CN113698824A - Full-spectrum response type sterilization and purification coating and preparation method thereof - Google Patents
Full-spectrum response type sterilization and purification coating and preparation method thereof Download PDFInfo
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- CN113698824A CN113698824A CN202110931170.1A CN202110931170A CN113698824A CN 113698824 A CN113698824 A CN 113698824A CN 202110931170 A CN202110931170 A CN 202110931170A CN 113698824 A CN113698824 A CN 113698824A
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- 238000000576 coating method Methods 0.000 title claims abstract description 63
- 239000011248 coating agent Substances 0.000 title claims abstract description 62
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 45
- 230000001954 sterilising effect Effects 0.000 title claims abstract description 32
- 230000004044 response Effects 0.000 title claims abstract description 30
- 238000000746 purification Methods 0.000 title claims abstract description 28
- 238000001228 spectrum Methods 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 70
- -1 compound quaternary ammonium salt Chemical class 0.000 claims abstract description 37
- 239000011259 mixed solution Substances 0.000 claims abstract description 24
- 239000000080 wetting agent Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000008367 deionised water Substances 0.000 claims abstract description 16
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 13
- 239000002562 thickening agent Substances 0.000 claims abstract description 13
- 239000011347 resin Substances 0.000 claims abstract description 12
- 229920005989 resin Polymers 0.000 claims abstract description 12
- 239000000243 solution Substances 0.000 claims abstract description 12
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 10
- 238000000227 grinding Methods 0.000 claims abstract description 8
- 239000002270 dispersing agent Substances 0.000 claims abstract description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 34
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 28
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims description 14
- 239000004408 titanium dioxide Substances 0.000 claims description 14
- 229910052697 platinum Inorganic materials 0.000 claims description 13
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 11
- 239000002131 composite material Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 6
- JBIROUFYLSSYDX-UHFFFAOYSA-M benzododecinium chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 JBIROUFYLSSYDX-UHFFFAOYSA-M 0.000 claims description 5
- UMGXUWVIJIQANV-UHFFFAOYSA-M didecyl(dimethyl)azanium;bromide Chemical compound [Br-].CCCCCCCCCC[N+](C)(C)CCCCCCCCCC UMGXUWVIJIQANV-UHFFFAOYSA-M 0.000 claims description 5
- MGIYRDNGCNKGJU-UHFFFAOYSA-N isothiazolinone Chemical compound O=C1C=CSN1 MGIYRDNGCNKGJU-UHFFFAOYSA-N 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 4
- RUPBZQFQVRMKDG-UHFFFAOYSA-M Didecyldimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCC[N+](C)(C)CCCCCCCCCC RUPBZQFQVRMKDG-UHFFFAOYSA-M 0.000 claims description 4
- 229960004670 didecyldimethylammonium chloride Drugs 0.000 claims description 4
- GQOKIYDTHHZSCJ-UHFFFAOYSA-M dimethyl-bis(prop-2-enyl)azanium;chloride Chemical compound [Cl-].C=CC[N+](C)(C)CC=C GQOKIYDTHHZSCJ-UHFFFAOYSA-M 0.000 claims description 4
- 239000000178 monomer Substances 0.000 claims description 4
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 3
- QAKLCUQMLFFUHY-UHFFFAOYSA-N [N].[Pt] Chemical compound [N].[Pt] QAKLCUQMLFFUHY-UHFFFAOYSA-N 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 3
- 230000001699 photocatalysis Effects 0.000 description 16
- 208000007407 African swine fever Diseases 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 8
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- 238000006243 chemical reaction Methods 0.000 description 5
- 241000711573 Coronaviridae Species 0.000 description 4
- 241000710198 Foot-and-mouth disease virus Species 0.000 description 4
- 238000013329 compounding Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000013032 photocatalytic reaction Methods 0.000 description 4
- 241000712461 unidentified influenza virus Species 0.000 description 4
- 241000712083 Canine morbillivirus Species 0.000 description 3
- 241000700605 Viruses Species 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 230000004913 activation Effects 0.000 description 3
- 238000009395 breeding Methods 0.000 description 3
- 230000001488 breeding effect Effects 0.000 description 3
- 239000013530 defoamer Substances 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 239000003623 enhancer Substances 0.000 description 3
- GAWWVVGZMLGEIW-GNNYBVKZSA-L zinc ricinoleate Chemical compound [Zn+2].CCCCCC[C@@H](O)C\C=C/CCCCCCCC([O-])=O.CCCCCC[C@@H](O)C\C=C/CCCCCCCC([O-])=O GAWWVVGZMLGEIW-GNNYBVKZSA-L 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 2
- 208000007212 Foot-and-Mouth Disease Diseases 0.000 description 2
- 206010069767 H1N1 influenza Diseases 0.000 description 2
- 208000002979 Influenza in Birds Diseases 0.000 description 2
- 208000009620 Orthomyxoviridae Infections Diseases 0.000 description 2
- 241001135989 Porcine reproductive and respiratory syndrome virus Species 0.000 description 2
- 241000725681 Swine influenza virus Species 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 206010064097 avian influenza Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000004332 deodorization Methods 0.000 description 2
- 238000003618 dip coating Methods 0.000 description 2
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- 239000003973 paint Substances 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 238000007146 photocatalysis Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 201000010740 swine influenza Diseases 0.000 description 2
- 241000588724 Escherichia coli Species 0.000 description 1
- 208000005342 Porcine Reproductive and Respiratory Syndrome Diseases 0.000 description 1
- 241000191967 Staphylococcus aureus Species 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- GLAKNHGQBRSLIO-UHFFFAOYSA-N azane;prop-1-ene Chemical compound N.CC=C GLAKNHGQBRSLIO-UHFFFAOYSA-N 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- DHNRXBZYEKSXIM-UHFFFAOYSA-N chloromethylisothiazolinone Chemical compound CN1SC(Cl)=CC1=O DHNRXBZYEKSXIM-UHFFFAOYSA-N 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 208000032625 disorder of ear Diseases 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000002070 germicidal effect Effects 0.000 description 1
- 239000003906 humectant Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000002458 infectious effect Effects 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- BEGLCMHJXHIJLR-UHFFFAOYSA-N methylisothiazolinone Chemical compound CN1SC=CC1=O BEGLCMHJXHIJLR-UHFFFAOYSA-N 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001443 photoexcitation Effects 0.000 description 1
- 150000003057 platinum Chemical class 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000036561 sun exposure Effects 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Plant Pathology (AREA)
- Catalysts (AREA)
Abstract
The invention provides a full-spectrum response type sterilization and purification coating and a preparation method thereof, wherein the coating comprises the following components in parts by weight: 1-3 parts of nitrogen-platinum co-doped nano titanium dioxide and 0.5-1 part of compound quaternary ammonium salt. The method may comprise the steps of: uniformly mixing nitrogen-platinum co-doped nano titanium dioxide with deionized water to obtain a nano titanium dioxide solution; uniformly mixing a wetting agent, a dispersing agent, a compound quaternary ammonium salt and deionized water to obtain a first mixed solution; grinding the first mixed solution to obtain a second mixed solution; and mixing the nano titanium dioxide solution with the second mixed solution while stirring, adding a defoaming agent, a wetting agent, a thickening agent, resin and a film-forming aid, and adjusting the pH to 6-8 to obtain the coating. The coating of the invention can play the roles of strong disinfection, sterilization and purification under any light source and no light condition, and is a full-spectrum response type coating.
Description
Technical Field
The invention relates to the technical field of preparation of sterilization and purification coatings, in particular to a full-spectrum response type sterilization and purification coating and a preparation method thereof.
Background
TiO2The photocatalytic material has the characteristics of high activity, low price, stable property and the like, and is a valuable material for development and application in the aspects of environmental purification, water body treatment and the like in the 21 st century. However, the forbidden bandwidth of the anatase crystal titanium dioxide with higher activity is about 3.2eV, and only the incident light energy with lambda less than or equal to 387.5nm can ensure that the anatase crystal titanium dioxide is excited to generate active e-And h+So that the practical application of the active titanium dioxide is greatly limited, and light with a specific frequency needs to be applied to enable TiO to be coated2A photocatalytic reaction occurs.
In addition, the synthesized titanium dioxide has low photocatalytic efficiency for pollutants due to high recombination rate of electrons and holes generated by photoexcitation.
Disclosure of Invention
In view of the deficiencies in the prior art, it is an object of the present invention to address one or more of the problems in the prior art as set forth above. For example, an object of the present invention is to provide a coating material which has high photocatalytic efficiency and a short photocatalytic activation startup period and can be sterilized, disinfected, and purified under any light source and no light conditions.
The invention provides a full-spectrum response type sterilization and purification coating which comprises the following components in parts by weight: 1-3 parts of doped nano titanium dioxide and 0.5-1 part of composite quaternary ammonium salt, wherein the doped nano titanium dioxide is a mixture of nitrogen-doped nano titanium dioxide and platinum-doped nano titanium dioxide, or nitrogen-platinum-co-doped nano titanium dioxide, or a mixture of at least one of the nitrogen-doped nano titanium dioxide and the platinum-doped nano titanium dioxide and the nitrogen-platinum-co-doped nano titanium dioxide.
The invention also provides a preparation method of the full-spectrum response type sterilization and purification coating, which comprises the following steps: uniformly mixing nitrogen-platinum co-doped nano titanium dioxide with deionized water to obtain a nano titanium dioxide solution; uniformly mixing a wetting agent, a dispersing agent, a compound quaternary ammonium salt and deionized water to obtain a first mixed solution; grinding the first mixed solution to obtain a second mixed solution; and mixing the nano titanium dioxide solution with the second mixed solution while stirring, adding a defoaming agent, a wetting agent, a thickening agent, resin and a film-forming aid, and adjusting the pH to 6-8 to obtain the coating.
Compared with the prior art, the beneficial effects of the invention at least comprise at least one of the following:
(1) the coating of the invention can play the roles of strong disinfection, sterilization and purification under any light source and no light condition, and is a full-spectrum response type coating.
(2) The coating has high photocatalytic efficiency which is more than 8 times higher than that of the common photocatalytic materials sold in the market.
(3) The start-up period of the coating is short, and compared with the traditional photocatalytic start-up period which is close to 2 hours for the nano titanium dioxide, the photocatalytic activation start-up period of the coating can play a normal sterilization and disinfection function only within 5-10 minutes.
(4) The coating has the function of killing African swine fever, avian influenza, swine influenza, foot and mouth disease, blue ear disease, escherichia coli, staphylococcus aureus and the like, can effectively decompose various harmful gases in livestock breeding places, relieves the odor and peculiar smell of the breeding places, and improves the air quality of the breeding places.
(5) The coating of the invention can keep the continuous and long-acting sterilization and disinfection function for more than 30 days.
(6) The preparation method is simple and is suitable for industrial production.
Detailed Description
Hereinafter, the full spectrum response type germicidal decontamination coating material and the method for preparing the same according to the present invention will be described in detail with reference to the exemplary embodiments.
Specifically, the common nano titanium dioxide generally has a photoelectric catalytic effect in an ultraviolet light band or a small amount of visible light bands, and the nano titanium dioxide is doped and modified by using nitrogen and platinum with specific contents, so that the response range and the response speed of the modified titanium dioxide in various light source bands can be improved, and full-spectrum quick response is realized. And the photocatalytic efficiency of the modified titanium dioxide is more than 8 times higher than that of the common photocatalytic technology, compared with the traditional nano titanium dioxide which is close to the photocatalytic start-up period of 2 hours, the start-up period of the photocatalytic activation of the modified nano titanium dioxide can be just 5-10 minutes to play the normal sterilization and disinfection functions, and the start-up time is short.
The core disinfection function of the coating is constructed by compounding the modified nano titanium dioxide and the compound quaternary ammonium salt together, the photoelectrocatalysis reaction disinfection and the physicochemical disinfection of the quaternary ammonium salt are combined, and the coating can perform collective cooperation and long-term and lasting disinfection and disinfection under the condition of no light. In addition, the quaternary ammonium salt used in the invention is a compound quaternary ammonium salt, and compared with a single quaternary ammonium salt component, the compound quaternary ammonium salt can collectively play a broad-spectrum sterilization and disinfection role in a wider range, can kill more viruses and bacteria, has higher efficiency and higher speed, and can sterilize and disinfect the coating under the condition of no light. For example, it can continuously kill infectious viruses and bacteria such as African swine fever, swine influenza, avian influenza, porcine reproductive and respiratory syndrome, and foot and mouth disease.
The invention provides a spectral response type sterilization and purification coating which comprises the following components in parts by weight: 1 to 3 parts of doped nano titanium dioxide and 0.5 to 1 part of composite quaternary ammonium salt. The doped nano titanium dioxide can be a mixture of nitrogen-doped nano titanium dioxide and platinum-doped nano titanium dioxide, or the doped nano titanium dioxide can be nitrogen-platinum co-doped nano titanium dioxide, or the doped nano titanium dioxide can be a mixture of at least one of the nitrogen-doped nano titanium dioxide and the platinum-doped nano titanium dioxide and the nitrogen-platinum co-doped nano titanium dioxide. Namely, the doped nano titanium dioxide at least should be doped with nitrogen element and platinum element.
The spectral response type sterilization and purification coating contains some additives essential for forming the coating. For example, solvents, film forming agents, and the like, the solvent may be water or oil. In addition, some auxiliary agents which can enhance the performance of the coating can be contained in the coating, such as defoaming agents, wetting agents, thickening agents and the like.
By compounding 1 to 3 parts of doped nano titanium dioxide and 0.5 to 1 part of compound quaternary ammonium salt, the effects of high-efficiency sterilization and disinfection can be achieved. If the proportion of the doped nano titanium dioxide and the composite quaternary ammonium salt is not in the range, the effects of sterilization and mould are weakened, and the time of sterilization and disinfection functions is shortened. Further, the coating can comprise 1.5 to 2.6 parts of doped nano titanium dioxide and 0.7 to 0.9 part of composite quaternary ammonium salt. Furthermore, the coating can comprise 2.4 parts of doped nano titanium dioxide and 0.8 part of composite quaternary ammonium salt, and the antibacterial and sterilization efficiency is higher than that of other components by more than 5% on average under the proportional condition.
Further, the influence of doping cost and photocatalytic effect is comprehensively considered, and the weight ratio of the nitrogen-doped titanium dioxide to the platinum-doped titanium dioxide can be (6-8) to (2-4). Preferentially, the ratio of the components in parts by weight can be 7:3, and the composition ratio can further save the cost while the photocatalytic effect is the best.
Further, the full-spectrum response type sterilization and purification coating can also comprise the following components in parts by weight: 0.5 to 1 portion of defoaming agent, 4 to 6 portions of wetting agent, 0.3 to 3 portions of thickening agent, 72 to 86.7 portions of resin, 3 to 9 portions of film forming additive and 5 to 8 portions of deionized water. For example, 0.7 parts of defoamer, 5.2 parts of wetting agent content, 2.2 parts of thickener, 81 parts of resin content, 5 parts of film forming aid and 3 parts of deionized water. The defoaming agent in the coating component can quickly eliminate bubbles in liquid, and the wetting agent can assist dissolution, level and improve film-forming performance. The wetting agent can play a role in dissolving aid and dispersion, and meanwhile, the effective components of the wetting agent can improve the deodorization function of the coating after the coating is solidified into a film. The thickening agent can adjust the liquid viscosity of the coating and enhance the application property of the liquid coating, and is convenient for spraying, brushing, rolling, dip-coating and other applications. The resin is a key film forming substance in the coating formula, and can effectively mix and disperse the compound quaternary ammonium salt, solidify the compound quaternary ammonium salt and wrap the compound quaternary ammonium salt in a film to realize high-efficiency film forming adhesion of the compound quaternary ammonium salt, so that the compound quaternary ammonium salt can realize long-acting sterilization and disinfection effects. The defoamer, wetting agent, thickener, resin, and coalescent can all be conventional commercially available products. For example, the defoamer can be selected from BickBYK 016, the humectant can be selected from Wiego SORB A30, the thickener can be selected from German Wiego ViscoPlus 3010, and the resin can be selected from Pasteur acrylic emulsion
proof 1108S AP, film forming auxiliary agent can be Istman Eastman Optifilm Enhancer 300.
The coating obtained by the proportion range can effectively permeate into the surface of the base material after being coated on the surface of the base material, has good curing and film-forming properties, has adhesive force of more than 1 grade, has certain waterproofness after being formed into a film, and can exert the functions of deodorization and peculiar smell removal of the sterilizing disinfectant to the maximum extent.
Furthermore, the doped titanium dioxide is anatase titanium dioxide, and the particle size of the doped nano titanium dioxide is 15 nm-20 nm. The particle size of the doped nano titanium dioxide can affect the reaction efficiency of photocatalysis. Under the particle size of 15 nm-20 nm, the photoproduction electrons and holes can obtain larger migration rate, and the specific surface area is larger, thereby being beneficial to improving the photocatalytic reaction rate.
Further, the content (mass fraction ratio) of the doped nitrogen in the nano titanium dioxide may be 0.2% to 1%, for example, the content of the doped nitrogen may be 0.35% to 0.8%, for example, 0.52. The content (mass fraction ratio) of platinum doped on the nano titanium dioxide can be 0.2-0.5%. For example, the content of the doped modified platinum may be 0.25% to 0.42%, for example, 0.35%. In the range of 0.2-1% of doped nitrogen content and 0.2-0.5% of platinum content, nitrogen and platinum can realize wide coverage on the surface of titanium dioxide, and if the content is low, the coverage area is small, so that the efficiency of the photoelectrocatalysis reaction is influenced; if the content is too high, the photoelectrocatalysis reaction efficiency is also affected, and the photocatalysis reaction efficiency is slowed down. If the mass ratio of nitrogen is less than 0.2% and the mass ratio of platinum is less than 0.2%, the photocatalytic reaction efficiency is reduced by more than 5% compared with the content in the set range; if the mass ratio of nitrogen is more than 1% and the mass ratio of platinum is more than 0.5%, the photocatalytic reaction efficiency is reduced by more than 3% compared with the content in the above-mentioned range.
Further, the compound quaternary ammonium salt is single-chain compound quaternary ammonium salt, double-chain compound quaternary ammonium salt or multi-chain compound quaternary ammonium salt. The compound quaternary ammonium salt can comprise a mixture of more than two of dodecyl dimethyl benzyl ammonium chloride, didecyl dimethyl ammonium bromide, didecyl dimethyl ammonium chloride, dimethyl diallyl ammonium chloride and nonionic monomer acrylamide. Further, the compound quaternary ammonium salt also comprises one or a combination of the polyzium chloride or the isothiazolinone. The compound quaternary ammonium salt can be a mixture obtained by compounding more than two of dodecyl dimethyl benzyl ammonium chloride, didecyl dimethyl ammonium bromide, didecyl dimethyl ammonium chloride, dimethyl diallyl ammonium chloride and nonionic monomer acrylamide with one or more of polysaccharyl ammonium chloride or isothiazolinone. The mixture obtained by compounding can achieve high-efficiency sterilization effect. The isothiazolinone may be 5-chloro-2-methyl-4-isothiazolin-3-one (CMI) and/or 2-methyl-4-isothiazolin-3-one (MI). The components in the compound quaternary ammonium salt can be adjusted according to the field use condition.
The invention also provides a preparation method of the full-spectrum response type sterilization and purification coating, which comprises the following steps:
and S01, uniformly mixing the doped nano titanium dioxide with deionized water to obtain a nano titanium dioxide solution.
S02, uniformly mixing the wetting agent, the dispersing agent, the compound quaternary ammonium salt and the deionized water to obtain a first mixed solution.
And S03, grinding the first mixed solution to obtain a second mixed solution.
And S04, mixing the nano titanium dioxide solution with the second mixed solution while stirring, adding a defoaming agent, a wetting agent, a thickening agent, resin and a film-forming aid, and adjusting the pH value to 6-8 to obtain the coating.
The amount of the wetting agent added in steps S02 and S04 may be added according to the actual application, and the content of the wetting agent in the paint is 4 to 6 parts.
Further, the method specifically includes:
s100, slowly adding the doped and modified titanium dioxide powder into deionized water, and uniformly stirring at the speed of 150-250 r/min, for example, stirring at the speed of 200-min for 5 min to obtain a liquid nano titanium dioxide solution.
S200, stirring the deionized water at the speed of 150-250 revolutions per minute (for example, 200 revolutions per minute), sequentially adding the wetting agent, the dispersing agent and the compound quaternary ammonium salt, and continuously stirring and uniformly mixing for example, 5 minutes to obtain a first mixed solution.
And S300, pouring the first mixed solution into a grinding machine, and grinding to the fineness of 15-20 nm to obtain a second mixed solution.
S400, pouring the second mixed solution into a stirrer, slowly pouring the nano titanium dioxide solution into the stirrer under the stirring state of 150-250 revolutions per minute (for example, 200 revolutions per minute), adding a thickening agent, resin, a film-forming aid, a defoaming agent and a stabilizing agent, and finally adjusting the pH value to 6-8 to obtain the finished liquid coating.
Further, the coating comprises, by weight, 1 to 3 parts of doped nano titanium dioxide, 0.5 to 1 part of compound quaternary ammonium salt, 0.5 to 1 part of defoaming agent, 4 to 6 parts of wetting agent, 0.3 to 3 parts of thickening agent, 72 to 86.7 parts of resin, 3 to 9 parts of film-forming assistant and 5 to 8 parts of deionized water.
Furthermore, the doped titanium dioxide is anatase titanium dioxide, and the particle size of the doped nano titanium dioxide is 15 nm-20 nm.
Furthermore, the mass percentage of nitrogen in the doped nano titanium dioxide can be 0.2-1%, and the mass percentage of platinum can be 0.2-0.5%.
Further, the compound quaternary ammonium salt is single-chain compound quaternary ammonium salt, double-chain compound quaternary ammonium salt or multi-chain compound quaternary ammonium salt.
Further, the compound quaternary ammonium salt comprises a mixture of more than two of dodecyl dimethyl benzyl ammonium chloride, didecyl dimethyl ammonium bromide, didecyl dimethyl ammonium chloride, dimethyl diallyl ammonium chloride and nonionic monomer propylene ammonia.
Further, the compound quaternary ammonium salt also comprises one or a combination of the polyzium chloride and the isothiazolinone.
The coating or the coating obtained by the preparation method can permeate into the surfaces of various base materials after atomization spraying, brush coating, roller coating or dip coating, and forms a coating film through natural drying.
In order that the above-described exemplary embodiments of the invention may be better understood, further description thereof with reference to specific examples is provided below.
Example 1
The full-spectrum response type sterilization and purification coating comprises the following components in parts by weight: 2 parts of doped nano titanium dioxide, 0.8 part of compound quaternary ammonium salt, 0.7 part of Bikk BYK016 content, 5 parts of Yingchuo TEGO SORB A30 content, 2.1 parts of German Yingchuo TEGO ViscoPlus 3010 content, and basf acrylic emulsion
75 parts of proof 1108S AP, 6 parts of Eastman optifilm Enhancer 300 and 6 parts of deionized water, wherein the doped nano titanium dioxide is a mixture of nitrogen doping and platinum doping, the mass ratio of nitrogen is 0.5%, the mass ratio of platinum is 0.3%, and the weight ratio of the nitrogen doping titanium dioxide to the platinum doping titanium dioxide is 7: 3. The compound quaternary ammonium salt is compounded by dodecyl dimethyl benzyl ammonium chloride, didecyl dimethyl ammonium bromide and polysaccharum chloride.
The preparation method comprises the following steps:
step 1, slowly adding nitrogen-doped and platinum-doped titanium dioxide powder into deionized water, and uniformly stirring at the speed of 200 revolutions per minute to obtain a liquid nano titanium dioxide solution.
And 2, stirring the deionized water at the speed of 200 revolutions per minute, sequentially adding the winning TEGO SORB A30 and the composite quaternary ammonium salt, and continuously stirring and uniformly mixing to obtain a first liquid mixed solution.
And 3, pouring the first mixed solution into a grinding machine, and grinding to the fineness of 15-20 nm to obtain a second mixed solution.
Step 4, pouring the second mixed solution into a stirrer, slowly pouring the nano titanium dioxide solution into the stirrer under the stirring state of 200 revolutions per minute, and then adding the German winning TEGO Visco plus 3010 and the Basff acrylic emulsion
proof 1108S AP, Eastman Optifilm Enhancer 300, ByK016, TEGO SORB A30, and finally adjusting the pH value to 7, thereby obtaining the finished liquid coating.
The full-spectrum response type sterilization and purification coating described in example 1 is used for killing various viruses, and the detection standards are checked according to the sterilization technical specifications (2002), and the results are as follows:
1. the results of the swine influenza virus H3N3 test are shown in Table 1.
TABLE 1 Swine influenza Virus H3N3 test results
2. The detection results of porcine reproductive and respiratory syndrome virus NADC30 are shown in Table 2.
TABLE 2 detection results of porcine reproductive and respiratory syndrome virus NADC30
3. The CDV assay results are shown in Table 3.
TABLE 3 CDV assay results for canine distemper virus
4. The results of the detection of avian influenza virus H7N9 are shown in Table 4.
TABLE 4 avian influenza virus H7N9 test results
5. The results of the avian influenza virus H5N1 test are shown in Table 5.
TABLE 5 avian influenza Virus H5N1 test results
6. The results of the FMDV assay are shown in Table 6.
TABLE 6 foot and mouth disease Virus FMDV assay results
7. The results of the 30-day long-term killing assay for African Swine Fever (ASFV) are shown in Table 7 and Table 8. Wherein, Table 8 shows the results of the measurement after 30 days of solar irradiation.
TABLE 7 African Swine Fever (ASFV) test results
Remarking: paint application on glass carriers
TABLE 8 African Swine Fever (ASFV) test results
Remarking: test after 30 days of sun exposure of the coating on a glass support
The full-spectrum response type sterilization and purification coating obtained in the example 1 is used for killing coronavirus HCOV-229E, a 480nm common illumination light source is selected in a visible light range of 380nm-780nm, and the killing rate of the coronavirus HCOV-229E is 99.85% within 120 minutes; in an ultraviolet region less than 380nm, an ultraviolet light source of 250nm is selected, and the killing rate of coronavirus HCOV-229E is 99.99% within 10 minutes; in the infrared region of more than 780nm, an infrared light source of 1000nm is selected, and the killing rate of coronavirus HCOV-229E is 99.60% in 120 minutes. The results can show that the full-spectrum response type sterilization and purification coating can sterilize under various light source wave band conditions.
Although the present invention has been described above in connection with exemplary embodiments, it will be apparent to those skilled in the art that various modifications and changes may be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The full-spectrum response type sterilization and purification coating is characterized by comprising the following components in parts by weight:
1-3 parts of doped nano titanium dioxide and 0.5-1 part of composite quaternary ammonium salt, wherein the doped nano titanium dioxide is a mixture of nitrogen-doped nano titanium dioxide and platinum-doped nano titanium dioxide, or nitrogen-platinum-co-doped nano titanium dioxide, or a mixture of at least one of the nitrogen-doped nano titanium dioxide and the platinum-doped nano titanium dioxide and the nitrogen-platinum-co-doped nano titanium dioxide.
2. The full-spectrum response type sterilization and purification coating of claim 1, further comprising, in parts by weight:
0.5-1 part of defoaming agent, 4-6 parts of wetting agent, 0.3-3 parts of thickening agent, 72-86.7 parts of resin, 3-9 parts of film-forming assistant and 5-8 parts of deionized water.
3. The full-spectrum response type sterilization and purification coating as claimed in claim 1 or 2, wherein the doped titanium dioxide is anatase type titanium dioxide, and the particle size of the doped nano titanium dioxide is 15 nm-20 nm.
4. The full-spectrum response type sterilization and purification coating as claimed in claim 1 or 2, wherein the mass percentage of nitrogen in the doped nano titanium dioxide is 0.2% -1%, and the mass percentage of platinum is 0.2% -0.5%.
5. The full-spectrum response type sterilization and purification coating as claimed in claim 1 or 2, wherein the compound quaternary ammonium salt is a single-chain compound quaternary ammonium salt, a double-chain compound quaternary ammonium salt or a multi-chain compound quaternary ammonium salt.
6. The full-spectrum response type sterilization and purification coating as claimed in claim 5, wherein the compound quaternary ammonium salt comprises a mixture of two or more of dodecyl dimethyl benzyl ammonium chloride, didecyl dimethyl ammonium bromide, didecyl dimethyl ammonium chloride, dimethyl diallyl ammonium chloride and nonionic monomer acrylamide.
7. The full-spectrum response type sterilization and purification coating of claim 6, wherein the composite quaternary ammonium salt further comprises one or a combination of polyaluminum chloride and isothiazolinone.
8. The preparation method of the full-spectrum response type sterilization and purification coating as claimed in any one of claims 1 to 6, comprising the following steps:
uniformly mixing the doped nano titanium dioxide with deionized water to obtain a nano titanium dioxide solution;
uniformly mixing a wetting agent, a dispersing agent and a compound quaternary ammonium salt to obtain a first mixed solution;
grinding the first mixed solution to obtain a second mixed solution;
and mixing the nano titanium dioxide solution with the second mixed solution while stirring, adding a defoaming agent, a wetting agent, a thickening agent, resin and a film-forming aid, and adjusting the pH to 6-8 to obtain the coating.
9. The preparation method of the full-spectrum response type sterilization and purification coating as claimed in claim 8, wherein the particle size of the doped nano titanium dioxide is 15 nm-20 nm.
10. The preparation method of the full-spectrum response type sterilization and purification coating as claimed in claim 8 or 9, wherein the mass ratio of nitrogen in the doped nano titanium dioxide is 0.2% -1%, and the mass ratio of platinum is 0.2% -0.5%.
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