, 750g of titanium dioxide, 1g of aqueous rheological additive and 1g of pH regulator for later use. Wherein the dispersant is the commercial Bick BYK-2081; the defoaming agent is an organic silicon defoaming agent, and specifically, the commercially available Pick BYK-024 can be selected; the titanium dioxide is general rutile titanium dioxide prepared by a chlorination method, and can be specifically selected from commercially available DuPont R-706; the aqueous rheological additive is polyether polyurethane associative rheological additive with 25% of active component, and can specifically select commercially available Hamming Rheolate 299; the pH regulator is 2-amino-2-methyl-1-propanol containing 5% water, and is commercially available Angus AMP 95.
(2) And selecting a proper dispersion tank, putting the water, the dispersing agent and the defoaming agent into the dispersion tank, starting a dispersion stirrer, adjusting the rotating speed of the dispersion stirrer to 1000r/min, and stirring and dispersing for 4min to obtain a first dispersion liquid.
(3) Slowly adding titanium dioxide into the first dispersion liquid, adjusting the rotation speed to 2000r/min, dispersing for 25min, detecting the fineness of the dispersion liquid added with the titanium dioxide, and adding the aqueous rheological additive and the pH regulator to disperse for 8min when the fineness is less than or equal to 10 mu m to obtain white slurry for later use.
(4) Weighing 400g of water-based emulsion, 230g of water-based resin, 6g of defoaming agent, 3g of wetting agent, 230g of white slurry, 20g of wax powder, 50g of film-forming aid, 2g of defoaming agent, 2g of flatting agent, 3g of rheological aid and 54g of water for later use; wherein the aqueous emulsion is a commercially available Dow chemical ROSHIELD 530 aqueous acrylic polymer emulsion; the water-based resin is a commercially available water-based epoxy acrylic resin (molecular weight is 10000); the defoaming agent is a commercial Pick BYK-024 organic silicon defoaming agent; the wetting agent is a commercial ByK-349 organic silicon surfactant; the wax powder is sold as a commercial sand rope W-605G; the film-forming assistant is dipropylene glycol butyl ether; the defoaming agent is a commercial Digao Tego902W polyether siloxane copolymer emulsion; the flatting agent is a Pick BYK-333 organic silicon flatting agent sold in the market; the rheological aid is a commercial TEGO3010 associative thickener.
(5) And selecting a proper dispersion tank, putting the aqueous emulsion and the aqueous resin into the dispersion tank, starting a dispersion stirrer, adjusting the rotating speed of the dispersion stirrer to 1500r/min, and then adding a defoaming agent and a wetting agent to stir and disperse for 8min to obtain a second dispersion liquid. In this case, the second dispersion was applied to a glass plate, and the presence or absence of cratering and oil pits was observed.
(6) And adding the white slurry and the wax powder into the second dispersion liquid, continuing to disperse for 8min, detecting the fineness of the dispersion liquid added with the white slurry, when the fineness is less than or equal to 10 mu m, sequentially adding a film-forming aid, water, a defoaming agent, a leveling agent and a rheological aid, dispersing for 8min, and then sieving and filtering the dispersion liquid to obtain the water-based finish paint.
Example 5
The embodiment provides a high stain-resistant water-based finish paint, and the preparation method of the water-based finish paint comprises the following steps:
(1) weighing 150g of water, 60g of dispersing agent, 4g of defoaming agent, 800g of titanium dioxide, 2g of aqueous rheological additive and 3g of pH regulator for later use. Wherein the dispersant is the commercial Bick BYK-2081; the defoaming agent is an organic silicon defoaming agent, and specifically, the commercially available Pick BYK-024 can be selected; the titanium dioxide is general rutile titanium dioxide prepared by a chlorination method, and can be specifically selected from commercially available DuPont R-706; the aqueous rheological additive is polyether polyurethane associative rheological additive with 25% of active component, and can specifically select commercially available Hamming Rheolate 299; the pH regulator is 2-amino-2-methyl-1-propanol containing 5% water, and is commercially available Angus AMP 95.
(2) And selecting a proper dispersion tank, putting the water, the dispersing agent and the defoaming agent into the dispersion tank, starting a dispersion stirrer, adjusting the rotating speed of the dispersion stirrer to 1000r/min, and stirring and dispersing for 4min to obtain a first dispersion liquid.
(3) Slowly adding titanium dioxide into the first dispersion liquid, adjusting the rotation speed to 2000r/min, dispersing for 25min, detecting the fineness of the dispersion liquid added with the titanium dioxide, and adding the aqueous rheological additive and the pH regulator to disperse for 8min when the fineness is less than or equal to 10 mu m to obtain white slurry for later use.
(4) Weighing 500g of water-based emulsion, 130g of water-based resin, 5g of defoaming agent, 4g of wetting agent, 200g of white slurry, 30g of wax powder, 60g of film-forming aid, 3g of defoaming agent, 1g of flatting agent, 4g of rheological aid and 65g of water for later use; wherein, the waterborne organic silicon modified acrylic polymer emulsion (molecular weight is 10000); waterborne epoxy acrylic resin (molecular weight is 10000); the defoaming agent is a commercial Pick BYK-024 organic silicon defoaming agent; the wetting agent is a commercial ByK-349 organic silicon surfactant; the wax powder is sold as a commercial sand rope W-605G; the film-forming assistant is dipropylene glycol butyl ether; the defoaming agent is a commercial Digao Tego902W polyether siloxane copolymer emulsion; the flatting agent is a Pick BYK-333 organic silicon flatting agent sold in the market; the rheological aid is a commercial TEGO3010 associative thickener.
(5) And selecting a proper dispersion tank, putting the aqueous emulsion and the aqueous resin into the dispersion tank, starting a dispersion stirrer, adjusting the rotating speed of the dispersion stirrer to 1500r/min, and then adding a defoaming agent and a wetting agent to stir and disperse for 8min to obtain a second dispersion liquid. In this case, the second dispersion was applied to a glass plate, and the presence or absence of cratering and oil pits was observed.
(6) And adding the white slurry and the wax powder into the second dispersion liquid, continuing to disperse for 8min, detecting the fineness of the dispersion liquid added with the white slurry, when the fineness is less than or equal to 10 mu m, sequentially adding a film-forming aid, water, a defoaming agent, a leveling agent and a rheological aid, dispersing for 8min, and then sieving and filtering the dispersion liquid to obtain the water-based finish paint.
Comparative example 1
This comparative example provides a water-based topcoat of a brand currently commercially available.
Comparative example 2
In the comparative example, the rheological additive component is removed on the basis of example 3, and the specific operation is as follows:
(1) weighing 250g of water, 40g of dispersing agent, 5g of defoaming agent, 700g of titanium dioxide and 2g of pH regulator for later use. Wherein the dispersant is the commercial Bick BYK-2081; the defoaming agent is an organic silicon defoaming agent, and specifically, the commercially available Pick BYK-024 can be selected; the titanium dioxide is general rutile titanium dioxide prepared by a chlorination method, and can be specifically selected from commercially available DuPont R-706; the pH regulator is 2-amino-2-methyl-1-propanol containing 5% water, and is commercially available Angus ANGS A MP 95.
(2) And selecting a proper dispersion tank, putting the water, the dispersing agent and the defoaming agent into the dispersion tank, starting a dispersion stirrer, adjusting the rotating speed of the dispersion stirrer to 1000r/min, and stirring and dispersing for 4min to obtain a first dispersion liquid.
(3) Slowly adding titanium dioxide into the first dispersion liquid, adjusting the rotation speed to 2000r/min, dispersing for 25min, detecting the fineness of the dispersion liquid added with the titanium dioxide, and adding the aqueous rheological additive and the pH regulator to disperse for 8min when the fineness is less than or equal to 10 mu m to obtain white slurry for later use.
(4) Weighing 300g of water-based emulsion, 330g of water-based resin, 4g of defoaming agent, 2g of wetting agent, 250g of white slurry, 10g of wax powder, 40g of film-forming aid, 4g of defoaming agent, 3g of flatting agent, 2g of rheological aid and 45g of water for later use; wherein, the waterborne organic silicon modified acrylic polymer emulsion (molecular weight is 10000); waterborne epoxy acrylic resin (molecular weight is 10000); the defoaming agent is a commercial Pick BYK-024 organic silicon defoaming agent; the wetting agent is a commercial ByK-349 organic silicon surfactant; the wax powder is sold as a commercial sand rope W-605G; the film-forming assistant is dipropylene glycol butyl ether; the defoaming agent is a commercial Digao Tego902W polyether siloxane copolymer emulsion; the flatting agent is a Pick BYK-333 organic silicon flatting agent sold in the market;
(5) and selecting a proper dispersion tank, putting the aqueous emulsion and the aqueous resin into the dispersion tank, starting a dispersion stirrer, adjusting the rotating speed of the dispersion stirrer to 1500r/min, and then adding a defoaming agent and a wetting agent to stir and disperse for 8min to obtain a second dispersion liquid. In this case, the second dispersion was applied to a glass plate, and the presence or absence of cratering and oil pits was observed.
(6) And adding the white slurry and the wax powder into the second dispersion liquid, continuing to disperse for 8min, detecting the fineness of the dispersion liquid added with the white slurry, when the fineness is less than or equal to 10 mu m, sequentially adding a film-forming aid, water, a defoaming agent and a flatting agent, dispersing for 8min, and then sieving the dispersion liquid by a sieve, and filtering to obtain the water-based finish paint.
Comparative example 3
The comparative example changes the paint preparation process on the basis of the above example, and the specific operation is as follows:
(1) weighing 300g of water-based emulsion, 330g of water-based resin, 4g of defoaming agent, 2g of wetting agent, 175g of titanium dioxide, 10g of wax powder, 40g of film-forming aid, 4g of defoaming agent, 3g of flatting agent, 2g of rheological aid and 45g of water for later use; wherein the aqueous emulsion is a commercially available Dow chemical ROSHIELD 530 aqueous acrylic polymer emulsion; aqueous resin aqueous organic silicon modified acrylic polymer emulsion (molecular weight is 10000); waterborne epoxy acrylic resin (molecular weight is 10000); the wetting agent is a commercial ByK-349 organic silicon surfactant; the titanium dioxide is general rutile titanium dioxide prepared by a chlorination method, in particular to a commercially available DuPont R-706; the wax powder is sold as a commercial sand rope W-605G; the film-forming assistant is dipropylene glycol butyl ether; the defoaming agent is a commercial Digao Tego902W polyether siloxane copolymer emulsion; the flatting agent is a Pick BYK-333 organic silicon flatting agent sold in the market; the rheological aid is a commercial TEGO3010 associative thickener.
(2) And selecting a proper dispersion tank, putting the aqueous emulsion and the aqueous resin into the dispersion tank, starting a dispersion stirrer, adjusting the rotating speed of the dispersion stirrer to 1500r/min, and then adding a defoaming agent and a wetting agent to stir and disperse for 8min to obtain a second dispersion liquid. In this case, the second dispersion was applied to a glass plate, and the presence or absence of cratering and oil pits was observed.
(3) And adding the titanium dioxide and the wax powder into the second dispersion liquid, continuing to disperse for 50min, detecting the fineness of the dispersion liquid added with the white slurry, when the fineness is less than or equal to 10 mu m, sequentially adding a film-forming aid, water, a defoaming agent, a leveling agent and a rheological aid, dispersing for 8min, and then sieving and filtering the dispersion liquid to obtain the water-based finish paint.
The water-based finishing paints provided in the above examples 3-5 and comparative examples 1-3 were respectively dried after board making (wherein, the board making process is to spray the water-based finishing paint on the medium density fiberboard UV white mixed primer with the coating weight of about 120g/m2(ii) a The drying conditions were: air drying for one day and then drying for two days at 50 ℃), and performing paint film performance detection under the same conditions according to the standard of class C in the standard GB/T23999-2009 and the standard GB4893.1-1985 (detergent resistance test), wherein the detection results are shown in the following table 1.
TABLE 1
As is apparent from the detection data in Table 1 above, the paint film sprayed with the water-based finish paint provided by the embodiment of the invention has strong resistance to green tea, detergent, black vinegar and other pollutants, and can reach the qualified grade or above. In addition, a paint film obtained by spraying the water-based finish paint provided by the embodiment of the invention has stronger resistance to normal-temperature water, alkaline liquid and alcohol, and can reach a qualified grade; meanwhile, the hardness of a paint film obtained by spraying the water-based finish paint provided by the embodiment of the invention can reach B level or above, and the adhesive force can reach 0 level. The performances of the paint films of the examples 3 to 5 are better than those of a certain commercial comparative product, and the performances of the paint films of the comparative examples 2 and 3 are similar to those of the paint films of the examples in terms of stain resistance, but the paint films have some defects in different aspects, such as: in the comparative example 2, no rheological additive is added, so that the pigment sedimentation phenomenon easily occurs in the paint sample in the storage process, and in addition, the paint film thickness is not favorably controlled in the spraying process, and meanwhile, the sagging phenomenon occurs, so that the paint film effect is influenced; in the comparative example 3, the titanium dioxide is directly added into the emulsion and the resin by skipping the pre-dispersion step, so that the dispersion difficulty of the solid pigment is increased, the subsequent pigment is easy to generate the re-flocculation phenomenon, and meanwhile, the hand feeling and smoothness of a paint film are reduced, the color development performance is weakened, and flooding and blooming are possibly caused.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. The high stain-resistant water-based finish paint is characterized by comprising the following components in parts by weight: 20-60 parts of water-based emulsion, 10-35 parts of water-based resin, 0.3-0.7 part of defoaming agent, 0.1-0.5 part of wetting agent, 15-30 parts of white slurry, 1-5 parts of wax powder, 3-7 parts of film-forming assistant, 0.1-0.5 part of defoaming agent, 0.1-0.5 part of flatting agent, 0.1-0.5 part of rheological assistant and 3-8 parts of water; the white pulp comprises the following components in parts by weight: 10-30 parts of water, 3-7 parts of dispersing agent, 0.2-0.6 part of defoaming agent, 60-90 parts of titanium dioxide, 0.1-0.5 part of aqueous rheological additive and 0.1-0.5 part of pH regulator.
2. The high stain resistance water-based finish paint as claimed in claim 1, wherein the water-based finish paint comprises the following components in parts by weight: 30-50 parts of water-based emulsion, 13-33 parts of water-based resin, 0.4-0.6 part of defoaming agent, 0.2-0.4 part of wetting agent, 20-25 parts of white slurry, 1-3 parts of wax powder, 4-6 parts of film-forming assistant, 0.2-0.4 part of defoaming agent, 0.1-0.3 part of flatting agent, 0.2-0.4 part of rheological assistant and 4.5-6.5 parts of water.
3. The high stain resistance water-based finish paint according to claim 1 or 2, wherein the white pulp comprises the following components in parts by weight: 15-25 parts of water, 4-6 parts of dispersing agent, 0.3-0.5 part of defoaming agent, 70-80 parts of titanium dioxide, 0.1-0.3 part of aqueous rheological additive and 0.1-0.3 part of pH regulator.
4. The high stain resistance water-based finish paint according to claim 1 or 2, wherein the water-based emulsion is an acrylic emulsion; the water-based resin is acrylic resin.
5. The high stain resistance water-based finish paint according to claim 1 or 2, wherein the defoamer is a silicone defoamer; the wetting agent is an organosilicon surfactant; the defoaming agent is polyether siloxane copolymer; the leveling agent is an organic silicon leveling agent; the rheological additive is an associative thickener; the film-forming assistant is dipropylene glycol methyl ether and/or dipropylene glycol butyl ether.
6. The high stain resistance water-based finish paint according to claim 1, wherein the titanium dioxide is rutile titanium dioxide; the aqueous rheological additive is polyether polyurethane associative rheological additive; the pH regulator is 2-amino-2-methyl-1-propanol.
7. A preparation method of the high stain resistance water-based finish paint as claimed in any one of claims 1 to 6, characterized by comprising the following steps:
weighing water, a dispersing agent, a defoaming agent, titanium dioxide, a water-based rheological additive and a pH regulator according to the weight parts for later use;
stirring and dispersing the water, the dispersing agent and the defoaming agent to obtain a first dispersion liquid;
slowly adding titanium dioxide into the first dispersion liquid for dispersion, and then adding an aqueous rheological additive and a pH regulator for dispersion to obtain white slurry for later use;
weighing the water-based emulsion, the water-based resin, the defoaming agent, the wetting agent, the white slurry, the wax powder, the film-forming assistant, the defoaming agent, the leveling agent, the rheological assistant and the water according to the weight parts for later use;
stirring and dispersing the water-based emulsion, the water-based resin, the defoaming agent and the wetting agent to obtain a second dispersion liquid;
and adding the white slurry and the wax powder into the second dispersion liquid for dispersion, and then sequentially adding a film-forming aid, water, a defoaming agent, a leveling agent and a rheological aid for dispersion and filtration to obtain the water-based finish paint.
8. An aqueous topcoat prepared by the method of claim 7.
9. Use of the water-based finish paint of any one of claims 1-6 and 8 in wood surface processing.
10. A wooden article characterized in that the surface of the wooden article is partially or entirely coated with the water-based finish paint according to any one of claims 1 to 6 and 8.
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| CN111793423A (en) * | 2020-07-24 | 2020-10-20 | 珠海展辰新材料股份有限公司 | Water-based solid-color wood finish paint and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111793423A (en) * | 2020-07-24 | 2020-10-20 | 珠海展辰新材料股份有限公司 | Water-based solid-color wood finish paint and preparation method thereof |
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