Sodium-calcium glass frosting powder, frosted glass and its preparation method and application

Abstract

This application relates to the technical field of glass frosting treatment, in particular to a sodium-calcium glass frosting powder, a frosted glass, and their preparation methods and applications. It aims to solve the problem in related technologies that using inorganic acids and fluorinated salts with relatively strong acidity for frosting treatment of glass materials is not conducive to environmental protection and the health of operators. A sodium-calcium glass frosting powder includes: a fluorinated salt and sulfamic acid; wherein, the fluorinated salt includes at least one of ammonium bifluoride and ammonium fluoride; the weight portion of the fluorinated salt is 20 to 30 parts, and the weight portion of the sulfamic acid is 25 to 35 parts. This application is used to prepare frosted glass.

Description

Technical Field

[0001] This application relates to the technical field of glass frosting treatment, in particular to a soda-lime glass frosting powder, a frosted glass, and their preparation methods and applications. Background Art

[0002] With the development of the education industry, ordinary teaching blackboards have gradually been replaced by electronic blackboards. Compared with the traditional teaching method of using chalk to describe on the blackboard, electronic blackboards do not require the use of chalk, which is extremely helpful for the environment and the physical health of teachers.

[0003] The outermost layer of the electronic blackboard is made of glass material. Usually, on the premise of having a display function, this glass material also needs to have the functions of writing and anti-glare at the same time. This requires surface treatment of the glass material (such as frosting treatment) to make the originally smooth glass surface become a surface with a certain roughness, so as to improve the delicate touch and anti-glare function of the electronic blackboard during writing.

[0004] Currently, in order to make the glass material have a delicate touch during writing and a good anti-glare function, the roughness of the frosting treatment needs to reach more than 1.6 microns. That is, currently, the roughness requirement for AG glass is more than 1.6 microns. AG glass is also called anti-reflection glass or anti-glare glass. Simply put, it is to perform special processing on the glass surface so that it can resist reflection, eliminate the mirror effect, and even improve the anti-slip and scratch resistance of the glass, while retaining the original delicate touch of the glass. In order to achieve an AG product with a higher roughness, the current market practice is to use strong inorganic acids (such as sulfuric acid, hydrochloric acid, and nitric acid) and fluorinated salts as the main materials for frosting the glass material, but this process is prone to cause environmental pollution and is extremely harmful to the physical health of operators. Summary of the Invention

[0005] Based on this, this application provides a soda-lime glass frosting powder, a frosted glass, and their preparation methods and applications, which are used to solve the problem that in the related technology, using strong inorganic acids and fluorinated salts to perform frosting treatment on the glass material is not conducive to environmental protection and the physical health of operators.

[0006] In the first aspect, a soda-lime glass frosting powder is provided, including: fluorinated salt and sulfamic acid;

[0007] Wherein, the fluorinated salt includes: at least one of ammonium bifluoride and ammonium fluoride; the weight portion of the fluorinated salt is 20 - 30 parts, and the weight portion of the sulfamic acid is 25 - 35 parts.

[0008] Optionally, it further includes: zinc chloride;

[0009] The weight portion of the zinc chloride is 10 - 15 parts.

[0010] Optionally, it further includes: water-soluble potassium salt;

[0011] The weight portion of the water-soluble potassium salt is 2 to 5 parts.

[0012] Optionally, it further includes: thickening agent;

[0013] The weight portion of the thickening agent is 1 to 3 parts.

[0014] In a second aspect, a method for preparing frosted glass is provided, including:

[0015] Mixing the sodium-calcium glass frosting powder as described in the first aspect with water for aging to prepare a sodium-calcium glass frosting solution;

[0016] Using the sodium-calcium glass frosting solution to frost the sodium-calcium glass.

[0017] Optionally, during aging, the weight portion of the fluoride salt in the sodium-calcium glass frosting powder is 20 to 30 parts, and the weight portion of the water is 20 to 30 parts.

[0018] Optionally, the temperature of the aging is 40 - 50 °C, and the time of the aging is 24 - 48 h.

[0019] Optionally, the temperature of the frosting is 30 - 35 °C, and the time of the frosting is 2 - 4 min.

[0020] In a third aspect, a frosted glass is provided, which is prepared by the method as described in the second aspect.

[0021] In a fourth aspect, an application of the frosted glass as described in the third aspect in preparing AG products is provided.

[0022] Compared with the prior art, the present application has the following beneficial effects:

[0023] By using aminosulfonic acid as the acidity regulator, compared with using hydrochloric acid, sulfuric acid, nitric acid, etc. as the acidity regulator in the related art, on the one hand, it can reduce the environmental pollution caused by the volatilization of the acid solution and the harm to human health, and on the other hand, this aminosulfonic acid has strong acidity and can accelerate the reaction rate compared with organic acids such as citric acid, improving the frosting efficiency and frosting roughness, so that the frosted glass product can meet the application requirements. Furthermore, by using ammonium fluoride or ammonium bifluoride as the reaction main body and adjusting the weight portions of the fluoride salt and aminosulfonic acid within the above ranges, the acidity and frosting effect of the entire frosting reaction system can be better adjusted. For example, when the content of the fluoride salt is too small, it is easy to cause slow frosting and local missed frosting, while when the content of the fluoride salt is too large, it is easy to cause fast frosting, thus easily resulting in uneven frosting and missed frosting, etc. Detailed Implementation Modes

[0024] The following further elaborates on this application in combination with specific embodiments. This 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 disclosure of this application more thorough and comprehensive.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the specification of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0026] Based on the above technical problems, some embodiments of this application provide a sodium-calcium glass frosting powder, including: fluoride salts and sulfamic acid. Among them, the fluoride salts include: at least one of ammonium bifluoride and ammonium fluoride; the weight portion of the fluoride salts is 20 - 30 parts, and the weight portion of the sulfamic acid is 25 - 35 parts.

[0027] Among them, the weight portion represents the mass ratio of each component in the sodium-calcium glass frosting powder and is used to represent the proportional relationship between the components. How much 1 weight portion is can be determined according to the actual situation. By way of example, 1 weight portion can be 1 g, 10 g, or 100 g.

[0028] Here, in this sodium-calcium glass frosting powder, the mass ratio of the fluoride salts to the sulfamic acid is 20:35 - 30:25, that is, the mass ratio is 4:7 - 6:5. That is to say, regardless of the mass of the fluoride salts in the sodium-calcium glass frosting powder, as long as the mass ratio of the fluoride salts to the sulfamic acid is within the range of 4:7 - 6:5, it is within the protection scope of this application.

[0029] By way of example, the weight portion of the fluoride salts can be 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts, or 30 parts. At this time, the weight portion of the sulfamic acid can be 25 parts, 26 parts, 27 parts, 28 parts, 29 parts, 30 parts, 31 parts, 32 parts, 33 parts, 34 parts, or 35 parts.

[0030] By way of another example, taking 1 weight portion as 10 g, the weight of the fluoride salts can be 200 g, 210 g, 220 g, 230 g, 240 g, 250 g, 260 g, 270 g, 280 g, 290 g, or 300 g. At this time, the weight of the sulfamic acid can be 250 g, 260 g, 270 g, 280 g, 290 g, 300 g, 310 g, 320 g, 330 g, 340 g, or 350 g.

[0031] Among them, sulfamic acid is an inorganic solid acid formed by replacing the hydroxyl group of sulfuric acid with an amino group. The aqueous solution of sulfamic acid has the same strong acidity as hydrochloric acid, sulfuric acid, etc., so it is also called solid sulfuric acid. It has the characteristics of non-volatility, no odor, and low toxicity to the human body. In this application, sulfamic acid is used as an acidity regulator to adjust the acidity of the frosting solution so that soda-lime glass can be frosted in an environment with appropriate acidity and low environmental pollution.

[0032] As a fluoride etchant, fluoride plays a role in providing water-soluble fluoride ions. That is, during the frosting process, fluoride provides fluoride ions, which combine with hydrogen ions (here referring to hydrogen ions provided by sulfamic acid) in the solution to form hydrofluoric acid. Hydrofluoric acid reacts with silicon dioxide in soda-lime glass to form silicate, thereby frosting the soda-lime glass.

[0033] Soda-lime glass is mainly composed of silicon dioxide, calcium oxide, sodium oxide, etc. Silicon dioxide is the main component of soda-lime glass. Sodium oxide can increase the thermal expansion coefficient of the glass and reduce the thermal stability, chemical stability, and mechanical strength of the glass. The main role of calcium oxide in the glass is to increase the chemical stability and mechanical strength of the glass. Excessive content will make the glass brittle. Usually, the content of calcium oxide usually does not exceed 12.5%.

[0034] Based on the above reaction principle, it can be known that the frosting effect of soda-lime glass is related to the reaction rate between hydrofluoric acid and soda-lime glass, etc.

[0035] That is, as the corrosion rate of hydrofluoric acid on soda-lime glass is faster, although it can greatly improve the frosting reaction rate, it is not conducive to improving the uniformity of frosting. And as the corrosion rate of hydrofluoric acid on soda-lime glass is slower, it is not conducive to the improvement of the frosting reaction rate, and there may also be a phenomenon of missed frosting.

[0036] And how to solve the problem that inorganic acids are prone to volatilization in the above-mentioned related technologies, which is not conducive to environmental protection and the health of operators, and to adjust the addition amounts of acidity regulators, fluorides, etc., so as to maximize the frosting uniformity and roughness while reasonably controlling the frosting reaction rate and reducing the phenomenon of missed frosting is particularly important.

[0037] Based on the above problems, in the sodium-calcium glass frosting powder provided in the embodiments of the present application, by using sulfamic acid as an acidity regulator, compared with using hydrochloric acid, sulfuric acid, nitric acid, etc. as acidity regulators in the related art, on the one hand, it can reduce the environmental pollution caused by the volatilization of acid solution and the harm to human health. On the other hand, this sulfamic acid has strong acidity and can accelerate the reaction rate compared with organic acids such as citric acid, improving the frosting efficiency and frosting roughness, so that the frosted glass products can meet the application requirements. On the other hand, by using ammonium fluoride or ammonium bifluoride as the reaction main body and adjusting the weight parts of the fluoride salt and sulfamic acid within the above ranges, the acidity of the entire frosting reaction system and the frosting effect can be better adjusted. For example, when the content of the fluoride salt is too small, it is easy to cause slow frosting and local missed frosting phenomena, while when the content of the fluoride salt is too large, it is easy to cause fast frosting, resulting in uneven frosting and missed frosting and other phenomena.

[0038] In addition, through experiments, it is found that by controlling the weight parts of the fluoride salt and sulfamic acid within the above ranges, frosted glass products with higher roughness can be obtained, thus meeting the application requirements for the roughness of frosted glass products in electronic blackboards.

[0039] Exemplarily, the roughness of the above-obtained frosted glass products can reach more than 1.6 microns. While the roughness of the frosted glass products prepared by organic acids such as citric acid is below 1.2 microns.

[0040] In some embodiments, the roughness of the above frosted glass products can reach 1.6 microns to 2.4 microns. Exemplarily, the roughness generated by the frosted glass can be 1.6 microns, 1.7 microns, 1.8 microns, 1.9 microns, 2.0 microns, 2.1 microns, 2.2 microns, 2.3 microns or 2.4 microns by measurement. It can meet the application requirements for the roughness of frosted glass products in electronic blackboards and the like.

[0041] In some embodiments, the fluoride salt includes ammonium bifluoride.

[0042] In these embodiments, by using ammonium bifluoride, compared with using ammonium fluoride, when the weight parts remain unchanged, due to the presence of hydrogen ions in ammonium bifluoride, the acidity of the frosting reaction system can be greatly improved. And through experiments, it is found that the frosted glass products prepared by using ammonium bifluoride have better frosting effects. This shows that using ammonium bifluoride can adjust the acidity of the frosting reaction system to suitable frosting conditions to the greatest extent, facilitating the frosting reaction to proceed at an appropriate speed, thus facilitating the adjustment of frosting uniformity, preventing the phenomenon of local missed frosting easily caused by slow frosting, and the problem of uneven frosting easily caused by fast frosting, and further improving the frosting effect to the greatest extent.

[0043] In some embodiments, the sodium-calcium glass frosting powder further comprises: zinc chloride. The weight portion of zinc chloride is 10-15 parts. For example, when the weight portion of the fluoride salt is 20-30 parts, the weight portion of zinc chloride can be 10 parts, 11 parts, 12 parts, 13 parts, 14 parts or 15 parts. Still taking 1 weight portion as 10 g as an example, the weight of zinc chloride can be 100 g, 110 g, 120 g, 130 g, 140 g or 150 g.

[0044] In these embodiments, through experiments, it is found that by adding zinc chloride, on the one hand, the viscosity of the frosting solution can be adjusted, so that the frosting solution can fully contact the glass to be frosted, avoiding the phenomenon of missed frosting. On the other hand, by using zinc chloride, the appearance of the frosted glass product can be repaired, and a frosted glass product with good frosting uniformity can be prepared; specifically, zinc chloride forms a complex in water and forms a metal complex with the metal oxide in the sodium-calcium glass, so that the reaction can be more uniform, and thus the frosting can be more uniform. And through experiments, it is found that the frosting effect of using zinc chloride is better, while the frosting effect is worse by adding calcium chloride.

[0045] In some embodiments, the sodium-calcium glass frosting powder further comprises: water-soluble potassium salt. The weight portion of the water-soluble potassium salt is 2-5 parts. For example, when the weight portion of the fluoride salt is 20-30 parts, the weight portion of the water-soluble potassium salt can be 2 parts, 3 parts, 4 parts or 5 parts. Still taking 1 weight portion as 10 g as an example, the weight of the water-soluble potassium salt can be 20 g, 30 g, 40 g or 50 g.

[0046] The addition of the water-soluble potassium salt enables the fluoride salt to provide fluoride ions during the reaction, combine with the hydrogen ions in the solution to generate hydrofluoric acid, and hydrofluoric acid can generate potassium silicate with the water-soluble potassium salt. Compared with sodium silicate, potassium silicate has higher solubility and the generated particle size is smaller. Therefore, the addition of the water-soluble potassium salt can make the frosted glass product have a more delicate and higher roughness frosting effect, and the addition of the water-soluble potassium salt can also increase the gloss of the frosted glass product and improve the light transmission effect.

[0047] In some embodiments, the water-soluble potassium salt includes at least one of potassium sulfate and potassium nitrate. In these embodiments, potassium sulfate and potassium nitrate are less likely to absorb moisture than potassium chloride, so they are not easily caked, and can avoid bringing moisture during the weighing process and affecting the accuracy.

[0048] In some embodiments, the sodium-calcium glass frosting powder further comprises: a thickening agent. The weight portion of the thickening agent is 1-3 parts. For example, when the weight portion of the fluoride salt is 20-30 parts, the weight portion of the thickening agent can be 1 part, 2 parts, 3 parts or 4 parts. Still taking 1 weight portion as 10 g as an example, the weight of the thickening agent can be 10 g, 20 g, 30 g or 40 g.

[0049] In these embodiments, by adding a thickener, the viscosity and fluidity of the frosting liquid can be adjusted, thereby giving the frosting liquid a good frosting effect, and by limiting the weight of the thickener to the above range, the leakage of frosting can be reduced and the uniformity, glossiness and roughness of the frosting can be improved.

[0050] In some embodiments, the thickener includes at least one of barium sulfate and bentonite. Barium sulfate can also act as a filler, which can make the frosting liquid better contact with the frosted glass, and can give the frosting liquid a good frosting effect by adjusting the viscosity and fluidity of the frosting liquid.

[0051] Some embodiments of the present application provide a method for preparing frosted glass, comprising:

[0052] The soda-lime glass frosting powder and water are mixed and aged to prepare a soda-lime glass frosting liquid;

[0053] Soda-lime glass is frosted with soda-lime glass frosting liquid.

[0054] Among them, aging refers to the process of mixing soda-lime glass frosting powder and water and stirring them evenly to allow the components in the soda-lime glass frosting powder to react. The longer the aging time, the better the frosting effect.

[0055] In some embodiments, during aging, the weight portion of fluoride salt in the soda-lime glass frosting powder is 20-30 parts, and the weight portion of water is 20-30 parts.

[0056] That is, in these embodiments, the mass ratio of fluoride salt to water can be 20:30 to 30:20. Through experiments, it is found that by controlling the weight of fluoride salt in the soda-lime glass frosting powder within the range of 20 to 30 parts, and controlling the weight of water within the range of 20 to 30 parts, a frosting liquid with appropriate acidity can be prepared, which is convenient for controlling the reaction speed and reaction effect of frosting, thereby preparing frosted glass with good frosting effect and reducing the problem of uneven frosting such as leakage.

[0057] In some embodiments, the aging temperature is 40-50° C., and the aging time is 24 to 48 hours.

[0058] For example, the aging temperature may be 40° C., 41° C., 42° C., 43° C., 44° C., 45° C., 46° C., 47° C., 48° C., 49° C., or 50° C. The aging time may be 24 h, 25 h, 26 h, 27 h, 28 h, 29 h, 30 h, 31 h, 32 h, 33 h, 34 h, 35 h, 36 h, 37 h, 38 h, 39 h, 40 h, 41 h, 42 h, 43 h, 44 h, 45 h, 46 h, 47 h, or 48 h.

[0059] In these embodiments, by controlling the ripening temperature and time within the above ranges, the sand-blasting solution can reach the optimal sand-blasting state.

[0060] In some embodiments, the temperature of the sand-blasting is 30 - 35 °C, and the time of the sand-blasting is 2 - 4 min.

[0061] Exemplarily, the temperature of the sand-blasting can be 30 °C, 31 °C, 32 °C, 33 °C, 34 °C or 35 °C. The time of the sand-blasting can be 2 min, 3 min or 4 min.

[0062] In these embodiments, by controlling the temperature of the sand-blasting within the above ranges, the reaction rate of the sand-blasting can be controlled within a suitable range, so that while improving the sand-blasting efficiency, the roughness and uniformity of the sand-blasting can be maximally improved.

[0063] During the sand-blasting process, methods such as immersion or sand pouring can be adopted.

[0064] The preparation method of the above sand-blasted glass has a simple process, good sand-blasting uniformity. The soda-lime glass after sand-blasting has high gloss, high roughness, low haze, and good sand-blasting uniformity, and can reduce the probability of missed sand-blasting.

[0065] Some embodiments of the present application provide a sand-blasted glass prepared by the method as described above.

[0066] In some embodiments, the roughness of the sand-blasted glass is 1.6 microns to 2.4 microns.

[0067] In these embodiments, the sand-blasted glass has a relatively high roughness and can meet the anti-glare application requirements of an electronic blackboard.

[0068] In some embodiments, the gloss of the sand-blasted glass is 65 - 85%, and the haze is 20 - 40%.

[0069] Some embodiments of the present application provide an application of the sand-blasted glass as described above in the preparation of AG products. Exemplarily, the AG product can be a product with high roughness requirements such as an electronic blackboard.

[0070] When the sand-blasted glass is used in the preparation of AG products, it has relatively high roughness and gloss, and can meet the application requirements of AG products for gloss and roughness.

[0071] The specific embodiments of the present application are introduced above. In order to objectively illustrate the technical effects generated by the present application, next, the following examples and comparative examples will be described.

[0072] In the following examples and comparative examples, all raw materials can be obtained commercially. To ensure the reliability of the experiments, the raw materials used in the following examples and comparative examples have the same physical and chemical parameters or have been subjected to the same treatment.

[0073] Example 1

[0074] The preparation method of the frosted glass in Example 1 is as follows:

[0075] Step 1): Weigh 20 parts by weight of ammonium bifluoride, 25 parts by weight of sulfamic acid, 10 parts by weight of zinc chloride, 2 parts by weight of potassium nitrate, 1 part by weight of bentonite and 20 parts by weight of pure water, mix them to obtain a mixed solution, and cure the mixed solution at 45 °C for 36 h to obtain a sodium-calcium glass frosting solution. Among them, the parts by weight of each component in Example 1 are shown in Table 1 below.

[0076] Step 2): At 35 °C, soak the sodium-calcium glass in the sodium-calcium glass frosting solution prepared in Step 1 for 3 min to frost the sodium-calcium glass and obtain the frosted glass.

[0077] Example 2

[0078] The preparation method of the frosted glass in Example 2 is basically the same as that in Example 1. The difference is that in Step 1, the parts by weight of ammonium bifluoride are 30 parts, the parts by weight of sulfamic acid are 26 parts, the parts by weight of zinc chloride are 15 parts, the parts by weight of potassium nitrate are 3 parts, the parts by weight of bentonite are 2 parts, and the parts by weight of pure water are 25 parts. Specifically, it can be seen in Table 1 below.

[0079] Example 3

[0080] The preparation method of the frosted glass in Example 7 is basically the same as that in Example 1. The difference is that in Step 1, the parts by weight of ammonium bifluoride are 25 parts, the parts by weight of sulfamic acid are 35 parts, the parts by weight of zinc chloride are 12 parts, the parts by weight of potassium nitrate are 5 parts, the parts by weight of bentonite are 3 parts, and the parts by weight of pure water are 30 parts. Specifically, it can be seen in Table 1 below.

[0081] Example 4

[0082] The preparation method of the frosted glass in Example 4 is basically the same as that in Example 1. The difference is that in Step 1, the parts by weight of ammonium bifluoride are 30 parts, the parts by weight of sulfamic acid are 30 parts, the parts by weight of zinc chloride are 10 parts, the parts by weight of potassium nitrate are 2 parts, the parts by weight of bentonite are 2 parts, and the parts by weight of pure water are 20 parts. Specifically, it can be seen in Table 1 below.

[0083] Example 5

[0084] The preparation method of the frosted glass in Example 5 is basically the same as that of the frosted glass in Example 1, except that in step 1), ammonium bifluoride is replaced by ammonium fluoride, as specifically shown in Table 1 below.

[0085] Example 6

[0086] The preparation method of the frosted glass in Example 6 is basically the same as that of the frosted glass in Example 2, except that in step 1), ammonium bifluoride is replaced by ammonium fluoride, as specifically shown in Table 1 below.

[0087] Example 7

[0088] The preparation method of the frosted glass in Example 7 is basically the same as that of the frosted glass in Example 3, except that in step 1), ammonium bifluoride is replaced by ammonium fluoride, as specifically shown in Table 1 below.

[0089] Comparative Example 1

[0090] The preparation method of the frosted glass in Comparative Example 1 is basically the same as that of the frosted glass in Example 1, except that in step 1), the weight portion of ammonium bifluoride is 20 parts and the weight portion of sulfamic acid is 40 parts, as specifically shown in Table 1 below.

[0091] Comparative Example 2

[0092] The preparation method of the frosted glass in Comparative Example 2 is basically the same as that of the frosted glass in Example 1, except that in step 1), the weight portion of ammonium bifluoride is 20 parts and the weight portion of sulfamic acid is 15 parts, as specifically shown in Table 1 below.

[0093] Comparative Example 3

[0094] The preparation method of the frosted glass in Comparative Example 3 is basically the same as that of the frosted glass in Example 1, except that in step 1), the weight portion of zinc chloride is 20 parts, as specifically shown in Table 1 below.

[0095] Comparative Example 4

[0096] The preparation method of the frosted glass in Comparative Example 4 is basically the same as that of the frosted glass in Example 1, except that in step 1), the weight portion of zinc chloride is 5 parts, as specifically shown in Table 1 below.

[0097] Comparative Example 5

[0098] The preparation method of the frosted glass in Comparative Example 5 is basically the same as that of the frosted glass in Example 1, except that in step 1), the weight portion of potassium nitrate is 8 parts, as specifically shown in Table 1 below.

[0099] Comparative Example 6

[0100] The preparation method of the sandblasted glass in Comparative Example 6 is basically the same as that of the sandblasted glass in Example 1, except that in step 1), the weight portion of potassium nitrate is 1 portion, as specifically shown in Table 1 below.

[0101] Comparative Example 7

[0102] The preparation method of the sandblasted glass in Comparative Example 7 is basically the same as that of the sandblasted glass in Example 1, except that in step 1), citric acid is used to replace aminosulfonic acid, as specifically shown in Table 1 below.

[0103] Comparative Example 8

[0104] The preparation method of the sandblasted glass in Comparative Example 8 is basically the same as that of the sandblasted glass in Example 1, except that in step 1), malic acid is used to replace aminosulfonic acid, as specifically shown in Table 1 below.

[0105] Table 1

[0106]

[0107]

[0108] The sandblasted glass prepared in the above Examples 1 to 7 and Comparative Examples 1 to 8 was post-treated. After single-sided polishing (i.e., single-sided etching) to 40 μm, the haze, gloss, roughness, and sandblasting conditions of each group were tested. The specific test results are shown in Table 2 below.

[0109] Table 2

[0110] Number Frosted effect Roughness Ra (μm) Haze (%) Glossiness (Gu) Example 1 Uniform 2.0 28 76 Example 2 Uniform 2.2 35 69 Example 3 Uniform 1.6 20 85 Example 4 Uniform 2.4 40 65 Example 5 Uniform 2.1 33 70 Example 6 Uniform 2.1 32 72 Example 7 Uniform 1.7 23 80 Comparative Example 1 Uniform 1.0 20 85 Comparative Example 2 Non-uniform 2.8 45 60 Comparative Example 3 Non-uniform 1.2 23 84 Comparative Example 4 Non-uniform 3.0 40 55 Comparative Example 5 Uniform 0.8 18 95 Comparative Example 6 Non-uniform 1.8 25 78 Comparative Example 7 Uniform 0.9 22 86 Comparative Example 8 Non-uniform 1.1 25 78

[0111] Combining Table 1 and Table 2, it can be seen that: the sandblasting powder composition or sandblasting solution mainly consists of ammonium bifluoride, aminosulfonic acid, potassium salt, and zinc chloride, and each component is formulated according to 20 to 30 parts by mass of ammonium bifluoride, 25 to 35 parts by mass of aminosulfonic acid, 2 to 5 parts by mass of potassium salt, 10 to 15 parts by mass of zinc chloride, 1 to 3 parts of thickener, and 20 to 30 parts of water. After sandblasting the soda-lime glass substrate, all products have uniform sandblasting and can be applied to the production of AG products with a roughness above 1.6 μm. Moreover, in Example 4, the roughness of the prepared AG product is the highest, reaching about 2.4 μm.

[0112] Comparisons among Example 1, Comparative Example 1 and Comparative Example 2 reveal that: when the ratio of the weight of fluorinated salts (such as ammonium fluoride or ammonium bifluoride) to the weight of sulfamic acid is too large, as in Comparative Example 2, although the roughness is relatively high, the frosting is uneven and cannot meet the application requirements for uniform frosting of AG products. While when the ratio of the weight of fluorinated salts (such as ammonium fluoride or ammonium bifluoride) to the weight of sulfamic acid is too small, as in Comparative Example 1, the phenomenon of relatively low roughness will occur, which cannot meet the roughness application requirements of AG products.

[0113] In addition, by comparing Example 1, Comparative Example 3 and Comparative Example 4, it can be concluded that uneven frosting will occur when the content of zinc chloride is either too high or too low.

[0114] By comparing Example 1, Comparative Example 5 and Comparative Example 6, it can be concluded that uneven frosting will also occur when the potassium salt content is either too high or too low. That is, when the ammonium salt content is high and the sulfamic acid content is low, the frosting uniformity will be affected, resulting in uneven frosting.

[0115] By comparing Example 1 and Comparative Example 7, it can be concluded that when the same content of sulfamic acid is replaced with citric acid, since the acidity of citric acid is relatively low, although a product with uniform frosting can be obtained, the roughness is relatively low.

[0116] By comparing Example 1 and Comparative Example 8, it can be concluded that when the same content of sulfamic acid is replaced with malic acid, the frosted glass has uneven frosting and relatively low roughness, and cannot meet the roughness application requirements of AG products.

[0117] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as within the scope described in this specification.

[0118] The above-described embodiments merely represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A sodium-calcium glass frosting powder, characterized in that, The sodium-calcium glass frosting powder is composed of a fluoride salt, sulfamic acid, zinc chloride, a water-soluble potassium salt, and a thickening agent; Among them, the fluoride salt includes at least one of ammonium bifluoride and ammonium fluoride; the weight portion of the fluoride salt is 20-30 parts, and the weight portion of the sulfamic acid is 25-35 parts; The weight portion of the zinc chloride is 10-15 parts, the weight portion of the water-soluble potassium salt is 2-5 parts, and the weight portion of the thickening agent is 1-3 parts.

2. A method for preparing frosted glass, characterized in that, Including: Mix the sodium-calcium glass frosting powder as described in claim 1 with water for aging to prepare a sodium-calcium glass frosting solution; Use the sodium-calcium glass frosting solution to frost the sodium-calcium glass.

3. The method according to claim 2, wherein During aging, the weight portion of the fluoride salt in the sodium-calcium glass frosting powder is 20-30 parts, and the weight portion of the water is 20-30 parts.

4. The method according to claim 2, wherein The aging temperature is 40-50 °C, and the aging time is 24-48 h.

5. The method according to claim 2, wherein The frosting temperature is 30-35 °C, and the frosting time is 2-4 min.

6. A sandblasted glass, characterized in that, Prepared by the method according to any one of claims 2-5.

7. Use of a frosted glass as described in claim 6 in the preparation of an AG product.

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