WO2004002894A1 - 日射遮蔽用アンチモン錫酸化物微粒子とこれを用いた日射遮蔽体形成用分散液および日射遮蔽体並びに日射遮蔽用透明基材 - Google Patents
日射遮蔽用アンチモン錫酸化物微粒子とこれを用いた日射遮蔽体形成用分散液および日射遮蔽体並びに日射遮蔽用透明基材 Download PDFInfo
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- WO2004002894A1 WO2004002894A1 PCT/JP2003/008359 JP0308359W WO2004002894A1 WO 2004002894 A1 WO2004002894 A1 WO 2004002894A1 JP 0308359 W JP0308359 W JP 0308359W WO 2004002894 A1 WO2004002894 A1 WO 2004002894A1
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- solar shading
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
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- C01G19/00—Compounds of tin
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- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/0096—Compounds of antimony
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/32—Radiation-absorbing paints
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- 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
- C09D7/48—Stabilisers against degradation by oxygen, light or heat
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- 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
- C09D7/68—Particle size between 100-1000 nm
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- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
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- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
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- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
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- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- 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
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- 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
- Y10T428/256—Heavy metal or aluminum or compound thereof
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- 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
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
Definitions
- Antimony tin oxide fine particles for solar shading dispersion liquid for forming solar shading body using the same, solar shading body, and transparent substrate for solar shading
- the present invention relates to glass, plastics, and other solar shading functions having a solar shading function used for windows, telephone boxes, show windows, lighting lamps, transparent cases, etc. of vehicles, buildings, offices, general houses and the like. That is formed on, or kneaded into, a transparent base material, a dispersion for forming a solar shield for forming the solar shield, and antimony tin oxide as a raw material for these Matter particles.
- a transparent base material a dispersion for forming a solar shield for forming the solar shield
- antimony tin oxide as a raw material for these Matter particles.
- a material that reflects infrared rays that greatly contribute to the thermal effect is contained on the surface of a transparent substrate such as glass.
- a heat-reflective transparent base material is formed by forming a film to be formed, and this heat-reflective transparent base material is used.
- the material contains a large amount of metal oxides such as FeO x, Co ⁇ x, Cr O x, and Ti O x, and a large amount of free electrons such as Ag, Au, Cu, Ni, and A 1.
- Metallic materials that have been used have been used.
- these materials have the property of simultaneously reflecting or absorbing visible light in addition to infrared light, which greatly contributes to the thermal effect, so that the visible light transmittance is reduced.
- transparent substrates such as glass used for window materials such as building materials, vehicles, and telephone boxes require high transmittance in the visible light region. Non It must always be thin. Therefore, when the above materials are deposited on a transparent substrate, they are deposited on a 1 O nm-level thin film by spray baking, CVD, or physical deposition such as sputtering or vacuum deposition. It has usually been used.
- a solar shading body exhibiting a high visible light transmittance and a high solar shading rate on or in a transparent substrate.
- a solar shielding body used for a window material or the like is required to have properties such as less fogging of the film.
- the haze of this film is evaluated by a numerical value called a haze value.
- the haze value is defined as the ratio of diffuse transmitted light to total transmittance, and the higher the value, the more it looks cloudy to the human eye. Therefore, low haze of less than 1% is required for window materials that require transparency.
- antimony tin oxide (hereinafter abbreviated as ATO) is known as one of the materials having the visible light transmitting function and the solar shading function.
- ATO antimony tin oxide
- Patent Document 1 Patent Document 2, Patent Document 3, Patent Document 4
- Patent Document 4 The ATOs described in each publication are all related to conductivity.
- Patent Document 1 Patent No. 2 844 011
- Patent Document 2 Japanese Patent Application Laid-Open No. H11-1287826
- Patent Document 3 Japanese Patent Application Laid-Open No. Hei 6-183807
- Patent Literature 4 Japanese Patent Application Laid-Open No. 5-247067
- the present invention provides a high haze while having a high visible light transmittance and a low solar transmittance when formed on a transparent substrate or kneaded into the substrate to form a plate, sheet, film or the like.
- the physical properties of AT0 that can form a solar shading body with low optical properties are clarified, and ATO fine particles having these physical properties and the ATO fine particles are contained, and a simple coating method and kneading method are used.
- An object of the present invention is to provide a solar shading body forming dispersion liquid capable of forming a solar shading body by using the above, and a solar shading body containing ATO having the physical characteristics. Disclosure of the invention
- the present inventors have found that when formed on a transparent substrate or kneaded into the substrate and molded into a plate, sheet, film, or the like, a high visible light transmittance and The requirements to be met by AT 0 that can form a solar radiation shield having an optical characteristic of a low haze value while having a low solar radiation transmittance were examined and examined.
- the ATO fine particles contained in the solar shading block the visible light and the incident light through the effect of interference with the incident light, the effect of absorbing and emitting light due to the electronic state of the powder particles, and the like. Interacts with infrared light, causing optical phenomena such as transmission, absorption, and reflection. Furthermore, with regard to composite oxide fine particles such as ATO fine particles, fine particles having various physical properties in the surface state and electronic state of the fine particles can be prepared depending on the conditions at the time of production. Based on these ideas, we conducted research on the relationship between ATO fine particles having various physical properties and the solar shading function.
- the solar radiation shield containing particles has a maximum transmittance in the visible light region and a strong plasma absorption in the near-infrared region close to the visible light region, has a minimum transmittance, and has an extremely low haze value.
- the present invention has been completed.
- the first invention of the present invention relates to antimony tin oxide fine particles for solar shading
- Antimony tin oxide fine particles for solar shading wherein the diameter of crystallites constituting the fine particles is 4 to 125 nm, and the specific surface area of the fine particles is 5 to 110 mV g. is there.
- the haze value is low while having a high visible light transmittance and a low solar transmittance.
- a solar shading body having optical characteristics can be formed.
- a second invention is the antimony tin oxide fine particles for solar shading according to the first invention
- L * of the powder color is 45 to 65, a * is ⁇ 51, and b * is ⁇ 111.
- Antimony tin oxide fine particles for shielding sunlight is 45 to 65, a * is ⁇ 51, and b * is ⁇ 111.
- the antimony tin oxide fine particles for solar shading having the powder color on a transparent substrate or in a substrate by an appropriate method, while having a high visible light transmittance and a low solar transmittance, It is possible to form a solar shading body having optical characteristics such as a low haze value.
- a third invention is a dispersion for forming a solar shading body obtained by dispersing the antimony tin oxide fine particles for solar shading according to the first or second invention in a solvent, wherein the antimony tin oxide fine particles for solar shading are provided.
- the dispersed particle diameter in the solvent is 13 O nm or less. It is a liquid.
- the haze value is increased while having a high visible light transmittance and a low solar transmittance. It is possible to form a solar radiation shield having low optical characteristics. .
- a fourth invention is the dispersion for forming a solar radiation shield according to the third invention, wherein the dispersion contains an inorganic binder and Z or a resin binder as a binder. It is.
- the adhesion of the ATO fine particles according to the present invention to the transparent substrate can be improved, and the hardness of the solar radiation shield can be further improved.
- a fifth invention is a solar shading body formed using the solar shading body forming dispersion liquid according to the third or fourth invention.
- This solar radiation shield has excellent optical characteristics such as low haze value while having high visible light transmittance and low solar transmittance.
- a film of silicon oxide, zirconium oxide, titanium oxide, or aluminum oxide is formed on the solar shading body according to the fifth aspect of the invention.
- This is a solar radiation shield characterized in that:
- the binding strength of the solar shading body to the transparent substrate is improved, and the solar shading is improved.
- the hardness and weather resistance of the shield can be improved.
- a seventh invention is the solar radiation shield according to the fifth or sixth invention, wherein the solar radiation transmittance in a wavelength range of 300 to 210 nm when the visible light transmittance is 70% or more.
- a solar radiation shield characterized by having a haze value of less than 60% and a haze value of less than 1%. Practical when the solar radiation shield has a visible light transmittance of 70% or more, a solar transmittance of less than 60% in a wavelength range of 300 to 210 nm, and a haze value of less than 1%.
- a solar shading body that exhibits sufficient transparency and a solar shading effect.
- An eighth invention is a transparent substrate for solar shading, wherein the solar shading body according to any one of the fifth to seventh inventions is formed.
- Fig. 1 is a list of crystallite size, specific surface area, dispersed particle size, powder color, and optical characteristics of the solar shading sample of the ATO sample.
- FIG. 2 is an example of the flow of manufacturing an ATO sample. BEST MODE FOR CARRYING OUT THE INVENTION
- the present inventors considered a mechanism at the crystal level at which AT ⁇ particles exert the solar shading effect, and further studied a specific method for realizing a preferable solar shading effect based on the mechanism. The outline is explained.
- n the conduction electron density
- q the charge of the electron
- ⁇ the permittivity
- m the effective mass of the electron.
- Conduction electrons density is 1 0 / cm 3 units in metal, because of the 1 0 2 ⁇ ⁇ cm 3 units in AT 0, is high already reflectance metal in a visible light region, AT O may cause transmission of visible light
- the reflectance increases from the near infrared region, it can be used as a solar radiation shield.
- the present inventors control the conduction electron density n and the dielectric constant ⁇ in the equation (1) by controlling the crystallite diameter and the specific surface area of the ATO fine particles, so that the plasma frequency of the fine particles We thought that it would be possible to set ⁇ ⁇ to a desired range.
- the total shielding cross-sectional area A of a constant weight M of ATO when the particle size of AT ⁇ fine particles is r and the specific gravity is p is It is expressed by equation (2).
- the crystallite diameter of the ATO fine particles is 4 to 125 nm, preferably 5 to 80 nm, more preferably 6 to 60 nm, and the specific surface area of the ATO fine particles is 5 to 110 nm.
- mVg preferably between 10 and 90 mVg, more preferably between 20 and 70 mVg.
- a solar radiation shield formed using a dispersion liquid having a dispersion particle diameter of 13 O nm or less when the ATO fine particles were dispersed in a solvent exhibited desirable optical characteristics. That is, when the ATO fine particles have a crystallite diameter and specific surface area in this range, and the dispersed particle diameter in a solvent is 13 O nm or less, a solar radiation shield formed from a dispersion containing these ATOs Has a high transmissivity in the visible light region, exhibits strong plasma absorption in the near-infrared region near the visible light region, exhibits a low solar radiation transmittance, and has an excellent effect of extremely low haze value. It is thought that it is doing.
- an ATO sample according to the present invention there are various methods for producing an ATO sample according to the present invention, including a method in which an alcohol solution and an alkali solution of an antimony compound are dropped in parallel to an aqueous solution of a tin compound, and a method in which S n (0 C 4 H 9 ) 4 and S b ( ⁇ C 4 H 9 ) 3 to an n-butanol solution, add about 1.1 times the theoretical amount of water required for the hydrolysis of these compounds and an acid such as nitric acid or hydrochloric acid, After hydrolyzing S n (0 C 4 H 9 ) 4 and S b (OC 4 H 9 ) 3 , the resulting precipitate is dried and sintered.
- the antimony compound was added to the aqueous solution of the tin compound described above.
- a method of concurrently dropping an alcohol solution and an alcohol solution will be described with reference to FIG. 2 showing a production flow.
- tin compound solution 1 prepares antimony compound alcohol solution 2 by dissolving antimony chloride in alcohol, and further use an alkaline aqueous solution used as a precipitant.
- Prepare 3 various types of alcohols such as methanol and ethanol can be applied, and aqueous solutions of ammonium carbonate, ammonia water, sodium hydroxide, potassium hydroxide, etc. can be applied as the alkaline aqueous solution 3, but in particular, Ammonia bicarbonate ammonia water is preferred.
- the antimony compound alcohol solution 2 and the alkaline aqueous solution 3 are simultaneously dropped 4 into the tin compound solution 1.
- the antimony compound alcohol solution 2 is preferably dropped so that the antimony content is 1 to 20% by weight with respect to tin in terms of element.
- the amount of the alkaline aqueous solution 3 to be added may be at least the chemical equivalent required for the tin chloride and the antimony chloride to form a hydroxide, and more preferably in the range of equivalent to 1.5 times. is there.
- the parallel dropping time of the antimony compound alcohol solution 2 and the alkali solution 3 is set to be within 60 minutes, preferably within 30 minutes, from the viewpoint of productivity.
- the stirring of the aqueous solution is continued after the completion of the parallel dropping to keep the inside of the system uniform, but the temperature of the aqueous solution at that time is the same as the temperature during the parallel dropping, and is 50 ° C or less. Is preferred.
- the duration of stirring is not particularly limited, but is 30 minutes or less, preferably 15 minutes or less from the viewpoint of productivity.
- the co-precipitate is formed 5 by the parallel dripping 4, and the co-precipitate is collected and washed sufficiently by repeatedly performing decantation 6, particularly so that the residual chloride ion is 0.15 wt% or less. After that, it is dried.
- the residual chlorine ion as a pure substance is 0.15% by weight or less, the desired optical characteristics can be obtained without disturbing the solid solution of antimony in the subsequent firing step. is there.
- the drying temperature and time are not particularly limited.
- the dried coprecipitate is calcined at 500 ° C. to 100 ° C. for 30 minutes to 5 hours under an air atmosphere to produce ATO 9.
- the crystallite diameter ⁇ ⁇ specific surface area of the ATO fine particles can be controlled.
- the crystallite diameter increases as the firing temperature increases and the firing time increases, and the specific surface area decreases as the firing temperature increases, but the firing temperature is lower than 500 to 110 ° C.
- AT ⁇ fine particles having a preferable crystallite diameter and specific surface area can be obtained.
- the ATO fine particles are formed on the solar shading body by an appropriate method or kneaded into the solar shading body to form a plate, a sheet, a film, or the like.
- the dispersion for forming a solar radiation shield according to the present invention is obtained by dispersing the above-mentioned ATO fine particles in a solvent.
- the dispersed particle diameter is desirably 130 nm or less. If the particle size is larger than 130 nm, desired optical characteristics cannot be obtained. In particular, when the number of aggregated coarse particles increases, haze increases as a light scattering source, which may cause a decrease in visible light transmittance, which is not preferable.
- the dispersed particle size means the aggregated particle size of the ATO fine particles in the solvent, which can be measured by various commercially available particle size distribution meters.
- sampling can be performed from a dispersion in which ATO fine particles are dispersed in a solvent, and measurement can be performed using ESL-800 manufactured by Otsuka Electronics Co., Ltd. based on the dynamic light scattering method. .
- the solvent is not particularly limited. What is necessary is just to select suitably according to a crowded environment. Further, when an inorganic binder and / or a resin binder described later is contained in the solar shading body forming dispersion, it may be appropriately selected according to the binder.
- alcohols such as water, ethanol, propanol, butanol, isopropyl alcohol, isobutyl alcohol, diacetone alcohol, ethers such as methyl ether, ethyl ether, and propyl ether, esters, acetone, methyl ethyl ketone, and getyl ketone
- organic solvents such as ketones such as cyclohexanone and isobutyl ketone can be used, and the pH may be adjusted by adding an acid or an alkali as needed.
- addition of various surfactants and coupling agents is also a preferable configuration.
- the haze value is low while having a high visible light transmittance and a low solar transmittance.
- a solar shading film having such optical characteristics can be formed.
- the type of inorganic binder or resin binder to be contained in the dispersion for forming a solar shading body is not particularly limited.
- the inorganic binder include metal alkoxides of silicon, zirconium, titanium, or aluminum, and partial hydration thereof. Degradation polycondensation products or organosilazanes can be used.
- the resin binder a thermoplastic resin such as an acrylic resin and a thermosetting resin such as an epoxy resin can be used.
- the method of dispersing the ATO fine particles and the binder is not particularly limited as long as they can be uniformly dispersed without agglomeration in a dispersion liquid, and examples thereof include a bead mill, a pole mill, a sand mill, a paint shaker, and an ultrasonic homogenizer.
- the method using the above device can be preferably applied.
- the conductive path can be partially cut by adjusting the amount of a surfactant or a coupling agent, for example. it is possible to control the surface resistance value of the shield over 1 0 6 ⁇ / mouth.
- the surface resistance value approximately more than 1 0 6 ⁇ / mouth, it is possible to suppress the reflection for an electric wave of the solar radiation-shielding body, for example, building the solar radiation-shielding body was placed a transparent substrate formed It can avoid such problems as internal and external reflections of mobile phones, TVs, radios, and other radio waves, making them unreceivable and causing radio interference.
- a method of adding an inorganic binder or a resin binder to a dispersion for forming a solar shading body and adjusting the content thereof can be adopted.
- the method of adding the inorganic binder or the resin binder is to improve the adhesion of the AT0 fine particles deposited and formed on the substrate at a high density to the base material after the dispersion liquid is cured, and to further harden the film.
- the effect of improving the degree is also preferable.
- a film obtained when no resin binder or inorganic binder is added to the dispersion has a film structure in which only the ATO fine particles are deposited on a substrate.
- the film on which only the ATO fine particles are deposited shows the solar shading effect as it is.
- the solar shading body has excellent optical properties such as low visible light transmittance and low haze value while having high visible light transmittance.
- a coating made of a metal alkoxide of silicon, zirconium, titanium, or aluminum, or a partially hydrolyzed polycondensate thereof is further applied to the solar shading body thus obtained as a second layer,
- a coating made of a metal alkoxide of silicon, zirconium, titanium, or aluminum, or a partially hydrolyzed polycondensate thereof is further applied to the solar shading body thus obtained as a second layer.
- the above-mentioned solar radiation shield on which only the ATO fine particles are deposited further contains an inorganic binder and / or a resin binder such as a metal alkoxide of silicon, zirconium, titanium, or aluminum or a partially hydrolyzed polycondensate thereof. It is preferable to apply a coating solution to form a film to form a multilayer film.
- the dispersion component is formed by filling the gaps where the ATO fine particles of the first layer are deposited, so that the haze value of the solar shading body is further reduced and the visible light transmittance is reduced. This is because the bonding property of the particles to the base material is improved.
- a method of binding a metal alkoxide of silicon, zirconium, titanium, or aluminum to a film of ATO fine particles alone or a film mainly composed of ATO fine particles or a partially hydrolyzed polycondensate of these metal forms is used.
- the coating method is effective from the viewpoint of the easiness of the process and the cost.
- the coating solution used in the coating method contains one or more of partially hydrolyzed polycondensates of metal alkoxides of silicon, zirconium, titanium, and aluminum in water or alcohol. Its content is preferably not more than 40% by weight in the total solution in terms of oxide obtained after heating. Further, it is possible to adjust the pH by adding an acid or an alkali, if necessary.
- Such a dispersion is applied as a second layer to a solar radiation shield containing ATO fine particles as a main component, and further heated to easily form an oxide film of silicon, zirconium, titanium, aluminum, or the like. It can be made.
- an organosilazane solution may be used as a binder component used in the dispersion of the present invention or as a coating solution for overcoating.
- the method for applying the dispersion liquid for forming a solar radiation shield and the coating liquid for overcoating to the substrate according to the present invention is not particularly limited. For example, spin coating, bar coating, spray coating, dip coating, screen printing, roll coating, flow coating, etc. Any method may be used as long as it can be applied.
- the base material is kneaded with a resin
- a known method may be appropriately selected as long as the ATO fine particles are uniformly dispersed in the resin.
- the resin can be melt-mixed at a temperature near the melting point of the resin, then pelletized, and formed into various shapes by known methods.
- the resin include PET resin, acrylic resin, polyamide resin, vinyl chloride resin, polycarbonate resin, olefin resin, epoxy resin, polyimide resin, and fluorine resin.
- the dispersion for forming a solar radiation shield or the coating solution for overcoating contains, as an inorganic binder, a metal alkoxide of silicon, zirconium, titanium, or aluminum and a hydrolyzed polymer thereof, the dispersion liquid
- the heating temperature of the substrate after the application is preferably 100 ° C. or higher, more preferably the boiling point of the solvent in the dispersion. What is necessary is that the polymerization reaction of the alkoxide or its hydrolyzed polymer contained in the coating film can be sufficiently completed by heating at 100 ° C. or higher, and furthermore, the water or organic solvent contained in the dispersion liquid This is because it is possible to avoid remaining in the solar shading, which causes a decrease in visible light transmittance of the solar shading after heating.
- the dispersion for forming a solar shading or the coating solution for overcoating contains a resin binder, it may be cured according to each curing method.
- an ultraviolet curable resin may be appropriately irradiated with ultraviolet light, and a room temperature curable resin may be left as it is after application. For this reason, it is possible to apply it to existing window glass etc. on site.
- the ATO fine particles are dispersed, compared with a film having a mirror-like surface in which crystals such as an oxide thin film produced by a physical film forming method are densely embedded in the film, A glare-like appearance with little reflection in the visible light region can be avoided.
- AT in the solar shading Since o has a plasma frequency in the visible to near-infrared region as described above, the resulting plasma reflection increases in the near-infrared region.
- the solar radiation shield according to the present invention may be formed on a film in which ATO fine particles are dispersed, or on a surface of AT @ fine particles. , by forming the low refractive index layer such as S i ⁇ 2 M g F 2, can be obtained easily luminous reflectance of 1% or less of the multilayer film.
- fine particles such as inorganic titanium oxide, zinc oxide and cerium oxide, and organic benzophenone and benzene are added to the dispersion.
- organic benzophenone and benzene are added to the dispersion.
- triazoles may be added.
- the dispersion for forming a solar radiation shield according to the present invention does not use a decomposition or a chemical reaction of a coating component due to heat at the time of firing to form a desired solar radiation shield, so that a uniform film having stable characteristics is provided.
- a thick solar radiation shield can be formed.
- the use of the ATO fine particles according to the present invention makes it possible to produce a solar radiation shield having favorable optical characteristics.
- the AT0 fine particles are inorganic materials, Extremely high weather resistance compared to materials. Even when used, for example, in areas exposed to sunlight (ultraviolet rays), there is almost no deterioration in color or functions.
- the solar radiation shield according to the present invention formed as described above has a solar radiation transmittance of 6% for infrared light in a wavelength range of 300 to 210 nm when the visible light transmittance is 70% or more.
- a solar radiation shield that exhibits optical characteristics of less than 0% and haze value of less than 1%.
- the solar shading body exhibiting these optical properties exhibits practically sufficient transparency and a solar shading effect, and the solar shading transparent substrate formed with the solar shading body has a practically sufficient transparency and Solar shading effect Therefore, it can be suitably applied to vehicles, buildings, offices, windows of general houses, and the like.
- an aqueous tin chloride solution having a tin chloride concentration of 0.030 g / m 1 and a liquid temperature of 25 ° C, and a methanol solution of antimony chloride having an antimony chloride concentration of 0.034 g / m 1 were prepared.
- An aqueous solution of ammonium bicarbonate having an ammonium bicarbonate concentration of 0.176 g / ml was prepared.
- 150 ml of the antimony chloride methanol solution and 334 ml of the aqueous solution of ammonium hydrogencarbonate are dropped in parallel into the 500 ml of tin chloride aqueous solution.
- the dropping time was 30 minutes, and the stirring was continued for another 10 minutes with the liquid temperature kept at 25 ° C even after the completion of the dropping.
- the obtained precipitate was sufficiently washed by repeatedly performing decantation, dried, and fired in an air atmosphere to prepare AT samples a to o shown in FIG.
- the firing conditions were as follows: sample a for 1 hour at 500 ° C, sample b for 2 hours at 500 ° C, sample c for 1 hour at 600 ° C, and sample d for 1 hour at 700 ° C.
- Time Sample e is 1 hour at 800 ° C
- Sample f is 1 hour at 900 ° C
- Sample g is 30 minutes at 1000 ° C
- Sample h is 1 hour at 400 ° C.
- Sample i is 1 hour at 110 ° C
- Sample j is 2 hours at 400 ° C
- Sample k is 30 minutes at 500 ° C
- Sample 1 is 2 at 500 ° C.
- sample m is 1 hour at 700 ° C
- sample n is 1 hour at 700 ° C
- sample o is 1 hour at 700 ° C.
- the content of antimony in the samples was as follows: Samples: a to k were 10% by weight, Sample 1 was 8% by weight, Sample m was 5.7% by weight, and Sample n was 7. 5% by weight, sample o was 8.7% by weight, and the obtained AT ⁇ sample had almost a dark blue color.
- the prepared ATO samples a to o each contained 20% by weight, 70% by weight of toluene, 10% by weight of a dispersant, and 0.3 mm zirconia beads equivalent to a filling rate of 63%.
- the container was subjected to a dispersion treatment for 12 hours using a paint shaker. Next, 77.7% by weight of the dispersion, acrylic U as a binder
- V-cured resin (solid content 70%) was added to obtain 22% by weight to obtain a solar shading body forming dispersion liquid.
- the dispersion for forming a solar shading body was dispersed in a dispersion by Barco method.
- the optical characteristics of the obtained solar radiation shield samples A to 0 were measured using a spectrophotometer U-400 manufactured by Hitachi, Ltd.
- the haze value was measured using HR-200 manufactured by Murakami Color Research Laboratory.
- FIG. 1 shows the measurement results of the optical characteristics of the obtained solar shading samples A to 0.
- the solar radiation shields exhibiting excellent optical characteristics having a solar transmittance of less than 60% and a haze value of less than 1% were obtained from samples A to G and K to ⁇ . Met.
- samples C to E, L, and M exhibited even better optical characteristics with a solar transmittance of less than 56.5% and a haze value of 0.8% or less.
- the crystallite diameter of Hatcho 0 fine particles is 4 to 125] 1] 11, preferably 5 to 80 nm, more preferably 6 to 60 nm, and the specific surface area is 5
- L 10 mVg preferably 10 to 90 m 2 / g, more preferably 20 to 70 m 2 / g
- the antimony tin oxide fine particles for solar radiation shielding according to the present invention wherein the crystallites constituting the fine particles have a diameter of: to 125 nm, and a specific surface area of the fine particles. Of 5 to 11 O mVg is formed on or in a transparent substrate by an appropriate method, so that the haze value is low while having high visible light transmittance and low solar transmittance. Thus, a solar radiation shield having such optical characteristics can be formed.
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- Life Sciences & Earth Sciences (AREA)
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- Composite Materials (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
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- Surface Treatment Of Glass (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/482,296 US7247371B2 (en) | 2002-07-01 | 2003-07-01 | Antimony tin oxide fine particles for sunlight shielding, and disperse liquid for formation of sunlight shielding solid, sunlight shielding solid, and transparent substrate for sunlight shielding using thereof |
AU2003246172A AU2003246172A1 (en) | 2002-07-01 | 2003-07-01 | Fine particles of antimony tin oxide for sunscreen, dispersion thereof for sunscreen material formation, sunscreen material and transparent base material for sunscreen |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002192622 | 2002-07-01 | ||
JP2002-192622 | 2002-07-01 | ||
JP2003182524A JP4182825B2 (ja) | 2002-07-01 | 2003-06-26 | 日射遮蔽用アンチモン錫酸化物微粒子とこれを用いた日射遮蔽体形成用分散液および日射遮蔽体並びに日射遮蔽用透明基材 |
JP2003-182524 | 2003-06-26 |
Publications (1)
Publication Number | Publication Date |
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WO2004002894A1 true WO2004002894A1 (ja) | 2004-01-08 |
Family
ID=30002337
Family Applications (1)
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PCT/JP2003/008359 WO2004002894A1 (ja) | 2002-07-01 | 2003-07-01 | 日射遮蔽用アンチモン錫酸化物微粒子とこれを用いた日射遮蔽体形成用分散液および日射遮蔽体並びに日射遮蔽用透明基材 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7247371B2 (ja) |
JP (1) | JP4182825B2 (ja) |
CN (1) | CN100467386C (ja) |
AU (1) | AU2003246172A1 (ja) |
WO (1) | WO2004002894A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103641157A (zh) * | 2013-12-04 | 2014-03-19 | 西南交通大学 | 一种制备低电阻纳米粉体的方法 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
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CN1827546B (zh) * | 2006-02-16 | 2012-06-20 | 雷亚林 | 一种屏蔽红外、远红外线及导电玻璃、陶瓷膜的制备方法 |
WO2008127409A2 (en) * | 2006-11-07 | 2008-10-23 | Ppg Industries Ohio, Inc. | Infrared absorber |
JP2008230954A (ja) * | 2007-02-21 | 2008-10-02 | Sumitomo Metal Mining Co Ltd | 日射遮蔽体形成用アンチモン含有酸化錫微粒子の製造方法、日射遮蔽体形成用分散液、日射遮蔽体、および、日射遮蔽用基材 |
EP1967495B1 (en) | 2007-02-21 | 2012-08-01 | Sumitomo Metal Mining Co., Ltd. | Manufacturing method for antimony-containing tin oxide fine particles for forming solar radiation shielding body, dispersion for forming solar radiation shielding body, solar radiation sheilding body, and solar radiation shielding base material |
JP5362570B2 (ja) * | 2007-09-05 | 2013-12-11 | 株式会社東芝 | 可視光応答型光触媒粉末とそれを用いた可視光応答型の光触媒材料、光触媒塗料および光触媒製品 |
CN101821005B (zh) * | 2007-09-05 | 2012-09-26 | 株式会社东芝 | 可见光响应型光催化剂粉末及其制造方法,以及使用了该粉末的可见光响应型光催化剂材料、光催化剂涂料、光催化剂产品 |
WO2013147033A1 (ja) * | 2012-03-29 | 2013-10-03 | 三菱マテリアル株式会社 | 赤外線カット材 |
WO2013147029A1 (ja) * | 2012-03-29 | 2013-10-03 | 三菱マテリアル株式会社 | アンチモンドープ酸化錫粉末およびその製造方法 |
US20150285972A1 (en) * | 2012-10-19 | 2015-10-08 | Nippon Kayaku Kabushikikaisha | Heat-Ray-Shielding Sheet |
KR102553348B1 (ko) | 2015-09-30 | 2023-07-07 | 스미토모 긴조쿠 고잔 가부시키가이샤 | 적외선 흡수 미립자 및 이를 사용한 분산액, 분산체, 적층된 투명 기재, 필름, 유리, 및 이의 제조 방법 |
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- 2003-06-26 JP JP2003182524A patent/JP4182825B2/ja not_active Expired - Fee Related
- 2003-07-01 US US10/482,296 patent/US7247371B2/en active Active
- 2003-07-01 CN CNB038054744A patent/CN100467386C/zh not_active Expired - Fee Related
- 2003-07-01 WO PCT/JP2003/008359 patent/WO2004002894A1/ja active Application Filing
- 2003-07-01 AU AU2003246172A patent/AU2003246172A1/en not_active Abandoned
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Also Published As
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JP4182825B2 (ja) | 2008-11-19 |
US20050163999A1 (en) | 2005-07-28 |
CN1639068A (zh) | 2005-07-13 |
US7247371B2 (en) | 2007-07-24 |
JP2004083397A (ja) | 2004-03-18 |
AU2003246172A1 (en) | 2004-01-19 |
CN100467386C (zh) | 2009-03-11 |
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