Temperable mirror glass and laminates thereof

Abstract

This utility model relates to a temperable mirror glass and its laminated product, belonging to the field of coated glass technology. It includes a glass substrate and a coating deposited on one side of the glass substrate using a vacuum magnetron sputtering process; the film structure of the coating, from the inside out, consists of a first dielectric layer Nb2O. x Second dielectric layer SiO2, functional layer, third dielectric layer Nb2O x The protective layer is ZrO2. This technical solution achieves the mirror function of the glass by rationally designing the thickness of each film layer, especially the geometric and optical thicknesses of the media layers with different refractive indices. The laminated glass products maintain good mirror-like characteristics while ensuring the physical and chemical properties of the glass are suitable for subsequent processing.

Description

Technical Field

[0001] This utility model relates to a temperable mirror glass and its laminated products, belonging to the field of coated glass technology. Background Technology

[0002] In the field of coated glass, tempered mirror glass has significant and unique application value in both furniture decoration and architecture. In furniture decoration, with people's increasing pursuit of quality and aesthetics in home life, tempered mirror glass has become an ideal material choice for many home decorations. In architecture, from the perspective of architectural design, tempered mirror glass possesses excellent mirror reflection effects, bringing unique visual effects to buildings, such as creating a sense of modernity, fashion, and high-end style. It can be applied to building facades, doors, windows, partitions, and other parts, enhancing the overall artistic appeal and visual impact of the building, and strengthening its quality and image.

[0003] Currently available silver and aluminum mirrors have several defects. Silver mirrors are prone to oxidation and blackening, have uneven reflectivity, poor weather resistance and storage durability, require high environmental conditions, have optical defects, and their protective layer is prone to problems. Aluminum mirrors have lower reflectivity, poor moisture resistance, are susceptible to corrosion, have low hardness and are easily worn, lack stability, and have a whitish color. These defects affect the performance and lifespan of the mirrors, leading to decreased image quality, damage to appearance, and difficulty in meeting high optical and decorative requirements.

[0004] In the environments where glass products are used, safety and durability are paramount. People need glass products with high strength and impact resistance to withstand accidental bumps and external impacts in daily use, reducing the risk of glass breakage and protecting the safety of family members and pets. Simultaneously, the glass surface also needs to have strong corrosion and wear resistance, resisting scratches and fading, resulting in a longer lifespan and reduced replacement frequency and maintenance costs. Utility Model Content

[0005] The purpose of this invention is to provide a temperable mirror glass and its laminated products.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A temperable mirror glass includes a glass substrate and a coating deposited on one side of the glass substrate using a vacuum magnetron sputtering process; the coating layer structure, from the inside to the outside, consists of a first dielectric layer Nb2O. x Second dielectric layer SiO2, functional layer, third dielectric layer Nb2O x , protective layer.

[0008] A further improvement to this utility model is that the functional layer can be a NiCr layer, a Ti layer, or a NiCrCu layer; the protective layer can be a ZrO2 layer or a SiZr layer. (SiO2 layer)

[0009] A further improvement to the technical solution of this utility model is as follows: when the functional layer is a NiCr layer, the thickness of the first dielectric layer is 53nm, the thickness of the second dielectric layer is 65nm, the thickness of the functional layer is 44nm, the thickness of the third dielectric layer is 72nm, and the protective layer is 35nm.

[0010] A further improvement to the technical solution of this utility model is as follows: when the functional layer is a Ti layer, the thickness of the first dielectric layer is 45nm, the thickness of the second dielectric layer is 55nm, the thickness of the functional layer is 34nm, the thickness of the third dielectric layer is 45nm, and the thickness of the protective layer is 35nm.

[0011] A further improvement to the technical solution of this utility model is as follows: when the functional layer is a NiCrCu layer, the thickness of the first dielectric layer is 60nm, the thickness of the second dielectric layer is 72nm, the thickness of the functional layer is 38nm, the thickness of the third dielectric layer is 65nm, and the thickness of the protective layer is 35nm.

[0012] A further improvement to the present invention is that it includes two pieces of glass and an intermediate layer sandwiched between the two pieces of glass; one of the pieces of glass uses the temperable mirror glass, and the coating of the temperable mirror glass is located on the side close to the intermediate layer.

[0013] A further improvement to the above-mentioned technical solution of this utility model is that the intermediate layer is a PVB film or an SGP film.

[0014] Due to the adoption of the above technical solution, the technical effects achieved by this utility model are as follows:

[0015] This utility model relates to temperable mirror glass and its laminated products. The temperable mirror glass is achieved through coating. By rationally designing the thickness of each coating layer, especially the geometric and optical thickness of the medium layers with different refractive indices, the glass mirror function is realized. At the same time, the mechanical stability is improved, which can significantly reduce scratches and abrasions in subsequent processing. In addition, the ability to withstand chemically corrosive substances is enhanced.

[0016] The laminated product of temperable mirror glass of this invention maintains good mirror function characteristics, while ensuring that the physical and chemical properties of the glass are easy to process later. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the film structure of the temperable mirror glass of this utility model;

[0018] Figure 2This is a schematic diagram of a laminated product made of temperable mirror glass according to this utility model. Figure 1 ;

[0019] Figure 3 This is a schematic diagram of a laminated product made of temperable mirror glass according to this utility model. Figure 2 . Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] This invention relates to a temperable mirror glass, which achieves the mirror effect by coating a functional film layer on one side of a glass substrate.

[0022] like Figure 1 As shown, the temperable mirror glass includes a glass substrate and a coating deposited on one side of the glass substrate using a vacuum magnetron sputtering process. The mirror effect is achieved by designing the structure of the coating layer. Specifically, as... Figure 1 As shown, the film structure from the inside out consists of the first dielectric layer Nb2O. x Second dielectric layer SiO2, functional layer, third dielectric layer Nb2O x , protective layer.

[0023] The protective layer serves to protect the glass and the film, and can be a ZrO2 layer or a SiZr layer.

[0024] The functional layer is the main film layer used to achieve the mirror glass effect. In specific implementations, there are three main options for the functional layer: NiCr layer, Ti layer, or NiCrCu layer.

[0025] When the functional layer is a NiCr layer, the first dielectric layer is Nb2O. x The first dielectric layer has a thickness of 53 nm, the second dielectric layer (SiO2) has a thickness of 65 nm, the functional layer has a thickness of 44 nm, and the third dielectric layer (Nb2O) has a thickness of 53 nm. x The thickness is 72nm, and the thickness of the protective ZrO2 layer is 35nm.

[0026] A further improvement to the technical solution of this utility model is as follows: when the functional layer is a Ti layer, the first dielectric layer is Nb2O. x The first dielectric layer has a thickness of 45 nm, the second dielectric layer (SiO2) has a thickness of 55 nm, the functional layer has a thickness of 34 nm, and the third dielectric layer (Nb2O) has a thickness of 45 nm. x The thickness is 45nm, and the thickness of the protective ZrO2 layer is 35nm.

[0027] When the functional layer is a NiCrCu layer, the first dielectric layer is Nb2O.x The first dielectric layer has a thickness of 60 nm, the second dielectric layer (SiO2) has a thickness of 72 nm, the functional layer has a thickness of 38 nm, and the third dielectric layer (Nb2O) has a thickness of 60 nm. x The thickness is 65nm, and the thickness of the protective ZrO2 layer is 35nm.

[0028] This temperable mirror glass is produced using a large-area glass coating production line. Utilizing vacuum magnetron sputtering, the aforementioned film structure is deposited onto the glass substrate under negative pressure using 23 cathode targets. The negative pressure environment should be below 5 x 10⁻⁶. -6E mbar. A new vacuum coating system is formed by accurately controlling the thickness of the dielectric layer, functional layer, and protective layer by controlling the power supply.

[0029] The specific process for each layer of each membrane is as follows:

[0030] The first dielectric layer is Nb2O sputtered using an AC rotating cathode sputtering method. x The target was sputtered in a nitrogen-oxygen atmosphere, Nb2O x The purity of the target should be ≥99.9%, Nb2O x Deoxidation treatment using Nb2O5 is required. x The value of X in the figure is 4.45 ± 0.1. This is used to improve the Nb2O content. x The refractive index of the film. The process gas should be mainly argon, supplemented with a small amount of oxygen, with an argon-oxygen ratio of 1000:30.

[0031] The second dielectric layer was deposited by sputtering a Si target in an argon-oxygen atmosphere using AC rotating cathode sputtering. The purity of the Si target should be ≥99%. A SiO2 thin film was deposited on a glass substrate using magnetron sputtering. As the oxygen-argon ratio (O2 / Ar) increased from 30% to 60%, the oxygen-silicon ratio (O / Si) of the film continuously increased from a severely oxygen-deficient 1.68:1 to 1.93:1, approaching the stoichiometric ratio of 2:1. Simultaneously, the average particle size decreased and became more uniform, the surface roughness decreased with increasing oxygen-argon ratio, and the refractive index and absorptivity of the film continuously decreased. When the oxygen content was 40%, the refractive index of the film approached the refractive index of silicon dioxide (1.46).

[0032] The functional layer can use metals or alloys such as NiCr / Ti / NiCrCu. It is sputtered in an argon atmosphere using a DC flat target. In the barrier layer, the NiCr target is a nickel-chromium alloy with Ni:Cr = 80:20; the Ti target is a 99.9% pure titanium target; and the NiCrCu target is a nickel-chromium-copper alloy with Ni:Cr:Cu = 80:10:10.

[0033] The third dielectric layer was deposited by sputtering a Si target in an argon-oxygen atmosphere using AC rotating cathode sputtering. The purity of the Si target should be ≥99%. A SiO2 thin film was deposited on a glass substrate using magnetron sputtering. As the oxygen-argon ratio (O2 / Ar) increased from 30% to 60%, the oxygen-silicon ratio (O / Si) of the film continuously increased from a severely oxygen-deficient 1.68:1 to 1.93:1, approaching the stoichiometric ratio of 2:1. Simultaneously, the average particle size decreased and became more uniform, the surface roughness decreased with increasing oxygen-argon ratio, and the refractive index and absorptivity of the film continuously decreased. When the oxygen content was 40%, the refractive index of the film approached the refractive index of silicon dioxide (1.46).

[0034] The fourth dielectric layer is Nb2O sputtered using an AC rotating cathode method. x The target was sputtered in a nitrogen-oxygen atmosphere, Nb2O x The purity of the target should be ≥99.9%, Nb2O x Deoxidation treatment using Nb2O5 is required. x The value of X in the figure is 4.45 ± 0.1. This is used to improve the Nb2O content. x The refractive index of the film. The process gas should be mainly argon, supplemented with a small amount of oxygen, with an argon-oxygen ratio of 1000:30.

[0035] The protective layer is formed by sputtering a ZrO2 / SiZrN2 target in an argon-oxygen or argon-nitrogen atmosphere using an alternating rotating cathode sputtering method. The purity of the ZrO2 target in the protective layer is 99.9%, and the process gas should be mainly argon with a small amount of oxygen supplemented, with an argon-oxygen ratio of 800:30. The Zr content in the SiZr target is 20%-38%, and the process gas is an argon-nitrogen mixture with an argon-nitrogen ratio of 600:800.

[0036] The following are specific examples:

[0037] Using vacuum magnetron sputtering deposition technology, the high refractive index dielectric layer uses Nb2O x A novel film system is constructed using SiO2 as the low-refractive-index dielectric layer, NiCr / Ti / NiCrCu metal or alloy as the functional layer, and ZrO2 as the protective layer. This system includes 21 dual-rotating AC cathodes, 2 DC planar cathodes, and a total of 23 target sites, on which Nb2O is sequentially deposited on a float glass substrate. x / SiO2 / NiCr / SiO2 / Nb2O x / ZrO2.

[0038] The production process parameters are as follows:

[0039]

[0040]

[0041]

[0042] After coating the glass substrate according to the above process parameters, laminated glass products can be manufactured. The coated glass products can then be cut, edge-ground, tempered, and then undergo further lamination processing.

[0043] The laminated glass product comprises two panes of glass and an interlayer sandwiched between them; one of the panes of glass uses the aforementioned temperable mirror glass, and during assembly, the coating of the temperable mirror glass is positioned on the side closest to the interlayer. Specifically, the interlayer can be a PVB film or an SGP film.

[0044] This technical solution achieves the glass mirror function by rationally designing the thickness of each film layer, especially the geometric and optical thickness of media layers with different refractive indices. The laminated glass products maintain good mirror function characteristics while ensuring that the physical and chemical properties of the glass are easy to process later.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A temperable mirror glass, characterized in that: This includes a glass substrate and a coating deposited on one side of the glass substrate using a vacuum magnetron sputtering process; the film structure of the coating, from the inside out, consists of a first dielectric layer, Nb2O. x Second dielectric layer SiO2, functional layer, third dielectric layer Nb2O x , protective layer; The functional layer can be a NiCr layer, a Ti layer, or a NiCrCu layer; the protective layer can be a ZrO2 layer or a SiZr layer. When the functional layer is a Ti layer, the thickness of the first dielectric layer is 45nm, the thickness of the second dielectric layer is 55nm, the thickness of the functional layer is 34nm, the thickness of the third dielectric layer is 45nm, and the thickness of the protective layer is 35nm. When the functional layer is a NiCr layer, the thickness of the first dielectric layer is 53nm, the thickness of the second dielectric layer is 65nm, the thickness of the functional layer is 44nm, the thickness of the third dielectric layer is 72nm, and the thickness of the protective layer is 35nm. When the functional layer is a NiCrCu layer, the thickness of the first dielectric layer is 60nm, the thickness of the second dielectric layer is 72nm, the thickness of the functional layer is 38nm, the thickness of the third dielectric layer is 65nm, and the thickness of the protective layer is 35nm.

2. A laminated article using the temperable mirror glass of claim 1, characterized in that: It includes two pieces of glass and an intermediate layer sandwiched between the two pieces of glass; one of the pieces of glass uses the temperable mirror glass, and the coating of the temperable mirror glass is located on the side close to the intermediate layer.

3. The laminated product of temperable mirror glass according to claim 2, characterized in that: The middle layer is either PVB film or SGP film.

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