WO2013131667A1 - Scheibe mit wärmestrahlung reflektierender beschichtung - Google Patents
Scheibe mit wärmestrahlung reflektierender beschichtung Download PDFInfo
- Publication number
- WO2013131667A1 WO2013131667A1 PCT/EP2013/050698 EP2013050698W WO2013131667A1 WO 2013131667 A1 WO2013131667 A1 WO 2013131667A1 EP 2013050698 W EP2013050698 W EP 2013050698W WO 2013131667 A1 WO2013131667 A1 WO 2013131667A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- substrate
- layer
- coating
- barrier layer
- disc
- Prior art date
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 148
- 239000011248 coating agent Substances 0.000 title claims abstract description 140
- 230000005855 radiation Effects 0.000 title claims abstract description 43
- 239000010410 layer Substances 0.000 claims abstract description 170
- 239000000758 substrate Substances 0.000 claims abstract description 113
- 230000004888 barrier function Effects 0.000 claims abstract description 74
- 239000002346 layers by function Substances 0.000 claims abstract description 68
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000001301 oxygen Substances 0.000 claims abstract description 37
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 37
- 238000009792 diffusion process Methods 0.000 claims abstract description 5
- 230000001105 regulatory effect Effects 0.000 claims abstract description 3
- 230000005540 biological transmission Effects 0.000 claims description 41
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 38
- 239000002131 composite material Substances 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 29
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- 239000004416 thermosoftening plastic Substances 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 18
- 239000000377 silicon dioxide Substances 0.000 claims description 18
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 14
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 14
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 9
- 229910052796 boron Inorganic materials 0.000 claims description 9
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 8
- 229910052726 zirconium Inorganic materials 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 6
- 150000004767 nitrides Chemical class 0.000 claims description 6
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 6
- 229910001887 tin oxide Inorganic materials 0.000 claims description 6
- 230000000475 sunscreen effect Effects 0.000 claims description 5
- 239000000516 sunscreening agent Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005452 bending Methods 0.000 description 19
- 238000005260 corrosion Methods 0.000 description 18
- 230000007797 corrosion Effects 0.000 description 18
- 238000004544 sputter deposition Methods 0.000 description 17
- 238000000151 deposition Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 13
- 238000012360 testing method Methods 0.000 description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 229910052710 silicon Inorganic materials 0.000 description 10
- 239000010703 silicon Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 235000012239 silicon dioxide Nutrition 0.000 description 9
- 229910004298 SiO 2 Inorganic materials 0.000 description 8
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 8
- 238000007792 addition Methods 0.000 description 8
- 230000008021 deposition Effects 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 230000032900 absorption of visible light Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- -1 polyethylene Polymers 0.000 description 5
- 239000012495 reaction gas Substances 0.000 description 5
- 230000001419 dependent effect Effects 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 239000005361 soda-lime glass Substances 0.000 description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 4
- 239000011787 zinc oxide Substances 0.000 description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 229910010413 TiO 2 Inorganic materials 0.000 description 3
- 229910007717 ZnSnO Inorganic materials 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000002019 doping agent Substances 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 229910006404 SnO 2 Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000005388 borosilicate glass Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000005357 flat glass Substances 0.000 description 2
- 239000005329 float glass Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910003437 indium oxide Inorganic materials 0.000 description 2
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
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- 229920001155 polypropylene Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000037072 sun protection Effects 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000003667 anti-reflective effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000006059 cover glass Substances 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- NJWNEWQMQCGRDO-UHFFFAOYSA-N indium zinc Chemical compound [Zn].[In] NJWNEWQMQCGRDO-UHFFFAOYSA-N 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 1
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- 230000009467 reduction Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 239000005336 safety glass Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 229940071182 stannate Drugs 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- BNEMLSQAJOPTGK-UHFFFAOYSA-N zinc;dioxido(oxo)tin Chemical compound [Zn+2].[O-][Sn]([O-])=O BNEMLSQAJOPTGK-UHFFFAOYSA-N 0.000 description 1
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
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/22—Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
- C03C17/23—Oxides
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/208—Filters for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J1/00—Windows; Windscreens; Accessories therefor
-
- 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
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/3411—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials
- C03C17/3429—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials at least one of the coatings being a non-oxide coating
- C03C17/3435—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials at least one of the coatings being a non-oxide coating comprising a nitride, oxynitride, boronitride or carbonitride
-
- 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
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/3411—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials
- C03C17/3429—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials at least one of the coatings being a non-oxide coating
- C03C17/3447—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials at least one of the coatings being a non-oxide coating comprising a halide
- C03C17/3452—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials at least one of the coatings being a non-oxide coating comprising a halide comprising a fluoride
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/26—Reflecting filters
-
- 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
- C03C2217/00—Coatings on glass
- C03C2217/70—Properties of coatings
- C03C2217/78—Coatings specially designed to be durable, e.g. scratch-resistant
-
- 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
- C03C2217/00—Coatings on glass
- C03C2217/90—Other aspects of coatings
- C03C2217/94—Transparent conductive oxide layers [TCO] being part of a multilayer coating
-
- 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
- C03C2217/00—Coatings on glass
- C03C2217/90—Other aspects of coatings
- C03C2217/94—Transparent conductive oxide layers [TCO] being part of a multilayer coating
- C03C2217/948—Layers comprising indium tin oxide [ITO]
Definitions
- the invention relates to a disk with heat radiation reflecting coating, a process for their preparation and their use.
- the interior of a motor vehicle can become very hot in summer at high ambient temperatures and intense direct sunlight. If the outside temperature is lower than the temperature in the vehicle interior, which occurs especially in winter, then a cold disk acts as a heat sink, which is perceived as uncomfortable by the occupants. Also, a high heating power of the air conditioning system must be provided in order to avoid a cooling of the interior via the vehicle windows.
- Thermal radiation reflective coatings are known. Such a coating reflects a considerable part of the solar radiation, in particular in the infrared range, which leads in summer to a reduced heating of the vehicle interior.
- the coating also reduces the emission of long-wave thermal radiation of a heated disc into the vehicle interior when the coating is applied to the surface of a disc facing the vehicle interior.
- Such a coating also reduces the emission of heat from the interior to the outside environment at low outside temperatures in winter.
- a thermal radiation reflective coating may include functional layers of niobium, tantalum or zirconium. Such coatings are known, for example, from US 201 10146172 A1, EP 1 218 307 B1 and EP 2 247 549 A2. Such coatings cause the transmission of the disc in the visible spectral range is significantly reduced. The coatings therefore can not be used on panes for which legal requirements regarding transmission must be complied with, for example windshields or front side windows. Thermal radiation-reflecting coatings with functional layers of silver are also known, for example from EP 877 006 B1, EP 1 047 644 B1 and EP 1 917 222 B1. However, such coatings are susceptible to corrosion and not sufficiently mechanically resistant. The coatings therefore can not be used on the vehicle interior Surface of a disc are applied, where the coating is exposed to the air and other environmental influences.
- the object of the present invention is to provide an improved disk with heat radiation reflective coating and a method for its production.
- the coating should be transparent and resistant to corrosion and should not be damaged during bending and pretensioning of the pane.
- the disc according to the invention comprises at least one substrate and at least one heat radiation-reflecting coating on at least one surface of the substrate, wherein the coating on the substrate at least
- a dielectric barrier layer for regulating oxygen diffusion
- the barrier layer comprises an anti-reflection layer
- barrier layer has a thickness of 10 nm to 40 nm.
- first layer is arranged above a second layer, this means in the sense of the invention that the first layer is arranged further from the substrate than the second layer. If a first layer is arranged below a second layer, this means in the sense of the invention that the second layer is arranged further from the substrate than the first layer. If a first layer is arranged above or below a second layer, this does not necessarily mean within the meaning of the invention that the first and the second layer are in direct contact with one another. One or more further layers may be arranged between the first and the second layer, unless this is explicitly excluded.
- the thermal radiation reflecting coating according to the invention has a low absorption and a low reflection and therefore a high transmission in the visible spectral range.
- the coating can therefore also be used on panes in which a significant reduction in the transmission is not desirable, for example in the case of window panes in buildings, or is prohibited by law, for example in windshields or front side windows in motor vehicles. That is a great advantage of the invention.
- the coating according to the invention is also resistant to corrosion.
- the coating can therefore be applied to the surface of the substrate, which is intended to face an interior, for example a vehicle or a building, in the installed position of the pane. On this surface, the coating according to the invention reduces particularly effectively in summer the emission of heat radiation of the pane into the interior and in winter the radiation of heat into the external environment.
- the oxygen content of the functional layer decisively influences the properties of the heat radiation-reflecting coating with respect to the emissivity, the transmission in the visible spectral range and the bendability. Too low an oxygen content leads to a high absorption of visible light and thus to a low transmission. Too low oxygen content leads to too high surface resistance and thus to high emissivity. A too low oxygen content also leads to a clear, often undesirable color impression. Too high an oxygen content of the functional layer will cause the functional layer to be damaged during bending. Such damage manifests itself in particular as cracks within the functional layer. Too high a level of oxygen continues, as does one Low oxygen content, too high sheet resistance and thus too high emissivity.
- the interior-side emissivity of the pane according to the invention is preferably less than or equal to 25%, particularly preferably less than or equal to 20%.
- Emissivity on the inside is the measure which indicates how much thermal radiation the pane emits in the installed position in comparison to an ideal heat radiator (a black body) in an interior, for example a building or a vehicle.
- emissivity is understood to be the normal emissivity at 283 K according to the EN 12898 standard.
- the sheet resistance of the coating according to the invention is preferably from 10 ohms / square to 30 ohms / square.
- the absorption of the coating according to the invention in the visible spectral range is preferably from about 1% to about 15%, more preferably from about 1% to about 7%.
- the absorption of the coating can be determined by measuring the absorption of a coated disk and subtracting the absorption of the uncoated disk.
- the disc according to the invention preferably has a color value a * of -15 to +5 and a color value b * of -15 to +5, viewed from the side provided with the coating according to the invention.
- the data a * and b * refer to the color coordinates according to the colorimetric model (L * a * b * - color space).
- the substrate may be subjected to a temperature treatment after the application of the heat radiation-reflecting coating.
- the substrate is preferably heated to a temperature of at least 200 ° C., more preferably at least 300 ° C.
- a temperature treatment influences the crystallinity of the functional layer and leads to an improved transmission of the coating according to the invention.
- the temperature treatment also reduces the sheet resistance of the coating, resulting in reduced emissivity.
- the functional layer preferably has an oxygen content after application and before a temperature treatment, such that the sheet resistance of the coating according to the invention is from 50 ohms / square to 250 ohms / square, more preferably from 80 ohms / square to 150 ohms / square.
- the specific resistance of the functional layer after application of the coating and prior to the heat treatment preferably from 500 * 10 "6 Ohm ⁇ cm to 3500 * 10" 6 Ohm-cm, more preferably from 1000 * 10 "6 Ohm ⁇ cm to 2000 * 10 "6 ohms * cm.
- the absorption of the coating in the visible spectral range after application and before the temperature treatment is preferably from 8% to 25%, more preferably from 13% to 20%.
- the oxygen content can be influenced, for example, by application of the functional layer by sputtering by the choice of the target and / or by the oxygen content of the atmosphere.
- the oxygen content suitable for sheet resistance and absorption in the specified ranges may be determined by one skilled in the art, for example by simulations or experiments.
- the temperature treatment due to the diffusion of oxygen leads to an oxidation of the functional layer.
- the extent of oxidation of the functional layer can be influenced.
- the range according to the invention for the thickness of the barrier layer of 10 nm to 40 nm is particularly advantageous with regard to the transmission of visible light, the sheet resistance and in particular the bendability of the coating.
- a thinner barrier layer leads to an excessive oxygen content of the functional layer after the temperature treatment.
- a thicker barrier layer leads to a low oxygen content of the functional layer after the temperature treatment.
- the influence of the barrier layer on the oxygen content of the functional layer is a further great advantage of the invention.
- the thickness of the barrier layer is preferably from 10 nm to 30 nm, particularly preferably 12 nm to 30 nm, very particularly preferably from 15 nm to 25 nm and in particular from 18 nm to 22 nm.
- the thickness of the barrier layer can also be, for example, from 10 nm to 18 nm or from 12 nm to 18 nm.
- the barrier layer also influences the corrosion resistance of the coating according to the invention.
- a thinner barrier layer leads to a greater corrosion susceptibility of the coating to a humid atmosphere.
- the corrosion of the coating in particular leads to a significant increase in the absorption of visible light by the coating.
- the barrier layer also influences the optical properties of the heat radiation-reflecting coating, in particular the color impression upon reflection of light.
- the barrier layer according to the invention is dielectric.
- the refractive index of the material of the barrier layer is preferably greater than or equal to the refractive index of the material of the functional layer.
- the refractive index of the material of the barrier layer is particularly preferably from 1.7 to 2.3.
- the indicated values for refractive indices are measured at a wavelength of 550 nm.
- the barrier layer preferably contains at least one oxide and / or one nitride.
- the oxide and / or nitride may be stoichiometric or non-stoichiometric.
- the barrier layer particularly preferably contains at least silicon nitride (Si 3 N 4 ). This is particularly advantageous in view of the influence of the barrier layer on the oxidation of the functional layer and on the optical properties of the disc.
- the silicon nitride may have dopants, for example titanium, zirconium, boron, hafnium and / or aluminum.
- the silicon nitride is most preferably doped with aluminum (Si 3 N 4 : Al) or doped with zirconium (Si 3 N 4 : Zr) or doped with boron (Si 3 N 4 : B). This is particularly advantageous in terms of the optical properties, the bendability, the smoothness and the emissivity of the coating and the speed of applying the barrier layer, for example by sputtering.
- the silicon nitride is preferably deposited by magnetic field assisted sputtering with a target containing at least silicon.
- the target for depositing a barrier layer containing aluminum-doped silicon nitride preferably contains from 80% by weight to 95% by weight of silicon and from 5% by weight to 20% by weight of aluminum, as well as by production-related admixtures.
- the target for depositing a barrier layer containing boron-doped silicon nitride preferably contains from 99.9990% by weight to 99.9999% by weight of silicon and from 0.0001% by weight to 0.001% by weight of boron as well as admixtures resulting from production.
- the target for depositing a Barrier layer containing zirconium-doped silicon nitride preferably contains from 60% by weight to 90% by weight of silicon and from 10% by weight to 40% by weight of zirconium, as well as by production-related additions.
- the deposition of the silicon nitride is preferably carried out with the addition of nitrogen as the reaction gas during sputtering.
- the silicon nitride can be partially oxidized.
- a barrier layer deposited as Si 3 N 4 then contains Si x N y O z after the temperature treatment, the oxygen content typically being from 0 at.% To 35 at.%.
- the barrier layer may also contain, for example, at least W0 3 , Nb 2 0 5 , Bi 2 0 3 , Ti0 2 , Zr 3 N 4 and / or AIN.
- the adhesive layer leads to a permanently stable adhesion of the layers deposited above the adhesion layer on the substrate.
- the adhesive layer further prevents the accumulation of ions diffusing out of the substrate in the boundary region to the functional layer, in particular of sodium ions, if the substrate consists of glass. Such ions can lead to corrosion and low adhesion of the functional layer.
- the adhesive layer is therefore particularly advantageous with regard to the stability of the functional layer.
- the material of the adhesion layer preferably has a refractive index in the region of the refractive index of the substrate.
- the material of the adhesive layer preferably has a lower refractive index than the material of the functional layer.
- the adhesive layer preferably contains at least one oxide.
- the adhesive layer particularly preferably contains silicon dioxide (Si0 2 ). This is particularly advantageous with regard to the adhesion of the layers deposited above the adhesion layer on the substrate.
- the silicon dioxide may have dopants, for example fluorine, carbon, nitrogen, boron, phosphorus and / or aluminum.
- the silicon dioxide is very particularly preferably doped with aluminum (SiO 2 : Al), doped with boron (SiO 2 : B) or doped with zirconium (SiO 2 : Zr). This is particularly advantageous in view of the optical properties of the coating and the speed of applying the adhesive layer, for example by sputtering.
- the silicon dioxide is preferably deposited by means of magnetic field-assisted cathode sputtering with a target which contains at least silicon.
- the target for depositing an adhesion layer containing aluminum-doped silicon dioxide preferably contains from 80% by weight to 95% by weight of silicon and from 5% by weight to 20% by weight of aluminum and by-products.
- the target for depositing an adhesion layer comprising boron-doped silicon dioxide preferably contains from 99.9990% by weight to 99.9999% by weight of silicon and from 0.0001% by weight to 0.001% by weight of boron, as well as by-products.
- the target for depositing an adhesive layer containing zirconium-doped silica preferably contains from 60% by weight to 90% by weight of silicon and from 10% by weight to 40% by weight of zirconium, as well as by production-related additions.
- the deposition of the silicon dioxide is preferably carried out with the addition of oxygen as the reaction gas during sputtering.
- the doping of the adhesive layer can also improve the smoothness of the layers applied above the adhesive layer.
- a high degree of smoothness of the layers is particularly favorable when using the pane according to the invention in the motor vehicle sector, as this avoids an unpleasant, rough feel of the pane. If the disc according to the invention is a side plate, then it can be moved with little friction to the sealing lips.
- the adhesive layer may also contain other materials, for example other oxides such as TiO 2 , Al 2 O 3 , Ta 2 0 5 , Y 2 0 3 , ZnO and / or ZnSnO x or nitrides such as AlN.
- oxides such as TiO 2 , Al 2 O 3 , Ta 2 0 5 , Y 2 0 3 , ZnO and / or ZnSnO x or nitrides such as AlN.
- the adhesive layer preferably has a thickness of 10 nm to 150 nm, particularly preferably 15 nm to 50 nm, for example about 30 nm. This is particularly advantageous with regard to the adhesion of the coating according to the invention and the avoidance of diffusion of ions from the substrate the functional layer.
- An additional adhesion-promoting layer can also be arranged below the adhesion layer, preferably with a thickness of 2 nm to 15 nm.
- the adhesion layer can contain SiO 2 and the additional adhesion-promoting layer can comprise at least one oxide such as TiO 2 , Al 2 O 3 , Ta 2 0 5 , Y 2 0 3 , ZnO and / or ZnSnO x , or contain a nitride such as AIN.
- the adhesion-promoting layer advantageously further improves the adhesion of the coating according to the invention. Also allows the adhesion-promoting layer improves the color values and the transmission or reflection.
- the functional layer has reflective properties against thermal radiation, in particular infrared radiation, but is largely transparent in the visible spectral range.
- the functional layer according to the invention contains at least one transparent, electrically conductive oxide (TCO).
- TCO transparent, electrically conductive oxide
- the refractive index of the material of the functional layer is preferably from 1.7 to 2.5.
- the functional layer preferably contains at least indium tin oxide (ITO). This results in particularly good results with regard to the emissivity and bendability of the coating according to the invention.
- the indium tin oxide is preferably deposited by magnetic field assisted sputtering with a target of indium tin oxide.
- the target preferably contains from 75% by weight to 95% by weight of indium oxide and from 5% by weight to 25% by weight of tin oxide, as well as by-product additions.
- the deposition of the indium tin oxide is preferably carried out under a protective gas atmosphere, for example argon. A small proportion of oxygen can also be added to the protective gas, for example in order to improve the homogeneity of the functional layer.
- the target may preferably contain at least 75 wt% to 95 wt% indium and from 5 wt% to 25 wt% tin.
- the deposition of the indium-tin oxide is then preferably carried out with the addition of oxygen as the reaction gas during sputtering.
- the emissivity of the disc according to the invention can be influenced by the thickness of the functional layer.
- the thickness of the functional layer is preferably from 40 nm to 200 nm, more preferably from 90 nm to 150 nm and most preferably from 100 nm to 130 nm, for example about 120 nm. In this range for the thickness of the functional layer are particularly advantageous Emissivity values and a particularly advantageous ability of the functional layer to withstand mechanical transformation such as bending or toughening without damage are achieved.
- the functional layer may also contain other transparent, electrically conductive oxides, for example fluorine-doped tin oxide (SnO 2 : F), antimony-doped tin oxide (SnO 2 : Sb), indium-zinc mixed oxide (IZO), gallium-doped or Aluminum-doped zinc oxide, niobium-doped titanium oxide, cadmium stannate and / or zinc stannate.
- fluorine-doped tin oxide SnO 2 : F
- antimony-doped tin oxide SnO 2 : Sb
- indium-zinc mixed oxide IZO
- gallium-doped or Aluminum-doped zinc oxide gallium-doped or Aluminum-doped zinc oxide
- niobium-doped titanium oxide cadmium stannate and / or zinc stannate.
- the antireflection coating reduces reflections in the visible spectral range on the pane according to the invention.
- the antireflection coating achieves, in particular, a high transmission in the visible spectral range through the pane according to the invention and a more neutral color impression of reflected and transmitted light.
- the antireflection layer also improves the corrosion resistance of the functional layer.
- the material of the antireflection layer preferably has a refractive index which is smaller than the refractive index of the material of the functional layer.
- the refractive index of the material of the antireflection layer is preferably less than or equal to 1.8.
- the antireflection layer preferably contains at least one oxide.
- the antireflection layer particularly preferably contains silicon dioxide (SiO 2 ). This is particularly advantageous in view of the optical properties of the disc and the corrosion resistance of the functional layer.
- the silicon dioxide may have dopants, for example fluorine, carbon, nitrogen, boron, phosphorus and / or aluminum.
- the silicon nitride is very particularly preferably doped with aluminum (SiO 2 : Al), doped with boron (SiO 2 : B) or doped with zirconium (SiO 2 : Zr).
- the antireflection coating may also contain other materials, for example other oxides such as TiO 2 , Al 2 O 3 , Ta 2 O 5 , Y 2 O 3 , ZnO and / or ZnSnO, or nitrides such as AlN.
- oxides such as TiO 2 , Al 2 O 3 , Ta 2 O 5 , Y 2 O 3 , ZnO and / or ZnSnO, or nitrides such as AlN.
- the antireflection layer preferably has a thickness of 20 nm to 150 nm, particularly preferably 40 nm to 100 nm. This is particularly advantageous in terms of low reflection and high transmission of visible light and the setting of a targeted color impression of the disc and the Corrosion resistance of the functional layer.
- a covering layer is arranged above the heat radiation-reflecting coating.
- the cover layer protects the coating according to the invention from damage, in particular from scratching.
- the cover layer preferably contains at least one oxide, particularly preferably at least titanium oxide (TiO x ), ZrO 2 , HfO 2 , Nb 2 O 5 , Ta 2 O 5 , Cr 2 O 3 , WO 3 and / or CeO 2 .
- the thickness of the cover layer is preferably from 2 nm to 50 nm, more preferably from 5 nm to 20 nm. This results in particularly good scratch resistance results.
- the substrate preferably contains glass, particularly preferably flat glass, float glass, quartz glass, borosilicate glass, soda-lime glass or clear plastics, preferably rigid clear plastics, in particular polyethylene, polypropylene, polycarbonate, polymethyl methacrylate, polystyrene, polyamide, polyester, polyvinyl chloride and / or mixtures from that.
- glass particularly preferably flat glass, float glass, quartz glass, borosilicate glass, soda-lime glass or clear plastics, preferably rigid clear plastics, in particular polyethylene, polypropylene, polycarbonate, polymethyl methacrylate, polystyrene, polyamide, polyester, polyvinyl chloride and / or mixtures from that.
- the thickness of the substrate can vary widely and thus be perfectly adapted to the requirements in individual cases. It is preferable to use disks having the standard thicknesses of 1.0 mm to 25 mm and preferably 1.4 mm to 4.9 mm.
- the size of the substrate can vary widely and depends on the use according to the invention.
- the substrate has, for example, in the automotive and architectural field common areas of 200 cm 2 to 20 m 2 .
- the substrate has a transmission in the visible spectral range of greater than or equal to 70%.
- the substrate may also have a higher transmission, for example greater than or equal to 85%. Since the coating according to the invention has low absorption, it is thus possible to realize disks with high transmission in the visible spectral range, which are suitable, for example, as windshields.
- the pane according to the invention with heat radiation-reflecting coating preferably has a total transmission of greater than 70%.
- the term total transmission refers to the procedure defined by ECE-R 43, Annex 3, ⁇ 9.1 for testing the light transmission of vehicle windows.
- the substrate is tinted or colored.
- the substrate may preferably have a transmission in the visible spectral range of less than 50%, for example less than 15%. In this way it is possible to realize disks with a transparent coating according to the invention and with a reduced transmission in the visible spectral range.
- Such tinted or colored panes may be desirable, for example, for aesthetic or thermal reasons.
- the substrate is slightly or strongly bent in one direction or in several directions of the space.
- Such curved windows occur in particular for glazing in the vehicle area.
- Typical radii of curvature of the curved discs are in the range of about 10 cm to about 40 m.
- the radius of curvature need not be constant over the entire disk, there may be stronger and less curved portions in a disk.
- a planar substrate can be provided with the coating according to the invention and that the coating is not damaged in a subsequent bending process, which is typically carried out at elevated temperatures of for example 500 ° C to 700 ° C.
- the barrier layer of the coating according to the invention on a curved substrate preferably has a thickness of 10 nm to 30 nm, particularly preferably 12 nm to 30 nm, very particularly preferably 15 nm to 25 nm and in particular 18 nm to 22 nm, for example approximately This is particularly advantageous with respect to the emissivity and transmission of visible light as well as the ability of the coating to survive unscathed mechanical transformation such as bending or biasing of the substrate.
- the thickness of the barrier layer can also be, for example, from 10 nm to 18 nm or from 12 nm to 18 nm, which is advantageous in terms of material savings and the transmission of visible light.
- the coating can of course also be applied to a curved substrate.
- the three-dimensional shape of the substrate preferably has no shadow zones, so that the substrate can be coated, for example, by cathode sputtering.
- the substrate is flat. Plane slices occur, for example, in glazing in the field of architecture or in large-area glazing of buses, trains or tractors.
- the substrate is considered to be flat if its main surfaces, through which a viewer looks in the installed position, are not substantially bent, but are substantially planar. The main surfaces do not necessarily have to be plane-parallel.
- the barrier layer of the coating according to the invention on a planar substrate preferably has a thickness of 10 nm to 25 nm, particularly preferably 12 nm to 18 nm and very particularly preferably 14 nm to 16 nm, for example approximately 15 nm. Since the coating is not bent must be thinner, the thickness of the barrier layer can be selected as in the embodiment with curved substrate. Thereby, a higher oxygen content of the functional layer is achieved after a temperature treatment, which leads to a reduced absorption and thus a higher transmission of visible light with simultaneously low emissivity.
- the coating according to the invention is preferably applied to the surface of the substrate, which is intended to be in the installation position of the disc to an interior, for example, the interior of a building or a vehicle to be facing. This is particularly advantageous in terms of thermal comfort in the interior.
- the surface, which is intended to be facing the interior in the installation position of the disc is referred to in the context of the invention as the interior surface.
- the coating according to the invention can at least partially reflect the heat radiation emitted by the entire pane in the direction of the interior at high outside temperatures and solar radiation. At low ambient temperatures, the coating according to the invention can effectively reflect the radiated heat radiation from the interior and thus reduce the effect of the cold disk as a heat sink.
- the coating according to the invention can be applied over the entire surface of the surface of the substrate.
- the surface of the substrate may also have coating-free areas.
- the surface of the substrate may, for example, a circumferential coating-free edge region and / or a coating-free area, which serves as a data transmission window or communication window have.
- the disk is permeable to electromagnetic and in particular infrared radiation in the coating-free region.
- the substrate can also be provided on both surfaces with a respective heat radiation reflecting coating according to the invention.
- the substrate is connected via at least one thermoplastic intermediate layer with a cover plate to form a composite disk.
- the cover plate is preferably intended to be facing in installation position of the composite disk of the external environment, while the substrate faces the interior.
- the cover plate can also be provided for facing the interior in the installation position of the composite pane.
- the coating according to the invention is preferably arranged on the surface of the substrate facing away from the cover disk.
- the cover plate preferably contains glass, particularly preferably flat glass, float glass, quartz glass, borosilicate glass, soda-lime glass or clear plastics, preferably rigid clear plastics, in particular polyethylene, polypropylene, polycarbonate, polymethyl methacrylate, polystyrene, polyamide, polyester, polyvinyl chloride and / or mixtures from that.
- the cover plate preferably has a thickness of 1, 0 mm to 25 mm and particularly preferably from 1, 4 mm to 4.9 mm.
- the thermoplastic intermediate layer preferably contains thermoplastics, for example polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), polyurethane (PU), polyethylene terephthalate (PET) or several layers thereof, preferably with thicknesses of 0.3 mm to 0.9 mm.
- PVB polyvinyl butyral
- EVA ethylene vinyl acetate
- PU polyurethane
- PET polyethylene terephthalate
- the composite pane has a total transmission of greater than 70% and an interior-side emissivity of less than or equal to 25%.
- the composite pane has a significantly reduced transmission of visible light, for example less than 50%, less than 15%, less than 10% or less than 6%. That can be through the use a tinted or colored cover glass or a tinted or colored substrate. Alternatively, a tinted or colored thermoplastic intermediate layer may be used or a tinted or colored film placed in the thermoplastic intermediate layer.
- the substrate is connected via at least one thermoplastic intermediate layer with a cover plate to form a composite pane.
- the substrate is intended to be in an installed position facing an interior, while the cover plate faces the external environment.
- the heat radiation-reflecting coating according to the invention is applied to the surface of the substrate facing away from the cover disk, that is to say on the interior-side surface of the substrate.
- the thickness of the barrier layer is from 10 nm to 40 nm, preferably from 10 nm to 30 nm.
- the composite disk has a transmission of visible light of less than 15%, preferably less than 10%, which is achieved by a tinted cover disk, a tinted substrate and / or a tinted thermoplastic intermediate layer is achieved.
- the cover disk and the substrate may be bent.
- Such a composite disk with lower transmission and the coating of the invention is particularly advantageous in terms of thermal comfort and it is achieved an advantageously low value for the transmitted solar energy (TTS value).
- the thermal radiation reflective coating reduces the radiation of radiation energy absorbed by the tinted disks into the interior.
- the coating according to the invention has an advantageous bendability and corrosion resistance.
- aesthetic color values can be achieved by means of a barrier layer with a thickness of at most 40 nm.
- the coating according to the invention is applied to the interior of the surface facing the substrate, wherein the substrate facing the interior facing disc of a composite pane.
- a sun protection coating is further applied on the surface of the substrate facing the cover disk, on the surface of the cover disk facing the substrate or on a carrier film in the thermoplastic intermediate layer.
- the sunscreen coating is there advantageously protected against corrosion and mechanical damage.
- the sunscreen coating includes preferably at least one metallic layer based on silver or a silver-containing alloy with a thickness of 5 nm to 25 nm.
- the sunscreen coating reflects portions of the incident solar radiation outside the visible spectral range, especially in the infrared spectral range.
- the sun protection coating reduces the heating of the interior due to direct sunlight.
- the solar control coating reduces the heating of the arranged in the direction of incidence of the solar radiation behind the solar control coating elements of the composite disc and thus emitted by the composite disc thermal radiation.
- the substrate can also be connected to a further pane via spacers to form insulating glazing.
- the substrate may also be connected to more than one further wafer via thermoplastic interlayers and / or spacers.
- the invention further comprises a method for producing a pane according to the invention with a heat radiation-reflecting coating, wherein at least one successive substrate
- the substrate is heated to a temperature of at least 200 ° C.
- a cover layer is applied after the application of the antireflection coating.
- the individual layers are deposited by methods known per se, preferably by magnetic field-assisted sputtering. This is particularly advantageous in terms of a simple, fast, inexpensive and uniform coating of the substrate.
- the cathode sputtering takes place in a protective gas atmosphere, for example from argon, or in a reactive gas atmosphere, for example by adding oxygen or nitrogen.
- the individual layers can also be applied by other methods known to the person skilled in the art, for example by vapor deposition or chemical vapor deposition (CVD), by plasma-assisted vapor deposition (PECVD) or by wet-chemical methods.
- CVD chemical vapor deposition
- PECVD plasma-assisted vapor deposition
- wet-chemical methods for example by vapor deposition or chemical vapor deposition (CVD), by plasma-assisted vapor deposition (PECVD) or by wet-chemical methods.
- the wafer is subjected to a temperature treatment in process step (e) after the application of the heat radiation-reflecting coating.
- the substrate is heated with the coating according to the invention to a temperature of at least 200 ° C, more preferably at least 300 ° C.
- the crystallinity of the functional layer is improved by the temperature treatment. As a result, the transmission of visible light and the reflective properties against thermal radiation are significantly improved.
- the temperature treatment in process step (e) takes place in the context of a bending process.
- the substrate is bent with the coating according to the invention in the heated state in one or more directions of the room.
- the temperature to which the substrate is heated is preferably from 500 ° C to 700 ° C. It is a particular advantage of the thermal radiation reflection coating according to the invention that it can undergo such a bending process without being damaged.
- a temperature treatment can take place before or after the bending process.
- a temperature treatment can also be carried out by means of laser radiation.
- the substrate may in an advantageous embodiment after the temperature treatment in process step (e) and optionally after bending with a bias voltage or partial prestressing.
- the substrate is suitably cooled in a conventional manner.
- a biased substrate typically has surface compressive stresses of at least 69 MPa.
- a semi-tempered substrate typically has surface compressive stresses of 24 MPa to 52 MPa.
- a prestressed substrate is suitable as a single-pane safety glass, for example as a side window or rear window of a motor vehicle.
- the substrate is connected after the temperature treatment and optionally after the bending process and / or the biasing process via at least one thermoplastic intermediate layer with a cover plate to form a composite disk.
- the substrate is preferably arranged in the composite so that the surface provided with the coating according to the invention is remote from the thermoplastic intermediate layer and the cover disk.
- the invention further encompasses the use of the pane according to the invention with heat radiation-reflecting coating as a pane or as a component of a pane, in particular as a component of insulating glazing or a composite pane, in buildings, in particular in the access or window area, as a built-in part in furniture and appliances, in particular electronic appliances with cooling or heating function, for example as oven door or refrigerator door, or in means of transport for traffic on land, in the air or on water, especially in trains, ships and motor vehicles, for example as a windshield, rear window, side window and / or roof glass.
- FIG. 1 shows a cross section through an embodiment of the disc according to the invention with heat radiation reflecting coating
- FIG. 3 shows a cross section through a composite pane comprising a pane according to the invention
- Fig. 4 is a diagram of the number of cracks in the heat radiation reflecting
- FIG. 5 is a diagram of the transmission in the visible spectral range through a disc according to the invention as a function of the thickness of the
- FIG. 6 shows a detailed flowchart of an embodiment of the method according to the invention.
- the substrate 1 shows a cross section through an embodiment of the pane according to the invention with the substrate 1 and the heat radiation reflecting coating 2.
- the substrate 1 contains soda-lime glass and has a thickness of 2.9 mm.
- the coating 2 comprises an adhesion layer 3, a functional layer 4, a barrier layer 5 and an antireflection layer 6.
- the layers are arranged in the order given with increasing distance to the substrate 1. The exact layer sequence with suitable materials and exemplary layer thicknesses is shown in Table 1.
- the individual layers of the coating 2 were deposited by magnetic field assisted cathode jet sputtering.
- the target for depositing the adhesive layer 3 and the anti-reflection layer 6 contained 92 wt% of silicon and 8 wt% of aluminum.
- the deposition was carried out with the addition of oxygen as the reaction gas during sputtering.
- the target for depositing the functional layer 4 contained 90% by weight of indium oxide and 10% by weight of tin oxide.
- the deposition took place under an argon protective gas atmosphere with an oxygen content of less than 1%.
- the target for the deposition of the barrier layer 5 contained 92% by weight of silicon and 8% by weight of aluminum.
- the deposition was carried out with the addition of nitrogen as the reaction gas during sputtering.
- the coating 2 shows a cross section through a further embodiment of the pane according to the invention with the substrate 1 and the heat radiation reflecting coating 2.
- the coating 2 is configured as in FIG. 1 with the adhesion layer 3, the functional layer 4, the barrier layer 5 and the antireflection layer 6 Above the coating 2, a covering layer 7 is arranged.
- the cover layer contains Ta 2 0 5 and has a thickness of 10 nm.
- the covering layer 2 advantageously protects the coating 2 from mechanical damage, in particular from scratching.
- FIG. 3 shows a cross section through a pane according to the invention with heat radiation-reflecting coating 2 as part of a composite pane.
- the substrate 1 is connected via a thermoplastic intermediate layer 9 with a cover plate 8.
- the composite pane is provided as a windshield for a motor vehicle.
- the composite disc is bent, as is usual for discs in the automotive sector.
- the surface of the substrate 1, which faces away from the cover disk 8 and the thermoplastic intermediate layer 9, is provided with the coating 2 according to the invention.
- the cover plate 8 of the external environment and the substrate 1 faces the vehicle interior.
- the cover disc contains soda-lime glass and has a thickness of 2, 1 mm.
- the thermoplastic intermediate layer 9 contains polyvinyl butyral (PVB) and has a thickness of 0.76 mm.
- PVB polyvinyl butyral
- the coating 2 according to the invention has a low absorption of visible light.
- the coating 2 therefore does not significantly reduce the transmission in the visible spectral range through the composite pane.
- the composite glass has a transmission in the visible spectral range of more than 70% and meets the legal requirements for windscreens.
- the coating 2 according to the invention is also stable against corrosion by atmospheric oxygen and other environmental influences and can therefore be arranged on the vehicle interior facing surface of the composite disc, where it leads to improve the thermal comfort in the vehicle interior particularly effective.
- the coating 2 reflects part of the solar radiation incident on the composite pane, in particular in the infrared range.
- the heat radiation emitted by the warm composite pane in the direction of the vehicle interior is also at least partially suppressed by the low emissivity of the coating 2.
- the interior is less heated in the summer. In winter, the radiant heat emanating from the interior is reflected.
- the cold composite disk therefore acts less strongly as an unpleasant heat sink.
- the required heating power of the air conditioner can be reduced, resulting in a significant energy savings.
- the coating 2 is preferably applied to the planar substrate 1 before the substrate 1 is bent.
- the coating of a planar substrate is technically much simpler than the coating of a curved substrate.
- the substrate 1 is then typically heated to a temperature of 500 ° C to 700 ° C, for example 640 ° C.
- the temperature treatment is required on the one hand to bend the substrate 1.
- the transmission of visible light and the emissivity of the coating 2 are regularly improved by the temperature treatment.
- the barrier layer 5 according to the invention influences the extent of oxidation of the functional layer 4 during the temperature treatment.
- the oxygen content of the functional layer 4 is sufficiently low after the temperature treatment, so that the coating 2 can be subjected to a bending process. Excessive oxygen content would damage the functional layer 4 during bending.
- the oxygen content of the functional layer 4 is according to the On the other hand, temperature treatment is high enough for high visible light transmission and low emissivity. This is a great advantage of the present invention.
- the composite pane may also have a low visible light transmission of, for example, less than 10%.
- Such composite discs can be used for example as a rear window or roof glass. Due to the coating 2 according to the invention, which has a barrier layer 5 with a thickness of 10 nm to 40 nm, in addition to the bendability and corrosion resistance, advantageous color values are also achieved.
- Fig. 4 shows observations on three test discs.
- the test disks were deposited by means of cathode sputtering with the targets and conditions mentioned in FIG.
- the test disks with the substrate 1 and the heat radiation reflecting coating 2 differ in the thickness of the barrier layer 5.
- the layer sequence, materials and layer thicknesses of the test disks are summarized in Table 2.
- the substrate 1 was initially flat and was provided with the coating 2 according to the invention.
- the substrate 1 with the coating 2 was then subjected to a temperature treatment at 640 ° C for 10 minutes, thereby bent and provided with a radius of curvature of about 30 cm.
- the barrier layer 5 was deposited as aluminum-doped Si 3 N 4 and is indicated as such in the table. However, due to partial oxidation during the temperature treatment, the barrier layer may also contain Si x N y O z .
- part (a) of the diagram the number of cracks per cm 2 in the coating 2 after the bending process is plotted against the thickness of the barrier layer 5. It can be seen that the number of cracks increases greatly when the barrier layer 5 is too thin. The reason for this seems to be excessive oxidation of the functional layer 4 during the temperature treatment. The excessive oxidation of the functional layer 4 can not be effectively reduced by a barrier layer 5 that is too thin.
- the absorption of visible light as it passes through the disk is plotted against the thickness of the barrier layer 5.
- the absorption increases with the thickness of the barrier layer 5.
- the absorption by the coating 2 is dependent on the oxygen content of the functional layer 4.
- the oxygen content of the functional layer 4 is dependent on the thickness of the barrier layer 5. Too thick a barrier layer 5 leads to a low oxygen content of the functional layer 4. Too low an oxygen content of the functional layer 4 leads to a high absorption and thus impairs the viewing through the pane.
- the color values of the disc shift undesirably with increasing thickness of the barrier layer 5.
- the emissivity of the test disks is plotted against the thickness of the barrier layer 5.
- the emissivity depends on the thickness of the barrier layer 5. This effect seems to be caused by the oxygen content of the functional layer 4 influenced by the barrier layer 5.
- Part (d) of the diagram shows a result of a pressure cooker test (DKKT).
- DKKT pressure cooker test
- the disk is hermetically sealed in a metal container partially filled with water and heated to a temperature of 120 ° C for 48 hours.
- the disc is exposed to elevated pressure and hot water vapor and the disc can be tested for corrosion resistance.
- the relative change in the absorption of the slices after the pressure cooker test compared to the absorption of the pressure cooker test, depending on the thickness of the barrier layer 5 is given.
- a large change in absorption indicates corrosion of coating 2 during the pressure cooker test. It can be seen that the corrosion resistance of the coating 2 increases with increasing thickness of the barrier layer 5.
- the particular advantage of the area according to the invention for the thickness of the barrier layer 5 can be seen from the diagram.
- the thickness of the barrier layer 5 of 10 nm to 40 nm is selected according to the invention such that the coating 2 can be subjected to a bending process on the one hand (ie after bending has no or only a small number of cracks) and on the other hand a sufficiently low absorption (less than about 15%), a sufficiently low emissivity (less than about 25%) and a favorable corrosion resistance.
- the thickness of the barrier layer 5 is from 12 nm to 30 nm and in particular 15 nm to 25 nm.
- the thickness of the barrier layer 5 is from 12 nm to 30 nm and in particular 15 nm to 25 nm.
- the thickness of the barrier layer 5 can be made smaller if the substrate is not to be bent. In this case, it is not necessary to consider cracks in the coating 2 which would occur during a bending process. Thus, a lower absorption of visible light and at the same time an advantageously low emissivity can be achieved. If the coating 2 is applied to a planar substrate 1, an absorption of less than 5% and an emissivity of less than approximately 20% can be achieved with a barrier layer 5 having a thickness in the range from 12 nm to 18 nm.
- RQ Uad r a t is the sheet resistance of the coating 2.
- A denotes the absorption of the disks from visible light. The absorption of the coating 2 results from this by subtracting the absorption of the uncoated substrate 1 by about 1.5%.
- ⁇ ⁇ denotes the normal emissivity of the disks.
- T L denotes the transmission of the visible light disks.
- R L denotes the reflectivity of the visible light disks.
- the indications a * and b * refer to the color coordinates in reflection according to the colorimetric model (L * a * b * color space), viewed from the side of the disc provided with the coating 2.
- the sheet resistance and the absorption before the temperature treatment are dependent on the oxygen content of the functional layer 4.
- the target and the oxygen content of the atmosphere in the application of the functional layer 4 are chosen to be suitable.
- the sheet resistance was significantly reduced, resulting in an advantageously low emissivity.
- the wheels had a high transmission and advantageous color values and can therefore be used, for example, as windshields.
- the substrate 1, the adhesion layer 3, the functional layer 4 and the barrier layer 5 were designed in the simulation as in Table 2, Example 2 , The thickness of the anti-reflective layer 6 of Si0 2 was varied in the simulation.
- An antireflection layer 6 having a thickness in the range of 40 nm to 100 nm leads to a particularly advantageous transmission through the disk of greater than or equal to about 87% due to a significantly reduced reflection on the coating 2.
- FIG. 6 shows a flow chart of an exemplary embodiment of the method according to the invention for producing a pane with heat radiation-reflecting coating 2.
- An adhesive layer 3, a functional layer 4, a barrier layer 5 and an antireflection layer 6 are applied in succession to a surface of a substrate 1 by means of magnetic field assisted sputtering.
- the applied layers 3, 4, 5, 6 form the heat radiation-reflecting coating 2.
- the substrate 1 is then subjected to a temperature treatment at at least 200 ° C.
- the temperature treatment can also take place in the context of a bending process, in which the substrate 1 is heated and bent, for example, to a temperature of 640.degree.
- the substrate 1 can then be connected, for example via a thermoplastic intermediate layer 9 with an equally curved cover plate 8 to form a composite disk.
- the substrate 1 is arranged in a composite such that the surface of the substrate 1, to which the coating 2 is applied, is remote from the thermoplastic intermediate layer 9.
- the substrate 1 may also be provided with a bias after the temperature treatment and optionally after the bending.
- thermoplastic intermediate layer (9) thermoplastic intermediate layer
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- General Chemical & Material Sciences (AREA)
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- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Surface Treatment Of Glass (AREA)
- Laminated Bodies (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
Description
Claims
Priority Applications (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020167013227A KR101676233B1 (ko) | 2012-03-05 | 2013-01-16 | 열 복사선을 반사하는 코팅을 갖는 시트 |
JP2014560282A JP5897157B2 (ja) | 2012-03-05 | 2013-01-16 | 熱放射反射コーティングを有するプレート |
PL13700564T PL2822907T3 (pl) | 2012-03-05 | 2013-01-16 | Szyba pojazdu mechanicznego z powłoką odbijającą promieniowanie cieplne |
BR112014017440-7A BR112014017440B1 (pt) | 2012-03-05 | 2013-01-16 | painel para veículos motorizados com revestimento de reflexão de radiação térmica, método para produzir e uso de tal painel |
KR1020147024625A KR20140130694A (ko) | 2012-03-05 | 2013-01-16 | 열 복사선을 반사하는 코팅을 갖는 시트 |
US14/367,733 US9541686B2 (en) | 2012-03-05 | 2013-01-16 | Sheet with coating which reflects thermal radiation |
CN201380012760.8A CN104159861B (zh) | 2012-03-05 | 2013-01-16 | 具有热辐射反射涂层的窗玻璃 |
ES13700564T ES2854986T3 (es) | 2012-03-05 | 2013-01-16 | Luna de automóvil con revestimiento reflectante de la radiación térmica |
EA201491638A EA030714B1 (ru) | 2012-03-05 | 2013-01-16 | Стекло, снабженное покрытием, отражающим тепловое излучение |
EP13700564.1A EP2822907B1 (de) | 2012-03-05 | 2013-01-16 | Kraftfahrzeugscheibe mit wärmestrahlung reflektierender beschichtung |
MX2014010486A MX358614B (es) | 2012-03-05 | 2013-01-16 | Cristal con revestimiento que refleja radiación térmica. |
CA2861707A CA2861707C (en) | 2012-03-05 | 2013-01-16 | Pane with thermal radiation reflecting coating |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12158005.4 | 2012-03-05 | ||
EP12158005 | 2012-03-05 |
Publications (1)
Publication Number | Publication Date |
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WO2013131667A1 true WO2013131667A1 (de) | 2013-09-12 |
Family
ID=47563507
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2013/050698 WO2013131667A1 (de) | 2012-03-05 | 2013-01-16 | Scheibe mit wärmestrahlung reflektierender beschichtung |
Country Status (13)
Country | Link |
---|---|
US (1) | US9541686B2 (de) |
EP (1) | EP2822907B1 (de) |
JP (1) | JP5897157B2 (de) |
KR (2) | KR20140130694A (de) |
CN (1) | CN104159861B (de) |
BR (1) | BR112014017440B1 (de) |
CA (1) | CA2861707C (de) |
EA (1) | EA030714B1 (de) |
ES (1) | ES2854986T3 (de) |
HU (1) | HUE053477T2 (de) |
MX (1) | MX358614B (de) |
PL (1) | PL2822907T3 (de) |
WO (1) | WO2013131667A1 (de) |
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2013
- 2013-01-16 US US14/367,733 patent/US9541686B2/en active Active
- 2013-01-16 ES ES13700564T patent/ES2854986T3/es active Active
- 2013-01-16 CN CN201380012760.8A patent/CN104159861B/zh active Active
- 2013-01-16 BR BR112014017440-7A patent/BR112014017440B1/pt not_active IP Right Cessation
- 2013-01-16 PL PL13700564T patent/PL2822907T3/pl unknown
- 2013-01-16 EP EP13700564.1A patent/EP2822907B1/de active Active
- 2013-01-16 JP JP2014560282A patent/JP5897157B2/ja active Active
- 2013-01-16 KR KR1020147024625A patent/KR20140130694A/ko active Application Filing
- 2013-01-16 MX MX2014010486A patent/MX358614B/es active IP Right Grant
- 2013-01-16 HU HUE13700564A patent/HUE053477T2/hu unknown
- 2013-01-16 CA CA2861707A patent/CA2861707C/en not_active Expired - Fee Related
- 2013-01-16 EA EA201491638A patent/EA030714B1/ru not_active IP Right Cessation
- 2013-01-16 KR KR1020167013227A patent/KR101676233B1/ko active IP Right Grant
- 2013-01-16 WO PCT/EP2013/050698 patent/WO2013131667A1/de active Application Filing
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Also Published As
Publication number | Publication date |
---|---|
EA030714B1 (ru) | 2018-09-28 |
MX358614B (es) | 2018-08-29 |
US9541686B2 (en) | 2017-01-10 |
CA2861707A1 (en) | 2013-09-12 |
EA201491638A1 (ru) | 2014-12-30 |
CN104159861B (zh) | 2018-04-03 |
CN104159861A (zh) | 2014-11-19 |
KR101676233B1 (ko) | 2016-11-14 |
BR112014017440A2 (pt) | 2017-06-13 |
ES2854986T8 (es) | 2021-12-07 |
US20150146286A1 (en) | 2015-05-28 |
HUE053477T2 (hu) | 2021-06-28 |
PL2822907T3 (pl) | 2021-07-05 |
KR20160064233A (ko) | 2016-06-07 |
CA2861707C (en) | 2017-03-07 |
BR112014017440B1 (pt) | 2020-12-29 |
MX2014010486A (es) | 2014-11-14 |
JP5897157B2 (ja) | 2016-03-30 |
KR20140130694A (ko) | 2014-11-11 |
ES2854986T3 (es) | 2021-09-23 |
EP2822907A1 (de) | 2015-01-14 |
BR112014017440A8 (pt) | 2017-07-04 |
JP2015512854A (ja) | 2015-04-30 |
EP2822907B1 (de) | 2021-02-24 |
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