BIPV (building integrated photovoltaics) glass panel with mildew-proof and low-light-pollution functions and preparation method thereof

Abstract

The invention provides a BIPV glass panel with mildew-proof and low-light-pollution functions and a preparation method thereof, and belongs to the field of glass processing.The specific preparation method comprises the steps of film coating treatment, matt treatment, cleaning, cutting and edging treatment, mildew-proof treatment and toughening treatment, and the BIPV glass panel with the mildew-proof and low-light-pollution functions is obtained. According to the method, the coated BIPV glass is subjected to chemical soaking corrosion treatment, and a proper chemical soaking solution is selected, so that the purposes of carrying out surface treatment on the glass and reducing the light pollution of the glass are achieved; a zinc oxide mildew-proof solution is sprayed on a low-light-pollution glass matte surface, and a high-temperature sintering and tempering process is combined, so that the mildew-proof solution and the glass matte surface are thoroughly fused, the surface of the glass is protected, Na < + > on the surface of the glass is prevented from being in contact with water in air, and the mildew-proof effect is further achieved; the prepared glass not only can reduce light pollution, but also can prevent mildew, and the outdoor service life of the BIPV glass panel is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of glass processing, and in particular to a BIPV glass panel with mildew-proof and low light pollution functions and a preparation method thereof. Background Art

[0002] The essence of glass mildew is the phenomenon that sodium ions migrate from the glass body and react with air to generate alkaline substances that corrode the glass. At present, methods to prevent glass mildew include: mildew-proof paper packaging method, using mildew-proof paper when packaging glass, sulfur dioxide fumigation method, fumigating glass with sulfur dioxide gas, spraying mildew-proof agent method, spraying mildew-proof agent on the glass surface to form a protective layer, adding mildew-proof powder method, adding mildew-proof powder during the glass production process, or spraying mildew-proof powder evenly on the glass surface by static electricity or gas atomization. Except for the method of adding mildew-proof powder, the other mildew-proof methods mentioned above are not convenient to be carried out directly on the glass production line, which will greatly attenuate the mildew-proof effect of the glass and the mildew-proof effect is limited; and the method of adding mildew-proof powder is difficult to clean after applying the powder and it is difficult to meet the glass cleanliness requirements. Therefore, there is a lack of methods that can effectively prevent glass mildew in the prior art.

[0003] There are currently two ways to prevent glare on photovoltaic BIPV glass panels: First, use a solution to attach a coating layer on the glass surface, disperse it into uniform and fine droplets through a spray gun or disc atomizer, and apply it to the glass surface (called spray AG) to achieve the effect of reducing light pollution. The disadvantage is that the particle size of spray AG is poor, and it is difficult to make a significant adjustment to the glossiness of AG glass in conventional testing (the main parameter for reducing light pollution). Environmental and usage factors may cause the AG layer to peel off; Second, chemical etching AG is made through a chemical process to change the original glass reflective surface into a matte diffuse reflective surface, which can blur the reflective effect, prevent glare, and reduce reflectivity and light and shadow; The disadvantage is that the process of chemically removing materials will destroy the oxide protective layer generated on the glass surface, making Na + On the other hand, the rough texture of AG increases the contact area between the glass surface and the air, making the precipitated Na + Better contact with moisture in the air exacerbates the mildew phenomenon. Therefore, photovoltaic BIPV glass panels need to prevent mildew to adapt to their long-term outdoor use environment. Summary of the invention

[0004] In view of the technical problems existing in the background technology, the present application provides a BIPV glass panel with anti-mildew and low light pollution functions and a preparation method thereof, aiming to solve the technical problems in the prior art that the anti-glare method of photovoltaic BIPV glass panels is poor, aggravates mildew, and is difficult to use outdoors for a long time.

[0005] In a first aspect, the present application provides a method for preparing a BIPV glass panel with mildew-proof and low light pollution functions, comprising the following steps:

[0006] S1, coating treatment: providing a protective layer on an embossed surface of the BIPV glass;

[0007] S2, matte treatment: chemically immerse and etch the BIPV glass coated in step S1, wherein the chemical immersion solution includes an oxidant and an etchant, so that the other surface of the BIPV glass that is not coated forms a matte surface;

[0008] S3, cleaning, cutting and edging;

[0009] S4, mildew-proof treatment; spraying the zinc oxide solution on the matte surface of the BIPV glass treated in step S3, and drying;

[0010] S5, tempering treatment; the BIPV glass after mildew-proof treatment is subjected to high-temperature sintering and tempering to obtain a BIPV glass panel with mildew-proof and low light pollution functions.

[0011] In the technical solution of the embodiment of the present application, the coated BIPV glass is subjected to chemical immersion corrosion treatment, and an oxidant that can react with the glass is selected, which can oxidize the silicon atoms in the glass to form SiO2; the etchant in the chemical immersion solution can decompose SiO2 again, thereby achieving the purpose of surface treatment of the glass and reducing light pollution of the glass. In addition, a zinc oxide solution is used as an anti-mildew solution, and the zinc oxide solution is sprayed on the matte surface of the glass with low light pollution, and combined with a high-temperature sintering and tempering process, the anti-mildew solution is completely integrated with the matte surface of the glass, thereby protecting the glass surface and preventing Na on the glass surface. + It comes into contact with water in the air, thereby achieving an anti-mildew effect.

[0012] In some embodiments, in step S2, the oxidant is one or more of sulfuric acid, sulfate, hydrochloric acid or nitric acid, and the etchant is one or more of ammonium bifluoride, potassium fluoroborate, potassium fluoride, and hydrofluoric acid. The mass percentage concentration of the oxidant in the chemical immersion solution is 12% to 38%, and the mass percentage concentration of the etchant is 25% to 42%.

[0013] In this embodiment, the etching effect of the glass is controlled by controlling the concentration of the oxidant and the etchant in the chemical immersion solution, thereby obtaining a BIPV glass with a gloss parameter in the range of 0.8GU-20GU, thereby achieving the purpose of effectively reducing light pollution.

[0014] In some embodiments, in step S4, the flow rate of spraying the zinc oxide solution is to spray the zinc oxide solution containing 1-5g of zinc oxide every 15s. In step S5, the temperature of the high temperature sintering tempering is 680-720°C and the time is 120-150s.

[0015] In this embodiment, by controlling the spraying amount of the anti-mildew solution and coordinating the high-temperature sintering tempering process, the zinc oxide solution is completely integrated with the matte surface of the glass with low light pollution. While protecting the glass surface and preventing mildew, it avoids affecting the degree of integration of the anti-mildew coating and the glass surface due to excessive spraying, thereby affecting the integrity of the glass.

[0016] In some embodiments, in step S4, the drying temperature is 150-200°C and the time is 15-20 minutes. In step S3, the cleaning liquid used for cleaning is deionized water. In step S1, the protective layer is an acid-resistant protective film with a viscosity of 100-300 g / cm 2 .

[0017] In a second aspect, the embodiment of the present application provides a BIPV glass panel with mildew-proof and low light pollution functions, which is prepared by the above-mentioned method for preparing a BIPV glass panel with mildew-proof and low light pollution functions. The BIPV glass panel includes embossed glass, one side of the embossed glass is a matte surface, and the surface of the matte surface is sprayed with an anti-mildew layer.

[0018] In this embodiment, the BIPV glass panel prepared by the method for preparing a BIPV glass panel with mildew resistance and low light pollution functions can reduce light pollution and prevent glass mildew. It can be suitable for long-term outdoor environments, thereby increasing the outdoor service life of the BIPV glass panel and having high practical application value.

[0019] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings used in the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a schematic flow chart of a method for preparing a BIPV glass panel with mildew-proof and low light pollution functions in an embodiment of the present application;

[0022] Figure 2 This is a schematic diagram of the structure of a BIPV glass panel with mildew-proof and low light pollution functions in an embodiment of the present application;

[0023] Figure 3 This is a graph showing the mildew resistance test results of the BIPV glass panel prepared in Example 1.

[0024] Explanation of reference numerals: 100 - BIPV glass panel with mildew-proof and low light pollution functions; 110 - embossed glass; 120 - matte surface; 130 - mildew-proof layer. DETAILED DESCRIPTION

[0025] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0027] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0028] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0030] At present, in the anti-glare treatment method of photovoltaic BIPV glass panels, chemical etching will destroy the oxide protective layer generated on the glass surface, making Na + It is easier to precipitate, and the rough texture of AG increases the contact area between the glass surface and the air, making the precipitated Na + Better contact with moisture in the air exacerbates the mildew phenomenon of glass. In the prior art, most of the mildew prevention methods are not convenient to be carried out directly on the glass production line, which will greatly reduce the mildew prevention effect of the glass and the mildew prevention effect is limited. The method of adding mildew prevention powder is difficult to clean after applying the powder and it is difficult to meet the glass cleanliness requirements. Therefore, the prior art lacks a solution that can both reduce light pollution and prevent BIPV glass panels from mildewing during long-term outdoor use.

[0031] In order to solve the technical problems that the existing photovoltaic BIPV glass panel anti-glare method is ineffective, aggravates the mildew phenomenon, and is difficult to use outdoors for a long time, the present application provides a BIPV glass panel with mildew-proof and low light pollution functions and a preparation method thereof. In the preparation method of the BIPV glass panel with mildew-proof and low light pollution functions, the BIPV glass after coating is subjected to chemical immersion corrosion treatment, and an oxidant that can react with the glass is selected, which can oxidize the silicon atoms in the glass to form SiO2; the etchant in the chemical immersion solution can decompose SiO2 again, so as to achieve the purpose of surface treatment of the glass and reduce light pollution of the glass. In addition, zinc oxide solution is used as the mildew-proof solution, and the zinc oxide solution is sprayed on the matte surface of the low-light-pollution glass, and combined with a high-temperature sintering and tempering process, the mildew-proof solution and the matte surface of the glass are completely integrated, thereby protecting the glass surface and preventing Na on the glass surface. + Contact with water in the air, thus playing a mildew-proof effect. The BIPV glass panel prepared by the preparation method can reduce light pollution and prevent glass mildew. It can be used in long-term outdoor environments, improves the outdoor service life of the BIPV glass panel, and has high practical application value.

[0032] For the convenience of explanation, the following embodiments are described by taking the method for preparing a BIPV glass panel with mildew-proof and low light pollution functions in the embodiment of the present application as an example. Figure 1 As shown, the preparation method specifically comprises the following steps:

[0033] S1, coating treatment: providing a protective layer on an embossed surface of the BIPV glass;

[0034] S2, matte treatment: chemical immersion and corrosion treatment is performed on the BIPV glass coated in step S1, and the chemical immersion solution used includes an oxidant and an etchant, so that the other surface of the BIPV glass that is not coated forms a matte surface;

[0035] S3, cleaning, cutting and edging;

[0036] S4, mildew-proof treatment; spraying the zinc oxide solution on the matte surface of the BIPV glass treated in step S3, and drying;

[0037] S5, tempering treatment; the BIPV glass after mildew-proof treatment is subjected to high-temperature sintering and tempering to obtain a BIPV glass panel with mildew-proof and low light pollution functions.

[0038] In the technical solution of the embodiment of the present application, the coated BIPV glass is subjected to chemical immersion corrosion treatment, and an oxidant that can react with the glass is selected, which can oxidize the silicon atoms in the glass to form SiO2; the etchant in the chemical immersion solution can decompose SiO2 again, thereby achieving the purpose of surface treatment of the glass and reducing light pollution of the glass. In addition, a zinc oxide solution is used as an anti-mildew solution, and the zinc oxide solution is sprayed on the matte surface of the glass with low light pollution, and combined with a high-temperature sintering and tempering process, the anti-mildew solution is completely integrated with the matte surface of the glass, thereby protecting the glass surface and preventing Na on the glass surface. + It comes into contact with water in the air, thereby achieving an anti-mildew effect.

[0039] Further, in some embodiments, in step S2, the oxidant is one or more of sulfuric acid, sulfate, hydrochloric acid or nitric acid, and the etchant is one or more of ammonium bifluoride, potassium fluoroborate, potassium fluoride, and hydrofluoric acid. The mass percentage concentration of the oxidant in the chemical immersion solution is 12% to 38%, and the mass percentage concentration of the etchant is 25% to 42%.

[0040] In this embodiment, the etching effect of the glass is controlled by controlling the concentration of the oxidant and the etchant in the chemical immersion solution, thereby obtaining a BIPV glass with a gloss parameter in the range of 0.8GU-20GU, thereby achieving the purpose of effectively reducing light pollution.

[0041] Further, in some embodiments, in step S4, the flow rate of spraying the zinc oxide solution is to spray the zinc oxide solution containing 1-5g of zinc oxide every 15s. In step S5, the temperature of high temperature sintering and tempering is 680-720°C and the time is 120-150s.

[0042] In this embodiment, by controlling the spraying amount of the anti-mildew solution and coordinating the high-temperature sintering tempering process, the zinc oxide solution is completely integrated with the matte surface of the glass with low light pollution. While protecting the glass surface and preventing mildew, it avoids affecting the degree of integration of the anti-mildew coating and the glass surface due to excessive spraying, thereby affecting the integrity of the glass.

[0043] Further, in some embodiments, in step S4, the drying temperature is 150-200°C and the drying time is 15-20 minutes. In step S3, the cleaning liquid used for cleaning is deionized water; the specific process of cutting and edge grinding can be adjusted according to the actual product requirements. In step S1, the protective layer is an acid-resistant protective film with a viscosity of 100-300 g / cm 2 .

[0044] See also Figure 2 As shown, in the second aspect, the embodiment of the present application provides a BIPV glass panel 100 with mildew-proof and low light pollution functions, which is prepared by the above-mentioned method for preparing a BIPV glass panel with mildew-proof and low light pollution functions. The BIPV glass panel includes embossed glass 110, one side of the embossed glass 110 is a matte surface 120, and the surface of the matte surface 120 is sprayed with an anti-mildew layer 130.

[0045] In this embodiment, the BIPV glass panel prepared by the method for preparing a BIPV glass panel with mildew resistance and low light pollution functions can reduce light pollution and prevent glass mildew. It can be suitable for long-term outdoor environments, thereby increasing the outdoor service life of the BIPV glass panel and having high practical application value.

[0046] Some specific embodiments are listed below. It should be noted that the embodiments described below are exemplary and are only used to explain the present application, and should not be construed as limiting the present application. If specific techniques or conditions are not specified in the embodiments, the techniques or conditions described in the literature in this area or the product specifications are used. The reagents or instruments used without specifying the manufacturer are all conventional products that can be obtained commercially.

[0047] Example 1

[0048] This embodiment provides a method for preparing a BIPV glass panel with mildew resistance and low light pollution functions, comprising the following steps:

[0049] S1. Lamination treatment: a protective layer is provided on an embossed surface of the BIPV glass; wherein the BIPV glass adopts ordinary embossed glass of the photovoltaic industry with a size of 220*356*3.2mm;

[0050] S2, matte treatment; chemical immersion etching treatment is performed on the BIPV glass after coating in step S1, and the chemical immersion solution used includes an oxidant and an etchant, so that the other surface of the BIPV glass that is not coated forms a matte surface; the oxidant is a mass percentage concentration of 25%, and the etchant is a mass percentage concentration of 40% hydrofluoric acid;

[0051] S3, cleaning, cutting and edge grinding: the BIPV glass is cleaned with deionized water, cut into rectangles, and edged into ordinary C-shaped edges;

[0052] S4, mildew-proof treatment; spray the zinc oxide solution at a spraying amount of 1g / 15s on the matte surface of the BIPV glass treated in step S3, and dry it at 180°C for 15min;

[0053] S5, tempering treatment; the BIPV glass after mildew-proof treatment is subjected to high-temperature sintering and tempering at a temperature of 700°C for 120 seconds to obtain a BIPV glass panel with mildew-proof and low light pollution functions.

[0054] The BIPV glass panel prepared in Example 1 was subjected to a mildew resistance test. The test method was as follows: the glass was placed in a Hast (unsaturated) high-pressure accelerated aging test chamber, with a controlled temperature of 120 degrees Celsius and a humidity of 100% for 48 hours. The results are as follows: Figure 3 shown. Figure 3 The upper parts of the four glass panels were treated with mildew-proofing in step S4 of Example 1, while the lower parts were not treated with mildew-proofing. As can be seen from the figure, the upper parts of the glass panels that were treated with mildew-proofing showed no change after the test, indicating that the mildew-proofing effect was good; while the lower parts that were not treated with mildew-proofing showed mildew phenomena such as rainbow spots after the test.

[0055] Comparative Examples 1 to 3 and Examples 2 to 6

[0056] Comparative Examples 1 to 3 and Examples 2 to 6 respectively provide a method for preparing a BIPV glass panel with mildew-proof and low light pollution functions. Compared with Example 1, the difference is that in step S4, the spraying amount of zinc oxide is different, as shown in Table 1. The rest is roughly the same as Example 1 and will not be repeated here.

[0057] The glass prepared in Examples 1 to 6 and Comparative Examples 1 to 3 was tested for light pollution resistance. The test method was as follows: using a gloss tester, selecting a test angle of 60°, calibrating the test benchmark according to the instrument instructions, testing the gloss parameters (unit GU) of four corners and five points in the middle of each piece of glass, and calculating the average value. The same method was used to test four pieces of glass, and finally calculating the average gloss of the four pieces of glass. After lamination, the embossed surface (the side that has not been treated with mildew resistance) of the BIPV glass panel is laminated with the film and the black backplane using vacuum and heating to obtain a glass product. The results are shown in the following table.

[0058] Table 1 Test results of glass anti-light pollution of Examples 1 to 6 and Comparative Examples 1 to 3

[0059]

[0060]

[0061] It can be seen from Table 1 that there is a positive proportional relationship between the spraying amount of zinc oxide and the anti-pollution parameter (gloss). The greater the spraying amount, the higher the gloss parameter. Therefore, it is necessary to limit the spraying amount of zinc oxide to achieve a balance between the mildew-proof effect and the anti-light pollution function of the BIPV glass panel. In practice, too much zinc oxide spraying will not only increase the cost, but also affect the fusion effect of zinc oxide and the matte surface of the glass during high-temperature sintering and tempering, affect the physical and chemical properties of the glass, and cause the product to shed during use, thereby affecting its service life.

[0062] Comparative Example 4

[0063] Comparative Example 4 provides a method for preparing a BIPV glass panel with mildew-proof and low light pollution functions. Compared with Example 1, the difference is that in step S2, the chemical immersion liquid only contains sulfuric acid, and the rest is roughly the same as Example 1, which will not be repeated here.

[0064] Comparative Example 5

[0065] Comparative Example 5 provides a method for preparing a BIPV glass panel with mildew-proof and low light pollution functions. Compared with Example 1, the difference is that in step S2, the chemical immersion liquid only contains hydrofluoric acid, and the rest is roughly the same as Example 1, which will not be repeated here.

[0066] Comparative Example 6

[0067] Comparative Example 6 provides a method for preparing a BIPV glass panel with mildew-proof and low light pollution functions. Compared with Example 1, the difference is that in step S5, the high-temperature sintering tempering temperature is 650°C, and the rest is roughly the same as Example 1, which will not be repeated here.

[0068] Comparative Example 7

[0069] Comparative Example 7 provides a method for preparing a BIPV glass panel with mildew-proof and low light pollution functions. Compared with Example 1, the difference is that in step S5, the high-temperature sintering tempering temperature is 750°C, and the rest is roughly the same as Example 1, which will not be repeated here.

[0070] Comparative Example 8

[0071] Comparative Example 8 provides a method for preparing a BIPV glass panel with mildew-proof and low light pollution functions. Compared with Example 1, the difference is that in step S5, the high-temperature sintering and tempering time is 90s, and the rest is roughly the same as Example 1, which will not be repeated here.

[0072] Comparative Example 9

[0073] Comparative Example 9 provides a method for preparing a BIPV glass panel with mildew-proof and low light pollution functions. Compared with Example 1, the difference is that in step S5, the high-temperature sintering and tempering time is 180s, and the rest is roughly the same as Example 1, which will not be repeated here.

[0074] The glasses prepared in Comparative Examples 4 to 9 were subjected to light pollution resistance test and mechanical strength test, wherein the mechanical strength test method was to use a 1040g steel ball and a 1m high free fall impact height to test the glass breakage situation, and to test the flatness range of the glass. The results are shown in the following table.

[0075] Table 2 Test results of glass anti-light pollution of comparative examples 4 to 9

[0076]

[0077] Note: National standard GB / T 15763.2-2005: A 1040g steel ball will not break when it is free-falling from a height of 1m. National standard GB / T9963-2016: Flatness test method for tempered glass: Flatness grading standard:

[0078] According to the use requirements and surface quality requirements of tempered glass, GB / T 9963-2016 divides the flatness of tempered glass into three grades: first-class, second-class and third-class;

[0079] 1First-class products: There shall be no protrusions or depressions not exceeding 0.2mm in the entire inspection area.

[0080] 2. Second-class products: There shall be no protrusions or depressions not exceeding 0.3mm in the entire inspection area.

[0081] 3. Third grade products: There shall be no protrusions or depressions not exceeding 0.5mm in the entire inspection area.

[0082] It can be seen from Table 2 that when the chemical immersion solution contains only sulfuric acid as an oxidant, the glass cannot be etched for resistance to light pollution; when the chemical immersion solution contains only hydrofluoric acid, the gloss parameter will increase (anti-light pollution requires a small gloss parameter); and too high or too low a tempering temperature, or too long or too short a tempering time will affect the falling ball impact strength of the tempered glass, thereby affecting the performance of the tempered glass.

[0083] It should be noted that the present application is not limited to the above-mentioned embodiments. The above-mentioned embodiments are only examples, and the embodiments having the same structure as the technical idea and exerting the same effect within the scope of the technical solution of the present application are all included in the technical scope of the present application. In addition, without departing from the scope of the main purpose of the present application, various modifications that can be thought of by those skilled in the art to the embodiments and other methods of combining some of the constituent elements in the embodiments are also included in the scope of the present application.

Claims

1. A method for preparing a BIPV glass panel with mildew-proof and low light pollution functions, characterized in that: The following steps are involved: S1, coating treatment: providing a protective layer on an embossed surface of the BIPV glass; S2, matte treatment: chemical immersion etching treatment is performed on the BIPV glass coated in step S1, and the chemical immersion solution used includes an oxidant and an etchant, so that the other surface of the BIPV glass that is not coated forms a matte surface; S3, cleaning, cutting and edging; S4, mildew-proof treatment; spraying the zinc oxide solution on the matte surface of the BIPV glass treated in step S3, and drying; S5, tempering treatment; the BIPV glass after mildew-proof treatment is subjected to high-temperature sintering and tempering to obtain a BIPV glass panel with mildew-proof and low light pollution functions.

2. The method for preparing a BIPV glass panel with mildew-proof and low light pollution functions according to claim 1, characterized in that: In step S2, the oxidant is one or more of sulfuric acid, sulfate, hydrochloric acid or nitric acid, and the etchant is one or more of ammonium bifluoride, potassium fluoroborate, potassium fluoride and hydrofluoric acid.

3. The method for preparing a BIPV glass panel with mildew-proof and low light pollution functions according to claim 1, characterized in that: The mass percentage concentration of the oxidant in the chemical soaking solution is 12% to 38%, and the mass percentage concentration of the etching agent is 25% to 42%.

4. The method for preparing a BIPV glass panel with mildew-proof and low light pollution functions according to claim 1, characterized in that: In step S4, the flow rate of spraying the zinc oxide solution is 1-5 g of zinc oxide every 15 seconds.

5. The method for preparing a BIPV glass panel with mildew-proof and low light pollution functions according to claim 1, characterized in that: In step S5, the high temperature sintering and tempering is performed at a temperature of 680 to 720°C and a time of 120 to 150 seconds.

6. The method for preparing a BIPV glass panel with mildew-proof and low light pollution functions according to claim 4, characterized in that: In step S4, the drying temperature is 150-200° C. and the drying time is 15-20 minutes.

7. The method for preparing a BIPV glass panel with mildew-proof and low light pollution functions according to claim 1, characterized in that: In step S3, the cleaning liquid used for cleaning is deionized water.

8. The method for preparing a BIPV glass panel with mildew-proof and low light pollution functions according to claim 1, characterized in that: In step S1, the protective layer is an acid-resistant protective film with a viscosity of 100 to 300 g / cm 2 .

9. A BIPV glass panel with mildew-proof and low light pollution functions, characterized in that: The BIPV glass panel is prepared by the method for preparing the BIPV glass panel with mildew-proof and low light pollution functions as described in any one of claims 1 to 8.

10. The BIPV glass panel with mildew-proof and low light pollution functions according to claim 9, characterized in that: The BIPV glass panel comprises embossed glass, one side of the embossed glass is a matte surface, and a mildew-proof layer is sprayed on the surface of the matte surface.

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