CN112812640A - Photocatalytic antibacterial antiviral formaldehyde-removing peculiar smell-removing varnish - Google Patents
Photocatalytic antibacterial antiviral formaldehyde-removing peculiar smell-removing varnish Download PDFInfo
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- CN112812640A CN112812640A CN202110047074.0A CN202110047074A CN112812640A CN 112812640 A CN112812640 A CN 112812640A CN 202110047074 A CN202110047074 A CN 202110047074A CN 112812640 A CN112812640 A CN 112812640A
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- 230000001699 photocatalysis Effects 0.000 title claims abstract description 65
- 239000002966 varnish Substances 0.000 title claims abstract description 48
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 35
- 230000000840 anti-viral effect Effects 0.000 title claims abstract description 29
- 238000006243 chemical reaction Methods 0.000 claims abstract description 29
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 26
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 26
- 239000011941 photocatalyst Substances 0.000 claims abstract description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000006185 dispersion Substances 0.000 claims abstract description 15
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims description 74
- 239000011347 resin Substances 0.000 claims description 20
- 229920005989 resin Polymers 0.000 claims description 20
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000000243 solution Substances 0.000 claims description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- 239000000080 wetting agent Substances 0.000 claims description 17
- 239000007864 aqueous solution Substances 0.000 claims description 15
- 239000000049 pigment Substances 0.000 claims description 14
- 239000002270 dispersing agent Substances 0.000 claims description 13
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 10
- 239000003755 preservative agent Substances 0.000 claims description 10
- 230000002335 preservative effect Effects 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 239000002518 antifoaming agent Substances 0.000 claims description 8
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical group [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000012752 auxiliary agent Substances 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 239000011541 reaction mixture Substances 0.000 claims description 5
- 239000011247 coating layer Substances 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 4
- 229920002126 Acrylic acid copolymer Polymers 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 3
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 3
- 229910052588 hydroxylapatite Inorganic materials 0.000 claims description 3
- -1 lauryl alcohol ester Chemical class 0.000 claims description 3
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 3
- 239000010452 phosphate Substances 0.000 claims description 3
- 229920002620 polyvinyl fluoride Polymers 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 claims description 3
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 3
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 3
- RLQWHDODQVOVKU-UHFFFAOYSA-N tetrapotassium;silicate Chemical compound [K+].[K+].[K+].[K+].[O-][Si]([O-])([O-])[O-] RLQWHDODQVOVKU-UHFFFAOYSA-N 0.000 claims description 3
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 3
- 230000002421 anti-septic effect Effects 0.000 claims 1
- 238000010422 painting Methods 0.000 claims 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract description 21
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract description 9
- 238000002360 preparation method Methods 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 abstract description 4
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 abstract description 4
- 238000013033 photocatalytic degradation reaction Methods 0.000 abstract description 3
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000746 purification Methods 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 239000003973 paint Substances 0.000 description 7
- 238000001514 detection method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000001680 brushing effect Effects 0.000 description 4
- ZSIAUFGUXNUGDI-UHFFFAOYSA-N hexan-1-ol Chemical compound CCCCCCO ZSIAUFGUXNUGDI-UHFFFAOYSA-N 0.000 description 4
- 230000003385 bacteriostatic effect Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 239000013530 defoamer Substances 0.000 description 2
- 239000002320 enamel (paints) Substances 0.000 description 2
- LQZZUXJYWNFBMV-UHFFFAOYSA-N ethyl butylhexanol Natural products CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 230000001603 reducing effect Effects 0.000 description 2
- 241000222122 Candida albicans Species 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 241000191967 Staphylococcus aureus Species 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229940095731 candida albicans Drugs 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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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
-
- 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
-
- 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
- C09D5/32—Radiation-absorbing paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2272—Ferric oxide (Fe2O3)
-
- 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
Abstract
The invention relates to the field of varnish preparation, in particular to a photocatalytic antibacterial antiviral formaldehyde odor removing varnish which comprises a photocatalytic component and a film forming component, wherein the weight ratio of the photocatalytic component to the film forming component is 1:1-9, the photocatalytic component is prepared by adding acrylic resin into a dispersion of a photocatalyst in an alcohol solution for reaction, the photocatalytic antibacterial formaldehyde odor removing varnish prepared by the method can effectively remove formaldehyde, toluene and TVOC odor in the varnish, has a good space purification function, and the photocatalyst in the formed varnish is uniformly dispersed, is beneficial to absorbing ultraviolet rays under the action of nano titanium dioxide, and improves the performances of photocatalytic degradation of harmful gases and sterilization and disinfection of the varnish.
Description
Technical Field
The invention relates to the field of varnish preparation, and in particular relates to a photocatalytic antibacterial antiviral formaldehyde-removing peculiar smell-removing varnish.
Background
Varnish, also known as varnish, is a coating consisting of a resin as the main film-forming substance plus a solvent. Since both the coating material and the coating film are transparent, they are also called transparent coating materials. Coating on the surface of the object, drying to form a smooth film, and showing the original texture of the object surface. The varnish can be used for coating furniture, floors, doors and windows, automobiles and the like. Pigment can also be added to prepare enamel paint, or dye can be added to prepare colored varnish. It can also be used for making enamel paint and impregnating electric appliance, or fixing sketches of sketches, gouache, etc. with a certain antioxidation action and can prolong the storage time of the sketches.
Even though the existing varnish is aqueous and very environment-friendly, formaldehyde and peculiar smell still can be generated, and meanwhile, the varnish does not have the antibacterial and antiviral functions, therefore, intensive research finds that the nano titanium dioxide is safe, non-toxic, stable, long in service life and good in photocatalytic performance, can absorb ultraviolet light and visible light, and can be excited to generate electron-hole, the electron-hole can be migrated to the surface of the nano titanium dioxide and can be interacted with water and oxygen existing on the surface of the nano titanium dioxide to generate OH and O2 with strong oxidizing property and strong reducing property, and harmful gases such as formaldehyde, toluene and TVOC peculiar smell adsorbed on the surface of the nano titanium dioxide can be thoroughly degraded into harmless small molecular compounds by the active groups, so that the antibacterial and bacteriostatic effects can be effectively improved when the nano titanium dioxide is applied to the varnish.
Disclosure of Invention
Aiming at the current situation of the prior art, the invention provides the photocatalytic antibacterial antiviral formaldehyde-removing peculiar smell-removing varnish for realizing the antibacterial and antiviral functions of the latex paint and reducing the release amount of formaldehyde and TVOC in the paint.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a photocatalytic antibacterial antiviral formaldehyde-removing peculiar smell-removing varnish comprises a photocatalytic component and a film-forming component, wherein the weight ratio of the photocatalytic component to the film-forming component is 1:1-9, and the photocatalytic component is prepared by adding acrylic resin into a dispersion of a photocatalyst in an alcohol solution for reaction; the film-forming component comprises an acrylic resin: 25-30%; fluorocarbon resin: 10-15%; antirust pigment: 6-12%; defoaming agent: 0.1-0.2%; pH regulator: 0.2-0.5%; wetting agent: 0.05-0.25%; leveling agent: 0.1-0.2%; dispersing agent: 8-16%; film-forming auxiliary agent: 4-10%; preservative: 3-10%; deionized water: 20-30%.
Preferably, the photocatalyst consists of sodium hexametaphosphate, nano titanium dioxide, a dispersing agent, hydroxyapatite, a silane coupling agent, potassium water glass, water and condensed phosphate according to the following weight percentage.
Preferably, the fluorocarbon resin is one of polyvinyl fluoride, vinylidene fluoride-hexafluoropropylene copolymer and tetrafluoroethylene-vinylidene fluoride-acrylic acid copolymer.
Preferably, the antirust pigment is iron oxide red powder.
Preferably, the pH adjuster is sodium hydroxide.
Preferably, the film forming auxiliary agent is one or two of dodecyl alcohol ester and propylene glycol methyl ether acetate.
Preferably, the preparation method comprises the following steps:
preparing a photocatalytic component:
(1) dispersing the photocatalyst in an alcohol-containing aqueous solution, wherein the concentration of the alcohol-containing aqueous solution is 0.01-3 mol/L;
(2) adding an acrylic resin solution into the dispersion of the photocatalyst in the alcohol-containing aqueous solution under stirring, and controlling the temperature of a dispersion system within 50-100 ℃ in the process of adding the acrylic resin solution;
(3) adjusting the pH of the reaction mixture obtained in the step (2) to be neutral, and then removing water to obtain a photocatalytic component;
preparing a film forming component:
(4) adding acrylic resin into a reaction kettle, adding a pH regulator into the reaction kettle to regulate the pH, fully stirring the mixture by adopting stirring equipment at the rotating speed of 300-500 r/min, and dispersing for 10-20 min after stirring;
(5) adding an antirust pigment, a preservative and deionized water into a reaction kettle, fully stirring the materials by adopting stirring equipment at the rotating speed of 360-500 r/min, dispersing for 15-20 min after stirring, adding a dispersing agent and a defoaming agent, slowly increasing the speed to 500-600 r/min, and stirring for 20-30 min;
(6) adding fluorocarbon resin, a wetting agent and a flatting agent into a reaction kettle, fully stirring the fluorocarbon resin, the wetting agent and the flatting agent by adopting stirring equipment, wherein the rotating speed is 320-500 r/min, and dispersing for 15-20 min after stirring;
(7) adding a film-forming assistant into the reaction kettle, fully stirring the film-forming assistant by adopting stirring equipment at the rotating speed of 300-400 r/min, dispersing for 15-30 min after stirring, and filtering the film-forming assistant by adopting filtering equipment to obtain a finished product;
(8) the photocatalytic antibacterial antiviral formaldehyde-removing peculiar smell-removing varnish is obtained by mixing a photocatalytic component, a film-forming component and a solvent, wherein the weight ratio of the photocatalytic component to the film-forming component is 1: 1-9.
Preferably, the weight ratio of the photocatalytic component to the film-forming component is 1:3 or 1:4 or 1:7 or 1: 8.
Preferably, when the prepared photocatalytic antibacterial antiviral formaldehyde-removing and odor-removing varnish is used for brushing paint, the surface of the brushing paint is coated with a coating layer for preventing light corrosion.
Compared with the prior art, the invention has the advantages that:
by adopting the technical scheme, the photocatalytic antibacterial antiviral formaldehyde-removing peculiar smell-removing varnish prepared by the invention can effectively remove peculiar smell of formaldehyde, toluene and TVOC in the varnish, has a good space purification function, is uniform in photocatalyst dispersion in the formed varnish, is favorable for absorbing ultraviolet rays under the action of nano titanium dioxide, and improves the performances of photocatalytic degradation of harmful gases and sterilization and disinfection of the varnish.
Drawings
FIG. 1 is a flow chart of the preparation of the photocatalytic antibacterial antiviral formaldehyde-removing odor-removing varnish of the present invention.
Detailed Description
As shown in figure 1, the invention discloses a photocatalytic antibacterial antiviral formaldehyde-removing odor-removing varnish.
A photocatalytic antibacterial antiviral formaldehyde-removing peculiar smell-removing varnish comprises a photocatalytic component and a film-forming component, wherein the weight ratio of the photocatalytic component to the film-forming component is 1:1-9, and the photocatalytic component is prepared by adding acrylic resin into a dispersion of a photocatalyst in an alcohol solution for reaction; the film-forming component comprises acrylic resin: 25-30%; fluorocarbon resin: 10-15%; antirust pigment: 6-12%; defoaming agent: 0.1-0.2%; pH regulator: 0.2-0.5%; wetting agent: 0.05-0.25%; leveling agent: 0.1-0.2%; dispersing agent: 8-16%; film-forming auxiliary agent: 4-10%; preservative: 3-10%; deionized water: 20-30%.
The photocatalyst consists of sodium hexametaphosphate, nano titanium dioxide, a dispersing agent, hydroxyapatite, a silane coupling agent, potassium water glass, water and condensed phosphate according to the following weight percentage.
The fluorocarbon resin is one of polyvinyl fluoride, vinylidene fluoride-hexafluoropropylene copolymer and tetrafluoroethylene-vinylidene fluoride-acrylic acid copolymer.
The rust-proof pigment is iron oxide red powder.
The pH regulator is sodium hydroxide.
The film forming assistant is one or two of dodecyl alcohol ester and propylene glycol methyl ether acetate.
The preparation method of the photocatalytic antibacterial antiviral formaldehyde-removing peculiar smell-removing varnish prepared by the invention comprises the following steps:
preparing a photocatalytic component:
(1) dispersing the photocatalyst in an alcohol-containing aqueous solution, wherein the concentration of the alcohol-containing aqueous solution is 0.01-3 mol/L;
(2) adding an acrylic resin solution into the dispersion of the photocatalyst in the alcohol-containing aqueous solution under stirring, and controlling the temperature of a dispersion system within 50-100 ℃ in the process of adding the acrylic resin solution;
(3) adjusting the pH of the reaction mixture obtained in the step (2) to be neutral, and then removing water to obtain a photocatalytic component;
preparing a film forming component:
(4) adding acrylic resin into a reaction kettle, adding a pH regulator into the reaction kettle to regulate the pH, fully stirring the mixture by adopting stirring equipment at the rotating speed of 300-500 r/min, and dispersing for 10-20 min after stirring;
(5) adding an antirust pigment, a preservative and deionized water into a reaction kettle, fully stirring the materials by adopting stirring equipment at the rotating speed of 360-500 r/min, dispersing for 15-20 min after stirring, adding a dispersing agent and a defoaming agent, slowly increasing the speed to 500-600 r/min, and stirring for 20-30 min;
(6) adding fluorocarbon resin, a wetting agent and a flatting agent into a reaction kettle, fully stirring the fluorocarbon resin, the wetting agent and the flatting agent by adopting stirring equipment, wherein the rotating speed is 320-500 r/min, and dispersing for 15-20 min after stirring;
(7) adding a film-forming assistant into the reaction kettle, fully stirring the film-forming assistant by adopting stirring equipment at the rotating speed of 300-400 r/min, dispersing for 15-30 min after stirring, and filtering the film-forming assistant by adopting filtering equipment to obtain a finished product;
(8) the photocatalytic antibacterial antiviral formaldehyde-removing peculiar smell-removing varnish is obtained by mixing a photocatalytic component, a film-forming component and a solvent, wherein the weight ratio of the photocatalytic component to the film-forming component is 1: 1-9.
The weight ratio of the photocatalytic component to the film-forming component is 1:3 or 1:4 or 1:7 or 1: 8.
When the prepared photocatalytic antibacterial antiviral formaldehyde-removing and odor-removing varnish is used for brushing paint, the surface of the brushing paint is coated with a coating layer for preventing light corrosion.
Example 1
Acrylic resin: 30 percent; fluorocarbon resin: 10 percent; antirust pigment: 6 percent; defoaming agent: 0.2 percent; pH regulator: 0.2 percent; wetting agent: 0.25 percent; leveling agent: 0.1 percent; dispersing agent: 16 percent; film-forming auxiliary agent: 4.5 percent; preservative: 10 percent; deionized water: 21 percent.
(1) Dispersing 85g of photocatalyst in 10L of hexanol aqueous solution, wherein the concentration of ethanol-containing aqueous solution is 2.3 mol/L;
(2) under the stirring of the rotating speed of 200rpm, 6.5kg of acrylic resin solution is added into the dispersion of the photocatalyst in the alcohol-containing aqueous solution, wherein the percentage content of the acrylic resin solution is 35 wt%, and the temperature of the dispersion system is controlled within 85 ℃ in the process of adding the acrylic resin solution;
(3) adjusting the pH value of the obtained reaction mixture to be neutral, and drying and removing water to obtain a photocatalytic component;
preparing a film forming component:
(4) adding acrylic resin into a reaction kettle, adding a pH regulator into the reaction kettle to regulate the pH, fully stirring the mixture by adopting stirring equipment at the rotating speed of 300r/min, and dispersing for 20min after stirring;
(5) adding the anti-rust pigment, the preservative and the deionized water into a reaction kettle, fully stirring the mixture by adopting stirring equipment at the rotating speed of 360r/min, dispersing for 20min after stirring, adding the dispersant and the defoamer, slowly increasing the speed to 500r/min, and stirring for 30 min;
(6) adding fluorocarbon resin, a wetting agent and a flatting agent into a reaction kettle, fully stirring the fluorocarbon resin, the wetting agent and the flatting agent by adopting stirring equipment, fully stirring the fluorocarbon resin, the wetting agent and the flatting agent by adopting the stirring equipment at the rotating speed of 320r/min, and dispersing the mixture for 20min after stirring;
(7) adding the film-forming assistant into the reaction kettle, fully stirring the film-forming assistant by adopting stirring equipment at the rotating speed of 300r/min, dispersing the film-forming assistant for 30min after stirring, and filtering the film-forming assistant by adopting filtering equipment to obtain a finished product;
(8) the photocatalytic antibacterial antiviral formaldehyde-removing peculiar smell-removing varnish is obtained by mixing a photocatalytic component, a film-forming component and a solvent, wherein the weight ratio of the photocatalytic component to the film-forming component is 1: 7.
Example 2
Acrylic resin: 28%; amino resin: 12 percent; antirust pigment: 9 percent; defoaming agent: 0.15 percent; pH regulator: 0.35 percent; wetting agent: 0.15 percent; leveling agent: 0.15 percent; dispersing agent: 12 percent; film-forming auxiliary agent: 7 percent; preservative: 7 percent; deionized water: 26 percent.
(1) Dispersing 95g of the photocatalyst in 10L of hexanol aqueous solution, wherein the concentration of ethanol-containing aqueous solution is 1.6 mol/L;
(2) adding 7.5kg of acrylic resin solution into the dispersion of the photocatalyst in the alcohol-containing aqueous solution under the stirring of 200rpm, wherein the percentage content of the acrylic resin solution is 45 wt%, and controlling the temperature of the dispersion system within 88 ℃ in the process of adding the acrylic resin solution;
(3) adjusting the pH value of the obtained reaction mixture to be neutral, and drying and removing water to obtain a photocatalytic component;
preparing a film forming component:
(4) adding acrylic resin into a reaction kettle, adding a pH regulator into the reaction kettle to regulate the pH, fully stirring the mixture by adopting stirring equipment at the rotating speed of 300r/min, and dispersing for 20min after stirring;
(5) adding the anti-rust pigment, the preservative and the deionized water into a reaction kettle, fully stirring the mixture by adopting stirring equipment at the rotating speed of 360r/min, dispersing for 20min after stirring, adding the dispersant and the defoamer, slowly increasing the speed to 500r/min, and stirring for 30 min;
(6) adding fluorocarbon resin, a wetting agent and a flatting agent into a reaction kettle, fully stirring the fluorocarbon resin, the wetting agent and the flatting agent by adopting stirring equipment, fully stirring the fluorocarbon resin, the wetting agent and the flatting agent by adopting the stirring equipment at the rotating speed of 320r/min, and dispersing the mixture for 20min after stirring;
(7) adding the film-forming assistant into the reaction kettle, fully stirring the film-forming assistant by adopting stirring equipment at the rotating speed of 300r/min, dispersing the film-forming assistant for 30min after stirring, and filtering the film-forming assistant by adopting filtering equipment to obtain a finished product;
(8) the photocatalytic antibacterial antiviral formaldehyde-removing peculiar smell-removing varnish is obtained by mixing a photocatalytic component, a film-forming component and a solvent, wherein the weight ratio of the photocatalytic component to the film-forming component is 1: 5.
The technical effects are as follows:
formaldehyde, TVOC removal rate: the test data is obtained by a third-party detection mechanism through testing, the detection basis and the method refer to QB/T2761-2006, and the sample is tested by starting ultraviolet lamp light illumination in a test cabin of 1.5m3, and the specific data is as follows:
the formaldehyde removal rate is as follows:
TVOC removal rate:
the antibacterial and bacteriostatic effects are as follows: the test data is obtained by a third-party detection mechanism through testing, and the detection basis and the detection method refer to a GB/T20944.3-2008 oscillation method; the method specifically comprises the following steps:
it can not be seen from the above table that the photocatalytic antibacterial antiviral formaldehyde-removing odor-removing varnish prepared by the preparation method of the invention can effectively remove formaldehyde and TVOC in the coating, the formaldehyde removal rate is 95.2%, the TVOC removal rate is 93.4%, the photocatalytic antibacterial formaldehyde-removing odor-removing varnish has good space-purifying function, and can avoid photo-corrosion under the action of the coating layer, so that the coating can be used on wall surfaces in various occasions such as indoor and outdoor, and the latex paint of the invention has good antibacterial and bacteriostatic effects, the inhibition rates of Escherichia coli, Staphylococcus aureus and Candida albicans reach 99%, the photocatalyst in the formed varnish is uniformly dispersed, and the nano titanium dioxide is beneficial to absorbing ultraviolet rays, and the photocatalytic degradation of harmful gases and the sterilization and disinfection performance of the varnish are improved.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. The photocatalytic antibacterial antiviral formaldehyde-removing and odor-removing varnish is characterized by comprising a photocatalytic component and a film-forming component, wherein the weight ratio of the photocatalytic component to the film-forming component is 1:1-9, and the photocatalytic component is prepared by adding acrylic resin into a dispersion of a photocatalyst in an alcohol solution for reaction; the film-forming component comprises an acrylic resin: 25-30%; fluorocarbon resin: 10-15%; antirust pigment: 6-12%; defoaming agent: 0.1-0.2%; pH regulator: 0.2-0.5%; wetting agent: 0.05-0.25%; leveling agent: 0.1-0.2%; dispersing agent: 8-16%; film-forming auxiliary agent: 4-10%; preservative: 3-10%; deionized water: 20-30%.
2. The photocatalytic antibacterial antiviral formaldehyde-removing odor-removing varnish according to claim 1, wherein the photocatalyst comprises sodium hexametaphosphate, nano titanium dioxide, a dispersing agent, hydroxyapatite, a silane coupling agent, potassium water glass, water and condensed phosphate in the following weight percentage.
3. The photocatalytic antibacterial antiviral formaldehyde-removing odor-removing varnish according to claim 2, wherein the fluorocarbon resin is one of polyvinyl fluoride, vinylidene fluoride-hexafluoropropylene copolymer, tetrafluoroethylene-vinylidene fluoride-acrylic acid copolymer.
4. A photocatalytic antibacterial antiviral formaldehyde-removing odor-removing varnish according to claim 3, wherein said rust-preventive pigment is iron oxide red powder.
5. A photocatalytic antibacterial antiviral formaldehyde-and odor-removing varnish according to claim 4, wherein said pH regulator is sodium hydroxide.
6. A photocatalytic antiseptic formaldehyde-removing odor-removing varnish as set forth in claim 5, wherein said film-forming aid is one or both of lauryl alcohol ester and propylene glycol methyl ether acetate.
7. The photocatalytic antibacterial antiviral formaldehyde-removing odor-removing varnish according to claim 6, which is prepared by the following steps:
preparing a photocatalytic component:
(1) dispersing the photocatalyst in an alcohol-containing aqueous solution, wherein the concentration of the alcohol-containing aqueous solution is 0.01-3 mol/L;
(2) adding an acrylic resin solution into the dispersion of the photocatalyst in the alcohol-containing aqueous solution under stirring, and controlling the temperature of a dispersion system within 50-100 ℃ in the process of adding the acrylic resin solution;
(3) adjusting the pH of the reaction mixture obtained in the step (2) to be neutral, and then removing water to obtain a photocatalytic component;
preparing a film forming component:
(4) adding acrylic resin into a reaction kettle, adding a pH regulator into the reaction kettle to regulate the pH, fully stirring the mixture by adopting stirring equipment at the rotating speed of 300-500 r/min, and dispersing for 10-20 min after stirring;
(5) adding an antirust pigment, a preservative and deionized water into a reaction kettle, fully stirring the materials by adopting stirring equipment at the rotating speed of 360-500 r/min, dispersing for 15-20 min after stirring, adding a dispersing agent and a defoaming agent, slowly increasing the speed to 500-600 r/min, and stirring for 20-30 min;
(6) adding fluorocarbon resin, a wetting agent and a flatting agent into a reaction kettle, fully stirring the fluorocarbon resin, the wetting agent and the flatting agent by adopting stirring equipment, wherein the rotating speed is 320-500 r/min, and dispersing for 15-20 min after stirring;
(7) adding a film-forming assistant into the reaction kettle, fully stirring the film-forming assistant by adopting stirring equipment at the rotating speed of 300-400 r/min, dispersing for 15-30 min after stirring, and filtering the film-forming assistant by adopting filtering equipment to obtain a finished product;
(8) the photocatalytic antibacterial antiviral formaldehyde-removing peculiar smell-removing varnish is obtained by mixing a photocatalytic component, a film-forming component and a solvent, wherein the weight ratio of the photocatalytic component to the film-forming component is 1: 1-9.
8. The photocatalytic antibacterial antiviral formaldehyde-removing odor-removing varnish according to claim 7, wherein the weight ratio of the photocatalytic component to the film-forming component is 1:3 or 1:4 or 1:7 or 1: 8.
9. The photocatalytic antibacterial antiviral formaldehyde-odor removing varnish according to claim 8, wherein the photocatalytic antibacterial formaldehyde-odor removing varnish is coated with a coating layer to prevent photo-corrosion during painting.
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Application publication date: 20210518 |