WO2020012502A1 - Articles en verre de contrôle solaire - Google Patents

Articles en verre de contrôle solaire Download PDF

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Publication number
WO2020012502A1
WO2020012502A1 PCT/IN2019/050510 IN2019050510W WO2020012502A1 WO 2020012502 A1 WO2020012502 A1 WO 2020012502A1 IN 2019050510 W IN2019050510 W IN 2019050510W WO 2020012502 A1 WO2020012502 A1 WO 2020012502A1
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WO
WIPO (PCT)
Prior art keywords
solar control
glass article
control glass
heat treatable
transparent
Prior art date
Application number
PCT/IN2019/050510
Other languages
English (en)
Inventor
Soumyadeep MISRA
Arpan BASU
Shrijit Sudhir KULKARNI
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 EP19834651.2A priority Critical patent/EP3821283A4/fr
Priority to MX2021000406A priority patent/MX2021000406A/es
Publication of WO2020012502A1 publication Critical patent/WO2020012502A1/fr
Priority to PH12020552198A priority patent/PH12020552198A1/en
Priority to CONC2020/0016528A priority patent/CO2020016528A2/es

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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
    • C03C17/34—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
    • 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
    • B32B17/10082—Properties of the bulk of a glass sheet
    • B32B17/1011—Properties of the bulk of a glass sheet having predetermined tint or excitation purity
    • 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
    • B32B17/10201—Dielectric 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
    • B32B17/1055—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
    • 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
    • B32B17/1077—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 polyurethane
    • 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
    • B32B17/10788—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 ethylene vinylacetate
    • 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
    • C03C23/00—Other surface treatment of glass not in the form of fibres or filaments
    • C03C23/007—Other surface treatment of glass not in the form of fibres or filaments by thermal treatment
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/26—Reflecting filters
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/416—Reflective
    • 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
    • B32B2419/00—Buildings or parts thereof
    • 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
    • C03C2218/00—Methods for coating glass
    • C03C2218/30—Aspects of methods for coating glass not covered above
    • C03C2218/32—After-treatment

Definitions

  • the present disclosure relates, in general to a coated glass article, and more specifically to a heat treatable solar control glass article having a rose or copper colored external reflection.
  • Solar control coatings having a layer stack of glass/Si3N4/NiCr/Si 3 N4 are known in the art, where the metallic NiCr layer is the sole infrared (IR) reflecting layer in the coating.
  • the NiCr IR reflecting layer may be nitrided. While such layer stacks provide efficient solar control and low DE* values (more color matchability), the reflection color obtained by such layer stacks has never been worked upon.
  • a known solar control coating having a layer stack of glass/Si 3 N4/NiCrN/Si 3 N4 has an external a* value in a range between -8 to +2; and b* value in a range between -2 to +8.
  • U.S. patent number 6926967 describes a heat treatable coated article with NiCrN acting as the IR reflecting layer. While the invention relates to achieving approximately the same color characteristics as viewed by the naked eye before and after heat treatment, the external reflection color obtained by the coated articles is not explicitly disclosed.
  • the glass article coated with the solar control coating has an external glass side a* value ranging between 0 to -2.5 and b* value ranging between 0 to 3; and transmission a* value ranging between 0 to 2 and b* value ranging between -3 to -9.
  • the examples described in the patent disclose rather the color change (DE*) after heat treatment. However, a glass article having an external a* and b* value equal to 0 would exhibit a neutral color and a glass article having an external a* and b* equal to -2.5 and 3, respectively would exhibit a slight greenish yellow color.
  • a laminated glazing provided with a stack of thin layers for solar control comprising the layers Si 3 N 4 / NiCrN/ Si 3 N 4 on the surface of the glass.
  • the glazing is reported to have a neutral reflectance to not cause any inconvenience to the users.
  • the color of the external and internal refection of these coated articles can be improved upon by working on the dielectric layers of the solar control layer stack.
  • the external reflection of the solar control coated articles can be varied by varying the coating thickness of the S13N4 layers of the solar control layer stack which unfortunately result in undesirable interferences in the multilayer coating.
  • the present disclosure relates to a heat treatable solar control glass article that comprises of a thin multilayer stack comprising an alloy nitride functional layer sandwiched between two transparent dielectric layers provided on one side of a transparent substrate.
  • the thickness of the alloy nitride functional layer and the dielectric layer is designed in such a way that it gives rose or copper colored external appearance on the other side of the transparent substrate while retaining its solar control properties and low DE* value, without undue interferences to the other properties of the multilayer stack.
  • these coatings can block part of the solar spectra very efficiently in addition to having a rose or copper colored appearance from outside the building.
  • coated articles may be used as heat-treated and non-heat-treated articles and when heat- treated exhibit a high color matchability to their non-heat-treated counterparts.
  • the light transmission from exterior to interior of a building incorporated with these heat treatable solar control glass articles is also decreased thereby reducing glare for the building occupants.
  • a heat treatable solar control glass article having rose or copper color glass side reflection comprising a transparent substrate having a first surface provided with a thin multilayer coating.
  • the multilayer coating comprises of one or more nickel or niobium alloy nitride functional layers, each sandwiched between two transparent dielectric layers.
  • the thickness of the dielectric layer provided above the functional layer is greater than 100 nm and less than 160 nm and that of the dielectric layer provided above the transparent substrate is greater than 10 nm and less than 40 nm.
  • FIG. 1 illustrates a heat treatable solar control glass article, according to one embodiment of the present disclosure
  • FIG. 1A illustrates a heat treatable solar control glass article, according to another embodiment of the present disclosure
  • FIG. 2 illustrates a transparent substrate, according to one embodiment of the present disclosure
  • FIG. 3 illustrates a rose or copper colored solar control glass article, according to another embodiment of the present disclosure.
  • Embodiments disclosed herein are related to heat treatable solar control glass articles having rose or copper color glass side reflection.
  • FIG. 1 A heat treatable solar control glass article 100 according to one embodiment of the present disclosure is illustrated in FIG. 1.
  • the heat treatable solar control glass article 100 comprises of a glass substrate 110 provided with a multilayer coating 200.
  • the multilayer coating 200 comprises of at least one nickel or niobium alloy nitride functional layer 120, each sandwiched between two transparent dielectric layers l30a, l30b.
  • the dielectric layer l30a is in direct contact with the glass substrate 110 and the dielectric layer l30b is provided above the alloy nitride functional layer 120.
  • the alloy nitride functional layer 120 comprises at least one nitride of a metal alloy selected from the group consisting of NbCr, NiCr, NiCrMo and NbZr.
  • the alloy nitride functional layer 120 comprises of nickel, chromium and nitrogen.
  • the transparent dielectric layers l30a, l30b are based on aluminium nitride, aluminium oxynitride, silicon nitride or silicon oxynitride or silicon aluminium nitride, tin oxide, a mixed oxide of zinc and tin or titanium oxide.
  • the transparent dielectric layers l30a, l30b is silicon nitride.
  • the multilayer coating 200 may further comprise an overlayer 140 provided above the transparent dielectric layer (l30b).
  • FIG. 1A illustrates heat treatable solar control glass article 100 according to one other embodiment of the present disclosure.
  • the overlayer 140 comprises of at least one metal oxide selected from the group consisting of titanium, chromium or zirconium or their alloy or combination thereof.
  • the overlayer 140 if present improves the mechanical durability of the multilayer coating 200 such as scratch resistance etc. However, the optical properties of the multilayer coating 200 remain unchanged.
  • the thickness of the nickel or niobium alloy nitride functional layer 120 is greater than 5 nm and less than 20 nm. The thickness of the nickel or niobium alloy nitride functional layer 120 is adjusted to obtain a desired light transmission through the heat treatable solar control glass article 100. In another embodiment of the present disclosure, the thickness of the transparent dielectric layers l30a, l30b is adjusted to optimize the reflectance and color of the transparent glass substrate 110.
  • the thickness of the dielectric layer l30b provided above the nickel or niobium alloy nitride functional layer 120 is greater than 100 nm and less than 160 nm and the thickness of the dielectric layer l30a in direct contact with the glass substrate 110 is greater than 10 nm and less than 40 nm.
  • the increased thickness of the dielectric layer l30b results in a positive a* and b* values (measured on the glass side G) ranging between (+ 8 and +12) and (+2 and +12), respectively.
  • the multilayer coating 200 is applied on the transparent glass substrate 110 by physical vapor deposition using magnetron sputtering. In alternate embodiments, other suitable coating techniques may be used to obtain multilayer coating 200.
  • FIG. 2 illustrates a glass substrate 110 provided with the multilayer coating 200 of the present disclosure.
  • the glass substrate 110 may be a clear glass or a tinted glass.
  • the multilayer coating 200 is provided on the coating side (C) 203 of the transparent substrate 110.
  • the glass side (G) 202 opposite to the coating side (C) 203 of the transparent substrate 110 exhibits a rose color reflection or a copper color reflection depending on the thickness of the dielectric layer l30a, 130b when viewed from outside the building.
  • the thickness of the dielectric layer l30b provided above the nickel or niobium alloy nitride functional layer 120 is increased to increase the a* value (measured on the glass side G) of the heat treatable solar control glass article 100.
  • a positive a* (a*G ⁇ l0) value gives a reddish appearance on the glass side (G) 202 opposite to the coating side (C) 203 (provided with the multilayer coating 200) of the transparent substrate 110 which contributes to the rose/ copper color reflection of the heat treatable solar control glass article 100 on the glass side (G) 202.
  • b* value (measured on the glass side G) is also engineered to be a positive value.
  • a positive b* value (b*G ⁇ 3) in combination with a positive a* value (preferably, a*G>b*G) results in rose color reflection of the heat treatable solar control glass article 100 on the glass side (G) 202.
  • b* value (b*G ⁇ l0) in combination with a positive a* value (preferably, a*G>b*G) results in copper color reflection of the heat treatable solar control glass article 100 on the glass side 202.
  • the light transmission of the heat treatable solar control glass article 100 ranges between 10% and 60% depending on the thickness of alloy nitride functional layer 120.
  • a heat treatable solar control glass article having rose or copper colored external reflection 300 is illustrated in FIG. 3.
  • the heat treatable solar control glass article having rose or copper colored external reflection 300 comprises of a transparent glass substrate 110 provided with a multilayer coating 200 comprising a nickel chromium nitride layer 302 sandwiched between two transparent dielectric layers 303a, 303b based on silicon nitride.
  • the thickness of the nickel chromium nitride layer 302 ranges between 5 nm and 20 nm.
  • the nickel chromium nitride layer 302 acts as the IR blocking layer of the multilayer coating 200 and attributes to the solar control properties of the heat treatable solar control glass article having rose or copper colored external reflection 300.
  • the solar control properties depend entirely on the thickness of the nickel chromium nitride layer 302
  • the light transmission (TL) of the heat treatable solar control glass article having rose or copper colored external reflection 300 is invariably proportional to the thickness of the nickel chromium nitride layer 302.
  • a thickness range between 5 nm and 20 nm of the nickel chromium nitride layer 302 provides for the desired light transmission (TL) while also maintaining the solar control properties of the heat treatable solar control glass article having rose or copper colored external reflection 300.
  • the thickness of the silicon nitride layer 303a present above the transparent glass substrate 110 ranges between 10 nm and 40 nm and the thickness of the silicon nitride layer 303b present above the nickel chromium nitride layer 302 ranges between 100 nm and 160 nm.
  • the silicon nitride dielectric layer 303a, 303b contribute to the reflection color of the heat treatable solar control glass article having rose or copper colored external reflection 300 and hence are designed in such a way that the glass side G of the transparent glass substrate 110 reflects a rose color or copper color. Consequently, the coating side C of the transparent glass substrate 110 reflects a greenish yellow color.
  • the multilayer coating 200 has -10% external reflection and provides a very subtle appearance.
  • the heat treatable solar control glass article having rose or copper colored external reflection 300 may be enameled. In multiple aspects of the embodiment, the heat treatable solar control glass article having rose or copper colored external reflection 300 may be strengthened, toughened or heated to a temperature ranging between 500 °C and 750 °C.
  • the multilayer coating 200 is heat treatable and the transparent glass substrate 110 coated with the multilayer coating 200 can be heat treated to a temperature as high as 630 °C for about 9 minutes.
  • the DE* value (change in color of the heat treatable solar control glass article having rose or copper colored external reflection 300 before and after heat treatment) is less than 3.5.
  • the emissivity of the heat treatable solar control glass article having rose or copper colored external reflection 300 gets reduced slightly after heat treatment.
  • the heat treated solar control glass article having rose or copper colored external reflection exhibits a higher IR reflection compared to standard glass.
  • the heat treatable solar control glass article 300 having rose or copper colored external reflection and the heat treated solar control glass article 300 having rose or copper colored external reflection exhibit high durability values.
  • a composite glazing comprising a plurality of glass substrates bonded together by a polymeric interlayer.
  • One or more glass substrates of the plurality of glass substrates can be a rose or copper colored solar control glass article 300 or a heat treated rose or copper colored solar control glass article.
  • the polymeric interlayer is made of polyvinyl butyral (PVB) and/or other organic polymers selected from the group consisting of polyurethane and/or ethylvinylacetate (EVA) and/or polyvinyl chloride and/or polyester and/or polyethylenevinylacetate (PET) and/or polycarbonate and/or polypropylene and/or polyethylene and/or polyurethacrylate or their combinations thereof.
  • PVB polyvinyl butyral
  • EVA ethylvinylacetate
  • PET polyethylenevinylacetate
  • polycarbonate and/or polypropylene and/or polyethylene and/or polyurethacrylate or their combinations thereof ethylvinylacetate
  • the layer stacks were deposited by magnetically enhanced (magnetron) sputtering at room temperature on a transparent glass substrate having a thickness of 6 mm.
  • a clear glass substrate and a green tinted glass substrate were coated with the below shown layer stacks:
  • Layer Stack 1 Glass // Si 3 N 4 (33 nm )/ NiCrN x (9 nm )/ Si 3 N 4 (141 nm)
  • R ext External reflection
  • a*G, b*G a*, b* values measured on the external side, i.e., the glass side
  • Ri nt Internal reflection
  • a*C, b*C a*, b* values measured on the internal side, i.e., the coating side
  • the layer stack 1 exhibited a rose colored appearance on the glass side (that is on the building exterior) and a greenish yellow color on the coating side (that is on the building interior) when provided on a clear glass substrate.
  • the layer stack 1 was provided on a green tinted glass substrate, although the glass side reflection of the coated glass substrate appears reddish, the desired rose color reflection was better obtained while using a clear glass substrate.
  • layer stack 1 having a decreased NiCrN x thickness recorded a light transmission (T L ) of 31%.
  • Transparent glass has an emissivity of 89%, whereas the rose colored solar control glass article according to the embodiment of the present disclosure has an emissivity as less as 60%.
  • the brightness of the external color reflected by the coated glass substrates may be varied by varying the reflection values (R ext ).
  • Layer Stack 2 Glass // Si 3 N 4 (33 nm)/ NiCrN x (11.4 nm )/ Si 3 N 4 (134.4 nm)
  • R ext External reflection
  • a*G, b*G a*, b* values measured on the external side, i.e., the glass side
  • Ri nt Internal reflection
  • a*C, b*C a*, b* values measured on the internal side, i.e., the coating side
  • Glass substrates coated with layer stack 2 exhibited a copper colored appearance on the glass side (G).
  • the internal reflection (Rmt) was found to be high at 38%.
  • the external reflection (R ex t) is lower making the reflection color of the heat treatable solar control glass subtle in appearance.
  • the brightness of the external color reflected by the coated glass substrates may be varied by varying the reflection values (R ex t).
  • Erichsen Brush Test The brush test was used to evaluate the resistance of the layer stacks to erosion caused by scrubbing. In this test a soft brush is rubbed against the coating where the coating is submerged in the water. This test is done to test mechanical robustness against washing machine brushes during processing.
  • the samples were tempered at a temperature of 630 °C after the
  • the samples coated with layer stack 1 and layer stack 2 were first tempered at a temperature above 630 °C and then subjected to the Erichsen brush test procedure. Again the samples did not show any sign of minor scratch or coating erosion.
  • Taber abrasion test was used for performing accelerated wear resistance testing. It involved mounting a flat sample of approximately 100 mm 2 to a turntable platform that rotate on a vertical axis at a fixed speed. The wear action was carried out by two rotating abrading wheels supported on a loading arm which applied 250 grams pressure against the specimen, exclusive of the weight of the wheel in contact with sample. The transmission before and after the test were measured to calculate the overall change in transmission of the test samples. The results of mechanical durability studies are summarized in Table 5.
  • Layer Stack 3 Glass// S13N4 (33 nm )/ NiCrNx (9 nm )/ S13N4 (95 nm)
  • Layer Stack 4 Glass// S13N4 (33 nm)/ NiCrN x (9 nm)/ S13N4 (165 nm)
  • R ext External reflection
  • a*G, b*G a*, b* values measured on the external side, i.e., the glass side
  • Ri nt Internal reflection
  • a*C, b*C a*, b* values measured on the internal side, i.e., the coating side
  • Glass substrate coated with layer stack 3 showed yellow color reflection from its b*G value and therefore exhibited a golden color external reflection.
  • glass substrate coated with layer stack 4 exhibited a purple color external reflection.
  • the heat treatable solar control glass article 100 of the present disclosure can be used in a monolithic, double or triple glazing. These glazings are installed in such a way that the multilayer coating is preferably on face 2, the faces of substrates being numbered from outside to the inside of the building or room which is equipped therewith, giving it a solar radiation protection effect. These glazings exhibit an emissivity value equal to or less than 80%.
  • the heat treatable solar control glass article 100 can also be used in building wall cladding panel of curtain walling for interior applications. Further the heat treatable solar control glass article 100 can also be used as a side window, rear window or sunroof for an automobile or other vehicle.
  • the heat treatable solar control glass article 100 of the present disclosure can also be enameled, strengthened or toughened and used for building interior applications. The durability studies of these heat treatable solar control glass article 100 provide for a longer life of these articles. Further the heat treatable solar control glass article 100 because of its solar control property and aesthetically improved appearance could also be used as side window, rear window or sunroof for an automobile or other vehicles. Furthermore, the heat treatable solar control glass article 100 of the present disclosure can be used to produce composite glazing viz. laminated glazing and additionally has the advantage of being able to be used as annealed, heat strengthened and tempered glass articles.
  • 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).

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Optics & Photonics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Thermal Sciences (AREA)
  • Surface Treatment Of Glass (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne un article en verre de contrôle solaire à traitement thermique (100) ayant une réflexion côté verre de couleur cuivre ou rose comprenant un substrat en verre transparent (110) muni d'un revêtement multicouche (200) ayant des propriétés de contrôle solaire. Le revêtement multicouche (200) comprend une ou plusieurs couches fonctionnelles de nitrure d'alliage de nickel ou de niobium (120), chacune prise en sandwich entre deux couches diélectriques transparentes (130a, 130b). L'épaisseur de la couche diélectrique (130b) disposée au-dessus de la couche fonctionnelle (120) est supérieure à 100 nm et inférieure à 160 nm et celle de la couche diélectrique (130a) disposée au-dessus du substrat transparent (110) est supérieure à 5 nm et inférieure à 20 nm. L'article en verre de contrôle solaire à traitement thermique (100) présente une réflexion colorée en rose ou cuivre sur le côté opposé au côté muni du revêtement multicouche.
PCT/IN2019/050510 2018-07-12 2019-07-10 Articles en verre de contrôle solaire WO2020012502A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP19834651.2A EP3821283A4 (fr) 2018-07-12 2019-07-10 Articles en verre de contrôle solaire
MX2021000406A MX2021000406A (es) 2018-07-12 2019-07-10 Articulos de vidrio de control solar.
PH12020552198A PH12020552198A1 (en) 2018-07-12 2020-12-17 Solar control glass articles
CONC2020/0016528A CO2020016528A2 (es) 2018-07-12 2020-12-28 Artículos de vidrio para control solar

Applications Claiming Priority (2)

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IN201841025968 2018-07-12
IN201841025968 2018-07-12

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WO2020012502A1 true WO2020012502A1 (fr) 2020-01-16

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EP (1) EP3821283A4 (fr)
CO (1) CO2020016528A2 (fr)
MX (1) MX2021000406A (fr)
PH (1) PH12020552198A1 (fr)
WO (1) WO2020012502A1 (fr)

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CN112549697A (zh) * 2020-12-23 2021-03-26 吴江南玻华东工程玻璃有限公司 一种正反面同色的夹层镀膜玻璃及其制备方法

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US9028956B2 (en) * 2010-04-22 2015-05-12 Centre Luxembourgeois De Recherches Pour Le Verre Et La Ceramique S.A. (C.R.V.C.) Coated article having low-E coating with absorber layer(s)
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DE102014114330B4 (de) * 2014-10-02 2017-11-02 Von Ardenne Gmbh Solar-Control-Schichtsystem mit neutraler schichtseitiger Reflexionsfarbe und Glaseinheit

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US6650478B1 (en) * 1999-08-20 2003-11-18 Cpfilms Inc. Optical filter for a window
US6926967B2 (en) 2001-05-03 2005-08-09 Guardian Industries Corp. Heat treatable coated articles with metal nitride layer and methods of making same
CN104379530A (zh) * 2012-06-19 2015-02-25 乐金华奥斯有限公司 低辐射透明层叠体及包含其的建筑材料

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See also references of EP3821283A4

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112549697A (zh) * 2020-12-23 2021-03-26 吴江南玻华东工程玻璃有限公司 一种正反面同色的夹层镀膜玻璃及其制备方法

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EP3821283A1 (fr) 2021-05-19
MX2021000406A (es) 2021-03-25
EP3821283A4 (fr) 2022-04-13
CO2020016528A2 (es) 2021-01-18
PH12020552198A1 (en) 2021-06-28

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