High-transmittance LOWE coated glass

Abstract

The utility model relates to the field of glass products, in particular to high-light-transmittance LOWE coated glass, which solves the problem that the edge of a film layer of the LOWE coated glass is easy to lose efficacy, and comprises a glass substrate, a coating layer and a composite frame coated on the edges of the glass substrate and the coating layer, the coating layer comprises a bottom oxide layer, an Ag film layer and a top oxide layer which are arranged in a laminated manner, the edge of the coating layer is subjected to laser etching to form a passivation layer, the passivation layer is sequentially provided with a SiO2 layer and a fluorine-doped SnO2 layer from inside to outside, and the composite frame comprises a colloid sealing structure and a titanium-aluminum alloy frame, the colloid sealing structure is attached to the edges of the glass and the coating layer, and the titanium-aluminum alloy frame is arranged outside the colloid sealing structure. The utility model is applied to the production of LOWE glass.

Description

Technical Field

[0001] This utility model relates to the field of glass products, specifically to a high-transmittance LOWE coated glass. Background Technology

[0002] Low-emissivity glass, also known as low-emissivity glass, is a product with multiple layers of metal or other compound coatings on its surface. Depending on the coating, it has advantages in many aspects, such as heat control, cooling costs, and a comfortable balance of internal sunlight projection.

[0003] As shown in Chinese patent application CN 112159116 A, a neutral gray temperable double silver LOWE coated glass includes a glass substrate layer and a coating layer. Fourteen coating layers are sequentially deposited on the surface of the glass substrate using a vacuum magnetron sputtering method. The first coating layer is a ZTO coating layer, the second coating layer is an AZO coating layer, the third coating layer is a Ti coating layer, the fourth coating layer is an Ag coating layer, the fifth coating layer is a Ti coating layer, the sixth coating layer is an AZO coating layer, the seventh coating layer is a ZTO coating layer, the eighth coating layer is an AZO coating layer, the ninth coating layer is a Ti coating layer, the tenth coating layer is an Ag coating layer, the eleventh coating layer is a Ti coating layer, the twelfth coating layer is an AZO coating layer, the thirteenth coating layer is a ZTO coating layer, and the fourteenth coating layer is a ZrO2 coating layer.

[0004] The above describes the basic structure of current LOWE products. However, the edge sealing of this structure relies on sealant for the protection of the film layer. The edge sealing is prone to delamination due to long-term thermal expansion and contraction, leading to problems such as water seepage and oxidation. The silver layer is relatively sensitive to moisture, and if the edges are not completely sealed, they are easily corroded, resulting in increased emissivity and affecting service life. Utility Model Content

[0005] Therefore, this utility model provides a high-transmittance LOWE coated glass, which solves the problem of easy failure of the edge structure of the LOWE coated glass film.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0007] A high-transmittance LOWE coated glass includes a glass substrate, a coating layer, and a composite frame covering the edges of the glass substrate and the coating layer. The coating layer includes a bottom oxide layer, an Ag film layer, and a top oxide layer stacked together. The edges of the coating layer are laser-etched to form a passivation layer. The passivation layer is provided with a SiO2 layer and a fluorine-doped SnO2 layer from the inside to the outside. The composite frame includes a colloidal sealing structure that fits the edges of the glass and the coating layer, and a titanium-aluminum alloy frame disposed outside the colloidal sealing structure.

[0008] Preferably, the edge of the glass substrate is inclined inward from the side of the coating layer so that the passivation layer extends to the edge of the glass substrate.

[0009] Preferably, the titanium-aluminum alloy frame has an arc-shaped groove on its outer side, and the arc-shaped groove is filled with a moisture-proof filling layer, which is a silicon-based elastomer containing nano-SiO2 particles.

[0010] Preferably, the colloidal sealing structure includes a butyl rubber layer in contact with the edge of the glass substrate, a polysulfide rubber layer disposed outside the butyl rubber layer, and a molecular sieve desiccant layer in contact with the titanium-aluminum alloy frame.

[0011] Preferably, the colloidal sealing structure includes a butyl adhesive layer in contact with the edge of the glass substrate, a silicone adhesive layer disposed outside the butyl adhesive layer, and a molecular sieve desiccant layer in contact with the titanium-aluminum alloy frame.

[0012] Preferably, the glass substrate is float glass.

[0013] By adopting the aforementioned technical solution, the beneficial effects of this utility model are:

[0014] This technical solution improves upon the traditional edge-sealing structure of LOWE coated glass. It forms a dense SiO2 passivation layer (oxygen-silicon atomic ratio ≥1.8:1) through laser etching passivation to reduce the activity of silver ions within the Ag film. This, combined with the SiO2 layer outside the passivation layer and the fluorine-doped SnO2 layer, forms a gradient nanoscale seal. The composite coating structure covers the passivation layer to enhance corrosion resistance. A titanium-aluminum alloy frame structure provides rigid support for the entire glass, and the novel colloidal sealing structure combines sealing and stress buffering functions. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the glass in Embodiment 1 of this utility model;

[0016] Figure 2 for Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0017] Figure 3 This is a partially enlarged structural diagram of the glass edge sealing in Embodiment 2 of this utility model.

[0018] Reference numerals: 1. Glass substrate; 2. Coating layer; 21. Bottom oxide layer; 22. Ag film layer; 23. Top oxide layer; 2a. Passivation layer; 24. SiO2 layer; 25. Fluorine-doped SnO2 layer; 3. Colloidal sealing structure; 31. Butyl rubber layer; 32. Polysulfide rubber layer; 33. Molecular sieve desiccant layer; 4. Titanium-aluminum alloy frame; 41. Arc groove; 42. Moisture-proof filling layer. Detailed Implementation

[0019] The following will describe the implementation of this utility model in detail with reference to specific embodiments, so that the process of how this utility model uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0020] Example 1

[0021] refer to Figure 1 and Figure 2 A high-transmittance LOWE coated glass includes a glass substrate 1, a coating layer 2, and a composite frame covering the edges of the glass substrate 1 and the coating layer 2. The glass substrate 1 is usually float glass with a thickness of 3-19mm, serving as a support and basic optical medium. For details of the float glass base, see CN 112159116 A.

[0022] The coating layer 2 comprises a bottom oxide layer 21, an Ag film layer 22, and a top oxide layer 23 stacked together. The bottom oxide layer 21 can be TiO2 or ZnO, used to enhance the adhesion of the silver layer and adjust the color of light reflection. The Ag film layer 22 is the core functional layer with a thickness of about 6-15nm, which reduces emissivity by reflecting far-infrared rays through free electrons. The top oxide layer 23 can be SnO2 or SiNx, which functions to protect the silver layer from oxidation and simultaneously regulate transmittance and reflectivity. The addition of fluorine (FTO) to the top oxide layer reduces visible light reflection loss by about 2-3%, and the transmittance can be increased to over 85%. When producing more advanced products, an anti-reflection coating such as SiO2 can be added to the outermost layer to further reduce visible light reflection loss.

[0023] In traditional processes, the glass edges are cut and the film layer is removed, resulting in the glass edge sealing relying on sealant. Therefore, the present technical solution laser-etches a passivation layer 2a at the edge of the coating layer 2. The passivation layer 2a is provided with a SiO2 layer 24 and a fluorine-doped SnO2 layer 25 arranged sequentially from the inside to the outside, with the thickness maintained at 50-100mm, so as to fully cover the passivation layer 2a and improve corrosion resistance.

[0024] The outer sealing portion includes a colloid sealing structure 3 that fits the edge of the glass and the coating layer 2, and a titanium-aluminum alloy frame 4 disposed outside the colloid sealing structure 3. Specifically, the colloid sealing structure 3 includes a butyl adhesive layer 31 that contacts the edge of the glass substrate 1, a polysulfide adhesive layer 32 (or a silicone adhesive layer) disposed outside the butyl adhesive layer 31, and a molecular sieve desiccant layer 33 that contacts the titanium-aluminum alloy frame 4. The butyl adhesive layer 31, with a thickness of 0.4 mm, directly contacts the edge of the glass substrate 1 to block moisture. The polysulfide adhesive layer 32 (or silicone adhesive layer), with a thickness of 2 mm, provides mechanical strength. The molecular sieve desiccant layer 33 is pre-embedded in the titanium-aluminum alloy frame 4 during production, enabling the product to dynamically adsorb residual moisture. This technical solution improves the edge sealing structure of the traditional LOWE coated glass. A dense SiO2 passivation layer 2a (oxygen-silicon atomic ratio ≥1.8:1) is formed by laser etching passivation to reduce the activity of silver ions in the Ag film layer 22. Combined with the SiO2 layer 24 and the fluorine-doped SnO2 layer 25 outside the passivation layer 2a, a gradient nanoscale seal is formed. The composite coating structure covers the passivation layer 2a to enhance corrosion resistance and reduce the edge corrosion rate to less than 1 / 5 of the traditional process. The titanium-aluminum alloy frame 4 structure provides rigid support for the glass as a whole, and combined with the novel colloidal sealing structure 3, it has both sealing and stress buffering functions.

[0025] In this embodiment, an arc-shaped groove 41 is provided on the outer side of the titanium-aluminum alloy frame 4, and a moisture-proof filling layer 42 is filled in the arc-shaped groove 41. The moisture-proof filling layer 42 is a silicon-based elastomer containing nano-SiO2 particles, which has both sealing and stress buffering functions, and can compensate for the temperature difference deformation between the glass and the metal frame and reduce the stress concentration at the interface.

[0026] Example 2

[0027] refer to Figure 3 Compared to Embodiment 1, the edge of the glass substrate 1 is inclined inward from the side of the coating layer 2 so that the passivation layer 2a extends to the edge of the glass substrate 1. Compared to Embodiment 1, the size of the passivation layer 2a can be increased structurally, while its size is slightly reduced and placed close to the edge of the glass substrate 1. The glass surface on one side is flat and more aesthetically pleasing, reducing the edge difference between the glass product and the titanium-aluminum alloy frame 4, thus improving the aesthetics of the glass product.

[0028] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A high-transmittance LOWE coated glass, comprising a glass substrate (1), a coating layer (2), and a composite frame covering the edges of the glass substrate (1) and the coating layer (2), wherein the coating layer (2) comprises a bottom oxide layer (21), an Ag film layer (22), and a top oxide layer (23) stacked together, characterized in that: The edge of the coating layer (2) is laser-etched to form a passivation layer (2a). The passivation layer (2a) is provided with a SiO2 layer (24) and a fluorine-doped SnO2 layer (25) from the inside to the outside. The composite frame includes a colloidal sealing structure (3) that fits the glass and the edge of the coating layer (2) and a titanium-aluminum alloy frame (4) located outside the colloidal sealing structure (3).

2. The high-transmittance LOWE coated glass according to claim 1, characterized in that: The edge of the glass substrate (1) is inclined inward from the side of the coating layer (2) so that the passivation layer (2a) extends to the edge of the glass substrate (1).

3. The high-transmittance LOWE coated glass according to claim 1, characterized in that: The titanium-aluminum alloy frame (4) has an arc-shaped groove (41) on the outside, and the arc-shaped groove (41) is filled with a moisture-proof filling layer (42), which is a silicon-based elastomer containing nano-SiO2 particles.

4. The high-transmittance LOWE coated glass according to claim 1, characterized in that: The colloidal sealing structure (3) includes a butyl rubber layer (31) in contact with the edge of the glass substrate (1), a polysulfide rubber layer (32) disposed outside the butyl rubber layer (31), and a molecular sieve desiccant layer (33) in contact with the titanium-aluminum alloy frame (4).

5. The high-transmittance LOWE coated glass according to claim 1, characterized in that: The colloidal sealing structure (3) includes a butyl adhesive layer (31) in contact with the edge of the glass substrate (1), a silicone adhesive layer outside the butyl adhesive layer (31), and a molecular sieve desiccant layer (33) in contact with the titanium-aluminum alloy frame (4).

6. A high-transmittance LOWE coated glass according to any one of claims 1-5, characterized in that: The glass substrate (1) is float glass.

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