WO2023112271A1 - Coating film and air conditioner provided with same - Google Patents

Coating film and air conditioner provided with same Download PDF

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Publication number
WO2023112271A1
WO2023112271A1 PCT/JP2021/046588 JP2021046588W WO2023112271A1 WO 2023112271 A1 WO2023112271 A1 WO 2023112271A1 JP 2021046588 W JP2021046588 W JP 2021046588W WO 2023112271 A1 WO2023112271 A1 WO 2023112271A1
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layer
mass
particles
coating film
manufactured
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PCT/JP2021/046588
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French (fr)
Japanese (ja)
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義則 山本
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三菱電機株式会社
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Priority to JP2023567448A priority Critical patent/JPWO2023112271A1/ja
Priority to PCT/JP2021/046588 priority patent/WO2023112271A1/en
Publication of WO2023112271A1 publication Critical patent/WO2023112271A1/en

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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
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives

Definitions

  • the present disclosure relates to a coating film and an air conditioner having the same.
  • lipophilic stains such as oily smoke
  • lipophilic stains can be easily removed by coating the surface of various articles with an oil-repellent fluororesin.
  • several methods have been disclosed so far with respect to techniques for imparting antiviral performance against the novel coronavirus.
  • An inorganic solid acid having an acid point concentration of more than 0.005 mmol/g and 10 mmol/g or less and an acid strength (pKa) of the acid point of 3.3 or less which is an inorganic phosphoric acid compound, an inorganic silicic acid compound, or
  • An antiviral agent characterized by being one or more inorganic solid acids selected from inorganic oxides and an antiviral coating composition comprising the antiviral agent have been proposed (e.g. , Patent Document 1).
  • At least one of the copper particles and the copper compound particles is supported on the oxide particles, and the total supported amount of the copper particles and the copper compound particles is 0.1 to 10 with respect to 100 parts by mass of the oxide particles.
  • a copper-supported oxide having an average secondary particle size of 80 nm to 600 nm, barium sulfate having an average secondary particle size of 1 ⁇ m to 15 ⁇ m, and the copper-supported oxide and barium sulfate are dispersed. and a water-based resin binder, the specific gravity of the copper-supported oxide is 40 to 90% with respect to the specific gravity of the barium sulfate, and the copper-supported oxide is added to 100 parts by mass of the resin binder.
  • Patent Document 1 since it contains one or more antiviral agents that are inorganic solid acids selected from inorganic phosphate compounds, inorganic silicic acid compounds, and inorganic oxides, it exhibits a certain level of antiviral performance in the initial stage. However, it was difficult to apply it to air conditioners, etc., because it did not have the effect of suppressing adhesion of dust. In Patent Document 2, since the antiviral component is dispersed in the binder resin, although it has a certain effect of long-term durability in the antiviral performance, it is not sufficient in environments such as air conditioners, and dust adheres. Inhibition effect is poor.
  • the present disclosure has been made to solve the above problems, and provides a coating film having dust adhesion suppression performance, antifungal performance, and antiviral performance over a long period of time, and an air conditioner equipped with the same. for the purpose.
  • the coating film according to the present disclosure comprises a first layer formed on a substrate and a second layer formed on the first layer, the first layer comprising spherical resin particles, an organic resin agent and an antiviral agent. wherein the second layer contains inorganic particles, fluororesin particles, an antifungal agent and an antiviral agent, and the first layer has a water contact angle of 60 degrees or more and less than 110 degrees. .
  • the present disclosure it is possible to provide a coating film having dust adhesion suppression performance, antifungal performance, and antivirus performance over a long period of time, and an air conditioner equipped with the coating film.
  • FIG. 1 is a schematic diagram of a coating film according to Embodiment 1.
  • FIG. FIG. 11 is a schematic cross-sectional view of an air conditioner according to Embodiment 3;
  • FIG. 1 is a schematic diagram of a coating film according to Embodiment 1.
  • FIG. A coating film 1 according to Embodiment 1 consists of a first layer 3 on the surface of a substrate 2 and a second layer 4 formed on the first layer 3 .
  • the first layer 3 comprises spherical resin particles 10 , an organic resin agent 5 and an antiviral agent 6 .
  • the second layer 4 comprises inorganic particles 7 , fluororesin particles 8 , an antifungal agent 9 , and an antiviral agent 6 .
  • the first layer 3 is formed by applying a liquid coating composition containing the spherical resin particles 10, the organic resin agent 5, and the antiviral agent 6 to the substrate 2 and drying it. Since the spherical resin particles 10 are dispersed in the liquid without aggregating, they are dispersed even in the first layer 3 after drying, and a part of the surface of the spherical resin particles 10 is dotted on the surface of the first layer 3. Exist and expose.
  • the second layer 4 is formed by applying a liquid coating composition containing inorganic particles 7, fluororesin particles 8, an antifungal agent 9, and an antiviral agent 6 onto the first layer 3, followed by drying. be done.
  • the spherical resin particles 10 exposed on the surface of the first layer 3 and the fluorine resin particles 8 are adjacent to each other. Since the spherical resin particles 10 and the fluororesin particles 8 form a structure in which they are adjacent to each other, the fluororesin particles 8 are dispersed in the second layer 4 without agglomeration, and fluorine is present on the surface of the second layer 4. A state is formed in which a part of the surface of the resin particle 8 is exposed.
  • the first layer 3 has the effect of enhancing adhesion with the second layer 4 . Therefore, it is suitable for application to parts that require dust adhesion suppression over a long period of time, such as air conditioners.
  • the hydrophilic part and the hydrophobic part can be a surface on which The inorganic particles 7 have the effect of suppressing adherence of hydrophobic dust.
  • the fluororesin particles 8 have the effect of suppressing adhesion of hydrophilic dust.
  • the surface of the structure where the hydrophilic part and the hydrophobic part coexist makes it easy for moisture to move on the surface during moisture absorption and drying, and it adheres to the surface.
  • hydrophilic particles and hydrophobic particles float and release them, or making them difficult to stick to each other.
  • water flows and permeates easily compared to a surface composed only of either a hydrophilic portion or a hydrophobic portion when viewed in a minute area related to the adhesion of contaminant particles in the air. Therefore, there is also an effect that adhered substances are very easily removed.
  • the base material 2 is not particularly limited, but includes parts made of metal materials and plastic materials. In particular, it is suitable for members to which oily and water-based stains coexist, are easily soiled, and cannot be cleaned frequently, such as heat exchangers, fans, and flaps of air conditioners.
  • the coating composition according to the present embodiment suppresses the adhesion of dust to a substrate having fine grooves and fine unevenness on the surface such as acrylic-styrene-glass fiber (hereinafter abbreviated as ASG) resin. effect can be given.
  • ASG acrylic-styrene-glass fiber
  • the spherical resin particles 10 of the first layer 3 are not particularly limited, and are acrylic resin particles, silicone resin particles, nylon resin particles, styrene resin particles, polyethylene resin particles, benzoguanamine resin particles, phenol resin particles, urethane resin particles, or the like can be used.
  • the spherical resin particles 10 are preferably acrylic resin particles or silicone resin particles, more preferably silicone resin particles.
  • the spherical resin particles 10 include organic spherical particles such as spherical polyamide fine particles manufactured by Sumitomo Chemical Co., Ltd., spherical phenolic resin manufactured by Gunei Chemical Industry Co., Ltd., Micropearl manufactured by Sekisui Chemical Co., Ltd., and Tospearl manufactured by Momentive. .
  • the water contact angle of the first layer 3 is preferably 60 degrees or more and less than 110 degrees. If the water contact angle of the first layer 3 is less than 60 degrees, the fluororesin particles 8 forming the second layer 4 will not be dispersed satisfactorily, which is not preferable. If the water contact angle is 110 degrees or more, the coatability of the coating agent when forming the second layer 4 is deteriorated, and defects are likely to occur in the film, which is not preferable.
  • the average particle diameter of the spherical resin particles 10 is preferably 0.5 ⁇ m or more and 15.0 ⁇ m or less, and excellent dust adhesion suppression can be obtained.
  • the average particle diameter of the spherical resin particles 10 is less than 0.5 ⁇ m, the fluororesin forming the second layer 4 will not be dispersed well, which is not preferable. On the other hand, if the average particle size of the spherical resin particles 10 exceeds 15.0 ⁇ m, the unevenness of the second layer 4 becomes large and dust tends to be caught, which is not preferable.
  • the content of the spherical resin particles 10 according to the present disclosure is preferably 0.1% by mass or more and 10.0% by mass or less with respect to the entire first layer 3. If it is less than 0.1% by mass, the fluororesin particles 8 will not be dispersed well, which is not preferable. If it exceeds 10.0% by mass, the unevenness of the second layer 4 becomes large and dust tends to be caught, which is not preferable.
  • the spherical resin particles 10 preferably have a ratio S/L of the shortest diameter S to the longest diameter L of 0.7 or more, more preferably 0.8 or more, and particularly preferably 0.9 or more. If it is less than 0.7, the fluororesin particles 8 forming the second layer 4 are not well dispersed, which is not preferable.
  • the organic resin agent 5 includes epoxy resin, polyester resin, melamine resin, ethylene-vinyl acetate copolymer, polyvinyl butyral, styrene resin, polyester urethane, acrylic urethane, polyamide, polyester resin, acrylic resin, and the like.
  • Acrylic resins are polymers having structural units derived from (meth)acrylic acid, (meth)acrylic acid esters, and the like.
  • the acrylic resin may contain a crosslinked structure, and the crosslinked structure is formed from a monomer having a crosslinkable functional group.
  • Crosslinkable functional groups include, for example, an isocyanate group, an oxazoline group, a methylene group, a carbodiimide group, an aziridine group, and the like.
  • the crosslinked structure may be derived from melamine or the like.
  • the resin composition containing an acrylic resin may be appropriately selected from commercially available products capable of forming an adhesive resin layer.
  • Epoxy-based resins are polymers comprising structural units derived from monomers having epoxy groups in their molecules.
  • the epoxy resin may contain a crosslinked structure, and the above-described crosslinked structure is formed from a monomer having a crosslinkable functional group.
  • the resin composition containing an epoxy resin may be appropriately selected from commercially available products capable of forming an adhesive resin layer, and examples thereof include EPICRON manufactured by DIC Corporation.
  • a resin composition containing an epoxy resin it may contain individually by 1 type, and may contain it in combination of 2 or more types.
  • An inorganic or organic material can be used for the antiviral agent 6 .
  • metal oxide or metal hydrate particles containing at least one metal selected from silver, copper, zinc, titanium, tungsten and the like can be used.
  • a silver-based inorganic additive (EX20706D) available from Sinanen Zeomic Co., Ltd., or a silver-based inorganic additive (EX20706B) available from Taihei Kagaku Sangyo Co., Ltd. may be used.
  • the zeolite exchanged with at least one of silver ions and copper ions may be further exchanged with other metal ions such as zinc ions.
  • lanthanum molybdenum oxide-based inorganic fillers La2Mo2O9 (LMO) and the like are included.
  • the silver nanoparticles here refer to silver nanoparticles containing silver particles with a diameter of about 1 to 100 nm
  • the copper nanoparticles refer to copper nanoparticles containing copper particles with a diameter of about 1 to 100 nm.
  • the organic antiviral agent 6 is preferably at least one selected from the group consisting of antimicrobial resins, sulfonic acid surfactants, copper alkoxides, and bis-type quaternary ammonium salts.
  • the organic antiviral agent 6 is at least one selected from the group consisting of antimicrobial resins, sulfonic acid-based surfactants, sulfonic acid-containing polymers, bis-type quaternary ammonium salts, and multi-block polymers. When there is, the organic antiviral agent 6 spreads over the entire coating film and becomes an antimicrobial member having high antimicrobial activity.
  • the organic antiviral agent 6 includes 2-4 thiazolylbenzimidazole methyl-3-benzimidalol carbamate as a benzimidazole, and polyoxyethylene (dimethylimino) ethylene (dimethylimino) as a quaternary ammonium salt.
  • examples include ethylene chloride, octadecyldimethyl(3-triethoxysilylpropyl)ammonium chloride, benzalkonium chloride, bencentonium chloride, and dialkyldimethylammonium chloride.
  • the film thickness of the first layer 3 is preferably 1.0 ⁇ m or more and 10.0 ⁇ m or less, and the thickness of the second layer 4 is preferably 0.1 ⁇ m or more and 5.0 ⁇ m or less. More preferably, the film thickness of the first layer is 2.0 ⁇ m or more and 8.0 ⁇ m or less. When the film thickness of the first layer is 2.0 ⁇ m or more and 8.0 ⁇ m or less, excellent antiviral properties and long-term durability can be exhibited. More preferably, the film thickness of the second layer 4 is 0.2 ⁇ m or more and 4.5 ⁇ m or less. When the film thickness of the second layer 4 is 0.2 ⁇ m or more and 4.5 ⁇ m or less, excellent antiviral properties and dust adhesion suppression performance can be exhibited.
  • the film thickness of the first layer 3 depends on the concentration of the composition used for film formation and the bar coater No. used for film formation. can be adjusted by selecting Moreover, the film thickness can be measured by fluorescent X-ray, infrared film thickness meter, mass measurement by coating film peeling, or the like.
  • the thickness of the first layer 3 refers to the thickness formed by the organic resin agent 5, and the thickness of the second layer 4 includes the inorganic particles 7, the antiviral agent 6, the fluororesin particles 8, and the antifungal and antibacterial agents. It refers to the thickness including the agent 9.
  • the inorganic particles 7 forming the second layer 4 are at least one selected from SiO2, Al2O3, Sb2O5, ZrO2, TiO2, Fe2O3, CeO2, AgO, CuO, Cu2O, ZnO, and composite oxides or mixtures thereof. characterized by The inorganic particles 7 of the present disclosure are preferably hydrophilic silica particles and titanium particles. When the inorganic particles 7 are spherical particles, this effect can be further enhanced.
  • the average particle size of the silica particles is preferably about 5 nm or more and about 100 nm or less when measured by a light scattering method.
  • the surface portion corresponding to about 15 to 30% of the weight of the silica particles is partially dissolved in water.
  • Silica particles having an average particle diameter of less than 5 nm have a too high ratio of silica components half dissolved in water, resulting in aggregation of silica particles.
  • the silica particles have an average particle size of 100 nm or less, so the scattering of light reflected by the coating film is reduced, so the transparency of the coating film is improved, the change in color tone and texture of the substrate is suppressed, and the color tone of the substrate is reduced. and texture can be preserved.
  • the silica component in the obtained coating film is dense but has fine voids between the silica particles. .
  • the denseness makes it possible to reduce the film thickness, and the voids reduce the intermolecular force with the particles that cause contamination, that is, the adhesive force with the particles, which has the effect of making adhesion difficult.
  • the fluororesin particles 8 used in the present embodiment are not particularly limited as long as they are dispersed in an aqueous medium.
  • Specific examples of the fluororesin particles include PTFE (polytetrafluoroethylene), FEP (tetrafluoroethylene-hexafluoropropylene copolymer), PFA (tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer), ETFE (ethylene- Tetrafluoroethylene copolymer), ECTFE (ethylene-chlorotrifluoroethylene copolymer), PVDF (polyvinylidene fluoride), PCTFE (polychlorotrifluoroethylene), PVF (polyvinyl fluoride), copolymers thereof or At least one selected from mixtures is included.
  • Other resin particles may be mixed with the fluororesin particles. It is also possible to use those having the form of a dispersion stably dispersed in an aqueous medium due to the effect of hydrophilic groups
  • the average particle size of the fluororesin particles 8 is preferably 50 nm or more and 500 nm or less, more preferably 100 nm or more and 250 nm or less, when measured by a light scattering method.
  • the fluororesin particles 8 having such an average particle size are easily dispersed in the coating composition and are sufficiently large relative to the inorganic particles, so that they are easily exposed on the surface of the coating film. If the average particle diameter exceeds 500 nm, the area of the fluororesin particles exposed on the surface of the coating film becomes too large, and hydrophobic contaminants tend to adhere, or the unevenness of the coating film increases, causing contaminants to enter the coating film. may easily stick. On the other hand, when the average particle size of the fluororesin particles is less than 50 nm, the fluororesin particles 8 may be difficult to be exposed on the surface of the coating film.
  • the antifungal and antibacterial agent 9 is a compound selected from the group consisting of organic iodine compounds, isothiazoline compounds and alanine compounds, as long as it is easily soluble in water.
  • organic iodine compounds include 3-iodo-2-propynyl bityl carbamate, diiodomethyl-p-toluylsulfone, p-chlorophenyl-3-iodopropargyl formal, and the like.
  • isothiazolin compounds include 5-chloro-2-methyl-4-isothiazolin-3-one, 2-methyl-4-isothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one, 2-methyl-4,5-trimethylene-4-isothiazolin-3-one, 1,2-benzisothiazolin-3-one, n -Butyl-benzisothiazolin-3-one and the like.
  • alanine compounds include N-lauryl- ⁇ -alanine and the like.
  • the organic iodine compound, isothiazoline compound and alanine compound may be used alone or in combination of two or more.
  • the water-dispersible fungicide particles used in the present disclosure are compounds selected from the group consisting of imidazole compounds, triazole compounds, pyrithione compounds, thiazole compounds and thiophene compounds, as long as they are dispersible in an aqueous medium. good.
  • the water-dispersible fungicide particles preferably have a solubility in water at 20° C. of 0.5 mg/L or less. If the solubility exceeds 0.5 mg/L, the effect will be limited in an environment where a lot of water exists such as plumbing parts.
  • imidazole compounds include methyl 2-benzimidazole carbamate, 1-(butylcarbamoyl)-2-methyl benzimidazole carbamate, and thiabendazole.
  • triazole compounds include 2-(4-chlorophenyl)-3-cyclopropyl-1-(1H-1,2,4-triazol-1-yl)-butan-2-ol, 4,4-dimethyl -3-(1H-1,2,4-triazol-1-ylmethyl)pentan-3-ol and the like.
  • pyrithione compounds include zinc pyrithione and sodium pyrithione.
  • thiazole compounds include 2-(4-thiocyanomethylthio)benzothiazole and the like.
  • thiophene compounds include 3,3,4,4-tetrachlorotetrahydrothiophene-1,1-dioxide, 3,3,4-trichlorotetrahydrothiophene-1,1-dioxide, 3,3,4,4 -tetrachlorotetrahydrothiophene-1,1-dioxide and the like. These compounds may be used alone or in combination of two or more.
  • the content of the antifungal and antibacterial agent 9 is 0.1% by mass or more and 25.0% by mass or less, preferably 1.0% by mass or more and 15.0% by mass or less, based on the total mass of the inorganic particles and the hydrophobic resin particles. It is 0% by mass or less. If the content is less than 0.1% by mass, the effect of suppressing mold cannot be sufficiently obtained. On the other hand, if the content exceeds 25.0% by mass, the unevenness of the coating film becomes too large, making it easier for dirt to adhere, and mycelia to germinate from the dirt.
  • the average particle diameter of the antifungal and antibacterial agent 9 is preferably 0.1 ⁇ m or more and 3.0 ⁇ m or less. If the average particle size is less than 0.1 ⁇ m, the effect of suppressing the growth of hypha germinated from spores adhering to the surface of the coating film is poor. On the other hand, if the average particle diameter exceeds 3.0 ⁇ m, the unevenness of the coating film becomes too large, making it easier for stains to adhere, causing germination of fungi from the stains.
  • the average particle diameter of the water-dispersible fungicide particles used in the present disclosure is a value measured by ELSZ-2 manufactured by Otsuka Electronics Co., Ltd.
  • the antiviral agent 6 can be implemented in the same manner as described in the first layer 3.
  • the first layer includes the first layer formed on the base material and the second layer formed on the first layer, and the first layer includes the spherical resin particles and the organic resin agent. and an antiviral agent, the second layer contains inorganic particles, fluororesin particles, an antifungal agent, and an antiviral agent, and the first layer has a water contact angle of 60 degrees or more and less than 110 degrees.
  • the coating film has the effect of exhibiting dust adhesion suppression performance, antifungal performance, and antiviral performance over a long period of time.
  • Embodiment 2 relates to a manufacturing process for forming coating film 1 on substrate 2 .
  • the manufacturing process for forming the coating film 1 on the substrate 2 shown in the second embodiment includes a step of preparing a coating composition that forms each of the first layer 3 and the second layer 4, and a step of A first step of forming a layer 3 and a second step of forming a second layer 4 on the first layer 3 are included.
  • a coating composition is a water-based composition containing water as a medium.
  • Examples of the method of applying the coating agent of the first layer 3 to the substrate 2 in the first step include a method using a commonly used coating device such as a bar coater, a roll coater, or a flow coater. Also, the amount of the composition to be applied may be appropriately selected according to the thickness of the desired layer and the like.
  • Examples of the application method in the second step include a method using a commonly used coating device such as a bar coater, roll coater, or flow coater.
  • the amount of the inorganic particles 7 added to the coating composition in the second step is preferably 0.01% by mass or more and 5.0% by mass or less, more preferably 0.02% by mass or more and 4.0% by mass or less. If it is less than 0.01% by mass, the inorganic particles 7 become sparse and the base of the hydrophilic layer film cannot be formed, resulting in insufficient dust adhesion suppression. If it exceeds 5.0% by mass, the substrate of the hydrophilic layer film becomes too thick and cracks are likely to occur, which is not preferable. In addition, odor is likely to occur, which is not preferable.
  • the content of the fluororesin particles 8 is preferably 0.01% by mass or more and 5.0% by mass or less with respect to the coating composition.
  • the content of the fluororesin particles 8 is preferably 0.01% by mass or more and 5.0% by mass or less with respect to the coating composition.
  • the formation of the coating film 1 on the substrate 2 is carried out through a step of applying the coating composition to the substrate 2 and a drying step.
  • the second layer 4 is formed.
  • the coating composition can be applied by spraying, roller, or dipping, and allowed to air dry at ambient temperature. By accelerating the reaction with hot air or oven heating, a stronger coating film can be obtained.
  • the heating in this case is preferably 40° C. or higher and 250° C. or lower. Below 40°C, heating only has the effect of accelerating drying.
  • the temperature exceeds 250° C. cracks or the like may occur due to thermal deterioration of the coating film 1, which is not preferable.
  • Another method is to raise the temperature of the coating liquid or the object to be coated. By setting this temperature to 30° C. or higher and 60° C. or lower, the reaction can proceed sufficiently. If the temperature is less than 30°C, the effect of heating is too small. A temperature exceeding 60° C. is not preferable because the coating liquid evaporates violently and dries quickly, making uniform coating difficult.
  • FIG. 2 is a schematic cross-sectional view of the indoor unit 100 of the air conditioner according to Embodiment 3.
  • the indoor unit 100 includes an indoor unit main body 110 which is a frame body of the air conditioner, and drain pans 113 and 114, a fan 115, an air passage wall 116, and a heat exchanger 117 as examples of parts constituting the indoor unit 100. , a heat exchanger 118 , a heat exchanger 119 , an up/down wind direction variable vane 120 and a front panel 121 .
  • Components having the same functions and actions as those of the coating film 1 according to Embodiment 1 are denoted by the same reference numerals, and descriptions thereof are omitted.
  • a front panel 121 is attached to the front surface of the indoor unit main body 110 so that it can be opened and closed.
  • a suction port 111 for sucking air from the room in which the indoor unit 100 of the air conditioner is installed is formed on the upper surface side of the indoor unit main body 110 .
  • a blowout port 112 for blowing air into the room is formed on the lower surface side of the indoor unit main body 110 .
  • a vertical wind direction variable vane 120 is rotatably attached to the outlet 112 . The vertical wind direction variable vane 120 adjusts the vertical direction of the airflow blown out from the outlet 112 .
  • blower fan 115 is installed inside the indoor unit body 110 .
  • the blower fan 115 sucks air into the indoor unit main body 110 and blows the sucked air out of the indoor unit main body 110 .
  • blower fan 115 is a cross-flow fan.
  • the heat exchanger 117 , the heat exchanger 118 and the heat exchanger 119 are arranged inside the indoor unit body 110 .
  • the heat exchanger 117 is arranged above the back side of the blower fan 115
  • the heat exchanger 118 is arranged above the front side of the blower fan 115
  • the heat exchanger 119 is arranged on the front side of the blower fan 115 . . That is, the heat exchanger 119 is positioned below the heat exchanger 118 and the heat exchanger 117 is positioned behind the heat exchanger 118 .
  • a drain pan 113 for collecting condensed water is arranged below the heat exchanger 119 .
  • a drain pan 114 is also arranged below the heat exchanger 117 .
  • the drain pan 113 and the drain pan 114 are formed as part of the indoor unit body 110 .
  • a coating film 1 is formed on at least part of the surfaces of the blower fan 115, the air passage wall 116, and the drain pan 113. Coating film 1 may be formed on the entire surface of drain pan 113 . Moreover, the coating film 1 may be formed on at least a part of the surface of the drain pan 114 . The entire drain pan 114 may be formed of the coating film 1 . In other words, drain pan 113 and drain pan 114 have coating film 1 described in the first embodiment on at least one surface of drain pan 113 and drain pan 114 . The method of forming coating film 1 is the same as that described in the second embodiment.
  • the formed coating film 1 has dust adhesion suppression performance and long-term antiviral and antifungal performance, so it is suitable for use in various parts of air conditioners.
  • the coating film 1 is formed on both the blower fan 115 , the air passage wall 116 , the drain pan 113 and the drain pan 114 . Therefore, the air conditioner according to Embodiment 3, which has various members on which coating film 1 is formed, has dust adhesion suppression performance, antifungal performance, and antiviral performance over a long period of time.
  • Example 1 As a coating composition constituting the first layer, 1.0% by mass of spherical resin particles (TOSPEALR130 manufactured by Momentive), 2.0% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) was mixed with 0.5% by mass. The coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer.
  • TOSPEALR130 manufactured by Momentive
  • an organic resin agent aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • an antiviral agent Naosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.
  • silica particles manufactured by Nikki Shokubai Kasei Co., Ltd. (registered trademark) Cataloid SI-550) 2.0% by mass and fluororesin particles (manufactured by AGC (registered trademark) Fluon AD911E ) 2.0% by mass
  • antiviral agent Nikki Shokubai Kasei Co., Ltd.
  • AGC registered trademark Fluon AD911E
  • antiviral agent Nikki Shokubai Kasei Co., Ltd.
  • AGC registered trademark
  • antifungal agent manufactured by Fuji Chemical Co., Ltd.
  • MP-102SVP05 manufactured by Fuji Chemical Co., Ltd.
  • Example 2 As a coating composition constituting the first layer, 1.0% by mass of spherical resin particles (TOSPEALR3120 manufactured by Momentive), 0.5% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) was mixed with 0.5% by mass. The coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer.
  • TOSPEALR3120 manufactured by Momentive
  • an organic resin agent aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • an antiviral agent Naosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.
  • silica particles manufactured by Nikki Shokubai Kasei Co., Ltd. (registered trademark) Cataloid SI-550) 0.2% by mass and fluororesin particles (manufactured by AGC (registered trademark) Fluon AD911E ) 0.1% by mass
  • antiviral agent Nikki Shokubai Kasei Co., Ltd.
  • AGC registered trademark Fluon AD911E
  • antiviral agent Nikki Shokubai Kasei Co., Ltd.
  • antifungal agent manufactured by Fuji Chemical Co., Ltd.
  • MP-102SVP05 manufactured by Fuji Chemical Co., Ltd.
  • Example 3 As a coating composition constituting the first layer, 2.0% by mass of spherical resin particles (TOSPEALR130 manufactured by Momentive), 5.0% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) was mixed with 0.5% by mass. The coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer.
  • TOSPEALR130 manufactured by Momentive
  • an organic resin agent aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • an antiviral agent Naosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.
  • silica particles manufactured by Nikki Shokubai Kasei Co., Ltd. (registered trademark) Cataloid SI-550
  • fluororesin particles manufactured by AGC (registered trademark) Fluon AD911E
  • antiviral agent Nikki Shokubai Kasei Co., Ltd.
  • antifungal agent MP-102SVP05 manufactured by Fuji Chemical Co., Ltd.
  • a second layer was formed by applying a coating composition constituting a second layer onto the first layer and drying in a 60° C. constant temperature bath for 20 minutes. Table 1 shows the average particle diameter of each particle contained in the formed coating film and the film thickness of the first layer and the second layer. The film thickness was measured by cross-sectional observation.
  • Example 4 As a coating composition constituting the first layer, 1.0% by mass of spherical resin particles (XC99-A8808 manufactured by Momentive) and 2.0% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) 0.5% by mass of a virus agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) was prepared. The coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer.
  • spherical resin particles XC99-A8808 manufactured by Momentive
  • an organic resin agent aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • a virus agent Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.
  • silica particles manufactured by Nikki Shokubai Kasei Co., Ltd. (registered trademark) Cataloid SI-550
  • fluororesin particles manufactured by AGC (registered trademark) Fluon AD911E
  • a second layer was formed by applying a coating composition constituting a second layer onto the first layer and drying in a 60° C. constant temperature bath for 20 minutes.
  • Table 1 shows the average particle diameter of each particle contained in the formed coating film and the film thickness of the first layer and the second layer. The film thickness was measured by cross-sectional observation.
  • Example 5 As a coating composition constituting the first layer, 1.0% by mass of spherical resin particles (TOSPEALR3120 manufactured by Momentive), 2.0% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) was mixed with 0.5% by mass. The coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer.
  • TOSPEALR3120 manufactured by Momentive
  • an organic resin agent aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • an antiviral agent Naosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.
  • silica particles manufactured by Nikki Shokubai Kasei Co., Ltd. (registered trademark) Cataloid SI-550) 2.0% by mass and fluororesin particles (manufactured by AGC (registered trademark) Fluon AD911E ) 2.0% by mass
  • antiviral agent Nikki Shokubai Kasei Co., Ltd.
  • AGC registered trademark Fluon AD911E
  • antiviral agent Nikki Shokubai Kasei Co., Ltd.
  • AGC registered trademark
  • antifungal agent manufactured by Fuji Chemical Co., Ltd.
  • MP-102SVP05 manufactured by Fuji Chemical Co., Ltd.
  • Example 6 As a coating composition constituting the first layer, 2.0% by mass of spherical resin particles (TOSPEALR130 manufactured by Momentive), 2.0% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) was mixed with 0.5% by mass. The coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer. Subsequently, as a coating composition constituting the second layer, silica particles (Nissan Chemical Co., Ltd.
  • a second layer was formed by applying a coating composition constituting a second layer onto the first layer and drying in a 60° C. constant temperature bath for 20 minutes. Table 1 shows the average particle diameter of each particle contained in the formed coating film and the film thickness of the first layer and the second layer. The film thickness was measured by cross-sectional observation.
  • Example 7 As a coating composition constituting the first layer, 2.0% by mass of spherical resin particles (TOSPEALR130 manufactured by Momentive), 2.0% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) was mixed with 0.5% by mass. The coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer. Subsequently, as a coating composition constituting the second layer, silica particles (manufactured by Nissan Chemical Co., Ltd.
  • silica particles manufactured by Nissan Chemical Co., Ltd.
  • a second layer was formed by applying a coating composition constituting a second layer onto the first layer and drying in a 60° C. constant temperature bath for 20 minutes. Table 1 shows the average particle diameter of each particle contained in the formed coating film and the film thickness of the first layer and the second layer. The film thickness was measured by cross-sectional observation.
  • Example 8> As a coating composition constituting the first layer, 2.0% by mass of spherical resin particles (TOSPEALR130 manufactured by Momentive), 2.0% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) was mixed with 0.5% by mass. The coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer. Subsequently, as a coating composition constituting the second layer, silica particles (Nissan Chemical Co., Ltd.
  • a second layer was formed by applying a coating composition constituting a second layer onto the first layer and drying in a 60° C. constant temperature bath for 20 minutes. Table 1 shows the average particle diameter of each particle contained in the formed coating film and the film thickness of the first layer and the second layer. The film thickness was measured by cross-sectional observation.
  • Example 9 As a coating composition constituting the first layer, 2.0% by mass of spherical resin particles (TOSPEALR130 manufactured by Momentive), 2.0% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) was mixed with 0.5% by mass. The coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer. Subsequently, as a coating composition constituting the second layer, silica particles (manufactured by Nissan Chemical Co., Ltd.
  • silica particles manufactured by Nissan Chemical Co., Ltd.
  • a second layer was formed by applying a coating composition constituting a second layer onto the first layer and drying in a 60° C. constant temperature bath for 20 minutes. Table 1 shows the average particle diameter of each particle contained in the formed coating film and the film thickness of the first layer and the second layer. The film thickness was measured by cross-sectional observation.
  • a coating composition constituting the first layer 2.0% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) and 0% of an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) .5% by weight.
  • the coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer.
  • silica particles manufactured by Nikki Shokubai Kasei Co., Ltd.
  • ⁇ Comparative Example 2> As a coating composition constituting the first layer, 2.0% by mass of spherical resin particles (TOSPEALR130 manufactured by Momentive), 2.0% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) was mixed with 0.5% by mass. The coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer. A second layer did not form. Table 1 shows the average particle size of each particle contained in the formed coating film and the film thickness of the first layer. The film thickness was measured by cross-sectional observation.
  • ⁇ Comparative Example 3> As a coating composition that does not form the first layer and constitutes the second layer, silica particles (manufactured by Nikki Shokubai Kasei Co., Ltd. (registered trademark) Cataloid SI-550) 2.0% by mass, fluororesin particles (manufactured by AGC ( Registered trademark) Fluon AD911E) 2.0% by mass, antiviral agent (Neosintol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) 0.5% by mass, antifungal agent (MP-102SVP05 manufactured by Fuji Chemical Co., Ltd.) ) at 1.0% by mass, the composition shown in Table 1 was applied and dried in a constant temperature bath at 60°C for 20 minutes to form a coating film. Table 1 shows the average particle diameter of each particle contained in the formed coating film and the film thickness of the second layer. The film thickness was measured by cross-sectional observation.
  • ⁇ Comparative Example 4> As a coating composition constituting the first layer, 2.0% by mass of spherical resin particles (TOSPEALR130 manufactured by Momentive), 2.0% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) was mixed with 0.5% by mass. The coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer.
  • TOSPEALR130 manufactured by Momentive
  • an organic resin agent aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
  • an antiviral agent Naosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.
  • a coating composition constituting the second layer 6.0% by mass of fluororesin particles (AGC (registered trademark) Fluon AD911E) and an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd. ) and 1.0% by mass of an antifungal and antibacterial agent (MP-102SVP05 manufactured by Fuji Chemical Co., Ltd.).
  • a second layer was formed by applying a coating composition constituting a second layer onto the first layer and drying in a 60° C. constant temperature bath for 20 minutes. Table 1 shows the average particle diameter of each particle contained in the formed coating film and the film thickness of the first layer and the second layer. The film thickness was measured by cross-sectional observation.
  • a coating composition constituting the first layer 2.0% by mass of spherical resin particles (TOSPEALR130 manufactured by Momentive), 2.0% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) was mixed with 0.5% by mass.
  • the coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer.
  • silica particles manufactured by Nikki Shokubai Kasei Co., Ltd. (registered trademark) Cataloid SI-550
  • fluororesin particles manufactured by AGC (registered trademark) Fluon AD911E
  • a second layer was formed by applying a coating composition constituting a second layer onto the first layer and drying in a 60° C. constant temperature bath for 20 minutes.
  • Table 1 shows the average particle diameter of each particle contained in the formed coating film and the film thickness of the first layer and the second layer. The film thickness was measured by cross-sectional observation.
  • the average particle size of the spherical resin particles, the first layer thickness, the second layer thickness, the average particle size of the inorganic particles, and the antifungal and antibacterial Table 1 shows a list of the average particle size and composition of the particles.
  • the dust adhesion suppression performance of the coating film was evaluated by evaluating the adhesion of dust. Under conditions of a temperature of 25° C. and a humidity of 50%, JIS Class 15 was sprayed with air onto a member having a coating film, and the test was performed initially (after 10 seconds) and after 5 hours. Then, it was collected with a mending tape (manufactured by Sumitomo 3M Co., Ltd.), and the absorbance (wavelength 550 nm) was measured with a spectrophotometer (manufactured by Shimadzu Corporation; UV-3100PC) and evaluated according to the following criteria. It can be said that the smaller the absorbance, the better the dust adhesion suppression performance of the coating film.
  • Antifungal performance is specified in "JIS Z2911, 10. Testing of plastic products" as a qualitative test for evaluating the fungal resistance of plastic products. In addition, this test method is divided into three types, and method B was adopted this time. A mixed spore suspension containing spores of the following five types of fungi was used in the test. The five mold spores are Aspergillus niger NBRC 105649, Penicillium pinophilum NBRC 33285, Paecilomyces variotii NBRC 33284, Trichoderma virens NBRC 6355, Chaet omium globosum NBRC 6347.
  • the action time was 24 hours
  • the test virus was type A influenza virus (H1N1 type)
  • the test method was based on the antibacterial test method (ISO21702).
  • PET 40 mm x 40 mm size film
  • the virus was collected from the test article and the antibacterial activity value was measured.
  • the antibacterial activity value after the water resistance test (class) was also measured.
  • Table 2 shows the antibacterial activity values of the dust adhesion suppression performance, the antifungal performance, and the antiviral performance based on the results of the above tests. ⁇ Table 2>
  • the coating films of Examples 1 to 9 have good dust adhesion suppression performance, and also have high antifungal performance and antiviral performance. Among them, the coating film of Example 1 exhibited the best dust adhesion suppression performance, antifungal performance, and antiviral performance. Moreover, since the coating film of Comparative Example 1 does not contain spherical resin particles, the dust adhesion suppression performance after 100 hours has deteriorated. Moreover, the coating film of Comparative Example 2, which did not contain the first layer, resulted in poor antiviral performance after the water resistance test. Furthermore, the coating film of Comparative Example 3 deteriorated in dust adhesion suppression performance both at the initial stage and after 100 hours.
  • the coating film of Comparative Example 4 resulted in deterioration in dust adhesion suppression performance.
  • the coating film of Comparative Example 5 resulted in deterioration in antifungal performance.
  • the above embodiments 1 to 3 can be implemented in combination with each other.
  • the configuration shown in the above embodiment shows an example of the content of the present disclosure, and can be combined with another known technique, and the configuration can be configured without departing from the gist of the present disclosure. It is also possible to omit or change part of

Abstract

A coating film according to one embodiment of the present disclosure is characterized by being provided with a first layer that is formed on a base material and a second layer that is formed on the first layer, while being also characterized in that: the first layer contains spherical resin particles, an organic resin agent and an antiviral agent; the second layer contains inorganic particles, fluororesin particles, an antifungal and antimicrobial agent, and an antiviral agent; and the first layer has a contact angle with water of not less than 60 degrees but less than 110 degrees. Consequently, the present disclosure is able to provide: a coating film which has dust adhesion suppressing properties, antifungal properties and antiviral properties for a long period of time; and an air conditioner which is provided with this coating film.

Description

コーティング膜及びこれを備えた空気調和機Coating film and air conditioner provided with the same
　本開示は、コーティング膜及びこれを備えた空気調和機に関するものである。 The present disclosure relates to a coating film and an air conditioner having the same.
　各種の製品表面は、その環境からの様々な汚染物質に曝されることで、汚く見えたり、衛生的に問題を生じたり、腐食等により性能劣化が引き起こされたりする。中でも、空気調和機は、その機能上、環境からの汚染の影響を非常に受けやすいものであり、汚染によって各種の不都合を生じやすい。室内又は室外で使用される各種物品の表面には、粉塵、油煙及び煙草のヤニ等の様々な汚れが付着するため、これを抑制し得るような方法が各種検討されている。例えば、粉塵等の汚れの付着を抑制する場合、各種物品の表面に帯電防止剤をコーティングすることで、粉塵の静電的な付着を抑制し得ることが知られている。また、油煙等のような親油性の汚れの付着を抑制する場合、各種物品の表面に撥油性のフッ素樹脂をコーティングすることで親油性の汚れを除去し易くし得ることが知られている。更に、新型コロナウイルスに対する抗ウイルス性能を付与する技術については、これまでいくつかの方法が開示されている。 Various product surfaces are exposed to various contaminants from the environment, which can make them look dirty, cause sanitary problems, and cause deterioration in performance due to corrosion, etc. Among them, air conditioners are very susceptible to environmental contamination due to their functions, and contamination tends to cause various inconveniences. Various types of dirt, such as dust, oily smoke, and cigarette tar, adhere to the surfaces of various articles used indoors or outdoors, and various methods have been investigated to prevent this. For example, it is known that when suppressing adhesion of dirt such as dust, electrostatic adhesion of dust can be suppressed by coating the surface of various articles with an antistatic agent. In addition, it is known that in order to suppress adhesion of lipophilic stains such as oily smoke, lipophilic stains can be easily removed by coating the surface of various articles with an oil-repellent fluororesin. Furthermore, several methods have been disclosed so far with respect to techniques for imparting antiviral performance against the novel coronavirus.
　酸点濃度が０．００５ｍｍｏｌ／ｇを超え１０ｍｍｏｌ／ｇ以下であり、酸点の酸強度（ｐＫａ）が３．３以下である無機固体酸であって、無機リン酸化合物、無機ケイ酸化合物又は無機酸化物から選択された無機固体酸のいずれか１つ以上であることを特徴とする抗ウイルス剤と抗ウイルス剤を含むことを特徴とする抗ウイルス用コーティング組成物が提案されている（例えば、特許文献１）。 An inorganic solid acid having an acid point concentration of more than 0.005 mmol/g and 10 mmol/g or less and an acid strength (pKa) of the acid point of 3.3 or less, which is an inorganic phosphoric acid compound, an inorganic silicic acid compound, or An antiviral agent characterized by being one or more inorganic solid acids selected from inorganic oxides and an antiviral coating composition comprising the antiviral agent have been proposed (e.g. , Patent Document 1).
　また、銅粒子及び銅化合物粒子の少なくともいずれか一方を酸化物粒子に担持してなり、前記酸化物粒子１００質量部に対して前記銅粒子及び銅化合物粒子の合計担持量は０．１～１０質量部であり、平均二次粒子径が８０ｎｍ～６００ｎｍである銅担持酸化物と、平均二次粒子径が１μｍ～１５μｍである硫酸バリウムと、前記銅担持酸化物及び硫酸バリウムを分散させる、撥水性の樹脂バインダーと、を有し、前記銅担持酸化物の比重が、前記硫酸バリウムの比重に対して４０～９０％であり、前記樹脂バインダー１００質量部に対して、前記銅担持酸化物が０．１～１０質量部であり、前記硫酸バリウムが１０～４５質量部であり、塗膜厚が前記硫酸バリウムの平均二次粒子径よりも１～２μｍ厚いことを特徴とする抗ウイルス性塗膜が提案されている（例えば、特許文献２） Further, at least one of the copper particles and the copper compound particles is supported on the oxide particles, and the total supported amount of the copper particles and the copper compound particles is 0.1 to 10 with respect to 100 parts by mass of the oxide particles. Parts by mass, a copper-supported oxide having an average secondary particle size of 80 nm to 600 nm, barium sulfate having an average secondary particle size of 1 μm to 15 μm, and the copper-supported oxide and barium sulfate are dispersed. and a water-based resin binder, the specific gravity of the copper-supported oxide is 40 to 90% with respect to the specific gravity of the barium sulfate, and the copper-supported oxide is added to 100 parts by mass of the resin binder. 0.1 to 10 parts by mass, the barium sulfate is 10 to 45 parts by mass, and the coating thickness is 1 to 2 μm thicker than the average secondary particle diameter of the barium sulfate. A membrane has been proposed (for example, Patent Document 2)
特許第６７２１０３５号公報Japanese Patent No. 6721035 特開２０１５－２０５９９８号公報JP 2015-205998 A
　しかしながら、特許文献１では、無機リン酸化合物、無機ケイ酸化合物又は無機酸化物から選択された無機固体酸のいずれか１つ以上の抗ウイルス剤を含むため、初期において一定の抗ウイルス性能を示すものの、粉塵付着抑制の効果がなく、空気調和機などに適用するには困難であった。特許文献２では、バインダー樹脂に抗ウイルス性成分が分散されていることから、抗ウイルス性能に長期的耐久性の一定の効果はあるものの空気調和機などの環境下に十分ではなく、また粉塵付着抑制の効果が乏しい。 However, in Patent Document 1, since it contains one or more antiviral agents that are inorganic solid acids selected from inorganic phosphate compounds, inorganic silicic acid compounds, and inorganic oxides, it exhibits a certain level of antiviral performance in the initial stage. However, it was difficult to apply it to air conditioners, etc., because it did not have the effect of suppressing adhesion of dust. In Patent Document 2, since the antiviral component is dispersed in the binder resin, although it has a certain effect of long-term durability in the antiviral performance, it is not sufficient in environments such as air conditioners, and dust adheres. Inhibition effect is poor.
　本開示は、上記のような問題を解決するためになされたものであり、長期にわたって粉塵付着抑制性能と防かび性能と抗ウイルス性能とを有するコーティング膜及びこれを備えた空気調和機を提供することを目的とする。 The present disclosure has been made to solve the above problems, and provides a coating film having dust adhesion suppression performance, antifungal performance, and antiviral performance over a long period of time, and an air conditioner equipped with the same. for the purpose.
　本開示に係るコーティング膜は、基材上に形成された第一層と、第一層上に形成された第二層とを備え、第一層は球状樹脂粒子と有機樹脂剤と抗ウイルス剤とを含み、第二層は無機粒子とフッ素樹脂粒子と防かび抗菌剤と抗ウイルス剤とを含み、さらに、第一層の水接触角が６０度以上１１０度未満であることを特徴とする。 The coating film according to the present disclosure comprises a first layer formed on a substrate and a second layer formed on the first layer, the first layer comprising spherical resin particles, an organic resin agent and an antiviral agent. wherein the second layer contains inorganic particles, fluororesin particles, an antifungal agent and an antiviral agent, and the first layer has a water contact angle of 60 degrees or more and less than 110 degrees. .
　本開示によれば、長期にわたって粉塵付着抑制性能と防かび性能と抗ウイルス性能とを有するコーティング膜及びこれを備えた空気調和機を提供することができる。 According to the present disclosure, it is possible to provide a coating film having dust adhesion suppression performance, antifungal performance, and antivirus performance over a long period of time, and an air conditioner equipped with the coating film.
実施の形態１に係るコーティング膜の模式図である。1 is a schematic diagram of a coating film according to Embodiment 1. FIG. 実施の形態３に係る空気調和機の模式断面図である。FIG. 11 is a schematic cross-sectional view of an air conditioner according to Embodiment 3;
　以下、抗ウイルス性能を有するコーティング膜、及びコーティング膜の製造方法について図面等を参照しながら説明する。なお、図１を含む以下の図面では、各構成部材の相対的な寸法の関係及び形状等が実際のものとは異なる場合がある。また、以下の図面において、同一の符号を付したものは、同一又はこれに相当するものであり、このことは明細書の全文において共通することとする。そして、明細書全文に表わされている構成要素の形態は、あくまでも例示であって、明細書に記載された形態に限定するものではない。また、理解を容易にするために方向を表す用語（例えば「上」、「下」、「右」、「左」、「前」及び「後」等）を適宜用いるが、それらの表記は、説明の便宜上、そのように記載しているだけであって、装置あるいは部品の配置及び向きを限定するものではない。 A coating film with antiviral performance and a method for manufacturing the coating film will be described below with reference to the drawings. In the following drawings including FIG. 1, the relative dimensional relationship and shape of each constituent member may differ from the actual ones. Moreover, in the following drawings, the same reference numerals denote the same or corresponding parts, and this applies throughout the specification. The forms of the constituent elements shown in the entire specification are merely examples, and are not limited to the forms described in the specification. In order to facilitate understanding, terms representing directions (eg, "up", "down", "right", "left", "front", "back", etc.) are used as appropriate. For convenience of explanation only, such description is not intended to limit the arrangement and orientation of devices or components.
実施の形態１．
  図１は、実施の形態１に係るコーティング膜の模式図である。
　実施の形態１に係るコーティング膜１は、基材２の表面上の第一層３と、第一層３上に形成された第二層４からなる。第一層３は、球状樹脂粒子１０と有機樹脂剤５と抗ウイルス剤６と、を備える。また、第二層４は、無機粒子７とフッ素樹脂粒子８と防かび抗菌剤９と、抗ウイルス剤６とを備える。 Embodiment 1.
FIG. 1 is a schematic diagram of a coating film according to Embodiment 1. FIG.
A coating film 1 according to Embodiment 1 consists of a first layer 3 on the surface of a substrate 2 and a second layer 4 formed on the first layer 3 . The first layer 3 comprises spherical resin particles 10 , an organic resin agent 5 and an antiviral agent 6 . Also, the second layer 4 comprises inorganic particles 7 , fluororesin particles 8 , an antifungal agent 9 , and an antiviral agent 6 .
　第一層３は、球状樹脂粒子１０と有機樹脂剤５と抗ウイルス剤６を含む液体のコーティング組成物を基材２に塗布し、乾燥することで形成される。球状樹脂粒子１０は、液体中では凝集せずに分散するため、乾燥後の第一層３中でも分散して存在し、第一層３の表面には球状樹脂粒子１０の表面の一部が点在して露出する。また、第二層４は、無機粒子７とフッ素樹脂粒子８と防かび抗菌剤９と抗ウイルス剤６とを含む液体のコーティング組成物を第一層３上に塗布し、乾燥することで形成される。第一層３上に第二層４を形成する際、第一層３の表面に露出した球状樹脂粒子１０とフッ素樹脂粒子８が隣接した構造をとる。球状樹脂粒子１０とフッ素樹脂粒子８とが隣接した構造を形成するため、フッ素樹脂粒子８は、第二層４中で凝集することなく分散して存在し、且つ第二層４の表面にフッ素樹脂粒子８の表面の一部が露出した状態を形成する。また、第一層３は、第二層４との密着性を高める効果がある。したがって、空気調和機など、長期にわたり粉塵付着抑制が要求される部品への適用が好適である。 The first layer 3 is formed by applying a liquid coating composition containing the spherical resin particles 10, the organic resin agent 5, and the antiviral agent 6 to the substrate 2 and drying it. Since the spherical resin particles 10 are dispersed in the liquid without aggregating, they are dispersed even in the first layer 3 after drying, and a part of the surface of the spherical resin particles 10 is dotted on the surface of the first layer 3. Exist and expose. The second layer 4 is formed by applying a liquid coating composition containing inorganic particles 7, fluororesin particles 8, an antifungal agent 9, and an antiviral agent 6 onto the first layer 3, followed by drying. be done. When the second layer 4 is formed on the first layer 3, the spherical resin particles 10 exposed on the surface of the first layer 3 and the fluorine resin particles 8 are adjacent to each other. Since the spherical resin particles 10 and the fluororesin particles 8 form a structure in which they are adjacent to each other, the fluororesin particles 8 are dispersed in the second layer 4 without agglomeration, and fluorine is present on the surface of the second layer 4. A state is formed in which a part of the surface of the resin particle 8 is exposed. In addition, the first layer 3 has the effect of enhancing adhesion with the second layer 4 . Therefore, it is suitable for application to parts that require dust adhesion suppression over a long period of time, such as air conditioners.
　第二層４では、フッ素樹脂粒子８が分散して最表面に点在する構成を実現することで、空気中の汚染粒子の付着に関連する微小な領域で見れば親水性部分と疎水性部分が共存した表面とすることができる。無機粒子７は、疎水性の粉塵の付着抑制効果がある。フッ素樹脂粒子８は、親水性の粉塵の付着抑制効果がある。空気中の汚染粒子の付着に関連する微小な領域で見れば親水性部分と疎水性部分が共存した構成の表面は、吸湿時や乾燥時の表面の水分の移動が容易であり、表面に付着した親水性の粒子や疎水性の粒子を浮き上がらせて遊離させたり、固着しにくくしたりする効果もある。また、結露時には、空気中の汚染粒子の付着に関連する微小な領域で見たときに親水性部分また疎水性部分のどちらかのみで構成された表面に比べると、水が流れやすく浸透しやすいことから、付着した物質が非常に除去されやすいという効果もある。 In the second layer 4, by realizing a structure in which the fluororesin particles 8 are dispersed and scattered on the outermost surface, when viewed in a minute area related to the adhesion of contaminant particles in the air, the hydrophilic part and the hydrophobic part can be a surface on which The inorganic particles 7 have the effect of suppressing adherence of hydrophobic dust. The fluororesin particles 8 have the effect of suppressing adhesion of hydrophilic dust. In terms of microscopic areas related to the adhesion of contaminant particles in the air, the surface of the structure where the hydrophilic part and the hydrophobic part coexist makes it easy for moisture to move on the surface during moisture absorption and drying, and it adheres to the surface. It also has the effect of making hydrophilic particles and hydrophobic particles float and release them, or making them difficult to stick to each other. Also, when condensed, water flows and permeates easily compared to a surface composed only of either a hydrophilic portion or a hydrophobic portion when viewed in a minute area related to the adhesion of contaminant particles in the air. Therefore, there is also an effect that adhered substances are very easily removed.
　基材２は、特に制限されないが、金属素材及びプラスチック素材の部品が挙げられる。特に、油性及び水性の汚れが混在し汚れがつき易く且つ頻繁に清掃できない部材、例えば、空気調和機の熱交換器、ファン及びフラップ等の部材が好適である。また、本実施の形態によるコーティング組成物は、アクリル－スチレン－グラスファイバー（以下、ＡＳＧと略記する）樹脂等の表面に微小な溝及び微小な凹凸を有する基材に対して、粉塵の付着抑制効果を付与することができる。 The base material 2 is not particularly limited, but includes parts made of metal materials and plastic materials. In particular, it is suitable for members to which oily and water-based stains coexist, are easily soiled, and cannot be cleaned frequently, such as heat exchangers, fans, and flaps of air conditioners. In addition, the coating composition according to the present embodiment suppresses the adhesion of dust to a substrate having fine grooves and fine unevenness on the surface such as acrylic-styrene-glass fiber (hereinafter abbreviated as ASG) resin. effect can be given.
［第一層］
　第一層３の球状樹脂粒子１０は、特に限定されるものではなく、アクリル系樹脂粒子、シリコーン系樹脂粒子、ナイロン系樹脂粒子、スチレン系樹脂粒子、ポリエチレン系樹脂粒子、ベンゾグアナミン系樹脂粒子、フェノール系樹脂粒子、またはウレタン系樹脂粒子等を用いることができる。球状樹脂粒子１０は、アクリル系樹脂粒子あるいはシリコーン系樹脂粒子を用いることが好ましく、さらに好ましくシリコーン系樹脂粒子が好ましい。また、球状樹脂粒子１０は、有機系球状粒子として住友化学株式会社製真球状ポリアミド微粒子、群栄化学工業社製真球状フェノール樹脂、積水化学社製ミクロパール、またはモメンティブ社製トスパールなどが挙げられる。 [First layer]
The spherical resin particles 10 of the first layer 3 are not particularly limited, and are acrylic resin particles, silicone resin particles, nylon resin particles, styrene resin particles, polyethylene resin particles, benzoguanamine resin particles, phenol resin particles, urethane resin particles, or the like can be used. The spherical resin particles 10 are preferably acrylic resin particles or silicone resin particles, more preferably silicone resin particles. The spherical resin particles 10 include organic spherical particles such as spherical polyamide fine particles manufactured by Sumitomo Chemical Co., Ltd., spherical phenolic resin manufactured by Gunei Chemical Industry Co., Ltd., Micropearl manufactured by Sekisui Chemical Co., Ltd., and Tospearl manufactured by Momentive. .
　第一層３の水接触角は、６０度以上１１０度未満であることが好ましい。第一層３の水接触角が６０度未満であると、第二層４を形成するフッ素樹脂粒子８が良好に分散されないため好ましくない。水接触角が１１０度以上であると、第二層４を形成する際のコーティング剤の塗布性が悪化し、膜に欠陥が発生しやすくなるため好ましくない。球状樹脂粒子１０の平均粒径は、０．５μｍ以上１５.０μｍ以下であることが好ましく、優れた粉塵付着抑制を得ることができる。球状樹脂粒子１０の平均粒径が、０．５μｍ未満であると、第二層４を形成するフッ素樹脂が良好に分散されないため好ましくない。一方で、球状樹脂粒子１０の平均粒径が、１５.０μｍを超えると、第二層４の凹凸が大きくなり、粉塵が引っかかりやすくなるため好ましくない。 The water contact angle of the first layer 3 is preferably 60 degrees or more and less than 110 degrees. If the water contact angle of the first layer 3 is less than 60 degrees, the fluororesin particles 8 forming the second layer 4 will not be dispersed satisfactorily, which is not preferable. If the water contact angle is 110 degrees or more, the coatability of the coating agent when forming the second layer 4 is deteriorated, and defects are likely to occur in the film, which is not preferable. The average particle diameter of the spherical resin particles 10 is preferably 0.5 μm or more and 15.0 μm or less, and excellent dust adhesion suppression can be obtained. If the average particle diameter of the spherical resin particles 10 is less than 0.5 μm, the fluororesin forming the second layer 4 will not be dispersed well, which is not preferable. On the other hand, if the average particle size of the spherical resin particles 10 exceeds 15.0 μm, the unevenness of the second layer 4 becomes large and dust tends to be caught, which is not preferable.
　本開示に係る球状樹脂粒子１０の含有量は、第一層３の全体に対して０．１質量％以上１０．０質量％以下であることが好ましい。０．１質量％未満であると、フッ素樹脂粒子８が良好に分散されないため好ましくない。１０．０質量％を超えると、第二層４の凹凸が大きくなり、粉塵が引っかかりやすくなるため好ましくない。 The content of the spherical resin particles 10 according to the present disclosure is preferably 0.1% by mass or more and 10.0% by mass or less with respect to the entire first layer 3. If it is less than 0.1% by mass, the fluororesin particles 8 will not be dispersed well, which is not preferable. If it exceeds 10.0% by mass, the unevenness of the second layer 4 becomes large and dust tends to be caught, which is not preferable.
　また、球状樹脂粒子１０は、最短径Ｓと最長径Ｌの比Ｓ／Ｌが、０．７以上が好ましく、さらに好ましくは０．８以上、特に好ましくは０．９以上である。０．７未満であると、第二層４を形成するフッ素樹脂粒子８が良好に分散されないため好ましくない。 In addition, the spherical resin particles 10 preferably have a ratio S/L of the shortest diameter S to the longest diameter L of 0.7 or more, more preferably 0.8 or more, and particularly preferably 0.9 or more. If it is less than 0.7, the fluororesin particles 8 forming the second layer 4 are not well dispersed, which is not preferable.
　有機樹脂剤５はエポキシ樹脂、ポリエステル樹脂、メラミン樹脂、エチレン－酢酸ビニル共重合体、ポリビニルブチラール、スチレン系樹脂、ポリエステルウレタン、アクリルウレタン、ポリアミド、ポリエステル樹脂、またはアクリル系樹脂などがあげられる。アクリル系樹脂は、（メタ）アクリル酸、（メタ）アクリル酸エステル等に由来する構造単位を有する重合体である。アクリル系樹脂は架橋構造を含んでいてもよく、架橋構造は架橋性の官能基を有する単量体に由来して形成される。架橋性の官能基としては、例えば、イソシアネート基、オキサゾリン基、メチレン基、カルボジイミド基、またはアジリジン基などが挙げられる。また、架橋構造はメラミン等に由来して形成されていてもよい。アクリル系樹脂を含む樹脂組成物としては、付着性を有する樹脂層を形成可能な市販品から適宜選択すればよく、例えば、ＤＩＣ社製のボンコートシリーズ、または日本パーカライジング社製のＴＯＰシリーズ等を挙げることができる。エポキシ系樹脂は、分子内にエポキシ基を有する単量体に由来する構造単位を含んで構成される重合体である。エポキシ系樹脂は、架橋構造を含んでいてもよく、上述した架橋構造は架橋性の官能基を有する単量体に由来して形成される。エポキシ系樹脂を含む樹脂組成物としては、付着性を有する樹脂層を形成可能な市販品から適宜選択すればよく、例えば、ＤＩＣ社製のＥＰＩＣＲＯＮ等を挙げることができる。また、エポキシ系樹脂を含む樹脂組成物としては、１種単独で含んでいてもよく、２種以上を組合せて含んでいてもよい。 The organic resin agent 5 includes epoxy resin, polyester resin, melamine resin, ethylene-vinyl acetate copolymer, polyvinyl butyral, styrene resin, polyester urethane, acrylic urethane, polyamide, polyester resin, acrylic resin, and the like. Acrylic resins are polymers having structural units derived from (meth)acrylic acid, (meth)acrylic acid esters, and the like. The acrylic resin may contain a crosslinked structure, and the crosslinked structure is formed from a monomer having a crosslinkable functional group. Crosslinkable functional groups include, for example, an isocyanate group, an oxazoline group, a methylene group, a carbodiimide group, an aziridine group, and the like. Moreover, the crosslinked structure may be derived from melamine or the like. The resin composition containing an acrylic resin may be appropriately selected from commercially available products capable of forming an adhesive resin layer. can be mentioned. Epoxy-based resins are polymers comprising structural units derived from monomers having epoxy groups in their molecules. The epoxy resin may contain a crosslinked structure, and the above-described crosslinked structure is formed from a monomer having a crosslinkable functional group. The resin composition containing an epoxy resin may be appropriately selected from commercially available products capable of forming an adhesive resin layer, and examples thereof include EPICRON manufactured by DIC Corporation. Moreover, as a resin composition containing an epoxy resin, it may contain individually by 1 type, and may contain it in combination of 2 or more types.
　抗ウイルス剤６は、無機系または有機系の材料が用いることができる。無機系の抗ウイルス剤６としては、銀、銅、亜鉛、チタン、タングステン等から選ばれる少なくとも１種の金属を含む金属酸化物あるいは金属水和物の粒子を用いることもできる。例えば、酸化銅（Ｉ） 、酸化銅（ＩＩ） 、炭酸銅（ＩＩ）、水酸化銅（ＩＩ）、塩化銅（ＩＩ）、銀ナノ粒子及び銅ナノ粒子の少なくとも一方が担持された酸化アルミニウム（ＩＩＩ）、銀ナノ粒子及び銅ナノ粒子の少なくとも一方が担持された二酸化ケイ素、銀ナノ粒子及び銅ナノ粒子の少なくとも一方が担持された酸化亜鉛、銀ナノ粒子及び銅ナノ粒子の少なくとも一方が担持された酸化チタン、または酸化タングステン、銀ナノ粒子及び銅ナノ粒子の少なくとも一方が担持されたリン酸カルシウム等が挙げられる。シナネンゼオミック株式会社の銀系無機添加剤（ＥＸ２０７０６Ｄ）、または太平化学産業株式会社の銀系無機添加剤（ＥＸ２０７０６Ｂ）などが挙げられる。銀イオン及び銅イオンの少なくとも一方で交換されたゼオライトは、さらに亜鉛イオン等の他の金属イオンで交換されていてもよい。更に、ランタンモリブデン酸化物系無機フィラーＬａ２Ｍｏ２Ｏ９（ＬＭＯ）などが挙げられる。尚、ここでいう銀ナノ粒子は、直径が１～１００ｎｍ程度の銀粒子を含む銀ナノ粒子を指し、銅ナノ粒子は、直径が１～１００ｎｍ程度の銅粒子を含む銅ナノ粒子を指す。 An inorganic or organic material can be used for the antiviral agent 6 . As the inorganic antiviral agent 6, metal oxide or metal hydrate particles containing at least one metal selected from silver, copper, zinc, titanium, tungsten and the like can be used. For example, copper (I) oxide, copper (II) oxide, copper (II) carbonate, copper (II) hydroxide, copper (II) chloride, aluminum oxide supporting at least one of silver nanoparticles and copper nanoparticles ( III), silicon dioxide carrying at least one of silver nanoparticles and copper nanoparticles, zinc oxide carrying at least one of silver nanoparticles and copper nanoparticles, and at least one of silver nanoparticles and copper nanoparticles carrying titanium oxide, or calcium phosphate supporting at least one of tungsten oxide, silver nanoparticles, and copper nanoparticles. A silver-based inorganic additive (EX20706D) available from Sinanen Zeomic Co., Ltd., or a silver-based inorganic additive (EX20706B) available from Taihei Kagaku Sangyo Co., Ltd. may be used. The zeolite exchanged with at least one of silver ions and copper ions may be further exchanged with other metal ions such as zinc ions. Furthermore, lanthanum molybdenum oxide-based inorganic fillers La2Mo2O9 (LMO) and the like are included. The silver nanoparticles here refer to silver nanoparticles containing silver particles with a diameter of about 1 to 100 nm, and the copper nanoparticles refer to copper nanoparticles containing copper particles with a diameter of about 1 to 100 nm.
　有機系の抗ウイルス剤６としては、抗微生物樹脂、スルホン酸系界面活性剤、銅のアルコキシド、及び、ビス型第四級アンモニウム塩からなる群から選択される少なくとも１種であることが望ましい。上記有機系の抗ウイルス剤６が、抗微生物樹脂、スルホン酸系界面活性剤、スルホン酸含有ポリマー、及び、ビス型第四級アンモニウム塩、マルチブロックポリマからなる群から選択される少なくとも１種であると、有機系の抗ウイルス剤６はコーティング膜の全体に広がり、高い抗微生物活性を有する抗微生物部材となる。有機系の抗ウイルス剤６は、べンズイミダゾール系として、２―４チアゾリルべンズイミダゾールメチル３ベンズイミダロールカルバーメート、第四級アンモニウム塩として、ポリオキシエチレン（ジメチルイミノ）エチレン（ジメチルイミノ）エチレンクロライド、オクタデシルジメチル（３―トリエトキシシリルプロピル）アンモニウムクロライド、塩化ベンザルコニウム、塩化ベンセントニウム、または塩化ジアルキルジメチルアンモニウムなどがあげられる。 The organic antiviral agent 6 is preferably at least one selected from the group consisting of antimicrobial resins, sulfonic acid surfactants, copper alkoxides, and bis-type quaternary ammonium salts. The organic antiviral agent 6 is at least one selected from the group consisting of antimicrobial resins, sulfonic acid-based surfactants, sulfonic acid-containing polymers, bis-type quaternary ammonium salts, and multi-block polymers. When there is, the organic antiviral agent 6 spreads over the entire coating film and becomes an antimicrobial member having high antimicrobial activity. The organic antiviral agent 6 includes 2-4 thiazolylbenzimidazole methyl-3-benzimidalol carbamate as a benzimidazole, and polyoxyethylene (dimethylimino) ethylene (dimethylimino) as a quaternary ammonium salt. Examples include ethylene chloride, octadecyldimethyl(3-triethoxysilylpropyl)ammonium chloride, benzalkonium chloride, bencentonium chloride, and dialkyldimethylammonium chloride.
　第一層３の膜厚は１.０μｍ以上１０.０μｍ以下であり、第二層４は０．１μｍ以上５．０μｍ以下であることが好ましい。第一層の膜厚は２.０μｍ以上８.０μｍ以下であることが更に好ましい。第一層の膜厚が２.０μｍ以上８.０μｍ以下であることによって、優れた抗ウイルス性と長期耐久性を発揮することができる。第二層４の膜厚は０．２μｍ以上４．５μｍ以下であることが更に好ましい。第二層４の膜厚が０．２μｍ以上４．５μｍ以下であることによって、優れた抗ウイルス性と粉塵付着抑制性能を発揮することができる。第一層３の膜厚は、成膜に用いる組成物の濃度や、成膜に用いるバーコーターＮｏ．の選択などによって調整することができる。また、膜厚は、蛍光Ｘ線、赤外膜厚計、またはコーティング膜剥離による質量測定などで測定することが可能である。尚、第一層３の膜厚は、有機樹脂剤５によって形成された厚さを指し、第二層４の膜厚は、無機粒子７と抗ウイルス剤６とフッ素樹脂粒子８と防かび抗菌剤９とを含む厚さを指す。 The film thickness of the first layer 3 is preferably 1.0 μm or more and 10.0 μm or less, and the thickness of the second layer 4 is preferably 0.1 μm or more and 5.0 μm or less. More preferably, the film thickness of the first layer is 2.0 μm or more and 8.0 μm or less. When the film thickness of the first layer is 2.0 μm or more and 8.0 μm or less, excellent antiviral properties and long-term durability can be exhibited. More preferably, the film thickness of the second layer 4 is 0.2 μm or more and 4.5 μm or less. When the film thickness of the second layer 4 is 0.2 μm or more and 4.5 μm or less, excellent antiviral properties and dust adhesion suppression performance can be exhibited. The film thickness of the first layer 3 depends on the concentration of the composition used for film formation and the bar coater No. used for film formation. can be adjusted by selecting Moreover, the film thickness can be measured by fluorescent X-ray, infrared film thickness meter, mass measurement by coating film peeling, or the like. The thickness of the first layer 3 refers to the thickness formed by the organic resin agent 5, and the thickness of the second layer 4 includes the inorganic particles 7, the antiviral agent 6, the fluororesin particles 8, and the antifungal and antibacterial agents. It refers to the thickness including the agent 9.
［第二層］
　第二層４を形成する無機粒子７は、ＳｉＯ２、Ａｌ２Ｏ３、Ｓｂ２Ｏ５、ＺｒＯ２、ＴｉＯ２、Ｆｅ２Ｏ３、ＣｅＯ２、ＡｇＯ、ＣｕＯ、Ｃｕ２Ｏ、ＺｎＯおよびこれらの複合酸化物または混合物から選ばれる少なくとも１種であることを特徴とする。本開示の無機粒子７は、親水性のシリカ粒子、チタン粒子が好ましい。無機粒子７が球状粒子であることにより、さらに、この効果を高めることができる。 [Second layer]
The inorganic particles 7 forming the second layer 4 are at least one selected from SiO2, Al2O3, Sb2O5, ZrO2, TiO2, Fe2O3, CeO2, AgO, CuO, Cu2O, ZnO, and composite oxides or mixtures thereof. characterized by The inorganic particles 7 of the present disclosure are preferably hydrophilic silica particles and titanium particles. When the inorganic particles 7 are spherical particles, this effect can be further enhanced.
　シリカ粒子の平均粒径は、光散乱法により測定した場合、平均粒径が５ｎｍ以上１００ｎｍ程度以下であることが好ましい。特に、５ｎｍ以上１００ｎｍ以下の範囲内にあるシリカ粒子では、１つのシリカ粒子について、シリカ粒子重量のおおよそ１５～３０％の重量に相当する表面部分が半ば水に溶解した状態となっている。平均粒径が５ｎｍ未満のシリカ粒子は、半ば水に溶解した状態のシリカ成分の割合が高くなりすぎて、シリカ粒子同士が凝集してしまう。平均粒径が１００ｎｍ以下のシリカ粒子であれば、コーティング膜により反射する光の散乱が小さくなるため、コーティング膜の透明性が向上し、基材の色調や風合いの変化を抑え、基材の色調や風合いを損なわないようにすることができる。また、無機粒子７として、平均粒径が５ｎｍ以上１００ｎｍ以下のシリカ粒子を使用することで、得られるコーティング膜中のシリカ成分が、緻密ではありながらシリカ粒子間に微細な空隙を有するものとなる。緻密さにより膜厚を小さくできるとともに、空隙により汚染の原因となる粒子との分子間力、つまり粒子との付着力が小さくなるため、固着させにくくする効果がある。 The average particle size of the silica particles is preferably about 5 nm or more and about 100 nm or less when measured by a light scattering method. In particular, for silica particles within the range of 5 nm or more and 100 nm or less, the surface portion corresponding to about 15 to 30% of the weight of the silica particles is partially dissolved in water. Silica particles having an average particle diameter of less than 5 nm have a too high ratio of silica components half dissolved in water, resulting in aggregation of silica particles. If the silica particles have an average particle size of 100 nm or less, the scattering of light reflected by the coating film is reduced, so the transparency of the coating film is improved, the change in color tone and texture of the substrate is suppressed, and the color tone of the substrate is reduced. and texture can be preserved. In addition, by using silica particles having an average particle size of 5 nm or more and 100 nm or less as the inorganic particles 7, the silica component in the obtained coating film is dense but has fine voids between the silica particles. . The denseness makes it possible to reduce the film thickness, and the voids reduce the intermolecular force with the particles that cause contamination, that is, the adhesive force with the particles, which has the effect of making adhesion difficult.
　本実施の形態で用いるフッ素樹脂粒子８は、水性媒体中に分散するものであれば特に制限されない。フッ素樹脂粒子の具体例としては、ＰＴＦＥ（ポリテトラフルオロエチレン）、ＦＥＰ（テトラフルオロエチレン・ヘキサフルオロプロピレン共重合体）、ＰＦＡ（テトラフルオロエチレン・パーフルオロアルキルビニルエーテル共重合体）、ＥＴＦＥ（エチレン・テトラフルオロエチレン共重合体）、ＥＣＴＦＥ（エチレン・クロロトリフルオロエチレン共重合体）、ＰＶＤＦ（ポリフッ化ビニリデン）、ＰＣＴＦＥ（ポリクロロトリフルオロエチレン）、ＰＶＦ（ポリフッ化ビニル）、これらの共重合体または混合物から選ばれる少なくとも１種が挙げられる。上記フッ素樹脂粒子に他の樹脂粒子を混合してもよい。界面活性剤やポリマー中に含まれる親水基の効果で水性媒体中に安定分散したディスパージョンの形態を有するものを使用することもできる。 The fluororesin particles 8 used in the present embodiment are not particularly limited as long as they are dispersed in an aqueous medium. Specific examples of the fluororesin particles include PTFE (polytetrafluoroethylene), FEP (tetrafluoroethylene-hexafluoropropylene copolymer), PFA (tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer), ETFE (ethylene- Tetrafluoroethylene copolymer), ECTFE (ethylene-chlorotrifluoroethylene copolymer), PVDF (polyvinylidene fluoride), PCTFE (polychlorotrifluoroethylene), PVF (polyvinyl fluoride), copolymers thereof or At least one selected from mixtures is included. Other resin particles may be mixed with the fluororesin particles. It is also possible to use those having the form of a dispersion stably dispersed in an aqueous medium due to the effect of hydrophilic groups contained in surfactants or polymers.
　フッ素樹脂粒子８の平均粒径は、光散乱法により測定した場合、５０ｎｍ以上５００ｎｍ以下が好ましく、１００ｎｍ以上２５０ｎｍ以下がより好ましい。このような平均粒径を有するフッ素樹脂粒子８は、コーティング組成物中に分散しやすく、且つ無機粒子に対して十分大きいため、コーティング膜の表面に露出しやすくなる。平均粒径が５００ｎｍを超えると、コーティング膜の表面に露出しているフッ素樹脂粒子の領域が大きくなりすぎて疎水性の汚染物質が付着しやすくなる場合や、コーティング膜の凹凸が大きくなり汚染物質が固着し易くなる場合がある。一方、フッ素樹脂粒子の平均粒径が５０ｎｍ未満であると、コーティング膜の表面にフッ素樹脂粒子８が露出しにくくなる場合がある。 The average particle size of the fluororesin particles 8 is preferably 50 nm or more and 500 nm or less, more preferably 100 nm or more and 250 nm or less, when measured by a light scattering method. The fluororesin particles 8 having such an average particle size are easily dispersed in the coating composition and are sufficiently large relative to the inorganic particles, so that they are easily exposed on the surface of the coating film. If the average particle diameter exceeds 500 nm, the area of the fluororesin particles exposed on the surface of the coating film becomes too large, and hydrophobic contaminants tend to adhere, or the unevenness of the coating film increases, causing contaminants to enter the coating film. may easily stick. On the other hand, when the average particle size of the fluororesin particles is less than 50 nm, the fluororesin particles 8 may be difficult to be exposed on the surface of the coating film.
　防かび抗菌剤９は、有機ヨウ素化合物、イソチアゾリン化合物及びアラニン化合物からなる群から選択される化合物であって、水に容易に溶解するものであればよい。水溶性の防かび剤を配合すると、水性媒体に防かび剤成分が溶解し、コーティング膜を形成した際に防かび剤成分が全面にわたって分散されることになる。有機ヨウ素化合物の具体例としては、３－ヨード－２－プロピニルビチルカーバメイト、ジヨードメチル－ｐ－トルイルスルホン、ｐ－クロロフェニル－３－ヨードプロパルギルフォルマール等が挙げられる。イソチアゾリン化合物の具体例としては、５－クロロ－２－メチル－４－イソチアゾリン－３－オン、２－メチル－４－イソチアゾリン－３－オン、２－ｎ－オクチル－４－イソチアゾリン－３－オン、４，５－ジクロロ－２－ｎ－オクチル－４－イソチアゾリン－３－オン、２－メチル－４，５－トリメチレン－４－イソチアゾリン－３－オン、１，２－ベンゾイソチアゾリン－３－オン、ｎ－ブチル－ベンゾイソチアゾリン－３－オン等が挙げられる。アラニン化合物の具体例としては、Ｎ－ラウリル－β－アラニン等が挙げられる。有機ヨウ素化合物、イソチアゾリン化合物及びアラニン化合物は、単独で用いてもよいし、２種以上を組み合わせて用いてもよい。本開示で用いられる水分散性防かび剤粒子は、イミダゾール化合物、トリアゾール化合物、ピリチオン化合物、チアゾール化合物及びチオフェン化合物からなる群から選択される化合物であって、水性媒体中に分散できるものであればよい。この水分散性防かび剤粒子は、２０℃における水への溶解度が０．５ｍｇ／Ｌ以下であることが好ましい。溶解度が０．５ｍｇ／Ｌを超えると、水回り部品など水が多く存在する環境下において効果が限定されてしまう。イミダゾール化合物の具体例としては、２－ベンズイミダゾールカルバミン酸メチル、１－（ブチルカルバモイル）－２－ベンズイミダゾールカルバミン酸メチル、チアベンダゾール等が挙げられる。トリアゾール化合物の具体例としては、２－（４－クロロフェニル）－３－シクロプロピル－１－（１Ｈ－１，２，４－トリアゾール－１－イル）－ブタン－２－オール、４，４－ジメチル－３－（１Ｈ－１，２，４－トリアゾール－１－イルメチル）ペンタン－３－オール等が挙げられる。ピリチオン化合物の具体例としては、ジンクピリチオン、ナトリウムピリチオン等が挙げられる。チアゾール化合物の具体例としては、２－（４－チオシアノメチルチオ）ベンゾチアゾール等が挙げられる。チオフェン化合物の具体例としては、３，３，４，４－テトラクロロテトラヒドロチオフェン－１，１－ジオキシドなど３，３，４－トリクロロテトラヒドロチオフェン－１，１－ジオキシド、３，３，４，４－テトラクロロテトラヒドロチオフェン－１，１－ジオキシド等が挙げられる。これらの化合物は、単独で用いてもよいし、２種以上を組み合わせて用いてもよい。 The antifungal and antibacterial agent 9 is a compound selected from the group consisting of organic iodine compounds, isothiazoline compounds and alanine compounds, as long as it is easily soluble in water. When a water-soluble antifungal agent is blended, the antifungal agent component dissolves in the aqueous medium, and when the coating film is formed, the antifungal agent component is dispersed over the entire surface. Specific examples of organic iodine compounds include 3-iodo-2-propynyl bityl carbamate, diiodomethyl-p-toluylsulfone, p-chlorophenyl-3-iodopropargyl formal, and the like. Specific examples of isothiazolin compounds include 5-chloro-2-methyl-4-isothiazolin-3-one, 2-methyl-4-isothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one, 2-methyl-4,5-trimethylene-4-isothiazolin-3-one, 1,2-benzisothiazolin-3-one, n -Butyl-benzisothiazolin-3-one and the like. Specific examples of alanine compounds include N-lauryl-β-alanine and the like. The organic iodine compound, isothiazoline compound and alanine compound may be used alone or in combination of two or more. The water-dispersible fungicide particles used in the present disclosure are compounds selected from the group consisting of imidazole compounds, triazole compounds, pyrithione compounds, thiazole compounds and thiophene compounds, as long as they are dispersible in an aqueous medium. good. The water-dispersible fungicide particles preferably have a solubility in water at 20° C. of 0.5 mg/L or less. If the solubility exceeds 0.5 mg/L, the effect will be limited in an environment where a lot of water exists such as plumbing parts. Specific examples of imidazole compounds include methyl 2-benzimidazole carbamate, 1-(butylcarbamoyl)-2-methyl benzimidazole carbamate, and thiabendazole. Specific examples of triazole compounds include 2-(4-chlorophenyl)-3-cyclopropyl-1-(1H-1,2,4-triazol-1-yl)-butan-2-ol, 4,4-dimethyl -3-(1H-1,2,4-triazol-1-ylmethyl)pentan-3-ol and the like. Specific examples of pyrithione compounds include zinc pyrithione and sodium pyrithione. Specific examples of thiazole compounds include 2-(4-thiocyanomethylthio)benzothiazole and the like. Specific examples of thiophene compounds include 3,3,4,4-tetrachlorotetrahydrothiophene-1,1-dioxide, 3,3,4-trichlorotetrahydrothiophene-1,1-dioxide, 3,3,4,4 -tetrachlorotetrahydrothiophene-1,1-dioxide and the like. These compounds may be used alone or in combination of two or more.
　防かび抗菌剤９の含有量は、無機粒子と疎水性樹脂粒子との合計質量に対して、０．１質量％以上２５．０質量％以下であり、好ましくは１．０質量％以上１５．０質量％以下である。含有量が０．１質量％未満であると、かびを抑制する効果が十分に得られない。一方、含有量が２５．０質量％を超えると、コーティング膜の凹凸が大きくなりすぎて汚れが付着しやすくなり、汚れから菌糸の発芽が起こる。 The content of the antifungal and antibacterial agent 9 is 0.1% by mass or more and 25.0% by mass or less, preferably 1.0% by mass or more and 15.0% by mass or less, based on the total mass of the inorganic particles and the hydrophobic resin particles. It is 0% by mass or less. If the content is less than 0.1% by mass, the effect of suppressing mold cannot be sufficiently obtained. On the other hand, if the content exceeds 25.0% by mass, the unevenness of the coating film becomes too large, making it easier for dirt to adhere, and mycelia to germinate from the dirt.
　また、防かび抗菌剤９の平均粒径は、０．１μｍ以上３．０μｍ以下であることが好ましい。平均粒径が０．１μｍ未満であると、コーティング膜表面に付着した胞子から発芽する菌糸の発育を抑制する効果が乏しい。一方、平均粒径が３．０μｍを超えると、コーティング膜の凹凸が大きくなりすぎて汚れが付着しやすくなり、汚れからかびの発芽が起こる。なお、本開示で用いられる水分散性防かび剤粒子の平均粒径は、大塚電子株式会社製ＥＬＳＺ－２により測定された値である。 In addition, the average particle diameter of the antifungal and antibacterial agent 9 is preferably 0.1 μm or more and 3.0 μm or less. If the average particle size is less than 0.1 μm, the effect of suppressing the growth of hypha germinated from spores adhering to the surface of the coating film is poor. On the other hand, if the average particle diameter exceeds 3.0 μm, the unevenness of the coating film becomes too large, making it easier for stains to adhere, causing germination of fungi from the stains. The average particle diameter of the water-dispersible fungicide particles used in the present disclosure is a value measured by ELSZ-2 manufactured by Otsuka Electronics Co., Ltd.
　抗ウイルス剤６は、第一層３で述べたものと同様に実施することができる。 The antiviral agent 6 can be implemented in the same manner as described in the first layer 3.
  以上のとおり、本実施の形態１に示す、基材上に形成された第一層と、第一層上に形成された第二層とを備え、第一層は球状樹脂粒子と有機樹脂剤と抗ウイルス剤とを含み、第二層は無機粒子とフッ素樹脂粒子と防かび抗菌剤と抗ウイルス剤とを含み、さらに、前記第一層の水接触角が６０度以上１１０度未満であるコーティング膜は、長期にわたって粉塵付着抑制性能と防かび性能と抗ウイルス性能を発揮するという効果を奏する。 As described above, the first layer includes the first layer formed on the base material and the second layer formed on the first layer, and the first layer includes the spherical resin particles and the organic resin agent. and an antiviral agent, the second layer contains inorganic particles, fluororesin particles, an antifungal agent, and an antiviral agent, and the first layer has a water contact angle of 60 degrees or more and less than 110 degrees. The coating film has the effect of exhibiting dust adhesion suppression performance, antifungal performance, and antiviral performance over a long period of time.
実施の形態２．
　実施の形態２は、基材２にコーティング膜１を形成する製造工程に関するものである。本実施の形態２に示す基材２にコーティング膜１を形成する製造工程は、第一層３及び第二層４のそれぞれを形成するコーティング組成物を調合する工程と、基材２に第一層３を形成する第１工程と、第一層３上に第二層４を形成する第２工程とを含む。コーティング組成物は、媒体として水を含む水系組成物である。第１工程の第一層３のコーティング剤の基材２への付与方法としては、例えばバーコーター、ロールコーター、またはフローコーター等の通常用いられる塗布装置を用いる方法が挙げられる。また、組成物の付与量は目的とする層の厚み等に応じて適宜選択すればよい。 Embodiment 2.
Embodiment 2 relates to a manufacturing process for forming coating film 1 on substrate 2 . The manufacturing process for forming the coating film 1 on the substrate 2 shown in the second embodiment includes a step of preparing a coating composition that forms each of the first layer 3 and the second layer 4, and a step of A first step of forming a layer 3 and a second step of forming a second layer 4 on the first layer 3 are included. A coating composition is a water-based composition containing water as a medium. Examples of the method of applying the coating agent of the first layer 3 to the substrate 2 in the first step include a method using a commonly used coating device such as a bar coater, a roll coater, or a flow coater. Also, the amount of the composition to be applied may be appropriately selected according to the thickness of the desired layer and the like.
　第２工程の付与方法としては、例えば、バーコーター、ロールコーター、またはフローコーター等の通常用いられる塗布装置を用いる方法が挙げられる。第２工程のコーティング組成物に対する無機粒子７の添加量は、０．０１質量％以上５．０質量％以下が好ましく、０．０２質量％以上、４．０質量％以下がさらに好ましい。０．０１質量％未満であると、無機粒子７がまばらになって親水層膜の基体を形成できず十分な粉塵付着抑制が得られない。５．０質量％を超えると、親水層膜の基体が厚くなりすぎて、クラックが生じやすくなるため好ましくない。また、着臭も発生しやすくなるため、好ましくない。 Examples of the application method in the second step include a method using a commonly used coating device such as a bar coater, roll coater, or flow coater. The amount of the inorganic particles 7 added to the coating composition in the second step is preferably 0.01% by mass or more and 5.0% by mass or less, more preferably 0.02% by mass or more and 4.0% by mass or less. If it is less than 0.01% by mass, the inorganic particles 7 become sparse and the base of the hydrophilic layer film cannot be formed, resulting in insufficient dust adhesion suppression. If it exceeds 5.0% by mass, the substrate of the hydrophilic layer film becomes too thick and cracks are likely to occur, which is not preferable. In addition, odor is likely to occur, which is not preferable.
　フッ素樹脂粒子８の含有量は、コーティング組成物に対して０．０１質量％以上５．０質量％以下が好ましい。フッ素樹脂粒子８の含有量が所定値以上であることによって、優れた防汚性を発揮することができる。フッ素樹脂粒子８の含有量が所定値を超えると、フッ素樹脂粒子８に基づく疎水性が向上し過ぎてしまい、親水性が低下してしまう。また、凹凸が多くなり、粉塵が引っかかるなどして好ましくない。上記記載の方法により、基材２の表面に粉塵付着抑制を有するコーティング膜１を形成することができる。 The content of the fluororesin particles 8 is preferably 0.01% by mass or more and 5.0% by mass or less with respect to the coating composition. By setting the content of the fluororesin particles 8 to a predetermined value or more, excellent antifouling properties can be exhibited. When the content of the fluororesin particles 8 exceeds a predetermined value, the hydrophobicity based on the fluororesin particles 8 is excessively improved, and the hydrophilicity is lowered. In addition, it is not preferable because the unevenness increases and dust is caught on the surface. By the method described above, the coating film 1 having dust adhesion suppression can be formed on the surface of the substrate 2 .
　基材２へのコーティング膜１の形成は、基材２へコーティング組成物を塗布する工程と、乾燥する工程とを経て実施される。コーティング膜１の形成にあたっては、第一層３を形成した後、第二層４を形成する。尚、第一層３及び第二層４の形成方法は、以下に示す塗布方法及び乾燥方法を任意に適用可能である。コーティング組成物をスプレー、ローラー、または浸漬での塗布が可能で、常温の自然乾燥で処理が可能である。温風やオーブン加熱で反応を促進することで、より強固なコーティング膜とすることが出来る。この場合の加熱は、４０℃以上、２５０℃以下が好ましい。４０℃未満では、加熱には乾燥促進の効果しかない。２５０℃を超えるような温度ではコーティング膜１の熱劣化により、クラック等が生じることがあり好ましくない。また、コーティング組成物への浸漬時間やスプレーの吹き付け時間を長くする方法がある。この方法で接触時間を１０秒以上、好ましくは３０秒以上にすることで十分なコーティング膜１を形成することが出来る。１０秒未満では、通常塗布と差は認められない。３０秒を超える時間では、時間が延びても効果にはほとんど変化がなく、所要時間が長くなるだけという問題があり好ましくない。他の方法として、コーティング液または被コーティング物の温度を上げる方法もある。この温度を、３０℃以上、６０℃以下にすることで、十分な反応を進めやすい。３０℃未満では加熱の効果が小さすぎる。６０℃を超える温度では、コーティング液の蒸発が激しく、乾燥が速くなる分、均質な塗布が難しくなるため好ましくない。 The formation of the coating film 1 on the substrate 2 is carried out through a step of applying the coating composition to the substrate 2 and a drying step. In forming the coating film 1, after forming the first layer 3, the second layer 4 is formed. As for the method of forming the first layer 3 and the second layer 4, the following coating method and drying method can be arbitrarily applied. The coating composition can be applied by spraying, roller, or dipping, and allowed to air dry at ambient temperature. By accelerating the reaction with hot air or oven heating, a stronger coating film can be obtained. The heating in this case is preferably 40° C. or higher and 250° C. or lower. Below 40°C, heating only has the effect of accelerating drying. If the temperature exceeds 250° C., cracks or the like may occur due to thermal deterioration of the coating film 1, which is not preferable. There is also a method of lengthening the immersion time in the coating composition or the spraying time. By this method, a sufficient coating film 1 can be formed by setting the contact time to 10 seconds or more, preferably 30 seconds or more. If the time is less than 10 seconds, no difference from normal coating is observed. If the time exceeds 30 seconds, the effect hardly changes even if the time is extended, and there is a problem that the required time is lengthened, which is not preferable. Another method is to raise the temperature of the coating liquid or the object to be coated. By setting this temperature to 30° C. or higher and 60° C. or lower, the reaction can proceed sufficiently. If the temperature is less than 30°C, the effect of heating is too small. A temperature exceeding 60° C. is not preferable because the coating liquid evaporates violently and dries quickly, making uniform coating difficult.
実施の形態３．
　図２は、実施の形態３に係る空気調和機の室内機１００の断面模式図である。室内機１００は、空気調和機の枠体である室内機本体１１０をはじめ、室内機１００を構成する部品の一例として、ドレンパン１１３、ドレンパン１１４、送風ファン１１５、風路壁１１６、熱交換器１１７、熱交換器１１８、熱交換器１１９、上下風向可変ベーン１２０及び前面パネル１２１を備えた例を示す。なお、実施の形態１に係るコーティング膜１と同一の機能及び作用を有する構成要素については、同一の符号を付してその説明を省略する。 Embodiment 3.
FIG. 2 is a schematic cross-sectional view of the indoor unit 100 of the air conditioner according to Embodiment 3. As shown in FIG. The indoor unit 100 includes an indoor unit main body 110 which is a frame body of the air conditioner, and drain pans 113 and 114, a fan 115, an air passage wall 116, and a heat exchanger 117 as examples of parts constituting the indoor unit 100. , a heat exchanger 118 , a heat exchanger 119 , an up/down wind direction variable vane 120 and a front panel 121 . Components having the same functions and actions as those of the coating film 1 according to Embodiment 1 are denoted by the same reference numerals, and descriptions thereof are omitted.
　室内機本体１１０の前面には、前面パネル１２１が開閉可能に取り付けられる。室内機本体１１０の上面側には、空気調和機の室内機１００が据え付けられる室内から空気を吸い込むための吸込口１１１が形成されている。室内機本体１１０の下面側には、室内に空気を吹き出すための吹出口１１２が形成されている。吹出口１１２には、上下風向可変ベーン１２０が回転自在に取り付けられている。上下風向可変ベーン１２０は、吹出口１１２から吹き出す気流の上下の向きを調節する。 A front panel 121 is attached to the front surface of the indoor unit main body 110 so that it can be opened and closed. A suction port 111 for sucking air from the room in which the indoor unit 100 of the air conditioner is installed is formed on the upper surface side of the indoor unit main body 110 . A blowout port 112 for blowing air into the room is formed on the lower surface side of the indoor unit main body 110 . A vertical wind direction variable vane 120 is rotatably attached to the outlet 112 . The vertical wind direction variable vane 120 adjusts the vertical direction of the airflow blown out from the outlet 112 .
　送風ファン１１５は、室内機本体１１０の内部に設置される。送風ファン１１５は、空気を室内機本体１１０の内部に吸い込むとともに、吸い込んだ空気を室内機本体１１０の外部に吹き出す。本実施の形態において、送風ファン１１５は、クロスフローファンである。 The blower fan 115 is installed inside the indoor unit body 110 . The blower fan 115 sucks air into the indoor unit main body 110 and blows the sucked air out of the indoor unit main body 110 . In this embodiment, blower fan 115 is a cross-flow fan.
　熱交換器１１７、熱交換器１１８及び熱交換器１１９は、室内機本体１１０の内部に配置される。熱交換器１１７は送風ファン１１５の背面側の上部に配置され、熱交換器１１８は送風ファン１１５の前面側の上部に配置され、熱交換器１１９は送風ファン１１５の前面側に配置されている。すなわち、熱交換器１１９は、熱交換器１１８の下部に位置し、熱交換器１１７は、熱交換器１１８の背面に位置する。 The heat exchanger 117 , the heat exchanger 118 and the heat exchanger 119 are arranged inside the indoor unit body 110 . The heat exchanger 117 is arranged above the back side of the blower fan 115 , the heat exchanger 118 is arranged above the front side of the blower fan 115 , and the heat exchanger 119 is arranged on the front side of the blower fan 115 . . That is, the heat exchanger 119 is positioned below the heat exchanger 118 and the heat exchanger 117 is positioned behind the heat exchanger 118 .
　熱交換器１１９の下方には、結露水を回収するためのドレンパン１１３が配置されている。熱交換器１１７の下方にも、ドレンパン１１４が配置されている。ドレンパン１１３及びドレンパン１１４は、室内機本体１１０の一部として形成されている。 A drain pan 113 for collecting condensed water is arranged below the heat exchanger 119 . A drain pan 114 is also arranged below the heat exchanger 117 . The drain pan 113 and the drain pan 114 are formed as part of the indoor unit body 110 .
　送風ファン１１５、風路壁１１６、及びドレンパン１１３の少なくとも一部の表面には、コーティング膜1が形成されている。ドレンパン１１３の表面の全てに、コーティング膜１が形成されてもよい。また、ドレンパン１１４の少なくとも一部の表面には、コーティング膜１が形成されてもよい。ドレンパン１１４の全てがコーティング膜１によって形成されてもよい。換言すれば、ドレンパン１１３及びドレンパン１１４は、ドレンパン１１３及びドレンパン１１４の少なくとも一方の表面に、実施の形態１で説明したコーティング膜１を有するものである。なお、コーティング膜１の形成方法は、実施の形態２で説明したのと同様である。 A coating film 1 is formed on at least part of the surfaces of the blower fan 115, the air passage wall 116, and the drain pan 113. Coating film 1 may be formed on the entire surface of drain pan 113 . Moreover, the coating film 1 may be formed on at least a part of the surface of the drain pan 114 . The entire drain pan 114 may be formed of the coating film 1 . In other words, drain pan 113 and drain pan 114 have coating film 1 described in the first embodiment on at least one surface of drain pan 113 and drain pan 114 . The method of forming coating film 1 is the same as that described in the second embodiment.
　形成されるコーティング膜１は、粉塵付着抑制の性能と長期の抗ウイルス性能および防かび性能を有するため、空気調和機の各種部材に使用するのに好適である。特に、送風ファン１１５、風路壁１１６、ドレンパン１１３及びドレンパン１１４の双方にコーティング膜１が形成されていることが好ましい。従って、コーティング膜１が形成された各種部材を有する実施の形態３に係る空気調和機は、長期にわたって粉塵付着抑制性能と防かび性能と抗ウイルス性能とを有する。 The formed coating film 1 has dust adhesion suppression performance and long-term antiviral and antifungal performance, so it is suitable for use in various parts of air conditioners. In particular, it is preferable that the coating film 1 is formed on both the blower fan 115 , the air passage wall 116 , the drain pan 113 and the drain pan 114 . Therefore, the air conditioner according to Embodiment 3, which has various members on which coating film 1 is formed, has dust adhesion suppression performance, antifungal performance, and antiviral performance over a long period of time.
　以下、実施例及び比較例により本開示の詳細を説明するが、これらによって本開示の内容が限定されるものではない。
　尚、基板としては、いずれも板厚１ｍｍのポリスチレン（PS）樹脂板を用いた。 EXAMPLES The details of the present disclosure will be described below with reference to Examples and Comparative Examples, but the content of the present disclosure is not limited to these.
A polystyrene (PS) resin plate having a thickness of 1 mm was used as the substrate.
＜実施例１＞
　第一層を構成するコーティング組成物として、球状樹脂粒子（モメンティブ社製ＴＯＳＰＥＡＬＲ１３０）１.０質量％と有機樹脂剤（第一工業製薬社製ポリウレタン水分散体）２.０質量％と抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）０.５質量％とを調合した。第一層を構成するコーティング組成物をＰＳ基材に塗布し、６０℃恒温槽にて１２０分乾燥して、第一層を形成した。
　続いて、第二層を構成するコーティング組成物として、シリカ粒子（日揮触媒化成社製（登録商標）カタロイドＳＩ―５５０）２.０質量％とフッ素樹脂粒子（ＡＧＣ社製（登録商標）フルオンＡＤ９１１Ｅ）２.０質量％と抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）１．０質量％と防かび抗菌剤（富士ケミカル株式会社製ＭＰ―１０２ＳＶＰ０５）１．０質量％とを調合した。第二層を構成するコーティング組成物を第一層上に塗布し、６０℃恒温槽にて２０分乾燥することで第二層を形成した。形成したコーティング膜に含まれる各粒子の平均粒径及び第一層と第二層との膜厚の構成は、表１の通りである。膜厚は、断面観測によって測定した。 <Example 1>
As a coating composition constituting the first layer, 1.0% by mass of spherical resin particles (TOSPEALR130 manufactured by Momentive), 2.0% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) was mixed with 0.5% by mass. The coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer.
Subsequently, as a coating composition constituting the second layer, silica particles (manufactured by Nikki Shokubai Kasei Co., Ltd. (registered trademark) Cataloid SI-550) 2.0% by mass and fluororesin particles (manufactured by AGC (registered trademark) Fluon AD911E ) 2.0% by mass, antiviral agent (Neosintol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) 1.0% by mass, and antifungal agent (MP-102SVP05 manufactured by Fuji Chemical Co., Ltd.) 1.0% by mass was mixed. A second layer was formed by applying a coating composition constituting a second layer onto the first layer and drying in a 60° C. constant temperature bath for 20 minutes. Table 1 shows the average particle diameter of each particle contained in the formed coating film and the film thickness of the first layer and the second layer. The film thickness was measured by cross-sectional observation.
＜実施例２＞
　第一層を構成するコーティング組成物として、球状樹脂粒子（モメンティブ社製ＴＯＳＰＥＡＬＲ３１２０）１.０質量％と有機樹脂剤（第一工業製薬社製ポリウレタン水分散体）０.５質量％と抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）０.５質量％とを調合した。第一層を構成するコーティング組成物をＰＳ基材に塗布し、６０℃恒温槽にて１２０分乾燥して、第一層を形成した。
　続いて、第二層を構成するコーティング組成物として、シリカ粒子（日揮触媒化成社製（登録商標）カタロイドＳＩ―５５０）０.２質量％とフッ素樹脂粒子（ＡＧＣ社製（登録商標）フルオンＡＤ９１１Ｅ）０．１質量％と抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）１．０質量％と防かび抗菌剤（富士ケミカル株式会社製ＭＰ―１０２ＳＶＰ０５）１．０質量％とを調合した。第二層を構成するコーティング組成物を第一層上に塗布し、６０℃恒温槽にて２０分乾燥することで第二層を形成した。形成したコーティング膜に含まれる各粒子の平均粒径及び第一層と第二層との膜厚の構成は、表１の通りである。膜厚は、断面観測によって測定した。 <Example 2>
As a coating composition constituting the first layer, 1.0% by mass of spherical resin particles (TOSPEALR3120 manufactured by Momentive), 0.5% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) was mixed with 0.5% by mass. The coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer.
Subsequently, as a coating composition constituting the second layer, silica particles (manufactured by Nikki Shokubai Kasei Co., Ltd. (registered trademark) Cataloid SI-550) 0.2% by mass and fluororesin particles (manufactured by AGC (registered trademark) Fluon AD911E ) 0.1% by mass, antiviral agent (Neosintol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) 1.0% by mass, and antifungal agent (MP-102SVP05 manufactured by Fuji Chemical Co., Ltd.) 1.0% by mass was mixed. A second layer was formed by applying a coating composition constituting a second layer onto the first layer and drying in a 60° C. constant temperature bath for 20 minutes. Table 1 shows the average particle diameter of each particle contained in the formed coating film and the film thickness of the first layer and the second layer. The film thickness was measured by cross-sectional observation.
＜実施例３＞
　第一層を構成するコーティング組成物として、球状樹脂粒子（モメンティブ社製ＴＯＳＰＥＡＬＲ１３０）２.０質量％と有機樹脂剤（第一工業製薬社製ポリウレタン水分散体）５.０質量％と抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）０.５質量％とを調合した。第一層を構成するコーティング組成物をＰＳ基材に塗布し、６０℃恒温槽にて１２０分乾燥して、第一層を形成した。
　続いて、第二層を構成するコーティング組成物として、シリカ粒子（日揮触媒化成社製（登録商標）カタロイドＳＩ―５５０）５.０質量％とフッ素樹脂粒子（ＡＧＣ社製（登録商標）フルオンＡＤ９１１Ｅ）５.０質量％と抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）１．０質量％と防かび抗菌剤（富士ケミカル株式会社製ＭＰ―１０２ＳＶＰ０５）１．０質量％とを調合した。第二層を構成するコーティング組成物を第一層上に塗布し、６０℃恒温槽にて２０分乾燥することで第二層を形成した。形成したコーティング膜に含まれる各粒子の平均粒径及び第一層と第二層との膜厚の構成は、表１の通りである。膜厚は、断面観測によって測定した。 <Example 3>
As a coating composition constituting the first layer, 2.0% by mass of spherical resin particles (TOSPEALR130 manufactured by Momentive), 5.0% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) was mixed with 0.5% by mass. The coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer.
Subsequently, as a coating composition constituting the second layer, silica particles (manufactured by Nikki Shokubai Kasei Co., Ltd. (registered trademark) Cataloid SI-550) 5.0% by mass and fluororesin particles (manufactured by AGC (registered trademark) Fluon AD911E ) 5.0% by mass, antiviral agent (Neosintol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) 1.0% by mass, and antifungal agent (MP-102SVP05 manufactured by Fuji Chemical Co., Ltd.) 1.0% by mass was mixed. A second layer was formed by applying a coating composition constituting a second layer onto the first layer and drying in a 60° C. constant temperature bath for 20 minutes. Table 1 shows the average particle diameter of each particle contained in the formed coating film and the film thickness of the first layer and the second layer. The film thickness was measured by cross-sectional observation.
＜実施例４＞
　第一層を構成するコーティング組成物として、球状樹脂粒子（モメンティブ社製XC９９―Ａ８８０８）１.０質量％と有機樹脂剤（第一工業製薬社製ポリウレタン水分散体）２.０質量％と抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）０.５質量％とを調合した。第一層を構成するコーティング組成物をＰＳ基材に塗布し、６０℃恒温槽にて１２０分乾燥して、第一層を形成した。
　続いて、第二層を構成するコーティング組成物として、シリカ粒子（日揮触媒化成社製（登録商標）カタロイドＳＩ―５５０）２.０質量％とフッ素樹脂粒子（ＡＧＣ社製（登録商標）フルオンＡＤ９１１Ｅ）２.０質量％を用いと抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）１．０質量％と防かび抗菌剤（富士ケミカル株式会社製ＭＰ―１０２ＳＶＰ０５）１．０質量％とを調合した。第二層を構成するコーティング組成物を第一層上に塗布し、６０℃恒温槽にて２０分乾燥することで第二層を形成した。形成したコーティング膜に含まれる各粒子の平均粒径及び第一層と第二層との膜厚の構成は、表１の通りである。膜厚は、断面観測によって測定した。 <Example 4>
As a coating composition constituting the first layer, 1.0% by mass of spherical resin particles (XC99-A8808 manufactured by Momentive) and 2.0% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) 0.5% by mass of a virus agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) was prepared. The coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer.
Subsequently, as a coating composition constituting the second layer, silica particles (manufactured by Nikki Shokubai Kasei Co., Ltd. (registered trademark) Cataloid SI-550) 2.0% by mass and fluororesin particles (manufactured by AGC (registered trademark) Fluon AD911E ) Using 2.0% by mass, 1.0% by mass of antiviral agent (Neosintol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) and 1.0% by mass of antifungal agent (MP-102SVP05 manufactured by Fuji Chemical Co., Ltd.) %. A second layer was formed by applying a coating composition constituting a second layer onto the first layer and drying in a 60° C. constant temperature bath for 20 minutes. Table 1 shows the average particle diameter of each particle contained in the formed coating film and the film thickness of the first layer and the second layer. The film thickness was measured by cross-sectional observation.
＜実施例５＞
　第一層を構成するコーティング組成物として、球状樹脂粒子（モメンティブ社製ＴＯＳＰＥＡＬＲ３１２０）１.０質量％と有機樹脂剤（第一工業製薬社製ポリウレタン水分散体）２.０質量％と抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）０.５質量％とを調合した。第一層を構成するコーティング組成物をＰＳ基材に塗布し、６０℃恒温槽にて１２０分乾燥して、第一層を形成した。
　続いて、第二層を構成するコーティング組成物として、シリカ粒子（日揮触媒化成社製（登録商標）カタロイドＳＩ―５５０）２.０質量％とフッ素樹脂粒子（ＡＧＣ社製（登録商標）フルオンＡＤ９１１Ｅ）２.０質量％と抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）１．０質量％と防かび抗菌剤（富士ケミカル株式会社製ＭＰ―１０２ＳＶＰ０５）１．０質量％とを調合した。第二層を構成するコーティング組成物を第一層上に塗布し、６０℃恒温槽にて２０分乾燥することで第二層を形成した。形成したコーティング膜に含まれる各粒子の平均粒径及び第一層と第二層との膜厚の構成は、表１の通りである。膜厚は、断面観測によって測定した。 <Example 5>
As a coating composition constituting the first layer, 1.0% by mass of spherical resin particles (TOSPEALR3120 manufactured by Momentive), 2.0% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) was mixed with 0.5% by mass. The coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer.
Subsequently, as a coating composition constituting the second layer, silica particles (manufactured by Nikki Shokubai Kasei Co., Ltd. (registered trademark) Cataloid SI-550) 2.0% by mass and fluororesin particles (manufactured by AGC (registered trademark) Fluon AD911E ) 2.0% by mass, antiviral agent (Neosintol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) 1.0% by mass, and antifungal agent (MP-102SVP05 manufactured by Fuji Chemical Co., Ltd.) 1.0% by mass was mixed. A second layer was formed by applying a coating composition constituting a second layer onto the first layer and drying in a 60° C. constant temperature bath for 20 minutes. Table 1 shows the average particle diameter of each particle contained in the formed coating film and the film thickness of the first layer and the second layer. The film thickness was measured by cross-sectional observation.
＜実施例６＞
　第一層を構成するコーティング組成物として、球状樹脂粒子（モメンティブ社製ＴＯＳＰＥＡＬＲ１３０）２.０質量％と有機樹脂剤（第一工業製薬社製ポリウレタン水分散体）２.０質量％と抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）０.５質量％とを調合した。第一層を構成するコーティング組成物をＰＳ基材に塗布し、６０℃恒温槽にて１２０分乾燥して、第一層を形成した。
　続いて、第二層を構成するコーティング組成物として、シリカ粒子（日産化学社製（登録商標）スノーテックスＳＴ―ＸＳ）２.０質量％とフッ素樹脂粒子（ＡＧＣ社製（登録商標）フルオンＡＤ９１１Ｅ）２.０質量％と抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）１．０質量％と防かび抗菌剤（富士ケミカル株式会社製ＭＰ―１０２ＳＶＰ０５）１．０質量％とを調合した。第二層を構成するコーティング組成物を第一層上に塗布し、６０℃恒温槽にて２０分乾燥することで第二層を形成した。形成したコーティング膜に含まれる各粒子の平均粒径及び第一層と第二層との膜厚の構成は、表１の通りである。膜厚は、断面観測によって測定した。 <Example 6>
As a coating composition constituting the first layer, 2.0% by mass of spherical resin particles (TOSPEALR130 manufactured by Momentive), 2.0% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) was mixed with 0.5% by mass. The coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer.
Subsequently, as a coating composition constituting the second layer, silica particles (Nissan Chemical Co., Ltd. (registered trademark) Snowtex ST-XS) 2.0% by mass and fluororesin particles (AGC Co., Ltd. (registered trademark) Fluon AD911E ) 2.0% by mass, antiviral agent (Neosintol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) 1.0% by mass, and antifungal agent (MP-102SVP05 manufactured by Fuji Chemical Co., Ltd.) 1.0% by mass was mixed. A second layer was formed by applying a coating composition constituting a second layer onto the first layer and drying in a 60° C. constant temperature bath for 20 minutes. Table 1 shows the average particle diameter of each particle contained in the formed coating film and the film thickness of the first layer and the second layer. The film thickness was measured by cross-sectional observation.
＜実施例７＞
　第一層を構成するコーティング組成物として、球状樹脂粒子（モメンティブ社製ＴＯＳＰＥＡＬＲ１３０）２.０質量％と有機樹脂剤（第一工業製薬社製ポリウレタン水分散体）２.０質量％と抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）０.５質量％とを調合した。第一層を構成するコーティング組成物をＰＳ基材に塗布し、６０℃恒温槽にて１２０分乾燥して、第一層を形成した。
　続いて、第二層を構成するコーティング組成物として、シリカ粒子（日産化学社製（登録商標）スノーテックスＭＰ１０４０）２.０質量％とフッ素樹脂粒子（ＡＧＣ社製（登録商標）フルオンＡＤ９１１Ｅ）２.０質量％と抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）１．０質量％と防かび抗菌剤（富士ケミカル株式会社製ＭＰ―１０２ＳＶＰ０５）１．０質量％とを調合した。第二層を構成するコーティング組成物を第一層上に塗布し、６０℃恒温槽にて２０分乾燥することで第二層を形成した。形成したコーティング膜に含まれる各粒子の平均粒径及び第一層と第二層との膜厚の構成は、表１の通りである。膜厚は、断面観測によって測定した。 <Example 7>
As a coating composition constituting the first layer, 2.0% by mass of spherical resin particles (TOSPEALR130 manufactured by Momentive), 2.0% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) was mixed with 0.5% by mass. The coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer.
Subsequently, as a coating composition constituting the second layer, silica particles (manufactured by Nissan Chemical Co., Ltd. (registered trademark) Snowtex MP1040) 2.0% by mass and fluororesin particles (manufactured by AGC (registered trademark) Fluon AD911E) 2 .0% by mass, 1.0% by mass of an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.), and 1.0% by mass of an antifungal agent (MP-102SVP05 manufactured by Fuji Chemical Co., Ltd.). bottom. A second layer was formed by applying a coating composition constituting a second layer onto the first layer and drying in a 60° C. constant temperature bath for 20 minutes. Table 1 shows the average particle diameter of each particle contained in the formed coating film and the film thickness of the first layer and the second layer. The film thickness was measured by cross-sectional observation.
＜実施例８＞
　第一層を構成するコーティング組成物として、球状樹脂粒子（モメンティブ社製ＴＯＳＰＥＡＬＲ１３０）２.０質量％と有機樹脂剤（第一工業製薬社製ポリウレタン水分散体）２.０質量％と抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）０.５質量％とを調合した。第一層を構成するコーティング組成物をＰＳ基材に塗布し、６０℃恒温槽にて１２０分乾燥して、第一層を形成した。
　続いて、第二層を構成するコーティング組成物として、シリカ粒子（日産化学社製（登録商標）スノーテックスＳＴ―ＸＳ）２.０質量％とフッ素樹脂粒子（ＡＧＣ社製（登録商標）フルオンＡＤ９１１Ｅ）２.０質量％と抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）１．０質量％と防かび抗菌剤（日揮触媒化成株式会社ＡＴＯＭＹＢＡＬＬ―ＵＡ ）１．０質量％とを調合した。第二層を構成するコーティング組成物を第一層上に塗布し、６０℃恒温槽にて２０分乾燥することで第二層を形成した。形成したコーティング膜に含まれる各粒子の平均粒径及び第一層と第二層との膜厚の構成は、表１の通りである。膜厚は、断面観測によって測定した。 <Example 8>
As a coating composition constituting the first layer, 2.0% by mass of spherical resin particles (TOSPEALR130 manufactured by Momentive), 2.0% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) was mixed with 0.5% by mass. The coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer.
Subsequently, as a coating composition constituting the second layer, silica particles (Nissan Chemical Co., Ltd. (registered trademark) Snowtex ST-XS) 2.0% by mass and fluororesin particles (AGC Co., Ltd. (registered trademark) Fluon AD911E ) 2.0% by mass, antiviral agent (Neosintol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) 1.0% by mass, and antifungal agent (ATOMYBALL-UA, Nikki Shokubai Kasei Co., Ltd.) 1.0% by mass was mixed. A second layer was formed by applying a coating composition constituting a second layer onto the first layer and drying in a 60° C. constant temperature bath for 20 minutes. Table 1 shows the average particle diameter of each particle contained in the formed coating film and the film thickness of the first layer and the second layer. The film thickness was measured by cross-sectional observation.
＜実施例９＞
　第一層を構成するコーティング組成物として、球状樹脂粒子（モメンティブ社製ＴＯＳＰＥＡＬＲ１３０）２.０質量％と有機樹脂剤（第一工業製薬社製ポリウレタン水分散体）２.０質量％と抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）０.５質量％とを調合した。第一層を構成するコーティング組成物をＰＳ基材に塗布し、６０℃恒温槽にて１２０分乾燥して、第一層を形成した。
　続いて、第二層を構成するコーティング組成物として、シリカ粒子（日産化学社製（登録商標）スノーテックスＭＰ―１０４０）２.０質量％とフッ素樹脂粒子（ＡＧＣ社製（登録商標）フルオンＡＤ９１１Ｅ）２.０質量％と抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）１．０質量％と防かび抗菌剤（シナネンゼオミック社製エッセンガード１０）１．０質量％とを調合した。第二層を構成するコーティング組成物を第一層上に塗布し、６０℃恒温槽にて２０分乾燥することで第二層を形成した。形成したコーティング膜に含まれる各粒子の平均粒径及び第一層と第二層との膜厚の構成は、表１の通りである。膜厚は、断面観測によって測定した。 <Example 9>
As a coating composition constituting the first layer, 2.0% by mass of spherical resin particles (TOSPEALR130 manufactured by Momentive), 2.0% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) was mixed with 0.5% by mass. The coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer.
Subsequently, as a coating composition constituting the second layer, silica particles (manufactured by Nissan Chemical Co., Ltd. (registered trademark) Snowtex MP-1040) 2.0% by mass and fluororesin particles (manufactured by AGC (registered trademark) Fluon AD911E ) 2.0% by mass, antiviral agent (Neosintol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) 1.0% by mass, and antifungal agent (Essenguard 10 manufactured by Sinanen Zeomic) 1.0% by mass Formulated. A second layer was formed by applying a coating composition constituting a second layer onto the first layer and drying in a 60° C. constant temperature bath for 20 minutes. Table 1 shows the average particle diameter of each particle contained in the formed coating film and the film thickness of the first layer and the second layer. The film thickness was measured by cross-sectional observation.
＜比較例１＞
　第一層を構成するコーティング組成物として、有機樹脂剤（第一工業製薬社製ポリウレタン水分散体）２.０質量％と抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）０.５質量％とを調合した。第一層を構成するコーティング組成物をＰＳ基材に塗布し、６０℃恒温槽にて１２０分乾燥して、第一層を形成した。
　続いて、第二層を構成するコーティング組成物として、シリカ粒子（日揮触媒化成社製（登録商標）カタロイドＳＩ―５５０）２.０質量％とフッ素樹脂粒子（ＡＧＣ社製（登録商標）フルオンＡＤ９１１Ｅ）２.０質量％と抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）と１．０質量％、防かび抗菌剤（富士ケミカル株式会社製ＭＰ―１０２ＳＶＰ０５）１．０質量％とを調合した。第二層を構成するコーティング組成物を第一層上に塗布し、６０℃恒温槽にて２０分乾燥することで第二層を形成した。形成したコーティング膜に含まれる各粒子の平均粒径及び第一層と第二層との膜厚の構成は、表１の通りである。膜厚は、断面観測によって測定した。 <Comparative Example 1>
As a coating composition constituting the first layer, 2.0% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) and 0% of an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) .5% by weight. The coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer.
Subsequently, as a coating composition constituting the second layer, silica particles (manufactured by Nikki Shokubai Kasei Co., Ltd. (registered trademark) Cataloid SI-550) 2.0% by mass and fluororesin particles (manufactured by AGC (registered trademark) Fluon AD911E ) 2.0% by mass, antiviral agent (Neosintol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) and 1.0% by mass, antifungal agent (MP-102SVP05 manufactured by Fuji Chemical Co., Ltd.) 1.0% by mass was mixed with A second layer was formed by applying a coating composition constituting a second layer onto the first layer and drying in a 60° C. constant temperature bath for 20 minutes. Table 1 shows the average particle diameter of each particle contained in the formed coating film and the film thickness of the first layer and the second layer. The film thickness was measured by cross-sectional observation.
＜比較例２＞
　第一層を構成するコーティング組成物として、球状樹脂粒子（モメンティブ社製ＴＯＳＰＥＡＬＲ１３０）２.０質量％と有機樹脂剤（第一工業製薬社製ポリウレタン水分散体）２.０質量％と抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）０.５質量％とを調合した。第一層を構成するコーティング組成物をＰＳ基材に塗布し、６０℃恒温槽にて１２０分乾燥して、第一層を形成した。第二層は形成しなかった。形成したコーティング膜に含まれる各粒子の平均粒径及び第一層の膜厚の構成は、表１の通りである。膜厚は、断面観測によって測定した。 <Comparative Example 2>
As a coating composition constituting the first layer, 2.0% by mass of spherical resin particles (TOSPEALR130 manufactured by Momentive), 2.0% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) was mixed with 0.5% by mass. The coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer. A second layer did not form. Table 1 shows the average particle size of each particle contained in the formed coating film and the film thickness of the first layer. The film thickness was measured by cross-sectional observation.
＜比較例３＞
　第一層は形成せず、第二層を構成するコーティング組成物として、シリカ粒子（日揮触媒化成社製（登録商標）カタロイドＳＩ―５５０）２.０質量％、フッ素樹脂粒子（ＡＧＣ社製（登録商標）フルオンＡＤ９１１Ｅ）２.０質量％を用い、抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）０.５質量％、防かび抗菌剤（富士ケミカル株式会社製ＭＰ―１０２ＳＶＰ０５）１．０質量％にて、表１に示す組成にて塗布し、６０℃恒温槽にて２０分乾燥することでコーティング膜を形成した。形成したコーティング膜に含まれる各粒子の平均粒径及び第二層との膜厚の構成は、表１の通りである。膜厚は、断面観測によって測定した。 <Comparative Example 3>
As a coating composition that does not form the first layer and constitutes the second layer, silica particles (manufactured by Nikki Shokubai Kasei Co., Ltd. (registered trademark) Cataloid SI-550) 2.0% by mass, fluororesin particles (manufactured by AGC ( Registered trademark) Fluon AD911E) 2.0% by mass, antiviral agent (Neosintol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) 0.5% by mass, antifungal agent (MP-102SVP05 manufactured by Fuji Chemical Co., Ltd.) ) at 1.0% by mass, the composition shown in Table 1 was applied and dried in a constant temperature bath at 60°C for 20 minutes to form a coating film. Table 1 shows the average particle diameter of each particle contained in the formed coating film and the film thickness of the second layer. The film thickness was measured by cross-sectional observation.
＜比較例４＞
　第一層を構成するコーティング組成物として、球状樹脂粒子（モメンティブ社製ＴＯＳＰＥＡＬＲ１３０）２.０質量％と有機樹脂剤（第一工業製薬社製ポリウレタン水分散体）２.０質量％と抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）０.５質量％とを調合した。第一層を構成するコーティング組成物をＰＳ基材に塗布し、６０℃恒温槽にて１２０分乾燥して、第一層を形成した。
　続いて、第二層を構成するコーティング組成物として、フッ素樹脂粒子（ＡＧＣ社製（登録商標）フルオンＡＤ９１１Ｅ）６．０質量％と抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）０.５質量％と防かび抗菌剤（富士ケミカル株式会社製ＭＰ―１０２ＳＶＰ０５）１．０質量％とを調合した。第二層を構成するコーティング組成物を第一層上に塗布し、６０℃恒温槽にて２０分乾燥することで第二層を形成した。形成したコーティング膜に含まれる各粒子の平均粒径及び第一層と第二層との膜厚の構成は、表１の通りである。膜厚は、断面観測によって測定した。 <Comparative Example 4>
As a coating composition constituting the first layer, 2.0% by mass of spherical resin particles (TOSPEALR130 manufactured by Momentive), 2.0% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) was mixed with 0.5% by mass. The coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer.
Subsequently, as a coating composition constituting the second layer, 6.0% by mass of fluororesin particles (AGC (registered trademark) Fluon AD911E) and an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd. ) and 1.0% by mass of an antifungal and antibacterial agent (MP-102SVP05 manufactured by Fuji Chemical Co., Ltd.). A second layer was formed by applying a coating composition constituting a second layer onto the first layer and drying in a 60° C. constant temperature bath for 20 minutes. Table 1 shows the average particle diameter of each particle contained in the formed coating film and the film thickness of the first layer and the second layer. The film thickness was measured by cross-sectional observation.
＜比較例５＞
　第一層を構成するコーティング組成物として、球状樹脂粒子（モメンティブ社製ＴＯＳＰＥＡＬＲ１３０）２.０質量％と有機樹脂剤（第一工業製薬社製ポリウレタン水分散体）２.０質量％と抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）０.５質量％とを調合した。第一層を構成するコーティング組成物をＰＳ基材に塗布し、６０℃恒温槽にて１２０分乾燥して、第一層を形成した。
　続いて、第二層を構成するコーティング組成物として、シリカ粒子（日揮触媒化成社製（登録商標）カタロイドＳＩ―５５０）２.０質量％とフッ素樹脂粒子（ＡＧＣ社製（登録商標）フルオンＡＤ９１１Ｅ）２.０質量％と抗ウイルス剤（住化エンバイロメンタルサイエンス株式会社製ネオシントールＡＶ―１８Ｆ）１．０質量％とを調合した。第二層を構成するコーティング組成物を第一層上に塗布し、６０℃恒温槽にて２０分乾燥することで第二層を形成した。形成したコーティング膜に含まれる各粒子の平均粒径及び第一層と第二層との膜厚の構成は、表１の通りである。膜厚は、断面観測によって測定した。 <Comparative Example 5>
As a coating composition constituting the first layer, 2.0% by mass of spherical resin particles (TOSPEALR130 manufactured by Momentive), 2.0% by mass of an organic resin agent (aqueous polyurethane dispersion manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and an antiviral agent (Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) was mixed with 0.5% by mass. The coating composition constituting the first layer was applied to a PS substrate and dried in a constant temperature bath at 60°C for 120 minutes to form a first layer.
Subsequently, as a coating composition constituting the second layer, silica particles (manufactured by Nikki Shokubai Kasei Co., Ltd. (registered trademark) Cataloid SI-550) 2.0% by mass and fluororesin particles (manufactured by AGC (registered trademark) Fluon AD911E ) and 1.0% by mass of an antiviral agent (Neosintol AV-18F manufactured by Sumika Environmental Science Co., Ltd.) were mixed. A second layer was formed by applying a coating composition constituting a second layer onto the first layer and drying in a 60° C. constant temperature bath for 20 minutes. Table 1 shows the average particle diameter of each particle contained in the formed coating film and the film thickness of the first layer and the second layer. The film thickness was measured by cross-sectional observation.
　上記の実施例１から９及び比較例１から５で形成したコーティング膜について、球状樹脂粒子の平均粒径と第一層膜厚と第二層膜厚と無機粒子の平均粒径と防かび抗菌粒子の平均粒径との構成の一覧を表１に示す。
＜表１＞
Figure JPOXMLDOC01-appb-I000001
Regarding the coating films formed in Examples 1 to 9 and Comparative Examples 1 to 5 above, the average particle size of the spherical resin particles, the first layer thickness, the second layer thickness, the average particle size of the inorganic particles, and the antifungal and antibacterial Table 1 shows a list of the average particle size and composition of the particles.
<Table 1>
Figure JPOXMLDOC01-appb-I000001
　コーティング膜における粉塵の付着抑制性能は粉塵の固着性を評価することにより行った。温度２５℃及び湿度５０％条件下において、ＪＩＳ１５種をエアーでコーティング膜を有する部材上に吹き付け、初期（１０秒後）と５時間経過後に実施した。その後、メンディングテープ（住友３Ｍ社製）により採取し、分光光度計（島津製作所社製；ＵＶ－３１００ＰＣ）による吸光度（波長５５０ｎｍ）を測定し、下記の基準に従って評価した。吸光度が小さいほどコーティング膜における粉塵の付着抑制性能が良好であるといえる。
　＜粉塵付着抑制性能＞
　　１：吸光度が０．１未満のもの。
　　２：吸光度が０．１以上０．２未満のもの。
　　３：吸光度が０．２以上０．３未満のもの。
　　４：吸光度が０．３以上０．４未満のもの。
　　５：吸光度が０．４以上のもの。 The dust adhesion suppression performance of the coating film was evaluated by evaluating the adhesion of dust. Under conditions of a temperature of 25° C. and a humidity of 50%, JIS Class 15 was sprayed with air onto a member having a coating film, and the test was performed initially (after 10 seconds) and after 5 hours. Then, it was collected with a mending tape (manufactured by Sumitomo 3M Co., Ltd.), and the absorbance (wavelength 550 nm) was measured with a spectrophotometer (manufactured by Shimadzu Corporation; UV-3100PC) and evaluated according to the following criteria. It can be said that the smaller the absorbance, the better the dust adhesion suppression performance of the coating film.
<Dust adhesion suppression performance>
1: Absorbance less than 0.1.
2: Absorbance of 0.1 or more and less than 0.2.
3: Absorbance of 0.2 or more and less than 0.3.
4: Absorbance of 0.3 or more and less than 0.4.
5: Absorbance of 0.4 or more.
　防かび性能は、プラスチック製品のかび抵抗性を評価する定性試験として「ＪＩＳ　Ｚ２９１１，１０．プラスチック製品の試験」に規定されている。また、この試験方法は３種に分けられ、今回は方法Ｂを採用した。試験では次の５種類のかびの胞子を含む混合胞子懸濁液を使用した。５種類のかびの胞子は、Ａｓｐｅｒｇｉｌｌｕｓ　ｎｉｇｅｒ　ＮＢＲＣ　１０５６４９、Ｐｅｎｉｃｉｌｌｉｕｍ　ｐｉｎｏｐｈｉｌｕｍ　ＮＢＲＣ　３３２８５、Ｐａｅｃｉｌｏｍｙｃｅｓ　ｖａｒｉｏｔｉｉ　ＮＢＲＣ　３３２８４、Ｔｒｉｃｈｏｄｅｒｍａ　ｖｉｒｅｎｓ　ＮＢＲＣ　６３５５、Ｃｈａｅｔｏｍｉｕｍ　ｇｌｏｂｏｓｕｍ　ＮＢＲＣ　６３４７である。
　＜防かび性能＞
　　０：肉眼及び顕微鏡下でかびの発育は認められない。
　　１：肉眼ではかびの発育が認められないが、顕微鏡下では明らかに確認する。
　　２：肉眼でかびの発育が認められ、発育部分の面積は試料の全面積の２５％未満。
　　３：肉眼でかびの発育が認められ、発育部分の面積は試料の全面積の
　　　　２５％以上５０％未満。
　　４：菌糸はよく発育し、発育部分の面積は試料の全面積の５０％以上。
　　５：菌糸の発育は激しく、試料全面を覆っている。 Antifungal performance is specified in "JIS Z2911, 10. Testing of plastic products" as a qualitative test for evaluating the fungal resistance of plastic products. In addition, this test method is divided into three types, and method B was adopted this time. A mixed spore suspension containing spores of the following five types of fungi was used in the test. The five mold spores are Aspergillus niger NBRC 105649, Penicillium pinophilum NBRC 33285, Paecilomyces variotii NBRC 33284, Trichoderma virens NBRC 6355, Chaet omium globosum NBRC 6347.
<Anti-mold performance>
0: No fungal growth was observed with the naked eye or under a microscope.
1: Growth of fungi is not observed with the naked eye, but is clearly confirmed under a microscope.
2: Fungal growth was observed with the naked eye, and the area of the grown portion was less than 25% of the total area of the sample.
3: Fungal growth was observed with the naked eye, and the area of the grown portion was 25% or more and less than 50% of the total area of the sample.
4: The mycelium grows well, and the area of the growing part is 50% or more of the total area of the sample.
5: Mycelium grows vigorously and covers the entire surface of the sample.
＜抗ウイルス性能＞
　作用時間は２４時間、試験ウイルスはＡ型インフルウエンザウィルス（Ｈ１Ｎ１型）、試験方法は抗菌試験方法（ＩＳＯ２１７０２）に準拠した方法で試験を実施した。試験サンプル（サイズ５０ｍｍ×５０ｍｍ）を保湿シャーレに入れ、ウイルス液を０．１～０．２ｍｌ滴下し、４０ｍｍ×４０ｍｍサイズのフィルム（ＰＥＴ）を乗せ、試験品とウイルスの接触効率を上げてから２４時間後、試験品からウイルスを回収し、抗菌活性値を測定した。また、耐水性試験（区分）の試験後の抗菌活性値も測定した。 <Antiviral performance>
The action time was 24 hours, the test virus was type A influenza virus (H1N1 type), and the test method was based on the antibacterial test method (ISO21702). Place the test sample (size 50 mm x 50 mm) in a moisturizing petri dish, drop 0.1 to 0.2 ml of the virus solution, put a 40 mm x 40 mm size film (PET) on it, and increase the contact efficiency between the test sample and the virus. After 24 hours, the virus was collected from the test article and the antibacterial activity value was measured. In addition, the antibacterial activity value after the water resistance test (class) was also measured.
　上記試験の結果に基づく粉塵付着抑制性能及び防かび性能、抗ウイルス性能の抗菌活性値の結果を表２に示す。
＜表２＞
Figure JPOXMLDOC01-appb-I000002
Table 2 shows the antibacterial activity values of the dust adhesion suppression performance, the antifungal performance, and the antiviral performance based on the results of the above tests.
<Table 2>
Figure JPOXMLDOC01-appb-I000002
　表２に示されているように、実施例１～９のコーティング膜は、粉塵付着抑制性能が良好であると共に、防かび性能、抗ウイルス性能も高い。中でも、実施例１のコーティング膜は、粉塵の付着抑制性能、防かび性能、抗ウイルス性能が最も良好であった。
　また、比較例１を有するコーティング膜は、球状樹脂粒子が配合されていないため、１００時間経過後の粉塵付着抑制性能が悪化する結果となっている。また、第一層を含有していない比較例２のコーティング膜は、耐水試験後の抗ウイルス性能が悪化する結果となっている。さらに、比較例３のコーティング膜は、初期、１００時間とも粉塵付着抑制性能が悪化する結果となっている。比較例４のコーティング膜は、粉塵付着抑制性能が悪化する結果となっている。比較例５のコーティング膜は、防かび性能が悪化する結果となっている。
　以上の結果からわかるように、本開示によれば粉塵付着抑制性能と防かび性能と抗ウイルス性能を有し、長期の耐久性が得られるコーティング膜及びこれを備えた空気調和機を提供することができる。 As shown in Table 2, the coating films of Examples 1 to 9 have good dust adhesion suppression performance, and also have high antifungal performance and antiviral performance. Among them, the coating film of Example 1 exhibited the best dust adhesion suppression performance, antifungal performance, and antiviral performance.
Moreover, since the coating film of Comparative Example 1 does not contain spherical resin particles, the dust adhesion suppression performance after 100 hours has deteriorated. Moreover, the coating film of Comparative Example 2, which did not contain the first layer, resulted in poor antiviral performance after the water resistance test. Furthermore, the coating film of Comparative Example 3 deteriorated in dust adhesion suppression performance both at the initial stage and after 100 hours. The coating film of Comparative Example 4 resulted in deterioration in dust adhesion suppression performance. The coating film of Comparative Example 5 resulted in deterioration in antifungal performance.
As can be seen from the above results, according to the present disclosure, it is possible to provide a coating film that has dust adhesion suppression performance, antifungal performance, and antiviral performance, and that can obtain long-term durability, and an air conditioner equipped with the same. can be done.
　上記の各実施の形態１～３は、互いに組み合わせて実施することが可能である。また、以上の実施の形態に示した構成は、本開示の内容の一例を示すものであり、別の公知の技術と組み合わせることも可能であるし、本開示の要旨を逸脱しない範囲で、構成の一部を省略、変更することも可能である。 The above embodiments 1 to 3 can be implemented in combination with each other. In addition, the configuration shown in the above embodiment shows an example of the content of the present disclosure, and can be combined with another known technique, and the configuration can be configured without departing from the gist of the present disclosure. It is also possible to omit or change part of
１ コーティング膜
２ 基材
３ 第一層
４ 第二層
５ 有機樹脂剤
６ 抗ウイルス剤
７ 無機粒子
８ フッ素樹脂粒子
９ 防かび抗菌剤
１０ 球状樹脂粒子
１００　室内機
１１０　室内機本体
１１１　吸込口
１１２　吹出口
１１３　ドレンパン
１１４　ドレンパン
１１５　送風ファン
１１６　風路壁
１１７　熱交換器
１１８　熱交換器
１１９　熱交換器
１２０　上下風向可変ベーン
１２１　前面パネル 1 Coating film 2 Base material 3 First layer 4 Second layer 5 Organic resin agent 6 Antiviral agent 7 Inorganic particles 8 Fluorine resin particles 9 Antifungal agent 10 Spherical resin particles 100 Indoor unit 110 Indoor unit body 111 Suction port 112 Blow Outlet 113 Drain pan 114 Drain pan 115 Blower fan 116 Air passage wall 117 Heat exchanger 118 Heat exchanger 119 Heat exchanger 120 Vertical wind direction variable vane 121 Front panel

Claims (9)

  1. 　基材上に形成された第一層と、
    　前記第一層上に形成された第二層とを備え、
    　前記第一層は球状樹脂粒子と有機樹脂剤と抗ウイルス剤とを含み、
    　前記第二層は無機粒子とフッ素樹脂粒子と防かび抗菌剤と抗ウイルス剤とを含み、
    　さらに、前記第一層の水接触角が６０度以上１１０度未満であるコーティング膜。     a first layer formed on a substrate;
    and a second layer formed on the first layer,
    The first layer contains spherical resin particles, an organic resin agent and an antiviral agent,
    The second layer contains inorganic particles, fluororesin particles, an antifungal agent and an antiviral agent,
    Further, the coating film, wherein the first layer has a water contact angle of 60 degrees or more and less than 110 degrees.
  2. 　前記フッ素樹脂粒子の表面の一部が前記第二層の表面から露出し、且つ前記第二層の表面に点在する請求項１に記載のコーティング膜。 The coating film according to claim 1, wherein a part of the surface of the fluororesin particles is exposed from the surface of the second layer and scattered on the surface of the second layer.
  3. 　前記第一層に対する前記球状樹脂粒子の含有量が０．１質量％以上１０．０質量％以下であり、
    　前記第二層に対する前記フッ素樹脂粒子の含有量が０．０１質量％以上５．０質量％以下であり、
    　前記第二層に対する前記無機粒子の含有量が０．０１質量％以上５．０質量％以下であり、
    　前記無機粒子と前記フッ素樹脂粒子との合計質量に対して、前記防かび抗菌剤の含有量が０．１質量％以上２５．０質量％以下である請求項１または請求項２に記載のコーティング膜。     The content of the spherical resin particles in the first layer is 0.1% by mass or more and 10.0% by mass or less,
    The content of the fluororesin particles in the second layer is 0.01% by mass or more and 5.0% by mass or less,
    The content of the inorganic particles in the second layer is 0.01% by mass or more and 5.0% by mass or less,
    3. The coating according to claim 1, wherein the content of the antifungal agent is 0.1% by mass or more and 25.0% by mass or less with respect to the total mass of the inorganic particles and the fluororesin particles. film.
  4. 　前記第一層の膜厚が１．０μｍ以上１０．０μm以下であり、
    　前記第二層の膜厚が ０．１μm以上５．０ μm以下である請求項１から請求項３のいずれかに記載のコーティング膜。     The film thickness of the first layer is 1.0 μm or more and 10.0 μm or less,
    4. The coating film according to any one of claims 1 to 3, wherein the second layer has a film thickness of 0.1 µm or more and 5.0 µm or less.
  5. 　前記球状樹脂粒子の平均粒径が０．５μｍ以上１５．０ μｍ以下である請求項４に記載のコーティング膜。 The coating film according to claim 4, wherein the spherical resin particles have an average particle size of 0.5 µm or more and 15.0 µm or less.
  6. 　前記フッ素樹脂粒子の平均粒径が５０ｎｍ以上５００ｎｍ以下である請求項４または請求項５に記載のコーティング膜。 The coating film according to claim 4 or 5, wherein the fluororesin particles have an average particle diameter of 50 nm or more and 500 nm or less.
  7. 　前記無機粒子がシリカ粒子であって、
    　前記シリカ粒子の平均粒径が５ｎｍ以上１００ｎｍ以下である請求項４から請求項６のいずれかに記載のコーティング膜。     The inorganic particles are silica particles,
    7. The coating film according to any one of claims 4 to 6, wherein the silica particles have an average particle size of 5 nm or more and 100 nm or less.
  8. 　前記防かび抗菌剤の粒子の平均粒径が０．１μｍ以上３．０μｍ以下である請求項４から請求項７のいずれかに記載のコーティング膜。 The coating film according to any one of claims 4 to 7, wherein the average particle size of the particles of the antifungal and antibacterial agent is 0.1 µm or more and 3.0 µm or less.
  9. 　請求項１から請求項8のいずれかに記載のコーティング膜が形成されている部品を有した空気調和機。 An air conditioner having a part on which the coating film according to any one of claims 1 to 8 is formed.
PCT/JP2021/046588 2021-12-16 2021-12-16 Coating film and air conditioner provided with same WO2023112271A1 (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004188165A (en) * 2002-10-17 2004-07-08 Toto Ltd Functional member
JP2008036588A (en) * 2006-08-09 2008-02-21 Sumitomo Light Metal Ind Ltd Aluminum fin material for heat exchanger and heat exchanger using the same
JP2009186149A (en) * 2008-02-08 2009-08-20 Sumitomo Light Metal Ind Ltd Aluminum fin material for heat exchanger, and heat exchanger using it
JP2009243741A (en) * 2008-03-31 2009-10-22 Kobe Steel Ltd Aluminum fin material for heat exchanger
JP2012001586A (en) * 2010-06-15 2012-01-05 Mitsubishi Electric Corp Water-based coating composition and coating method using the same
JP2012024713A (en) * 2010-07-26 2012-02-09 Mitsubishi Electric Corp Method for forming antifouling coating film and antifouling member
JP2019100675A (en) * 2017-12-07 2019-06-24 株式会社Uacj Precoat fin material

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004188165A (en) * 2002-10-17 2004-07-08 Toto Ltd Functional member
JP2008036588A (en) * 2006-08-09 2008-02-21 Sumitomo Light Metal Ind Ltd Aluminum fin material for heat exchanger and heat exchanger using the same
JP2009186149A (en) * 2008-02-08 2009-08-20 Sumitomo Light Metal Ind Ltd Aluminum fin material for heat exchanger, and heat exchanger using it
JP2009243741A (en) * 2008-03-31 2009-10-22 Kobe Steel Ltd Aluminum fin material for heat exchanger
JP2012001586A (en) * 2010-06-15 2012-01-05 Mitsubishi Electric Corp Water-based coating composition and coating method using the same
JP2012024713A (en) * 2010-07-26 2012-02-09 Mitsubishi Electric Corp Method for forming antifouling coating film and antifouling member
JP2019100675A (en) * 2017-12-07 2019-06-24 株式会社Uacj Precoat fin material

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