Frosted glass and preparation method thereof, and glass product

Abstract

The present application relates to a frosted glass and a preparation method thereof, and a glass product. In terms of mass percentage, the oxide components of the frosted glass include: 48% to 65% SiO2, 16% to 23% Al2O3, 4% to 8% Li2O, 2% to 9% Na2O, 0% to 3% K2O, 0.5% to 6% MgO, 2% to 6% B2O3, 0.01% to 4% P2O5, 2% to 5% ZrO2, 0% to 4% ZnO; wherein k = mass of R2O / total mass of MO, R2O includes Li2O, Na2O and K2O, MO includes ZrO2, ZnO and B2O3, and k < 2.

Description

Technical Field

[0001] The present application relates to the technical field of glass production, and in particular to frosted glass and a preparation method thereof, and glass products. Background Art

[0002] Frosted glass is a kind of anti-glare glass. With its excellent light transmittance, visibility, heat insulation, sound insulation, environmental protection and other irreplaceable properties that other materials cannot replace, frosted glass has been widely used in the decoration field, adding vitality to space decoration and is loved by people.

[0003] In traditional technology, there are three commonly used processes for anti-glare glass, namely sandblasting, coating and chemical frosting. Among them, the glass surface roughness formed by the sandblasting process is relatively large, and it is difficult to form a fine and uniform frosted surface. The surface hardness of the coating process is low and it is easy to scratch. Its anti-glare effect will gradually fail during use. The chemical etching process can obtain a fine and uniform frosted surface. At the same time, the surface frosting is not easy to scratch and has a long service life. It is the most commonly used process in anti-glare glass. At present, chemically etched anti-glare glass is mainly formed by frosting the glass with polishing liquids such as frosting powder or hydrofluoric acid (HF), but HF is highly dangerous and harmful to the human body. It is not suitable for large-scale use. Frosting powder is expensive, and there are many processes for frosting liquid and polishing liquid. The waste liquid treatment is troublesome, which increases the difficulty of preparing frosted glass.

[0004] Therefore, the traditional technology still needs to be improved. Summary of the invention

[0005] Based on this, it is necessary to provide a frosted glass and a preparation method thereof, and a glass product, aiming to improve the preparation convenience and anti-glare uniformity of the frosted glass.

[0006] This application is implemented through the following technical solutions:

[0007] One aspect of the present application provides a frosted glass, wherein the oxide components of the frosted glass include, by mass percentage:

[0008] 48% to 65% SiO2, 16% to 23% Al2O3, 4% to 8% Li2O, 2% to 9% Na2O, 0 to 3% K2O, 1% to 6% MgO, 2% to 6% B2O3, 0.01% to 4% P2O5, 2% to 5% ZrO2, 0 to 4% ZnO; wherein, k = mass of R2O / total mass of MO, R2O includes Li2O, Na2O and K2O, MO includes ZrO2, ZnO and B2O3, and k < 2.

[0009] In some embodiments, the oxide components of the frosted glass include, by mass percentage:

[0010] 53%~65% SiO2, 16%~22% Al2O3, 4%~7.5% Li2O, 2%~6% Na2O, 0~2% K2O, 0.5%~3.5% MgO, 2.8%~5% B2O3, 1%~2.5% P2O5, 2.5%~4.8% ZrO2, 1%~2.5% ZnO.

[0011] In some of these embodiments, 0.6<k<2.

[0012] On the other hand, the present application also provides a method for preparing frosted glass, comprising the following steps:

[0013] Mixing the oxide components of the frosted glass as described above to prepare a mixture;

[0014] The mixture is sequentially subjected to melting treatment, forming treatment, annealing treatment and tempering treatment.

[0015] In some embodiments, the melt processing step satisfies at least one of the conditions (a) to (b):

[0016] (a) the temperature of the melt treatment is 1600° C. to 1700° C.;

[0017] (b) The melting treatment time is 5h to 8h.

[0018] In some embodiments, the tempering treatment is performed in a tempering salt, and the tempering salt includes at least one of lithium nitrate, potassium nitrate and sodium nitrate.

[0019] In some embodiments, based on the total mass of the tempering salt, the tempering salt includes lithium nitrate, and the content of the lithium nitrate is ≥ 1wt%.

[0020] In some embodiments, the tempering treatment is performed at a temperature of 380° C. to 440° C. for a time of 2 h to 8 h.

[0021] In some embodiments, the annealing step comprises the following steps:

[0022] The product after the molding treatment is kept at the glass transition temperature Tg+30°C for 1h to 3h, cooled to the glass strain point temperature Tst at a cooling rate of 0.5°C / min to 2°C / min, and cooled to room temperature in the furnace.

[0023] The frosted glass of the present application includes oxide components of specific types and proportions, wherein the ratio K of the mass of the specific alkali metal oxide R2O to the total mass of ZrO2, ZnO, and B2O3 is controlled to be less than 2. The components are coordinated and cooperated through a specific ratio relationship so that elements such as Zn, B, and Zr in the glass structure have multiple coordination numbers, thereby ensuring a sufficient amount of free oxygen, enhancing the ion exchange capacity of the glass raw materials during the preparation process, and making the ion exchange rate at each location tend to be consistent, thereby improving the uniformity of the frosting of the glass and obtaining a uniform anti-glare effect.

[0024] Furthermore, the frosted glass can obtain a uniform anti-glare effect by adjusting the oxide composition of the glass. Even without additional frosting treatment and without adding additional frosting aids during the preparation process, a uniform anti-glare effect can be obtained. The preparation process is simple, and the preparation convenience is improved.

[0025] The present application also provides a glass product, which includes the frosted glass or frosted glass produced by the above-mentioned frosted glass preparation method. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a physical comparison diagram of the frosted glass prepared in Example 4, Comparative Example 1 and Comparative Example 11 of the present application. DETAILED DESCRIPTION

[0027] For ease of understanding of the present application, the present application will be described more fully below, and preferred embodiments of the present application are provided. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0029] The term "comprises", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements defined by the sentence "comprising one..." do not exclude the presence of other identical elements in the process, method, article or equipment including the elements. The indefinite articles "a kind of" and "one" before the elements or components of the present application are not restrictive to the quantity requirements (i.e., the number of occurrences) of the elements or components. Therefore, "one" or "a kind of" should be interpreted as including one or at least one, and the elements or components in the singular form also include the plural form, unless the number obviously refers only to the singular form. The meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In the present application, when it comes to numerical intervals (i.e., numerical ranges), unless otherwise specified, the optional numerical distribution is considered continuous within the above numerical interval, and includes the two numerical endpoints (i.e., the minimum and maximum values) of the numerical range, and each numerical value between the two numerical endpoints. Unless otherwise specified, when the numerical interval only refers to the integers within the numerical interval, it includes the two endpoint integers of the numerical range, and each integer between the two endpoints. In this article, it is equivalent to directly listing each integer, such as t is an integer selected from 1-10, indicating that t is any integer selected from the integer group consisting of 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10. In addition, when multiple ranges are provided to describe features or characteristics, these ranges can be combined. In other words, unless otherwise specified, the ranges disclosed herein should be understood to include any and all sub-ranges included therein.

[0031] The temperature parameters in this application, unless otherwise specified, are allowed to be either constant temperature treatment or to vary within a certain temperature range. It should be understood that the constant temperature treatment allows the temperature to fluctuate within the accuracy range controlled by the instrument. Fluctuations within the range of ±5°C, ±4°C, ±3°C, ±2°C, and ±1°C are allowed.

[0032] An embodiment of the present application provides a frosted glass, wherein the oxide components of the frosted glass include, by mass percentage:

[0033] 48% to 65% SiO2, 16% to 23% Al2O3, 4% to 8% Li2O, 2% to 9% Na2O, 0 to 3% K2O, 0.5% to 6% MgO, 2% to 6% B2O3, 0.01% to 4% P2O5, 2% to 5% ZrO2, 0 to 4% ZnO; wherein, k = mass of R2O / total mass of MO, R2O includes Li2O, Na2O and K2O, MO includes ZrO2, ZnO and B2O3, and k < 2.

[0034] It is understood that when a numerical range is disclosed herein, the above range is considered continuous and includes the minimum and maximum values ​​of the range, as well as every value between such minimum and maximum values. Further, when a range refers to an integer, every integer between the minimum and maximum values ​​of the range is included. In addition, when multiple ranges are provided to describe features or characteristics, the ranges can be combined. In other words, unless otherwise indicated, all ranges disclosed herein should be understood to include any and all subranges included therein.

[0035] It should be noted that the value range of SiO2 is "48% to 65%", which means that the minimum and maximum values ​​in the range of 48% to 65% can be taken, as well as every value between the minimum and maximum values. Specific examples include, but are not limited to, the point values ​​in the embodiments and the following point values: 48%, 48.1%, 48.2%, 48.3%, 48.4%, 48.5%, 48.6%, 48.7%, 48.8%, 48.9%, 49%, 49.1%, 49.2%, 49.3%, 49.4%, 49.5%, 49.6%, 49.7%, 49.8%, 49.9%, 50%, 50.1%, 50.2%, 50.3%, 50.4%, 50.5%, 50.6%, 50.7%, 50.8%, 50.9%, 51%, 51.1%, 51.2%, 51.3%, 51.4%, 51.5%, 51.6%, 51.7%, 51.8%, 51.9%, 52.1%, 52.2%, 52.3%, 52.4%, 52.5%, 52.6%, 52.7%, 52.8%, 52.9%, 53. 1.6%, 51.7%, 51.8%, 51.9%, 52%, 52.1%, 52.2%, 52.3%, 52.4%, 52.5%, 52.6%, 52.7%, 52.8%, 52.9%, 53%, 53.1%, 53.2%, 53.3%, 53.4%, 53.5%, 53.6%, 53.7%, 53.8%, 53.9%, 54%, 54.1%, 54.2%, 54.3%, 54.4%, 54.5%, 54.6%, 54.7%, 54.8%, 54.9%, 55%, 55.1%, 55.2%, 55.3%, 55.4%, 55.5%, 55.6%, 55.7%, 55.8%, 55.9%, 56. 5.6%, 55.7%, 55.8%, 55.9%, 56%, 56.1%, 56.2%, 56.3%, 56.4%, 56.5%, 56.7%, 56.8%, 56.9%, 57%, 57.1%, 57.2%, 57.3%, 57.4%, 57.5%, 57.6%, 57.7%, 57.8%, 57.9%, 58%, 58.1%, 58.2%, 58.3%, 58.4%, 58.5%, 58.6%, 58.7%, 58.8%, 58.9%, 59%, 59.1%, 59.2%, 59.3%, 59.4%, 59.5%, 59.6%, 59 .7%, 59.8%, 59.9%, 60%, 60.1%, 60.2%, 60.3%, 60.4%, 60.5%, 60.6%, 60.7%, 60.8%, 60.9%, 61%, 61.1%, 61.2%, 61.3%, 61.4%, 61.5%, 61.6%, 61.7%, 61.8%, 61.9%, 62%, 62.1%, 62.2%, 62.3%, 62.4%, 62.5%, 62.6%, 62.7%, 62.8%, 62.9%, 63%, 63.1%, 63.2%, 63.3%, 63.4%, 63.5%, 63.6%, 63.7%, 63.8%, 63.9%, 64%, 64.1%, 64.2%, 64.3%, 64.4%, 64.5%, 64.6%, 64.7%, 64.8%, 64.9% or 65%; or a range consisting of any two of these values, including, for example, 60% to 65%. .

[0036] The value range of Al2O3 is "16% to 23%", which means that it can take the minimum and maximum values ​​in the range of 16% to 23%, as well as every value between the minimum and maximum values. Specific examples include, but are not limited to, 16%, 16.1%, 16.2%, 16.3%, 16.4%, 16.5%, 16.6%, 16.7%, 16.8%, 16.9%, 17%, 17.1%, 17.2%, 17.3%, 17.4%, 17.5%, 17.6%, 17.7%, 17.8%, 17.9%, 18%, 18.1%, 18.2%, 18.3%, 18.4%, 18.5%, 18.6%, 18.8%, 18.9%, 19%, 19.1%, 19.2%, 19.3%, 19.4%, 19.5%, 19.6%, 19.7% %, 19.8%, 19.9%, 20%, 20.1%, 20.2%, 20.3%, 20.4%, 20.5%, 20.6%, 20.7%, 20.8%, 20.9%, 21%, 21.1%, 21.2%, 21.3%, 21.4%, 21.5%, 21.6%, 21.7%, 21.8%, 21.9%, 22%, 22.1%, 22.2%, 22.3%, 22.4%, 22.5%, 22.6%, 22.7%, 22.8%, 22.9% or 23%, or a range consisting of any two of these values, as an example, includes: 16% to 20%.

[0037] The value range of Li2O is "4% to 8%", which means that it can take the minimum value and the maximum value of the range of 4% to 8%, and every value between the minimum value and the maximum value. Specific examples include, but are not limited to, 4%, 4.1%, 4.2%, 4.3%, 4.4%, 4.5%, 4.6%, 4.7%, 4.8%, 4.9%, 5%, 5.1%, 5.2%, 5.3%, 5.4%, 5.5%, 5.6%, 5.7%, 5.8%, 5.9%, 6%, 6.1%, 6.2%, 6.3%, 6.4%, 6.5%, 6.6%, 6.7%, 6.8%, 6.9%, 7%, 7.1%, 7.2%, 7.3%, 7.4%, 7.5%, 7.6%, 7.7%, 7.8%, 7.9% or 8%, or a range consisting of any two of these values, including, by way of example, 4% to 6%.

[0038] The value range of Na2O is "2% to 9%", which means the minimum and maximum values ​​in the range of 2% to 9%, as well as every value between the minimum and maximum values. Specific examples include but are not limited to 2%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9%, 4%, 4.1%, 4.2%, 4.3%, 4.4%, 4.5%, 4.6%, 4.7%, 4.8%, 4.9%, 5%, 5.1%, 5.2%, 5.3%, 5.4%, 5.5%, 5.6%, 5.7%, 5.8%, 5.9%, 6%, 6.1%, 6.2%, 6.3%, 6.4%, 6.5%, 6.6%, 6.7%, 6.8%, 6.9%, 7%, 7.1%, 7.2%, 7.3%, 7.4%, 7.5%, 7.6%, 7.7%, 7.8%, 7.9%, 8%, 8.1%, 8.2%, 8.3%, 8.4%, 8.5%, 8.6%, 8.8%, 8.9% or 9%, or a range consisting of any two of these values, as examples, include: 4% to 5%.

[0039] The value range of K2O is "0-3%", which means the minimum and maximum values ​​in the range of 0-3%, and every value between the minimum and maximum values. Specific examples include, but are not limited to, 0, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9% or 3%, or a range consisting of any two of these values, including, by way of example, 1% to 2%.

[0040] The value range of MgO is "0.5% to 6%", which means the minimum and maximum values ​​in the range of 0.5% to 6%, as well as every value between the minimum and maximum values. Specific examples include but are not limited to 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9%, 4%, 4.1%, 4.2%, 4.3%, 4.4%, 4.5%, 4.6%, 4.7%, 4.8%, 4.9%, 5%, 5.1%, 5.2%, 5.3%, 5.4%, 5.5%, 5.6%, 5.7%, 5.8%, 5.9% or 6%, or a range consisting of any two of these values, as examples, include: 1% to 4%.

[0041] The value range of B2O3 is "2% to 6%", which means that it can take the minimum and maximum values ​​in the range of 2% to 6%, as well as every value between the minimum and maximum values. Specific examples include, but are not limited to, 2%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9%, 4%, 4.1%, 4.2%, 4.3%, 4.4%, 4.5%, 4.6%, 4.7%, 4.8%, 4.9%, 5%, 5.1%, 5.2%, 5.3%, 5.4%, 5.5%, 5.6%, 5.7%, 5.8%, 5.9% or 6%, or a range consisting of any two of these values, including, by way of example, 2% to 4%.

[0042] The value range of P2O5 is "0.01% to 4%", which means the minimum and maximum values ​​in the range of 0.01% to 4%, as well as every value between the minimum and maximum values. Specific examples include but are not limited to 0.01%, 0.02%, 0.03%, 0.04%, 0.05%, 0.06%, 0.07%, 0.08%, 0.09%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2.0%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3.0%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9%, 4.1%, 4.2%, 4.3%, 4.4%, 4.5%, 4.6%, 4.7%, 4.8%, 4.9%, 5.1%, 5.2%, 5.3%, 5.4%, 5.5%, 5.6%, 5.7%, 5.8%, 5.9%, 6. .7%, 1.8%, 1.9%, 2%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9% or 4%, or a range consisting of any two of these values, as examples, include: 1% to 3%.

[0043] The value range of ZrO2 is "2% to 5%", which means the minimum and maximum values ​​of the range of 2% to 5%, and every value between the minimum and maximum values. Specific examples include but are not limited to 2%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9%, 4%, 4.1%, 4.2%, 4.3%, 4.4%, 4.5%, 4.6%, 4.7%, 4.8%, 4.9% or 5%, or a range consisting of any two of these values, as an example, including: 3% to 5%.

[0044] The value range of ZnO is "0 to 4%", that is, it can take the minimum value and the maximum value of the range of 0 to 4%, and every value between the minimum value and the maximum value. Specific examples include, but are not limited to, 0, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9% or 4%, or a range consisting of any two of these values, including, by way of example, 1% to 3%.

[0045] The above-mentioned frosted glass includes oxide components of specific types and proportions, wherein the ratio K of the mass of the specific alkali metal oxide R2O to the total mass of ZrO2, ZnO, and B2O3 is controlled to be less than 2. The components are coordinated and cooperated through a specific ratio relationship, so that elements such as Zn, B, and Zr in the glass structure have multiple coordination numbers, the amount of free oxygen is sufficient, the ion exchange capacity of the glass raw materials during the preparation process is enhanced, and the ion exchange rate at each location is made consistent, thereby improving the uniformity of the frosting of the glass and obtaining a uniform anti-glare effect.

[0046] It can be understood that there are various coordination numbers of elements such as Zn, B, and Zr in the glass structure. When the amount of free oxygen is sufficient, these elements are tetrahedral coordinated, such as [ZnO4], [BO4], etc.; when the amount of free oxygen is insufficient, these elements are octahedral coordinated, such as [ZnO6], [BO6], etc. When these elements exist in tetrahedral coordination, they can effectively expand the ion exchange channel, enhance the ion exchange capacity, and make the ion exchange rate everywhere tend to be consistent, thereby improving the frosting uniformity of the glass and obtaining a uniform anti-glare effect. When these elements exist in octahedral coordination, they fill the structural gaps, resulting in a dense glass structure, a significant decrease in ion exchange capacity, and a reduction in the frosting uniformity of the glass.

[0047] In some embodiments, the oxide components of the frosted glass include, by mass percentage:

[0048] 53%~65% SiO2, 16%~22% Al2O3, 4%~7.5% Li2O, 2%~6% Na2O, 0~2% K2O, 0.5%~3.5% MgO, 2.8%~5% B2O3, 1%~2.5% P2O5, 2.5%~4.8% ZrO2, 1%~2.5% ZnO.

[0049] In some embodiments, the oxide components of the frosted glass include, by mass percentage:

[0050] 53%~65% SiO2, 16%~19% Al2O3, 4%~5% Li2O, 2%~6% Na2O, 0.01%~1% K2O, 0.5%~3.5% MgO, 2.8%~5% B2O3, 1%~1.5% P2O5, 2.5%~4.8% ZrO2, 1%~2.5% ZnO.

[0051] The components of the above-mentioned frosted glass are coordinated and cooperated in a specific ratio, so that elements such as Zn, B, Zr in the glass structure have multiple coordination numbers, the amount of free oxygen is sufficient, the ion exchange capacity of the glass raw materials during the preparation process is enhanced, and the ion exchange rate at each location tends to be consistent, so that the prepared frosted glass has better other properties such as light transmittance and lower surface roughness on the basis of good frosting uniformity.

[0052] In a specific example, the oxide components of the frosted glass include, by mass percentage:

[0053] 64.5% SiO2, 16.4% Al2O3, 4% Li2O, 6% Na2O, 1% K2O, 1.3% MgO, 2.8% B2O3, 1% P2O5, 2% ZrO2, 1% ZnO.

[0054] In some of these embodiments, 0.6<k<2.

[0055] The value range of k is "0.6-2", that is, the minimum and maximum values ​​in the range of 0.6-2, and every value between the minimum and maximum values. Specific examples include but are not limited to 0.6, 0.61, 0.62, 0.63, 0.64, 0.65, 0.66, 0.67, 0.68, 0.69, 0.7, 0.71, 0.72, 0.73, 0.74, 0.75, 0.76, 0.77, 0.78, 0.79, 0.8, 0.81, 0.82, 0.83, 0.84, 0.85, 0.86, 0.87, 0.88, 0.89, 0.9, 0.91, 0.92, 0.93, 0.94, 0.95、0.96、0.97、0.98、0.99、1.0、1.01、1.02、1.03、1.04、1.05、1.06、1.07、1.08、1.09、1.1、1.11、1.12、1.13、1.14、1.15、1.16、1.17、1.18、1.19、1.2、1.21、1.22、1.23、1.24、1.25、1.26、1.27、1.28、1.29、1.3、1.31、1 .32, 1.33, 1.34, 1.35, 1.36, 1.37, 1.38, 1.39, 1.4, 1.41, 1.42, 1.43, 1.44, 1.45, 1.46, 1.47, 1.18, 1.49, 1.5, 1.51, 1.52, 1.53, 1.54, 1.55, 1.56, 1.57, 1.58, 1.59, 1.6, 1.61, 1.62, 1.63, 1.64, 1.65, 1.66, 1.67, 1.68, 1 .69, 1.7, 1.71, 1.72, 1.73, 1.74, 1.75, 1.76, 1.78, 1.79, 1.8, 1.81, 1.82, 1.83, 1.84, 1.85, 1.86, 1.87, 1.88, 1.89, 1.9, 1.91, 1.92, 1.93, 1.94, 1.95, 1.96, 1.97, 1.98, 1.99, or 2, or a range consisting of any two of these values, as an example, includes: 0.6 to 1.2.

[0056] An embodiment of the present application further provides a method for preparing frosted glass, comprising the following steps S10 to S20.

[0057] S10, mixing the oxide components of the frosted glass to prepare a mixture.

[0058] S20, subjecting the mixture to melting treatment, forming treatment, annealing treatment and tempering treatment in sequence to prepare frosted glass.

[0059] In some of the embodiments, the temperature of the melt treatment is 1600°C to 1700°C.

[0060] In some of the embodiments, the melting treatment time is 5 h to 8 h.

[0061] In some embodiments, the tempering treatment is performed in a tempering salt, and the tempering salt includes at least one of lithium nitrate, potassium nitrate and sodium nitrate.

[0062] In some embodiments, the tempering salt includes lithium nitrate, potassium nitrate and sodium nitrate, and the content of lithium nitrate is ≥1wt% based on the total mass of the tempering salt.

[0063] In some embodiments, the temperature of the tempering treatment is 380° C. to 440° C., and the time is 2 h to 8 h.

[0064] In some embodiments, the annealing step includes the following steps: keeping the formed product at a glass transition temperature Tg+30°C for 1h to 3h, cooling it to the glass strain point temperature Tst at a cooling rate of 0.5°C / min to 2°C / min, and cooling it to room temperature in the furnace.

[0065] The glass transition temperature (Tg) refers to the temperature corresponding to the transition from the glass state to the highly elastic state; the glass strain point temperature refers to the temperature at which the glass state transitions to the solid state. When the temperature is higher than the glass strain point, the glass will become fluid and will deform; room temperature refers to the ambient temperature at 25℃±1℃.

[0066] In the above-mentioned preparation method of frosted glass, a uniform anti-glare effect can be obtained by adjusting the oxide composition of the glass. Even without additional frosting treatment and without adding additional frosting aids during the preparation process, a uniform anti-glare effect can be obtained. The preparation process is simple, and the preparation convenience is improved.

[0067] One embodiment of the present application further provides a glass product, which includes the frosted glass or frosted glass produced by the above-mentioned frosted glass preparation method.

[0068] When the frosted glass and the preparation method thereof are used to prepare glass products, the obtained frosted glass has a uniform anti-glare effect and can meet the use requirements of glass products.

[0069] In order to make the purpose, technical solutions and advantages of the present application more concise and clear, the present application is described with the following specific embodiments, but the present application is by no means limited to these embodiments. The embodiments described below are only preferred embodiments of the present application and can be used to describe the present application, and cannot be understood as limiting the scope of the present application. It should be pointed out that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

[0070] The present application is further described below in conjunction with specific embodiments, but they should not be construed as limiting the scope of protection of the present application.

[0071] Example 1

[0072] (1) Raw materials: According to the glass component formula shown in Table 1, the required raw materials are accurately weighed and mixed uniformly to obtain a mixture.

[0073] (2) Melting: The mixture obtained in step (1) is placed in a platinum crucible and placed at 1650° C. for 6 h to melt and clarify.

[0074] (3) Molding: The molten and clarified glass liquid is cast into 175mm×100mm glass bricks.

[0075] (4) Annealing: The formed glass product is kept at the glass transition temperature Tg+30°C for 2 h, cooled to the glass strain point temperature Tst at a cooling rate of 1°C / min, and then cooled to room temperature in the furnace.

[0076] (5) Processing: Cut the glass products into 0.75 mm glass sheets using a sand wire cutter; grind and polish the glass to 0.6 mm using a planetary grinder and polisher, and magnify the glass surface to remove pitting.

[0077] (6) Tempering: The finely processed glass sheet is preheated at 300° C. for 20 min to obtain preheated glass, and the preheated glass is immersed in a tempering salt containing potassium nitrate, sodium nitrate and lithium nitrate for tempering treatment, wherein the mass ratio of potassium nitrate to sodium nitrate is 8:2, and lithium nitrate accounts for 3% of the total mass of the tempering salt. The tempering temperature of the tempering treatment is 405° C. and the tempering time is 4 h to obtain the tempered glass.

[0078] (7) The tempered glass is ultrasonically cleaned in dilute sulfuric acid with a concentration of 5% to 10% to obtain a glass sample.

[0079] (8) The physical and chemical properties of the prepared glass samples were tested. The following are the specific performance tests.

[0080] 1. The frosting uniformity of the glass samples prepared in the embodiments and comparative examples was distinguished, and specifically judged by an intuitive visual method. Generally, the uneven frosting can be distinguished by visual inspection.

[0081] 2. The transmittance of the glass samples obtained in the embodiments and comparative examples was tested, specifically according to "GB / T2680-2021 Determination of visible light transmittance, direct sunlight transmittance, total solar energy transmittance, ultraviolet transmittance and related window glass parameters of architectural glass", and the transmittance of the sample at a wavelength of 550nm was selected as the research object of this patent.

[0082] 3. The arithmetic average roughness (Ra) of the glass samples prepared in the embodiments and comparative examples was tested, specifically according to "GB / T 32642-2016 Method for measuring the surface roughness of flat panel display substrate glass".

[0083] 4. The haze of the glass samples prepared in the examples and comparative examples was tested according to GB / T2410-2008 Determination of light transmittance and haze of transparent plastics.

[0084] Please see Tables 1 to 4 for specific results.

[0085] Embodiments 2 to 8

[0086] Examples 2 to 8 are substantially the same as Example 1, the only difference being the raw material formulations in Table 1.

[0087] Other conditions and parameters are the same as those in Example 1. Please see Table 1 for specific test results.

[0088] Embodiments 9 to 16

[0089] Examples 9 to 16 are substantially the same as Example 1, except for the raw material formulations in Table 2.

[0090] Other conditions and parameters are the same as those in Example 1. Please see Table 2 for specific test results.

[0091] Comparative Examples 1 to 6

[0092] Comparative Examples 1 to 6 are substantially the same as Example 1, except that the raw material formulas of the glass in Comparative Examples 1 to 6 are as shown in Table 3.

[0093] Other conditions and parameters are the same as those in Example 1. Please see Table 3 for specific test results.

[0094] Comparative Examples 7 to 12

[0095] Comparative Examples 7 to 12 are substantially the same as Example 1, except that the raw material formulas of the glass in Comparative Examples 7 to 12 are as shown in Table 4.

[0096] Other conditions and parameters are the same as those in Example 1. Please see Table 4 for specific test results.

[0097] The raw material formulas of the glass in each embodiment and comparative example are shown in Tables 1 to 4.

[0098] Table 1

[0099]

[0100] Table 2

[0101]

[0102]

[0103] Table 3

[0104]

[0105] Table 4

[0106]

[0107] Figure 1 From left to right, A is the glass made in Example 4, B is the glass made in Comparative Example 1, and C is the glass made in Comparative Example 11. It can be seen that the glass made in Example 4 in A is evenly frosted, the glass made in Comparative Example 1 in B is unevenly frosted, and the glass made in Comparative Example 11 in C is smooth and has no frosting effect. And from the data in Tables 1 to 4, the tests of frosted glasses made in Examples 1 to 16 and Comparative Examples 1 to 12 show that the frosted glass made according to the technical solution of the present application has better frosting uniformity than the frosted glass made in the comparative example.

[0108] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0109] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A frosted glass, characterized in that: Measured by mass percentage, the oxide components of the frosted glass include: 48%~65% SiO2, 16%~23% Al2O3, 4%~8% Li2O, 2%~9% Na2O, 0~2% K2O, 0.5%~6% MgO, 2%~6%B2O3, 0.01%~4% P2O5, 2%~5% ZrO2, 0~4% ZnO; wherein, k=mass of R2O / total mass of MO, R2O includes Li2O, Na2O and K2O, MO includes ZrO2, ZnO and B2O3, and k<2; the frosted glass is obtained by tempering the glass with the above-mentioned glass oxide components in tempering salt.

2. The frosted glass according to claim 1, characterized in that: Measured by mass percentage, the oxide components of the frosted glass include: 53%~65% SiO2, 16%~22% Al2O3, 4%~7.5% Li2O, 2%~6% Na2O, 0~2% K2O, 0.5%~3.5% MgO, 2.8%~5% B2O3, 1%~2.5% P2O5, 2.5%~4.8% ZrO2, 1%~2.5% ZnO.

3. The frosted glass according to any one of claims 1 to 2, characterized in that: 0.6＜k＜2。 4. A method for preparing frosted glass, characterized in that: The steps include: Mixing the oxide components of the frosted glass according to any one of claims 1 to 3 to prepare a mixture; The mixture is sequentially subjected to melting treatment, forming treatment, annealing treatment and tempering treatment.

5. The method for preparing frosted glass according to claim 4, characterized in that: The melting step satisfies at least one of the conditions (a) to (b): (a) The temperature of the melt treatment is 1600°C to 1700°C; (b) The melting treatment time is 5 h to 8 h.

6. The method for preparing frosted glass according to any one of claims 4 to 5, characterized in that: The tempering treatment is carried out in a tempering salt, and the tempering salt includes at least one of lithium nitrate, potassium nitrate and sodium nitrate.

7. The method for preparing frosted glass according to claim 6, characterized in that: The tempering salt comprises lithium nitrate, potassium nitrate and sodium nitrate. Based on the total mass of the tempering salt, the content of the lithium nitrate is ≥1wt%.

8. The method for preparing frosted glass according to any one of claims 4 to 5, characterized in that: The temperature of the tempering treatment is 380° C. to 440° C., and the time is 2 h to 8 h.

9. The method for preparing frosted glass according to any one of claims 4 to 5, characterized in that: The annealing step comprises the following steps: The product after the molding treatment is kept at the glass transition temperature Tg+30°C for 1h~3h, cooled to the glass strain point temperature Tst at a cooling rate of 0.5°C / min~2°C / min, and cooled to room temperature in the furnace.

10. A glass product, characterized in that: The glass product comprises the frosted glass as described in any one of claims 1 to 3 or the frosted glass prepared by the method for preparing frosted glass as described in any one of claims 4 to 9.

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