Mildew-proof coated glass

Abstract

The utility model provides mildew-proof coated glass, which belongs to the field of coated glass, and comprises a glass substrate, a coating layer and a coating layer, a mildew-proof structure; the mould-proof structure comprises a mould-proof layer plated on one side of the air surface of the glass substrate, the mould-proof layer is a silicon nitride dielectric film layer, the thickness of the silicon nitride dielectric film layer is 10-12nm, the silicon nitride dielectric film layer covers the glass substrate in a vacuum magnetron sputtering physical coating mode, and the glass substrate is sodium-calcium-silicon float white glass with the thickness of 6mm. According to the utility model, a vacuum magnetron sputtering physical coating method is adopted, and the coated silicon nitride film layer is compact in structure and can cover holes in the surface of the glass, so that water molecules in the air are isolated from sodium, calcium and alkali ions on the surface of the glass, and the glass is effectively prevented from mildewing.

Description

TECHNICAL FIELD

[0001] The utility model relates to a coated glass technical field especially relates to a kind of antifungal coated glass. BACKGROUND

[0002] Glass matrix is that quartz sand, limestone, soda ash etc. are fused at high temperature and then float on the surface of liquid tin with greater specific gravity than itself, and then be drawn into annealing kiln, and the flat plate float glass obtained after annealing and cutting is sodium calcium silicon float glass. The main components are sodium oxide, calcium oxide and silicon oxide. The surface of float glass in production process contacts with liquid tin, and the surface contacting with air is called air face. Sodium calcium silicon float glass will appear rainbow, white spot, white fog and other weathering phenomena affecting transparency, namely commonly known as mildew, in high temperature and high humidity environment without ventilation for a long time. According to the three-stage theory of glass mildew weathering of chemist Waters and Adams, first, glass surface adsorbs moisture, second, sodium calcium alkali ions on glass surface and H+ or OH- in adsorbed water exchange ions, and form alkali layer such as CaOH and NaOH on surface, and finally, NaOH and other alkali layer erodes the main silicon-oxygen skeleton of glass body, breaks silicon-oxygen bond and forms weathering and mildew. The essence of glass mildew is that glass surface structure, composition and surface energy change under the interaction of water molecules at certain temperature and humidity.

[0003] There are many scenes in the production, storage and transportation and use process of float glass that are difficult to change the temperature and humidity conditions of the environment, such as: glass storage and transportation in the plum rain season in the south, high-humidity environment during installation of shield door glass in subway construction, etc. Glass mildew causes great loss to glass production and use enterprises.

[0004] Therefore, the application provides an antifungal coated glass. UTILITY MODEL CONTENT

[0005] In view of the deficiencies in the prior art, the utility model provides an antifungal coated glass.

[0006] The embodiment of the utility model provides an antifungal coated glass, which comprises:

[0007] Glass matrix;

[0008] Antifungal structure; the antifungal structure comprises an antifungal layer plated on the air side of the glass matrix.

[0009] Further, the antifungal layer is a silicon nitride dielectric film layer.

[0010] Further, the thickness of the silicon nitride dielectric film layer is 10-12 nm.

[0011] Further, the silicon nitride dielectric film layer is coated on the glass substrate by vacuum magnetron sputtering physical vapor deposition.

[0012] Further, the glass substrate is 6mm sodium calcium silicon float white glass.

[0013] Further, when the vacuum magnetron sputtering physical vapor deposition is used, a medium frequency power supply and a rotating cathode are used for sputtering deposition in an argon atmosphere of 500 SCCM and a nitrogen atmosphere of 600 SCCM, the power is 35KW, and the glass walking speed is 2.8m / min.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1, the utility model discloses a vacuum magnetron sputtering physical vapor deposition method, and the plated silicon nitride film layer structure is dense and can cover the glass surface cavity, and the contact between the moisture in the air and the sodium calcium alkali ions on the glass surface is isolated, and the glass mildew is effectively prevented.

[0016] 2, the silicon nitride film layer of the utility model is a dielectric film with extremely low visible light absorption, which ensures the high light transmittance of the glass.

[0017] 3, the thickness of the silicon nitride film layer of the utility model is set, which ensures that the appearance color of the glass after plating is consistent with the base glass and has good transparent visual effect.

[0018] 4, the silicon nitride film layer material of the utility model has extremely low production cost, which ensures that large-scale industrial production can be realized. DRAWINGS

[0019] Figure 1 It is a structure diagram of the anti-mildew coated glass in the embodiment of the utility model.

[0020] In the above drawings, 1 is a glass substrate, and 2 is a silicon nitride dielectric film layer. DETAILED DESCRIPTION

[0021] In order to make the personnel in the art better understand the technical scheme of the utility model, the technical scheme of the utility model will be described clearly and completely in combination with the drawings of the utility model. Based on the embodiment in the application, other similar embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the application.

[0022] Referring to Figure 1 The embodiment of the utility model provides an anti-mildew coated glass, which comprises:

[0023] A glass substrate 1.

[0024] The anti-mildew structure comprises an anti-mildew layer plated on the air side of the glass substrate 1.

[0025] In the present application, the anti-mildew layer is a silicon nitride dielectric film layer 2.

[0026] In the present application, the thickness of the silicon nitride dielectric film layer is 10-12 nm.

[0027] In the present application, the silicon nitride dielectric film layer is coated on the glass substrate 1 by vacuum magnetron sputtering physical plating.

[0028] In the present application, the glass substrate 1 is 6mm sodium calcium silicon float white glass.

[0029] In the present application, when vacuum magnetron sputtering physical plating is used, a medium frequency power supply is used to add a rotating cathode for sputtering deposition in an argon gas atmosphere of 500 SCCM and a nitrogen gas atmosphere of 600 SCCM, with a power of 35KW and a glass walking speed of 2.8m / min. Embodiment

[0030] An anti-mildew plating glass prepared by off-line vacuum magnetron sputtering technology comprises a glass substrate 1, which is 6mm sodium calcium silicon float white glass, and a silicon nitride film layer 2 plated on the air side of the glass substrate 1, with a deposition thickness of 11nm.

[0031] The implementation process comprises the following steps:

[0032] (1) The glass substrate 1 is cleaned and dried;

[0033] (2) Pre-vacuum transition;

[0034] (3) A silicon nitride film layer 2 with a thickness of 11nm is plated on the air side of the glass substrate 1. When plating the film layer, a medium frequency power supply is used to add a rotating cathode for sputtering deposition in an argon gas atmosphere of 500 SCCM and a nitrogen gas atmosphere of 600 SCCM, with a power of 35KW and a glass walking speed of 2.8m / min;

[0035] (4) Pre-vacuum transition;

[0036] (5) Product detection.

[0037] The visible light transmittance of the coated glass is 88%, which is almost the same as the transmittance 88.2% of the 6mm uncoated float glass substrate 1, and the high transmittance of the glass is maintained. The transmittance color values a:-0.8 b:-0.1 are the same as the transmittance color a:-1 b:-0.2 of the 6mm uncoated float glass substrate 1, and the color difference value is 0.2 CIELAB, and the color is highly consistent. The coated glass and the uncoated float glass are placed in a high temperature and high humidity test chamber with a humidity range of 40%-100% and a temperature range of 20-70℃, and after 3000, 6000 and 9000 hours of testing, it is found that the uncoated float glass has point-shaped mildew after 3000 hours, sheet-shaped mildew after 6000 hours, and whole surface white haze after 9000 hours, while the coated glass does not have the above-mentioned phenomena.

[0038] Finally, it should be pointed out that the above examples are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. Anti-mold coated glass, characterized in that, The invention relates to a glass substrate (1) with an anti-fungus structure, comprising: a glass substrate (1); an anti-fungus structure, which comprises an anti-fungus layer plated on the air side of the glass substrate (1).

2. The mold-proof coated glass according to claim 1, wherein In the invention: the anti-fungus layer is a silicon nitride dielectric film (2).

3. The mold-proof coated glass according to claim 2, characterized in that, In the invention: the thickness of the silicon nitride dielectric film (2) is 10-12 nm.

4. The mold-proof coated glass according to claim 3, characterized in that, In the invention: the silicon nitride dielectric film is coated on the glass substrate (1) by vacuum magnetron sputtering physical coating.

5. The mold-proof coated glass according to claim 1, wherein In the invention: the glass substrate (1) is 6 mm sodium calcium silicon float white glass.

6. The mold-proof coated glass according to claim 4, wherein In the invention: when the vacuum magnetron sputtering physical coating is used, a medium frequency power supply is used to add a rotating cathode in an argon atmosphere of 500 SCCM and a nitrogen atmosphere of 600 SCCM, the power is 35 KW, and the glass walking speed is 2.8 m / min.

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