CN107903790B - Water-based wood paint with air purification and sterilization functions and preparation method thereof - Google Patents
Water-based wood paint with air purification and sterilization functions and preparation method thereof Download PDFInfo
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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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
- C09D143/00—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 containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
- C09D143/04—Homopolymers or copolymers of monomers containing silicon
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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
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
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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
- C08K2003/221—Oxides; Hydroxides of metals of rare earth metal
- C08K2003/2213—Oxides; Hydroxides of metals of rare earth metal of cerium
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/06—Ethers; Acetals; Ketals; Ortho-esters
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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
- C08K9/00—Use of pretreated ingredients
- C08K9/02—Ingredients treated with inorganic substances
Abstract
The invention discloses an aqueous wood lacquer with air purification and sterilization functions, which comprises 0.1-1.0% of nano titanium dioxide, 0.001-0.01% of cerium dioxide, 20-60% of emulsion, 2-10% of film-forming agent and 30-70% of water by weight percent. The water-based wood paint has the functions of purifying air and sterilizing, when the water-based wood paint disclosed by the invention is coated on the surface of a wood material, organic pollutants (formaldehyde, benzene, ammonia and the like) in the wood material need to penetrate through the water-based wood paint before entering the air, and when the organic pollutants penetrate through the water-based wood paint, the organic pollutants can be decomposed and removed completely to obtain harmless carbon dioxide and water, so that the effect of purifying the air can be achieved, and meanwhile, bacteria on the surface of the wood material can be killed by the water-based wood paint. The invention also discloses a preparation method of the water-based wood paint with the functions of purifying air and sterilizing.
Description
Technical Field
The invention relates to the technical field of wood lacquer, in particular to water-based wood lacquer with air purification and sterilization functions and a preparation method thereof.
Background
Along with the improvement of living standard of people, people pay more and more attention to their health, and in recent years, reports about the relationship between indoor air pollution after new decoration and the incidence rate of leukemia are also frequently seen as media. Therefore, people pay more and more attention to the environmental protection of decoration materials during decoration, when wooden doors, wardrobes, suspended ceilings and decoration shapes are manufactured in home decoration, a large amount of wood, especially artificial boards such as plywood and fiberboard, is used, wooden furniture, wooden toys, wooden decorations and the like manufactured by the artificial boards contain organic pollutants (formaldehyde, benzene, ammonia and the like), in order to reduce the harm of the organic pollutants (formaldehyde, benzene, ammonia and the like) to human bodies, at present, wooden paint is often coated on the surfaces of the wooden doors, the wooden furniture, the wooden toys and the wooden decorations to seal or slow down the volatilization of the organic pollutants (formaldehyde, benzene, ammonia and the like), and the total amount of the organic pollutants (formaldehyde, benzene, ammonia and the like) still volatilizes indoors and is absorbed by the human bodies for a long time and is not beneficial to the health, so the method belongs to the method for addressing both the symptoms and root causes.
Therefore, there is a need to provide a new wood lacquer to solve the above problems.
Disclosure of Invention
One of the purposes of the invention is to provide the water-based wood paint which has the functions of purifying air and sterilizing.
The invention also aims to provide a preparation method of the water-based wood paint.
In order to achieve the purpose, the water-based wood paint with the functions of purifying air and sterilizing is provided, and comprises the following components in percentage by weight:
compared with the prior art, in the water-based wood lacquer with air purification and sterilization functions, the nanometer titanium dioxide absorbs light energy to release electrons, water molecules in the air capture the electrons to form hydroxyl radicals (-HO), and oxygen molecules capture the electrons to form negative oxygen ions (O)2-, both hydroxyl radical and negative oxygen ion have powerful oxidizing and decomposing capacity to oxidize and decompose organic pollutant into harmless carbon dioxide (CO)2) And water (H)2O) and can oxidatively decompose cell membranes and proteins of germs, thereby killing bacteria. In particular by using Ti4+The ionic radius of the ion (about 60.5pm) is much smaller than that of Ce4+Ionic radius of ion (about 103.4pm), Ti4+Ions can easily enter cerium oxide (CeO)2) Thereby causing a charge imbalance, and thus more hydroxide ions can be adsorbed due to the charge imbalance. More hydroxyl radicals are formed after the hydroxyl ions obtain electrons released by the nano titanium dioxide, so that the photocatalytic activity of the nano titanium dioxide is improved, and the capacities of oxidizing and decomposing organic pollutants and killing bacteria by the hydroxyl radicals are further improved. The emulsion in the water-based wood paint can prevent the titanium dioxide from flocculating, ensure that the titanium dioxide is always in a nanometer level and promote the titanium dioxide to be photocatalytic to generate active electrons. With the coating of wood lacquer of this application on wooden material surface, organic pollutant (formaldehyde, benzene, ammonia etc.) in the wooden material need pierce through this waterborne wood lacquer earlier when entering the air, however when organic pollutant pierces through this waterborne wood lacquer with air-purifying and function of disinfecting, organic pollutant (formaldehyde, benzene, ammonia etc.) can be cleared away totally by hydroxyl radical and negative oxygen ion decomposition to reach air-purifying's effect, the waterborne wood lacquer of this application can also kill the bacterium on wooden material surface simultaneously.
Preferably, the nano titanium dioxide of the invention is anatase type nano titanium dioxide.
Preferably, the particle size of the anatase type nano titanium dioxide is less than or equal to 10 nanometers.
Preferably, the emulsion of the present invention is selected from one of silicone-acrylic emulsion, pure acrylic emulsion or polyurethane dispersion.
Preferably, the film forming agent of the present invention is selected from one of dipropylene glycol ether or lauryl alcohol ester.
Preferably, the water-based wood lacquer with air purification and sterilization functions further comprises 0.5-3% of an auxiliary agent in percentage by weight.
Preferably, the auxiliary agent of the present invention is selected from one or more of a bactericide, a mildewproof agent, a wetting agent, a defoaming agent, an antifreezing agent, a pH adjusting agent, a thickening agent or a leveling agent.
Preferably, the bactericide of the present invention is methylisothiazolinone.
Preferably, the mildew inhibitor is selected from one of carbendazim or n-octyl isoquinazolinone or a mixture thereof.
Preferably, the wetting agent of the present invention is selected from nonionic surfactants.
Preferably, the defoamer of the invention is a water-based paint defoamer.
Preferably, the pH adjusting agent of the present invention is AMP-95.
Preferably, the antifreeze of the present invention is propylene glycol.
Preferably, the thickener of the present invention is selected from a mixture of aqueous polyurethane and hydrophobic acrylic liquid.
The invention also provides a preparation method of the water-based wood paint with the functions of purifying air and sterilizing, which comprises the following steps:
(1) pretreating cerium dioxide by using nitric acid: heating nitric acid to 50-80 ℃, adding cerium dioxide, and uniformly stirring to obtain a mixed solution A;
(2) treating nano titanium dioxide to obtain nano titanium dioxide hydrosol, adding the titanium dioxide hydrosol into the mixed solution A, keeping the temperature at 50-80 ℃, and uniformly stirring to obtain hydrosol B;
(3) adding part of water into the hydrosol B, and heating until the water is boiled to prepare hydrosol C;
(4) mixing the emulsion, the film-forming agent and the rest water, and uniformly stirring to obtain semitransparent slurry;
(5) and (4) adding the hydrosol C obtained in the step (3) into the semitransparent slurry obtained in the step (4) and uniformly mixing to obtain the water-based wood lacquer with air purification and sterilization functions.
Preferably, in the step (1), the stirring time is 30-60 min.
Preferably, in the step (2), the stirring time is 10-30 min.
Preferably, when the aqueous wood lacquer with air purifying and sterilizing functions contains the auxiliary agent, the auxiliary agent is placed in the step (4) in the process of preparing the aqueous wood lacquer with air purifying and sterilizing functions, namely, the step (4) is to mix the auxiliary agent, the emulsion, the film forming agent and the rest water, then stir the mixture evenly to obtain the translucent pulp, and the other steps are not changed.
Firstly, the cerium dioxide is pretreated by nitric acid, then the cerium dioxide is mixed with the nano titanium dioxide hydrosol, and the mixture is uniformly stirred, so that cerium dioxide moleculesAttached to the nano titanium dioxide particles to obtain the hydrosol B, thereby ensuring Ti4+Ions can easily enter cerium oxide (CeO)2) The crystal lattice can more effectively cause charge imbalance, improve the content of hydroxyl free radicals and promote the oxidative decomposition capacity, then part of water is added into the liquid sol B, the mixture is heated until the water boils to remove nitric acid, liquid sol C is prepared, then the liquid sol C is added into semitransparent slurry obtained by mixing emulsion, a film-forming agent and the rest water, and the semitransparent slurry is mixed to obtain the water-based wood lacquer with the functions of air purification and sterilization, and the step can prevent titanium dioxide from flocculating.
Detailed Description
For further understanding of the present application, the following description of the preferred embodiments of the present invention is provided by way of specific embodiments, but is not intended to limit the present invention in any way.
The invention provides an aqueous wood lacquer with air purification and sterilization functions, which comprises the following components in percentage by weight:
in the application, the weight percentage of the nano titanium dioxide is 0.1-1.0%, and specifically can be 0.1%, 0.3%, 0.6%, 0.8%, 1.0%; the cerium dioxide accounts for 0.001-0.01 wt%, specifically 0.001%, 0.005%, 0.008%, 0.01%; the weight percentage of the emulsion is 20-60%, and specifically can be 20%, 30%, 40%, 50%, 60%; the weight percentage of the film forming agent is 2-10%, and specifically can be 2%, 4%, 6%, 8% and 10%; the weight percentage of water is 30-70%, specifically 30%, 40%, 50%, 60%, 70%.
In the application, the nanometer titanium dioxide can release electrons when absorbing light energy, water molecules in the air capture the electrons to form hydroxyl radicals (-HO), and oxygen molecules capture the electrons to form negative oxygen ions (O)2-) Both the hydroxyl radical and the negative oxygen ion have strong oxidative decomposition capability, and can oxidize and decompose organic pollutants (formaldehyde, benzene, ammonia and the like) into harmless carbon dioxide (CO)2) And water (H)2O), and also oxidatively decompose cell membranes and proteins of pathogens, thereby killing the bacteria. In particular to the water-based wood lacquer with air purification and sterilization functions, which contains cerium dioxide and Ti4+The ionic radius of the ion (about 60.5pm) is much smaller than that of Ce4+Ionic radius of ion (about 103.4pm), Ti4+Ions can easily enter cerium oxide (CeO)2) Thereby causing a charge imbalance, and more hydroxide ions can be adsorbed due to the charge imbalance. More hydroxyl radicals are formed after the hydroxyl ions obtain electrons released by the nano titanium dioxide, so that the photocatalytic activity of the nano titanium dioxide is improved, the capacities of oxidizing and decomposing organic pollutants and killing bacteria by the hydroxyl radicals are further improved, the emulsion can prevent the titanium dioxide from flocculating, the titanium dioxide is ensured to be always at a nano level, and the active electrons generated by photocatalysis are promoted. With the coating of wood lacquer of this application on wooden material surface, organic pollutant (formaldehyde, benzene, ammonia etc.) in the wooden material need pierce through this waterborne wood lacquer earlier when entering the air, however when organic pollutant pierces through this waterborne wood lacquer with air-purifying and function of disinfecting, organic pollutant (formaldehyde, benzene, ammonia etc.) can be cleared away totally by hydroxyl radical and negative oxygen ion decomposition to reach air-purifying's effect, the waterborne wood lacquer of this application can also kill the bacterium on wooden material surface simultaneously.
In the invention, the nano titanium dioxide can be anatase type titanium dioxide and rutile type titanium dioxide, and because anatase type titanium dioxide has higher activity and less impurity content, and has no rutile stability in crystal form, and is easier to generate active electrons by photocatalysis, the effect of selecting anatase type nano titanium dioxide is better, preferably, the particle size of the anatase type nano titanium dioxide is less than or equal to 10 nanometers, and specifically can be 1 nanometer, 3 nanometers, 5 nanometers, 8 nanometers and 10 nanometers.
In the invention, the emulsion is selected from one of silicone-acrylic emulsion, pure acrylic emulsion or polyurethane dispersion, preferably polyurethane dispersion, which has good compatibility with nano titanium dioxide, when the waterborne wood lacquer is dried and cured, water can be evaporated from a lacquer film to form capillary pores, in the nano titanium dioxide hydrosol, water molecules have good compatibility with nano titanium dioxide particles, and when the water is evaporated, the nano titanium dioxide particles can be carried to the surface of the lacquer film, thereby avoiding the nano titanium dioxide being completely wrapped by the polyurethane dispersion.
In the invention, the film forming agent is selected from one of dipropylene glycol ether or dodecyl alcohol ester, wherein the dipropylene glycol ether can be dipropylene glycol butyl ether or dipropylene glycol methyl ether.
Preferably, the water-based wood lacquer with air purifying and sterilizing functions further comprises an auxiliary agent, wherein the auxiliary agent is 0.5-3 wt%, and specifically 0.5%, 1%, 1.5%, 2%, 2.5%, 3%.
In the invention, the auxiliary agent is selected from one or more of bactericide, mildew preventive, wetting agent, defoaming agent, antifreezing agent, pH regulator, thickener or leveling agent. According to actual needs, the performance of the water-based wood paint can be improved according to the addition of different additives. Specifically, the bactericide is methylisothiazolinone; the mildew inhibitor is selected from carbendazim or n-octyl isoquinazolinone or mixture thereof; the wetting agent is selected from nonionic surfactants, in particular siloxane copolymers; the defoaming agent is a water-based paint defoaming agent, has the performances of self-emulsification, easy dispersion, strong universality, good defoaming property, lasting foam inhibition and the like, can prevent titanium dioxide from flocculating, ensures that the titanium dioxide is always in a nanometer level, does not generate surface defects or influence film forming property, and has a special effect on a water-based paint system; the pH regulator is AMP-95; the antifreezing agent is propylene glycol; the thickener is selected from a mixture of aqueous polyurethane and hydrophobic acrylic liquid; the leveling agent is polyacrylic acid or carboxymethyl cellulose, can promote the water-based paint to form a flat, smooth and uniform coating film in the drying film-forming process, can also reduce spots and stains generated in the brushing process, increases the coverage, and enables the film to be formed uniformly and naturally.
In the present invention, distilled water, deionized water and the like are preferably used as water.
The invention also provides a preparation method of the water-based wood paint with the functions of purifying air and sterilizing, which comprises the following steps:
(1) pretreating cerium dioxide by using nitric acid: heating nitric acid to 50-80 ℃, adding cerium dioxide, and uniformly stirring to obtain a mixed solution A;
(2) treating nano titanium dioxide to obtain nano titanium dioxide hydrosol, adding the titanium dioxide hydrosol into the mixed solution A, keeping the temperature at 50-80 ℃, and uniformly stirring to obtain hydrosol B;
(3) adding water into the hydrosol B, and heating until the water is boiled to prepare a hydrosol C;
(4) mixing the emulsion, the film-forming agent and the rest water, and uniformly stirring to obtain translucent pulp;
(5) and (4) adding the hydrosol C obtained in the step (3) into the semitransparent slurry obtained in the step (4), and uniformly mixing to obtain the water-based wood lacquer with air purification and sterilization functions.
In the invention, nitric acid is firstly adopted to pretreat cerium dioxide, which is beneficial to the uniform adhesion and combination of cerium dioxide molecules and nano titanium dioxide particles, and attention is paid to firstly preparing hydrosol in which the cerium dioxide molecules are adhered to the nano titanium dioxide particles, then adding emulsion, film-forming agent and water, mixing and stirring to obtain semitransparent slurry so as to ensure that the cerium dioxide molecules are adhered to the nano titanium dioxide particles, and Ti4+Ions can easily enter the cerium oxide (CeO)2) The crystal lattice of (1).
In the invention, in step (1), nitric acid is heated to 50-80 ℃, specifically 50 ℃, 60 ℃, 70 ℃, 80 ℃, cerium dioxide is added, and preferably, the mixture is stirred for 30-60min, specifically 30min, 40min, 50min, 60min, so as to obtain a mixed solution A.
In the invention, in the step (2), a nano titania hydrosol can be obtained by heating nano titania and water, and the titania hydrosol is added into the mixed solution a, and the temperature is kept at 50 ℃ to 80 ℃, specifically at 50 ℃, 60 ℃, 70 ℃ and 80 ℃, preferably, the mixture is stirred for 10min to 30min, specifically, 10min, 20min and 30min, so as to obtain the hydrosol B.
In the invention, in the step (3), the nitric acid is volatilized by heating the water to boil, so as to reduce the influence on the performance of the water-based wood lacquer.
In the invention, when the aqueous wood lacquer with air purification and sterilization functions contains the auxiliary agent, the auxiliary agent is placed in the step (4) in the process of preparing the aqueous wood lacquer, namely, the step (4) is to mix the auxiliary agent, the emulsion, the film-forming agent and the rest water and then stir the mixture uniformly to obtain the semitransparent pulp, and other steps are not changed and are not detailed herein.
The present application is described in further detail below with reference to specific examples.
Example 1
The preparation method of the water-based wood paint with air purification and sterilization functions comprises the following steps:
(1) pretreating cerium dioxide by using nitric acid, heating the nitric acid to 50 ℃, adding the cerium dioxide, and uniformly stirring for 30min to obtain a mixed solution A;
(2) heating the nano titanium dioxide and the first part of water to obtain nano titanium dioxide hydrosol, adding the titanium dioxide hydrosol into the mixed solution A, keeping the temperature at 50 ℃, and uniformly stirring for 15min to obtain hydrosol B;
(3) adding a second part of water into the hydrosol B, heating until the water boils, and volatilizing the nitric acid to obtain hydrosol C;
(4) mixing the emulsion, the film-forming agent and the rest water, and uniformly stirring to obtain translucent pulp;
(5) and (4) adding the hydrosol C obtained in the step (3) into the semitransparent slurry obtained in the step (4) and uniformly mixing to obtain the water-based wood lacquer with air purification and sterilization functions.
Wherein the nano titanium dioxide adopts anatase type titanium dioxide, the content is 0.1 percent, and the particle size is 5 nanometers; the content of cerium dioxide is 0.005%; the emulsion is a polyurethane dispersion with the content of 20 percent; the film forming agent adopts dipropylene glycol butyl ether, and the content is 4%; the water is distilled water, the content of the first part of water, the second part of water and the rest of water is 30 percent in total, the specific content can be taken as the actual situation, and the detailed description is not repeated.
Example 2
(1) Pretreating cerium dioxide by using nitric acid, heating the nitric acid to 50 ℃, adding the cerium dioxide, and uniformly stirring for 30min to obtain a mixed solution A;
(2) heating the nano titanium dioxide and the first part of water to obtain nano titanium dioxide hydrosol, adding the titanium dioxide hydrosol into the mixed solution A, keeping the temperature at 50 ℃, and uniformly stirring for 15min to obtain hydrosol B;
(3) adding a second part of water into the hydrosol B, heating until the water boils, and volatilizing the nitric acid to obtain hydrosol C;
(4) mixing the emulsion, the film-forming agent, the auxiliary agent and the rest water, and uniformly stirring to obtain semitransparent slurry;
(5) and (4) adding the hydrosol C obtained in the step (3) into the semitransparent slurry obtained in the step (4), and uniformly mixing to obtain the water-based wood lacquer with air purification and sterilization functions.
Wherein the nano titanium dioxide adopts anatase type titanium dioxide, the content is 0.1 percent, and the particle size is 5 nanometers; the content of cerium dioxide is 0.005%; the emulsion is a polyurethane dispersion with the content of 20 percent; the film forming agent adopts dipropylene glycol butyl ether, and the content is 4%; the water is distilled water, and the content is 30%; the assistant is a water-based paint defoamer with the content of 1 percent.
Example 3
The composition and content of this example were substantially the same as those of example 1, and the production method of this example was substantially the same as that of example 1, except that rutile type titanium dioxide was used as the nano titanium dioxide in this example, and anatase type titanium dioxide was used as that of example 1.
Example 4
The composition and content of this example were substantially the same as those of example 1, and the production method of this example was substantially the same as that of example 1, except that the particle diameter of anatase titania in this example was 15 nm, and the particle diameter of anatase titania in example 1 was 5 nm.
Example 5
The components and contents of this example are substantially the same as those of example 2, and the preparation method of this example is substantially the same as that of example 2, except that the emulsion used in this example is a silicone-acrylic emulsion, and the emulsion used in example 2 is a polyurethane dispersion.
Example 6
The components and contents of this example are substantially the same as those of example 2, and the preparation method of this example is substantially the same as that of example 2, except that in this example: the nano titanium dioxide adopts anatase type titanium dioxide, the content is 0.5 percent, and the particle size is 8 nanometers; the ceria content was 0.001%; the emulsion is a polyurethane dispersion with the content of 40 percent; the film forming agent adopts dipropylene glycol butyl ether, and the content is 8%; the water is distilled water, and the content is 50%; the auxiliary agent is methyl isoquinazolinone, and the content is 2%.
Example 7
The components and contents of this example are substantially the same as those of example 2, and the preparation method of this example is substantially the same as that of example 2, except that in this example: the nano titanium dioxide adopts anatase type titanium dioxide, the content is 1.0 percent, and the particle size is 2 nanometers; the content of cerium dioxide is 0.01%; the emulsion is a polyurethane dispersion with the content of 60 percent; the film forming agent adopts dipropylene glycol butyl ether, and the content is 2%; the water is distilled water, and the content is 70%; the auxiliary agent is a mixture of waterborne polyurethane and hydrophobic acrylic liquid, and the content of the auxiliary agent is 0.5 percent.
Example 8
The preparation method of the water-based wood paint with air purification and sterilization functions comprises the following steps:
(1) heating nano titanium dioxide and first part of water to obtain nano titanium dioxide hydrosol, mixing cerium dioxide and titanium dioxide hydrosol, keeping the temperature at 50 ℃, and uniformly stirring for 15min to obtain hydrosol A;
(2) mixing the emulsion, the film-forming agent and the rest water, and uniformly stirring to obtain semitransparent slurry;
(3) and (3) adding the hydrosol A obtained in the step (1) into the semitransparent slurry obtained in the step (2) and uniformly mixing to obtain the water-based wood lacquer with air purification and sterilization functions.
Wherein the nano titanium dioxide adopts anatase type titanium dioxide, the content is 0.1 percent, and the particle size is 5 nanometers; the content of cerium dioxide is 0.005%; the emulsion is a polyurethane dispersion with the content of 20 percent; the film forming agent adopts dipropylene glycol butyl ether, and the content is 4%; the water is distilled water, and the content is 30%.
Comparative example 1
The preparation method of the aqueous wood lacquer comprises the following steps:
(1) heating the nano titanium dioxide and the first part of water to obtain nano titanium dioxide hydrosol;
(2) mixing the emulsion, the film-forming agent and the rest water, and uniformly stirring to obtain translucent pulp;
(3) and (3) adding the hydrosol obtained in the step (1) into the translucent pulp obtained in the step (2) and uniformly mixing to obtain the water-based wood paint.
Wherein the nano titanium dioxide adopts anatase type titanium dioxide, the content is 0.1 percent, and the particle size is 5 nanometers; the emulsion is a polyurethane dispersion with the content of 20 percent; the film forming agent adopts dipropylene glycol butyl ether, and the content is 4%; the water is distilled water, and the content is 30%.
Comparative example 2
The preparation method of the aqueous wood lacquer comprises the following steps:
(1) pretreating cerium dioxide by using nitric acid, heating the nitric acid to 50 ℃, adding the cerium dioxide, and uniformly stirring for 30min to obtain a mixed solution A;
(2) heating the nano titanium dioxide and the first part of water to obtain nano titanium dioxide hydrosol, adding the titanium dioxide hydrosol into the mixed solution A, keeping the temperature at 50 ℃, and uniformly stirring for 15min to obtain hydrosol B;
(3) adding a second part of water into the hydrosol B, heating until the water boils, and volatilizing the nitric acid to obtain hydrosol C;
(4) mixing the film forming agent and the rest water, and uniformly stirring to obtain semitransparent slurry;
(5) and (4) adding the hydrosol C obtained in the step (3) into the semitransparent slurry obtained in the step (4) and uniformly mixing to obtain the water-based wood lacquer.
Wherein the nano titanium dioxide adopts anatase type titanium dioxide, the content is 0.1 percent, and the particle size is 5 nanometers; the content of cerium dioxide is 0.005%; the film forming agent adopts dipropylene glycol butyl ether, and the content is 4%; the water is distilled water, and the content is 30%.
The aqueous wood lacquer obtained in examples 1-8 and comparative examples 1-2 was tested, and the test items and conditions were as follows:
1, the formaldehyde removal rate is detected by referring to QB/T2761-2006, wherein a light source is 3 fluorescent lamps with 40 watts and the fluorescent lamps are irradiated for 72 hours.
2, antibacterial performance test (Staphylococcus aureus), test with reference to JC/T897-2002, wherein 110W (two 55W lamps each emitting white light) energy-saving lamps are used for irradiating for 24 h.
The results of the formaldehyde removal rate are shown in table 1, and the antibacterial performance tests are shown in table 2, which are specifically as follows:
table 1:
table 2:
| test group | Test time | Test strains | The antibacterial rate% |
| Example 1 | 24h | Staphylococcus aureus | 98.9 |
| Example 2 | 24h | Staphylococcus aureus | 99.5 |
| Example 3 | 24h | Staphylococcus aureus | 98.6 |
| Example 4 | 24h | Staphylococcus aureus | 98.7 |
| Example 5 | 24h | Staphylococcus aureus | 99.2 |
| Example 6 | 24h | Staphylococcus aureus | 99.7 |
| Example 7 | 24h | Staphylococcus aureus | 99.4 |
| Example 8 | 24h | Staphylococcus aureus | 85.2 |
| Comparative example 1 | 24h | Staphylococcus aureus | 81.2 |
| Comparative example 2 | 24h | Staphylococcus aureus | 58.3 |
As can be seen from tables 1 and 2, the formaldehyde removing ability and the sterilizing ability of the aqueous wood paints having air purifying and sterilizing functions in examples 1-8 are better than those of comparative examples 1-2, and mainly because the aqueous wood paints having air purifying and sterilizing functions in examples 1-8 comprise cerium dioxide and Ti, compared with comparative example 14+The ionic radius of the ion (about 60.5pm) is much smaller than that of Ce4 +Ionic radius of ion (about 103.4pm), Ti4+Ions can easily enter cerium oxide (CeO)2) The crystal lattice can absorb more hydroxide ions due to the charge imbalance, and the hydroxide ions form more hydroxide radicals after acquiring electrons released by the nano titanium dioxide, so that the photocatalytic activity of the nano titanium dioxide is improved, and the capability of the hydroxide radicals of oxidizing and decomposing organic pollutants and killing bacteria is further improved. In comparative example 2, although cerium oxide was contained, in the absence of emulsion, titanium oxide was not well dispersed, which may cause flocculation of titanium oxide, and the particle size of nano titanium oxide after flocculation was no longer on the order of nanometers, thus having no photocatalytic activity.
Compared with the example 2, the aqueous wood lacquer with air purifying and sterilizing functions in the example 2 has better formaldehyde removing capability and sterilizing capability than the example 1, and because the auxiliary agent is added in the example 2, the flocculation of the titanium dioxide can be further prevented, the titanium dioxide is ensured to be always in a nanometer level, and the photocatalytic activity is improved.
Compared with the example 3, the aqueous wood lacquer with air purifying and sterilizing functions in the example 1 has better formaldehyde removing capability and sterilizing capability than the example 3, probably because the anatase titanium dioxide has higher activity and less impurities, and the crystal form is not stable in rutile, so that the anatase titanium dioxide is more easily subjected to photocatalysis to generate active electrons.
Comparing example 1 with example 4, it can be seen that the formaldehyde removing ability and the sterilization ability of the aqueous wood lacquer with air purifying and sterilization functions in example 1 are better than those of example 4, probably because the active electrons are generated by photocatalysis more easily when the particle size of the anatase type nano titanium dioxide is smaller.
Compared with the example 5, it can be seen that the formaldehyde removing capability and the sterilization capability of the aqueous wood lacquer with the air purifying and sterilization functions in the example 2 are better than those in the example 5, probably because the polyurethane dispersion and the nano titanium dioxide have good compatibility, when the wood lacquer is dried and cured, water can be evaporated from a lacquer film to form capillary pores, in the nano titanium dioxide hydrosol, water molecules have good compatibility with the nano titanium dioxide particles, and when the water is evaporated, the nano titanium dioxide particles can be carried to the surface of the lacquer film, so that the nano titanium dioxide is prevented from being completely wrapped by the polyurethane dispersion, the light is irradiated in a larger range, and electrons are released more easily.
Comparing example 1 with example 8, it can be seen that the formaldehyde removing ability and the sterilization ability of the aqueous wood lacquer with air purifying and sterilization functions in example 1 are better than those of example 8, probably because the ceria molecules are difficult to attach to the nano-titania particles without pre-treatment of the ceria.
The present invention has been described in connection with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, and is intended to cover various modifications, equivalent combinations, which are made in accordance with the spirit of the present invention.
Claims (8)
1. A preparation method of water-based wood paint with air purification and sterilization functions is characterized by comprising the following steps:
(1) pretreating cerium dioxide by using nitric acid: heating the nitric acid to 50-80 ℃, adding the cerium dioxide, and uniformly stirring to obtain a mixed solution A;
(2) treating nano titanium dioxide to obtain nano titanium dioxide hydrosol, adding the titanium dioxide hydrosol into the mixed solution A, keeping the temperature at 50-80 ℃, and uniformly stirring to obtain hydrosol B;
(3) adding part of water into the hydrosol B, and heating until the water boils to prepare a hydrosol C;
(4) mixing the emulsion, the film-forming agent and the rest water, and uniformly stirring to obtain translucent pulp;
(5) adding the hydrosol C obtained in the step (3) into the semitransparent slurry obtained in the step (4), and uniformly mixing to obtain the water-based wood lacquer with air purification and sterilization functions;
wherein, this waterborne wood lacquer with air-purifying and function of disinfecting, by weight percent, includes:
0.1 to 1.0 percent of nano titanium dioxide;
0.001% -0.01% of cerium dioxide;
20% -60% of emulsion;
2% -10% of film-forming agent;
30% -70% of water;
the emulsion is selected from one of silicone-acrylic emulsion, pure acrylic emulsion or polyurethane dispersion.
2. The method for preparing an aqueous wood lacquer with air-purifying and sterilizing functions as claimed in claim 1, wherein the nano titanium dioxide is anatase type nano titanium dioxide.
3. The method for preparing the aqueous wood lacquer with air-purifying and sterilizing functions as claimed in claim 2, wherein the particle size of the anatase type nano titanium dioxide is less than or equal to 10 nm.
4. The method for preparing the aqueous wood lacquer with air purifying and sterilizing functions as claimed in claim 1, wherein the film forming agent is selected from one of dipropylene glycol ether or dodecyl alcohol ester.
5. The preparation method of the water-based wood lacquer with air purifying and sterilizing functions as claimed in claim 1, further comprising 0.5-3% of an auxiliary agent by weight.
6. The method for preparing the water-based wood lacquer with air purifying and sterilizing functions as claimed in claim 5, wherein the auxiliary agent is one or more selected from a bactericide, a mildew preventive, a wetting agent, a defoaming agent, an antifreezing agent, a pH regulator, a thickener or a leveling agent.
7. The method for preparing an aqueous wood lacquer with air purifying and sterilizing functions according to claim 1, wherein in the step (1), the stirring time is 30-60 min.
8. The method for preparing an aqueous wood lacquer with air-purifying and sterilizing functions according to claim 1, wherein in the step (2), the stirring time is 10-30 min.
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| TW202037683A (en) * | 2019-04-02 | 2020-10-16 | 新福光塗裝工程股份有限公司 | Antibacterial coating and coating method which includes antibacterial particles that are all located near a surface of the paint with excellent abrasion resistance and adhesion performance |
| CN110548663A (en) * | 2019-07-30 | 2019-12-10 | 久保清新材料科技(上海)有限公司 | method for preparing photocatalytic coating on surface of wooden material |
| CN112029332B (en) * | 2020-09-04 | 2022-03-11 | 万华化学集团股份有限公司 | Water-based antibacterial coating and preparation method thereof |
| CN112812629A (en) * | 2021-02-19 | 2021-05-18 | 管仲洲 | Water-based wood paint with air purification function and preparation method thereof |
| CN112920662A (en) * | 2021-02-26 | 2021-06-08 | 东莞大宝化工制品有限公司 | Woodenware paint and preparation method thereof |
| CN112959765A (en) * | 2021-04-06 | 2021-06-15 | 区绍贤 | Preparation process of plastic decorative sheet capable of purifying air for a long time |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101037553A (en) * | 2007-02-13 | 2007-09-19 | 云南大学 | Preparation and application method of optical catalysed environment protection type coating |
| CN102093794A (en) * | 2010-12-31 | 2011-06-15 | 东莞市明天纳米科技有限公司 | Method for preparing nano-titanium dioxide photocatalytic bactericidal coating |
| CN102140290A (en) * | 2010-11-19 | 2011-08-03 | 吴江龙泾红贝家装有限公司 | Woodware coating |
| CN102329546A (en) * | 2011-10-26 | 2012-01-25 | 东莞市明天纳米科技有限公司 | Wall paint containing nano-titanium dioxide and preparation method for wall paint |
| CN103923501A (en) * | 2014-04-10 | 2014-07-16 | 上海理工大学 | Nano-sol for forming anti-aging and stain-resistant nano-coating and preparation method and application thereof |
-
2017
- 2017-11-24 CN CN201711203406.XA patent/CN107903790B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101037553A (en) * | 2007-02-13 | 2007-09-19 | 云南大学 | Preparation and application method of optical catalysed environment protection type coating |
| CN102140290A (en) * | 2010-11-19 | 2011-08-03 | 吴江龙泾红贝家装有限公司 | Woodware coating |
| CN102093794A (en) * | 2010-12-31 | 2011-06-15 | 东莞市明天纳米科技有限公司 | Method for preparing nano-titanium dioxide photocatalytic bactericidal coating |
| CN102329546A (en) * | 2011-10-26 | 2012-01-25 | 东莞市明天纳米科技有限公司 | Wall paint containing nano-titanium dioxide and preparation method for wall paint |
| CN103923501A (en) * | 2014-04-10 | 2014-07-16 | 上海理工大学 | Nano-sol for forming anti-aging and stain-resistant nano-coating and preparation method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 掺金属离子纳米TiO2薄膜光催化性能及机理研究;黄美莹;《中国优秀硕士学位论文全文数据库（工程科技I辑）》;20080115;正文第18-19、33页 * |
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