Method for preparing anti-glare glass

Abstract

The present invention relates to the technical field of glass surface treatment, and specifically to a method for preparing anti-glare glass. The method comprises preparing a polystyrene microsphere emulsion, drop-coating the emulsion onto the surface of a glass substrate, and then immersing the glass substrate in deionized water. The polystyrene microsphere emulsion is evenly dispersed on the deionized water surface to form a large-area thin film floating on the deionized water surface. After standing, a sodium lauryl sulfate solution is drop-coated into the deionized water. After the liquid surface stabilizes, the glass substrate is pulled upward at a uniform speed to transfer the polystyrene microsphere film onto the glass substrate. The glass substrate is then heat-treated and then etched in a glass etching solution. After etching, the glass substrate is sequentially rinsed with deionized water and toluene to obtain the anti-glare glass. The preparation method of the present invention is simple and efficient, and can regulate the etching depth of the glass, thereby producing anti-glare glass with an adjustable gloss between 50 and 80 and an adjustable haze between 5 and 20%.

Description

Technical Field

[0001] The invention relates to the technical field of glass surface treatment, in particular to a method for preparing anti-glare glass. Background Art

[0002] Anti-glare glass is a functional glass with a special surface structure. It creates a micron-level rough structure on the glass surface to diffusely reflect incident light, effectively reducing mirror reflection and glare interference, significantly improving the visibility and comfort of display devices in strong light or outdoor environments. It is widely used in electronic displays, vehicle-mounted central control systems, industrial control interfaces, and smart home fields.

[0003] Currently, the production of anti-glare glass relies primarily on two technical approaches: spray coating and chemical etching. The spray coating method applies an anti-glare coating containing nanoparticles to the glass surface, creating a moderately rough, diffusely reflective surface. This method offers advantages such as ease of operation, high production efficiency, and low cost, making it particularly suitable for large-scale industrial applications. However, due to the relatively weak adhesion and low hardness of the spray coating, its wear resistance is limited, making it prone to scratching or partial detachment during use, affecting long-term stability. The chemical etching method involves immersing the glass in an acidic or alkaline solution for etching, directly creating a microscopic roughness structure on the glass substrate surface. Anti-glare glass produced in this manner exhibits excellent structural stability and wear resistance, making it suitable for applications requiring high durability. However, this method has high technical barriers to adjusting the etched morphology and etch depth during the etching process, resulting in high processing complexity, relatively low yield, and the inability to flexibly control the gloss and haze of the glass, limiting its widespread application. Summary of the Invention

[0004] In response to the above technical problems, the present invention provides a method for preparing anti-glare glass, which can prepare anti-glare glass with an adjustable gloss between 50 and 80 and an adjustable haze between 5 and 20%. The gloss and haze of the glass can be designed according to actual needs. This is a method for preparing anti-glare glass with controllable structure and designable gloss and haze.

[0005] The present invention is specifically implemented through the following technical solutions. A method for preparing anti-glare glass proposed in the present invention comprises the following steps:

[0006] (1) After cleaning the glass substrate, place it in a plasma cleaning machine to make the surface of the glass substrate hydrophilic;

[0007] (2) Dispersing polystyrene microsphere powder into a mixture of alcohol and deionized water, and performing ultrasonic oscillation using a cell disruptor to obtain a polystyrene microsphere emulsion;

[0008] (3) adding deionized water to a glass container, and applying the polystyrene microsphere emulsion prepared in step (2) to the glass substrate treated in step (1), and then slowly immersing the glass substrate in the deionized water in the glass container, so that the polystyrene microsphere emulsion is evenly spread on the surface of the deionized water to form a large-area film floating on the surface of the deionized water;

[0009] (4) After step (3) is completed, the mixture is allowed to stand for 30 to 100 minutes, and then a 2% by mass sodium dodecyl sulfate solution is added dropwise to the aforementioned glass container; the addition of sodium dodecyl sulfate can change the surface tension of the liquid, and the liquid surface will suddenly spread outward from the point of incorporation, making the polystyrene microspheres more densely arranged on the liquid surface;

[0010] (5) After step (4) is completed, after the liquid level in the glass container stabilizes, the glass substrate is pulled upward at a constant speed of 2 to 10 cm / min to transfer the polystyrene microsphere film to the glass substrate;

[0011] (6) After step (5) is completed, the glass substrate with the polystyrene microsphere film is heated at 110-130°C to melt the polystyrene microspheres slightly and make them more firmly bonded to the glass substrate;

[0012] (7) After step (6) is completed, the glass substrate is immersed in a glass etching solution. The glass etching solution selectively etches the glass substrate through the gaps between the polystyrene microspheres, and the glass covered by the polystyrene microspheres is not etched;

[0013] (8) After step (7) is completed, the surface of the glass substrate is cleaned with deionized water and then ultrasonically cleaned in a toluene solvent to remove the polystyrene microsphere film on the surface of the glass substrate to obtain anti-glare glass.

[0014] In the aforementioned method for preparing anti-glare glass, in step (1), the glass substrate is cleaned in a plasma cleaning machine for 10 to 30 minutes.

[0015] In the aforementioned method for preparing anti-glare glass, in step (2), the particle size of the polystyrene microsphere powder is 800 nm, the volume ratio of alcohol to deionized water in the mixed solution is 1:1, and the mass concentration of the polystyrene microspheres in the polystyrene microsphere emulsion is 1%.

[0016] In the aforementioned method for preparing anti-glare glass, in step (2), the ultrasonic oscillation time is 20 to 60 seconds.

[0017] In the above-mentioned method for preparing anti-glare glass, in step (3), the amount of polystyrene microsphere emulsion applied to the surface of the glass substrate is: 2 2 mL of polystyrene microsphere emulsion was drop-coated on the surface of the glass substrate (single side area).

[0018] In the aforementioned method for preparing anti-glare glass, in step (4), the amount of sodium dodecyl sulfate added is: according to the size of the glass substrate, 0.15 mL of sodium dodecyl sulfate solution is added dropwise per square centimeter of the glass substrate (single side area).

[0019] In the aforementioned method for preparing anti-glare glass, in step (6), the heating time is 10 to 30 minutes.

[0020] In the aforementioned method for preparing anti-glare glass, in step (7), the main component of the glass etching solution is hydrofluoric acid, the mass concentration of hydrofluoric acid in the glass etching solution is 3-6%, etching is performed at room temperature, and the immersion time is 0.5-2 minutes. Commercially available glass etching solutions with other components may also be used.

[0021] In the aforementioned method for preparing the anti-glare glass, in step (8), the ultrasonic cleaning time in the toluene solvent is 10 to 20 minutes.

[0022] The etched surface of the anti-glare glass finally obtained by the aforementioned method for preparing the anti-glare glass comprises a plurality of regularly arranged circular glass surfaces and etched grooves interspersed between the circular glass surfaces, and the diameter of the circular glass surfaces is about 0.8 μm.

[0023] The aforementioned method for preparing anti-glare glass obtains anti-glare glass with different glossiness and haze by regulating the concentration of hydrofluoric acid in the etching solution and the etching time. The glossiness of the anti-glare glass at 60° is adjustable between 50 and 80, and the haze is adjustable between 5 and 20%.

[0024] Compared with the prior art, the present invention has obvious advantages and beneficial effects. By means of the above technical solution, the present invention can achieve considerable technological advancement and practicality, and has a wide range of utilization value. It has at least the following advantages:

[0025] The present invention first drips a polystyrene microsphere emulsion onto the surface of a glass substrate. After being immersed in deionized water, the polystyrene microspheres are evenly dispersed on the deionized water surface to form a large-area film floating on the deionized water surface. Sodium lauryl sulfate is added to the deionized water to tightly arrange the polystyrene microspheres on the liquid surface. The glass is then pulled upward at a uniform speed to transfer the polystyrene microspheres on the liquid surface to the glass substrate. The polystyrene microspheres are slightly melted by heating to firmly bond to the surface of the glass substrate. There are gaps between the polystyrene microspheres. During the etching process, the etching liquid selectively etches only into the gaps between the polystyrene microspheres, forming etched grooves in the gaps between the polystyrene microspheres, while the glass covered by the polystyrene microspheres is not etched. After cleaning the polystyrene microsphere mask, the etched surface of the glass substrate is left with unetched circular glass surfaces and etched grooves sandwiched between the circular glass surfaces. The circular glass surfaces are uniform in size and regularly arranged, so that the etched grooves formed by etching on the glass surface are also evenly arranged, ensuring the consistency of the mechanical and optical properties of various parts of the anti-glare glass. By adjusting the concentration of hydrofluoric acid in the etching solution and the etching time, the etching depth can be adjusted, thereby obtaining anti-glare glass with different glossiness and haze.

[0026] The preparation method of the present invention is simple and efficient, and the etching operation is controllable. It can prepare anti-glare glass with a glossiness adjustable between 50 and 80 and a haze adjustable between 5 and 20% at 60°. The glossiness and haze of the glass can be designed according to actual needs. The present invention provides a preparation method for anti-glare glass with controllable structure and designable glossiness and haze. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic cross-sectional view of the anti-glare glass prepared by the present invention.

[0028] Figure 2 This is a SEM image of the etched surface of the anti-glare glass prepared by the present invention magnified 5000 times.

[0029] 1-Glass substrate, 2-Etched grooves. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] Below with specific embodiment, the present invention is described in detail, and in the following embodiment, unreceived specific conditions person, all carry out according to the condition of normal condition or manufacturer's suggestion.Raw materials used, reagent are not receivable manufacturer, are the conventional products that can be obtained by commercially available purchase.In the embodiment, the cleaning of glass substrate can adopt mass fraction to be 98% alcohol, but the invention is not limited to this, and used glass etching liquid in the following embodiment is that mass fraction is 3~6% hydrofluoric acid solution, but the invention is not limited to this, also can use the glass etching liquid of commercially available other compositions. Example 1

[0032] (1) After cleaning the glass substrate 1, place it in a plasma cleaning machine and clean it for 20 minutes to make the surface of the glass substrate hydrophilic;

[0033] (2) Disperse polystyrene microsphere powder with a particle size of 800 nm into a mixture of alcohol and deionized water (v:v=1:1) and perform ultrasonic oscillation for 40 s using a cell disruptor to form a polystyrene microsphere emulsion. The concentration of polystyrene microspheres in the polystyrene microsphere emulsion is 1 wt%;

[0034] (3) Add deionized water to a glass container and drop the polystyrene microsphere emulsion prepared in step (2) onto the glass substrate treated in step (1) at a drop size of 15 cm 2 2 mL of polystyrene microsphere emulsion was drop-coated on the surface of a glass substrate (single-sided area). The glass substrate was then slowly immersed in the deionized water in the aforementioned glass container. The polystyrene microsphere emulsion was evenly dispersed on the surface of the deionized water, forming a large film floating on the surface of the deionized water.

[0035] (4) After step (3) is completed, let it stand for 60 minutes, and then add a 2% by mass fraction of sodium dodecyl sulfate solution to the aforementioned glass container. According to the surface area of ​​the glass substrate (single-side area), 0.15 mL of sodium dodecyl sulfate solution is added per square centimeter of the glass substrate. After the addition of sodium dodecyl sulfate, the surface tension of the liquid surface is changed, and the liquid surface suddenly spreads outward from the point where sodium dodecyl sulfate is dropped as the center, so that the polystyrene microspheres are arranged more closely on the liquid surface.

[0036] In this step, sodium lauryl sulfate can be dripped into the liquid from one side of the glass container. After the dripping, the surface tension of the liquid changes, squeezing the polystyrene microspheres toward the other side, making the polystyrene microspheres more densely arranged (the same below).

[0037] (5) After step (4) is completed, wait until the liquid level in the glass container stabilizes (which takes about 10 to 20 minutes), and then pull the glass substrate upward at a constant speed of 4 cm / min to transfer the polystyrene microsphere film to the glass substrate;

[0038] (6) After step (5) is completed, the glass substrate with the polystyrene microsphere film is heated at 120°C for 20 min to melt the polystyrene microspheres slightly and make them more firmly bonded to the glass substrate;

[0039] (7) After step (6) is completed, the glass substrate is immersed in a glass etching solution, wherein the mass concentration of hydrofluoric acid in the glass etching solution is 4%, and the immersion time is 1 min; the glass etching solution selectively etches the glass substrate through the gaps between the polystyrene microspheres. After etching, the gaps between the polystyrene microspheres form etching grooves 2, and the glass covered by the polystyrene microspheres is not etched;

[0040] (8) After step (7) is completed, the hydrofluoric acid on the surface of the glass substrate is cleaned with deionized water, and then ultrasonically cleaned in toluene solvent for 15 minutes to remove the polystyrene microsphere film on the surface of the glass substrate to obtain anti-glare glass.

[0041] The performance indicators of the anti-glare glass were tested, and the glossiness was tested with a gloss meter and the haze was tested with a haze meter. The glossiness of the anti-glare glass prepared in this embodiment was 61 at 60° and the haze was 13.9%.

[0042] Figure 1 It is a schematic cross-sectional view of the anti-glare glass prepared by the present invention, comprising a glass substrate 1 on which an etched groove 2 is formed. The depth of the etched groove 2 can be controlled by regulating the concentration of hydrofluoric acid in the etching solution and the etching time.

[0043] Figure 2 This is a SEM image of the etched surface of the anti-glare glass prepared in this embodiment at 5000 times magnification. It can be clearly seen that the etched surface of the glass contains a plurality of regularly arranged circular glass surfaces. The circular glass surfaces were originally covered with polystyrene microspheres. During the etching process of the glass etching solution, the gaps between the polystyrene microspheres were etched to form etched grooves, and the glass surface covered with the polystyrene microspheres was not etched. After subsequent toluene cleaning to remove the polystyrene microsphere mask, a uniformly sized and regularly arranged circular glass surface (not etched) and etched grooves sandwiched between the circular glass surfaces were left on the etched surface of the glass. The etched grooves are recessed relative to the circular glass surface toward the inside of the glass, thereby forming a microscopic rough structure on the glass surface, giving the glass an anti-glare effect. In addition, Figure 2 It can also be seen that the diameter of the circular glass surface is approximately 0.8 μm, which is comparable to the particle size of polystyrene microspheres. Example 2

[0044] (1) After cleaning the glass substrate 1, place it in a plasma cleaning machine and clean it for 10 minutes to make the surface of the glass substrate hydrophilic;

[0045] (2) Disperse polystyrene microsphere powder with a particle size of 800 nm into a mixture of alcohol and deionized water (v:v=1:1) and perform ultrasonic oscillation for 20 s using a cell disruptor to form a polystyrene microsphere emulsion. The concentration of polystyrene microspheres in the polystyrene microsphere emulsion is 1 wt%;

[0046] (3) Add deionized water to a glass container and drop the polystyrene microsphere emulsion prepared in step (2) onto the glass substrate treated in step (1) at a drop size of 15 cm 2 2 mL of polystyrene microsphere emulsion was drop-coated on the surface of a glass substrate (single-sided area). The glass substrate was then slowly immersed in the deionized water in the aforementioned glass container. The polystyrene microsphere emulsion was evenly dispersed on the surface of the deionized water, forming a large film floating on the surface of the deionized water.

[0047] (4) After step (3) is completed, let it stand for 100 minutes, and then add a 2% by mass fraction of sodium dodecyl sulfate solution to the aforementioned glass container. According to the surface area of ​​the glass substrate (single-side area), 0.15 mL of sodium dodecyl sulfate solution is added per square centimeter of the glass substrate. After the addition of sodium dodecyl sulfate, the surface tension of the liquid surface can be changed. The liquid surface will suddenly spread outward from the point of incorporation, making the polystyrene microspheres more densely arranged on the liquid surface.

[0048] (5) After step (4) is completed, wait until the liquid level in the glass container stabilizes (which takes about 10 to 20 minutes), and then pull the glass substrate upward at a constant speed of 10 cm / min to transfer the polystyrene microsphere film to the glass substrate;

[0049] (6) After step (5) is completed, the glass substrate with the polystyrene microsphere film is heated at 130°C for 10 min to melt the polystyrene microspheres slightly and make them more firmly bonded to the glass substrate;

[0050] (7) After step (6) is completed, the glass substrate is immersed in a glass etching solution, wherein the mass concentration of hydrofluoric acid in the glass etching solution is 3%, and the immersion time is 0.5 min; the glass etching solution selectively etches the glass substrate through the gaps between the polystyrene microspheres. After etching, the gaps between the polystyrene microspheres form etching grooves 2, and the glass covered by the polystyrene microspheres is not etched;

[0051] (8) After step (7) is completed, the hydrofluoric acid on the surface of the glass substrate is cleaned with deionized water, and then ultrasonically cleaned in toluene solvent for 10 minutes to remove the polystyrene microsphere film on the surface of the glass substrate to obtain anti-glare glass.

[0052] The performance indicators of the anti-glare glass were tested, and the glossiness was tested with a gloss meter and the haze was tested with a haze meter. The glossiness of the anti-glare glass prepared in this embodiment was 79.2 and the haze was 5.3% at 60°. Example 3

[0053] (1) After cleaning the glass substrate 1, place it in a plasma cleaning machine and clean it for 30 minutes to make the surface of the glass substrate hydrophilic;

[0054] (2) Disperse polystyrene microsphere powder with a particle size of 800 nm into a mixture of alcohol and deionized water (v:v=1:1) and perform ultrasonic oscillation for 60 s using a cell disruptor to form a polystyrene microsphere emulsion. The concentration of polystyrene microspheres in the polystyrene microsphere emulsion is 1 wt%;

[0055] (3) Add deionized water to a glass container and drop the polystyrene microsphere emulsion prepared in step (2) onto the glass substrate treated in step (1) at a drop size of 15 cm 2 2 mL of polystyrene microsphere emulsion was drop-coated on the surface of a glass substrate (single-sided area). The glass substrate was then slowly immersed in the deionized water in the aforementioned glass container. The polystyrene microsphere emulsion was evenly dispersed on the surface of the deionized water, forming a large film floating on the surface of the deionized water.

[0056] (4) After step (3) is completed, let it stand for 30 minutes, and then add a 2% by mass fraction of sodium dodecyl sulfate solution to the aforementioned glass container. According to the surface area of ​​the glass substrate (single-side area), 0.15 mL of sodium dodecyl sulfate solution is added per square centimeter of the glass substrate. After the addition of sodium dodecyl sulfate, the surface tension of the liquid surface can be changed. The liquid surface will suddenly spread outward from the point of incorporation, making the polystyrene microspheres more densely arranged on the liquid surface.

[0057] (5) After step (4) is completed, wait until the liquid level in the glass container stabilizes (which takes about 10 to 20 minutes), and then pull the glass substrate upward at a constant speed of 10 cm / min to transfer the polystyrene microsphere film to the glass substrate;

[0058] (6) After step (5) is completed, the glass substrate with the polystyrene microsphere film is heated at 110°C for 30 min to melt the polystyrene microspheres slightly and make them more firmly bonded to the glass substrate;

[0059] (7) After step (6) is completed, the glass substrate is immersed in a glass etching solution, wherein the mass concentration of hydrofluoric acid in the glass etching solution is 6%, and the immersion time is 2 min; the glass etching solution selectively etches the glass substrate through the gaps between the polystyrene microspheres. After etching, the gaps between the polystyrene microspheres form etching grooves 2, and the glass covered by the polystyrene microspheres is not etched;

[0060] (8) After step (7) is completed, the hydrofluoric acid on the surface of the glass substrate is cleaned with deionized water, and then ultrasonically cleaned in toluene solvent for 20 minutes to remove the polystyrene microsphere film on the surface of the glass substrate to obtain anti-glare glass.

[0061] The performance indicators of the anti-glare glass were tested, and the glossiness was tested with a gloss meter and the haze was tested with a haze meter. The glossiness of the anti-glare glass prepared in this embodiment was 50.3 and the haze was 19.8% at 60°. Example 4

[0062] (1) After cleaning the glass substrate 1, place it in a plasma cleaning machine and clean it for 30 minutes to make the surface of the glass substrate hydrophilic;

[0063] (2) Disperse polystyrene microsphere powder with a particle size of 800 nm into a mixture of alcohol and deionized water (v:v=1:1) and perform ultrasonic oscillation for 40 s using a cell disruptor to form a polystyrene microsphere emulsion. The concentration of polystyrene microspheres in the polystyrene microsphere emulsion is 1 wt%;

[0064] (3) Add deionized water to a glass container and drop the polystyrene microsphere emulsion prepared in step (2) onto the glass substrate treated in step (1) at a drop size of 15 cm 2 2 mL of polystyrene microsphere emulsion was drop-coated on the surface of a glass substrate (single-sided area). The glass substrate was then slowly immersed in the deionized water in the aforementioned glass container. The polystyrene microsphere emulsion was evenly dispersed on the surface of the deionized water, forming a large film floating on the surface of the deionized water.

[0065] (4) After step (3) is completed, let it stand for 40 minutes, and then add a 2% by mass fraction of sodium dodecyl sulfate solution to the aforementioned glass container. According to the surface area of ​​the glass substrate (single-side area), 0.15 mL of sodium dodecyl sulfate solution is added per square centimeter of the glass substrate. After the addition of sodium dodecyl sulfate, the surface tension of the liquid surface can be changed. The liquid surface will suddenly spread outward from the point of incorporation, making the polystyrene microspheres more densely arranged on the liquid surface.

[0066] (5) After step (4) is completed, wait until the liquid level in the glass container stabilizes (which takes about 10 to 20 minutes), and then pull the glass substrate upward at a constant speed of 3 cm / min to transfer the polystyrene microsphere film to the glass substrate;

[0067] (6) After step (5) is completed, the glass substrate with the polystyrene microsphere film is heated at 120°C for 20 min to melt the polystyrene microspheres slightly and make them more firmly bonded to the glass substrate;

[0068] (7) After step (6) is completed, the glass substrate is immersed in a glass etching solution, wherein the mass concentration of hydrofluoric acid in the glass etching solution is 5%, and the immersion time is 1.5 min; the glass etching solution selectively etches the glass substrate through the gaps between the polystyrene microspheres. After etching, the gaps between the polystyrene microspheres form etching grooves 2, and the glass covered by the polystyrene microspheres is not etched;

[0069] (8) After step (7) is completed, the hydrofluoric acid on the surface of the glass substrate is cleaned with deionized water, and then ultrasonically cleaned in toluene solvent for 10 minutes to remove the polystyrene microsphere film on the surface of the glass substrate to obtain anti-glare glass.

[0070] The performance indicators of the anti-glare glass were tested, and the glossiness was tested with a gloss meter and the haze was tested with a haze meter. The glossiness of the anti-glare glass prepared in this embodiment was 59.1 and the haze was 17.8% at 60°.

[0071] The above description is merely an embodiment of the present invention and does not constitute any form of limitation to the present invention. The present invention may also have other forms of embodiments based on the above structures and functions, which are not listed here one by one. Therefore, any simple modification, equivalent changes, and modifications made to the above embodiments by any person skilled in the art in accordance with the technical essence of the present invention without departing from the scope of the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A method for preparing anti-glare glass, characterized in that: The following steps are involved: (1) After cleaning the glass substrate, place it in a plasma cleaning machine to make the surface of the glass substrate hydrophilic; (2) Dispersing polystyrene microsphere powder with a particle size of 800 nm into a mixture of alcohol and deionized water, and performing ultrasonic oscillation using a cell disruptor to obtain a polystyrene microsphere emulsion; the mass concentration of the polystyrene microspheres in the polystyrene microsphere emulsion is 1%; (3) Add deionized water to a glass container and drop the polystyrene microsphere emulsion prepared in step (2) onto the glass substrate treated in step (1) at a rate of 15 cm. 2 2 mL of polystyrene microsphere emulsion was drop-coated on the surface of a glass substrate, and then the glass substrate was slowly immersed in the deionized water in the glass container. The polystyrene microsphere emulsion was evenly spread on the surface of the deionized water, forming a large-area film floating on the surface of the deionized water; (4) After step (3) is completed, let it stand for 30 to 100 minutes, then add sodium dodecyl sulfate solution dropwise to the glass container, adding 0.15 mL of sodium dodecyl sulfate solution per square centimeter of glass substrate; (5) After step (4) is completed, the mixture is allowed to stand for a while until the liquid level in the glass container stabilizes, and then the glass substrate is pulled upward at a constant speed to transfer the polystyrene microsphere film to the glass substrate; (6) After step (5) is completed, the glass substrate with the polystyrene microsphere film is heated at 110-130°C; (7) After step (6) is completed, the glass substrate is immersed in an etching solution. The etching solution selectively etches the glass substrate through the gaps between the polystyrene microspheres, and the glass covered by the polystyrene microspheres is not etched; (8) After step (7) is completed, the glass substrate is cleaned with deionized water and then ultrasonically cleaned in toluene solvent to remove the polystyrene microsphere film on the surface of the glass substrate to obtain an anti-glare glass, the etching surface of which includes a plurality of regularly arranged circular glass surfaces and etching grooves sandwiched between the circular glass surfaces. The diameter of the circular glass surface is 0.8 μm. The glossiness of the anti-glare glass is adjustable between 50 and 80, and the haze is adjustable between 5 and 20%.

2. The method for preparing anti-glare glass according to claim 1, wherein: In step (1), the glass substrate is cleaned in the plasma cleaning machine for 10 to 30 minutes.

3. The method for preparing anti-glare glass according to claim 1, wherein: In step (2), the volume ratio of alcohol to deionized water in the mixed solution is 1:

1.

4. The method for preparing anti-glare glass according to claim 1 or 3, wherein: In step (2), the ultrasonic oscillation time is 20 to 60 s.

5. The method for preparing anti-glare glass according to claim 1, wherein: In step (4), the mass fraction of the sodium lauryl sulfate solution is 2%.

6. The method for preparing anti-glare glass according to claim 1, wherein: In step (6), the heating time is 10 to 30 minutes.

7. The method for preparing anti-glare glass according to claim 1, wherein: The mass concentration of hydrofluoric acid in the etching solution of step (7) is 3-6%, and the immersion time is 0.5-2 min.

8. The method for preparing anti-glare glass according to claim 1 or 7, wherein: By adjusting the concentration of hydrofluoric acid in the etching solution and the etching time, anti-glare glass with different glossiness and haze can be obtained.

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