WO2022123595A1 - Article revêtu de commande solaire doté d'une résistance améliorée à la corrosion - Google Patents

Article revêtu de commande solaire doté d'une résistance améliorée à la corrosion Download PDF

Info

Publication number
WO2022123595A1
WO2022123595A1 PCT/IN2021/051141 IN2021051141W WO2022123595A1 WO 2022123595 A1 WO2022123595 A1 WO 2022123595A1 IN 2021051141 W IN2021051141 W IN 2021051141W WO 2022123595 A1 WO2022123595 A1 WO 2022123595A1
Authority
WO
WIPO (PCT)
Prior art keywords
glazing
solar control
layer
coated article
stack
Prior art date
Application number
PCT/IN2021/051141
Other languages
English (en)
Inventor
Priyesh DHANDHARIA
Soumyadeep MISRA
Azhagu GANESH
Original Assignee
Saint-Gobain Glass France
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 Saint-Gobain Glass France filed Critical Saint-Gobain Glass France
Priority to MX2023006521A priority Critical patent/MX2023006521A/es
Publication of WO2022123595A1 publication Critical patent/WO2022123595A1/fr
Priority to CONC2023/0007283A priority patent/CO2023007283A2/es

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
    • B32B17/1022—Metallic coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
    • B32B17/1022—Metallic coatings
    • B32B17/10229—Metallic layers sandwiched by dielectric layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
    • 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
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • 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
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3626—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer one layer at least containing 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
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3649—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer made of metals other than silver
    • 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
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3657—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating having optical properties
    • C03C17/366—Low-emissivity or solar control coatings

Definitions

  • the present disclosure relates, in general to a solar control coated article comprising a transparent substrate, on the surface of which a stack of thin layers is deposited which comprises a functional layer based on NiCr or NiCrN. More specifically the invention relates to a solar control coated article having an improved resistance to corrosion while retaining an internal reflection of less than 10% for varying values of light transmission (TL) in the visible spectrum.
  • TL light transmission
  • coated glass article in architecture and automotive design is well known. As reported prolifically in patent and other literature, such glass articles usually achieve, through the manipulation of the coating's layering system, quite acceptable degrees of reflectance, transmittance, emissivity, color matchability, and durability, as well as the color desired. It has also been well reported that while several reasonably acceptable techniques exist for applying such coatings, one of the most efficacious, and thus preferred, is the well-known technique referred to as "magnetically enhanced sputter coating".
  • heat treatable The absence of any substantial adverse effect upon heating the coating or its substrate, defines what is meant herein by the term "heat treatable". While in certain situations some characteristics may change somewhat during heat treatment, to be "heat treatable" as used herein means that the desired properties such as emissivity, sheet resistance, durability and corrosion resistance of the ultimate layer system and overall product must be achieved despite the fact that the coated glass has been subjected to one or more of the heat treatments (i.e. bending, tempering and/or heat strengthening). For most architectural purposes contemplated by this invention optimized heat treatability means that the glass and its layered coating remains substantially unchanged in at least its emissivity, sheet resistance, durability and corrosion resistance properties as between the pre-heat treated product and the final product after heat treatment.
  • the solar control coated articles can be subjected to harsh environmental conditions such as that in coastal regions where the presence of chloride ions is very high. In such cases the performance of these coated articles are severely impacted by their limited resistance to corrosion.
  • the light transmission and the solar factor of the coated glass article depend in particular on the thickness of the functional layer that comprise the layer stack deposited on the surface of the transparent substrate which forms the glass surface.
  • the light transmission and the solar factor vary contradictorily with the thicknesses of the functional layers. The thicker the functional layers, the lower is the light transmission and solar factor.
  • the coated glass article surfaces can also have an aesthetic function for buildings and transport vehicles in which they are likely to be incorporated. In certain applications, they must present, in external reflection, an appearance of neutral color, that is to say preferably close to the gray color. Such a surface appearance is generally desired for pleasant aesthetic appearance and is the result of the values of the two parameters a * and b * in the L * a * b * system being close to zero, ideally between -5 and 0.
  • the external reflection depends partly on the thickness of the functional layers. The thicker the metallic functional layers, the higher the external reflection, and vice versa.
  • any increase in the thickness of the functional metal causes a decrease in light transmission and solar factor. Therefore, although the external reflection increases as the thickness of the metallic functional layer increases, the selectivity (ratio of the light transmission to the solar factor, TL/g) decreases detrimentally for thermal performance (may not be entirety true for layer stack having multiple functional layers). It should further be noted that higher the reflection (be it internal and / or external) lower will be the visual comfort of building occupants and bystanders, respectively. Therefore, it is desirable and beneficial to keep the internal reflection low.
  • a thin functional layer is preferred for higher light transmission TL.
  • solar factor comes down but both external and internal reflection increase.
  • the materials currently in the market do not make it possible to combine a low solar factor and low internal reflection for a range of light transmission starting from a lower value of 7% up to a higher value of 65%, while achieving desired neutral external reflection.
  • the objective of the invention is therefore to develop a heat treatable material having:
  • Certain example embodiments of this disclosure relate to glazing that is durable having an increased thermal and chemical stability while retaining desired optical characteristics of the article. Certain example embodiments of this invention also relate to a process of making the same.
  • a solar control coated article comprising a transparent substrate coated with a stack of thin layers on at least one of its surface.
  • the stack of thin layers successively comprising, starting from the substrate: a first dielectric coating; a functional layer based on NiCr or NiCrN placed above the first dielectric coating; a metallic layer placed over and in direct contact with the functional layer; and a second dielectric coating placed above the metallic layer, wherein: the metallic layer is based on Ti or Nb and has a thickness not greater than 4 nm; and wherein the solar control article has a neutral external appearance in both reflection and transmission.
  • the present disclosure also relates to: a glazing comprising at least one solar control coated article according to the invention, the use of a glazing according to the invention for buildings or vehicles, a building or vehicle comprising a glazing according to the disclosure.
  • FIG. 1 illustrates a stack of thin layers deposited on a transparent glass substrate, according to one embodiment of the present disclosure
  • FIG. 2 illustrates a stack of thin layers deposited on a transparent glass substrate, according to an optional embodiment of the present disclosure.
  • Embodiments disclosed herein are related to solar control coated article having an improved resistance to corrosion while retaining an internal reflection of less than 10% for varying values of light transmission (TL) in the visible spectrum.
  • FIG. 1 illustrates a solar control glass article 500 comprising a stack of thin layers 200 having one function layer 50 based on NiCr or NiCrN sandwiched between a first dielectric coating 20 deposited below and a second dielectric coating 120 deposited above, all arranged on a transparent substrate 10.
  • Deposited above and in direct contact with the functional layer 50 is a metallic layer 100 based on Ti or Nb.
  • dielectric/ NiCr or NiCrN/ dielectric was largely known in the art, they were found and reported to be highly susceptible to chloride attack particularly after exposure to glass heat treatment temperatures. This resulted in reduced durability and product life.
  • the metallic layer 100 based on Ti or Nb was introduced to the stack of thin layers 200. Adding a metallic layer 100 based on Ti or Nb, metals that are highly chemically resistant significantly improves the durability of the underlying NiCr or NiCrN based functional layer 50. Further the metallic layer 100 is advantageously positioned directly above and in contact with the functional layer 50.
  • the present invention in general relates to performance of single glazed unit (SGU) with low internal reflection.
  • SGU single glazed unit
  • the low internal reflection is achieved for different transmission levels in visible spectrum and neutral external reflection color.
  • Adding to the aesthetic properties, is the ability of the stack of thin layers to block solar radiation and thus provides solar control properties.
  • the stack of thin layers 200 may further comprise an additional optional metallic layer 100’ (not represented) placed directly under and in direct contact with the functional layer 50 and at least one protective layer 150 (not represented).
  • the desired advantageous optical characteristics viz., neutral external color in reflection and in transmission were surprisingly obtained by the inventors of the present invention.
  • the optimized color values were maintained at a*ext -6 to +3; and b*ext -5 to +3 both in transmission color and reflection color. Further the thickness of the functional layer 50 was varied to get a wide range of transmission value: lowest of 7% and a highest of 65%.
  • the thickness of specifically the dielectric coating 120 was adjusted to maintain the internal reflection values below 10% for all said varying values of light transmission in the visible spectrum.
  • the metallic layer 100 based on Ti or Nb was maintained at thickness levels not greater than 4 nm.
  • first and second for dielectric coatings are defined starting from the substrate bearing the stack and with reference to the layers or coatings having the same function.
  • the dielectric coating closest to the substrate is the first dielectric coating
  • the next one moving away from the substrate is the second dielectric coating.
  • Thicknesses stated in the present document with no other specifications are physical, real or geometric thicknesses are expressed in nanometers (and not optical thicknesses).
  • the functional layer 50 satisfy the condition: the thickness of the functional layer 50 does not exceed 30 nm, inclusive of said value.
  • the thickness of the functional layer 50 is varied to achieve varying values of light transmission (TL) in the visible spectrum ranging between 7% and 65%.
  • the thickness of the functional layer 50 being NiCr ranges between 0.1 nm and 25 nm.
  • the thickness of the functional layer 50 being NiCrN ranges between 0.1 nm and 35 nm.
  • the functional layer 50 is partially or completely oxidized.
  • the metallic layer 100 deposited as over layer in contact with the functional layer 50 acts as a barrier layer.
  • the role of the barrier layer is conventionally to protect the functional layer from a possible degradation during the deposition of the second dielectric coating 120 and during high-temperature heat treatment of the bending and/or tempering type.
  • the barrier layer is selected from metallic layers based on a metal selected from Ti or Nb.
  • the barrier layer may undergo a partial or complete oxidation depending on their thickness and the nature of the layer that surround them, for example, at the time of the deposition of the next layer or by oxidation in contact with the underlying layer. Nevertheless, the barrier layer deposited in metallic form does not oxidize the functional layer 50 underlying it during deposition and/ or further processing such as heat treatment which is advantageous for obtaining the many desired optical and performance characteristics of the solar control coated article 500 of the present invention.
  • the metallic layer 100 satisfy the condition: the functional layer 50 is in contact with at least one metallic layer 100 selected from a barrier over layer (as illustrated in FIG. 1); and/or the functional layer 50 is in contact with a barrier under layer and a barrier over layer (as illustrated in FIG. 2); and/or the thickness of each barrier layer does not exceed 4 nm and ranges preferably between 0.1 nm and 4 nm.
  • the metallic layer 100 is preferably based on Ti and is deposited as a continuous layer or a discontinuous layer.
  • the metallic layer 100 based on Ti is deposited as a discontinuous layer with a preferred thickness of less than 2 nm, in a particular exemplary embodiment.
  • the dielectric coatings 20, 120 satisfy the condition: the thickness of the second dielectric coatings 120 is greater than or equal to the thickness of the first dielectric coating 20; and/or thickness of first dielectric coating 20 does not exceed 65 nm; and/or thickness of second dielectric coating 120 is greater than 45 nm and less than 78 nm; the two dielectric coatings 20, 120 comprise at least one dielectric layer based on a material selected from silicon nitride, titanium nitride, aluminum nitride or oxynitrides of silicon and aluminum, zinc oxide, tin and zinc oxide, tin oxide, titanium oxide, silicon oxide, titanium and tin oxide, alone or in combination; the two dielectric coatings 20, 120 each comprise one or combination of other dielectric layer.
  • the first dielectric coating 20 comprises at least one dielectric layer positioned below the functional layer 50; this dielectric layer has a barrier function and is based on oxides such as SiO2 and A12O3, silicon nitrides Si3N4 and AIN and oxynitrides SiOxNy and AlOxNy, most preferably silicon nitride optionally doped with aluminum, having a thickness not exceeding 65 nm.
  • the dielectric coating 20 may comprise two dielectric layers whose combined thickness does not exceed 65 nm.
  • the dielectric layer is placed directly below and in contact with the functional layer 50 if the additional metallic layer based on Ti or Nb is absent.
  • the dielectric layer is placed directly below but not in contact with the functional layer 50 if the additional metallic layer based on Ti or Nb is present.
  • the second dielectric coating 120 comprises at least one dielectric layer positioned above the first functional layer 50; this dielectric layer also has a barrier function and is based on oxides such as SiO2 and A12O3, silicon nitrides Si3N4 and AIN and oxynitrides SiOxNy and AlOxNy, most preferably silicon nitride optionally doped with aluminum, having a thickness ranging between 45 nm and 78 nm.
  • the dielectric coating 120 may comprise two dielectric layers whose combined thickness ranging between 45 nm and 78 nm. In all embodiments of the present invention, the dielectric coating 120 is placed above the functional layer 50 but not on direct contact with the functional layer 50 unlike the dielectric coating 20.
  • Dielectric layer having a barrier function should be understood as a layer made of a material capable of forming a barrier to the diffusion of sodium, oxygen and/or water at high temperature, originating from the ambient atmosphere or from the transparent substrate, toward the functional layer.
  • the constituent materials of the dielectric layer having a barrier function thus must not undergo chemical or structural modification at high temperature which would result in a modification to their optical properties.
  • the layer or layers having a barrier function are preferably also selected from a material capable of forming a barrier to the constituent material of the functional layer. The dielectric layers having a barrier function thus allow the stack to be subjected, without excessively significant optical change, to heat treatment, tempering or bending.
  • the stack of thin layers 200 comprises at least one protective layer 150 (as illustrated in FIG. 2) deposited farthest from the surface capable of being in contact with the atmosphere based on titanium zirconium nitride or oxynitirde, titanium zirconium oxide or titanium oxide, alone or in combination.
  • the protective layer generally has a thickness of less than 10 nm, more preferably less than 5 nm.
  • the stack of thin layer 200 comprises an optional additional metallic layer 100’ based on Ti or Nb placed directly under and in contact with the functional layer 50.
  • the stack of thin layers 200 comprises starting from the glass substrate 10: a first dielectric coating comprising one dielectric layer having a barrier function based on Si3N4; optionally a metallic layer based on Ti; a functional layer based on NiCr or NiCrN; a metallic layer based on Ti; a second dielectric coating comprising one dielectric layer having a barrier based on Si3N4; and optionally one protective layer based on TiZrO x .
  • the transparent substrates according to the present invention are preferably made of an inorganic rigid material, such as glass, or an organic material based on polymers (or made of polymer).
  • the substrate is preferably a sheet of glass or of glass-ceramic.
  • the substrate is preferably transparent, colorless (it is then a clear or extra-clear glass) or colored, for example colored blue, green, grey or bronze.
  • the glass is preferably of soda-lime-silica type, but it may also be made of glass of borosilicate or alumino-borosilicate type.
  • the substrate advantageously has at least one dimension greater than or equal to 1 m, or even 2 m and even 3 m.
  • the thickness of the substrate generally varies between 0.5 mm and 19 mm, preferably between 0.7 and 9 mm, in particular between 2 and 12 mm, or even between 4 and 6 mm.
  • the substrate may be flat or curved, or even flexible.
  • the material may undergo a high-temperature heat treatment such as an annealing, for example a flash annealing such as a laser or flame annealing, a tempering and/or a bending.
  • a high-temperature heat treatment such as an annealing, for example a flash annealing such as a laser or flame annealing, a tempering and/or a bending.
  • the temperature of the heat treatment is greater than 600°C, preferably greater than 650°C., and better still greater than 700°C.
  • the substrate coated with the stack may therefore be curved and/or tempered.
  • the invention also relates to a glazing comprising a solar control coated article 500 according to the invention.
  • a glazing comprising a solar control coated article 500 according to the invention.
  • the faces of a glazing are denoted starting from the outside of the building and by numbering the faces of the substrates from the outside towards the inside of the passenger compartment or room that it equips. This means that the incident solar light passes through the faces in the increasing order of their number.
  • the stack 200 is preferably positioned in the glazing so that the incident light coming from outside passes through the first dielectric coating 20 before passing through the functional layer 50.
  • the stack is not deposited on the face of the substrate that defines the external wall of the glazing but on the inner face of this substrate.
  • the stack is therefore advantageously positioned on face 2, face 1 of the glazing being the outermost face of the glazing, as is customary.
  • the material may be intended for applications that require the substrate coated with the stack to have undergone a heat treatment at a high temperature such as a tempering, an annealing or a bending.
  • the glazing of the invention may be in the form of monolithic, laminated or multiple glazing, in particular double glazing or triple glazing.
  • the stack is preferably deposited on face 2, that is to say that it is not on the substrate that defines the external wall of the glazing and more specifically on the inner face of this substrate.
  • a monolithic glazing comprises 2 faces; face 1 is on the outside of the building and therefore constitutes the external wall of the glazing, face 2 is on the inside of the building and therefore constitutes the internal wall of the glazing.
  • a multiple glazing comprises at least two substrates kept at a distance so as to delimit a cavity filled by an insulating gas.
  • the materials according to the invention are very particularly suitable when they are used in double glazings with enhanced thermal insulation (ETI).
  • a double glazing comprises 4 faces; face 1 is outside of the building and therefore constitutes the external wall of the glazing, face 4 is inside the building and therefore constitutes the internal wall of the glazing, faces 2 and 3 being on the inside of the double glazing.
  • a triple glazing comprises 6 faces; face 1 is outside of the building (external wall of the glazing), face 6 is inside the building (internal wall of the glazing) and faces 2 to 5 are on the inside of the triple glazing.
  • a laminated glazing comprises at least one structure of first substrate/sheet(s)/second substrate type. The stack of thin layers is positioned on at least one of the faces of one of the substrates. The stack may be on the face of the second substrate not in contact with the, preferably polymer, sheet. This embodiment is advantageous when the laminated glazing is assembled as double glazing with a third substrate.
  • the glazing according to the invention used as monolithic glazing or in a multiple glazing of double glazing type, has neutral and pleasant appearance in external reflection and transmission.
  • the internal reflection is kept lesser than 10%.
  • the glazing of the invention has colors in transmission in the L*a*b* color measurement system: a*T between -6 and 2, preferably between -4.0 and 1.0**; in a particular exemplary embodiment a*T is -2.9; b*T between -7.0 and 3, preferably between -6.0 and2.0; in a particular exemplary embodiment b*T is -5.8.
  • the glazing of the invention has colors in reflection on the external side in the L*a*b* color measurement system: a*ext between -5 and 3, preferably between -4.0 and 1.0; in a particular exemplary embodiment a* ext is -3.6; b* ext between -5 and 3, preferably between -4 and 2.0; in a particular exemplary embodiment b* ext is 1.8.
  • the glazing of the invention in the form of a glazing comprising the stack positioned on face 2 makes it possible to achieve, in particular, the following performances: a solar factor less than or equal to 70%, preferably less than or equal to 65%, and/or a light reflection on the internal side of less than or equal to 10%, preferably less than or equal to 8%, and/or neutral color in external reflection and transmission.
  • the stack is deposited by magnetron sputtering.
  • all the layers of the stack 200 are deposited by magnetron sputtering.
  • Stack of thin layers are deposited on substrates made of clear soda-lime glass with a thickness of 6 mm.
  • the functional layers are layers of NiCr
  • the metallic layers made of titanium (Ti)
  • the dielectric layers are based on silicon nitride (SisN ⁇
  • the protective layer is made of titanium zirconium oxide (TiZrOx).
  • Table 1 lists the materials and thicknesses in nanometers for each layer or coating that forms the stacks as a function of their position with respect to the substrate bearing the stack (final line at the bottom of the table).
  • the “Ref.” numbers correspond to the references from FIG. 1.
  • Table 2 lists the main optical characteristics measured when the glazings are part of monolithic structure, the stack being positioned on face 2 (face 1 of the monolithic glazing being the outermost face of the glazing, as is customary). For these monolithic glazings:
  • TL indicates: the light transmission in the visible region in %, measured according to the illuminant D65 Obs 2; a*T and b*T indicate the a* and b* colors in transmission in the L*a*b* system measured according to the illuminant D65 Obs 2 and measured perpendicularly to the glazing;
  • Rext indicates: the light reflection in the visible region in %, measured according to the illuminant D65 Obs 2 on the side of the outermost face, face 1; a*Rext and b*R ex t indicate the a* and b* colors in reflection in the L*a*b* system measured according to the illuminant D65 Obs 2 on the side of the outermost face and thus measured perpendicularly to the glazing;
  • Rint indicates: the light reflection in the visible region in %, measured according to the illuminant D65 Obs 2 on the side of the internal face, face 4; a*Rint and b*Rint indicate the a* and b* colors in reflection in the L*a*b* system measured according to the illuminant D65 Obs 2 on the side of the internal face and thus measured perpendicularly to the glazing.
  • Table 3 lists the materials and thicknesses in nanometers for each layer or coating that forms the stacks as a function of their position with respect to the substrate bearing the stack (final line at the bottom of the table).
  • the “Ref.” numbers correspond to the references from FIG. 1.
  • Table 3 Stack of thin layers
  • Solar Control and Optical Properties Table 4 lists the main optical characteristics measured when the glazings are part of monolithic structure, the stack being positioned on face 2 (face 1 of the monolithic glazing being the outermost face of the glazing, as is customary).
  • Sample 2 including a metallic layer of Ti according to the teachings of the present invention and comparative sample 2 without any metallic Ti layer were heat treated (tempered) at 630°C for about 6 minutes and the color
  • Table 6 lists the materials and thicknesses in nanometers for each layer or coating that forms the stacks as a function of their position with respect to 15 the substrate bearing the stack (final line at the bottom of the table).
  • the “Ref.” numbers correspond to the references from FIG. 1.
  • Table 7 lists the main optical characteristics measured when the glazings are part of monolithic structure, the stack being positioned on face 2 (face 1 of the monolithic glazing being the outermost face of the glazing, as is 5 customary).
  • Comparative sample 3 is to demonstrate how the introduction of the metallic Ti layer does not significantly impact the optical properties but only contributes to the improvement of chemical resistivity of the sample.
  • the metallic Ti layer used in the stack of thin layers 200 of the present invention can be deposited as a discontinuous layer at thickness ranges below 4 nm and this discontinuous islands of metallic Ti becomes a continuous layer when the layer thickness exceeds 4 nm.
  • the comparative sample 4 of this example has a continuous metallic Ti layer with thickness of 7 nm and the sample 4 prepared
  • the protective layer is made of titanium zirconium oxide (TiZrOx).
  • Table 10 lists the main optical characteristics measured when the glazings are part of monolithic structure, the stack being positioned on face 2 15 (face 1 of the monolithic glazing being the outermost face of the glazing, as is customary).
  • CASS test was performed as per ISO 9227:2012.
  • CASS solution was prepared by adding 5% NaCl salt in DI water following which 0.26 g/liter of dehydrated CuCh was added. Acetic acid was added to adjust the pH in the range of 3-3.1.
  • the temperature of the testing chamber was maintained at 50°C.
  • the microscopic images of the solar control coated article prepared according to the teachings of the present invention were observed initially (before testing) and after exposure to CASS solution for a period of 28 days (accelerated testing period) were compared to identify any visible defects or scratches. Samples were deemed to fail the test if the defect area was greater than 300 pm 2 and the number of defects were greater than 100 or the equivalent area for the image taken at lOx magnification in optical microscope.
  • Tempered comparative sample 2 was also exposed to CASS test. Microscopic images of the tempered comparative sample 2 revealed a lot of defects suggesting the degradation of the stack of thin layers resulting in significant degradation of the coating’s performance.
  • sample 2 including a metallic Ti layer
  • a metallic Ti layer showed no defects both for tempered as well as annealed samples. This demonstrates that the stack of thin layers is intact post the extended exposure and the performance of the coating is not impacted.
  • Example 7 Table 12 lists the materials and thicknesses in nanometers for each layer or coating that forms the stacks as a function of their position with respect to the substrate bearing the stack (final line at the bottom of the table).
  • the “Ref.” numbers correspond to the references from FIG. 2.
  • Sample 7 was constructed according to one embodiment of the present invention wherein the stack of layers comprise an additional metallic layer provided below the functional layer.
  • Solar Control and Optical Properties Table 13 lists the main optical characteristics measured when the glazings are part of monolithic structure, the stack being positioned on face 2 (face 1 of the monolithic glazing being the outermost face of the glazing, as is customary).
  • Table 13 illustrates that the introduction of an additional Ti layer below the functional layer also results in the desired properties of the solar control article according to the present invention and further the optical results of the heat treated solar control article and its counterpart are similar. Further it was also seen that the additional Ti layer does not influence the tempering shift in the sample and the results are similar.
  • the glazing described in the present disclosure finds application as a glazed element in building.
  • the glazing may form a monolithic, a double or triple glazing with the coating side of the glass arranged facing the closed space inside the multiple glazing.
  • the glazing may also form a laminated glazing whose stack of layers may be in contact with the thermoplastic adhesive material connecting the substrates, in general PVB.
  • the glazing according to the invention is, however, particularly useful when the multilayer stack is facing the outer environment, whether it is an insulated glazing or laminated glazing, but also optionally a multiple glazing.
  • the glazing may also be enameled.
  • the glazing of the present disclosure can also be annealed, strengthened, toughened, tempered or curved and/or bent.
  • the terms “comprises,” “comprising,” “includes,” “including,” “has,” “having” or any other variation thereof, are intended to cover a non-exclusive inclusion.
  • a method, article, or apparatus that comprises a list of features is not necessarily limited only to those features but may include other features not expressly listed or inherent to such method, article, or apparatus.
  • “or” refers to an inclusive-or and not to an exclusive-or. For example, a condition A or B is satisfied by any one of the following: A is true (or present) and B is false (or not present), A is false (or not present) and B is true (or present), and both A and B are true (or present).
  • TITLE A SOLAR CONTROL COATED ARTICLE WITH IMPROVED

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

La présente divulgation concerne un article revêtu de commande solaire comprenant un substrat transparent revêtu d'un empilement de couches minces sur au moins l'une de ses surfaces. L'empilement de couches minces comprend successivement, à partir du substrat, un premier revêtement diélectrique ; une couche fonctionnelle à base de NiCr ou de NiCrN placée au-dessus du premier revêtement diélectrique ; une couche métallique placée au-dessus de la couche fonctionnelle et en contact direct avec celle-ci ; et un second revêtement diélectrique placé au-dessus de la couche métallique. L'article revêtu de commande solaire peut être traité thermiquement, est durable, résistant à la corrosion et présente un aspect externe neutre en termes à la fois de réflexion et de transmission. De plus, l'article revêtu de commande solaire conserve une réflexion interne inférieure à 10 % pour des valeurs variables de transmission de lumière (TL) dans le spectre visible allant de 7 % à 65 %, lesdites valeurs étant incluses.
PCT/IN2021/051141 2020-12-08 2021-12-07 Article revêtu de commande solaire doté d'une résistance améliorée à la corrosion WO2022123595A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
MX2023006521A MX2023006521A (es) 2020-12-08 2021-12-07 Un articulo revestido de control solar con resistencia mejorada a la corrosion.
CONC2023/0007283A CO2023007283A2 (es) 2020-12-08 2023-06-01 Un artículo de control solar recubierto con resistencia mejorada a la corrosión

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202041053389 2020-12-08
IN202041053389 2020-12-08

Publications (1)

Publication Number Publication Date
WO2022123595A1 true WO2022123595A1 (fr) 2022-06-16

Family

ID=81974259

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2021/051141 WO2022123595A1 (fr) 2020-12-08 2021-12-07 Article revêtu de commande solaire doté d'une résistance améliorée à la corrosion

Country Status (3)

Country Link
CO (1) CO2023007283A2 (fr)
MX (1) MX2023006521A (fr)
WO (1) WO2022123595A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10294148B2 (en) * 2013-02-14 2019-05-21 Agc Glass Europe Solar control glazing
IN201941021773A (fr) * 2019-05-31 2020-12-04 Saint-Gobain Glass France

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10294148B2 (en) * 2013-02-14 2019-05-21 Agc Glass Europe Solar control glazing
IN201941021773A (fr) * 2019-05-31 2020-12-04 Saint-Gobain Glass France

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHENG-CHIA HUANG ET AL.: "Optical properties of tungsten and titanium oxide thin films prepared by plasma sputter deposition", SOLAR ENERGY MATERIALS & SOLAR CELLS, vol. 83, 2004, pages 15 - 28, XP004507467, DOI: 10.1016/j.solmat. 2003.06.01 5 *

Also Published As

Publication number Publication date
CO2023007283A2 (es) 2023-09-08
MX2023006521A (es) 2023-06-23

Similar Documents

Publication Publication Date Title
CA2475192C (fr) Revetement contre le soleil
EP3510003B1 (fr) Article revêtu présentant une couche réfléchissant les ir et son procédé de fabrication
TWI289139B (en) Reflective, solar control coated glass article
JP5426577B2 (ja) 改良された光透過率を有する太陽光保護ガラス
CN107709263B (zh) 设置有具有热性质的叠层的基板
US20100104840A1 (en) Low-E coated articles and methods of making same
US9546108B2 (en) Substrate coated with a stack of functional layers having improved mechanical properties
CN111247108B (zh) 提供有具有热性质的堆叠体的基材
EP3419943B1 (fr) Revêtement à faible émissivité destiné à des fenêtres sous climats froids
AU2018253120B2 (en) Solar control coating for laminated glazing
EP1597066B1 (fr) Article revetu susceptible d'etre traite par la chaleur avec une couche reflechissante a rayonnement infrarouge en nitrure de chromium et son procede de fabrication
WO2022113107A1 (fr) Matériau comprenant un empilement de couches minces pour des propriétés d'isolation thermique et esthétiques
WO2022123595A1 (fr) Article revêtu de commande solaire doté d'une résistance améliorée à la corrosion
WO2023199339A1 (fr) Vitrage comportant un empilement de couches minces comprenant une couche absorbante pour une faible réflexion interne et des couleurs variées de réflexion externe
WO2023105536A1 (fr) Article en verre de commande solaire pouvant être traité thermiquement comprenant du nitrure de titane et des couches fonctionnelles à base de niobium
WO2023079577A9 (fr) Article en verre de contrôle solaire présentant des propriétés optiques variables
EP4263457A1 (fr) Matériau comprenant un empilement de couches minces pour des propriétés esthétiques et d'isolation thermique
WO2024042551A1 (fr) Vitrage comprenant un empilement de couches minces à trois couches fonctionnelles à base d'argent et de nitrure de titane
WO2024042546A1 (fr) Vitrage comprenant un empilement de couches minces ayant une couche fonctionnelle à base d'argent et de multiples couches fonctionnelles à base de nitrure de titane
WO2024042545A1 (fr) Vitrage comprenant un empilement de couches minces comprenant deux couches fonctionnelles à base d'argent et de nitrure de titane
WO2023110926A1 (fr) Vitrage et son procédé de fabrication
WO2024042552A1 (fr) Vitrage comprenant un empilement de couches minces à deux couches fonctionnelles à base d'argent et de multiples couches fonctionnelles à base de nitrure de titane
WO2024028614A1 (fr) Vitre revêtue appropriée pour un vitrage automobile
CN114981226A (zh) 含基于氮化硅-或氮氧化硅的层和基于氧化锌锡的层的低发射率材料

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21902895

Country of ref document: EP

Kind code of ref document: A1

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112023011332

Country of ref document: BR

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 112023011332

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20230607

122 Ep: pct application non-entry in european phase

Ref document number: 21902895

Country of ref document: EP

Kind code of ref document: A1