WO2016021336A1 - 熱線遮蔽膜、熱線遮蔽合わせ透明基材、自動車、建造物 - Google Patents
熱線遮蔽膜、熱線遮蔽合わせ透明基材、自動車、建造物 Download PDFInfo
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- WO2016021336A1 WO2016021336A1 PCT/JP2015/068809 JP2015068809W WO2016021336A1 WO 2016021336 A1 WO2016021336 A1 WO 2016021336A1 JP 2015068809 W JP2015068809 W JP 2015068809W WO 2016021336 A1 WO2016021336 A1 WO 2016021336A1
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- Prior art keywords
- heat ray
- ray shielding
- shielding film
- tungsten oxide
- composite tungsten
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- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B2009/2417—Light path control; means to control reflection
Definitions
- the present invention relates to a heat ray shielding film, a heat ray shielding laminated transparent base material, an automobile, and a building.
- a heat ray shielding film equipped with a heat ray shielding function that blocks a part of the incident solar energy and reduces cooling load, human heat feeling, adverse effects on plants, etc., automobiles, buildings, etc. It has been demanded in applications such as window materials and greenhouse films, and various studies have been made.
- a laminated glass is reported in which it is disposed as an intermediate layer (intermediate film) between a plurality of opposed glass sheets.
- Patent Document 1 is provided with a soft resin layer containing a heat ray shielding metal oxide which is either tin oxide or indium oxide having a particle size of 0.1 ⁇ m or less between a pair of glasses. Laminated glass is disclosed.
- Patent Document 2 discloses that Sn, Ti, Si, Zn, Zr, Fe, Al, Cr, Co, Ce, In, Ni, Ag, Cu, Pt, between at least two transparent glass plates. Mn, Ta, W, V, Mo metals, oxides, nitrides, sulfides, Sb and F dope, or composites selected from two or more of these A laminated glass having an interlayer film in which functional ultrafine particles are dispersed is disclosed.
- Patent Document 3 discloses a window glass for an automobile, wherein a mixed layer of ultrafine particles having an average particle size of 0.1 ⁇ m or less and a glass component is formed between transparent plate members.
- the ultrafine particles include metal oxides such as TiO 2 , ZrO 2 , SnO 2 , and In 2 O 3 or a mixture thereof
- the glass component include organic silicon or organic silicon compounds.
- Patent Document 4 a laminated intermediate film consisting of three layers is provided between at least two transparent glass plates, and Sn, Ti, Si, Zn, Zr, Fe are provided on the second layer of the intermediate film.
- a laminated glass in which functional ultrafine particles, which are composites selected from at least two of these, are dispersed, is disclosed.
- Patent Document 5 an additive solution in which an intermediate layer having a solar radiation shielding function is interposed between two plate glasses, and the intermediate layer has hexaboride fine particles dispersed in a plasticizer (or six A solar-shielding laminated glass formed by an interlayer film made of a boride fine particle, an ITO fine particle and / or an ATO fine particle dispersed in a plasticizer) and a vinyl resin is disclosed.
- Patent Document 5 discloses that an intermediate layer having a solar radiation shielding function is interposed between two plate glasses, the intermediate layer is formed on a surface located on the inner side of at least one plate glass, and hexaboride fine particles are formed.
- a solar radiation shielding film formed by applying a coating liquid containing as a solar radiation shielding component (or a coating liquid containing hexaboride fine particles and at least one of ITO fine particles and ATO fine particles as a solar radiation shielding component);
- a solar-shielding laminated glass formed by an intermediate film containing a vinyl-based resin interposed between sheets of sheet glass is also disclosed.
- the transmittance has a maximum value between wavelengths of 400 nm and 700 nm, and the wavelength of 700 nm It has a minimum value between 1800 nm. Therefore, according to the solar shading laminated glass disclosed in Patent Document 5, even when the visible light transmittance is 77% or 78%, the solar radiation transmittance is about 50% to 60%. Compared with the conventional laminated glass disclosed in (4) to (4), the performance is greatly improved.
- the applicant of the present invention uses tungsten oxide fine particles and / or composite tungsten oxide fine particles as fine particles having solar radiation shielding function in Patent Document 6, and the fine particles having solar radiation shielding function are dispersed in a synthetic resin such as vinyl resin.
- a solar radiation shielding laminated structure is disclosed in which the intermediate layer is interposed between two laminated plates selected from sheet glass or the like.
- the solar radiation shielding laminated structure disclosed in Patent Document 6 has an example in which the solar radiation transmittance is 35.7% when the visible light transmittance is 70.0%, and the conventional structures described in Patent Documents 1 to 5 are included. Compared to the laminated glass, the performance was further improved.
- Japanese Unexamined Patent Publication No. 8-217500 Japanese Laid-Open Patent Publication No. 8-259279 Japanese Laid-Open Patent Publication No. 4-160041 Japanese Patent Laid-Open No. 10-297945 Japanese Unexamined Patent Publication No. 2001-89202 International Publication No. 2005/087680
- the intermediate layer of the solar radiation shielding laminated structure disclosed in Patent Document 6 includes composite tungsten oxide fine particles as fine particles having a solar radiation shielding function
- the intermediate layer is kept in a high-temperature and high-humidity environment for a long time.
- a decoloring phenomenon in which the color disappears from the end of the intermediate layer is observed.
- a decoloring phenomenon edge fade phenomenon
- an object of one aspect of the present invention is to provide a heat ray shielding film that suppresses the occurrence of a decoloring phenomenon.
- Composite tungsten oxide particles Containing ionomer resin
- the composite tungsten oxide particles are selected from the general formula M x WO y (where M is selected from Cs, Rb, K, Tl, In, Ba, Li, Ca, Sr, Fe, Sn, Al, Cu, Na).
- a heat ray shielding film which is a particle of a composite tungsten oxide represented by one or more elements, 0.1 ⁇ x ⁇ 0.5, 2.2 ⁇ y ⁇ 3.0).
- the heat ray shielding film of this embodiment can contain composite tungsten oxide particles and an ionomer resin.
- composite tungsten oxide particles general formula M x WO y (where M is selected from Cs, Rb, K, Tl, In, Ba, Li, Ca, Sr, Fe, Sn, Al, Cu, Na)
- M is selected from Cs, Rb, K, Tl, In, Ba, Li, Ca, Sr, Fe, Sn, Al, Cu, Na
- M is selected from Cs, Rb, K, Tl, In, Ba, Li, Ca, Sr, Fe, Sn, Al, Cu, Na
- the inventors of the present invention have intensively studied a method for suppressing a decoloring phenomenon in a heat ray shielding film (intermediate layer) containing composite tungsten oxide particles.
- the cause of decoloration of the composite tungsten oxide contained in the heat ray shielding film in a high-temperature and high-humidity environment is that doped atoms such as cesium are desorbed from the crystal structure of the composite tungsten oxide, resulting in an amorphous tungsten oxide. It is clear that this is due to changes. (See, for example, K. Adachi, et al., J. Appl. Phys. 114, 194304 (2013).) Although it is not clear why the use of an ionomer resin as the resin contained in the heat ray shielding film of the present embodiment can significantly improve the weather resistance and suppress the occurrence of the decoloring phenomenon, it contains metal ions uniformly in the structure.
- polyvinyl acetal resin and ethylene-vinyl acetate copolymer which have been conventionally used as a resin contained in the heat ray shielding film, basically contain no metal ions in the structure thereof, so that the composite tungsten oxide It is thought that the color erasing phenomenon has occurred.
- the composite tungsten oxide particles have the general formula M x WO y (where M is Cs, Rb, K, Tl, In, Ba, Li, Ca, Sr, Fe Preferably one or more elements selected from Sn, Al, Cu, Na, 0.1 ⁇ x ⁇ 0.5, 2.2 ⁇ y ⁇ 3.0). Can be used.
- W represents tungsten and O represents oxygen.
- the element M in the above formula is at least one selected from Cs, Rb, K, Tl, In, Ba, Li, Ca, Sr, Fe, Sn, Al, Cu, and Na. An element is preferable.
- the heat ray shielding film of this embodiment can suppress the transmission of light in the infrared region, particularly the near infrared region, and can exhibit the heat ray shielding ability by containing composite tungsten oxide particles. it can.
- the light absorption coefficient in the visible region is very small compared to the light absorption coefficient in the near infrared region, so even when the transmission of light in the near infrared region is sufficiently suppressed, High permeability can be maintained.
- the composite tungsten oxide is represented by M x WO y as described above, and has a composition in which the element M is added to tungsten oxide (WO y ).
- tungsten oxide also has infrared absorption characteristics.
- tungsten oxide since effective free electrons do not exist in tungsten trioxide (WO 3 ), the absorption and reflection characteristics in the near infrared region are small.
- y which is the ratio of oxygen in tungsten oxide (WO y ) to tungsten, to be less than 3
- free electrons can be generated in the tungsten oxide, and efficient infrared absorbing particles can be obtained.
- the crystal phase of WO 2 may cause absorption or scattering of light in the visible region, and may reduce absorption of light in the near infrared region.
- the so-called “Magneli phase” having a composition ratio represented by 2.45 ⁇ y ⁇ 3.0 is chemically stable, and absorbs light in the near infrared region. Therefore, it can be more preferably used as infrared absorbing particles.
- the composite tungsten oxide used in the heat ray shielding film of this embodiment by adding the element M to the tungsten oxide, free electrons are generated in the composite tungsten oxide and free in the near infrared region. Stronger absorption characteristics derived from electrons appear. For this reason, it exhibits particularly high characteristics as an infrared absorbing material that absorbs near infrared rays.
- a more efficient infrared absorbing material can be obtained by using both the control of the oxygen amount described in the tungsten oxide and the addition of the element M that generates free electrons.
- the control of the amount of oxygen and the addition of the element M that generates free electrons are used in combination, in the chemical formula M x WO y indicating the composite tungsten oxide, 0.1 ⁇ x ⁇ 0.5, 2.2 ⁇ y ⁇ It is preferable to satisfy the relationship of 3.0.
- the value of x indicating the addition amount of the element M in the chemical formula of the above composite tungsten oxide will be described.
- the value of x is 0.1 or more, a sufficient amount of free electrons is generated, and the desired infrared absorption effect can be obtained.
- the amount of the element M added increases, the supply amount of free electrons increases and the infrared absorption efficiency also increases, but the effect is saturated when the value of x is about 0.5.
- the value of x is 0.5 or less, it is preferable because an impurity phase can be prevented from being generated in the infrared absorbing material.
- the crystal structure of the composite tungsten oxide contained in the composite tungsten oxide particles is not particularly limited, and can contain a composite tungsten oxide having an arbitrary crystal structure. However, when the composite tungsten oxide contained in the composite tungsten oxide particles has a hexagonal crystal structure, the visible light transmittance of the particles and the absorption of light in the near infrared region are particularly improved, which is preferable. .
- FIG. 1 A schematic plan view of the hexagonal crystal structure is shown in FIG.
- six octahedrons formed by WO 6 units indicated by reference numeral 11 are assembled to form a hexagonal void.
- An element M indicated by reference numeral 12 is arranged in the void to constitute one unit, and a large number of these one units are assembled to constitute a hexagonal crystal structure.
- a composite tungsten oxide including a unit structure in which hexagonal voids are formed by assembling six octahedrons in which complex tungsten oxide particles are formed of WO 6 units, and a hexagonal void is formed in the voids.
- the transmittance of light in the visible region and the absorption of light in the near infrared region can be improved.
- the entire composite tungsten oxide particles are composed of the crystalline composite tungsten oxide particles having the structure shown in FIG. 1.
- the composite tungsten oxide particles have such a structure locally, transmission of light in the visible region is possible.
- the effect of improving the absorption of light in the rate and near infrared region can be obtained.
- the composite tungsten oxide particles as a whole may be crystalline or amorphous.
- the element M having a large ionic radius is added as the element M of the composite tungsten oxide, the above hexagonal crystal is easily formed.
- the element M preferably includes one or more of Cs, Rb, K, and Tl, and the element M is more preferably one or more of Cs, Rb, K, and Tl.
- elements other than these may be present in the hexagonal void formed by the WO 6 unit, and are limited to the case where the element M is added as the element M. Not a translation.
- the value of x indicating the amount of the element M added satisfies 0.20 ⁇ x ⁇ 0.50.
- y is preferably 2.2 ⁇ y ⁇ 3.0.
- the composite tungsten oxide contained in the composite tungsten oxide particles can have a tetragonal or cubic tungsten bronze structure in addition to the hexagonal crystal described above, and the composite tungsten oxide having such a structure can also absorb infrared rays. It is effective as a material. That is, it can be suitably used as a material contained in the composite tungsten oxide particles added to the heat ray shielding film.
- the composite tungsten oxide tends to change the absorption position in the near infrared region depending on its crystal structure.
- the absorption position in the near-infrared region tends to move to the longer wavelength side when it is tetragonal than to the cubic crystal, and further to move to the longer wavelength side when it is hexagonal than when it is tetragonal.
- the absorption of light in the visible region is the least in the hexagonal crystal, followed by the tetragonal crystal, and the cubic crystal has the largest absorption in the visible region. Therefore, hexagonal tungsten bronze is preferably used when high light transmittance in the visible region and high light absorption in the near infrared region are particularly required.
- the tendency of the optical characteristics described here is a rough tendency to the last, and changes depending on the kind of added element M, the added amount, and the oxygen amount.
- the material of the infrared absorptive particle used for the heat ray shielding film of this embodiment is not necessarily limited to a hexagonal material.
- the crystal structure of the composite tungsten oxide included in the composite tungsten oxide particles that can be used for the heat ray shielding film of the present embodiment is not limited as described above.
- the composite tungsten oxide includes different composite tungsten oxides at the same time. May be.
- the hexagonal composite tungsten oxide particles can increase the transmittance of visible light and the absorption of near-infrared light. For this reason, it is preferable that the composite tungsten oxide of the composite tungsten oxide particles included in the heat ray shielding film of the present embodiment has a hexagonal crystal system.
- the crystal structure of the composite tungsten oxide tends to be hexagonal as described above. Furthermore, since the light transmittance in the visible region is high and the light transmittance in the infrared region, particularly the near infrared region, is low, the light transmittance in the visible region and the light transmittance in the infrared region are Increases contrast. For this reason, it is more preferable that the element M of the general formula M x WO y representing the composite tungsten oxide is Cs and / or Rb. In particular, when the element M contains Cs, it is particularly preferable that M contains Cs because the weather resistance of the composite tungsten oxide becomes higher.
- the particle diameter of the composite tungsten oxide particles is not particularly limited, and can be arbitrarily selected according to the application in which the heat ray shielding film is used.
- the composite tungsten oxide particles are preferably fine particles, and the composite tungsten oxide particles have a volume average particle diameter of 100 nm.
- the following is preferable. This is because, when the volume average particle diameter of the composite tungsten oxide particles is 100 nm or less, it is possible to prevent light from being shielded by light scattering, and at the same time, while maintaining the visibility in the visible region, it is efficiently transparent. This is because the sex can be maintained.
- the volume average particle diameter means the particle diameter at an integrated value of 50% in the particle size distribution obtained by the laser diffraction / scattering method, and the volume average particle diameter has the same meaning in other portions in this specification. is doing.
- the heat ray shielding film of the present embodiment is used for an application in which transparency in the visible region is particularly important, such as an automobile roof or a side window, it is preferable to further consider scattering reduction due to composite tungsten oxide particles.
- the volume average particle diameter of the composite tungsten oxide particles is more preferably 40 nm or less, further preferably 30 nm or less, and particularly preferably 25 nm or less.
- the volume average particle diameter of the composite tungsten oxide particles is 40 nm or less, the above-described geometric scattering or Mie scattering is reduced and a Rayleigh scattering region is obtained.
- the scattered light is reduced in inverse proportion to the sixth power of the particle diameter, so that the scattering is reduced and the transparency is improved as the dispersed particle diameter is reduced.
- the volume average particle diameter of the composite tungsten oxide particles is 30 nm or less, particularly 25 nm or less, the scattered light is preferably very small.
- the composite tungsten oxide particles preferably have a smaller volume average particle diameter.
- the volume average particle diameter of the composite tungsten oxide particles is too small, it may be difficult to handle when manufacturing the heat ray shielding film or may cause aggregation in the heat ray shielding film.
- the volume average particle diameter of the product particles is preferably 1 nm or more.
- the amount (content) of the composite tungsten oxide particles contained in the heat ray shielding film is not particularly limited, and is arbitrarily determined depending on the degree of heat ray shielding ability required for the heat ray shielding film, the degree of visible light transmittance, etc. You can choose. For example, per unit area in the projected area of the heat ray shielding film, Content of the composite tungsten oxide particles of the heat ray shielding film is preferably set to 0.05 g / m 2 or more 5.0 g / m 2 or less, to 0.1 g / m 2 or more 2.0 g / m 2 or less Is more preferable.
- the ionomer resin is not particularly limited, and various known ionomer resins can be used, and the resin can be arbitrarily selected according to the use application of the heat ray shielding film.
- the ionomer resin for example, ethylene ionomer, styrene ionomer, ionomer elastomer, perfluorocarbon ionomer, urethane ionomer, and the like are known, and any ionomer resin can be used depending on the application and required performance as described above. It can be selected and used.
- the ionomer resin used for the heat ray shielding film can be only one kind, but two or more kinds of ionomer resins can be used in combination.
- the heat-shielding film of the present embodiment or a laminated transparent substrate using the heat-shielding film described later can be suitably used as, for example, a window material of an automobile or a building, a film of a greenhouse, and the like.
- the ionomer resin contained in the heat ray shielding film has excellent transparency, high visible light transmittance, low haze value, and excellent penetration resistance and weather resistance.
- positioning a heat ray shielding film on a transparent base material it is preferable that it is excellent also in the adhesiveness with respect to a transparent base material.
- the ionomer resin preferably contains an ethylene ionomer, and the ionomer resin is more preferably an ethylene ionomer.
- the metal ion contained in the ionomer resin is not particularly limited, and for example, an ionomer resin containing one or more kinds of metal ions selected from zinc, magnesium, lithium, potassium, and sodium can be used. .
- an ionomer resin containing zinc ions can be preferably used.
- ionomer resins include metal element ionomers of ethylene / acrylic acid / acrylic acid ester copolymers, metal element ionomers of ethylene / acrylic acid / methacrylic acid ester copolymers, and ethylene / methacrylic acid / acrylic acid esters.
- metal element ionomers of copolymers examples include metal element ionomers of copolymers, and metal element ionomers of ethylene / methacrylic acid / methacrylic acid ester copolymers.
- the metal ion contained in any ionomer resin is not specifically limited, For example, the ion of 1 or more types of metals selected from zinc, magnesium, lithium, potassium, and sodium can be contained.
- ionomer resins include, for example, Durpon Surlyn (registered trademark) series, Mitsui DuPont Polychemical Hi-Milan (registered trademark) series, Exxon Mobil Chemical IOTEK (registered) Trademark) series and the like can be preferably used.
- Durpon Surlyn registered trademark
- Mitsui DuPont Polychemical Hi-Milan registered trademark
- Exxon Mobil Chemical IOTEK registered) Trademark
- Other components In addition to the composite tungsten oxide and the ionomer resin described above, an arbitrary component can be further added to the heat ray shielding film of the present embodiment. Components that can be optionally added will be described below.
- a dispersant can be added to the heat ray shielding film of the present embodiment in order to uniformly disperse the above-described composite tungsten oxide particles in the ionomer resin.
- the dispersant is not particularly limited, and can be arbitrarily selected according to the manufacturing conditions of the heat ray shielding film.
- the thermal decomposition temperature measured using a differential thermal and thermogravimetric simultaneous measurement device (hereinafter sometimes referred to as TG-DTA) is 250 ° C. or higher, and the urethane main chain, acrylic main chain, styrene main
- the dispersant has a main chain selected from any chain, or a main chain obtained by copolymerization of two or more unit structures selected from urethane, acrylic, and styrene.
- the thermal decomposition temperature is a temperature at which weight loss due to thermal decomposition of the dispersant begins in TG-DTA measurement in accordance with JIS K 7120.
- the thermal decomposition temperature of the dispersant is 250 ° C. or higher, it is possible to suppress the decomposition of the dispersant during kneading with the ionomer resin, browning of the heat ray shielding film due to the decomposition of the dispersant, a decrease in visible light transmittance, etc. This is because the situation in which the original optical characteristics cannot be obtained can be more reliably avoided.
- the dispersant preferably has one or more types selected from an amine-containing group, a hydroxyl group, a carboxyl group, or an epoxy group as a functional group.
- the dispersant having any one of the functional groups described above is adsorbed on the surface of the composite tungsten oxide particles, prevents aggregation of the composite tungsten oxide particles, and more uniformly disperses the composite tungsten oxide particles in the heat ray shielding film. Therefore, it can be preferably used.
- the dispersant having any one of the functional groups described above include, for example, an acrylic-styrene copolymer dispersant having a carboxyl group as a functional group, an acrylic dispersant having an amine-containing group as a functional group, and the like. Is mentioned.
- the dispersant having an amine-containing group as a functional group preferably has a molecular weight Mw of 2000 to 200,000 and an amine value of 5 to 100 mgKOH / g.
- the dispersant having a carboxyl group preferably has a molecular weight of Mw 2000 to 200000 and an acid value of 1 to 50 mgKOH / g.
- the addition amount of the dispersant is not particularly limited, but for example, it is preferably added so as to be 10 parts by mass or more and 1000 parts by mass or less, and 30 parts by mass or more and 400 parts by mass with respect to 100 parts by mass of the composite tungsten oxide particles. It is more preferable to add so that it may become below a part.
- the composite tungsten oxide particles can be more uniformly dispersed in the ionomer resin, and the physical properties of the obtained heat ray shielding film are not adversely affected.
- the heat ray shielding film of this embodiment can further contain an ultraviolet absorber.
- an ultraviolet absorber to the heat ray shielding film, it becomes possible to further cut off light in the ultraviolet region, and the effect of suppressing the temperature rise can be particularly enhanced.
- an ultraviolet absorber to the heat ray shielding film of this embodiment, for example, the influence of ultraviolet rays on the interior of a car or a building in which such a heat ray shielding film is mounted, sunscreen, furniture, interiors, etc. Deterioration and the like can be sufficiently prevented.
- the dispersion in which the composite tungsten oxide particles are dispersed in the resin may have low transmittance due to long-term exposure to strong ultraviolet rays, but by adding an ultraviolet absorber to the heat ray shielding film of this embodiment. , Such a decrease in transmittance can be suppressed.
- the ultraviolet absorber is not particularly limited, and can be arbitrarily selected according to the influence on the visible light transmittance of the heat ray shielding film, the ultraviolet absorbing ability, durability, and the like.
- Examples of ultraviolet absorbers include organic ultraviolet absorbers such as benzophenone compounds, salicylic acid compounds, benzotriazole compounds, triazine compounds, benzotriazolyl compounds, and benzoyl compounds, and inorganic ultraviolet absorbers such as zinc oxide, titanium oxide, and cerium oxide. Etc.
- the ultraviolet absorber preferably contains one or more selected from benzotriazole compounds and benzophenone compounds.
- the benzotriazole compound and the benzophenone compound can greatly increase the visible light transmittance of the heat ray shielding film even when a concentration sufficient to absorb ultraviolet rays is added, and against long-term exposure to strong ultraviolet rays. This is because the durability is high.
- the ultraviolet absorber contains a compound represented by the following chemical formula 1 and / or chemical formula 2, for example.
- the content rate of the ultraviolet absorber in the heat ray shielding film is not particularly limited, and can be arbitrarily selected according to the visible light transmittance required for the heat ray shielding film, the ultraviolet ray shielding ability, and the like. It is preferable that the content rate of the ultraviolet absorber in a heat ray shielding film is 0.02 mass% or more and 5.0 mass% or less, for example. This is because if the content of the ultraviolet absorber is 0.02% by mass or more, ultraviolet light that cannot be absorbed by the composite tungsten oxide particles can be sufficiently absorbed. In addition, when the content is 5.0% by mass or less, the ultraviolet absorber does not precipitate in the heat ray shielding film, and does not significantly affect the strength, adhesive force, and penetration resistance of the film.
- the heat ray shielding film of the present embodiment can further contain HALS (hindered amine light stabilizer).
- HALS hindered amine light stabilizer
- the ultraviolet absorbing ability of the heat ray shielding film of this embodiment can be increased by adding an ultraviolet absorber.
- the ultraviolet absorber may deteriorate with long-term use, and the ultraviolet absorbing ability may be reduced.
- HALS it is possible to prevent the ultraviolet absorber from deteriorating and contribute to the maintenance of the ultraviolet ray absorbing ability of the heat ray shielding film of this embodiment.
- the dispersion of the composite tungsten oxide particles dispersed in the resin may have a reduced transmittance due to long-term exposure to strong ultraviolet rays.
- HALS is added to the heat ray shielding film of the present embodiment, the decrease in the transmittance can be suppressed as in the case where the ultraviolet absorber is added.
- HALS there are compounds that themselves have the ability to absorb ultraviolet rays.
- the addition of the compound can combine the effects of adding the ultraviolet absorber and the effects of adding HALS.
- HALS is not particularly limited, and can be arbitrarily selected according to the influence on the visible light transmittance of the heat ray shielding film, compatibility with the ultraviolet absorber, durability, and the like.
- the content of HALS in the heat ray shielding film is not particularly limited, and can be arbitrarily selected according to the visible light transmittance, weather resistance, and the like required for the heat ray shielding film.
- the content of HALS in the heat ray shielding film is preferably 0.05% by mass or more and 5.0% by mass or less, for example. This is because if the HALS content is 0.05% by mass or more, the effects of the addition of the HALS can be sufficiently exhibited in the heat ray shielding film. Further, if the content is 5.0% by mass or less, HALS does not precipitate in the heat ray shielding film, and does not significantly affect the strength, adhesive force, and penetration resistance of the film.
- the heat ray shielding film of the present embodiment can further contain an antioxidant (antioxidant).
- the ionomer resin has high weather resistance, but addition of an antioxidant can suppress oxidative deterioration of the resin and further improve the weather resistance. Further, other additives contained in the resin, such as composite tungsten oxide, ultraviolet absorber, HALS, dye compounds, pigment compounds, infrared absorbing substances, coupling agents, surfactants, antistatic agents described later It is possible to suppress the oxidative deterioration such as and improve the weather resistance.
- the antioxidant is not particularly limited, and can be arbitrarily selected according to the influence on the visible light transmittance of the heat ray shielding film and the desired durability.
- phenolic antioxidants, sulfur-based antioxidants and phosphorus-based antioxidants can be suitably used.
- the content of the antioxidant in the heat ray shielding film is not particularly limited, and can be arbitrarily selected according to the visible light transmittance, weather resistance, and the like required for the heat ray shielding film.
- the content of the antioxidant in the heat ray shielding film is preferably 0.05% by mass or more and 5.0% by mass or less, for example. This is because if the content of the antioxidant is 0.05% by mass or more, the effect of the addition of the antioxidant can be sufficiently exhibited in the heat ray shielding film. In addition, when the content is 5.0% by mass or less, the antioxidant is not precipitated in the heat ray shielding film, and does not significantly affect the strength, adhesive force, and penetration resistance of the film.
- the dispersant, the ultraviolet absorber, the HALS, and the antioxidant have been described as optional additive components, but various other additives can be blended.
- an azo dye, a cyanine dye, a quinoline dye, a perylene dye, carbon black, or the like which can be used for coloring an ionomer resin, is added to give an arbitrary color tone as desired. Also good.
- infrared absorbing substances can be added. Although it does not specifically limit as another infrared absorptive substance, For example, it is preferable that it is a substance which can absorb the light of a wavelength range different from the used composite tungsten oxide particle. As another infrared absorbing substance, for example, an infrared absorbing organic compound can be preferably used. By adding an infrared absorbing organic compound, higher heat ray shielding ability can be obtained.
- additives for example, a coupling agent, a surfactant, an antistatic agent and the like can be added.
- the heat ray shielding film of the present embodiment is used to improve mechanical, chemical or optical properties such as penetration resistance, weather resistance, and transparency, and when the heat ray shielding film is disposed on a transparent substrate.
- other resin materials other than the ionomer resin may be included.
- the type of resin added in addition to the ionomer resin is not particularly limited.
- the resin has good compatibility with the ionomer resin to be used, and does not impair the characteristic physical properties such as transparency.
- Any resin material can be used as long as it is present.
- an ethylene / unsaturated carboxylic acid copolymer, an ethylene / unsaturated ester / unsaturated carboxylic acid copolymer, or the like can be used.
- a resin material having a melting point higher than that of an ionomer resin can be suitably used because it can improve the weather resistance of the heat ray shielding film and the stability during thermal processing.
- the heat ray shielding film of the present embodiment described above preferably has high transparency and heat ray shielding ability.
- the transparency of the heat ray shielding film and the heat ray shielding ability, that is, the heat shielding property can be evaluated by the visible light transmittance and the solar radiation transmittance, respectively.
- the degree of transparency and heat ray shielding ability required for the heat ray shielding film of the present embodiment are not particularly limited, and it is preferable to have performance according to the use of the heat ray shielding film.
- the visible light transmittance when used for applications such as window materials, it is preferable that the visible light transmittance is high from the viewpoint of maintaining light transmittance to human eyes, and from the viewpoint of reducing the incidence of heat from sunlight. It is preferable that the transmittance is low.
- the visible light transmittance is higher from the viewpoint of maintaining the visible light permeability necessary for the growth of plants. From the viewpoint of reducing the incidence of heat, the solar radiation transmittance is preferably low.
- the heat ray shielding film of the present embodiment when used as a building material or a window material for an automobile, the heat ray shielding film has a visible light transmittance of 70% or more and transmits sunlight.
- the rate is preferably 50% or less.
- the visible light transmittance is 70% or more and the solar radiation transmittance is 40% or less.
- the visible light transmittance and the solar radiation transmittance are defined in JIS R 3106.
- the visible light transmittance and the solar radiation transmittance can be set to desired ranges by adjusting, for example, the amount of composite tungsten oxide particles contained in the heat ray shielding film of the present embodiment.
- the heat ray shielding film of this embodiment can suppress the decoloring phenomenon by containing an ionomer resin.
- the degree of suppression of the decoloring phenomenon can be evaluated by, for example, a change in the total light transmittance after standing for a long time in a high temperature and high humidity environment.
- the change in the value of the total light transmittance is preferably 3% or less before and after being left for 24 hours in an environment of a temperature of 85 ° C. and a relative humidity of 90%, and preferably 2% or less. More preferably, it is more preferably 1% or less.
- the total light transmittance is defined in JIS K 7361-1.
- the heat ray shielding film of the present embodiment can have high weather resistance by containing an ionomer resin. For this reason, even when the heat ray shielding film of the present embodiment is exposed and placed in a high-temperature and high-humidity environment, the occurrence of a decoloring phenomenon can be suppressed. And the high transmittance
- permeability can be maintained, and it can suppress that the external appearance of a heat ray shielding film is impaired or a heat ray shielding capability falls.
- the heat ray shielding film of this embodiment contains composite tungsten oxide particles as infrared absorbing particles, high heat ray shielding ability can be exhibited while maintaining high visible light transmittance. For this reason, for example, when applied to windows of automobiles or buildings, the comfort in the car or building is improved, the fuel consumption is improved by reducing the air-conditioner load in the car, and the energy is saved by reducing the air-conditioner load in the building. Etc. can be achieved.
- the usage pattern of the heat ray shielding film of the present embodiment is not particularly limited, and can be used alone, for example.
- the heat ray shielding film can be used, for example, as a film that covers the outer surface of a greenhouse, a film that partitions an area where heat ray transmission is desired to be suppressed, or the like.
- the heat ray shielding film of the present embodiment can be used by being disposed on one side or both sides of a transparent substrate such as inorganic glass or transparent resin.
- a transparent substrate such as inorganic glass or transparent resin.
- the heat ray shielding film of the present embodiment can be bonded to one main plane or both main planes of a single transparent substrate.
- the heat ray shielding film of this embodiment can be arrange
- the heat ray shielding laminated transparent base material will be described later.
- Method for manufacturing heat ray shielding film Next, one structural example of the manufacturing method of the heat ray shielding film of this embodiment is demonstrated.
- the above-mentioned heat ray shielding film can be suitably produced by the method for producing a heat ray shielding film of the present embodiment. For this reason, since it can comprise similarly to the case of the above-mentioned heat ray shielding film except the point demonstrated below, description is abbreviate
- the manufacturing method of the heat ray shielding film of this embodiment is not particularly limited, for example, it can have the following steps.
- a dispersion production process for producing a dispersion in which composite tungsten oxide particles and a dispersant are dispersed in an organic solvent A dispersion production process for producing a composite tungsten oxide particle dispersion in which the composite tungsten oxide particles are dispersed in a solid dispersant by removing the organic solvent in the dispersion produced in the dispersion production process.
- the dispersion liquid manufactured at the dispersion manufacturing process can be used for a kneading
- the organic solvent can be removed at the same time as the composite tungsten oxide particles are uniformly dispersed in the ionomer resin by the kneading step.
- the composite tungsten oxide particles and the dispersant are added to and mixed with an organic solvent, and an organic solvent dispersion of the composite tungsten oxide particles can be obtained using a general dispersion method.
- a dispersion method for example, dispersion methods, such as a bead mill, a ball mill, a sand mill, ultrasonic dispersion, a paint shaker, can be used.
- the type of the organic solvent used in the dispersion manufacturing process is not particularly limited.
- an organic solvent having a boiling point of 120 ° C. or less can be preferably used. This is because if the boiling point is 120 ° C. or less, the organic solvent can be easily removed in the subsequent step of producing the dispersion.
- the productivity of the composite tungsten oxide particle dispersion can be improved by the rapid removal of the organic solvent in the dispersion manufacturing process and the like.
- the dispersion manufacturing process proceeds easily and sufficiently, it can be avoided that an excess organic solvent remains in the composite tungsten oxide particle dispersion. As a result, it is possible to more reliably avoid the occurrence of defects such as bubbles in the heat ray shielding film in the molding process.
- organic solvent examples include toluene, methyl ethyl ketone, methyl isobutyl ketone, butyl acetate, isopropyl alcohol, ethanol, and the like, but are not limited thereto. Any material having a boiling point of 120 ° C. or lower and capable of uniformly dispersing the composite tungsten oxide particles can be used.
- the addition amount of the organic solvent is not particularly limited, and the addition amount can be arbitrarily selected so that a dispersion can be formed according to the addition amount of the composite tungsten oxide particles and the dispersant.
- the amount of the dispersant added is not particularly limited as described above. For example, it is preferable to add so that it may become 10 to 1000 mass parts with respect to 100 mass parts of composite tungsten oxide particles, and it is more preferable to add so that it may become 30 to 400 mass parts. It is not necessary to add the total amount of the dispersant when the dispersion is produced in the dispersion production process. For example, in consideration of the viscosity of the dispersion, etc., after forming the dispersion by the above-described dispersion method for the mixture of the added amount of the dispersant, the composite tungsten oxide particles, and the organic solvent, The remaining dispersant may be added.
- the composite tungsten oxide particles are removed by adding an appropriate amount of a dispersant to the dispersion in which the composite tungsten oxide particles and the dispersant are dispersed in an organic solvent, if necessary, and then removing the organic solvent.
- Dispersions can be produced.
- the method for removing the organic solvent from the dispersion liquid in which the composite tungsten oxide particles and the dispersant are dispersed in the organic solvent is not particularly limited, but for example, reduced pressure drying can be preferably used.
- the composite tungsten oxide particle dispersion and the organic solvent component can be separated by drying under reduced pressure while stirring a dispersion in which the composite tungsten oxide particles and the dispersant are dispersed in an organic solvent.
- a vacuum agitation type dryer may be mentioned.
- the specific pressure of the reduced pressure when the organic solvent is removed is not limited and can be appropriately selected.
- the removal efficiency of the organic solvent is improved by using a vacuum drying method, and the composite tungsten oxide particle dispersion is not exposed to a high temperature for a long time. It is preferable that the particle particle dispersion does not aggregate. Furthermore, productivity is increased, and it is easy to collect the evaporated organic solvent, which is preferable from the environmental consideration.
- the composite tungsten oxide particle dispersion obtained in the dispersion manufacturing step and the ionomer resin can be kneaded.
- other additives such as an ultraviolet absorber added to the heat ray shielding film, HALS, an antioxidant, and an infrared absorbing organic compound may be added and kneaded together.
- the timing which adds these additives etc. is not specifically limited, For example, it can also add in other processes, such as a dispersion manufacturing process.
- the kneading method is not particularly limited, and a known resin kneading method can be arbitrarily selected and used.
- the molding step is a step of molding the kneaded product obtained in the kneading step, and the molding method is not particularly limited, and the size and shape such as the thickness of the heat ray shielding film to be produced, the viscosity of the kneaded product, etc. It can be arbitrarily selected depending on the case. For example, a molding method such as an extrusion molding method or a calendar molding method can be employed.
- the shape of a molded object is not specifically limited, It can select according to the shape requested
- Transparent substrate for heat ray shielding and transparent, manufacturing method for transparent substrate for heat ray shielding, automobile, building Next, one structural example of the manufacturing method of the heat ray shielding matching transparent base material of this embodiment and a heat ray shielding matching transparent base material is demonstrated.
- the heat ray shielding laminated transparent base material of this embodiment can have the above-mentioned heat ray shielding film, and its specific form is not particularly limited.
- a plurality of transparent base materials and the above-described heat ray shielding film may be provided, and the heat ray shielding film may be arranged between the plurality of transparent base materials.
- the type of the transparent substrate to be used is not particularly limited, and can be arbitrarily selected according to the use of the heat ray shielding laminated transparent substrate, for example, a glass substrate, various resin substrates, etc. Can be suitably used. Moreover, although the same material may be used for all of the plurality of transparent substrates, substrates of different materials can be used in combination.
- a base material used for the heat ray shielding laminated transparent base material of the present embodiment for example, at least one of a plurality of transparent base materials is a glass base material because of weather resistance and high visible light transmittance.
- all of the plurality of transparent substrates can be glass substrates.
- a heat ray shielding laminated transparent substrate using a glass substrate of inorganic glass as a transparent substrate, it can be particularly suitably used as a glass for a front of an automobile or a window of a building.
- the heat ray shielding laminated transparent base material has three or more transparent base materials, there are two or more between the transparent base materials.
- the heat ray shielding film may be disposed between one or more selected transparent substrates among the transparent substrates, and there may be a space between the transparent substrates without arranging the heat ray shielding film.
- a heat ray shielding film may be disposed between the materials.
- the configuration between the transparent substrates is not particularly limited.
- an intermediate film having a function different from the above-described heat ray shielding film may be disposed, or the transparent substrate It is possible to increase the heat insulation performance by making a vacuum between them or by enclosing a gas having low thermal conductivity.
- the heat ray shielding film can be disposed between the transparent substrates as a single unit, but as described later, a multilayer film composed of the heat ray shielding film and other films is formed and then disposed between the transparent substrates. You can also
- the heat-shielding laminated transparent base material of the present embodiment can be obtained, for example, by pasting and integrating a plurality of opposing transparent base materials sandwiched by the above-mentioned heat-ray shielding film by a known method.
- an arbitrary intermediate film such as another resin intermediate film can be sandwiched between the transparent base materials together with the above heat ray shielding film.
- another intermediate film for example, an intermediate film having functions such as ultraviolet cut, sound insulation, color adjustment, and adhesion force adjustment can be used to realize a more highly functional heat-ray shielding laminated transparent base material.
- resin contained in another intermediate film is not limited, You may be comprised by resin other than ionomer resin.
- a heat ray shielding laminated transparent base material using both the above-mentioned heat ray shielding film and an infrared reflection film can also be used. That is, at least one infrared reflective film may be arranged between a plurality of transparent substrates.
- the infrared ray reflection film can be sandwiched between the heat ray shielding film of this embodiment and a transparent resin film to be integrated into a multilayer film. Then, the infrared reflective film and the multilayer film having the heat ray shielding film of this embodiment are sandwiched between a plurality of transparent substrates, for example, a glass substrate such as inorganic glass or a transparent resin substrate, and are bonded together by a known method. By integrating, a heat ray shielding laminated transparent base material can be obtained.
- the positional relationship between the heat ray shielding film and the infrared reflective film is not particularly limited, and can be arbitrarily selected according to the environment used.
- the infrared reflection film is configured to be positioned outside the heat ray shielding film in consideration of the temperature rise suppressing effect in the automobile or the room. Is preferred.
- the characteristics of the infrared reflective film described here are not particularly limited, and can be arbitrarily selected according to the performance required when the heat-shielding laminated transparent base material is used.
- the infrared reflective film mainly reflects light in the visible light long wavelength region to the near infrared region, for example, in the wavelength range of 700 nm to 1200 nm, when attached to a transparent substrate. It is preferable that
- the infrared reflection film strongly reflects the wavelength of 700 nm to 1200 nm, which is relatively weak in light absorption by the composite tungsten oxide particles, so that the composite tungsten oxide and the infrared reflection film complement the near infrared region. Can be shielded widely. For this reason, the heat-shielding characteristic of the heat ray shielding laminated transparent base material can be further improved.
- the maximum reflectance of light having a wavelength of 700 nm to 1200 nm is preferably 30% or more and 100% or less, and 50% or more. More preferably, it is 100% or less.
- the infrared reflective film hardly absorbs sunlight in the visible region.
- the visible light transmittance is preferably 80% or more, and more preferably 85% or more.
- the infrared reflective film preferably has both heat ray shielding ability and light transmittance in the visible region. For this reason, when an infrared reflective film is affixed to a transparent substrate, the visible light transmittance is 80% or more, and the maximum reflectance for light having a wavelength of 700 nm to 1200 nm is 30% to 100%. Preferably there is. In particular, when an infrared reflective film is attached to a transparent substrate, the visible light transmittance is 85% or more, and the maximum value of the reflectance with respect to light having a wavelength of 700 nm to 1200 nm is 50% or more and 100% or less. It is more preferable.
- the infrared reflective film is preferably a film that transmits electromagnetic waves rather than a film with a metal film that has conductivity and does not transmit electromagnetic waves in the wavelength range as described above.
- resins having different refractive indexes are used.
- a known film such as a film having a characteristic of reflecting infrared rays by a multilayer film alternately laminated or a film having a characteristic of reflecting infrared rays by a cholesteric liquid crystal can be preferably used.
- the heat shielding property of the heat ray shielding laminated transparent base material of the present embodiment is indicated by the solar radiation transmittance with respect to the visible light transmittance.
- the solar transmittance is preferably 50% or less, and more preferably 40% or less.
- the visible light transmittance specified by the Road Transport Vehicle Law must satisfy 70% or more, and high heat ray shielding is also achieved. It is preferable to have a function. For this reason, for example, when the visible light transmittance of the heat-shielding laminated transparent base material is 70% as described above, the solar radiation transmittance is preferably 50% or less, and more preferably 40% or less.
- the heat ray shielding laminated transparent base material of the present embodiment preferably has a visible light transmittance of 70% or more and a solar radiation transmittance of 50% or less. Moreover, it is more preferable that the visible light transmittance is 70% or more and the solar radiation transmittance is 40% or less.
- the heat-shielding transparent base material preferably has a natural color tone, that is, close to a transparent or achromatic color when, for example, a window material of an automobile or a building is used.
- a natural color tone that is, close to a transparent or achromatic color when, for example, a window material of an automobile or a building is used.
- the color of the fluoroscopic image can be normally identified in order to ensure safety during driving.
- the heat ray shielding film used for the heat ray shielding laminated transparent base material is, for example, a fluoroscopic image in a color discrimination test based on JIS R 3211 and JIS R 3212 that define the performance required for laminated glass for automobiles. It is preferable that the color of can be normally identified.
- the window material including the heat ray shielding matched transparent base material is preferably used as a window of an automobile or a building. be able to.
- an automobile equipped with a window material including a heat ray shielding matched transparent base material or a building including a window material including a heat ray shielding matched transparent base material can be used.
- the manufacturing method of the heat ray shielding laminated transparent base material of the present embodiment is not particularly limited, and an intermediate layer including the heat ray shielding film described above is disposed between the transparent base materials, and includes an intermediate including the transparent base material and the heat ray shielding film. It can have the bonding process of bonding a layer.
- the method of bonding the transparent substrate and the heat ray shielding film is not particularly limited, and various methods such as a method of bonding with an adhesive or the like, a method of thermocompression bonding, and the like can be used.
- the intermediate layer including the heat ray shielding film may be a single film composed of the heat ray shielding film, for example, as described above, such as a multilayer film in which the infrared reflection film and the heat ray shielding film are integrated.
- a film (layer) laminated and integrated with another film may be used.
- the heat ray shielding laminated transparent base material of the present embodiment has the heat ray shielding film having the above-mentioned high weather resistance, the heat ray shielding film is exposed from the transparent base material and is placed in a high temperature and high humidity environment. The occurrence of a decoloring phenomenon can be suppressed even in the case of occurrence. For this reason, it is possible to maintain high light transmittance in the visible region and low solar transmittance, and to suppress the appearance of the heat ray shielding laminated transparent base material from being deteriorated or the heat ray shielding ability from being lowered. it can.
- the heat ray shielding laminated transparent base material of the present embodiment has the above-mentioned heat ray shielding film, and since the heat ray shielding film contains composite tungsten oxide particles as infrared absorbing particles, high visible light. High heat ray shielding ability can be exhibited while maintaining the transmittance. For this reason, for example, when applied to windows of automobiles or buildings, the comfort in the car or building is improved, the fuel consumption is improved by reducing the air-conditioner load in the car, and the energy is saved by reducing the air-conditioner load in the building. Etc. can be achieved.
- volume average particle diameter The volume average particle diameter of the composite tungsten oxide particles in the fine particle dispersion was measured with a Microtrac particle size distribution meter (manufactured by Nikkiso Co., Ltd. model: UPA-UT).
- Total light transmittance The total light transmittance of the obtained heat ray-shielding film was measured based on JIS K 7361-1 using a haze / transmittance meter (Murakami Color Research Laboratory Model: HM-150).
- the total light transmittance is measured before and after the weather resistance test.
- (Visible light transmittance, solar transmittance) The visible light transmittance and solar radiation transmittance of the heat ray shielding laminated transparent base material were measured according to JIS R 3106 from transmittances of 200 nm to 2600 nm measured using a spectrophotometer (model: U-4100 manufactured by Hitachi, Ltd.). Based on the calculation.
- Example 1 As a composite tungsten oxide particle, 20 parts by mass of Cs 0.33 WO 3 particles (hereinafter referred to as particle a), a dispersant containing an amine as a functional group and an acrylic main chain (amine value 48 mgKOH / g, (Decomposition temperature 250 ° C.) (hereinafter referred to as dispersant a) was weighed to 10 parts by mass and 70 parts by mass of methyl isobutyl ketone (boiling point 116.2 ° C.) as an organic solvent.
- particle a As a composite tungsten oxide particle, 20 parts by mass of Cs 0.33 WO 3 particles (hereinafter referred to as particle a), a dispersant containing an amine as a functional group and an acrylic main chain (amine value 48 mgKOH / g, (Decomposition temperature 250 ° C.) (hereinafter referred to as dispersant a) was weighed to 10 parts by mass and 70 parts by mass of methyl isobutyl
- particle dispersion a a dispersion of particles a (hereinafter referred to as particle dispersion a). Process).
- the volume average particle diameter of the composite tungsten oxide particles in the particle dispersion a was measured by the above-mentioned method and found to be 21 nm.
- the volume average particle diameter is the volume average of the composite tungsten oxide particles in the heat ray shielding film. Particle size.
- the mass of the dispersing agent in the above formula represents the sum of the amount added in the step of producing the particle dispersion a, that is, the amount added after the production of the particle dispersion a.
- dispersion a a dispersion of particles a (hereinafter referred to as dispersion a).
- the methyl isobutyl ketone content in the obtained dispersion a was 2.9% by mass (dispersion production process).
- the obtained mixture of the ionomer resin pellets and dispersion a was supplied to a twin-screw extruder set at 220 ° C. and kneaded (kneading step), and then extruded from a T-die by a calender roll method. Molded into a 5 mm thick sheet (molding process). As a result, a heat ray shielding film (hereinafter referred to as heat ray shielding film A) was obtained.
- the content of the composite tungsten oxide particles in the heat ray shielding film A per unit area in the projected area of the produced heat ray shielding film A is 1.2 g / m 2 .
- the produced heat ray shielding film A is temporarily sandwiched between two transparent float glasses (3 mm thick), heated to 130 ° C., and subjected to a press treatment for 5 minutes under vacuum to obtain a heat ray shielding laminated transparent base material (hereinafter, heat ray). It was described as a shielded transparent substrate A).
- the visible light transmittance and the solar radiation shielding rate were measured and calculated for the heat ray shielding laminated transparent base material A by the above-described method, the visible light transmittance was 71.5% and the solar radiation transmittance was 34.9%.
- the heat-shielded transparent base material A was allowed to stand in a constant temperature and humidity chamber set at a temperature of 85 ° C. and a relative humidity of 90%.
- a decoloring phenomenon edge fade phenomenon in which the color disappeared from the unsealed end of A was not observed.
- Table 2 shows the evaluation results of the heat-shielded transparent base material A.
- Example 2 A heat ray shielding film was produced in the same manner as in Example 1 except that the ratio of the material supplied to the kneading process was changed.
- the mixture was supplied to a twin screw extruder set at 220 ° C. and kneaded (kneading step), and then extruded from a T die and formed into a 0.5 mm thick sheet by a calender roll method (molding step). ). Thereby, a heat ray shielding film (hereinafter referred to as a heat ray shielding film B) was obtained.
- a heat ray shielding film B hereinafter referred to as a heat ray shielding film B
- the content of the composite tungsten oxide particles in the heat ray shielding film B per unit area in the projected area of the produced heat ray shielding film B is 0.8 g / m 2 .
- heat ray shielding matched transparent base material B a heat ray shielding laminated transparent base material (hereinafter referred to as heat ray shielding matched transparent base material B) was obtained in the same manner as in Example 1 except that the heat ray shielding film B produced in this example was used.
- the visible light transmittance was 78.8%
- the solar radiation transmittance was 45.2%.
- Example 3 A heat ray shielding film was produced in the same manner as in Example 1 except that the ratio of the material supplied to the kneading process was changed.
- the mixture was supplied to a twin screw extruder set at 220 ° C. and kneaded (kneading step), and then extruded from a T die and formed into a 0.5 mm thick sheet by a calender roll method (molding step). ). Thereby, a heat ray shielding film (hereinafter referred to as a heat ray shielding film C) was obtained.
- a heat ray shielding film C hereinafter referred to as a heat ray shielding film C
- the content of the composite tungsten oxide particles in the heat ray shielding film C per unit area in the projected area of the produced heat ray shielding film C is 0.3 g / m 2 .
- heat ray shielding matched transparent base material C a heat ray shielding laminated transparent base material (hereinafter referred to as heat ray shielding matched transparent base material C) was obtained in the same manner as in Example 1 except that the heat ray shielding film C produced in this example was used.
- the visible light transmittance was 84.8%
- the solar radiation transmittance was 61.5%.
- IOTEK IONOMERS 4200 manufactured by EXXON MOBIL CHEMICAL, described as Ethylene-based ionomer 2 in Table 1 in place of High Milan 1706 as pellets of ionomer resin, a heat ray shielding film ( Hereinafter, it is described as a heat ray shielding film D).
- IOTEK IONOMERS 4200 is an ethylene ionomer and contains zinc as a metal ion.
- content of the composite tungsten oxide particle in the heat ray shielding film D per unit area in the projected area of the produced heat ray shielding film D is 1.2 g / m 2 .
- the total light transmittance of the heat ray shielding film D was measured and found to be 72.0%. After conducting a weather resistance test on the heat ray shielding film D in the same manner as in Example 1, the total light transmittance was measured again, and it was 72.7%. Therefore, the change in the total light transmittance before and after the weather resistance test was 0.7%. Moreover, when visually confirmed, the decoloring phenomenon in which the color of the composite tungsten oxide particles in the heat ray shielding film D was erased was not observed even after the weather resistance test. The results are shown in Table 1.
- heat ray shielding matched transparent base material D a heat ray shielding laminated transparent base material (hereinafter referred to as heat ray shielding matched transparent base material D) was obtained in the same manner as in Example 1 except that the heat ray shielding film D produced in this example was used.
- the visible light transmittance was 70.8%
- the solar radiation transmittance was 35.2%.
- Example 5 A heat ray shielding film was produced in the same manner as in Example 1 except that the material to be supplied to the kneading process was changed to add an ultraviolet absorber.
- Tinuvin 326 which is an ultraviolet absorber is a benzotriazole compound represented by the above-described chemical formula 1. Moreover, since the preparation method of the dispersion a was demonstrated in Example 1, description is abbreviate
- the mixture was supplied to a twin screw extruder set at 220 ° C. and kneaded (kneading step), and then extruded from a T die and formed into a 0.5 mm thick sheet by a calender roll method (molding step). ). Thereby, a heat ray shielding film (hereinafter referred to as a heat ray shielding film E) was obtained.
- a heat ray shielding film E hereinafter referred to as a heat ray shielding film E
- content of the composite tungsten oxide particle in the heat ray shielding film E per unit area in the projected area of the produced heat ray shielding film E is 1.2 g / m 2 .
- heat ray shielding matched transparent base material E a heat ray shielding laminated transparent base material (hereinafter referred to as heat ray shielding matched transparent base material E) was obtained in the same manner as in Example 1 except that the heat ray shielding film E produced in this example was used.
- the visible light transmittance was 71.2% and the solar radiation transmittance was 33.4%.
- Example 6 A heat ray shielding film was produced in the same manner as in Example 5 except that the composition of the material supplied to the kneading step was changed.
- the mixture was supplied to a twin screw extruder set at 220 ° C. and kneaded (kneading step), and then extruded from a T die and formed into a 0.5 mm thick sheet by a calender roll method (molding step). ).
- a heat ray shielding film (hereinafter referred to as a heat ray shielding film F) was obtained.
- the content of the composite tungsten oxide particles in the heat ray shielding film F per unit area in the projected area of the produced heat ray shielding film F is 1.2 g / m 2 .
- heat ray shielding matched transparent base material F a heat ray shielding laminated transparent base material (hereinafter referred to as heat ray shielding matched transparent base material F) was obtained in the same manner as in Example 1 except that the heat ray shielding film F produced in this example was used.
- the visible light transmittance was 70.3%
- the solar radiation transmittance was 32.5%.
- Example 7 A heat ray shielding film was produced in the same manner as in Example 5 except that the composition of the material supplied to the kneading step was changed.
- the mixture was supplied to a twin screw extruder set at 220 ° C. and kneaded (kneading step), and then extruded from a T die and formed into a 0.5 mm thick sheet by a calender roll method (molding step). ).
- a heat ray shielding film (hereinafter referred to as a heat ray shielding film G) was obtained.
- the content of the composite tungsten oxide particles in the heat ray shielding film G per unit area in the projected area of the produced heat ray shielding film G is 1.2 g / m 2 .
- heat ray shielding matched transparent base material G a heat ray shielding laminated transparent base material (hereinafter referred to as heat ray shielding matched transparent base material G) was obtained in the same manner as in Example 1 except that the heat ray shielding film G produced in this example was used.
- the visible light transmittance was 71.1% and the solar radiation transmittance was 32.5%.
- Example 8 A heat ray shielding film was produced in the same manner as in Example 5 except that the composition of the material supplied to the kneading step was changed.
- the mixture was supplied to a twin screw extruder set at 220 ° C. and kneaded (kneading step), and then extruded from a T die and formed into a 0.5 mm thick sheet by a calender roll method (molding step). ).
- a heat ray shielding film (hereinafter referred to as a heat ray shielding film H) was obtained.
- the content of the composite tungsten oxide particles in the heat ray shielding film H per unit area in the projected area of the produced heat ray shielding film H is 1.2 g / m 2 .
- heat ray shielding matched transparent base material H a heat ray shielding laminated transparent base material (hereinafter referred to as heat ray shielding matched transparent base material H) was obtained in the same manner as in Example 1 except that the heat ray shielding film H produced in this example was used.
- the visible light transmittance was 70.8%
- the solar radiation transmittance was 32.3%.
- Example 9 A heat ray shielding film was produced in the same manner as in Example 1 except that the composition of the material supplied to the kneading step was changed.
- Tinuvin 328 which is an ultraviolet absorber is a benzotriazole compound represented by the above-described chemical formula 2.
- Irgafos 168 an antioxidant, is CAS No. Tris (2,4-di-tert-butylphenyl) phosphite represented by 31570-04-4.
- CHIMASSORB 2020 which is HALS is CAS No. Dibutylamine, 1.3.5-triazine, N, N′-bis (2,2,6,6-tetramethyl-4-piperidyl) -1,6-hexamethylenediamine represented by 192268-64-7 And N- (2,2,6,6-tetramethyl-4-piperidyl) butylamine.
- the preparation method of the dispersion a was demonstrated in Example 1, description is abbreviate
- the mixture was supplied to a twin screw extruder set at 220 ° C. and kneaded (kneading step), and then extruded from a T die and formed into a 0.5 mm thick sheet by a calender roll method (molding step). ).
- a heat ray shielding film (hereinafter referred to as a heat ray shielding film I) was obtained.
- the content of the composite tungsten oxide particles in the heat ray shielding film I per unit area in the projected area of the produced heat ray shielding film I is 1.2 g / m 2 .
- the total light transmittance of the heat ray shielding film I was measured and found to be 72.3%. After conducting a weather resistance test on the heat ray shielding film I in the same manner as in Example 1, the total light transmittance was measured again, and it was 72.5%. Therefore, the change in the total light transmittance before and after the weather resistance test was 0.2%. Further, when visually confirmed, no decoloring phenomenon was observed in which the color of the composite tungsten oxide particles in the heat ray shielding film I was decolored even after the weather resistance test. The results are shown in Table 1.
- heat ray shielding matched transparent base material I a heat ray shielding laminated transparent base material (hereinafter referred to as heat ray shielding matched transparent base material I) was obtained in the same manner as in Example 1 except that the heat ray shielding film I produced in this example was used.
- the visible light transmittance was 71.9% and the solar radiation transmittance was 33.2%.
- Example 10 A heat ray shielding film was produced in the same manner as in Example 1 except that the composition of the material supplied to the kneading step was changed.
- Tinuvin 328 which is an ultraviolet absorber is a benzotriazole compound represented by the above-described chemical formula 2.
- Irganox 1010 an antioxidant, is CAS No. Pentaerythritol tetrakis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate] shown by 6683-19-8.
- Tinuvin 144 which is HALS is CAS No. Bis (1,2,2,6,6-pentamethyl-4-piperidyl) [[3,5-bis (1,1-dimethylethyl) -4-hydroxyphenyl] methyl represented by 63843-89-0 ] Butyl malonate.
- the preparation method of the dispersion a was demonstrated in Example 1, description is abbreviate
- the mixture was supplied to a twin screw extruder set at 220 ° C. and kneaded (kneading step), and then extruded from a T die and formed into a 0.5 mm thick sheet by a calender roll method (molding step). ).
- a heat ray shielding film (hereinafter referred to as a heat ray shielding film J) was obtained.
- content of the composite tungsten oxide particle in the heat ray shielding film J per unit area in the projected area of the produced heat ray shielding film J is 1.2 g / m 2 .
- heat ray shielding matched transparent base material J a heat ray shielding laminated transparent base material (hereinafter referred to as heat ray shielding matched transparent base material J) was obtained in the same manner as in Example 1 except that the heat ray shielding film J produced in this example was used.
- the visible light transmittance was 71.5% and the solar radiation transmittance was 32.8%.
- Example 11 As composite tungsten oxide particles, 20 parts by mass of Rb 0.33 WO 3 particles (hereinafter referred to as particle b), 10 parts by mass of dispersant a, and 70 parts by mass of methyl isobutyl ketone as an organic solvent were weighed.
- particle dispersion b dispersion production
- the volume average particle diameter of the composite tungsten oxide particles in the particle dispersion b was measured by the above-mentioned method, and found to be 29 nm.
- the volume average particle diameter is the volume average of the composite tungsten oxide particles in the heat ray shielding film. Particle size.
- the mass of the dispersing agent in the above formula indicates the sum of the amount added in the step of producing the particle dispersion b, that is, the amount added after the production of the particle dispersion b.
- dispersion b a dispersion of particles b
- the methyl isobutyl ketone content in the obtained dispersion b was 3.4% by mass (dispersion production process).
- Himiran 1706 which is a pellet of ionomer resin, and 1.5 parts by mass of dispersion b were weighed and mixed thoroughly.
- high Milan 1706 is an ethylene ionomer and contains zinc as a metal ion.
- the obtained mixture of the ionomer resin pellets and dispersion b was supplied to a twin screw extruder set at 220 ° C. and kneaded (kneading step), and then extruded from a T die by a calender roll method. Molded into a 5 mm thick sheet (molding process). Thereby, a heat ray shielding film (hereinafter referred to as a heat ray shielding film K) was obtained.
- a heat ray shielding film K hereinafter referred to as a heat ray shielding film K
- the content of the composite tungsten oxide particles in the heat ray shielding film K per unit area in the projected area of the produced heat ray shielding film K is 1.2 g / m 2 .
- heat ray shielding matched transparent base material K a heat ray shielding laminated transparent base material (hereinafter referred to as heat ray shielding matched transparent base material K) was obtained in the same manner as in Example 1 except that the heat ray shielding film K produced in this example was used.
- the visible light transmittance was 72.0%
- the solar radiation transmittance was 36.1%.
- Example 12 Scotch tint (registered trademark) Nano90S (manufactured by 3M Co., hereinafter referred to as infrared reflective film a), which is an infrared reflective film, was attached to transparent float glass (3 mm thick).
- permeability is 89.2% and the reflection of the wavelength of 700 nm-1200 nm.
- the rate was a minimum of 8.2% and a maximum of 80.8%.
- the heat ray shielding film A produced in Example 1 was temporarily sandwiched between the transparent float glass (3 mm) and the transparent float glass to which the infrared reflection film was attached so that the infrared reflection film was in contact with the heat ray shielding film A.
- the heat ray shielding matching transparent base material (henceforth heat ray shielding matching transparent base material L) was obtained by performing the press process for 5 minutes under vacuum.
- the visible light transmittance was 70.8%
- the solar radiation transmittance was 31.1%.
- the mixture was supplied to a twin-screw extruder set at 210 ° C. and kneaded (kneading step), then extruded from a T-die and formed into a 0.5 mm thick sheet by a calender roll method (molding) Process).
- a heat ray shielding film hereinafter referred to as a heat ray shielding film ⁇
- the content of the composite tungsten oxide particles in the heat ray shielding film ⁇ per unit area in the projected area of the produced heat ray shielding film ⁇ is 1.2 g / m 2 .
- the total light transmittance of the heat ray shielding film ⁇ was measured and found to be 71.6%. After conducting a weather resistance test on the heat ray shielding film ⁇ in the same manner as in Example 1, the total light transmittance was measured again, and it was 75.0%. Therefore, the change in the total light transmittance before and after the weather resistance test was 3.4%. Further, as a result of visual confirmation, a decoloring phenomenon was observed in which the color of the composite tungsten oxide particles in the heat ray shielding film ⁇ was decolored after the weather resistance test was performed on the heat ray shielding film ⁇ . The results are shown in Table 1.
- heat ray shielding matched transparent base material ⁇ a heat ray shielding laminated transparent base material (hereinafter referred to as heat ray shielding matched transparent base material ⁇ ) was obtained in the same manner as in Example 1 except that the heat ray shielding film ⁇ produced in this comparative example was used.
- the visible light transmittance was 70.9%
- the solar radiation transmittance was 33.4%.
- the mixture was supplied to a twin screw extruder set at 220 ° C. and kneaded (kneading step), and then extruded from a T die and formed into a 0.5 mm thick sheet by a calender roll method (molding step). ). Thereby, a heat ray shielding film (hereinafter referred to as a heat ray shielding film ⁇ ) was obtained.
- the content of the composite tungsten oxide particles in the heat ray shielding film ⁇ per unit area in the projected area of the produced heat ray shielding film ⁇ is 1.2 g / m 2 .
- the total light transmittance of the heat ray shielding film ⁇ was measured and found to be 71.1%. After conducting a weather resistance test on the heat ray shielding film ⁇ in the same manner as in Example 1, the total light transmittance was measured again, and it was 87.9%. Therefore, the change in the total light transmittance before and after the weather resistance test was 16.8%. Further, as a result of visual confirmation, a decoloring phenomenon was observed in which the color of the composite tungsten oxide particles in the heat ray shielding film ⁇ was decolored after the weather resistance test was performed on the heat ray shielding film ⁇ . The results are shown in Table 1.
- heat ray shielding matched transparent base material ⁇ a heat ray shielding laminated transparent base material (hereinafter referred to as heat ray shielding matched transparent base material ⁇ ) was obtained in the same manner as in Example 1 except that the heat ray shielding film ⁇ produced in this comparative example was used.
- the visible light transmittance was 70.0%
- the solar radiation transmittance was 34.1%.
- the heat ray shielding films A to K of Examples 1 to 11 are all subjected to a weather resistance test in comparison with the heat ray shielding films ⁇ and ⁇ of Comparative Examples 1 and 2. It was confirmed that the change in the total light transmittance before and after was reduced. In Examples 1 to 11, it was confirmed that no decoloring phenomenon occurred even after the weather resistance test, but in Comparative Examples 1 and 2, it was confirmed that the decoloring phenomenon occurred.
- Comparative Example 1 since the composite tungsten oxide particles were dispersed in the polyvinyl butyral resin, the heat and moisture resistance was not sufficient, and a large change was observed in the light transmission characteristics of the composite tungsten oxide particles in the weather resistance test. It is thought that it was done.
- the heat ray shielding film contained in the heat ray shielding laminated transparent substrate exhibits high moisture and heat resistance by dispersing the composite tungsten oxide particles in the ionomer resin, and even after the weather resistance test. It was confirmed that no decoloring phenomenon (edge fade phenomenon) occurred. Therefore, it can be said that good heat shielding characteristics can be maintained for the heat ray shielding laminated transparent base materials of Examples 1 to 12 even after the weather resistance test.
- the decoloring phenomenon (edge fade phenomenon) refers to a phenomenon in which the color disappears from the unsealed end of the heat-shielding transparent substrate as described above.
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Abstract
Description
複合タングステン酸化物粒子と、
アイオノマー樹脂とを含有し、
前記複合タングステン酸化物粒子が、一般式MxWOy(但し、Mは、Cs、Rb、K、Tl、In、Ba、Li、Ca、Sr、Fe、Sn、Al、Cu、Naから選択される1種類以上の元素、0.1≦x≦0.5、2.2≦y≦3.0)で示される複合タングステン酸化物の粒子である熱線遮蔽膜を提供する。
(熱線遮蔽膜)
本実施形態ではまず、熱線遮蔽膜の一構成例について説明する。
本実施形態の熱線遮蔽膜に含まれる樹脂としてアイオノマー樹脂を用いることで耐候性が大幅に向上し、消色現象の発生を抑制できる理由は明らかではないが、構造中に金属イオンが均一に含有分布しているというアイオノマー樹脂の特徴によるものと考えられる。すなわち、アイオノマー樹脂は樹脂中にナトリウム、亜鉛といった金属イオンが陽イオンとして存在している。このため、複合タングステン酸化物中のドープ原子が陽イオンとして周囲の樹脂中に散逸しづらくなり、消色現象が生じにくくなったと推測される。
(1)複合タングステン酸化物粒子
複合タングステン酸化物粒子は上述のように、一般式MxWOy(但し、Mは、Cs、Rb、K、Tl、In、Ba、Li、Ca、Sr、Fe、Sn、Al、Cu、Naから選択される1種類以上の元素、0.1≦x≦0.5、2.2≦y≦3.0)で表記される複合タングステン酸化物の粒子を好ましく用いることができる。
熱線遮蔽膜の複合タングステン酸化物粒子の含有量は0.05g/m2以上5.0g/m2以下とすることが好ましく、0.1g/m2以上2.0g/m2以下とすることがより好ましい。
(2)アイオノマー樹脂
アイオノマー樹脂としては特に限定されるものではなく、公知のさまざまなアイオノマー樹脂を用いることができ、熱線遮蔽膜の使用用途等に応じて任意に樹脂を選択することができる。アイオノマー樹脂としては例えば、エチレン系アイオノマーや、スチレン系アイオノマー、アイオノマーエラストマー、パーフルオロカーボンアイオノマー、ウレタンアイオノマー等が知られており、上述のように用途や要求される性能等に応じて任意のアイオノマー樹脂を選択して用いることができる。また、熱線遮蔽膜に用いるアイオノマー樹脂は1種類のみとすることもできるが、2種類以上のアイオノマー樹脂を組み合わせて用いることもできる。
(3)その他の成分
本実施形態の熱線遮蔽膜には、上述した複合タングステン酸化物、及びアイオノマー樹脂以外にも、さらに任意の成分を添加することができる。任意に添加できる成分について以下に説明する。
熱線遮蔽膜中の紫外線吸収剤の含有率は特に限定されるものではなく、熱線遮蔽膜に要求される可視光透過率や、紫外線遮蔽能等に応じて任意に選択することができる。熱線遮蔽膜中の紫外線吸収剤の含有率は例えば、0.02質量%以上5.0質量%以下であることが好ましい。これは紫外線吸収剤の含有率が0.02質量%以上であれば、複合タングステン酸化物粒子で吸収しきれない紫外光を十分に吸収することができるためである。また含有率が5.0質量%以下であれば、熱線遮蔽膜中で紫外線吸収剤が析出することがなく、また膜の強度や接着力、耐貫通性に大きな影響を与えないためである。
(熱線遮蔽膜の製造方法)
次に本実施形態の熱線遮蔽膜の製造方法の一構成例について説明する。なお、本実施形態の熱線遮蔽膜の製造方法により上述の熱線遮蔽膜を好適に製造することができる。このため、以下に説明する点以外については上述の熱線遮蔽膜の場合と同様に構成することができるため、説明を省略する。
分散液製造工程で製造した分散液中の有機溶剤を除去することで固体の分散剤中に複合タングステン酸化物粒子が分散した状態の複合タングステン酸化物粒子分散体を製造する分散体製造工程。
分散体製造工程で得られた複合タングステン酸化物粒子分散体と、アイオノマー樹脂とを混練する混練工程。
複合タングステン酸化物粒子分散体とアイオノマー樹脂との混練物を成形する成形工程。 なお、分散体製造工程を実施することなく、分散液製造工程で製造した分散液を混練工程に供し、混練工程では、複合タングステン酸化物粒子分散液と、アイオノマー樹脂とを混練することもできる。この場合、混練工程により、アイオノマー樹脂中に複合タングステン酸化物粒子を均一に分散させるのと同時に、有機溶剤を除去することができる。ただし、多量の有機溶剤や気泡が熱線遮蔽膜に残留することを確実に防止する観点、および200℃を超える樹脂混練の高温に多量の有機溶剤が晒されることを防ぐ安全上の観点から、前記混練工程の前に前記分散体製造工程を実施することが好ましい。
(熱線遮蔽合わせ透明基材、熱線遮蔽合わせ透明基材の製造方法、自動車、建造物)
次に本実施形態の熱線遮蔽合わせ透明基材、及び熱線遮蔽合わせ透明基材の製造方法の一構成例について説明する。
(体積平均粒子径)
微粒子分散液中の複合タングステン酸化物粒子の体積平均粒子径は、マイクロトラック粒度分布計(日機装株式会社製 型式:UPA-UT)により測定を行った。
(全光線透過率)
得られた熱線遮蔽膜の全光線透過率は、ヘーズ・透過率計(株式会社村上色彩技術研究所製 型式:HM-150)を用いて、JIS K 7361-1に基づいて測定した。
(可視光透過率、日射透過率)
熱線遮蔽合わせ透明基材の可視光透過率、及び日射透過率は、分光光度計(株式会社日立製作所製 型式:U-4100)を用いて測定した200nm~2600nmの透過率から、JIS R 3106に基づいて算出した。
[実施例1]
複合タングステン酸化物粒子としてCs0.33WO3粒子(以下、粒子aと記載する)を20質量部、官能基としてアミンを含有する基とアクリル主鎖を有する分散剤(アミン価48mgKOH/g、分解温度250℃)(以下、分散剤aと記載する)を10質量部、有機溶剤であるメチルイソブチルケトン(沸点116.2℃)70質量部となるように秤量した。これらの原料を、0.3mmφZrO2ビーズを入れたペイントシェーカーに装填し、10時間粉砕・分散処理し、粒子aの分散液(以下、粒子分散液aと記載する)を得た(分散液製造工程)。
作製した熱線遮蔽膜Aを2枚の透明フロートガラス(3mm厚)で仮挟持したのち、130℃に熱し、真空下で5分間のプレス処理を施すことで熱線遮蔽合わせ透明基材(以下、熱線遮蔽合わせ透明基材Aと記載する)を得た。
[実施例3]
混練工程に供給する材料の比率を変更した点以外は実施例1と同様にして熱線遮蔽膜を作製した。
[実施例4]
アイオノマー樹脂のペレットとしてハイミラン1706に代えてIOTEK IONOMERS 4200(EXXON MOBIL CHEMICAL社製、表1中、エチレン系アイオノマー2と記載する。)を用いた点以外は実施例1と同様にして熱線遮蔽膜(以下、熱線遮蔽膜Dと記載する)を得た。IOTEK IONOMERS 4200はエチレン系アイオノマーであり金属イオンとして亜鉛を含有している。
[実施例5]
混練工程に供給する材料に紫外線吸収剤を添加するように変更した点以外は実施例1と同様にして熱線遮蔽膜を作製した。
[実施例6]
混練工程に供給する材料の組成を変更した点以外は実施例5と同様にして熱線遮蔽膜を作製した。
[実施例7]
混練工程に供給する材料の組成を変更した点以外は実施例5と同様にして熱線遮蔽膜を作製した。
[実施例8]
混練工程に供給する材料の組成を変更した点以外は実施例5と同様にして熱線遮蔽膜を作製した。
[実施例9]
混練工程に供給する材料の組成を変更した点以外は実施例1と同様にして熱線遮蔽膜を作製した。
[実施例10]
混練工程に供給する材料の組成を変更した点以外は実施例1と同様にして熱線遮蔽膜を作製した。
[実施例11]
複合タングステン酸化物粒子としてRb0.33WO3粒子(以下、粒子bと記載する)を20質量部、分散剤a10質量部、有機溶剤であるメチルイソブチルケトン70質量部を秤量した。これらの原料を、0.3mmφZrO2ビーズを入れたペイントシェーカーに装填し、11時間粉砕・分散処理し、粒子bの分散液(以下、粒子分散液bと記載する)を得た(分散液製造工程)。
[実施例12]
透明フロートガラス(3mm厚)に、赤外線反射フィルムであるスコッチティント(登録商標)Nano90S(3M社製。以下、赤外線反射フィルムaと記載する)を貼り付けた。なお、透明ガラス基材である透明フロートガラスに貼り付けた場合の赤外線反射フィルムaの光学特性を分光光度計で測定したところ、可視光透過率は89.2%、700nmから1200nmの波長の反射率は、最小8.2%、最高80.8%であった。
実施例1で作製した熱線遮蔽膜Aを、透明フロートガラス(3mm)と、前記赤外線反射フィルムを貼り付けた透明フロートガラスの間に、赤外線反射フィルムが熱線遮蔽膜Aに接するように仮挟持したのち、130℃に熱し、真空下で5分間のプレス処理を施すことで熱線遮蔽合わせ透明基材(以下、熱線遮蔽合わせ透明基材Lと記載する)を得た。
熱線遮蔽合わせ透明基材Lの光学特性を測定したところ、可視光透過率は70.8%、日射透過率は31.1%であった。
[比較例1]
混練工程に供給する材料の組成を変更した点以外は実施例1と同様にして熱線遮蔽膜を作製した。
[比較例2]
混練工程に供給する材料の組成を変更した点以外は実施例1と同様にして熱線遮蔽膜を作製した。
Claims (17)
- 複合タングステン酸化物粒子と、
アイオノマー樹脂とを含有し、
前記複合タングステン酸化物粒子が、一般式MxWOy(但し、Mは、Cs、Rb、K、Tl、In、Ba、Li、Ca、Sr、Fe、Sn、Al、Cu、Naから選択される1種類以上の元素、0.1≦x≦0.5、2.2≦y≦3.0)で示される複合タングステン酸化物の粒子である熱線遮蔽膜。 - 前記アイオノマー樹脂がエチレン系アイオノマーである請求項1に記載の熱線遮蔽膜。
- 前記アイオノマー樹脂が亜鉛、マグネシウム、リチウム、カリウム、ナトリウムから選択される1種類以上の金属イオンを含有する、請求項1または2に記載の熱線遮蔽膜。
- 前記複合タングステン酸化物を示す一般式MxWOyのMがCsおよび/またはRbである請求項1から3のいずれか1項に記載の熱線遮蔽膜。
- 前記複合タングステン酸化物が六方晶である請求項1から4のいずれか1項に記載の熱線遮蔽膜。
- 前記複合タングステン酸化物粒子の体積平均粒子径が100nm以下である請求項1から5のいずれか1項に記載の熱線遮蔽膜。
- 前記熱線遮蔽膜の投影面積における単位面積あたりの、前記熱線遮蔽膜の前記複合タングステン酸化物粒子の含有量は、0.05g/m2以上5.0g/m2以下である、請求項1から6のいずれか1項に記載の熱線遮蔽膜。
- さらに紫外線吸収剤を含有する請求項1から7のいずれか1項に記載の熱線遮蔽膜。
- 前記紫外線吸収剤が、ベンゾトリアゾール化合物、ベンゾフェノン化合物から選択される1種以上を含有する請求項8に記載の熱線遮蔽膜。
- 前記熱線遮蔽膜における前記紫外線吸収剤の含有率が、0.02質量%以上5.0質量%以下である請求項8から10のいずれか1項に記載の熱線遮蔽膜。
- 複数枚の透明基材と、
請求項1から11のいずれか1項に記載の熱線遮蔽膜とを有し、
前記熱線遮蔽膜が、前記複数枚の透明基材の間に配置されている熱線遮蔽合わせ透明基材。 - 前記複数枚の透明基材の内、少なくとも1枚がガラス基材である請求項12に記載の熱線遮蔽合わせ透明基材。
- 前記複数枚の透明基材の間に、さらに少なくとも一枚の赤外線反射フィルムが配置されている、請求項12または13に記載の熱線遮蔽合わせ透明基材。
- 前記赤外線反射フィルムは、前記赤外線反射フィルムを透明ガラス基材に貼り付けた場合に、700nmから1200nmの波長の光に対する反射率の最大値が30%以上100%以下である請求項14に記載の熱線遮蔽合わせ透明基材。
- 請求項12から15のいずれか1項に記載の熱線遮蔽合わせ透明基材を含む窓材を搭載した自動車。
- 請求項12から15のいずれか1項に記載の熱線遮蔽合わせ透明基材を含む窓材を備えた建造物。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201580042184.0A CN106661293B (zh) | 2014-08-06 | 2015-06-30 | 热射线遮蔽膜、热射线遮蔽用夹层透明基材、汽车、建造物 |
US15/501,472 US10875278B2 (en) | 2014-08-06 | 2015-06-30 | Heat ray shielding film, heat ray shielding laminated transparent base material, vehicle, and building |
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JP2021147295A (ja) * | 2020-03-23 | 2021-09-27 | 住友金属鉱山株式会社 | 熱線遮蔽合わせ透明基材 |
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EP3178882B1 (en) | 2021-03-10 |
JP6436170B2 (ja) | 2018-12-12 |
TW201617226A (zh) | 2016-05-16 |
US10875278B2 (en) | 2020-12-29 |
KR102326978B1 (ko) | 2021-11-16 |
CN106661293A (zh) | 2017-05-10 |
TWI686297B (zh) | 2020-03-01 |
JPWO2016021336A1 (ja) | 2017-05-25 |
US20170232714A1 (en) | 2017-08-17 |
CN106661293B (zh) | 2019-05-10 |
EP3178882A1 (en) | 2017-06-14 |
EP3178882A4 (en) | 2018-03-14 |
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