Dimming glass with enhanced durability

Abstract

According to the technical scheme, the durability-enhanced dimming glass comprises a first transparent plate, a first bonding layer, a dimming film, a second bonding layer and a second transparent plate which are sequentially stacked, the light adjusting film comprises a first transparent substrate, a first transparent conductive layer, a light control layer, a second transparent conductive layer and a second transparent substrate which are sequentially stacked, the thickness of the light adjusting film is A. The first transparent substrate, the first transparent conductive layer, the light control layer, the second transparent conductive layer and the second transparent substrate of at least one part of the edge of the light adjusting film are shrunk inwards. And a sealing material is filled in a vacated area after inward shrinkage. According to the utility model, the light control layer in the dimming film can be tightly protected, and the anti-aging characteristics of the dimming glass, such as moisture resistance, radiation resistance and the like, are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of dimming glass, in particular to a dimming glass with enhanced durability. Background Art

[0002] For dimming glass products, a sandwich structure is a conventional choice, and an adhesive layer is needed to bond the glass and the dimming film together, providing certain mechanical properties for the dimming glass. However, during the long-term use of conventional dimming glass products, due to the poor edge sealing of the dimming film, moisture in the environment will penetrate into the dimming film, resulting in the deterioration of the dimming performance at the edge of the dimming glass. Therefore, the dimming film needs very strict protection.

[0003] To this end, Patent CN103003746A discloses a technical solution of pasting a sealing tape on the peripheral edge part of the dimming film. Before pasting the tape, it is necessary to remove the moisture inside the film first. This solution still has problems such as complex operation, incomplete removal of moisture inside the film, and poor sealing effect. It is necessary to provide a preparation technology for dimming glass that is simpler and easier to operate and has a good sealing effect. Summary of the Utility Model

[0004] Aiming at the above problems, the utility model aims to provide a dimming glass with enhanced durability, which has a simple and novel structure, can strictly protect the light control layer inside the dimming film, and enhances the anti-aging characteristics such as moisture resistance and radiation resistance of the dimming glass.

[0005] The technical solution of the utility model is a dimming glass with enhanced durability, including: a first transparent plate, a first adhesive layer, a dimming film, a second adhesive layer and a second transparent plate which are sequentially laminated. The dimming film includes a first transparent substrate, a first transparent conductive layer, a light control layer, a second transparent conductive layer and a second transparent substrate which are sequentially laminated. The thickness of the dimming film is A. It is characterized in that: at least a part of the first transparent substrate, the first transparent conductive layer, the light control layer, the second transparent conductive layer and the second transparent substrate at the edge of the dimming film are retracted relative to the second transparent plate, and the vacated area after retraction is filled with a sealing material.

[0006] Preferably, at least a part of the first transparent substrate, the first transparent conductive layer, the light control layer at the edge of the dimming film are retracted relative to the second transparent conductive layer and the second transparent substrate, and the retraction dimension is C. The second transparent conductive layer and the second transparent substrate are retracted relative to the second transparent plate, and the retraction dimension is B.

[0007] Preferably, at least a part of the first transparent substrate, the first transparent conductive layer, the light control layer, the second transparent conductive layer at the edge of the dimming film are retracted relative to the second transparent substrate, and the retraction dimension is C. The second transparent substrate is retracted relative to the second transparent plate, and the retraction dimension is B.

[0008] Preferably, the retracted area at the edge of the light dimming film forms a closed annular area along the light dimming film.

[0009] Preferably, A:B:C = (0.001~0.1):1:(0.1~10).

[0010] Preferably, A:B:C = (0.01~0.1):1:(0.5~5).

[0011] Preferably, the sealing material is selected from at least one of epoxy resin, polyurethane, polyimide resin, polystyrene resin, acrylic resin, modified acrylic resin, butyl rubber, and silicone oxygen polymer.

[0012] Preferably, the light control layer is a suspended particle light control layer, a polymer dispersed liquid crystal light control layer, or an electrochromic light control layer.

[0013] Preferably, the method for preparing the light dimming glass is characterized by comprising:

[0014] Stacking the layers according to the structure of the light dimming glass and then performing lamination treatment to obtain the light dimming glass.

[0015] Preferably, there are no special restrictions on the types of the first transparent plate and the second transparent plate, and they can be conventional transparent plates for light dimming glass well-known to those skilled in the art, such as ordinary glass like inorganic glass and organic glass, and the organic glass like PC board and PMMA board, etc., or they can be functional glasses, such as UV blocking glass, IR blocking glass, Low-E glass, tempered glass, or antibacterial glass, etc., or they can also be selected from colored glasses such as gray glass and brown glass.

[0016] Preferably, there are no special restrictions on the types of the adhesive layer materials, and they can be conventional adhesive films for light dimming glass well-known to those skilled in the art, such as EVA adhesive film, TPU adhesive film, or PVB adhesive film; or they can be functional adhesive films, such as UV blocking EVA adhesive film, UV blocking TPU adhesive film, or UV blocking PVB adhesive film, infrared blocking EVA adhesive film, infrared blocking TPU adhesive film, or infrared blocking PVB adhesive film; or they can also be selected from colored EVA adhesive film, TPU adhesive film, or PVB adhesive film.

[0017] Preferably, the adhesive layer material is selected from at least one of EVA adhesive film, TPU adhesive film, and PVB adhesive film.

[0018] Preferably, there are no special restrictions on the method of lamination treatment for preparing the light dimming glass, and it can be a conventional lamination method for light dimming glass in the art, such as laminating in a laminator, or laminating in an autoclave or a lamination box / furnace.

[0019] Preferably, the temperature for the lamination treatment is 90~130°C, the relative pressure for lamination is 0.1~1.2 MPa, and the lamination time is 30~120 minutes.

[0020] The utility model can tightly protect the light control layer inside the light control film, enhancing the anti-aging characteristics of the light control glass such as moisture resistance and radiation resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the utility model;

[0022] Figure 2 is Figure 1 a schematic structural diagram of the closed annular area formed by the inward shrinkage of the light control film;

[0023] Figure 3 is a second schematic structural diagram of the utility model;

[0024] Figure 4 is Figure 3 a schematic structural diagram of the closed annular area formed by the inward shrinkage of the light control film;

[0025] Wherein: 1 - the first transparent plate; 2 - the first adhesive layer; 3 - the light control film; 31 - the first transparent substrate; 32 - the first transparent conductive layer; 33 - the light control layer; 34 - the second transparent conductive layer; 35 - the second transparent substrate; 4 - the second adhesive layer; 5 - the second transparent plate; 6 - the sealing material. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following further describes the utility model in detail with reference to the drawings.

[0027] As Figures 1 to 4 shown, the utility model provides a light control glass with enhanced durability, including: a first transparent plate 1, a first adhesive layer 2, a light control film 3, a second adhesive layer 4, and a second transparent plate 5 that are sequentially stacked. The light control film 3 includes a first transparent substrate 31, a first transparent conductive layer 32, a light control layer 33, a second transparent conductive layer 34, and a second transparent substrate 35 that are sequentially stacked. The thickness of the light control film 3 is A. At least a part of the first transparent substrate 31, the first transparent conductive layer 32, and the light control layer 33 at the edge of the light control film 3 are inwardly shrunk relative to the second transparent plate 5, and the empty area after shrinkage is filled with the sealing material 6.

[0028] In the above solution, at least a part of the first transparent substrate 31, the first transparent conductive layer 32, and the light control layer 33 at the edge of the light control film 3 are inwardly shrunk relative to the second transparent conductive layer 34 and the second transparent substrate 35, and the inward shrinkage dimension is C. The second transparent conductive layer 34 and the second transparent substrate 35 are inwardly shrunk relative to the second transparent plate 5, and the inward shrinkage dimension is B.

[0029] In the above solution, at least a part of the first transparent substrate 31, the first transparent conductive layer 32, the light control layer 33, and the second transparent conductive layer 34 at the edge of the dimming film 3 are recessed relative to the second transparent substrate 35, and the recessed dimension is C, and the second transparent substrate 35 is recessed relative to the second transparent plate 5, and the recessed dimension is B.

[0030] Among them, the recessed area at the edge of the dimming film 3 forms a closed annular area along the dimming film 3.

[0031] Specifically, A:B:C = (0.001~0.1):1:(0.1~10).

[0032] Specifically, A:B:C = (0.01~0.11):1:(0.5~5).

[0033] In addition, the sealing material 6 is selected from at least one of epoxy resin, polyurethane, polyimide resin, polystyrene resin, acrylic resin, modified acrylic resin, butyl rubber, and silicone oxygen polymer.

[0034] In addition, the light control layer 33 is a suspended particle light control layer or a polymer dispersed liquid crystal light control layer or an electrochromic light control layer.

[0035] The method for preparing the dimming glass is characterized by including:

[0036] Stack the layers according to the structure of the dimming glass and then perform lamination treatment to obtain the dimming glass.

[0037] Specifically, there are no special restrictions on the types of the first transparent plate and the second transparent plate, and they can be conventional transparent plates for dimming glass well-known to those skilled in the art, and can be ordinary glass such as inorganic glass and organic glass. The organic glass such as PC board and PMMA board, etc., can also be functional glass, such as UV barrier glass, IR barrier glass, Low-E glass, tempered glass or antibacterial glass, etc., and can also be selected from colored glasses such as gray glass and brown glass.

[0038] Specifically, there are no special restrictions on the types of the adhesive layer materials, and they can be conventional adhesive films for dimming glass well-known to those skilled in the art, and can be EVA adhesive film, TPU adhesive film or PVB adhesive film; they can also be functional adhesive films, such as UV barrier EVA adhesive film, UV barrier TPU adhesive film or UV barrier PVB adhesive film, infrared barrier EVA adhesive film, infrared barrier TPU adhesive film or infrared barrier PVB adhesive film; they can also be selected from colored EVA adhesive film, TPU adhesive film or PVB adhesive film.

[0039] Specifically, the bonding layer material is selected from at least one of EVA film, TPU film, and PVB film.

[0040] Specifically, there is no special limitation on the method of laminating for preparing the dimming glass, and it can be the conventional laminating method for dimming glass in the art, such as laminating in a laminator, or laminating in an autoclave or a laminating box / furnace.

[0041] Specifically, the temperature of the laminating treatment is 90 - 130°C, the relative laminating pressure is 0.1 - 1.2 MPa, and the laminating time is 30 - 120 minutes.

[0042] In the specific implementation process of the present utility model, first, on the dimming film, by means of a mechanical knife, laser, etc., at the edge of the first transparent substrate surface, half-cut is performed, removing the first transparent substrate, the first transparent conductive layer, the light control layer, even the second transparent conductive layer, and even part of the second transparent substrate with a peripheral width C of the dimming film. The cut-off area is filled with a sealing material to achieve the effect of edge sealing, and then the first transparent plate, the first bonding layer, the dimming film, the second bonding layer, and the second transparent plate are sequentially laminated according to the laminated structure of the dimming glass for laminating. Or the first transparent plate, the first bonding layer, the dimming film, the second bonding layer, the second transparent plate, and the sealing material are sequentially laminated according to the laminated structure of the dimming glass, and then laminating is performed.

[0043] The outer surfaces of the first transparent substrate and the second transparent substrate are only for conveniently describing the two surfaces of the dimming film, and are not limiting conditions, and can be described by up and down, left and right, front and back, etc.

[0044] The present utility model tests the effect of the dimming glass on blocking water vapor through a boiling water experiment.

[0045] Boiling water test experiment: After boiling the prepared dimming glass in hot water at 100°C for 8 hours, visually check whether there is any change in the appearance of the dimming glass. Poor water vapor blocking effect will cause different degrees of dimming failure areas around the dimming film. Use a ruler to measure the width of the dimming failure area. The larger the width value of the dimming failure area, the worse the water vapor barrier performance.

[0046]

Example 1

[0047] As Figure 1 shown, for the suspended particle dimming film, the thickness A of the dimming film is 350 microns, the inner shrinkage dimension B is 10 mm, the inner shrinkage dimension C is 5 mm, A:B:C = 0.035:1:0.5, and the sealing material is butyl rubber.

[0048] In the specific implementation process, first, on the suspended particle dimming film, use a mechanical knife to dig out a rectangular half-cut area with a width of 5 mm on one side of the dimming film, clean the residue in the half-cut area, and fill butyl rubber in the half-cut area and the area extending 10 mm outward through a dispensing machine.

[0049] Stack two ultra-clear glasses, two EVA interlayers, and 1 layer of light-dimming film in sequence according to Figure 1 the structure, and perform laminating in an autoclave at a laminating temperature of 110 °C, a relative laminating pressure of 0.6 MPa, and a laminating time of 120 minutes.

[0050] The results of the boiling water test are shown in Table 1.

[0051]

Example 2

[0052] As Figure 3 shown, for the polymer dispersed liquid crystal light-dimming film, the thickness A of the light-dimming film is 350 microns, the inner shrinkage dimension B is 15 mm, the inner shrinkage dimension C is 10 mm, and A:B:C = 0.023:1:0.7. The sealing material is butyl rubber.

[0053] In the specific implementation process, first use a mechanical knife on the polymer dispersed liquid crystal light-dimming film to cut out a rectangular semi-cut area with a width of 10 mm on one side of the light-dimming film, and clean the residue in the semi-cut area.

[0054] Stack two ultra-clear glasses, two EVA interlayers, 1 layer of light-dimming film, and one layer of sealing material. The size of the sealing material is as Figure 3 shown in 6, and stack them in sequence according to Figure 3 the structure, and perform laminating in an autoclave at a laminating temperature of 110 °C, a relative laminating pressure of 0.6 MPa, and a laminating time of 120 minutes.

[0055] The results of the boiling water test are shown in Table 1.

[0056] Table 1

[0057] Example Width of the failure zone on the side with the sealing material Width of the failure zone on the side without the sealing material Example 1 0 mm 7 mm Example 2 0 mm 6 mm

[0058] It can be seen from the results in Table 1 that in

Example 1

Example 2

Example 1

[0059] The above is only the preferred implementation mode of the present invention, and does not impose any form of limitation on the invention. Any simple modification, equivalent change or modification made to the above embodiments based on the technical principle of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A dimming glass for enhancing durability, comprising: A first transparent plate (1), a first adhesive layer (2), a light-dimming film (3), a second adhesive layer (4) and a second transparent plate (5) are sequentially stacked, and the light-dimming film (3) includes a first transparent substrate (31), a first transparent conductive layer (32), a light control layer (33), a second transparent conductive layer (34) and a second transparent substrate (35) which are sequentially stacked. The thickness of the light-dimming film (3) is A. It is characterized in that at least a part of the first transparent substrate (31), the first transparent conductive layer (32), the light control layer (33), the second transparent conductive layer (34) and the second transparent substrate (35) at the edge of the light-dimming film (3) are recessed relative to the second transparent plate (5), and the recessed area is filled with a sealing material (6).

2. The dimming glass with enhanced durability according to claim 1, characterized in that: At least a part of the first transparent substrate (31), the first transparent conductive layer (32), and the light control layer (33) at the edge of the light-dimming film (3) are recessed relative to the second transparent conductive layer (34) and the second transparent substrate (35), and the recessed dimension is C. The second transparent conductive layer (34) and the second transparent substrate (35) are recessed relative to the second transparent plate (5), and the recessed dimension is B.

3. The dimming glass for enhancing durability according to claim 1, wherein: At least a part of the first transparent substrate (31), the first transparent conductive layer (32), the light control layer (33), and the second transparent conductive layer (34) at the edge of the light-dimming film (3) are recessed relative to the second transparent substrate (35), and the recessed dimension is C. The second transparent substrate (35) is recessed relative to the second transparent plate (5), and the recessed dimension is B.

4. The dimming glass with enhanced durability according to claim 2 or 3, characterized in that: The recessed area at the edge of the light-dimming film (3) forms a closed annular area along the light-dimming film (3).

5. An enhanced durability dimming glass according to claim 2 or 3, characterized in that: A:B:C = (0.001~0.1):1:(0.1~10).

6. An enhanced durability dimming glass according to claim 2 or 3, characterized in that: A:B:C = (0.01~0.1):1:(0.5~5).

7. An enhanced durability dimming glass according to claim 1, characterized in that: The sealing material (6) is selected from one of epoxy resin, polyurethane, polyimide resin, polystyrene resin, acrylic resin, modified acrylic resin, butyl rubber, and organosiloxane polymer.

8. An enhanced durability dimming glass according to claim 1, wherein: The light control layer (33) is a suspended particle light control layer or a polymer dispersed liquid crystal light control layer or an electrochromic light control layer.

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