Hollow light-regulating glass and preparation method thereof

Abstract

The invention provides hollow light adjusting glass which comprises a light adjusting film layer (1), a first transparent substrate (2), an annular spacing layer (3) and a second transparent substrate (4), the light adjusting film layer (1) is located between the first transparent substrate (2) and the second transparent substrate (4), and the annular spacing layer (3) is located between the first transparent substrate (2) and the second transparent substrate (4) and close to the edge position, the edge of the dimming film layer (1) is located in the annular spacing layer (3); a cavity (5) is formed between the dimming film layer (1) and the first transparent substrate (2), and a cavity (6) is formed between the dimming film layer (1) and the second transparent substrate (4); and the cavity (5) and / or the cavity (6) are / is filled with nano SiO2 aerogel particles or / and inert gas. According to the technical scheme, the working stability of the hollow light-adjusting glass can be remarkably improved, it is guaranteed that impurities such as moisture and oxygen in the cavity are located at low positions for a long time, the working stability of the hollow light-adjusting glass can be remarkably improved, the service life of the hollow light-adjusting glass can be remarkably prolonged, meanwhile, the weight of the hollow light-adjusting glass can be remarkably reduced, and a good heat insulation effect is achieved.

Description

Technical Field

[0001] The present invention relates to the field of electronic light-controlling materials, and in particular to a neutral light-controlling glass and a preparation method thereof. Background Art

[0002] Insulating glass is a new type of building material with good heat insulation, sound insulation, aesthetics and practicality. It is generally made of multiple pieces of glass connected by parts.

[0003] A dimming film is an electronic light-control device that essentially places a light-control layer between two layers of transparent conductive film. When an electric field is applied, the arrangement or state of the materials in the light-control layer changes, thereby altering the device's light transmission characteristics, such as switching from low transmittance to high transmittance, or vice versa. Through the action of the electric field, rapid switching between on and off states can be achieved. Depending on the light-control mechanism of the light-control layer, dimming films can be categorized as suspended particle dimming films, polymer dispersed liquid crystal dimming films, and electrochemical reaction dimming films.

[0004] Insulating glass is a glass with dimming functional materials attached to base materials such as glass or film, which are embedded in insulating glass. By controlling the changes in voltage or current, the transmittance of the glass and the intensity of sunlight entering are controlled, making the light passing through the glass soft, comfortable and pleasant without losing the light transmission function.

[0005] The dimming film used for hollow glass in the existing technology is easily affected by changes in moisture, oxygen, temperature and humidity in the air; the glass installed on buildings is easily vibrated by strong winds, and the glass installed on vehicles is also easily in a vibrating state for a long time due to bumps, which has a great impact on the life and performance stability of the dimming unit of the hollow glass; in addition, the hollow glass itself is heavy, which also limits its application.

[0006] The present invention provides a hollow light-emitting glass. By arranging a dimming film layer in the middle of the hollow glass, with the edge of the dimming film layer located inside the annular spacer layer, and filling the hollow cavity with nano-SiO2 aerogel particles and / or inert gas, the stability of the hollow light-emitting glass can be significantly improved, and impurities such as moisture and oxygen in the cavity can be kept at a low level for a long time. The working stability of the hollow light-emitting glass can be significantly improved and the service life can be extended. While ensuring that the light transmission effect is not affected, the weight of the hollow light-emitting glass can be significantly reduced, and the glass has a good heat insulation effect. Summary of the Invention

[0007] The inventors have proposed a hollow glass with significantly higher operating stability and a method for its preparation. By placing a dimming film layer in the center of the hollow glass, with its edge located within an annular spacer, and filling the hollow cavity with nano-SiO2 aerogel particles and / or an inert gas, the negative effects of impurities such as moisture and oxygen, as well as airflow vibrations and turbulence on the dimming glass, can be significantly reduced. This improves the operating stability of the hollow glass and extends its service life.

[0008] The first aspect of the present invention provides a central air-cooled glass, comprising a dimming film layer (1), a first transparent substrate (2), an annular spacer layer (3), and a second transparent substrate (4), wherein the dimming film layer (1) is located between the first transparent substrate (2) and the second transparent substrate (4), and the annular spacer layer (3) is located between the first transparent substrate (2) and the second transparent substrate (4) and close to the edge, wherein the edge of the dimming film layer (1) is located inside the annular spacer layer (3); a cavity (5) is formed between the dimming film layer (1) and the first transparent substrate (2), and a cavity (6) is formed between the dimming film layer (1) and the second transparent substrate (4); and the cavity (5) and / or the cavity (6) are filled with nano-SiO2 aerogel particles or / and an inert gas.

[0009] Furthermore, the dimming film layer (1) comprises at least one of a suspended particle dimming film, an electrochromic dimming film and a polymer dispersed liquid crystal dimming film.

[0010] Furthermore, the dimming film layer (1) includes dimming glass.

[0011] Furthermore, the dimming glass includes a first transparent sheet, a second transparent sheet, and a dimming film arranged between the first transparent sheet and the second transparent sheet; a first interlayer is arranged between the first transparent sheet and the dimming film, and a second interlayer is arranged between the second transparent sheet and the dimming film.

[0012] Furthermore, the first transparent sheet and the second transparent sheet are each independently selected from at least one of an ultra-thin transparent glass sheet and an ultra-thin transparent plastic sheet.

[0013] Furthermore, the thickness of the ultra-thin transparent glass sheet is 0.1 to 0.5 mm.

[0014] Furthermore, the ultra-thin transparent plastic sheet is selected from at least one of PET, PC, and PMMA.

[0015] Furthermore, the ultra-thin transparent plastic sheet has a thickness of 0.1 to 0.5 mm.

[0016] Furthermore, the surface hardness of the ultra-thin transparent plastic sheet is 4H-8H.

[0017] Furthermore, the surface of the ultra-thin transparent plastic sheet contains a silicon dioxide coating.

[0018] In the present invention, the first interlayer and the second interlayer can be EVA film, TPU film, PVB film, or functional film, such as UV-blocking EVA film, UV-blocking TPU film, UV-blocking PVB film, etc., or can be films with a certain color, such as gray EVA film, gray TPU film, gray PVB film, etc.

[0019] Furthermore, the first transparent substrate (2) and / or the second transparent substrate (4) are selected from transparent glass, which can be inorganic glass, organic glass, or functional glass, such as UV blocking glass, IR blocking glass, Low-E glass, tempered glass or antibacterial glass, etc., and can also be selected from colored glass such as gray glass, brown glass, etc.

[0020] Furthermore, the material of the annular spacer layer (3) is one or more of epoxy resin, polyurethane resin, acrylic resin, and silicone resin.

[0021] Furthermore, the width of the annular spacer layer (3) is 1 to 10 cm.

[0022] Furthermore, the thickness of the cavity (5) and / or cavity (6) is 2 to 50 mm.

[0023] Furthermore, the width of the edge of the dimming film layer (1) located inside the annular spacer layer (3) is 0.5 to 5 cm.

[0024] Furthermore, at least one split transparent sheet (7) is provided between the transparent substrate and the dimming film layer, wherein a cavity (8) is formed between the split transparent sheet (7) and the first transparent substrate (2), a cavity (10) is formed between the split transparent sheet (7) and the dimming film layer (1), and / or a cavity (9) is formed between the split transparent sheet (7) and the second transparent substrate (4), and a cavity (11) is formed between the split transparent sheet (7) and the dimming film layer (1); the cavity (8), the cavity (10) and / or the cavity (9), the cavity (11) are filled with nano-SiO2 aerogel particles or / and an inert gas.

[0025] Furthermore, the split transparent sheet (7) is selected from at least one of an ultra-thin glass sheet and a transparent plastic sheet.

[0026] Furthermore, the thickness of the ultra-thin glass sheet is less than or equal to 0.5 mm.

[0027] Furthermore, the thickness of the transparent plastic sheet is less than or equal to 0.5 mm.

[0028] Furthermore, the density of the nano-SiO2 aerogel particles is 0.08-0.12 g / cm 3 The transmittance is greater than or equal to 80%.

[0029] Furthermore, the inert gas is at least one of argon and nitrogen.

[0030] Furthermore, the pressure of the cavity is between 0.5 and 1.5 atm.

[0031] Furthermore, the pressure of the cavity is between 0.8 and 1.2 atm.

[0032] Furthermore, the first transparent substrate (2) is provided with an infrared reflective coating on the side close to the cavity (5) and / or the second transparent substrate (4) is provided with an infrared reflective coating on the side close to the cavity (6).

[0033] Furthermore, the infrared reflective coating is at least one of nano-titanium dioxide or nano-silver.

[0034] Furthermore, an edge sealing body (12) is provided on the periphery of the annular spacer layer (3).

[0035] Furthermore, the edge sealant (12) is selected from at least one of butyl rubber and polysulfide rubber.

[0036] The second aspect of the present invention provides a method for preparing a hollow light glass, comprising:

[0037] (a) stacking a first transparent substrate (2), a dimming film layer (1), and a second transparent substrate (4) in sequence and positioning them at a certain distance;

[0038] (b) providing an annular spacer layer (3) around the dimming film layer (1) and curing the layer;

[0039] (c) evacuating the cavity (5) and / or cavity (6) to a vacuum of less than 0.1 atm;

[0040] (d) Filling the cavity (5) and / or cavity (6) with nano-SiO2 aerogel particles and / or inert gas.

[0041] Furthermore, the annular spacer layer (3) is provided with a shock-absorbing adhesive at a position contacting the transparent substrate and the dimming film layer.

[0042] A third aspect of the present invention provides a use of the above-mentioned central air-clearing glass or the central air-clearing glass prepared by the above-mentioned preparation method in automobile window glass, skylight glass or glass curtain wall.

[0043] The central air-cooling glass of the present invention can significantly improve the moisture-proof, impurity-corrosion and vibration-resistant performance of its dimming unit without affecting the light transmission performance, improve its working stability, and extend the service life of the product. At the same time, it can significantly reduce the weight of the central air-cooling glass and has a good heat insulation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. The drawings described below are merely embodiments of the present invention. Those skilled in the art can also derive other drawings based on the provided drawings without inventive effort.

[0045] Figure 1 This is a schematic cross-sectional view of the central air-lighting glass according to an embodiment of the present invention;

[0046] Figure 2 This is a schematic cross-sectional view of the central air-lighting glass according to an embodiment of the present invention;

[0047] Figure 3 This is a schematic cross-sectional view of the central air-lighting glass according to an embodiment of the present invention;

[0048] Among them, 1 is the dimming film layer, 2 is the first transparent substrate, 3 is the annular spacer layer, 4 is the second transparent substrate, 5, 6, 8, 9, 10, and 11 are cavities, 7-1 and 7-2 are divided transparent sheets, and 12 is an edge seal. DETAILED DESCRIPTION

[0049] The present invention provides a medium-pressure air-clearing glass with stable working performance and significantly long service life.

[0050] In the present invention, the concepts of the first transparent substrate, the second transparent substrate, the first transparent sheet, the second transparent sheet, the first interlayer, and the second interlayer merely indicate the relative relationship between the two, and are not restrictive conditions. They do not necessarily have to be the first and second relationships, but can also be directional relationships such as up, down, front, back, left, and right.

[0051] In order to better illustrate the present invention, the following specific examples are provided.

[0052] Air conditioning glass in Example 1

[0053] Organic glass is used as the transparent substrate with a thickness of 0.5 mm;

[0054] The first transparent substrate (2), the suspended particle dimming film (1), and the second transparent substrate (4) are sequentially stacked and positioned at intervals of 1 cm;

[0055] UV curing epoxy resin glue is placed between the first transparent substrate (2) and the second transparent substrate (4) and around the suspended particle dimming film by using a dispensing device, and the sample is placed under a UV lamp for curing, with the UV light intensity of 2000W / m 2 , the curing time is 30s, and an annular spacer layer (3) with a width of 2cm is obtained; the edge width of the suspended particle dimming film (1) is 1cm and is fixed in the annular spacer layer (3);

[0056] The annular spacer layer (3) is provided with an opening, a connector is installed on the opening, and the wires of the dimming film layer are connected to an external power source through the connector;

[0057] The chamber (5) and the chamber (6) are evacuated to 0.01 atm by a vacuum device;

[0058] Fill the cavity (5) and the cavity (6) with a density of 0.09 g / cm 3 , nano-SiO2 aerogel particles with a transmittance of 88%, and then filled with argon until the cavity pressure reaches 0.85atm, to obtain Figure 1 The central air-lighting glass shown;

[0059] The aging stability of the central air-conditioning dimming glass was tested in a high-temperature, high-humidity chamber at 80°C and 95% humidity for 2000 hours. The dimming performance of the central air-conditioning dimming glass was normal, with no cosmetic defects.

[0060] Air conditioning glass in Example 2

[0061] Low-E glass is used as the transparent substrate with a thickness of 0.2mm;

[0062] The first transparent substrate (2), the polymer dispersed liquid crystal dimming film (1), and the second transparent substrate (4) are sequentially stacked and positioned at intervals of 3 cm, with the Low-E layer facing the dimming film (1);

[0063] UV curing acrylic resin glue is placed between the first transparent substrate (2), the second transparent substrate (4) and around the polymer dispersed liquid crystal dimming film (1) by using a dispensing device, and the sample is placed under a UV lamp for curing. The UV light intensity is 2000W / m 2 , curing time 25s, to obtain an annular spacer layer (3) with a width of 2cm; the edge width of the polymer dispersed liquid crystal dimming film (1) 0.5cm is fixed in the annular spacer layer (3);

[0064] The annular spacer layer (3) is provided with an opening, a connector is installed on the opening, and the wires of the polymer dispersed liquid crystal dimming film (1) are connected to an external power source through the connector;

[0065] The chamber (5) and the chamber (6) are evacuated to 0.08 atm by a vacuum device;

[0066] Fill the cavity (5) and cavity (6) with a density of 0.12 g / cm 3 , nano-SiO2 aerogel particles with a light transmittance of 80%, and then filled with argon until the cavity pressure reaches 0.9atm, to obtain Figure 1 The central air-lighting glass shown;

[0067] The aging stability of the central air-conditioning dimming glass was tested in a high-temperature, high-humidity chamber at 80°C and 95% humidity for 2000 hours. The dimming performance of the central air-conditioning dimming glass was normal, with no cosmetic defects.

[0068] Example 3 air conditioning glass

[0069] The first transparent sheet, the first interlayer, the suspended particle dimming film, the second interlayer, and the second transparent sheet are stacked in sequence and then laminated in an autoclave at 110° C. and 1.0 MPa to obtain a dimming glass; wherein the first transparent sheet and the second transparent sheet are selected from tempered glass and have a thickness of 0.2 mm, and the first interlayer and the second interlayer are selected from TPU film;

[0070] The above-mentioned dimming glass replaces the suspended particle dimming film (1) of Example 1 to prepare a neutral dimming glass, and the manufacturing conditions are the same as those of Example 1;

[0071] The aging stability of the central air-conditioning dimming glass was tested in a high-temperature, high-humidity chamber at 80°C and 95% humidity for 2000 hours. The dimming performance of the central air-conditioning dimming glass was normal, with no cosmetic defects.

[0072] Air conditioning glass in Example 4

[0073] Ordinary inorganic glass is used as the transparent substrate with a thickness of 0.2mm;

[0074] The first transparent substrate (2), the first split transparent sheet (7-1), the polymer dispersed liquid crystal dimming film (1), the second split transparent sheet (7-2), and the second transparent substrate (4) are sequentially stacked and positioned at intervals of 1 cm; the split transparent sheet is made of transparent PC with a thickness of 0.2 mm;

[0075] UV curable silicone resin glue is placed between the first transparent substrate and the second transparent substrate, around the polymer dispersed liquid crystal dimming film, the first split transparent sheet (7-1), and the second split transparent sheet (7-2) by dispensing equipment, and the sample is placed under a UV lamp for curing. The UV light intensity is 2000W / m 2, the curing time is 25s, and an annular spacer layer (3) with a width of 1 cm is obtained; the edges of the first split transparent sheet (7-1), the polymer dispersed liquid crystal dimming film (1), and the second split transparent sheet (7-2) with a width of 0.5 cm are fixed in the annular spacer layer (3);

[0076] The annular spacer layer is provided with an opening, a connector is installed on the opening, and the wires of the dimming film layer are connected to an external power source through the connector.

[0077] The chamber is evacuated to 0.08 atm using vacuum equipment;

[0078] The cavity is filled with a density of 0.12 g / cm 3 , nano-SiO2 aerogel particles with a transmittance of 80%, and then filled with nitrogen until the cavity pressure reaches 0.9atm, to obtain Figure 3 The central air-lighting glass shown;

[0079] The aging stability of the central air-conditioning dimming glass was tested in a high-temperature, high-humidity chamber at 80°C and 95% humidity for 2000 hours. The dimming performance of the central air-conditioning dimming glass was normal, with no cosmetic defects.

[0080] Example 5 air conditioning glass

[0081] Same as Example 4, except that a nano-titanium dioxide coating is pre-sprayed on the side of the first transparent substrate (2) close to the cavity, and a layer of butyl rubber sealant is provided on the periphery of the annular spacer layer (3);

[0082] The aging stability of the central air-conditioning dimming glass was tested in a high-temperature, high-humidity chamber at 80°C and 95% humidity for 2000 hours. The dimming performance of the central air-conditioning dimming glass was normal, with no cosmetic defects.

[0083] The above embodiments are intended only to facilitate understanding of the methods and core concepts of the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is intended to be construed in the widest manner consistent with the principles and novel features disclosed herein.

Claims

1. A kind of air-clearing glass, characterized in that: The invention comprises a dimming film layer (1), a first transparent substrate (2), an annular spacer layer (3), and a second transparent substrate (4); the dimming film layer (1) is located between the first transparent substrate (2) and the second transparent substrate (4); the annular spacer layer (3) is located between the first transparent substrate (2) and the second transparent substrate (4) and close to the edge; wherein the edge of the dimming film layer (1) is located inside the annular spacer layer (3); a cavity (5) is formed between the dimming film layer (1) and the first transparent substrate (2); and a cavity (6) is formed between the dimming film layer (1) and the second transparent substrate (4); and the cavity (5) and / or the cavity (6) are filled with nano-SiO2 aerogel particles or / and an inert gas.

2. The central air-clearing glass according to claim 1, characterized in that: The dimming film layer (1) comprises at least one of a suspended particle dimming film, an electro-variable dimming film and a polymer dispersed liquid crystal dimming film.

3. The central air-clearing glass according to claim 1, characterized in that: The dimming film layer (1) comprises dimming glass.

4. The central air-clearing glass according to claim 3, characterized in that: The dimming glass includes a first transparent sheet, a second transparent sheet, and a dimming film arranged between the first transparent sheet and the second transparent sheet; a first interlayer is arranged between the first transparent sheet and the dimming film, and a second interlayer is arranged between the second transparent sheet and the dimming film.

5. The central air-clearing glass according to claim 4, characterized in that: The first transparent sheet and the second transparent sheet are each independently selected from at least one of an ultra-thin transparent glass sheet and an ultra-thin transparent plastic sheet.

6. The central air-clearing glass according to claim 5, characterized in that: The thickness of the ultra-thin transparent glass sheet is 0.1 to 0.5 mm.

7. The central air-clearing glass according to claim 5, characterized in that: The ultra-thin transparent plastic sheet is selected from at least one of PET, PC, and PMMA.

8. The central air-clearing glass according to claim 1, characterized in that: The first transparent substrate (2) and / or the second transparent substrate (4) are selected from transparent glass.

9. The central air-clearing glass according to claim 1, characterized in that: The material of the annular spacer layer (3) is one or more of epoxy resin, polyurethane resin, acrylic resin, and silicone resin.

10. The central air-clearing glass according to claim 1, characterized in that: The width of the edge of the dimming film layer (1) located inside the annular spacer layer (3) is 0.5 to 5 cm.

11. The hollow air-clearing glass according to claim 1, characterized in that: At least one split transparent sheet (7) is arranged between the transparent substrate and the dimming film layer, wherein a cavity (8) is formed between the split transparent sheet (7) and the first transparent substrate (2), a cavity (10) is formed between the split transparent sheet (7) and the dimming film layer (1), and / or a cavity (9) is formed between the split transparent sheet (7) and the second transparent substrate (4), and a cavity (11) is formed between the split transparent sheet (7) and the dimming film layer (1); the cavity (8), cavity (10) and / or cavity (9), cavity (11) are filled with nano-SiO2 aerogel particles or / and an inert gas.

12. The central air-clearing glass according to claim 11, characterized in that: The split transparent sheet (7) is selected from at least one of an ultra-thin glass sheet and a transparent plastic sheet.

13. The hollow air-clearing glass according to any one of claims 1 and 11, characterized in that: The density of the nano-SiO2 aerogel particles is 0.08-0.12 g / cm 3 The transmittance is greater than or equal to 80%.

14. The hollow air-clearing glass according to any one of claims 1 and 11, characterized in that: The inert gas is at least one of argon and nitrogen.

15. The hollow air-clearing glass according to any one of claims 1 and 11, characterized in that: The pressure of the cavity is between 0.5 and 1.5 atm.

16. The central air-clearing glass according to claim 1, characterized in that: The first transparent substrate (2) is provided with an infrared reflective coating on the side close to the cavity (5) and / or the second transparent substrate (4) is provided with an infrared reflective coating on the side close to the cavity (6).

17. The central air-clearing glass according to claim 1, characterized in that: An edge sealing body (12) is provided on the periphery of the annular spacer layer (3).

18. A method for preparing air-filled light-removing glass, characterized in that: include (a) stacking a first transparent substrate (2), a dimming film layer (1), and a second transparent substrate (4) in sequence and positioning them at a certain distance; (b) providing an annular spacer layer (3) around the dimming film layer (1) and curing the layer; (c) evacuating the cavity (5) and / or cavity (6) to a vacuum of less than 0.1 atm; (d) Filling the cavity (5) and / or cavity (6) with nano-SiO2 aerogel particles and / or inert gas.

19. The method for preparing the hollow air-clearing glass according to claim 18, characterized in that: The annular spacer layer (3) is provided with shock-absorbing glue at a position contacting the transparent substrate and the dimming film layer.

20. Use of the empty light-clearing glass according to any one of claims 1 to 17 or the empty light-clearing glass prepared by the method for preparing the empty light-clearing glass according to any one of claims 18 to 19 in automobile window glass, skylight glass or glass curtain wall.

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