WO2025254007A1 - Unité de verre d'isolation thermique - Google Patents

Unité de verre d'isolation thermique

Info

Publication number
WO2025254007A1
WO2025254007A1 PCT/JP2025/019390 JP2025019390W WO2025254007A1 WO 2025254007 A1 WO2025254007 A1 WO 2025254007A1 JP 2025019390 W JP2025019390 W JP 2025019390W WO 2025254007 A1 WO2025254007 A1 WO 2025254007A1
Authority
WO
WIPO (PCT)
Prior art keywords
glass
glass layer
layer
insulated
glass unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/JP2025/019390
Other languages
English (en)
Japanese (ja)
Inventor
正雄 尾関
勇介 森嶋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AGC Inc
Original Assignee
Asahi Glass Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Publication of WO2025254007A1 publication Critical patent/WO2025254007A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • C03C27/06—Joining glass to glass by processes other than fusing
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/078—Glass compositions containing silica with 40% to 90% silica, by weight containing an oxide of a divalent metal, e.g. an oxide of zinc
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
    • C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
    • C03C3/087—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container glass
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/67—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light

Definitions

  • the present invention relates to an insulating glass unit.
  • IGUs Insulated Glass Units, hereafter also referred to as "insulating glass units" are used in a variety of applications, including buildings, automobiles, displays, and electrical appliances. Using insulating glass units in multi-pane windows in buildings and automobiles can improve the insulation of the interior of a building or automobile from the external environment.
  • Insulating glass units generally consist of two or more glass sheets hermetically sealed at their peripheral edges. The two or more glass sheets are spaced apart, and the space between the glass sheets is filled with an inert gas such as argon or krypton, or a mixture of inert gases. This configuration provides the insulating properties of the insulating glass unit.
  • an insulating glass unit with three glass sheets spaced apart and two spaces between them provides higher heat resistance than an insulating glass unit with two glass sheets and one space between them.
  • using three glass sheets poses the problem of increased cost, mass, and thickness.
  • insulating glass units have been proposed in which the glass sheets are adjusted to a predetermined thickness and thermal expansion coefficient (see, for example, Patent Document 1).
  • the present invention has been made to solve the above problems by providing an insulating glass unit that, in the event of breakage, is less likely to shatter glass fragments or the glass fragments are very small, thereby increasing safety for the user against injury.
  • the present invention relates to the following: 1. a first glass layer; a second glass layer; a third glass layer disposed between the first glass layer and the second glass layer; an insulating glass unit including: a first space defined between the first glass layer and the third glass layer; and a second space defined between the second glass layer and the third glass layer, an insulating glass unit comprising a shatterproof film on at least one major surface of the third glass layer; 2.
  • the insulated glass unit according to claim 1 wherein the shatterproof film has polyethylene terephthalate as a base material.
  • the insulated glass unit according to claim 1 or 2 wherein the thickness of the third glass layer is 0.4 mm to 2.0 mm. 4.
  • the insulated glass unit according to claim 1 or 2 wherein the thickness of the first glass layer and the second glass layer is 1.6 mm to 6.0 mm.
  • the third glass layer is a first shatterproof film provided on a main surface of the third glass layer facing the first space and in contact with the first space; 3.
  • the insulated glass unit according to claim 1 or 2 further comprising: a second shatterproof film provided on a main surface of the third glass layer facing the second space and in contact with the second space. 6.
  • the insulating glass unit according to claim 1 or 2 wherein the first glass layer, the second glass layer, and the third glass layer are made of soda-lime glass. 7.
  • the insulated glass unit according to claim 1 or 2 wherein at least one of the first glass layer and the second glass layer is physically strengthened glass.
  • the insulating glass unit according to claim 1 or 2 wherein at least one of the first space and the second space is filled with an insulating gas or a mixture of an insulating gas and air.
  • the insulating gas comprises at least one selected from nitrogen, helium, neon, argon, krypton, and xenon.
  • the thickness of the first shatterproof film is greater than the thickness of the second shatterproof film.
  • the strength of the first shatterproof film is greater than the strength of the second shatterproof film.
  • the first shatterproof film has a substrate and a first adhesive layer provided on a surface of the substrate facing the third glass layer
  • the second shatterproof film has a substrate and a second adhesive layer provided on a surface of the substrate facing the third glass layer, 6.
  • the insulated glass unit of claim 5 wherein the strength of the first adhesive layer is greater than the strength of the second adhesive layer.
  • 14. The insulated glass unit according to claim 1 or 2, wherein the first glass layer and the second glass layer have a glass composition different from that of the third glass layer. 15.
  • the glass fragments are less likely to scatter or are very small, thereby improving safety for the user against injury.
  • FIG. 1 is a cross-sectional view schematically illustrating an insulating glass unit according to a first embodiment.
  • FIG. 4 is a cross-sectional view schematically illustrating an insulating glass unit according to a second embodiment.
  • FIG. 10 is a cross-sectional view schematically illustrating an insulating glass unit according to a third embodiment.
  • FIG. 10 is a cross-sectional view schematically illustrating an insulating glass unit according to a fourth embodiment.
  • FIG. 1 is a cross-sectional view schematically illustrating an insulating glass unit 100 according to a first embodiment.
  • the insulating glass unit 100 of this embodiment includes a first glass layer 10, a second glass layer 20, and a third glass layer 30.
  • the first glass layer 10, the second glass layer 20, and the third glass layer 30 are each a sheet of glass having a predetermined thickness, such as a flat glass sheet or a glass sheet obtained by bending a flat sheet.
  • the sheet surface of the sheet of glass is referred to as a "main surface,” and this term will also be used in other embodiments described below.
  • the first glass layer 10, the second glass layer 20, and the third glass layer 30 are arranged with their main surfaces spaced apart and generally parallel to one another, and the third glass layer 30 is disposed between the first glass layer 10 and the second glass layer 20.
  • the peripheries of the first glass layer 10, the second glass layer 20, and the third glass layer 30 are hermetically sealed by a sealant 26 made of a polymeric seal such as silicone rubber or other sealing material.
  • the space defined between the first glass layer 10 and the third glass layer 30 is the first space 15, and the space defined between the second glass layer 20 and the third glass layer 30 is the second space 25.
  • a shatterproof film 24 is provided on the main surface of the third glass layer 30 facing the second glass layer 20.
  • the shatterproof film 24 has a base material and an adhesive layer (not shown), and is attached to the main surface of the third glass layer 30 by the adhesive layer.
  • the shatterproof film 24 adheres to glass fragments and prevents them from scattering when the insulating glass unit 100 is broken. This prevents injury to the user from glass fragments even if the insulating glass unit 100 is broken by impact. Furthermore, by providing the shatterproof film 24 on the third glass layer 30, which is located between the three glass layers in the insulating glass unit 100, scattering of glass fragments upon breakage can be prevented without physically strengthening the third glass layer 30. This allows the thickness of the third glass layer 30 to be reduced, leading to a thinner and lighter insulating glass unit 100.
  • the shatterproof film 24 adheres glass fragments and prevents them from scattering. Therefore, it is preferable that the shatterproof film 24 comply with ANSI Z97.1-2015, which defines the safety performance specifications and test methods for safety glass materials used in buildings. In particular, it is preferable that the film comply with Type 1 of ANSI Z97.1-2015, 5.1.4. Specifically, it is preferable that the film meet the following conditions: "The total weight of the peeled glass is equal to or less than 15.5 square inches of the original glass, and the weight of the largest piece of glass is equal to or less than 6.82 square inches of the original glass.
  • the thickness of the shatterproof film 24 is, for example, preferably 50 ⁇ m to 3200 ⁇ m, more preferably 50 ⁇ m to 2000 ⁇ m, even more preferably 50 ⁇ m to 1000 ⁇ m, still more preferably 50 ⁇ m to 250 ⁇ m, particularly preferably 70 ⁇ m to 220 ⁇ m, and most preferably 90 ⁇ m to 200 ⁇ m.
  • the glass compositions of the three glass layers, the first glass layer 10, the second glass layer 20, and the third glass layer 30, may be the same or different. It is preferable that the glass compositions of the first glass layer 10 and the second glass layer 20 are the same. In this case, it is preferable that the glass composition of the third glass layer 30 is different from those of the first glass layer 10 and the second glass layer 20.
  • the first glass layer 10 and the second glass layer 20, which are located on the outside of the three glass layers is made of physically strengthened glass (physically strengthened glass), and it is more preferable that both the first glass layer 10 and the second glass layer 20 are made of physically strengthened glass.
  • physically strengthened glass is broken by impact, it tends to break into fine glass fragments, making it less likely that sharp glass fragments will be generated. Therefore, using physically strengthened glass can reduce the risk of injury to the user from sharp glass fragments.
  • the glass sheet can be physically strengthened by rapidly cooling it from a high temperature near the softening point of the glass sheet. It is preferable that the insulating glass unit 100 uses such physically strengthened glass sheet for at least one of the first glass layer 10 and the second glass layer 20.
  • the third glass layer 30 has a larger thermal expansion coefficient than the first glass layer 10 and the second glass layer 20.
  • the thermal expansion coefficient of the third glass layer 30 is preferably 30 ⁇ 10 ⁇ 7 to 120 ⁇ 10 ⁇ 7 °C, more preferably 70 ⁇ 10 ⁇ 7 to 110 ⁇ 10 ⁇ 7 °C, and even more preferably 80 ⁇ 10 ⁇ 7 to 100 ⁇ 10 ⁇ 7 °C.
  • the absolute value of the difference between the thermal expansion coefficient of the first glass layer 10 or the second glass layer 20 and the thermal expansion coefficient of the third glass layer is preferably 1 ⁇ 10 ⁇ 7 to 20 ⁇ 10 ⁇ 7 ° C, more preferably 1 ⁇ 10 ⁇ 7 to 15 ⁇ 10 ⁇ 7 ° C, and even more preferably 2 ⁇ 10 ⁇ 7 to 5 ⁇ 10 ⁇ 7 ° C.
  • the thermal expansion coefficient of the glass layer is a value in the range of 50° C. to 350° C., and can be measured using a differential scanning calorimeter (DSC).
  • the thickness of each glass layer may be the same or different. It is preferable that the first glass layer 10 and the second glass layer 20 have approximately the same thickness, and that the third glass layer 30 has a smaller thickness.
  • the thicknesses of the first glass layer 10 and the second glass layer 20 are preferably 1.6 mm to 6.0 mm, more preferably 2.0 mm to 5.0 mm, and even more preferably 2.5 to 4.5 mm. Having a thickness of 1.6 mm or more for the first glass layer 10 and the second glass layer 20 provides sufficient thickness for physical strengthening, which makes it easier to achieve the effect of reducing injury to the user when the glass layer breaks. Having a thickness of 6.0 mm or less for the first glass layer 10 and the second glass layer 20 can reduce the weight of the insulating glass unit 100.
  • the thickness of the third glass layer 30 is preferably 0.4 mm to 2.0 mm, more preferably 0.5 mm to 1.6 mm, and even more preferably 0.6 mm to 1.3 mm.
  • the third glass layer 30 has a shatterproof film on at least one of its main surfaces, so the thickness can be 2.0 mm or less. This contributes to reducing the weight of the insulating glass unit 100.
  • having a thickness of 0.4 mm or more for the third glass layer 30 makes it less susceptible to breakage, contributing to preventing the insulating glass unit 100 from breaking.
  • the ratio expressed as "thickness of the third glass layer 30 / thickness of the first glass layer 10 (or thickness of the second glass layer 20)" is preferably 0.1 to 0.6, more preferably 0.15 to 0.5, and even more preferably 0.2 to 0.4.
  • a ratio of 0.1 or greater allows the third glass layer 30 to have a sufficient thickness, making the insulation unit 100 less likely to break.
  • a ratio of 0.6 or less allows the thickness of the third glass layer 30 to be relatively small, which is advantageous for reducing the size and weight of the insulation unit 100.
  • the first space 15 and the second space 25 is filled with a gas containing an insulating gas.
  • insulating gases include nitrogen, helium, neon, argon, krypton, and xenon. One of these may be used alone, or two or more may be used in combination.
  • the gas other than the insulating gas contained in the gas is, for example, air, or a mixed gas of an insulating gas and air may be used. It is preferable that both the first space 15 and the second space 25 are filled with gas, which can improve insulation. Note that when both the first space 15 and the second space 25 are filled with gas, the gas pressures in both spaces may be the same or different.
  • the thickness of the first space 15 and the second space 25 can be determined depending on the structure of the insulating glass unit 100, and is, for example, 6 mm to 16 mm, 8 mm to 14 mm, or 9 mm to 13 mm.
  • the thickness of the first space 15 and the second space 25 may be the same or different.
  • the overall thickness of the insulating glass unit 100 is the sum of the thicknesses of all the glass layers and the thickness of the spaces between the glass layers, and is approximately 60 mm or less, approximately 56 mm or less, approximately 54 mm or less, approximately 50 mm or less, approximately 40 mm or less, approximately 30 mm or less, approximately 26 mm or less, etc.
  • Second Embodiment 2 is a cross-sectional view schematically illustrating an insulating glass unit 200 according to a second embodiment.
  • the insulating glass unit 200 differs from the insulating glass unit 100 according to the first embodiment in that shatterproof films are provided on both sides of the third glass layer 30.
  • the other configuration is similar to that of the insulating glass unit 100 according to the first embodiment. Therefore, the same reference numerals are used to designate components common to the insulating glass unit 100 according to the first embodiment, and detailed descriptions thereof will be omitted.
  • the insulating glass unit 200 of the second embodiment comprises a first shatterproof film 28 and a second shatterproof film 24.
  • the first shatterproof film 28 is provided on the main surface of the third glass layer 30 facing the first space 15 and is in contact with the first space 15.
  • the second shatterproof film 24 is provided on the main surface of the third glass layer 30 facing the second space 25 and is in contact with the second space 25.
  • the first shatterproof film 28 and the second shatterproof film 24 are attached to the glass layers by a first adhesive layer and a second adhesive layer (not shown), respectively.
  • the insulating glass unit 200 of the second embodiment has shatterproof films on both sides of the third glass layer 30, which prevents glass fragments from scattering when the unit is broken and also prevents warping of the third glass layer 30.
  • the thermal expansion coefficients of the first shatterproof film 28 and the second shatterproof film 24 be close to that of the third glass layer 30.
  • the thermal expansion coefficient of the first shatterproof film 28 be greater than the thermal expansion coefficient of the second shatterproof film 24.
  • the difference in the thermal expansion coefficients of the first shatterproof film 28 and the second shatterproof film 24 further suppresses warping of the third glass layer 30 due to temperature changes, which in turn suppresses breakage of the third glass layer 30.
  • the film thickness of the first shatterproof film 28 be greater than the film thickness of the second shatterproof film 24. This makes it possible to deflect the scattering of glass fragments toward the thinner shatterproof film 24 when the glass layer is broken and the fragments are scattered. Therefore, for example, when incorporating the insulating glass unit 100 into a building or automobile, the deflection of glass fragments can be controlled and safety can be improved by positioning the insulating glass unit 100 with consideration given to the deflection of glass fragments scattering.
  • the thickness of the first shatterproof film 28 is preferably 110 ⁇ m to 250 ⁇ m, more preferably 120 ⁇ m to 230 ⁇ m, and even more preferably 150 ⁇ m to 210 ⁇ m
  • the thickness of the second shatterproof film 24 is preferably 50 ⁇ m to 100 ⁇ m, more preferably 60 ⁇ m to 90 ⁇ m, and even more preferably 60 ⁇ m to 80 ⁇ m.
  • the strength of the first shatterproof film 28 be greater than the strength of the second shatterproof film 24.
  • the strength of the first adhesive layer be greater than the strength of the second adhesive layer.
  • the strength of the shatterproof film can be evaluated, for example, by tensile strength measured using a tensile tester.
  • the strength of the adhesive layer can be evaluated by strength measured in accordance with JIS A 5759 2016.
  • the tensile strength of the first shatterproof film 28 is preferably 100N to 1200N, more preferably 120N to 1100N, and even more preferably 150N to 800N.
  • the tensile strength of the second shatterproof film 24 is preferably 100N to 1200N, more preferably 120N to 1100N, and even more preferably 150N to 800N.
  • the adhesive strength of the first adhesive layer is preferably 10N to 40N, more preferably 12N to 35N, and even more preferably 13N to 30N.
  • the adhesive strength of the second adhesive layer is preferably 10N to 40N, more preferably 12N to 35N, and even more preferably 13N to 30N.
  • FIG. 3 is a cross-sectional view schematically illustrating an insulating glass unit 300 according to a third embodiment.
  • the insulating glass unit 300 differs from the insulating glass unit 100 according to the first embodiment in that the third glass layer 30 has a shatterproof film 24 on the main surface thereof facing the second glass layer 20, and the first glass layer 10 has a shatterproof film 22 on the main surface thereof facing the third glass layer 30.
  • the other configurations are the same as those of the insulating glass unit 100 according to the first embodiment. Therefore, the same reference numerals are used to designate components common to the insulating glass unit 100 according to the first embodiment, and detailed descriptions thereof will be omitted.
  • the first glass layer 10 and the third glass layer 30 are equipped with shatterproof film, while the second glass layer 20 is not equipped with a shatterproof film. Therefore, it is preferable to use physically strengthened glass for the second glass layer 20. This makes it possible to prevent glass fragments from scattering or to prevent the generation of sharp glass fragments, even if the insulating glass unit 300 is broken.
  • (Fourth embodiment) 4 is a cross-sectional view schematically illustrating an insulating glass unit 400 of the fourth embodiment.
  • the insulating glass unit 300 is different from the insulating glass unit 100 of the first embodiment in that the first glass layer 10 has a shatterproof film 22 on the main surface facing the third glass layer 30, the second glass layer 20 has a shatterproof film 23 on the main surface facing the third glass layer 30, and the third glass layer 30 does not have a shatterproof film.
  • the other configuration is the same as that of the insulating glass unit 100 of the first embodiment. Therefore, the same reference numerals are used to designate components common to the insulating glass unit 100 of the first embodiment, and detailed description thereof will be omitted.
  • the first glass layer 10 and the second glass layer 20 are equipped with shatterproof films, and either glass layer may or may not be physically strengthened. Even if the insulating glass unit 400 is broken, the shatterproof films prevent glass fragments from the first glass layer 10 and the second glass layer 20 from scattering. Furthermore, the two shatterproof films make it easy to confine glass fragments from the third glass layer 30 in the space between the first glass layer 10 and the second glass layer 20, thereby preventing glass fragments from scattering.
  • the shatterproof film 24 of the insulating glass unit 100 of the first embodiment described above has a resin substrate and an adhesive layer provided on one surface of the resin substrate.
  • resin substrates include acrylic, polycarbonate, styrene, polyester, polyolefin, hydrogenated cyclic resin, fluorine-based, silicone, and urethane-based resins.
  • the resin substrate is preferably a polyester-based resin, and more preferably a polyethylene terephthalate (PET) resin.
  • the adhesive layer is formed from a coating composition containing an acrylic polymer as the base polymer.
  • the coating composition is applied to one surface of the substrate using a coater such as a die coater or spray coater, or by roller coating, dip coating, etc., and then dried at a temperature of, for example, about 40°C to 60°C, to obtain the adhesive layer.
  • acrylic polymer refers to a polymer of monomer components containing at least one monomer selected from the group consisting of a monomer having at least one (meth)acryloyl group in one molecule and (meth)acrylonitrile.
  • monomers having at least one (meth)acryloyl group in one molecule and (meth)acrylonitrile are collectively referred to as "acrylic monomers.”
  • An acrylic polymer is defined as a polymer containing monomer units derived from acrylic monomers.
  • a typical example of an acrylic polymer is a polymer in which the proportion of acrylic monomers in the monomer components constituting the acrylic polymer is greater than 50% by mass (preferably greater than 70% by mass, for example greater than 90% by mass).
  • the adhesive layer can be formed using, for example, a coating composition containing an acrylic polymer as a base polymer, as disclosed in Japanese Patent Application Laid-Open No. 2022-176898.
  • the shatterproof film 24 may further have a hard coat layer on the surface of the substrate opposite the adhesive layer, which is obtained by curing an active energy ray-curable resin such as an acrylic resin, silicone resin, urethane resin, olefin resin, or ester resin.
  • the hard coat layer can impart hardness and scratch resistance to the surface of the shatterproof film.
  • “shatterproof film” refers to a film that prevents glass or other fragile materials from scattering when broken. Specifically, it refers to a film that meets the standards for Organic Coated Glazing Type 1 in the impact test specified in ASNSI Z97.1-2015.
  • the first glass layer 10, the second glass layer 20, and the third glass layer 30 are made of soda-lime glass, alkaline earth aluminoborosilicate glass, alkali-free aluminoborosilicate glass, or the like, and soda-lime glass is preferred in terms of ease of processing.
  • the soda-lime glass constituting the first glass layer 10, the second glass layer 20, and the third glass layer 30 preferably contains, in mass percentages based on oxides, 65 to 74% SiO2 , 0 to 8.6% Al2O3 , 3.3 to 6% MgO, 6.5 to 9% CaO, 13 to 16% Na2O , 0 to 1% K2O , 0 to 0.2% TiO2 , 0 to 0.15% Fe2O3 , and 0 to 0.4 % SO3 (hereinafter also referred to as "glass A"). Glass A with the above composition has sufficient strength to constitute an insulating glass unit, and its thermal expansion coefficient is easily controlled.
  • SiO2 is known as a component that forms a network structure in the glass microstructure and is a major component constituting glass.
  • the SiO2 content is preferably 65% or more, more preferably 66% or more, even more preferably 66.5% or more, and particularly preferably 67% or more.
  • the SiO2 content is preferably 74% or less, more preferably 72% or less, even more preferably 71.5% or less, and particularly preferably 71% or less.
  • An SiO2 content of 65% or more is advantageous in terms of stability and weather resistance as glass.
  • an SiO2 content of 72% or less is advantageous in terms of meltability and formability.
  • Al 2 O 3 is a component that improves the weather resistance of glass. Furthermore, when glass is shaped by the float method, Al 2 O 3 has the effect of suppressing the penetration of tin from the bottom surface during float forming. Furthermore, Al 2 O 3 has the effect of promoting dealkalization when SO 2 treatment is performed.
  • the content of Al 2 O 3 in Glass A is preferably 0% or more, more preferably 1.0% or more, even more preferably 3.8% or more, and particularly preferably 4.2% or more.
  • the content of Al 2 O 3 is preferably 8.6% or less, more preferably 8.0% or less, even more preferably 7.5% or less, and particularly preferably 7.0% or less.
  • An Al 2 O 3 content of 1.0% or more can improve weather resistance.
  • An Al 2 O 3 content of 8.6% or less suppresses an increase in devitrification temperature even when the viscosity of the glass is high, which is advantageous in terms of melting and forming in a soda-lime glass production line.
  • Al 2 O 3 and Na 2 O Focusing on the two components Al 2 O 3 and Na 2 O, they have opposing effects on high-temperature viscosity, devitrification temperature, and the amount of tin penetration from the bottom surface.
  • Al 2 O 3 and Na 2 O are preferably contained in a specific ratio, and from the viewpoint of reducing the amount of tin penetration during float forming, Na 2 O/Al 2 O 3 is preferably 5 or less, more preferably 4.5 or less, and even more preferably 4 or less.
  • Na 2 O/Al 2 O 3 is preferably 1.8 or more, preferably 2 or more, and more preferably 2.4 or more.
  • the ratio of ( Na2O + K2O )/ Al2O3 is preferably 2.2 or more, more preferably 2.3 or more, and even more preferably 2.4 or more. Furthermore, from the viewpoint of suppressing increases in high-temperature viscosity and devitrification temperature, the ratio of ( Na2O + K2O )/ Al2O3 is preferably 4 or less, more preferably 3.5 or less, and even more preferably 3 or less.
  • MgO is an essential component that stabilizes the glass.
  • the MgO content is preferably 3.3% or more, more preferably 3.6% or more, and even more preferably 3.9% or more.
  • the MgO content is preferably 6% or less, more preferably 5.7% or less, and even more preferably 5.4% or less.
  • the MgO content is 3.3% or more, the melting properties at high temperatures are improved and devitrification is less likely to occur.
  • the MgO content is 6% or less, the resistance to devitrification is maintained and a sufficient ion exchange rate is obtained.
  • CaO is an essential component that stabilizes the glass.
  • the CaO content is preferably 6.5% or more, more preferably 6.7% or more, and even more preferably 6.9% or more.
  • the CaO content is preferably 9.0% or less, more preferably 8.5% or less, and even more preferably 8.2% or less.
  • the CaO content is 6.5% or more, the meltability at high temperatures is improved and devitrification is less likely to occur.
  • the CaO content is 9.0% or less, the high-temperature viscosity does not decrease too much, making it easier to maintain a high liquidus viscosity.
  • Na 2 O is a component that reduces the high-temperature viscosity and devitrification temperature of glass and improves the meltability and formability of glass.
  • Na 2 O is a component that generates non-bridged oxygen (NBO), which reduces fluctuations in chemical strengthening properties when the water content in glass changes.
  • the Na 2 O content is preferably 13% or more, more preferably 13.4% or more, and even more preferably 13.8% or more.
  • the Na 2 O content is preferably 16% or less, more preferably 15.6% or less, and even more preferably 15.2% or less.
  • a desired surface compressive stress layer can be formed by ion exchange, and fluctuations due to changes in water content can be suppressed.
  • the Na 2 O content is 16% or less, sufficient weather resistance can be obtained and the amount of tin penetration from the bottom surface during float forming can be suppressed.
  • K 2 O is a component that increases non-bridging oxygen and lowers the softening point, but if it is too much, it becomes difficult to ensure a high liquidus viscosity.
  • K 2 O is contained, it is preferably 1.0% or less, more preferably 0.8% or less, and even more preferably 0.6% or less.
  • a small amount of K 2 O has the effect of suppressing the penetration of tin from the bottom surface during float forming, so it is preferable to contain it during float forming.
  • the content of K 2 O is preferably 0.05% or more, more preferably 0.1% or more.
  • Al 2 O 3 is a component that increases high-temperature viscosity and devitrification temperature, while Na 2 O and K 2 O are components that decrease high-temperature viscosity and devitrification temperature. Furthermore, Al 2 O 3 is a component that decreases non-bridging oxygen, while Na 2 O and K 2 O are components that increase it. These are preferable for stable production of glass, sufficient narrowing, and obtaining stable chemical strengthening properties against changes in water content.
  • TiO2 is present in large amounts in natural raw materials and is a source of yellow coloring.
  • the TiO2 content is preferably 0.2% or less, more preferably 0.13% or less, and even more preferably 0.1% or less. By keeping the TiO2 content at 0.2% or less, it is possible to prevent the glass from becoming yellowish.
  • Fe2O3 is a component that exists everywhere in nature and on production lines, and it is difficult to reduce its content to zero. Oxidized Fe2O3 causes yellow coloration, while reduced FeO causes blue coloration, and the balance between the two causes the glass to be green. When Fe2O is contained, it is preferably 0% or more, more preferably 0.01% or more, even more preferably 0.03% or more, and particularly preferably 0.05% or more. From the viewpoint of suppressing coloration, Fe2O is preferably 0.15% or less, more preferably 0.12% or less, and even more preferably 0.10% or less.
  • SO3 is a fining agent for glass melting.
  • the content in glass is less than half of the amount added from the raw materials.
  • glass A contains SO3 , its content is preferably 0% or more, more preferably 0.02% or more, even more preferably 0.05% or more, and particularly preferably 0.1% or more.
  • the SO3 content is preferably 0.4% or less, more preferably 0.35% or less, and even more preferably 0.3% or less.
  • the SO3 content is 0.02% or more, sufficient fining can be achieved and bubble defects can be suppressed.
  • the SO3 content is 0.4% or less, defects caused by sodium sulfate that occur in the glass can be suppressed.
  • chlorides, fluorides, etc. may be appropriately contained as fining agents for the glass melt.
  • the glass of the present invention essentially consists of the components described above, but may contain other components as long as the purpose of the present invention is not impaired. If such components are contained, the total content of these components is preferably 5% or less, more preferably 3% or less, and typically 1% or less.
  • Glass A can be produced by known glass forming methods such as the float process, fusion process, and slot downdraw process. When produced by the float process, Glass A has the advantage that its properties change little even when it comes into contact with molten tin.
  • both the first glass layer 10 and the second glass layer 20 are made of glass (hereinafter also referred to as "glass B" ) that contains, expressed in mass percentage on an oxide basis, 70 to 74% of SiO2 , 0 to 3.0% of Al2O3 , 3.3 to 6% of MgO, 6.5 to 9% of CaO , 13 to 16% of Na2O , 0 to 1% of K2O , 0 to 0.2% of TiO2 , 0 to 0.15% of Fe2O3 , and 0 to 0.4% of SO3 from glass A.
  • glass B glass
  • the third glass layer 30 is preferably made of glass (hereinafter also referred to as "glass C") that contains, expressed as oxide-based mass percentages, 65 to 72% SiO2 and 3.4 to 8.6% Al2O3 of glass A. Combining glass B and glass C makes it easier to make the thermal expansion coefficient of the third glass layer 30 larger than the thermal expansion coefficients of the first glass layer 10 and the second glass layer 20, thereby making the insulating glass unit 100 less likely to break.
  • glass C glass that contains, expressed as oxide-based mass percentages, 65 to 72% SiO2 and 3.4 to 8.6% Al2O3 of glass A.
  • the absolute value of the difference in Na 2 O content between the first glass layer 10 and the second glass layer 20 and the third glass layer 30, calculated in terms of mass percentage based on oxide is preferably 0.5 to 10 mass%, more preferably 0.7 to 8 mass%, and even more preferably 0.9 to 7 mass%.
  • the sum of the absolute value of the difference in the Na 2 O content and the absolute value of the difference in the SiO 2 content between the first glass layer 10 and the second glass layer 20 and the third glass layer 30, calculated in terms of mass percentage based on oxide is preferably 1.0 mass % to 15 mass %, more preferably 1.5 to 12 mass %, and even more preferably 2.0 to 10 mass %.
  • the absolute value of the difference in the Al 2 O 3 content, calculated as a mass percentage on an oxide basis, between the first glass layer 10, the second glass layer 20, and the third glass layer 30 is preferably 0.5 to 8.6%, more preferably 0.6 to 8.5%, and even more preferably 1.0 to 8.0%.
  • the absolute value of the difference in the SiO 2 content, calculated as a mass percentage on an oxide basis between the first glass layer 10, the second glass layer 20, and the third glass layer 30 is preferably 1.0 to 9.0%, more preferably 1.5 to 8.5%, and even more preferably 2.0 to 8.0%.
  • the insulating glass unit may have four or more glass layers.
  • the preferred aspects of the outer two glass layers are the same as those of the first and second glass layers, respectively.
  • at least one of the glass layers located between the two outer glass layers may be provided with a shatterproof film, and two or more glass layers may be provided with a shatterproof film.
  • the glass layer located between the two outer glass layers preferably has the same aspect as the third glass layer in the above embodiment, and the preferred aspect of the shatterproof film is also the same as that of the shatterproof film provided on the main surface of the third glass layer.
  • the insulating glass units of the above-described embodiments are highly safe for users because, if broken, they are less likely to shatter or the glass fragments are small, making them suitable for a variety of applications, including windows, doors, or skylights in buildings, windows in automobiles and other vehicles, windows or display panels in electrical appliances, and display panels in electronic devices.
  • the insulated glass unit according to claim 1 or 2 wherein the thickness of the third glass layer is 0.4 mm to 2.0 mm. 4.
  • the third glass layer is a first shatterproof film provided on a main surface of the third glass layer facing the first space and in contact with the first space; 5.
  • the insulated glass unit according to any one of 1 to 4 further comprising: a second shatterproof film provided on a main surface of the third glass layer facing the second space and in contact with the second space. 6.
  • the insulating gas comprises at least one selected from nitrogen, helium, neon, argon, krypton, and xenon.
  • the first shatterproof film has a substrate and a first adhesive layer provided on a surface of the substrate facing the third glass layer
  • the second shatterproof film has a substrate and a second adhesive layer provided on a surface of the substrate facing the third glass layer, 13.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Civil Engineering (AREA)
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  • Glass Compositions (AREA)

Abstract

La présente invention concerne une unité de verre d'isolation thermique qui est améliorée en termes de sécurité contre les blessures d'un utilisateur puisque des fragments de verre ne sont pas susceptibles de se disperser ou que des fragments de verre sont fins dans les cas où l'unité de verre d'isolation thermique est brisée. L'invention concerne une unité de verre d'isolation thermique qui comprend une première couche de verre, une deuxième couche de verre, une troisième couche de verre qui est disposée entre les première et deuxième couches de verre, un premier espace qui est défini entre la première couche de verre et la troisième couche de verre, et un second espace qui est défini entre la deuxième couche de verre et la troisième couche de verre. L'unité de verre d'isolation thermique comporte un film de prévention de dispersion sur au moins une surface principale de la troisième couche de verre.
PCT/JP2025/019390 2024-06-05 2025-05-28 Unité de verre d'isolation thermique Pending WO2025254007A1 (fr)

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JP2024-091424 2024-06-05

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH061640A (ja) * 1992-06-19 1994-01-11 Nippon Electric Glass Co Ltd 耐火性ガラスパネル
JPH0967147A (ja) * 1995-08-31 1997-03-11 Natl House Ind Co Ltd ペアガラス
JP2009114036A (ja) * 2007-11-08 2009-05-28 Sukefumi Ito 複層ガラス板およびそれを用いたガラス閉鎖部材
JP2014527499A (ja) * 2011-07-04 2014-10-16 エージーシー グラス ユーロップ 高エネルギー透過率を持つフロートガラス板
WO2014196407A1 (fr) * 2013-06-06 2014-12-11 旭硝子株式会社 Verre pour renforcement chimique, verre chimiquement renforcé et procédé de production de verre chimiquement renforcé
WO2015088009A1 (fr) * 2013-12-13 2015-06-18 旭硝子株式会社 Verre pour trempe chimique, verre chimiquement trempé et procédé de production de verre chimiquement trempé
JP2015522498A (ja) * 2012-04-04 2015-08-06 エージーシー グラス ユーロップ 高エネルギー透過率を持つガラス板
WO2018101475A1 (fr) * 2016-12-01 2018-06-07 大日本印刷株式会社 Kit d'assemblage pour fenêtre multicouches, structure de fenêtre multicouches, dispositif de régulation de la lumière, bâtiment, kit de régulation de la lumière, fenêtre, véhicule et procédé de production de fenêtre multicouches
JP2018104207A (ja) * 2016-12-22 2018-07-05 Ykk Ap株式会社 多層ガラス
JP2018123028A (ja) * 2017-02-01 2018-08-09 大日本印刷株式会社 窓ガラスの製造方法および飛散防止フィルムの製造方法
JP2018528918A (ja) * 2015-07-30 2018-10-04 コーニング インコーポレイテッド 熱強化された建築用ガラスおよびその関連するシステムと方法

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH061640A (ja) * 1992-06-19 1994-01-11 Nippon Electric Glass Co Ltd 耐火性ガラスパネル
JPH0967147A (ja) * 1995-08-31 1997-03-11 Natl House Ind Co Ltd ペアガラス
JP2009114036A (ja) * 2007-11-08 2009-05-28 Sukefumi Ito 複層ガラス板およびそれを用いたガラス閉鎖部材
JP2014527499A (ja) * 2011-07-04 2014-10-16 エージーシー グラス ユーロップ 高エネルギー透過率を持つフロートガラス板
JP2015522498A (ja) * 2012-04-04 2015-08-06 エージーシー グラス ユーロップ 高エネルギー透過率を持つガラス板
WO2014196407A1 (fr) * 2013-06-06 2014-12-11 旭硝子株式会社 Verre pour renforcement chimique, verre chimiquement renforcé et procédé de production de verre chimiquement renforcé
WO2015088009A1 (fr) * 2013-12-13 2015-06-18 旭硝子株式会社 Verre pour trempe chimique, verre chimiquement trempé et procédé de production de verre chimiquement trempé
JP2018528918A (ja) * 2015-07-30 2018-10-04 コーニング インコーポレイテッド 熱強化された建築用ガラスおよびその関連するシステムと方法
WO2018101475A1 (fr) * 2016-12-01 2018-06-07 大日本印刷株式会社 Kit d'assemblage pour fenêtre multicouches, structure de fenêtre multicouches, dispositif de régulation de la lumière, bâtiment, kit de régulation de la lumière, fenêtre, véhicule et procédé de production de fenêtre multicouches
JP2018104207A (ja) * 2016-12-22 2018-07-05 Ykk Ap株式会社 多層ガラス
JP2018123028A (ja) * 2017-02-01 2018-08-09 大日本印刷株式会社 窓ガラスの製造方法および飛散防止フィルムの製造方法

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