WO2010106762A1 - コーティング組成物、コーティング方法、空気調和機、換気扇、および電気機器 - Google Patents
コーティング組成物、コーティング方法、空気調和機、換気扇、および電気機器 Download PDFInfo
- Publication number
- WO2010106762A1 WO2010106762A1 PCT/JP2010/001692 JP2010001692W WO2010106762A1 WO 2010106762 A1 WO2010106762 A1 WO 2010106762A1 JP 2010001692 W JP2010001692 W JP 2010001692W WO 2010106762 A1 WO2010106762 A1 WO 2010106762A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coating composition
- fine particles
- particles
- peroxide
- resin
- Prior art date
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/012—Additives activating the degradation of the macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09D127/18—Homopolymers or copolymers of tetrafluoroethene
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/02—Emulsion paints including aerosols
- C09D5/024—Emulsion paints including aerosols characterised by the additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1606—Antifouling paints; Underwater paints characterised by the anti-fouling agent
- C09D5/1612—Non-macromolecular compounds
- C09D5/1618—Non-macromolecular compounds inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1606—Antifouling paints; Underwater paints characterised by the anti-fouling agent
- C09D5/1637—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/66—Additives characterised by particle size
- C09D7/67—Particle size smaller than 100 nm
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/28—Nitrogen-containing compounds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/254—Polymeric or resinous material
Definitions
- the present invention relates to a coating composition, a coating method, and an electric device such as an air conditioner and a ventilation fan, and more particularly, an aqueous coating composition for preventing contamination of the surface of a component of the electric device, and a method of coating the component , And coated electrical equipment.
- an attempt has been made to maintain antifouling performance over a long period of time by forming a coating film so that the hydrophilic portion and the hydrophobic portion are exposed independently from each other in a minute region.
- a coating film so that the hydrophilic portion and the hydrophobic portion are exposed independently from each other in a minute region.
- an antifouling coating composition in which an inorganic oxide containing a photocatalytic oxide and a hydrophobic resin are microscopically dispersed and exposed has been proposed (see, for example, Patent Document 1).
- the present invention has been made to solve the above-described problems, and has a high antifouling performance and can improve adhesion to a hydrophobic surface, a coating method, and a coated electric device.
- the purpose is to provide.
- a first coating composition according to the present invention is a coating composition in which hydrophobic resin particles are dispersed in an aqueous medium, and includes hydrophilic inorganic fine particles, peroxide, perchloric acid, and chlorate. And an oxidizing agent containing at least one of persulfuric acid, perphosphoric acid, and periodate.
- the first coating method according to the present invention includes a step of preparing a first agent in which hydrophilic inorganic fine particles and hydrophobic resin particles are dispersed in an aqueous medium; Adding an oxidizing agent containing at least one of oxide, perchloric acid, chlorate, persulfuric acid, perphosphoric acid and periodate to prepare a second agent; and the second agent, Applying to the coated member; And a step of drying the second agent on the member to be coated.
- the antifouling performance can be improved and the adhesion to the material to be coated can be improved.
- FIG. 1 is an explanatory diagram showing an image of a coating composition in which hydrophobic particles and hydrophilic particles are dispersed in an aqueous medium. As shown in FIG.
- the hydrophobic particles 1 and the hydrophilic particles 2 are simply dispersed in the aqueous medium, the hydrophobic particles 1 are dispersed in the hydrophilic particles 2 and the aqueous coating composition.
- the hydrophilic group 3 caused by the active agent or the like is taken into the periphery (for example, the hydrophobic group of the dispersant surrounds the periphery of the hydrophobic particle 1 and is surrounded by the corresponding hydrophilic group 3.
- the periphery of the hydrophobic particle 1 In this case, a dispersant, a surfactant and the like are present. For this reason, the coating film 4 is formed around the hydrophobic particles 1 in a state where hydrophilicity is imparted.
- the hydrophobic part of the hydrophobic particles 1 is arranged so as to be in contact with the member to be coated 5, whereby the coating film 4 is applied to the member to be coated 5. Adhesion can be significantly improved. As shown in FIG.
- the hydrophobic particles 1 that partially retain the hydrophilic groups 3 even when they are cut tend to come into close contact with the surrounding hydrophilic particles 2 having the same polarity, and the hydrophobic particles 1 side is a hydrophobic coated member 5. Try to stabilize by adhering to.
- a hydrophobic portion for eliminating dirt is disposed on the surface of the coating film 4, and the hydrophobic particles 1 having a part of the hydrophilic group 3 are present at the interface between the coating film 4 and the member to be coated 5. Therefore, the function of eliminating dirt and the function of improving the adhesion to the coated member 5 can be exhibited.
- a configuration embodying the technical idea of the present invention will be described.
- the coating composition according to Embodiment 1 of the present invention is a coating composition in which resin particles are dispersed as hydrophobic particles 1 in an aqueous medium, and hydrophilic inorganic particles as hydrophilic particles 2 and hydrophobic particles.
- An oxidizing agent containing at least one of peroxide, perchloric acid, chlorate, persulfuric acid, perphosphoric acid, and periodate is provided as a decomposing agent 6 for decomposing the hydrophilic groups 3 around the particles 1. It is characterized by that.
- the average particle diameter of the hydrophilic inorganic fine particles 2 is preferably 15 nm or less.
- the resin particles 1 are projected onto the surface of the coating film 4 and the fine inorganic fine particles 2 form a substrate of the coating film. Furthermore, the hydrophilic part by the inorganic fine particles 2 is scattered with the hydrophobic part by the resin particles 1 so that the water can be easily spread and the dirt can be eliminated.
- the oxidizing agent having the effect of cutting the hydrophilic groups 3 around the resin particles 1 is used as the decomposing agent 6, the hydrophilic groups caused by the dispersant or the like attached to the hydrophobic resin particles 1.
- the resin particles 1 can be appropriately dispersed in the hydrophilic inorganic fine particles 2, and the hydrophobic portion of the resin particles 1 can be exposed on the surface of the coating film 4.
- the resin particles 1 can be physically inhibited and eliminated.
- hydrophilic group 3 attached to the hydrophobic resin particle 1 decomposed by the oxidizing agent 6 strengthens the binding action with the hydrophilic particle 2, and the hydrophobic portion of the decomposed hydrophobic resin particle 1 is coated. Since the bonding action to the member 5 side is strengthened, it is possible to coat a member that is difficult to coat such as plastic.
- the decomposition reaction by the oxidizing agent 6 in the coating composition of the present invention can be effectively started by a method such as applying heat after coating the member to be coated 5 or mixing an oxidation initiator immediately before coating. it can.
- the oxidizing agent 6 may be separately mixed immediately before coating.
- the oxidizing agent 6 according to the present invention is preferably water-soluble, and preferably has an organic substance decomposing action at room temperature.
- Inorganic oxidants include inorganic peroxides with the chemical formula of hydrogen peroxide metal salt, and peroxides with a structure in which the hydroxy group (—OH) of the oxo acid is replaced with a hydroperoxide group (—O—OH) Can be used. Further, perchloric acids which are a kind of chlorine oxo acids and persulfuric acids which are sulfur oxo acids may be used.
- Organic peroxides are peroxides, compounds having a peroxide structure (—O—O—) as a functional group, or having a percarboxylic acid structure (—C ( ⁇ O) —O—O—) as a functional group Compounds can be used.
- halogenated benzoyl peroxide lauroyl peroxide, acetyl peroxide, dibutyl peroxide, cumene hydroperoxide, butyl hydroperoxide, peroxomonocarbonate, sodium peracetate, potassium peracetate, metachloro as organic oxidants.
- Perbenzoic acid, tert-butyl perbenzoate, percarboxylic acid and the like can be used.
- Inorganic oxidants include peroxides such as hydrogen peroxide, sodium peroxide, potassium peroxide, magnesium peroxide, calcium peroxide and barium peroxide, and peroxides such as ammonium persulfate, sodium persulfate and potassium persulfate.
- Perchlorates such as sulfuric acid, ammonium perchlorate, sodium perchlorate, potassium perchlorate, chlorates such as potassium chlorate, sodium chlorate, ammonium chlorate, calcium perphosphate, potassium perphosphate, etc.
- Periodate salts such as phosphoric acid, sodium periodate, potassium periodate, magnesium periodate and the like can be used.
- the ratio of the oxidant 6 added is preferably 0.1 or more and 25 or less, and more preferably 0.5 or more and 10 or less when the mass of the solid content of the resin particles 1 is 100.
- the oxidizing agent 6 is less than 0.1, a sufficient effect of decomposing the hydrophilic group 3 caused by the dispersing agent, surfactant, stabilizer and the like around the resin particle 1 cannot be obtained.
- it exceeds 25 the oxidizing agent 6 increases, the desired resin particles 1 and inorganic fine particles 2 cannot be contained, and the antifouling function cannot be sufficiently exhibited.
- the resin particles 1 are dispersed using a dispersant such as polyoxyalkylene alkyl ether or polyoxyethylene cetyl ether.
- the hydrophobic resin particles 1 are preferably fluororesin particles, such as PTFE (polytetrafluoroethylene), FEP (tetrafluoroethylene / hexafluoropropylene copolymer), PFA (tetrafluoroethylene / perfluoroalkyl vinyl ether copolymer).
- the resin particles 1 are made of vinyl acetate resin, acrylic resin, phenol resin, silicone-modified acrylic resin, vinylidene chloride resin, vinyl chloride resin, epoxy resin, urethane resin, acrylic urethane resin, silicone resin, polyester resin, polyolefin resin, etc. Resin particles may be used. These copolymers or mixtures can also be used. Other resin particles may be mixed with the resin particles.
- the average particle diameter of the resin particles 1 is preferably about 50 to 500 nm measured by, for example, a light scattering method. More preferably, it is 100 to 250 nm.
- the average particle size the particles are easily dispersed and become sufficiently large particles with respect to the thickness of the coating film 4, and are easily exposed on the surface of the coating film 4. If the average particle size is too large, the region of the hydrophobic portion in the coating film 4 becomes too large, and hydrophobic contaminants tend to adhere. Moreover, the unevenness
- the resin particles 1 are preferably 0.2% by mass or more and 5.0% by mass or less, and more preferably 0.5% by mass or more and 3.0% by mass or less with respect to the coating composition containing an aqueous medium. preferable. If the content of the resin particles 1 is small, a sufficient antifouling effect cannot be obtained. If the content is too large, the oxidant 6 may be added and the coating composition may be agglomerated.
- silica fine particles As the inorganic fine particles 2 according to the present invention, hydrophilic silica fine particles and titanium fine particles can be used.
- silica fine particles have a refractive index close to that of plastic, glass, etc., compared to other inorganic fine particles such as titania and alumina. , It is hard to turn white or glaring. This effect can be further enhanced by the fact that silica is fine particles.
- the average particle diameter of the silica fine particles is preferably about 15 nm or less as measured by the light scattering method.
- the surface portion corresponding to the mass of about 15 to 30% of the mass of the silica fine particle in one silica fine particle can be in a state of being partially dissolved in water in the coating composition.
- the average particle size exceeds 15 nm, the silica component dissolved in water is reduced and it becomes difficult to obtain the action as a binder, so that the strength of the coating film 4 cannot be sufficiently secured and cracks are easily generated.
- the average particle diameter is less than 4 nm, the ratio of the silica component dissolved in the water becomes too high, and the silica particles may aggregate.
- the particle size of the silica fine particles also affects the appearance characteristics such as transparency of the coating film 4. If the silica fine particles have an average particle size of 15 nm or less, the scattering of light reflected by the coating film 4 is reduced, so that the transparency of the coating film 4 is improved, and the color tone and texture of the coated member 5 are suppressed, The color tone and texture of the member to be coated 5 can be prevented from being impaired.
- the silica component in the resulting coating film 4 has fine voids between the silica fine particles while being dense.
- the film thickness can be reduced due to the denseness, and the intermolecular force (adhesion force) with the particles that cause contamination is reduced due to the voids, so that there is an effect of making it difficult to fix.
- the amount of silica fine particles added to the coating composition is preferably 0.5% by mass or more and 5% by mass or less, and more preferably 1% by mass or more and 4% by mass or less. If the amount is too small, the inorganic fine particles 2 become sparse and the base of the coating film 4 cannot be formed. If the amount is too large, the substrate of the coating film 4 becomes too thick and cracks are likely to occur.
- silica fine particles: fluororesin particles solid content mass ratio
- a hydrophilic region composed of silica fine particles and a hydrophobic region composed of fluororesin particles are mixed in a balanced manner.
- the coating film 4 to be obtained is obtained by drying at room temperature. 80:20 is more preferable.
- the coating film The antifouling property of the surface of 4 is improved.
- the inorganic fine particles 2 may be semiconductor or metal fine particles such as silicon, magnesium, aluminum, titanium, cerium, tin, zinc, germanium, indium and antimony. Further, it may be fine particles of oxide or nitride such as magnesium, aluminum, titanium, cerium, tin, zinc, germanium, indium and antimony. The mixture which selected and mixed either of these may be sufficient.
- Water such as deionized water can be used as the aqueous medium according to the present invention. It is better to have less ionic impurities such as calcium ions and magnesium ions in the water.
- the divalent or higher ionic impurity is desirably 200 ppm or less, and more desirably 50 ppm or less.
- the above-mentioned resin particles 1, the above-mentioned inorganic fine particles 2, and the above-mentioned aqueous medium are combined, and the coating film 4 can be formed with a blending ratio suitable for each application. That is, the inorganic fine particles: hydrophobic particles (solid content mass ratio) may be 20:80 to 95: 5 depending on the application.
- the member 5 to be coated is immersed in a coating composition, or it coats on the surface of the member 5 to be coated using a brush etc. Is possible.
- the coating composition is applied in the form of a spray.
- the hydrophobic resin particles 1 have hydrophobic portions on the surface on the dense film having the hydrophilic inorganic fine particles 2 as a base. It can be dispersed in a state of protruding to the other side, and can be applied with improved adhesion to the other member to be coated 5.
- the oxidizing agent 6 can decompose the hydrophilic groups 3 around the hydrophobic resin particles 1, and the decomposed hydrophilic groups 3 can be present at the interface with the coated member 5 in an activated state.
- the addition method of the oxidizing agent 6 is preferably added after the inorganic fine particles 2 and the resin particles 1 are added, mixed and stirred, and then diluted with deionized water. When added without dilution, the amount of the resin particles 1 with respect to the coating composition increases, and thus aggregation may occur.
- the coated member 5 according to the present invention is particularly suitable for parts that cannot easily be cleaned, although oily and water-based dirts are mixed and easily get dirty. It is effective when used for heat exchangers, fans, flaps, etc. of air conditioners. It can be effectively applied as an antifouling coating composition for plastic parts as well as metal parts.
- the area of the hydrophilic portion formed by the hydrophilic inorganic fine particles 2 is the area of the hydrophobic resin particles 1 exposed on the surface of the coating film 4.
- the structure is sufficiently large, and a hydrophobic portion is scattered in a continuous hydrophilic portion. Since the hydrophilic portion is continuous without being divided by the hydrophobic portion, when water droplets adhere to the surface of the coating film 4, the water easily spreads. Therefore, the coating film 4 according to the present invention can maintain a hydrophilic state in which water easily spreads and can coexist a hydrophilic portion and a hydrophobic portion when viewed microscopically in the adhesion of contaminants. . For this reason, it is possible to easily move the moisture on the surface during moisture absorption and drying, and it is possible to release the attached contaminants. Further, since water easily flows and permeates during condensation, rain, and washing, there is an effect that attached contaminants are easily removed.
- the hydrophilicity by the continuous inorganic fine particles 2 is increased. Oil and static electricity can be eliminated and water flow can be ensured at the sex part, and dust and dust can be effectively eliminated by the hydrophobic resin particles 1 on the surface of the coating film 4.
- the adhesion with a plastic material can be remarkably improved, so that the pretreatment can be omitted.
- pretreatment such as UV irradiation, corona discharge treatment, flame treatment, and chromic acid solution immersion is performed on the surface of the member to be coated 5 in advance in order to improve adhesion with the coating composition.
- pretreatment such as UV irradiation, corona discharge treatment, flame treatment, and chromic acid solution immersion is performed on the surface of the member to be coated 5 in advance in order to improve adhesion with the coating composition.
- pretreatment such as UV irradiation, corona discharge treatment, flame treatment, and chromic acid solution immersion is performed on the surface of the member to be coated 5 in advance in order to improve adhesion with the coating composition.
- there is an effect that these can be omitted when the surface treatment and the coating film 4 according to the present invention are used in combination, there is an effect that the surface treatment can be simplified.
- FIG. The coating method according to the second embodiment of the present invention is a method for further preferably coating the coating composition according to the first embodiment. That is, a step of preparing a first agent in which hydrophilic inorganic fine particles 2 and hydrophobic resin particles 1 are dispersed in an aqueous medium so that, for example, the solid content mass ratio is 70:30 to 95: 5.
- an oxidizing agent 6 containing at least one of peroxide, perchloric acid, chlorate, persulfuric acid, perphosphoric acid, and periodate in the first agent, and the solid content of the resin particles 1
- a step of adding a second agent by adding the total mass to 100 at a ratio of, for example, 0.5 to 30; a step of applying the second agent to the member to be coated 5; And a step of drying the second agent.
- a coating film 4 in which the hydrophobic portion of the hydrophobic resin particles 1 is dispersed in a dense film having the hydrophilic inorganic fine particles 2 as a base so as to protrude on the surface. Can be firmly formed on the member to be coated 5.
- the hydrophilic groups 3 around the hydrophobic resin particles 1 can be decomposed, and the hydrophobic portion can be dispersed on the surface of the coating film 4.
- the decomposed hydrophilic group 3 can be present at the interface with the member to be coated in an activated state, it exhibits a strong adhesion.
- drying at room temperature or drying by heating may be performed.
- heat drying it may be performed by blowing warm air or may be heated in a drying furnace.
- the purpose of drying here is to form a film of inorganic fine particles and eliminate fluidity.
- Embodiment 3 The coating method according to Embodiment 3 of the present invention is a method for further preferably coating the coating composition according to Embodiment 1. That is, hydrophilic inorganic fine particles 2 and hydrophobic resin particles 1 are dispersed in an aqueous medium so that, for example, the solid content mass ratio is 70:30 to 95: 5.
- the oxidizing agent 6 containing at least one of acid, chlorate, persulfuric acid, perphosphoric acid, and periodate is, for example, when the mass of the solid content of the resin particles is 100, 0.5 to 30
- a step of preparing a coating composition added at a ratio of, a step of applying the coating composition to the member to be coated 5, and a step of heating the coating composition on the member to be coated 5 It is characterized by.
- a coating film 4 in which the hydrophobic portion of the hydrophobic resin particles 1 is dispersed in a dense film having the hydrophilic inorganic fine particles 2 as a base so as to protrude on the surface. Can be firmly formed on the member to be coated 5.
- the hydrophilic group 3 around the hydrophobic resin particles 1 can be decomposed by heating the oxidizing agent 6 in the coating composition, and the decomposed hydrophilic group 3 is activated. This is because it can intervene at the interface with the member 5 to be coated. Further, there is an effect that the hydrophilic inorganic fine particles 2 and the coated member 5 are firmly adhered by heating.
- the heating according to this embodiment can be performed using hot air, infrared rays, or a heating furnace.
- the heating temperature is 40 ° C. or higher and 90 ° C. or lower, the hydrophilic groups 3 around the hydrophobic resin particles 1 can be decomposed, and the occurrence of cracks in the coating film 4 due to rapid drying can also be suppressed.
- the application method may be brush coating, spraying, and immersion.
- the member to be coated 5 is immersed in the coating composition, if the member to be coated 5 is slowly pulled up and the member to be coated 5 is rotated, the excess coating composition can be removed and uneven coating can be suppressed.
- what is necessary is just to repeat the above-mentioned coating process, when making a film thickness thick.
- the coating method according to Embodiment 4 of the present invention is a method for further preferably coating the coating composition according to Embodiment 1. Specifically, a step of preparing a first agent in which hydrophilic inorganic fine particles 2 and hydrophobic resin particles 1 are mixed in an aqueous medium so that a solid mass ratio is 20:80 to 30:70; An oxidizing agent 6 containing at least one of peroxide, perchloric acid, chlorate, persulfuric acid, perphosphoric acid, and periodate is added to the first agent, and the mass of the solid content of the resin particles 1 is set. 100, the step of adding a ratio of 0.1 to 30 and preparing the second agent, the step of applying the second agent to the member 5 to be coated, and the member 5 to be coated And a step of drying the second agent.
- the hydrophobic portion of the hydrophobic resin particles 1 is projected on the surface in a dense film based on the hydrophilic inorganic fine particles 2.
- the coating film 4 dispersed in a wet state can be firmly formed on the coated member 5.
- the oxidizing agent 6 in the second agent may be added immediately before coating the coated member 5 as in the second embodiment, and is mixed with the coating composition in advance as in the third embodiment and reacted by heating. May be initiated or promoted. In either case, the same effect as in the second and third embodiments can be obtained.
- the solid content mass ratio between the inorganic fine particles 2 and the resin particles 1 is set to 70:30 to 95: 5, and 20:80 to 30:70.
- the solid content of 1 is 100, the example in which the solid content is 0.5 or more and 30 or less and 0.1 or more and 30 or less has been described.
- the content of the resin particles 1 is large with respect to the inorganic fine particles 2, 0.5 or more and 20 or less are preferable. If it is less than 0.5, a sufficient effect of decomposing the hydrophilic groups 3 caused by the dispersant, surfactant, stabilizer and the like around the resin particles 1 cannot be obtained. On the other hand, if it exceeds 20, the balance between the resin particles 1 and the inorganic fine particles 2 on the surface of the coating film 4 is lost, and sufficient antifouling performance cannot be exhibited. Furthermore, sufficient adhesion between the coating film 4 and the material to be coated 5 cannot be obtained.
- FIG. 3 shows a schematic cross-sectional view of an air conditioner according to Embodiment 5 of the present invention.
- the air conditioner 7 circulates the intake port 22 for taking in gas, the heat exchanger 9 for exchanging heat of the gas taken in from the intake port 22, and the gas heat-exchanged by the heat exchanger 9.
- the fan 8 to be formed, the air passage forming member 12 that forms a passage for the gas carried by the fan 8, the vane 10 and the flap 11 that guide the gas invited by the air passage forming member 12, the heat exchanger 9, and the fan 8 And a cover 13 having a built-in structure.
- the coating film 4 by the coating composition of this invention is formed in the one part surface inside the fan 8 and the air-path formation material 12.
- the coating film 4 is formed on a portion having a particularly high antifouling effect, but at least one surface of the fan 8, the heat exchanger 9, the vane 10, the flap 11, the air path forming member 12, and the cover 13 is shown. What is necessary is just to form the coating film 4 by the coating composition of this invention.
- a coating film 4 having a large ratio of the inorganic fine particles 2 is formed on the heat exchanger 9 where it is desired to ensure a certain amount of water flow, and the fan 8 and the air passage forming material 12 that are likely to adhere to dust are hydrophobic.
- the blending ratio can be determined in consideration of the function of each part, such as forming the coating film 4 having a larger ratio of the resin particles 1.
- each of the above components is used as a member to be coated 5, and hydrophobic resin particles 1 for removing dirt are disposed on the surface of the coating film 4 formed thereon, and the coating film 4.
- An adhesion reinforcing layer 14 is formed at the interface between the coated member 5 and the coated member 5.
- 15 is a reaction product of the oxidizing agent 6.
- the average particle diameter of 50 nm or more and 500 nm or less is provided on the surfaces of the heat exchanger 9, the fan 8, and the air passage forming material 12 that are components via the adhesion reinforcing layer 14.
- a coating film 4 having an object is formed.
- the air conditioner dirt on each part on which the coating film 4 is formed can be eliminated, and a clean state can always be maintained. Moreover, even if the air volume is increased, the peeling of the coating film 4 can be suppressed. Although the number of cleanings can be reduced, the coating film 4 can be prevented from being peeled off because the coating film 4 is firmly formed by the adhesion reinforcing layer 14 even when there is an operation for wiping off parts. Therefore, there is an effect that the maintenance characteristics are also excellent.
- FIG. 5 shows a schematic cross-sectional view of a ventilation fan according to Embodiment 6 of the present invention.
- the ventilation fan 21 includes an air inlet 19, a blade body 17 disposed in a passage of gas taken from the air inlet 19, a motor 16 that rotates the blade body 17, and a blade body 17 that is rotated by the motor 16.
- the exhaust port 20 that exhausts the gas by the gas flow formed in the above, and the housing 18 that is connected to the exhaust port 20 and the intake port 19 and incorporates the blade body 17 is provided.
- a coating film 4 made of the coating composition of the present invention is formed on the surface of the blade body 17.
- Hydrophobic resin particles 1 for eliminating dirt are disposed on the surface of the blade body 17, and an adhesion reinforcing layer 14 is formed at the interface between the coating film 4 and the member to be coated 5.
- resin particles having an average particle size of 50 nm or more and 500 nm or less and inorganic particles having an average particle size of 15 nm or less are provided on the surface of the blade body 17 that is a component via the adhesion reinforcing layer 14.
- a coating film 4 having fine particles and a reaction product of an oxidizing agent 6 containing at least one of peroxide, perchloric acid, chlorate, persulfuric acid, perphosphoric acid, and periodate is formed. .
- the ventilation fan 21 dirt on the blade body 17 on which the coating film 4 is formed can be eliminated, and a clean state can be maintained at all times. Moreover, even if the air volume is increased, the peeling of the coating film 4 can be suppressed. Although the number of cleanings can be reduced, the coating film 4 can be prevented from being peeled off because the coating film 4 is firmly formed by the adhesion reinforcing layer 14 even when there is an operation for wiping off parts. Therefore, there is an effect that the maintenance characteristics are also excellent.
- the coating film 4 is formed on the entire blade body 17, it is possible to suppress a decrease in ventilation air volume and noise deterioration due to clogging of the blade.
- Parts other than the blade body 17 may be coated.
- Embodiment 5 the example of the air conditioner and the ventilation fan was described in Embodiment 5 and Embodiment 6, it can be used for each part of electric equipments, such as an elevator, a refrigerator, and a solar cell.
- the material to be coated 5 is not particularly limited, but when used for a plastic member such as polypropylene, polystyrene, ABS resin, or ASG resin, the adhesive strength can be secured and it is effective.
- the coated member 5 was made of stainless steel or plastic.
- the Example shown below does not limit the range of this invention.
- the coating film 4 was formed using a stainless steel substrate having a length of 100 mm, a width of 30 mm, and a thickness of 1 mm as the material to be coated 5.
- Example 1 Deionized water as an aqueous medium, titanium oxide sol (manufactured by Showa Denko) with an average particle size of 10 nm as hydrophilic inorganic fine particles 2, and a polyolefin dispersion (manufactured by Sumitomo Seika) with an average particle size of 200 nm as hydrophobic resin particles 1
- hydrogen peroxide was prepared as an oxidizing agent 6, and 2 mass% of titanium oxide sol, 0.5 mass% of polyolefin dispersion, and 0.01 mass% of hydrogen peroxide were stirred and mixed to prepare a coating composition.
- Example 2 Deionized water as an aqueous medium, colloidal silica (Nissan Chemical Co., Ltd.) having an average particle size of 5 nm as hydrophilic inorganic fine particles 2, and PTFE dispersion (made by Asahi Glass) having an average particle size of 200 nm as hydrophobic resin particles 1 Then, hydrogen peroxide was prepared as the oxidizing agent 6, and 2% by mass of colloidal silica, 0.5% by mass of PTFE dispersion, and 0.01% by mass of hydrogen peroxide were stirred and mixed to prepare a coating composition.
- colloidal silica Nisan Chemical Co., Ltd.
- PTFE dispersion made by Asahi Glass
- Example 3 Deionized water as an aqueous medium, colloidal silica (Nissan Chemical Co., Ltd.) having an average particle size of 5 nm as hydrophilic inorganic fine particles 2, and PTFE dispersion (made by Asahi Glass) having an average particle size of 200 nm as hydrophobic resin particles 1 Then, hydrogen peroxide was prepared as the oxidizing agent 6, and 3% by mass of colloidal silica, 5% by mass of PTFE dispersion, and 0.1% by mass of hydrogen peroxide were stirred and mixed to prepare a coating composition.
- colloidal silica Nisan Chemical Co., Ltd.
- PTFE dispersion made by Asahi Glass
- Example 4 Deionized water as an aqueous medium, colloidal silica (Nissan Chemical Co., Ltd.) having an average particle size of 5 nm as hydrophilic inorganic fine particles 2, and PTFE dispersion (made by Asahi Glass) having an average particle size of 200 nm as hydrophobic resin particles 1 Then, hydrogen peroxide was prepared as the oxidizing agent 6, and 2.3 mass% of colloidal silica, 0.1 mass% of PTFE dispersion, and 0.005 mass% of hydrogen peroxide were stirred and mixed to prepare a coating composition.
- colloidal silica Nisan Chemical Co., Ltd.
- PTFE dispersion made by Asahi Glass
- Example 5 Deionized water as an aqueous medium, colloidal silica (manufactured by Nissan Chemical Co., Ltd.) having an average particle size of 15 nm as hydrophilic inorganic fine particles 2, and PTFE dispersion (manufactured by Asahi Glass) having an average particle size of 200 nm as hydrophobic resin particles 1. Then, hydrogen peroxide was prepared as the oxidizing agent 6, and 2% by mass of colloidal silica, 0.5% by mass of PTFE dispersion, and 0.01% by mass of hydrogen peroxide were stirred and mixed to prepare a coating composition.
- colloidal silica manufactured by Nissan Chemical Co., Ltd.
- PTFE dispersion manufactured by Asahi Glass
- Example 6 Deionized water as an aqueous medium, colloidal silica (Nissan Chemical Co., Ltd.) having an average particle size of 5 nm as hydrophilic inorganic fine particles 2, and PTFE dispersion (made by Asahi Glass) having an average particle size of 500 nm as hydrophobic resin particles 1 Then, hydrogen peroxide was prepared as the oxidizing agent 6, and 2% by mass of colloidal silica, 0.5% by mass of PTFE dispersion, and 0.01% by mass of hydrogen peroxide were stirred and mixed to prepare a coating composition.
- colloidal silica Nisan Chemical Co., Ltd.
- PTFE dispersion made by Asahi Glass
- Example 7 Deionized water as an aqueous medium, colloidal silica (Nissan Chemical Co., Ltd.) having an average particle size of 5 nm as hydrophilic inorganic fine particles 2, and PTFE dispersion (made by Asahi Glass) having an average particle size of 200 nm as hydrophobic resin particles 1 Then, hydrogen peroxide was prepared as the oxidizing agent 6, and 2% by mass of colloidal silica, 0.5% by mass of PTFE dispersion, and 0.0025% by mass of hydrogen peroxide were stirred and mixed to prepare a coating composition.
- colloidal silica Nisan Chemical Co., Ltd.
- PTFE dispersion made by Asahi Glass
- Example 8 Deionized water as an aqueous medium, colloidal silica (Nissan Chemical Co., Ltd.) having an average particle size of 5 nm as hydrophilic inorganic fine particles 2, and PTFE dispersion (made by Asahi Glass) having an average particle size of 200 nm as hydrophobic resin particles 1 Then, ammonium persulfate was prepared as the oxidizing agent 6, and 4.5 mass% colloidal silica, 0.5 mass% PTFE dispersion, and 0.01 mass% ammonium persulfate were stirred and mixed to prepare a coating composition.
- colloidal silica Nisan Chemical Co., Ltd.
- PTFE dispersion made by Asahi Glass
- Example 9 Deionized water as an aqueous medium, colloidal silica (manufactured by Nissan Chemical Co., Ltd.) having an average particle diameter of 5 nm as hydrophilic inorganic fine particles 2, and PTFE dispersion (manufactured by Asahi Glass) having an average particle diameter of 150 nm as hydrophobic resin particles 1 Then, ammonium persulfate was prepared as the oxidizing agent 6, and 2% by mass of colloidal silica, 5.5% by mass of PTFE dispersion, and 0.01% by mass of ammonium persulfate were stirred and mixed to prepare a coating composition.
- colloidal silica manufactured by Nissan Chemical Co., Ltd.
- PTFE dispersion manufactured by Asahi Glass
- Comparative Examples 1 to 4 the following coating compositions were prepared.
- Comparative Example 1 Deionized water as an aqueous medium, colloidal silica (Nissan Chemical Co., Ltd.) having an average particle size of 5 nm as hydrophilic inorganic fine particles 2, and PTFE dispersion (made by Asahi Glass) having an average particle size of 200 nm as hydrophobic resin particles 1
- the coating composition which does not contain the oxidizing agent 6 was prepared by stirring and mixing 2 mass% of colloidal silica and 0.5 mass% of PTFE dispersion.
- [Comparative Example 2] Deionized water as an aqueous medium, colloidal silica (manufactured by Nissan Chemical Co., Ltd.) having an average particle size of 5 nm as hydrophilic inorganic fine particles 2, and hydrogen peroxide as an oxidant 6 are prepared. A coating composition containing no resin particles 1 was prepared by stirring and mixing 0.01% by mass of hydrogen oxide.
- [Comparative Example 3] Prepare deionized water as an aqueous medium, PTFE dispersion (manufactured by Asahi Glass Co., Ltd.) having an average particle diameter of 200 nm as hydrophobic resin particles 1, hydrogen peroxide as an oxidizing agent 6, and 0.5% by mass of PTFE dispersion.
- Colloidal silica manufactured by Nissan Chemical Co., Ltd.
- colloidal silica having a hydrogen oxide content of 0.01% by mass and an average particle size of 30 nm was stirred and mixed to prepare a coating composition containing colloidal silica having a large average particle size.
- [Comparative Example 4] Deionized water as an aqueous medium, colloidal silica (Nissan Chemical Co., Ltd.) having an average particle size of 5 nm as hydrophilic inorganic fine particles 2, and PTFE dispersion (manufactured by Asahi Glass) having an average particle size of 250 nm as hydrophobic resin particles 1.
- colloidal silica Nisan Chemical Co., Ltd.
- PTFE dispersion manufactured by Asahi Glass
- Table 1 shows the blending ratios and the like of the coating compositions of Examples 1 to 9 and Comparative Examples 1 to 4.
- the coating film 4 was formed by applying to the stainless steel substrate 5 and blowing off excess liquid by air blowing, and then formed coating film 4 properties, initial contact angle ⁇ and antifouling performance were evaluated.
- the properties of the coating film 4 were evaluated by visual observation.
- the contact angle ⁇ was measured with a contact angle meter (DM100 manufactured by Kyowa Interface Chemical Co., Ltd.).
- the antifouling performance was evaluated for the adhesion of sand dust, which is a hydrophilic fouling substance, and for carbon dust, which is a hydrophobic fouling substance.
- the sticking property evaluation of the hydrophilic fouling substance was evaluated as sand dust adhesion using a red JIS Kanto loam dust having a central particle diameter of 1 to 3 ⁇ m. Specifically, by coloring the surface of the coating film with air, the coloring due to the sticking of Kanto loam dust was evaluated in five stages by visual observation. In this evaluation, 1 indicates that the Kanto loam dust is hardly fixed, and 5 indicates that the Kanto loam dust is largely fixed. In addition, the sticking property of the hydrophobic fouling substance was evaluated in five stages by visually observing the coloring due to the sticking of the black carbon black by spraying oil-based carbon black on the surface of the coating film with air. In this evaluation, 1 indicates that carbon black is hardly fixed, and 5 indicates that carbon black is largely fixed. The evaluation results are shown in Table 2.
- the coating films 4 formed from the coating compositions of Examples 1 to 8 all showed excellent antifouling performance against both hydrophilic and hydrophobic fouling substances. From Examples 2 to 8, those using silica fine particles as the inorganic fine particles 2 and fluororesin particles as the resin particles 1 showed good performance. Since the coating film 4 of the embodiment of the present invention is based on a continuous continuous hydrophilic silica film, the contact angle generally shows a low value. However, in the micro region (microscopically), hydrophilicity is present. Silica fine particles and hydrophobic fluororesin particles are alternately arranged at nano level continuously.
- the resin particles 1 when the arranged resin particles 1 form the coating film 4, the resin particles 1 are cut by the oxidizing agent 6 to which the hydrophilic groups 3 existing around the resin particles 1 are added, and the hydrophilic groups 3 on the surface of the resin particles 1 are reduced. Therefore, the resin particle 1 can improve the hydrophobic function.
- the antifouling performance of the coating film 4 to be formed could be adjusted by adjusting the content (weight ratio) of the silica fine particles and the fluororesin particles. Increasing the proportion of silica fine particles can suppress adhesion of hydrophobic fouling substances, and increasing the proportion of fluorine can suppress adhesion of hydrophilic fouling substances. In Example 2 where the silica fine particle: fluororesin particle solid content ratio is 80:20, it can be seen that the adhesion amount of both the hydrophilic fouling substance and the hydrophobic fouling substance is minimized.
- Example 9 the content of the fluororesin particles was large and it was confirmed that the particles were slightly agglomerated, and the state of the coating forming film was a fine white film.
- Comparative Example 3 cracks occurred due to the large silica particle diameter. For this reason, dirt was easily caught and the antifouling performance was deteriorated.
- the silica particle diameter needs to be fine particles.
- sodium chlorite cannot sufficiently cut the hydrophilic groups on the surface of the resin particles, so it seems that the antifouling performance is poor.
- Example 10 A coating composition similar to Example 2 was prepared.
- Example 11 Deionized water, 1.7% by mass of colloidal silica having an average particle size of 5 nm (Nissan Chemical Co., Ltd.), 5% by mass of PTFE dispersion having an average particle size of 200 nm (manufactured by Asahi Glass), 0.1% hydrogen peroxide as the oxidizing agent 6 A coating composition was prepared by stirring and mixing mass%.
- Example 12 Deionized water, 3% by mass of colloidal silica (Nissan Chemical Co., Ltd.) having an average particle diameter of 5 nm, 0.25% by mass of PTFE dispersion (Asahi Glass) having an average particle diameter of 200 nm, 0.01% hydrogen peroxide as the oxidant 6 A coating composition was prepared by stirring and mixing by mass%.
- Comparative Examples 5 to 7 the following coating compositions were prepared.
- a coating composition was prepared by stirring and mixing deionized water and 2% by mass of colloidal silica (Nissan Chemical Co., Ltd.) having an average particle size of 20 nm and 0.5% by mass of PTFE dispersion (Asahi Glass) having an average particle size of 200 nm.
- a coating composition is prepared by mixing 3% by mass of deionized water and colloidal silica (Nissan Chemical Co., Ltd.) having an average particle size of 5 nm and 0.01% by mass of hydrogen peroxide as an oxidant 6, and includes resin particles 1 Something that was not made.
- Comparative Example 7 In Comparative Example 7, deionized water, 2% by mass of colloidal silica (Nissan Chemical Co., Ltd.) having an average particle size of 20 nm, 0.5% by mass of PTFE dispersion (Asahi Glass Co., Ltd.) having an average particle size of 200 nm, and chlorous acid as a decomposition agent A coating composition was prepared by mixing 0.01% by mass of sodium with stirring.
- the plastic flat plate 5 was immersed in the coating compositions prepared in Examples 10 to 12 and Comparative Examples 5 to 7, and the coating film 4 was formed by slowly pulling it up.
- heating was performed at 60 ° C. for 18 hours.
- Comparative Example 7 was dried at 25 ° C. for 18 hours.
- Table 3 shows the blending ratios of the coating compositions of Examples 10 to 12 and Comparative Examples 5 to 7.
- the properties, initial contact angle ⁇ , and antifouling performance of the coating film 4 formed in the same manner as in the experiment using the stainless steel substrate were evaluated.
- the evaluation of adhesion was performed by the following method. The gauze that was folded and moistened with water was pressed against the coating surface with a 5 cm square pressing surface, and a reciprocating motion of 10 cm was applied while applying a weight of 100 g weight / cm 2. The number of reciprocations until the coating film 4 started to peel was used as an index of the strength of adhesion.
- the coating films formed from the coating compositions of Examples 9 to 11 all showed excellent antifouling performance against both hydrophilic and hydrophobic fouling substances. Moreover, compared with the comparative example 5 which did not add the oxidizing agent 6, the effect of the adhesive improvement was able to be acquired clearly. In Comparative Example 6 in which the coating composition was formed using only silica fine particles, the coating film 4 could not be formed on a plastic member having a high surface water repellency. Moreover, in Example 10, the hydrophilicity can be improved by increasing the amount of silica fine particles added, and excellent antifouling performance was exhibited against both hydrophilic and hydrophobic fouling substances.
- Comparative Example 5 has a lot of dust adhesion. Since the oxidizing agent 6 is not added, it is presumed that the hydrophilic group on the surface of the fluororesin particles scattered in the coating film 4 cannot be reduced, and the function as the hydrophobic portion is not sufficiently obtained. Further, the adhesion to the plastic member 6 is very weak. In Comparative Example 7, the adhesion was not obtained.
- a coating film 4 was formed using a polypropylene plastic substrate having a length of 100 mm, a width of 30 mm, and a thickness of 1 mm as the material to be coated 5.
- Example 13 Deionized water as an aqueous medium, colloidal silica (Nissan Chemical Co., Ltd.) having an average particle size of 5 nm as hydrophilic inorganic fine particles 2, and PTFE dispersion (made by Asahi Glass) having an average particle size of 200 nm as hydrophobic resin particles 1
- Ammonium sulfate (A) was prepared as oxidizing agent 6, colloidal silica 2% by mass, PTFE dispersion 0.5% by mass, 0.05% by mass of the oxidizing agent were added, and the mixture was stirred and mixed to prepare a coating composition. .
- Example 14 Sodium sulfate (B) was prepared as the oxidizing agent 6 and the coating composition was prepared in the same manner as in Example 13.
- Example 15 A coating composition was prepared in the same manner as in Example 13 except that sodium hydrogen carbonate (C) was prepared as the oxidizing agent 6.
- Example 16 A coating composition was prepared in the same manner as in Example 13 except that sodium sulfite (D) was prepared as the oxidizing agent 6.
- Example 17 Hydrogen peroxide (E) was prepared as the oxidizing agent 6 and the coating composition was prepared in the same manner as in Example 13.
- Example 18 Ammonium persulfate (F) was prepared as the oxidizing agent 6 and the coating composition was prepared in the same manner as in Example 13.
- Example 19 A coating composition was prepared in the same manner as in Example 13 except that sodium persulfate (G) was prepared as the oxidizing agent 6.
- Example 8 A coating composition was prepared in the same manner as in Example 13 except that the oxidizing agent 6 was not added (H).
- a plastic substrate was dipped in the coating compositions according to Examples 13 to 19 and Comparative Example 8, slowly pulled up, and then gauze was pressed against each dried coating film with a pressing surface of 5 cm square, and 1 kg weight / cm 2. Adhesion was evaluated by using a reciprocating motion of 10 cm while applying a load, and using the number of reciprocations until the respective coating films peeled as an index of the strength of the adhesive force.
- the coating films according to Examples 13 to 19 (A to G) to which the oxidizing agent 6 was added had a number of reciprocations from the coating film according to Comparative Example 8 (H) to which the oxidizing agent 6 was not added until peeling. It was found that the adhesion was excellent.
- the adhesion of the coating films according to Examples 17, 18, and 19 in which hydrogen peroxide (E), ammonium persulfate (F), and sodium persulfate (G), which are peroxides, are added as the oxidant 6 are used. Is excellent. From these, it can be seen that the adhesiveness can be ensured without previously performing a surface treatment such as an ultraviolet irradiation treatment or a corona discharge treatment on a plastic substrate having poor adhesion.
- a coating film 4 was formed using a polypropylene plastic substrate having a length of 100 mm, a width of 30 mm, and a thickness of 1 mm as the material to be coated 5.
- Example 20 Deionized water as an aqueous medium, colloidal silica (Nissan Chemical Co., Ltd.) having an average particle size of 5 nm as hydrophilic inorganic fine particles 2, and PTFE dispersion (manufactured by Asahi Glass) having an average particle size of 250 nm as hydrophobic resin particles 1. Then, hydrogen peroxide was prepared as the oxidant 6, colloidal silica 0.3% by mass, PTFE dispersion 1.1% by mass, and oxidant 0.05% by mass were added and stirred to prepare a coating composition. .
- Example 21 In the same manner as in Example 20, an aqueous medium, inorganic fine particles 2, resin particles 1, and oxidizing agent 6 were prepared, colloidal silica 1.4% by mass, PTFE dispersion 0.6% by mass, and oxidizing agent 0.05% by mass. A coating composition was prepared by adding and stirring and mixing.
- the coating composition in which the solid content mass ratio of the inorganic fine particles 2 and the resin particles 1 shown in Table 5 is changed is coated on a polypropylene plastic substrate having a length of 100 mm ⁇ width of 30 mm ⁇ thickness of 1 mm, and the transparency of the coating film 4
- the adhesion was evaluated in the same manner as in Examples 10-12.
- the mass of the solid content of the resin particle 1 is 100, the oxidizing agent 6 is more preferably 2 or more and 10 or less. If it is less than 2, sufficient effects of decomposing the hydrophilic groups 3 caused by the dispersant, surfactant, stabilizer, etc. around the resin particles 1 cannot be obtained. If it exceeds 10, the oxidizing agent 6 increases, the desired resin particles 1 and inorganic fine particles 2 cannot be contained, and the antifouling function cannot be sufficiently exhibited.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Dispersion Chemistry (AREA)
- Nanotechnology (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
かかる問題を解決するために、親水性部分と疎水性部とを微小領域で相互に独立して露出するようにコーティング膜を形成することによって長期間にわたって防汚性能を維持する方法も試みられている。例えば、光触媒性酸化物を含む無機酸化物と疎水性樹脂を微視的に分散させて露出させる防汚コーティング組成物が提案されている(例えば、特許文献1参照)。
さらに、親水性部として、酸化チタンやシリカ等の無機粒子を用いる場合、プラスチック等の疎水性表面との相性が悪く、付着力が弱いためコーティング膜が形成できない、コーティングできても剥がれが発生しやすいという問題もあった。
また、本発明に係る第1のコーティング方法は、水性媒体中に、親水性の無機微粒子と疎水性の樹脂粒子とが分散された第1剤を準備する工程と、前記第1剤に、過酸化物、過塩素酸、塩素酸塩、過硫酸、過リン酸、過ヨウ素酸塩の少なくともいずれかを含む酸化剤を添加して、第2剤を準備する工程と、前記第2剤を、被コーティング部材に塗布する工程と、
前記被コーティング部材上の前記第2剤を乾燥させる工程とを備えたことを特徴とする。
上記推測した現象を図を用いて説明する。図1は、水性媒体中に疎水性粒子および親水性粒子が分散されたコーティング組成物のイメージを示す説明図である。図1に示すように単に水性媒体中に疎水性粒子1および親水性粒子2を分散させたのみでは、疎水性粒子1は親水性粒子2および水系コーティング組成物に分散するため、分散剤、界面活性剤等に起因する親水基3を周囲に取り込む(例えば分散剤の疎水基が疎水性粒子1の周囲を取り囲み、これに対応する親水基3に取り囲まれる。その結果、疎水性粒子1の周囲に分散剤、界面活性剤等が存在することとなる)。このため、疎水性粒子1の周囲には親水性が付与された状態で、コーティング膜4を形成する。したがって汚れを排除するための疎水部をコーティング膜4の表面に露出させることが困難となる。
そこで、図2に示すように、分解剤6によって疎水性粒子1の周囲の親水基3を分解させれば、疎水部を露出させ、効果的に疎水部をコーティング膜4の表面に露出させることが可能となる。これにより防汚機能を向上できる。
さらに、特に被コーティング部材5が疎水性のプラスチック材である場合には、疎水性粒子1の疎水部を被コーティング部材5に接するように配置させることにより、コーティング膜4の被コーティング部材5への密着性を著しく向上できる。
図2に示すように、分解剤6により親水基3が切断され親水基3を保有しなくなった疎水性粒子1は、周りの親水性粒子2と異なる極性のため、反発されてコーティング膜の表面に析出しやすくなる。一方、切断されても一部親水基3を保有する疎水性粒子1は、同じ極性である周りの親水性粒子2と密着しようとするとともに、疎水性粒子1側は疎水性の被コーティング部材5に付着することで安定化しようとする。
その結果、コーティング膜4の表面には、汚れを排除するための疎水部が配置され、かつコーティング膜4と被コーティング部材5の界面には、一部親水基3を保有する疎水性粒子1が配置されることとなり、汚れを排除する機能と、被コーティング部材5への密着性を高める機能を発揮できる。
以下、本発明の技術的思想を具体化させた構成について説明する。
本発明の実施の形態1に係るコーティング組成物は、水性媒体中に疎水性粒子1として樹脂粒子が分散されたコーティング組成物であって、親水性粒子2として親水性の無機微粒子と、疎水性粒子1の周囲の親水基3を分解させる分解剤6として過酸化物、過塩素酸、塩素酸塩、過硫酸、過リン酸、過ヨウ素酸塩の少なくともいずれかを含む酸化剤とを備えたことを特徴とする。ここで、親水性の無機微粒子2の平均粒径は15nm以下が好ましい。樹脂粒子1をコーティング膜4の表面に突き出し、細かな無機微粒子2でコーティング膜の基体を形成するためである。
さらに無機微粒子2による親水部に樹脂粒子1による疎水部を点在させることで水を拡がりやすくでき、かつ汚れも排除できる。
本発明に係る酸化剤6は、水溶性が好ましく、常温で有機物分解作用があるものが好ましい。無機系酸化剤では、過酸化水素の金属塩の化学式をとる無機過酸化物、およびオキソ酸のヒドロキシ基(-OH)をヒドロペルオキシド基(-O-OH)に置き換えた構造を持つ過酸化物を用いることができる。また、塩素のオキソ酸の一種である過塩素酸類、硫黄のオキソ酸である過硫酸類を用いてもよい。
有機系酸化剤では過酸化物である、官能基としてペルオキシド構造(-O-O-)を有する化合物、または官能基として過カルボン酸構造(-C(=O)-O-O-)を有する化合物を用いることができる。
また、無機系酸化剤として、過酸化水素、過酸化ナトリウム、過酸化カリウム、過酸化マグネシウム、過酸化カルシウム、過酸化バリウム等の過酸化物、過硫酸アンモニウム、過硫酸ナトリウム、過硫酸カリウム等の過硫酸、過塩素酸アンモニウム、過塩素酸ナトリウム、過塩素酸カリウム等の過塩素酸塩、塩素酸カリウム、塩素酸ナトリウム、塩素酸アンモニウム等の塩素酸塩、過リン酸カルシウム、過リン酸カリウム等の過リン酸、過ヨウ素酸ナトリウム、過ヨウ素酸カリウム、過ヨウ素酸マグネシウム等の過ヨウ素酸塩を用いることができる。
本発明に係る樹脂粒子1は、コーティング組成物中に分散される必要があるため、例えばポリオキシアルキレンアルチルエーテル、ポリオキシエチレンセチルエーテル等の分散剤を用いて分散させる。疎水性の樹脂粒子1は、フッ素樹脂粒子が好ましく、例えば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)、これらの共重合体もしくは混合物を用いることができる。上記樹脂粒子に他の樹脂粒子を混合してもよい。
本発明に係る無機微粒子2は、親水性のシリカ微粒子、チタン微粒子を用いることができる。特に、シリカ微粒子は、チタニアやアルミナ等の他の無機微粒子に比べて、屈折率がプラスチックやガラス等に近い値であるため、これらを被コーティング部材5とした場合、界面や表面の光反射により、白くなったり、ぎらついたりしにくい。シリカが微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。シリカ微粒子の平均粒径は、上述のとおり、例えば光散乱法測定による平均粒径15nm程度以下が好ましい。
平均粒径が4nm未満では、半ば水に溶解した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可能性がある。
本発明に係る水性媒体は、脱イオン水などの水を用いることができる。水中に含まれるカルシウムイオンやマグネシウムイオン等のイオン性不純物は少ないほうが良い。2価以上のイオン性不純物が200ppm以下であることが望ましく、より望ましくは50ppm以下である。
本実施の形態に係るコーティング組成物のコーティング方法は、特に限定するものではないが、被コーティング部材5をコーティング組成物中に浸漬する、またははけ等を用いて被コーティング部材5表面に塗ることが可能である。またコーティング組成物を噴霧状にして塗布する方法もある。
本実施の形態に係るコーティング組成物を被コーティング部材5に塗布後乾燥させることにより、親水性の無機微粒子2を基体とした緻密な膜上に、疎水性の樹脂粒子1が疎水部を表面上に突出させた状態で分散され、他方被コーティング部材5との密着力を向上させて塗布できる。酸化剤6により疎水性の樹脂粒子1の周囲の親水基3を分解でき、分解された親水基3は活性化させた状態で被コーティング部材5との界面に介在できるためである。
本発明に係る被コーティング部材5は、特に油性、水性の汚れが混在し汚れがつき易いが、頻繁に清掃できない部品が適する。空調機の熱交換器、ファン、フラップ等に用いると効果的である。金属部品のみでなく、プラスチック部品の防汚コーティング組成物として効果的に適用できる。
したがって、本発明に係るコーティング膜4は、水が拡がりやすいという高い親水性の状態で維持しつつ、汚染物質の付着において微視的に見れば親水性部と疎水性部を共存させることができる。このため、吸湿時や乾燥時の表面の水分の移動を容易にでき、付着した汚染物質を遊離させることも可能である。また、結露時や降雨時や洗浄時には、水が流れやすく浸透しやすいことから、付着した汚染物質が除去されやすいという効果もある。
被コーティング部材がプラスチック材である場合、コーティング組成物との密着力を向上させるため、予め被コーティング部材5表面へUV照射、コロナ放電処理、フレーム処理、クロム酸液浸漬などの前処理を行うことが通常であったが、これらを省略できる効果がある。表面処理と本発明に係るコーティング膜4と併用する場合には表面処理を簡略化できる効果がある。
本発明の実施の形態2に係るコーティング方法は、実施の形態1に係るコーティング組成物をさらに好ましくコーティングする方法である。
すなわち、水性媒体中に、親水性の無機微粒子2と疎水性の樹脂粒子1とが、例えば固形分質量比が70:30~95:5となるように分散された第1剤を準備する工程と、前記第1剤に、過酸化物、過塩素酸、塩素酸塩、過硫酸、過リン酸、過ヨウ素酸塩の少なくともいずれかを含む酸化剤6を、前記樹脂粒子1の固形分の全質量を100として例えば0.5以上30以下の割合で添加して、第2剤を準備する工程と、前記第2剤を、被コーティング部材5に塗布する工程と、前記被コーティング部材5上の前記第2剤を乾燥させる工程とを備えたことを特徴とする。
本発明の実施の形態3に係るコーティング方法は、実施の形態1に係るコーティング組成物をさらに好ましくコーティングする方法である。
すなわち、水性媒体中に、親水性の無機微粒子2と疎水性の樹脂粒子1とが、例えば固形分質量比が70:30~95:5となるように分散され、さらに過酸化物、過塩素酸、塩素酸塩、過硫酸、過リン酸、過ヨウ素酸塩の少なくともいずれかを含む酸化剤6を、例えば前記樹脂粒子の固形分の質量を100とした場合に、0.5以上30以下の割合で添加したコーティング組成物を準備する工程と、前記コーティング組成物を、被コーティング部材5に塗布する工程と、前記被コーティング部材5上の前記コーティング組成物を加熱する工程とを備えたことを特徴とする。
被コーティング部材5にコーティング後、コーティング組成物中の酸化剤6を加熱することにより、疎水性の樹脂粒子1の周辺の親水基3を分解でき、分解された親水基3は活性化させた状態で被コーティング部材5との界面に介在できるためである。また、加熱により、親水性の無機微粒子2と被コーティング部材5とを強固に密着させる効果がある。
本発明の実施の形態4に係るコーティング方法は、実施の形態1に係るコーティング組成物をさらに好ましくコーティングする方法である。
すなわち、水性媒体中に、親水性の無機微粒子2と疎水性の樹脂粒子1とが固形分質量比が20:80~30:70となるように混合された第1剤を準備する工程と、前記第1剤に、過酸化物、過塩素酸、塩素酸塩、過硫酸、過リン酸、過ヨウ素酸塩の少なくともいずれかを含む酸化剤6を、前記樹脂粒子1の固形分の質量を100とした場合に、0.1以上30以下の割合で添加して、第2剤を準備する工程と、前記第2剤を、被コーティング部材5に塗布する工程と、前記被コーティング部材5上の前記第2剤を乾燥させる工程とを備えたことを特徴とする。
図3に、本発明の実施の形態5に係る空気調和機の概略断面図を示す。図3において、空気調和機7は、気体を取り込む取込口22と、取込口22から取り込んだ気体の熱を交換する熱交換器9と、熱交換器9により熱交換された気体を循環させるファン8と、ファン8により運ばれた気体の通り道を形成する風路形成部材12と、風路形成部材12により招かれた気体を導くベーン10およびフラップ11と、熱交換器9、ファン8を内蔵するカバー13とを具備する。そして、ファン8および風路形成材12の内側の一部の表面に、本発明のコーティング組成物によるコーティング膜4が形成されている。
図5に、本発明の実施の形態6に係る換気扇の概略断面図を示す。図5において、換気扇21は、吸気口19と、吸気口19から取り込んだ気体の通路に配置された羽根体17と、羽根体17を回転させるモータ16と、モータ16により回転された羽根体17で形成された気体の流れにより気体を排気する排気口20と、排気口20および吸気口19に連結され、羽根体17を内蔵する筐体18とを備える。そして、羽根体17の表面には、本発明のコーティング組成物によるコーティング膜4が形成されている。
[実施例1]
水性媒体として脱イオン水を、親水性の無機微粒子2として平均粒径10nmの酸化チタンゾル(昭和電工製)を、疎水性の樹脂粒子1として平均粒径200nmのポリオレフィンディスパージョン(住友精化製)を、酸化剤6として過酸化水素を準備し、酸化チタンゾル2質量%、ポリオレフィンディスパージョン0.5質量%、過酸化水素0.01質量%を撹拌混合してコーティング組成物を調製した。
水性媒体として脱イオン水を、親水性の無機微粒子2として平均粒径5nmのコロイダルシリカ(日産化学社製)を、疎水性の樹脂粒子1として平均粒径200nmのPTFEディスパージョン(旭硝子製)を、酸化剤6として過酸化水素を準備し、コロイダルシリカ2質量%、PTFEディスパージョン0.5質量%、過酸化水素0.01質量%を撹拌混合してコーティング組成物を調製した。
水性媒体として脱イオン水を、親水性の無機微粒子2として平均粒径5nmのコロイダルシリカ(日産化学社製)を、疎水性の樹脂粒子1として平均粒径200nmのPTFEディスパージョン(旭硝子製)を、酸化剤6として過酸化水素を準備し、コロイダルシリカ3質量%、PTFEディスパージョン5質量%、過酸化水素0.1質量%を撹拌混合してコーティング組成物を調製した。
水性媒体として脱イオン水を、親水性の無機微粒子2として平均粒径5nmのコロイダルシリカ(日産化学社製)を、疎水性の樹脂粒子1として平均粒径200nmのPTFEディスパージョン(旭硝子製)を、酸化剤6として過酸化水素を準備し、コロイダルシリカ2.3質量%、PTFEディスパージョン0.1質量%、過酸化水素0.005質量%を撹拌混合してコーティング組成物を調製した。
水性媒体として脱イオン水を、親水性の無機微粒子2として平均粒径15nmのコロイダルシリカ(日産化学社製)を、疎水性の樹脂粒子1として平均粒径200nmのPTFEディスパージョン(旭硝子製)を、酸化剤6として過酸化水素を準備し、コロイダルシリカ2質量%、PTFEディスパージョン0.5質量%、過酸化水素0.01質量%を撹拌混合してコーティング組成物を調製した。
水性媒体として脱イオン水を、親水性の無機微粒子2として平均粒径5nmのコロイダルシリカ(日産化学社製)を、疎水性の樹脂粒子1として平均粒径500nmのPTFEディスパージョン(旭硝子製)を、酸化剤6として過酸化水素を準備し、コロイダルシリカ2質量%、PTFEディスパージョン0.5質量%、過酸化水素0.01質量%を撹拌混合してコーティング組成物を調製した。
水性媒体として脱イオン水を、親水性の無機微粒子2として平均粒径5nmのコロイダルシリカ(日産化学社製)を、疎水性の樹脂粒子1として平均粒径200nmのPTFEディスパージョン(旭硝子製)を、酸化剤6として過酸化水素を準備し、コロイダルシリカ2質量%、PTFEディスパージョン0.5質量%、過酸化水素0.0025質量%を撹拌混合してコーティング組成物を調製した。
水性媒体として脱イオン水を、親水性の無機微粒子2として平均粒径5nmのコロイダルシリカ(日産化学社製)を、疎水性の樹脂粒子1として平均粒径200nmのPTFEディスパージョン(旭硝子製)を、酸化剤6として過硫酸アンモニウムを準備し、コロイダルシリカ4.5質量%、PTFEディスパージョン0.5質量%、過硫酸アンモニウム0.01質量%を撹拌混合してコーティング組成物を調製した。
水性媒体として脱イオン水を、親水性の無機微粒子2として平均粒径5nmのコロイダルシリカ(日産化学社製)を、疎水性の樹脂粒子1として平均粒径150nmのPTFEディスパージョン(旭硝子製)を、酸化剤6として過硫酸アンモニウムを準備し、コロイダルシリカ2質量%、PTFEディスパージョン5.5質量%、過硫酸アンモニウム0.01質量%を撹拌混合してコーティング組成物を調製した。
[比較例1]
水性媒体として脱イオン水を、親水性の無機微粒子2として平均粒径5nmのコロイダルシリカ(日産化学社製)を、疎水性の樹脂粒子1として平均粒径200nmのPTFEディスパージョン(旭硝子製)を準備し、コロイダルシリカ2質量%、PTFEディスパージョン0.5質量%を撹拌混合して、酸化剤6を含まないコーティング組成物を調製した。
水性媒体として脱イオン水を、親水性の無機微粒子2として平均粒径5nmのコロイダルシリカ(日産化学社製)を、酸化剤6として過酸化水素を準備し、コロイダルシリカ2.3質量%、過酸化水素0.01質量%を撹拌混合して、樹脂粒子1を含まないコーティング組成物を調製した。
水性媒体として脱イオン水を、疎水性の樹脂粒子1として平均粒径200nmのPTFEディスパージョン(旭硝子製)を、酸化剤6として過酸化水素を準備し、PTFEディスパージョン0.5質量%、過酸化水素0.01質量%、平均粒径30nmのコロイダルシリカ(日産化学社製)を撹拌混合して、平均粒径の大きなコロイダルシリカを含ませたコーティング組成物を調製した。
水性媒体として脱イオン水を、親水性の無機微粒子2として平均粒径5nmのコロイダルシリカ(日産化学社製)を、疎水性の樹脂粒子1として平均粒径250nmのPTFEディスパージョン(旭硝子製)を準備し、コロイダルシリカ2質量%、PTFEディスパージョン0.5質量%、亜塩素酸ナトリウムを0.01質量%を撹拌混合して、酸化剤6には酸化しにくい亜塩素酸ナトリウムを用いたコーティング組成物を調製した。
実施例2と同様のコーティング組成物を調製した。
脱イオン水及び平均粒径5nmのコロイダルシリカ(日産化学社製)1.7質量%および平均粒径200nmのPTFEディスパージョン(旭硝子製)5質量%、酸化剤6として過酸化水素を0.1質量%を、撹拌混合してコーティング組成物を調製した。
脱イオン水及び平均粒径5nmのコロイダルシリカ(日産化学社製)3質量%および平均粒径200nmのPTFEディスパージョン(旭硝子製)0.25質量%、酸化剤6として過酸化水素を0.01質量%撹拌混合してコーティング組成物を調製した。
[比較例5]
脱イオン水及び平均粒径20nmのコロイダルシリカ(日産化学社製)2質量%および平均粒径200nmのPTFEディスパージョン(旭硝子製)0.5質量%を撹拌混合してコーティング組成物を調製した。
脱イオン水及び平均粒径5nmのコロイダルシリカ(日産化学社製)3質量%および酸化剤6として過酸化水素を0.01質量%撹拌混合してコーティング組成物を調製し、樹脂粒子1を含まないものを作製した。
比較例7では、脱イオン水及び平均粒径20nmのコロイダルシリカ(日産化学社製)2質量%および平均粒径200nmのPTFEディスパージョン(旭硝子製)0.5質量%、分解剤として亜塩素酸ナトリウムを0.01質量%撹拌混合してコーティング組成物を調製した。
実施例10~12および比較例5、6は60℃、18時間の加熱を行った。比較例7は25℃で18時間乾燥した。
表3に実施例10~12および比較例5~7のコーティング組成物の配合比を示す。
また、密着性の評価は以下の方法で行った。折り畳んで水で湿らせたガーゼを、5cm角の押し付け面でコーティング面に押し付け、100g重/cm2の加重をかけながら10cmの往復運動をさせた。コーティング膜4が剥離を開始するまでの往復回数を密着力の強さの指標とした。
また、実施例10において、シリカ微粒子の添加量を増加することで、親水性が向上することができ、また親水性、疎水性の両方の汚損物質に対して優れた防汚性能を示した。
水性媒体として脱イオン水を、親水性の無機微粒子2として平均粒径5nmのコロイダルシリカ(日産化学社製)を、疎水性の樹脂粒子1として平均粒径200nmのPTFEディスパージョン(旭硝子製)を、酸化剤6として硫酸アンモニウム(A)を準備し、コロイダルシリカ2質量%、PTFEディスパージョン0.5質量%、前記酸化剤を0.05質量%添加し、撹拌混合してコーティング組成物を調製した。
酸化剤6として硫酸ナトリウム(B)を準備し、他は実施例13と同様にしてコーティング組成物を調製した。
酸化剤6として炭酸水素ナトリウム(C)を準備し、他は実施例13と同様にしてコーティング組成物を調製した。
酸化剤6として亜硫酸ナトリウム(D)を準備し、他は実施例13と同様にしてコーティング組成物を調製した。
酸化剤6として過酸化水素(E)を準備し、他は実施例13と同様にしてコーティング組成物を調製した。
酸化剤6として過硫酸アンモニウム(F)を準備し、他は実施例13と同様にしてコーティング組成物を調製した。
酸化剤6として過硫酸ナトリウム(G)を準備し、他は実施例13と同様にしてコーティング組成物を調製した。
酸化剤6を添加せず(H)、他は実施例13と同様にしてコーティング組成物を調製した。
特に、酸化剤6として過酸化剤である過酸化水素(E)、過硫酸アンモニウム(F)、過硫酸ナトリウム(G)を添加した実施例17、実施例18、実施例19によるコーティング膜の密着性が優れる。
これらにより、もともと密着性の悪いプラスチック基材に、予め紫外線照射処理やコロナ放電処理等の表面処理を行わなくても密着性を確保できることがわかる。
水性媒体として脱イオン水を、親水性の無機微粒子2として平均粒径5nmのコロイダルシリカ(日産化学社製)を、疎水性の樹脂粒子1として平均粒径250nmのPTFEディスパージョン(旭硝子製)を、酸化剤6として過酸化水素を準備し、コロイダルシリカ0.3質量%、PTFEディスパージョン1.1質量%、酸化剤を0.05質量%添加し、撹拌混合してコーティング組成物を調製した。
実施例20と同様に、水性媒体、無機微粒子2、樹脂粒子1、酸化剤6を準備し、コロイダルシリカ1.4質量%、PTFEディスパージョン0.6質量%、酸化剤を0.05質量%添加し、撹拌混合してコーティング組成物を調製した。
酸化剤6は樹脂粒子1の固形分の質量を100とした場合、2以上10以下が更に好ましい。2未満の場合には、樹脂粒子1の周辺の分散剤、界面活性剤、安定剤等に起因する親水基3を分解する十分な効果が得られない。10を超えると、酸化剤6が多くなり、所望の樹脂粒子1および無機微粒子2を含ませることができず防汚機能が十分発現できない。
Claims (11)
- 水性媒体中に疎水性の樹脂粒子が分散されたコーティング組成物であって、
親水性の無機微粒子と、
過酸化物、過塩素酸、塩素酸塩、過硫酸、過リン酸、過ヨウ素酸塩の少なくともいずれかを含む酸化剤と
を備えたことを特徴とするコーティング組成物。 - 酸化剤は、過酸化水素、過酸化ナトリウム、過酸化カリウム、過酸化マグネシウム、過酸化カルシウム、過酸化バリウム、過硫酸アンモニウム、過硫酸カリウム、過塩素酸アンモニウム、過硫酸ナトリウム、過塩素酸ナトリウム、過塩素酸カリウム、塩素酸カリウム、塩素酸ナトリウム、塩素酸アンモニウム、過リン酸カルシウム、過リン酸カリウム、過ヨウ素酸ナトリウム、過ヨウ素酸カリウム、過ヨウ素酸マグネシウム、過酸化ハロゲンベンゾイル、過酸化ラウロイル、過酸化アセチル、過酸化ジブチル、クメンヒドロぺルオキシド、ブチルヒドロぺルオキシド、ペルオキソ一炭酸塩、過酢酸ナトリウム、過酢酸カリウム、メタクロロ過安息香酸、過安息香酸tert-ブチル、過カルボン酸の少なくともいずれかを含むことを特徴とする請求項1に記載のコーティング組成物。
- 酸化剤は、水溶性であり、樹脂粒子の固形分の質量を100とした場合の割合は、0.1以上30以下であることを特徴とする請求項1に記載のコーティング組成物。
- 樹脂粒子は、平均粒径が50nm以上500nm以下のフッ素樹脂粒子であることを特徴とする請求項1に記載のコーティング組成物。
- 無機微粒子は平均粒径が15nm以下であり、
樹脂粒子は平均粒径50nm以上500nm以下であって、無機微粒子と樹脂粒子との質量比が20:80~95:5であることを特徴とする請求項1記載のコーティング組成物。 - 水性媒体中に、親水性の無機微粒子と疎水性の樹脂粒子とが分散された第1剤を準備する工程と、
前記第1剤に、過酸化物、過塩素酸、塩素酸塩、過硫酸、過リン酸、過ヨウ素酸塩の少なくともいずれかを含む酸化剤を添加して、第2剤を準備する工程と、
前記第2剤を、被コーティング部材に塗布する工程と、
前記被コーティング部材上の前記第2剤を乾燥させる工程とを
を備えたことを特徴とするコーティング方法。 - 水性媒体中に、親水性の無機微粒子と疎水性の樹脂粒子とが分散され、さらに過酸化物、過塩素酸、塩素酸塩、過硫酸、過リン酸、過ヨウ素酸塩の少なくともいずれかを含む酸化剤が添加されたコーティング組成物を準備する工程と、
前記コーティング組成物を、被コーティング部材に塗布する工程と、
前記被コーティング部材上の前記コーティング組成物を加熱する工程とを
を備えたことを特徴とするコーティング方法。 - 水性媒体、および
上記水性媒体に分散された、
酢酸ビニル、アクリル樹脂、フェノール樹脂、シリコーン変性アクリル樹脂、塩化ビニリデン樹脂、塩化ビニル樹脂、エポキシ樹脂、ウレタン樹脂、アクリルウレタン樹脂、シリコーン樹脂、フッ素樹脂、ポリエステル樹脂、ポリオレフィン樹脂の少なくともいずれかを含む疎水性の樹脂粒子と、
珪素、マグネシウム、アルミニウム、チタン、セリウム、錫、亜鉛、ゲルマニウム、インジウム、アンチモンからなる金属の微粒子、上記金属の酸化物微粒子、および上記金属の窒化物微粒子の少なくともいずれかを含む親水性の無機微粒子と、
過酸化物、過塩素酸、塩素酸塩、過硫酸、過リン酸、過ヨウ素酸塩の少なくともいずれかを含む酸化剤と
を備えたことを特徴とするコーティング組成物。 - 気体を取り込む取込口と、上記取込口から取り込んだ気体の熱を交換する熱交換器と、上記熱交換器により熱交換された気体を循環させるファンと、上記ファンにより運ばれた気体の通り道を形成する風路形成部材と、上記風路形成部材により招かれた気体を導くベーンおよびフラップと、上記熱交換器、ファンを内蔵するカバーとを備え、
上記熱交換器、ファン、ベーン、フラップ、風路形成部材、カバーの少なくともいずれかの表面には、接着強化層を介して、
平均粒径50nm以上500nm以下の樹脂粒子と、
平均粒径が15nm以下の無機微粒子と、
過酸化物、過塩素酸、塩素酸塩、過硫酸、過リン酸、過ヨウ素酸塩の少なくともいずれかを含む酸化剤の反応生成物と
を有するコーティング膜を具備することを特徴とする空気調和機。 - 吸気口と、上記吸気口から取り込んだ気体の通路に配置された羽根体と、上記羽根体を回転させるモータと、上記モータにより回転された上記羽根体で形成された気体の流れにより上記気体を排気する排気口と、上記排気口および上記吸気口に連結され、上記羽根体を内蔵する筐体とを備えた換気扇であって、
上記吸気口、羽根体、モータ、排気口、筐体の少なくともいずれかの表面には、接着強化層を介して、
平均粒径50nm以上500nm以下の樹脂粒子と、
平均粒径が15nm以下の無機微粒子と、
過酸化物、過塩素酸、塩素酸塩、過硫酸、過リン酸、過ヨウ素酸塩の少なくともいずれかを含む酸化剤の反応生成物と
を有するコーティング膜を具備することを特徴とする換気扇。 - 接着強化層を介して、
平均粒径50nm以上500nm以下の樹脂粒子と、
平均粒径が15nm以下の無機微粒子と、
過酸化物、過塩素酸、塩素酸塩、過硫酸、過リン酸、過ヨウ素酸塩の少なくともいずれかを含む酸化剤の反応生成物と
を有するコーティング膜を具備することを特徴とする電気機器。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/254,511 US9481802B2 (en) | 2009-03-19 | 2010-03-10 | Coating composition, coating method, air conditioner, ventilation fan, and electrical equipment |
CN201080012354.8A CN102356134B (zh) | 2009-03-19 | 2010-03-10 | 涂覆组合物、涂覆方法、空调机、通风风扇及电气设备 |
JP2011504735A JP5456021B2 (ja) | 2009-03-19 | 2010-03-10 | コーティング組成物、コーティング方法、空気調和機、換気扇、および電気機器 |
EP10753259.0A EP2410029B1 (en) | 2009-03-19 | 2010-03-10 | Coating composition, coating process, air conditioner, ventilating fan, and electrical equipment |
ES10753259.0T ES2474607T3 (es) | 2009-03-19 | 2010-03-10 | Composición de revestimiento, método de revestimiento, acondicionador de aire, ventilador, y equipamiento eléctrico |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JPPCT/JP2009/001245 | 2009-03-19 | ||
PCT/JP2009/001245 WO2010106581A1 (ja) | 2009-03-19 | 2009-03-19 | コーティング組成物およびそのコーティング方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010106762A1 true WO2010106762A1 (ja) | 2010-09-23 |
Family
ID=42739258
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/001245 WO2010106581A1 (ja) | 2009-03-19 | 2009-03-19 | コーティング組成物およびそのコーティング方法 |
PCT/JP2010/001692 WO2010106762A1 (ja) | 2009-03-19 | 2010-03-10 | コーティング組成物、コーティング方法、空気調和機、換気扇、および電気機器 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/001245 WO2010106581A1 (ja) | 2009-03-19 | 2009-03-19 | コーティング組成物およびそのコーティング方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9481802B2 (ja) |
EP (1) | EP2410029B1 (ja) |
CN (1) | CN102356134B (ja) |
ES (1) | ES2474607T3 (ja) |
WO (2) | WO2010106581A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012076821A (ja) * | 2010-10-06 | 2012-04-19 | Showa Denko Packaging Co Ltd | 内容物付着防止蓋材およびその製造方法 |
JP2012187529A (ja) * | 2011-03-11 | 2012-10-04 | Mitsubishi Electric Corp | 撥水性部材及びその製造方法、並びに空調機室外機 |
CN106280749A (zh) * | 2016-08-31 | 2017-01-04 | 贵州卓霖节能环保科技发展有限公司 | 保温隔热水性氟碳涂料及其制备方法 |
KR20170027148A (ko) * | 2015-09-01 | 2017-03-09 | 삼성전자주식회사 | 공기조화장치에 사용되는 부품 및 이를 구비한 공기조화장치 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105566953B (zh) * | 2014-10-29 | 2018-10-02 | 三菱电机株式会社 | 涂覆组合物、防污性部件、空气调节器及换气扇 |
US10793748B2 (en) * | 2015-05-14 | 2020-10-06 | Mitsubishi Electric Corporation | Coating composition, method for producing same, coating film, exhaust fan and air conditioner |
CN110300781B (zh) * | 2017-02-21 | 2021-08-27 | 三菱电机株式会社 | 涂布组合物、涂膜及具有其的空调机 |
US20200278136A1 (en) * | 2019-02-28 | 2020-09-03 | Whirlpool Corporation | Hydrophobic Coating on Evaporator to Enhance Food Preservation |
CN115298575A (zh) * | 2020-04-08 | 2022-11-04 | 三菱电机株式会社 | 涂布组合物、涂膜、物品、光学设备、照明设备、空调及涂膜的制造方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997045502A1 (fr) * | 1996-05-31 | 1997-12-04 | Toto Ltd. | Element anti-encrassement et composition pour revetement anti-encrassement |
JPH1192689A (ja) * | 1997-09-25 | 1999-04-06 | Tao:Kk | 無機コーティング剤 |
JP2002336768A (ja) * | 2001-05-11 | 2002-11-26 | Inax Corp | 防汚塗膜の形成方法 |
JP2003181299A (ja) * | 2001-12-21 | 2003-07-02 | Jfe Steel Kk | 光触媒体の製造方法 |
JP2004051725A (ja) * | 2002-07-18 | 2004-02-19 | Nippon Parkerizing Co Ltd | 塗料組成物、塗膜形成方法、及び塗膜を有する材料 |
JP2004323700A (ja) * | 2003-04-25 | 2004-11-18 | Bridgestone Corp | 光触媒コーティング剤 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51101077A (ja) * | 1975-03-04 | 1976-09-07 | Konishiroku Photo Ind | |
WO1995017477A1 (fr) * | 1993-12-22 | 1995-06-29 | Dupont-Mitsui Fluorochemicals Co., Ltd. | Article dote d'une surface en fluororesine hydrophobe et procede de production dudit article |
JPH10132483A (ja) | 1996-10-29 | 1998-05-22 | Toto Ltd | 水滴付着防止性を有する熱交換器用フィン、及びそれを備えた熱交換器 |
US6337129B1 (en) | 1997-06-02 | 2002-01-08 | Toto Ltd. | Antifouling member and antifouling coating composition |
JP3387392B2 (ja) * | 1997-10-24 | 2003-03-17 | ダイキン工業株式会社 | 含フッ素系重合体水性分散組成物 |
ATE505496T1 (de) * | 2001-03-02 | 2011-04-15 | Nissan Chemical Ind Ltd | Verfahren zur herstellung von kugelförmigen verbundteilchen mit gehärtetem melaminharz |
US7008979B2 (en) * | 2002-04-30 | 2006-03-07 | Hydromer, Inc. | Coating composition for multiple hydrophilic applications |
WO2003102091A1 (fr) * | 2002-05-30 | 2003-12-11 | Toto Ltd. | Materiau de revetement photocatalytique, materiau composite catalytique et procede de production correspondant. compositions de revetement aqueuses autonettoyantes et element autonettoyant |
TR200600501T2 (tr) * | 2003-06-24 | 2006-08-21 | Ppg Industries Ohio, Inc. | Nano parçacıklı bir fazı olan mikro parçacıklarınsulu dispersiyonları ve bunları içeren kaplama bileşimleri. |
ES2395161T3 (es) | 2007-01-18 | 2013-02-08 | Mitsubishi Electric Corporation | Composición de revistimiento, método de revestimiento, intercabiador de calor y acondicionador de aire |
JP4698721B2 (ja) * | 2008-10-17 | 2011-06-08 | 三菱電機株式会社 | 空気調和機及びコーティング組成物 |
WO2010105938A1 (en) * | 2009-03-18 | 2010-09-23 | Basf Se | Modified silica particles and dirt repellent polymer compositions comprising them |
-
2009
- 2009-03-19 WO PCT/JP2009/001245 patent/WO2010106581A1/ja active Application Filing
-
2010
- 2010-03-10 EP EP10753259.0A patent/EP2410029B1/en active Active
- 2010-03-10 CN CN201080012354.8A patent/CN102356134B/zh active Active
- 2010-03-10 WO PCT/JP2010/001692 patent/WO2010106762A1/ja active Application Filing
- 2010-03-10 ES ES10753259.0T patent/ES2474607T3/es active Active
- 2010-03-10 US US13/254,511 patent/US9481802B2/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997045502A1 (fr) * | 1996-05-31 | 1997-12-04 | Toto Ltd. | Element anti-encrassement et composition pour revetement anti-encrassement |
JP2001088247A (ja) | 1996-05-31 | 2001-04-03 | Toto Ltd | 防汚性部材および防汚性コーティング組成物 |
JPH1192689A (ja) * | 1997-09-25 | 1999-04-06 | Tao:Kk | 無機コーティング剤 |
JP2002336768A (ja) * | 2001-05-11 | 2002-11-26 | Inax Corp | 防汚塗膜の形成方法 |
JP2003181299A (ja) * | 2001-12-21 | 2003-07-02 | Jfe Steel Kk | 光触媒体の製造方法 |
JP2004051725A (ja) * | 2002-07-18 | 2004-02-19 | Nippon Parkerizing Co Ltd | 塗料組成物、塗膜形成方法、及び塗膜を有する材料 |
JP2004323700A (ja) * | 2003-04-25 | 2004-11-18 | Bridgestone Corp | 光触媒コーティング剤 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2410029A4 |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012076821A (ja) * | 2010-10-06 | 2012-04-19 | Showa Denko Packaging Co Ltd | 内容物付着防止蓋材およびその製造方法 |
JP2012187529A (ja) * | 2011-03-11 | 2012-10-04 | Mitsubishi Electric Corp | 撥水性部材及びその製造方法、並びに空調機室外機 |
KR20170027148A (ko) * | 2015-09-01 | 2017-03-09 | 삼성전자주식회사 | 공기조화장치에 사용되는 부품 및 이를 구비한 공기조화장치 |
KR102443092B1 (ko) | 2015-09-01 | 2022-09-14 | 삼성전자주식회사 | 공기조화장치에 사용되는 부품 및 이를 구비한 공기조화장치 |
US11703243B2 (en) | 2015-09-01 | 2023-07-18 | Samsung Electronics Co., Ltd. | Component used in air conditioner and air conditioner having same |
CN106280749A (zh) * | 2016-08-31 | 2017-01-04 | 贵州卓霖节能环保科技发展有限公司 | 保温隔热水性氟碳涂料及其制备方法 |
CN106280749B (zh) * | 2016-08-31 | 2019-04-30 | 贵州卓霖节能环保科技发展有限公司 | 保温隔热水性氟碳涂料及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
US9481802B2 (en) | 2016-11-01 |
US20110315360A1 (en) | 2011-12-29 |
CN102356134A (zh) | 2012-02-15 |
CN102356134B (zh) | 2014-04-16 |
EP2410029A1 (en) | 2012-01-25 |
EP2410029A4 (en) | 2012-08-22 |
WO2010106581A1 (ja) | 2010-09-23 |
EP2410029B1 (en) | 2014-06-04 |
ES2474607T3 (es) | 2014-07-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2010106762A1 (ja) | コーティング組成物、コーティング方法、空気調和機、換気扇、および電気機器 | |
JP4698721B2 (ja) | 空気調和機及びコーティング組成物 | |
JP6465967B2 (ja) | コーティング組成物、その製造方法、コーティング膜、換気扇及び空気調和機 | |
JP5202467B2 (ja) | 送風装置 | |
JP5254042B2 (ja) | コーティング組成物及びその製造方法、熱交換器、並びに空気調和機 | |
JP6084760B2 (ja) | 自己洗浄性部材の製造方法 | |
JP2015209493A (ja) | 撥水性部材及びその製造方法、空気調和機の室外機、並びに換気扇 | |
JP5677144B2 (ja) | 撥水性部材及びその製造方法、並びに空調機室外機 | |
JP5436480B2 (ja) | 撥水膜形成用コーティング組成物及びその製造方法、並びに撥水性部材 | |
JP2009235338A (ja) | コーティング組成物、熱交換器、空気調和機 | |
JP5036675B2 (ja) | フィルタ及び空気調和機 | |
JP6381483B2 (ja) | コーティング組成物、防汚性部材、空気調和機及び換気扇 | |
JP2009229040A (ja) | 熱交換器および熱交換器の製造方法 | |
JP2011208937A (ja) | 空気調和機及びコーティング組成物 | |
JP5888711B2 (ja) | コーティング組成物及びその製造方法、並びに撥水性部材及び換気扇の製造方法 | |
JP5456021B2 (ja) | コーティング組成物、コーティング方法、空気調和機、換気扇、および電気機器 | |
JP2017061626A (ja) | コーティング組成物、コーティング膜、電気機器、空気調和機、コーティング方法および空気調和機の製造方法 | |
JP2015155512A (ja) | コーティング組成物及びその製造方法、並びに撥水性部材及び換気扇 | |
JP5306311B2 (ja) | コーティング方法及びコーティング物品 | |
JP2012116037A (ja) | 防汚性部材及びその製造方法 | |
JP7055051B2 (ja) | 積層体塗膜 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201080012354.8 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10753259 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2011504735 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13254511 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010753259 Country of ref document: EP |