Anti-dazzle photovoltaic glass and preparation method and application thereof

Abstract

The invention discloses anti-dazzle photovoltaic glass and a preparation method and application thereof.The light transmittance of the anti-dazzle photovoltaic glass is not lower than 89.0%, and the anti-dazzle photovoltaic glass comprises a glass substrate and an anti-dazzle coating formed on the surface of the glass substrate; the anti-dazzle coating is formed by coating the surface of the glass substrate with an anti-dazzle material and sintering the anti-dazzle material at a high temperature through a toughening furnace; the anti-dazzle material comprises the following components in parts by weight: an inorganic film-forming material, an environment-friendly solvent, inorganic light scattering particles, a dispersing agent, a flatting agent and a defoaming agent, the inorganic light scattering particles are made of microstructure spherical materials with the refractive index of 1.42-2.76, and the surfaces of the inorganic light scattering particles are provided with irregular hole structures. The preparation method comprises the following steps: S1, providing a glass substrate with a first surface or a second surface opposite to the first surface, and cleaning the surface of the glass substrate; s2, the first surface or the second surface is coated with the anti-dazzle material in a spraying, silk-screen printing or roller coating mode, then curing and tempering are conducted, an anti-dazzle coating is formed, and the anti-dazzle photovoltaic glass is prepared.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic glass, and in particular to an anti-glare photovoltaic glass and a preparation method thereof and application in photovoltaic modules. Background Art

[0002] At present, the encapsulation glass in photovoltaic modules generally uses tempered anti-reflective coated glass, which has no anti-glare function and will cause light pollution. Its use is restricted in some specific occasions, such as airports, highways and other places with requirements on light pollution.

[0003] Therefore, it is necessary for the encapsulated glass in the photovoltaic module to have a certain anti-glare function. At present, the photovoltaic glass used for anti-glare in the market is generally made in the following three ways: (1) The first is to use the glass rolling method to make a pattern structure on the glass surface to increase the diffuse reflection of the glass surface, thereby achieving an anti-glare effect; (2) The second is to use chemical etching technology to achieve the anti-glare effect on the glass surface; (3) The third is to achieve the anti-glare effect by applying an anti-glare coating on the glass surface.

[0004] However, the anti-glare glass made by glass rolling cannot achieve a glossiness of less than 10° when the incident angle of light on the glass surface is 60°, and the anti-glare effect is limited, so it is difficult to meet some higher anti-glare requirements; while the anti-glare glass made by chemical etching technology can make the glossiness of the glass surface less than 10° when the incident angle of light on the glass surface is 60°, but the anti-glare glass made by chemical etching technology will lead to unsatisfactory light transmittance of the glass, and the light transmittance in the 380-1100nm band is about 80%, which will affect the power generation function of the anti-glare photovoltaic module. rate, and the chemical etching method will use strong acid (such as hydrofluoric acid) during the production, which will cause serious pollution to the environment; and the existing anti-glare glass made by applying anti-glare coating, such as Chinese patent CN118063100A, adopts alkyd resin and silicon dioxide material to form a film at low temperature, but the anti-glare coating using alkyd resin as the film-forming material has the problems of poor weather resistance such as not being resistant to high temperature, low surface hardness and yellowing outdoors, so it cannot meet the requirements of long-term use of outdoor photovoltaic products, and cannot be used for photovoltaic modules with high weather resistance requirements. Summary of the invention

[0005] The purpose of the present invention is to provide an anti-glare photovoltaic glass and a preparation method thereof, aiming to solve the problems that the glossiness of the anti-glare glass currently made by rolling cannot meet the requirement of <10°, resulting in poor anti-glare effect, and the anti-glare glass currently made by chemical etching has low light transmittance and is easy to cause environmental pollution, and the anti-glare glass made by applying an anti-glare coating cannot meet the requirements of long-term outdoor use.

[0006] To achieve the above object, the present invention is implemented by the following technical solutions:

[0007] The present invention provides an anti-glare photovoltaic glass, the light transmittance of which is not less than 89.0%, and the glass comprises a glass substrate and an anti-glare coating formed on the surface of the glass substrate; the anti-glare coating is formed by coating an anti-glare material on the surface of the glass substrate and sintering at high temperature in a tempering furnace; wherein the anti-glare material comprises the following components: an inorganic film-forming material, an environmentally friendly solvent, inorganic light scattering particles, a dispersant, a leveling agent and a defoaming agent; wherein the inorganic light scattering particles are microstructured spherical materials with a refractive index of 1.42 to 2.76, and the surface of the inorganic light scattering particles has a rich irregular hole structure.

[0008] Specifically, the leveling agent is selected from one or a combination of at least two of BYK-307, BYK-377, BYK-378, BYK-354 and BYK-358.

[0009] The dispersant is selected from one or a combination of at least two of DISPERBYK-110, DISPERBYK-160, DISPERBYK-162 and DISPERBYK-180. The defoamer is selected from one of OTD defoamer and polyether defoamer.

[0010] The anti-glare material of the present invention may also include an inorganic nano-pigment, which may be selected from any one or more of iron oxide red, copper chromium black, iron oxide yellow, iron oxide black, and inorganic interference pearlescent powder. By adding inorganic nano-pigments to the anti-glare material, it can not only achieve the effect of improving the aesthetics of the anti-glare photovoltaic glass, but also have the anti-glare function, and can also ensure that the light transmittance of the anti-glare coating is not greatly affected, and will not cause the power generation power of the anti-glare photovoltaic assembly to decrease significantly, but the addition of inorganic nano-pigments can improve the aesthetics of the assembly.

[0011] Furthermore, an anti-glare photovoltaic glass: the anti-glare material includes the following components in mass fractions: 65.0-80.0% of inorganic film-forming material, 10.0-20.0% of environmentally friendly solvent, 5.0-15.0% of inorganic light scattering particles, 1.0-2.0% of dispersant, 0.5-1.5% of leveling agent and 0.5-1.5% of defoaming agent.

[0012] Furthermore, an anti-glare photovoltaic glass: the inorganic film-forming material is selected from one or a mixture of silicon oxide sol, aluminum oxide sol, titanium oxide sol, and zirconium oxide sol.

[0013] Furthermore, in an anti-glare photovoltaic glass, the environmentally friendly solvent is propylene glycol methyl ether and / or isopropyl alcohol.

[0014] Furthermore, in an anti-glare photovoltaic glass, the particle size of the inorganic light scattering particles is 100 to 10000 nm, and the inorganic light scattering particles are selected from any one or more of silicon dioxide, titanium dioxide, aluminum oxide, and yttrium oxide. Preferably, the particle size of the inorganic light scattering particles is 150 to 300 nm.

[0015] Furthermore, in an anti-glare photovoltaic glass, the thickness of the anti-glare coating is set to 1.0-20.0 μm. Preferably, the thickness of the anti-glare coating is set to 15.0-20.0 μm.

[0016] The present invention also provides a method for preparing anti-glare photovoltaic glass, which comprises the following specific steps:

[0017] S1, providing a glass substrate having a first surface or a second surface opposite to each other, and cleaning the surface thereof;

[0018] S2. Applying the anti-glare material to the first surface or the second surface by spraying, screen printing or roller coating, and then curing and tempering to form an anti-glare coating, thereby preparing an anti-glare photovoltaic glass.

[0019] Furthermore, a method for preparing an anti-glare photovoltaic glass is provided: the curing temperature is 150 to 250° C., and the curing time is 3 to 10 minutes.

[0020] Furthermore, a method for preparing anti-glare photovoltaic glass: the tempering temperature is 600-900°C, and the tempering time is 60-500 seconds. Preferably, the tempering temperature is 650-730°C, and the tempering time is 65-250 seconds.

[0021] The present invention also provides an application of an anti-glare photovoltaic glass, and an application of the anti-glare photovoltaic glass in an anti-glare photovoltaic assembly.

[0022] Specifically, the anti-glare photovoltaic assembly includes an anti-glare photovoltaic glass, a packaging film, a battery layer, a packaging film and a back glass which are stacked in sequence from top to bottom.

[0023] Beneficial effects of the present invention:

[0024] (1) The present invention forms an anti-glare coating by coating a special anti-glare material on the surface of a photovoltaic glass substrate. The anti-glare coating contains microspherical inorganic light scattering particles with irregular pore structures on the surface, which can make light form irregular multi-angle diffuse reflection on the surface of the microspherical particles, thereby greatly reducing the glossiness of the glass surface, achieving an excellent effect of making the glossiness of the anti-glare photovoltaic glass lower than 10°, thereby achieving a good anti-glare effect and reducing light pollution. In addition, the preferred inorganic film-forming material of the present invention can also significantly improve the high temperature resistance of the anti-glare coating. In the process of preparing the anti-glare photovoltaic glass, a high temperature tempering process can be carried out to greatly improve the hardness of the anti-glare coating, thereby effectively improving the scratch resistance and weather resistance of the anti-glare coating, which is conducive to maintaining the long-term outdoor use of the anti-glare glass and avoiding the loss of the anti-glare effect of the anti-glare coating due to scratches.

[0025] (2) The present invention optimizes the components of the anti-glare material, and the anti-glare coating formed by the anti-glare material has a higher light transmittance. The anti-glare coating can ensure that the light transmittance of the anti-glare photovoltaic glass is prevented from being lower than 89.0% under the premise of having a good anti-glare effect, thereby ensuring the power generation efficiency of the anti-glare photovoltaic module. The anti-glare material formed by the present invention by optimizing the components can be firmly bonded to the glass substrate (adhesion level 0) after being cured on the glass surface to form the anti-glare coating. Therefore, the anti-glare coating is not easy to fall off during use and has good scratch resistance. During use, the surface is not easy to be scratched and the anti-glare effect is not easy to be lost.

[0026] (3) The anti-glare material prepared by the present invention by optimizing the components, the anti-glare coating formed by it also has a relatively high film hardness (film pencil hardness>5H). The inorganic light scattering particles used in the anti-glare material of the present invention not only have a strong anti-glare effect and anti-scratch performance, but also have good scratch resistance and weather resistance. In summary, the present invention optimizes the formula of the anti-glare material so that the anti-glare coating has high transparency and weather resistance and can be used in outdoor environments for a long time. The present invention optimizes the formula of the anti-glare material, and its solvent adopts an environmentally friendly water-based or alcohol ether solvent, which can reduce the emission of VOC and is more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 This is a schematic structural diagram of an anti-glare photovoltaic glass provided in Example 1 of the present invention.

[0029] Markings in the figure: 1-glass substrate, 2-anti-glare coating. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", etc., indicating the position or positional relationship, are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. Moreover, the terms "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0032] Example 1

[0033] like Figure 1 As shown, this embodiment 1 provides an anti-glare photovoltaic glass, which includes a glass substrate 1 and an anti-glare coating 2 formed on the glass substrate 1, and the thickness of the anti-glare coating 2 is 20.0 μm;

[0034] The anti-glare coating 2 is formed by coating the anti-glare material on the surface of the glass substrate 1 and curing it by high-temperature sintering in a tempering furnace;

[0035] The anti-glare material comprises the following components in mass fraction: 80.0% inorganic film-forming material, 12.0% environmentally friendly solvent, 6.0% inorganic light scattering particles, 1.0% dispersant, 0.5% leveling agent and 0.5% defoaming agent;

[0036] Among them, the inorganic film-forming material is silica sol, the environmentally friendly solvent is propylene glycol methyl ether, the inorganic light scattering particles are titanium dioxide with a refractive index of 2.76, a particle size of 150 to 300 nm and a rich irregular pore structure on the surface, the dispersant is DISPERBYK-110, the leveling agent is BYK-307, and the defoaming agent is OTD defoaming agent.

[0037] The method for preparing the anti-glare photovoltaic glass in the above-mentioned embodiment 1 comprises the following specific steps:

[0038] S1, providing a glass substrate 1 having a first surface or a second surface opposite to each other, and cleaning the surface thereof;

[0039] S2. The anti-glare material is applied to the first surface of the glass substrate 1 by spraying, and then cured at 180° C. for 3 minutes, and then tempered at 680° C. for 100 seconds in a tempering furnace to form an anti-glare coating 2 with a thickness of 20.0 μm, thereby obtaining an anti-glare photovoltaic glass.

[0040] Example 2

[0041] This embodiment 2 provides an anti-glare photovoltaic glass, which includes a glass substrate 1 and an anti-glare coating 2 formed on the glass substrate 1, and the thickness of the anti-glare coating 2 is 18.0 μm;

[0042] The anti-glare coating 2 is formed by coating the anti-glare material on the surface of the glass substrate 1 and curing it by high-temperature sintering in a tempering furnace;

[0043] The anti-glare material includes the following components by mass fraction: 71.5% inorganic film-forming material, 15.0% environmentally friendly solvent, 10% inorganic light scattering particles, 1.5% dispersant, 1.0% leveling agent, and 1.0% defoaming agent;

[0044] Among them, the inorganic film-forming material is alumina sol, the environmentally friendly solvent is isopropyl alcohol, the inorganic light scattering particles are silica with a refractive index of 1.62, a particle size of 150 to 300 nm and a rich irregular pore structure on the surface, the dispersant is DISPERBYK-160, the leveling agent is BYK-378, and the defoamer is a polyether defoamer, specifically propylene glycol polyoxypropylene ether.

[0045] The method for preparing the anti-glare photovoltaic glass in the above-mentioned embodiment 2 comprises the following specific steps:

[0046] S1, providing a glass substrate 1 having a first surface or a second surface opposite to each other, and cleaning the surface thereof;

[0047] S2. The above anti-glare material is applied to the first surface of the glass substrate 1 by screen printing, and then cured at 150° C. for 5 minutes, and then tempered at 650° C. for 150 seconds in a tempering furnace to form an anti-glare coating 2 with a thickness of 18.0 μm, thereby obtaining an anti-glare photovoltaic glass.

[0048] Example 3

[0049] This embodiment 3 provides an anti-glare photovoltaic glass, which includes a glass substrate 1 and an anti-glare coating 2 formed on the glass substrate 1, and the thickness of the anti-glare coating 2 is 15.0 μm;

[0050] The anti-glare coating 2 is formed by coating the anti-glare material on the surface of the glass substrate 1 and curing it by high-temperature sintering in a tempering furnace;

[0051] The anti-glare material comprises the following components by mass fraction: 65.0% inorganic film-forming material, 17.0% environmentally friendly solvent, 13.0% inorganic light scattering particles, 2.0% dispersant, 1.5% leveling agent and 1.5% defoaming agent;

[0052] Among them, the inorganic film-forming material is selected from silicon oxide sol and zirconium oxide sol in a mass ratio of 1:1, the environmentally friendly solvent is selected from propylene glycol methyl ether, the inorganic light scattering particles are selected from aluminum oxide with a refractive index of 1.4, a particle size of 150 to 300 nm and a rich irregular pore structure on the surface, the dispersant is selected from DISPERBYK-180, the leveling agent is selected from BYK-354, and the defoaming agent is selected from OTD defoaming agent.

[0053] The method for preparing the anti-glare photovoltaic glass in the above-mentioned embodiment 3 comprises the following specific steps:

[0054] S1, providing a glass substrate 1 having a first surface or a second surface opposite to each other, and cleaning the surface thereof;

[0055] S2. The anti-glare material is coated on the first surface of the glass substrate 1 by screen printing, and then cured at 200° C. for 8 minutes, and then tempered at 730° C. for 70 seconds in a tempering furnace to form an anti-glare coating 2 with a thickness of 15.0 μm to obtain an anti-glare photovoltaic glass.

[0056] Example 4

[0057] Example 4 provides an application of an anti-glare photovoltaic glass, wherein the anti-glare photovoltaic glass of Example 1 is used to manufacture an anti-glare photovoltaic assembly;

[0058] The anti-glare photovoltaic assembly comprises the anti-glare photovoltaic glass of Example 1, a packaging film, a battery layer, a packaging film and a back glass which are stacked in sequence from top to bottom.

[0059] Example 5

[0060] Example 5 provides an application of an anti-glare photovoltaic glass, wherein the anti-glare photovoltaic glass of Example 2 is used to manufacture an anti-glare photovoltaic assembly;

[0061] The anti-glare photovoltaic assembly comprises the anti-glare photovoltaic glass of Example 2, a packaging film, a battery layer, a packaging film and a back glass which are stacked in sequence from top to bottom.

[0062] Example 6

[0063] Example 6 provides an application of an anti-glare photovoltaic glass, wherein the anti-glare photovoltaic glass of Example 3 is used to manufacture an anti-glare photovoltaic module;

[0064] The anti-glare photovoltaic assembly comprises the anti-glare photovoltaic glass of Example 3, a packaging film, a battery layer, a packaging film and a back glass which are stacked in sequence from top to bottom.

[0065] Comparative Example 1

[0066] The difference between Comparative Example 1 and Example 1 is that, in Comparative Example 1, inorganic film-forming material is not used, but alkyd resin is used, and the other conditions are the same as those in Example 1.

[0067] Comparative Example 2

[0068] The difference between Comparative Example 2 and Example 1 is that no inorganic light scattering particles are added in Comparative Example 2, and the other conditions are the same as those in Example 1.

[0069] test:

[0070] (1) Gloss test: The glossiness of the anti-glare photovoltaic glass obtained in the above Examples 1 to 3 was tested at an incident angle of 60°, and the results showed that: ① The glossiness of the surface of the anti-glare photovoltaic glass in Example 1 was 3.1° when the incident angle of light was 60°; ② The glossiness of the surface of the anti-glare photovoltaic glass in Example 2 was 5.6° when the incident angle of light was 60°; ③ The glossiness of the surface of the anti-glare photovoltaic glass in Example 3 was 6.5° when the incident angle of light was 60°; ④ The glossiness of the surface of the anti-glare photovoltaic glass in Comparative Example 1 was 12.6° when the incident angle of light was 60°; ⑤ The glossiness of the surface of the anti-glare photovoltaic glass in Comparative Example 2 was 15.7° when the incident angle of light was 60°.

[0071] It can be seen that by optimizing the components of the anti-glare material, the present invention can make the glossiness of the obtained anti-glare glass less than 10°, which can bring about a better anti-glare effect. Compared with the glass rolling method, the present invention can make the glass have a lower glossiness and a better anti-glare effect. Compared with the chemical etching method, it can avoid the environmental pollution caused by the use of strong acid, and has a simple process and lower cost.

[0072] (2) Light transmittance test: The anti-glare photovoltaic glasses obtained in the above-mentioned Examples 1 to 3 and Comparative Examples 1 to 2 and the glass substrates used therein were subjected to light transmittance tests within the wavelength range of the spectral response of solar cells (380 to 1100 nm). The results showed that: ① The average light transmittance of the anti-glare photovoltaic glass obtained in Example 1 was about 89.6% (the light transmittance of the glass substrate used in Example 1 was about 92.3%); ② The average light transmittance of the anti-glare photovoltaic glass obtained in Example 2 was about 90.5% (the light transmittance of the glass substrate used in Example 2 was about 93.5%); ③ The average light transmittance of the anti-glare photovoltaic glass obtained in Example 3 was about 91.2% (the light transmittance of the glass substrate used in Example 3 was about 94.4%); ④ The average light transmittance of the anti-glare photovoltaic glass obtained in Comparative Example 1 was about 81.7% (the light transmittance of the glass substrate used in Comparative Example 1 was about 92.3%); ⑤ The average light transmittance of the anti-glare photovoltaic glass obtained in Comparative Example 2 was about 88.9% (the light transmittance of the glass substrate used in Comparative Example 2 was about 92.3%).

[0073] It can be seen that the anti-glare coating of the present invention has little effect on the transmittance of the glass substrate after coating, and it can ensure that the transmittance of the glass substrate is not greatly affected, so that the anti-glare photovoltaic glass prepared can have a higher transmittance under the premise of having a lower glossiness, so that the power generation efficiency of the final anti-glare photovoltaic component is guaranteed. However, since comparative example 1 uses alkyd resin, it will turn yellow under ultraviolet radiation, which seriously affects the transmittance of the anti-glare glass. The hardness of the film layer is also low, and its scratch resistance is poor, which cannot meet the long-term outdoor use. It can be seen from the transmittance test results of Example 1 and Comparative Example 2 that the inorganic light scattering particles introduced into the anti-glare material formula of the present invention will not cause a significant decrease in transmittance, and can ensure that the anti-glare photovoltaic glass has a higher transmittance, thereby ensuring the power generation efficiency of the anti-glare component. At the same time, the addition of inorganic light scattering particles in the anti-glare material of the present invention can significantly reduce the glossiness of the anti-glare glass surface and improve its anti-glare effect. In addition, the present invention can also significantly enhance the film hardness of the anti-glare coating by adding inorganic light scattering particles (the film hardness of the anti-glare coating in Example 1 can reach above 5H, while the film hardness of the anti-glare coating in Comparative Example 2 is about 6H), thereby improving its scratch resistance, which is beneficial to maintaining the long-term use of the anti-glare photovoltaic glass outdoors and avoiding the loss of the anti-glare effect of the anti-glare coating due to scratches.

[0074] (3) Adhesion test: The adhesion of the anti-glare coating in the anti-glare photovoltaic glass obtained in Examples 1 to 3 was tested. The results showed that the adhesion of the film layer of the anti-glare photovoltaic glass in Examples 1 to 3 reached level 0, indicating that the adhesion performance of the anti-glare coating was very good and it was not easy to fall off during use, thereby not easily losing the anti-glare effect.

[0075] (4) Weather resistance test: The anti-glare photovoltaic glass of the above-mentioned embodiments 1 to 3 was subjected to the following weather resistance tests:

[0076] ① Washing resistance test: Use a washing powder solution with a mass fraction of 0.5% and a pH of 9.5-11 to wash 400 times, and measure the glossiness and transmittance data at an incident angle of 60° after washing. The specific test results are shown in Tables 1 to 3 below;

[0077] ② Neutral salt spray resistance test: Use NaCl solution with a concentration of 45-55g / L and a pH of 6.5-7.2, spray continuously for 96 hours at a temperature of 35℃±2℃, and measure the gloss and transmittance data at an incident angle of 60° after the neutral salt spray test. The specific test results are shown in Tables 1 to 3 below;

[0078] ③ Acid resistance test: The anti-glare photovoltaic glass to be tested is immersed in a 1.0 mol / L hydrochloric acid solution at 23±2°C for 24 hours, and the glossiness and transmittance data at an incident angle of 60° after the acid resistance test are measured. The specific test results are shown in Tables 1 to 3 below;

[0079] ④ Alkali resistance test: The anti-glare photovoltaic glass to be tested is immersed in a 1.0 mol / L ammonia solution at 23±2°C for 24 hours, and the glossiness and transmittance data at an incident angle of 60° after the alkali resistance test are measured. The specific test results are shown in Tables 1 to 3 below;

[0080] ⑤ Heat and humidity resistance test (DH1000): Place the anti-glare photovoltaic glass to be tested in an environment with a temperature of 85±2°C and a relative humidity of 85±5% for 1000 hours, and measure the glossiness and transmittance data at an incident angle of 60° after the heat and humidity resistance test. The specific test results are shown in Tables 1 to 3 below;

[0081] ⑥ Humidity and frost resistance test (HF10): Place the anti-glare photovoltaic glass to be tested in an environment with a relative humidity of 85±5% and reduce the temperature from 85±2°C to -40±2°C for 10 cycles. Measure the glossiness and transmittance data at an incident angle of 60° after the humidity and frost resistance test. For specific test results, see Tables 1 to 3 below.

[0082] ⑦ Thermal cycle test (TC200): The anti-glare photovoltaic glass to be tested is placed in an environment with a relative humidity of 85±5% and heated from -40±2°C to 85±2°C for 200 cycles. The glossiness and transmittance data at an incident angle of 60° after the thermal cycle test are measured. The specific test results are shown in Tables 1 to 3 below.

[0083] ⑧ UV resistance test: At a temperature of 60±5℃, the anti-glare photovoltaic glass to be tested is subjected to ultraviolet radiation with a wavelength of 280-385nm and a dose of 60kWh / m 2 , where the ultraviolet radiation with a wavelength of 280-320nm is at least 20kWh / m 2 , measure the glossiness and transmittance data at an incident angle of 60° after the UV resistance test. The specific test results are shown in Tables 1 to 3 below. Table 1 shows the glossiness and transmittance results of the anti-glare photovoltaic glass before and after the weather resistance test of Example 1 above

[0084]

[0085] Table 2 shows the glossiness and transmittance of the anti-glare photovoltaic glass before and after the weather resistance test of Example 2 above.

[0086]

[0087]

[0088] Table 3 shows the glossiness and transmittance results of the anti-glare photovoltaic glass of Example 3 before and after the weather resistance test

[0089]

[0090] In the above Tables 1 to 3, since different pieces of glass from the same production batch of glass are used to perform various weather resistance tests, the glossiness and light transmittance of each piece of glass before the test are slightly different, which is a normal error.

[0091] It can be seen from the difference before and after the weather resistance index test in Tables 1 to 3 that the difference in glossiness of the anti-glare photovoltaic glass of Examples 1 to 3 before and after the weather resistance test is less than 1°, and the difference in transmittance is also less than 1.0%, which shows that the anti-glare photovoltaic glass formed by the optimization of the anti-glare material components of the present invention has excellent weather resistance. Therefore, after the anti-glare photovoltaic glass is used in the anti-glare photovoltaic module, it can meet the requirements of the long-term outdoor use of the anti-glare photovoltaic module, and can be used for photovoltaic modules with high weather resistance requirements.

[0092] The above are preferred embodiments of the present invention and are only used to explain the present invention, not to limit the present invention. Any obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. An anti-glare photovoltaic glass, characterized in that: The anti-glare photovoltaic glass has a light transmittance of not less than 89.0%, and comprises a glass substrate (1) and an anti-glare coating (2) formed on the surface of the glass substrate (1); The anti-glare coating (2) is formed by coating an anti-glare material on the surface of the glass substrate (1) and sintering at high temperature in a tempering furnace; The anti-glare material comprises the following components: inorganic film-forming material, environmentally friendly solvent, inorganic light scattering particles, dispersant, leveling agent and defoaming agent; The inorganic light scattering particles are made of microstructured spherical materials with a refractive index of 1.42 to 2.76, and have irregular holes on their surface.

2. The anti-glare photovoltaic glass according to claim 1, characterized in that: The anti-glare material comprises the following components by mass fraction: 65.0-80.0% of inorganic film-forming material, 10.0-20.0% of environmentally friendly solvent, 5.0-15.0% of inorganic light scattering particles, 1.0-2.0% of dispersant, 0.5-1.5% of leveling agent and 0.5-1.5% of defoaming agent.

3. The anti-glare photovoltaic glass according to claim 1 or 2, characterized in that: The inorganic film-forming material is selected from one or a mixture of silicon oxide sol, aluminum oxide sol, titanium oxide sol and zirconium oxide sol.

4. The anti-glare photovoltaic glass according to claim 1 or 2, characterized in that: The environmentally friendly solvent is selected from propylene glycol methyl ether and / or isopropyl alcohol.

5. The anti-glare photovoltaic glass according to claim 1 or 2, characterized in that: The inorganic light scattering particles have a particle size of 100 to 10000 nm and are selected from any one or more of silicon dioxide, titanium dioxide, aluminum oxide, and yttrium oxide.

6. The anti-glare photovoltaic glass according to claim 1, characterized in that: The thickness of the anti-glare coating (2) is set to 1.0-20.0 μm.

7. The method for preparing an anti-glare photovoltaic glass according to any one of claims 1 to 6, characterized in that: The method comprises the following steps: S1, providing a glass substrate (1) having a first surface or a second surface opposite to each other, and cleaning the surface thereof; S2, applying the anti-glare material to the first surface or the second surface by spraying, screen printing or roller coating, and then curing and tempering to form an anti-glare coating (2) to obtain an anti-glare photovoltaic glass.

8. The method for preparing anti-glare photovoltaic glass according to claim 7, characterized in that: The curing temperature is 150-250° C., and the curing time is 3-10 minutes.

9. The method for preparing an anti-glare photovoltaic glass according to claim 7, characterized in that: The tempering temperature is 600-900° C., and the tempering time is 60-500 seconds.

10. An application of anti-glare photovoltaic glass, characterized in that: Use of the anti-glare photovoltaic glass according to any one of claims 1 to 6 in an anti-glare photovoltaic module.

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