CN112409836A - Photocatalytic antibacterial coating and preparation device thereof - Google Patents
Photocatalytic antibacterial coating and preparation device thereof Download PDFInfo
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- CN112409836A CN112409836A CN202011526325.5A CN202011526325A CN112409836A CN 112409836 A CN112409836 A CN 112409836A CN 202011526325 A CN202011526325 A CN 202011526325A CN 112409836 A CN112409836 A CN 112409836A
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- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/12—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation being performed after the application
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/14—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation involving heating or cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
- B05D3/0272—After-treatment with ovens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
- B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
- B05D3/065—After-treatment
- B05D3/067—Curing or cross-linking the coating
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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
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
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- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
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- 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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
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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
- C08K2201/005—Additives being defined by their particle size in general
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Abstract
The invention discloses a photocatalytic antibacterial coating and a preparation device thereof, comprising: 1-10% of silver-loaded nano titanium dioxide by mass, 5-10% of surfactant by mass, 30-70% of scratch-resistant agent by mass and 20-60% of solvent by mass, pre-dispersing the silver-loaded nano titanium dioxide and the surfactant in the solvent, and then mixing the dispersion liquid obtained by pre-dispersion with the scratch-resistant agent and the solvent to obtain an antibacterial liquid; and filtering the agglomerated nano particles in the antibacterial liquid, coating the antibacterial liquid on the surface of the base material by using an MG roller, removing redundant slurry on the surface by using a scraper, and carrying out thermocuring and UV photocuring to obtain the antibacterial coating. Through the mode, the coating contains the silver-loaded titanium dioxide nanoparticles, so that the coating not only has the functions of sterilization, virus resistance, organic matter degradation and self-cleaning of the nano titanium dioxide under visible light and ultraviolet light, but also has the functions of strong antibacterial and virus killing of the nano silver under the condition of no illumination.
Description
Technical Field
The invention relates to a photocatalytic antibacterial coating and a preparation device thereof.
Background
Photocatalytic antibacterial is an emerging antibacterial method in recent years. Nano titanium dioxide (TiO)2) As a typical representative of the photocatalytic material, the photocatalyst has the advantages of low price, no toxicity, good stability, durable antibacterial effect, air purification, self-cleaning and the like, and the optical performance of the film is remarkably reduced due to excessive addition of titanium dioxide, so that the haze caused by the addition of the titanium dioxide is unacceptable on some film products with high requirements on the optical performance. Most of the titanium dioxide particles are buried in the coating after the coating liquid is dried. The titanium dioxide sterilization principle requires porous adsorption of bacteria, and then oxidative decomposition of organic substances such as bacteria by high-energy substances such as hydroxyl radicals and oxygen ions generated by the bacteria. Titanium dioxide is hidden under the coating, so that the titanium dioxide is not in enough contact with bacteria, and the antibacterial effect cannot be exerted to the maximum. The antibacterial effect of the titanium dioxide is realized by photocatalysis, and the titanium dioxide has no obvious antibacterial effect under the condition of no illumination, so that the use environment has great limitation.
Disclosure of Invention
The invention mainly solves the technical problem of providing a functional coating simultaneously using two antibacterial materials of silver-loaded nano and titanium dioxide and a preparation device thereof, which not only have the functions of sterilization, antivirus, organic matter degradation and self-cleaning under visible light and ultraviolet light of nano titanium dioxide, but also have the functions of strong antibacterial and virus killing of nano silver under the condition of no light source.
In order to solve the technical problems, the invention adopts a technical scheme that: there is provided a photocatalytic antimicrobial coating comprising: 1-10% of silver-loaded nano titanium dioxide by mass, 5-10% of surfactant by mass, 30-70% of scratch-resistant agent by mass and 20-60% of solvent by mass, pre-dispersing the silver-loaded nano titanium dioxide and the surfactant in the solvent, and then mixing the dispersion liquid obtained by pre-dispersion with the scratch-resistant agent and the solvent to obtain an antibacterial liquid; and filtering the agglomerated nano particles in the antibacterial solution, finally coating the antibacterial solution on a substrate, and performing thermal curing and UV (ultraviolet) light curing to obtain the antibacterial coating.
In a preferred embodiment of the present invention, the solvent includes one or a mixture of several organic solvents in any proportion, such as toluene, ethyl acetate, acetone, butanone and methyl isobutyl ketone.
In a preferred embodiment of the present invention, the surfactant comprises oleic acid or silane coupling agents.
In a preferred embodiment of the present invention, the scratch resistant agent comprises a mixture of 40-50% by mass of a resin, 0.5-2% by mass of a reactive diluent, 4-8% by mass of a photoinitiator, 0.02-0.04% by mass of a leveling agent, and 40-55% by mass of a solvent, wherein the resin comprises a mixture of one or more combinations of urethane acrylate, pentaerythritol triacrylate, hexanediol diacrylate, and trimethylolpropane triacrylate, and the reactive diluent comprises alkylene glycidyl ether, neodecanoic acid glycidyl ether, trimethylolpropane triglycidyl ether, and other epoxy compounds; the photoinitiator comprises 2-hydroxy-2-methyl-1-phenyl acetone, 1-hydroxycyclohexyl phenyl ketone and other free radical photoinitiators, the leveling agent comprises one or more of acrylic resin, urea-formaldehyde resin and melamine-formaldehyde resin, and the solvent comprises toluene or butanone.
In a preferred embodiment of the present invention, the particle size of the silver-loaded titanium dioxide is 10 to 50 nm.
In a preferred embodiment of the present invention, the thickness of the antibacterial coating is 0.5 to 3 μm.
In a preferred embodiment of the present invention, the thermal curing temperature is 50-150 ℃, the curing time is 30-60 s, and the UV lamp power for UV light curing is 50-444 mJ/cm2。
In order to solve the technical problem, the invention adopts another technical scheme that: the preparation device of the photocatalytic antibacterial coating comprises the following preparation procedures in sequence:
the stirring device comprises a liquid making barrel and a stirring shaft, the stirring shaft moves in the liquid making barrel in a reciprocating manner along the directions of an X axis and a Z axis, and an outlet of the liquid making barrel is connected with the coating device through a liquid conveying pipeline;
the coating device comprises a roller assembly and a charging basket, wherein the outlet of the liquid making barrel is connected with the charging basket through a liquid conveying pipeline, the charging basket is connected with the roller assembly, the roller assembly acts on a base material, and the base material is arranged on a conveying track;
the thermocuring device comprises an oven, the oven is arranged above the conveying crawler belt, and the base material is conveyed into the oven by the conveying crawler belt;
the light curing device comprises a UV lamp irradiation cavity, wherein the UV lamp irradiation cavity is arranged above the conveying crawler belt in the direction of the outlet of the oven, and the heat curing device is connected with the light curing device in series through the conveying crawler belt.
In a preferred embodiment of the present invention, the thermal curing device and the photo-curing device are both provided with static removing devices.
In a preferred embodiment of the present invention, the liquid conveying pipe is provided with a plurality of filter screen assemblies for filtering particles in the liquid.
The invention has the beneficial effects that: the coating contains the silver-loaded titanium dioxide nanoparticles, has the functions of sterilization, antivirus, organic matter degradation and self-cleaning of the nano titanium dioxide under visible light and ultraviolet light, and also has the functions of strong antibacterial and virus killing of the nano silver under the condition of no illumination; the preparation device adopts a combined mode of thermal curing, photo-curing and static removing devices, and keeps the balance of positive and negative charges of the film material within the range of 1m below through ionized air, so that the product quality is improved, the equipment cost is saved, and the safety production is guaranteed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a flow chart of a preferred embodiment of the process for preparing a photocatalytic antibacterial coating according to the present invention;
FIG. 2 is a schematic structural diagram of an apparatus for preparing a photocatalytic antibacterial coating according to a preferred embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "front" and "back" and the like indicate orientations and positional relationships based on orientations and positional relationships shown in the drawings or orientations and positional relationships where the products of the present invention are conventionally placed in use, and are used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements to be referred must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, the first feature may be present on or under the second feature in direct contact with the first and second feature, or may be present in the first and second feature not in direct contact but in contact with another feature between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
The invention comprises the following steps:
example 1:
a photocatalytic antimicrobial coating comprising: 4 percent of silver-loaded nano titanium dioxide, 6 percent of oleic acid surfactant, 40 percent of urethane acrylate and photoinitiator mixed auxiliary agent and 50 percent of ethyl acetate.
Example 2:
a photocatalytic antimicrobial coating comprising: 7.5 percent of silver-loaded nano titanium dioxide, 12.5 percent of silane coupling agent surfactant, 40 percent of scratch resistant agent and 40 percent of methyl isobutyl ketone.
Example 3:
a photocatalytic antimicrobial coating comprising: the silver-loaded nano titanium dioxide paint comprises, by mass, 10% of silver-loaded nano titanium dioxide, 10% of a silane coupling agent surfactant, 30% of a scratch-resistant agent, 35% of acetone and 15% of butanone mixed solvent.
The preparation process of examples 1-3 includes: firstly, carrying out pre-dispersion 1 on silver-loaded nano titanium dioxide and a surfactant in a solvent, and then mixing a dispersion liquid obtained by pre-dispersion with a scratch-resistant agent and the solvent to obtain an antibacterial liquid 2; and filtering 3 agglomerated nano particles in the antibacterial solution, finally coating 4 the antibacterial solution on a substrate, and carrying out thermal curing 5 and UV (ultraviolet) light curing 6 to obtain an antibacterial coating 7, as shown in figure 1.
Wherein the coating thickness of the antibacterial liquid is 0.5-3 μm, the thermosetting temperature is 50-150 ℃, the curing time is 30-60 s, and the power of a UV lamp for UV light curing is 50-444 mJ/cm2. The particle size of the silver-loaded titanium dioxide is 10-50 nm.
The scratch-resistant agent comprises a mixture of 40-50% of resin, 0.5-2% of reactive diluent, 4-8% of photoinitiator, 0.02-0.04% of leveling agent and 40-55% of solvent by mass percent, wherein the resin comprises a mixture of one or more of urethane acrylate, pentaerythritol triacrylate, hexanediol diacrylate or trimethylolpropane triacrylate, and the reactive diluent comprises epoxy compounds such as alkylene glycidyl ether, neodecanoic acid glycidyl ether and trimethylolpropane triglycidyl ether. The photoinitiator comprises 2-hydroxy-2-methyl-1-phenyl acetone, 1-hydroxycyclohexyl phenyl ketone and other free radical photoinitiators, the flatting agent comprises one or more of acrylic resin, urea-formaldehyde resin and melamine-formaldehyde resin, and the solvent is toluene or butanone.
The photocatalytic antibacterial coating reduces the forbidden bandwidth of titanium dioxide by doping silver, improves the utilization rate of sunlight, and enhances the photocatalytic performance of titanium dioxide. Due to the strong antibacterial action of the nano silver, the dosage of the titanium dioxide is reduced, and the influence on the optical performance of the product is reduced. The nano silver loaded on the titanium dioxide overcomes the defects of less effective components and weak antibacterial capability of the titanium dioxide, is not influenced by illumination and can still be normally used in a dark environment. Compared with a pure nano silver antibacterial film, the self-cleaning function is increased.
The preparation device of the photocatalytic antibacterial coating disclosed by the invention comprises the following preparation processes in sequence as shown in figure 2:
the stirring device comprises a liquid making barrel 8 and a stirring shaft 9, the stirring shaft 9 reciprocates in the liquid making barrel 8 along the X-axis direction and the Z-axis direction, and the outlet of the liquid making barrel 8 is connected with the coating device through a liquid conveying pipeline 10; the filter screen components 11 are arranged for filtering particles in the feed liquid and ensuring better coating effect.
The coating device comprises a roller assembly 12 and a material barrel, wherein the outlet of the liquid making barrel 8 is connected with the material barrel through a liquid conveying pipeline 10, the material barrel is connected with the roller assembly 12, the roller assembly 12 acts on a base material 13, and the base material 13 is arranged on a conveying crawler 14; the coating thickness of the roller assembly 12 is 0.5 to 3 μm.
The thermocuring device comprises an oven 15, the oven 15 is arranged above the conveying crawler 14, and the substrate 13 is conveyed into the oven 15 by the conveying crawler 14; the temperature of the thermosetting is 50-150 ℃, and the curing time is 30-60 s.
The light curing device comprises a UV lamp irradiation cavity 16, and the power of the UV lamp is 50-444 mJ/cm2. The UV lamp irradiation chamber 16 is provided above the conveyor belt 14 in the direction of the outlet of the oven 15, and the heat curing device and the light curing device are connected in series by the conveyor belt 14. The light curing device can also shorten the light curing time or reduce the number of series devices by adjusting the radiation intensity, thereby saving the equipment cost.
The coating contains the silver-loaded titanium dioxide nanoparticles, has the functions of sterilization, antivirus, organic matter degradation and self-cleaning of the nano titanium dioxide under visible light and ultraviolet light, and also has the functions of strong antibacterial and virus killing of the nano silver under the condition of no illumination.
And static electricity removing devices 17 are arranged in the heat curing device and the light curing device. The curing equipment is additionally provided with the static removing device 17, the positive and negative charges of the membrane material in the range of 1m below the curing equipment are kept balanced through ionized air, the product quality is improved, and the safety production is guaranteed.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A photocatalytic antimicrobial coating, comprising: 1-10% of silver-loaded nano titanium dioxide by mass, 5-10% of surfactant by mass, 30-70% of scratch-resistant agent by mass and 20-60% of solvent by mass, pre-dispersing the silver-loaded nano titanium dioxide and the surfactant in the solvent, and then mixing the dispersion liquid obtained by pre-dispersion with the scratch-resistant agent and the solvent to obtain an antibacterial liquid; and filtering the agglomerated nano particles in the antibacterial liquid, coating the antibacterial liquid on the surface of the base material by using an MG roller, removing redundant slurry on the surface by using a scraper, and carrying out thermocuring and UV photocuring to obtain the antibacterial coating.
2. The photocatalytic antibacterial coating according to claim 1, wherein the solvent comprises one or a mixture of several of organic solvents such as toluene, ethyl acetate, acetone, methyl ethyl ketone and methyl isobutyl ketone in any proportion.
3. The photocatalytic antimicrobial coating of claim 1, wherein the surfactant comprises oleic acid or silane coupling agents.
4. The photocatalytic antibacterial coating of claim 1, wherein the scratch resistant agent comprises a mixture of 40-50% by mass of a resin, 0.5-2% by mass of a reactive diluent, 4-8% by mass of a photoinitiator, 0.02-0.04% by mass of a leveling agent, and 40-55% by mass of a solvent, wherein the resin is a mixture of one or more combinations of urethane acrylate, pentaerythritol triacrylate, hexanediol diacrylate, and trimethylolpropane triacrylate, and the reactive diluent comprises alkylene glycidyl ether, neodecanoic glycidyl ether, trimethylolpropane triglycidyl ether, and other epoxy compounds; the photoinitiator comprises 2-hydroxy-2-methyl-1-phenyl acetone, 1-hydroxycyclohexyl phenyl ketone and other free radical photoinitiators, the leveling agent comprises one or more of acrylic resin, urea-formaldehyde resin and melamine-formaldehyde resin, and the solvent comprises toluene or butanone.
5. The photocatalytic antibacterial coating according to claim 1, wherein the silver-loaded titanium dioxide has a particle size of 10 to 50 nm.
6. The photocatalytic antimicrobial coating according to claim 1, wherein the thickness of the antimicrobial coating is 0.5 to 3 μm.
7. The photocatalytic antibacterial coating according to claim 1, wherein the heat curing temperature is 50-150 ℃, the curing time is 30-60 s, and the UV lamp power for UV light curing is 50-444 mJ/cm2。
8. The apparatus for preparing photocatalytic antibacterial coating according to any one of claims 1 to 7, characterized by comprising, in order according to the preparation process:
the stirring device comprises a liquid making barrel and a stirring shaft, the stirring shaft moves in the liquid making barrel in a reciprocating manner along the directions of an X axis and a Z axis, and an outlet of the liquid making barrel is connected with the coating device through a liquid conveying pipeline;
the coating device comprises a roller assembly and a charging basket, wherein the outlet of the liquid making barrel is connected with the charging basket through a liquid conveying pipeline, the charging basket is connected with the roller assembly, the roller assembly acts on a base material, and the base material is arranged on a conveying track;
the thermocuring device comprises an oven, the oven is arranged above the conveying crawler belt, and the base material is conveyed into the oven by the conveying crawler belt;
the light curing device comprises a UV lamp irradiation cavity, wherein the UV lamp irradiation cavity is arranged above the conveying crawler belt in the direction of the outlet of the oven, and the heat curing device is connected with the light curing device in series through the conveying crawler belt.
9. The apparatus for preparing photocatalytic antibacterial coating according to claim 8, wherein static electricity removing means is provided in both the thermal curing means and the photo-curing means.
10. The apparatus for preparing photocatalytic antibacterial coating according to claim 8, wherein the fluid conveying pipe is provided with a plurality of filter screen assemblies for filtering particles in the feed liquid.
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| CN202011526325.5A CN112409836A (en) | 2020-12-22 | 2020-12-22 | Photocatalytic antibacterial coating and preparation device thereof |
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| CN202011526325.5A CN112409836A (en) | 2020-12-22 | 2020-12-22 | Photocatalytic antibacterial coating and preparation device thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022134737A1 (en) * | 2020-12-22 | 2022-06-30 | 常州山由帝杉防护材料制造有限公司 | Special device for preparing photocatalytic antibacterial coating |
| CN116082902A (en) * | 2022-11-23 | 2023-05-09 | 厦门市金宝源实业有限公司 | Antiviral paint and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20100062217A1 (en) * | 2005-09-21 | 2010-03-11 | Masayuki Kurematsu | Anti-Glare Anti-Reflection Film and Method of Manufacturing the Same |
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| CN116082902A (en) * | 2022-11-23 | 2023-05-09 | 厦门市金宝源实业有限公司 | Antiviral paint and preparation method thereof |
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