Functional solution, method for improving glass Lab value, glass and preparation method thereof

Abstract

The present invention relates to a functional solution, a method for improving the Lab value of glass, glass and a preparation method thereof. The functional solution comprises the following components in mass percentage: 10% to 60% of an inorganic alkaline agent, 2% to 8% of a chelating agent, 1% to 4% of a corrosion inhibitor and 28% to 87% of water; the mass ratio of the corrosion inhibitor to the chelating agent is 1:(1 to 4); the mass ratio of the corrosion inhibitor to the inorganic alkaline agent is 1:(5 to 50); the inorganic alkaline agent is selected from at least one of potassium hydroxide and lithium hydroxide; the chelating agent is selected from at least one of trisodium citrate, sodium gluconate, tetrasodium ethylenediaminetetraacetic acid and sodium hexametaphosphate. The solution can restore the color of the glass surface to a normal state, and Lab reaches the required range.

Description

Technical Field

[0001] The invention relates to the technical field of glass, and in particular to a functional solution, a method for improving the Lab value of glass, glass and a preparation method thereof. Background Art

[0002] With the development of science and technology, electronic products, especially mobile terminals, have been widely used in life and work, and users have higher and higher standards for the functions and appearance of mobile terminals. Glass is widely used as a cover in electronic products, such as 2D, 2.5D and 3D glass cover, because it has the characteristics of no shielding effect on signals and is not easy to be scratched during use.

[0003] In the glass deep processing industry, during the glass polishing, cleaning and other processing processes, the glass surface may be severely hydrolyzed, or the glass may react chemically with acids and alkalis to generate substances such as silicic acid or sodium silicate that remain on the glass surface, causing the color of the glass surface to change, thereby increasing the b value in the glass Lab value (color model), which does not meet the requirements. Specifically, when the b value is -0.71 to -0.4, the glass is not blue or slightly blue in appearance, and the appearance is qualified; when the b value is greater than -0.4, the appearance is more serious blue, so it is an appearance unqualified (NG) product.

[0004] At present, the industry's main method of dealing with glass products with b values ​​exceeding the control range is physical methods, such as re-polishing. However, this method increases production costs, and the b value may be NG again after cleaning. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a cheap and efficient functional solution that can be used to improve the Lab value of glass, which can reduce the b value of glass to below -0.4, so that glass with Lab value not within the required range can meet the requirements again, and reduce the possibility of the glass b value becoming NG again.

[0006] The technical solution is as follows:

[0007] A functional solution comprising the following components in percentage by weight:

[0008]

[0009]

[0010] The mass ratio of the corrosion inhibitor to the chelating agent is 1:(1-4);

[0011] The mass ratio of the corrosion inhibitor to the inorganic alkaline agent is 1:(5-50);

[0012] The inorganic alkaline reagent is selected from potassium hydroxide and lithium hydroxide or a mixture of the two;

[0013] The chelating agent is selected from one or a mixture of trisodium citrate, sodium gluconate, tetrasodium ethylenediaminetetraacetate and sodium hexametaphosphate.

[0014] In one of the embodiments, the mass ratio of the chelating agent to the corrosion inhibitor is (2-3):1.

[0015] In one of the embodiments, the mass ratio of the corrosion inhibitor to the inorganic alkaline agent is 1:(10-30).

[0016] In one embodiment, the corrosion inhibitor is selected from one or a mixture of polyols and tetraborates.

[0017] In one embodiment, the functional solution includes the following components in percentage by weight:

[0018]

[0019] The mass ratio of the corrosion inhibitor to the chelating agent is 1:(2-3);

[0020] The mass ratio of the corrosion inhibitor to the inorganic alkaline agent is 1:(10-30).

[0021] The present invention also provides a method for using the functional solution as described above, which is used to improve the Lab value of glass. The technical solution is as follows:

[0022] A method for improving the Lab value of glass, comprising the following steps:

[0023] The glass is contacted with the functional solution as described above to perform a color correction treatment.

[0024] In one embodiment, the color correction treatment is performed at a temperature of ≥60°C and for a time of ≥30 min.

[0025] In one embodiment, the temperature of the color correction treatment is 90°C to 150°C.

[0026] In one embodiment, the color correction treatment takes 30 minutes to 90 minutes.

[0027] In one embodiment, the glass is contacted with the functional solution by dipping, spraying or spin coating.

[0028] The present invention also provides a method for preparing glass, which comprises the steps of polishing the glass;

[0029] The polishing process comprises:

[0030] The glass is subjected to color correction treatment according to the method for improving the Lab value of the glass as described above.

[0031] In one embodiment, the method for preparing glass further comprises the step of cleaning the glass:

[0032] The cleaning process comprises:

[0033] The glass is subjected to color correction treatment according to the method for improving the Lab value of the glass as described above.

[0034] The present invention also provides glass, which is prepared by the above-mentioned method for preparing glass.

[0035] The present invention has the following beneficial effects:

[0036] The functional solution provided by the present invention mainly includes water, inorganic alkaline reagents, chelating agents and corrosion inhibitors in a specific ratio. Among them, the inorganic alkaline reagent reacts with the silica sol or silanol on the surface of the glass to generate silicates, and then the silicates on the surface of the glass are removed by the chelating agent, so that the color of the glass surface returns to normal, that is, Lab reaches the required range, and the use of a specific proportion of corrosion inhibitors can prevent the inorganic alkaline reagent from over-corroding the glass, generating too much silicates that cannot be completely removed by the chelating agent, resulting in poor Lab improvement effect, and can also reduce the damage rate of hydroxide ions to the new surface layer and reduce the proportion of glass scratches. In addition, due to the use of a chelating agent, it can also prevent the glass effect from being different due to changes in water hardness.

[0037] This functional solution can be used simply to repair glass with a Lab value of NG, or the functional solution can be added to cleaning agents, polishing liquids and other systems to repair the color of the glass. It is used to prevent the glass from having a Lab value of NG during cleaning and polishing processes. It is simple, efficient and has broad application prospects. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below in conjunction with specific embodiments. The present invention 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 the present invention more thoroughly understood.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0040] Where “including,” “having,” and “comprising” are used herein, it is intended to cover a non-exclusive inclusion, and another component may also be added unless explicit limiting terms such as “only,” “consisting of,” etc. are used.

[0041] The words "preferably", "more preferably", "preferably", "better", etc. in the present invention refer to embodiments of the present invention that can provide certain beneficial effects in certain circumstances. However, other embodiments may also be preferred under the same circumstances or other circumstances. In addition, the statement of one or more preferred embodiments does not imply that other embodiments are not applicable, nor is it intended to exclude other embodiments from the scope of the present invention. That is, in the present invention, "preferably", "more preferably", "preferably", "better", etc. are only used to describe implementation methods or examples with better effects, but do not constitute a limitation on the scope of protection of the present invention.

[0042] In the present invention, “further”, “furthermore”, “particularly”, etc. are used for descriptive purposes to indicate differences in content, but should not be construed as limiting the scope of protection of the present invention.

[0043] In the present invention, "at least one" means more than one, such as one, two and more than two. "Multiple" or "several" means at least two, such as two, three, etc., and "multilayer" means at least two layers, such as two layers, three layers, etc., unless otherwise clearly and specifically defined. In the description of the present invention, "several" means at least one, such as one, two, etc., unless otherwise clearly and specifically defined.

[0044] When a numerical range is disclosed herein, the above range is considered to be 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.

[0045] If not otherwise specified, all steps of the present invention may be performed sequentially or randomly. For example, the method includes steps (a) and (b), which means that the method may include steps (a) and (b) performed sequentially, or may include steps (b) and (a) performed sequentially. For example, the method may further include step (c), which means that step (c) may be added to the method in any order, for example, the method may include steps (a), (b) and (c), or may include steps (a), (c) and (b), or may include steps (c), (a) and (b), etc.

[0046] Unless mentioned to the contrary, terms in the singular may include plural forms and should not be construed as being one in number.

[0047] In the present invention, "above" or "below" includes the number itself. For example, "below 1" includes 1.

[0048] In the present invention, "immersing", "soaking" and "immersing" have the same meaning, and all refer to the glass being completely immersed in the functional solution.

[0049] During the glass polishing and cleaning process, the glass Lab value may have a b value greater than -0.4, a bluish appearance, and a product NG. At present, the industry mainly uses physical methods to deal with glass products with b values ​​exceeding the control range, such as re-polishing, but this method increases production costs, and the b value may be NG again after cleaning. A chemical method has been reported that reduces the pH of the cleaning agent to prevent glass corrosion and thus prevent glass discoloration, but this solution only reduces the degree of glass discoloration and cannot prevent glass discoloration. In addition, this solution cannot repair glass that has already discolored.

[0050] Based on this, the purpose of the present invention is to provide a cheap and efficient functional solution that can be used to improve the Lab value of glass, which can reduce the b value of glass to below -0.4, so that glass with Lab value not within the required range can meet the requirements again, and reduce the possibility of the glass b value becoming NG again.

[0051] The technical solution is as follows:

[0052] A functional solution comprising the following components in percentage by weight:

[0053]

[0054] The mass ratio of the corrosion inhibitor to the chelating agent is 1:(1-4);

[0055] The mass ratio of the corrosion inhibitor to the inorganic alkaline agent is 1:(5-50);

[0056] The inorganic alkaline reagent is selected from potassium hydroxide and lithium hydroxide or a mixture of the two;

[0057] The chelating agent is selected from one or a mixture of trisodium citrate, sodium gluconate, tetrasodium ethylenediaminetetraacetate and sodium hexaphosphate.

[0058] The present invention mainly provides water, inorganic alkaline reagents, chelating agents and corrosion inhibitors in specific proportions. Among them, the inorganic alkaline reagent reacts with the silica sol or silanol on the surface of the glass to generate silicates, and then the silicates on the surface of the glass are removed by the chelating agent, so that the color of the glass surface returns to normal, that is, Lab reaches the required range, and the use of a specific proportion of corrosion inhibitors can prevent the inorganic alkaline reagent from over-corroding the glass, generating too much silicates that cannot be completely removed by the chelating agent, reducing the Lab improvement effect, and can also reduce the damage rate of hydroxide ions to the new surface layer, reducing the proportion of glass scratches. In addition, due to the use of a chelating agent, it can also prevent the glass effect from being different due to changes in water hardness.

[0059] In the functional solution of the present invention, the mass content of the inorganic alkaline agent is 10% to 60%, including but not limited to 10%, 12%, 15%, 18%, 20%, 22%, 25%, 28%, 30%, 32%, 35%, 38%, 40%, 42%, 45%, 48%, 50%, 52%, 55%, 58% and 60%, preferably 10% to 50%. When the content of the inorganic alkaline agent is lower than that of the present invention, the corrosion effect on the glass surface is poor, while if the content of the inorganic alkaline agent is too high, the glass will be over-corroded, too much silicate will be generated and cannot be completely removed by the chelating agent, reducing the Lab improvement effect, and may cause serious scratches on the glass surface, affecting other properties, such as impact resistance.

[0060] In the functional solution of the present invention, the inorganic alkaline agent is selected from potassium hydroxide and lithium hydroxide or a mixture of the two. It can be understood that the inorganic alkaline agent is potassium hydroxide, lithium hydroxide, or a mixture of potassium hydroxide and lithium hydroxide.

[0061] In the functional solution of the present invention, the mass content of the chelating agent is 2% to 8%, including but not limited to 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5% and 8%. When the content of the chelating agent is lower than that of the present invention, the silicate generated by the corrosion of the glass by the inorganic alkaline reagent cannot be completely removed, and the Lab improvement effect is reduced. As the content of the chelating agent increases, the effect of removing silicate increases.

[0062] In the functional solution of the present invention, the chelating agent is selected from one or a mixture of trisodium citrate, sodium gluconate, tetrasodium ethylenediaminetetraacetate and sodium hexametaphosphate. It can be understood that the chelating agent is trisodium citrate, or sodium gluconate, or tetrasodium EDTA, or sodium hexametaphosphate, or a mixture of trisodium citrate and sodium gluconate, or a mixture of trisodium citrate and tetrasodium EDTA, or a mixture of trisodium citrate and sodium hexametaphosphate, or a mixture of sodium gluconate and tetrasodium EDTA, or a mixture of sodium gluconate and sodium hexametaphosphate, or a mixture of tetrasodium EDTA and sodium hexametaphosphate, or a mixture of trisodium citrate, sodium gluconate and tetrasodium EDTA, or a mixture of trisodium citrate, sodium gluconate and sodium hexametaphosphate, or a mixture of trisodium citrate, sodium gluconate and sodium hexametaphosphate, or a mixture of trisodium citrate, sodium gluconate and sodium hexametaphosphate, or a mixture of sodium gluconate, tetrasodium EDTA and sodium hexametaphosphate, or a mixture of trisodium citrate, sodium gluconate, tetrasodium EDTA and sodium hexametaphosphate.

[0063] In the functional solution of the present invention, the mass content of the corrosion inhibitor is 1% to 4%, including but not limited to 1%, 1.5%, 2%, 2.5%, 3%, 3.5% and 4%. When the content of the corrosion inhibitor is lower than that of the present invention, it may cause excessive corrosion of the glass by the inorganic alkaline reagent, generate too much silicate that cannot be completely removed by the chelating agent, reduce the Lab improvement effect, and may cause serious scratches on the glass surface, affecting other properties, such as impact resistance. When the content of the corrosion inhibitor is higher than that of the present invention, the functional solution has a poor corrosion effect on the glass surface, which will also reduce the Lab improvement effect.

[0064] In one embodiment, the corrosion inhibitor is selected from one or a mixture of glycerol, sodium tetraborate and ethylene glycol. It can be understood that the corrosion inhibitor is glycerol, sodium tetraborate, ethylene glycol, a mixture of glycerol and sodium tetraborate, a mixture of glycerol and ethylene glycol, a mixture of sodium tetraborate and ethylene glycol, or a mixture of glycerol, sodium tetraborate and ethylene glycol.

[0065] It can be understood that in the functional solution of the present invention, the mass ratio of the chelating agent to the corrosion inhibitor is (1-4):1, including but not limited to 1:1, 1.5:1, 2:1, 2.5:1, 3:1, 3.5:1 and 4:1. Preferably, the mass ratio of the chelating agent to the corrosion inhibitor is (2-3):1. Further preferably, the mass ratio of the chelating agent to the corrosion inhibitor is 2:1.

[0066] It can be understood that in the functional solution of the present invention, the mass ratio of the corrosion inhibitor to the inorganic alkaline agent is 1: (5-50), including but not limited to 1: 5, 1: 7.5, 1: 10, 1: 12, 1: 15, 1: 20, 1: 25, 1: 30, 1: 35, 1: 40, 1: 45 and 1: 50. Preferably, the mass ratio of the corrosion inhibitor to the inorganic alkaline agent is 1: (10-30). Further preferably, the mass ratio of the corrosion inhibitor to the inorganic alkaline agent is 1: (15-25).

[0067] In the functional solution of the present invention, the mass content of water is 28% to 87%, including but not limited to 20%, 22%, 25%, 28%, 30%, 32%, 35%, 38%, 40%, 42%, 45%, 48%, 50%, 52%, 55%, 58%, 60%, 62%, 65%, 68%, 70%, 72%, 75%, 78%, 80%, 82%, 85% and 87%.

[0068] In one embodiment, the functional solution includes the following components in percentage by weight:

[0069]

[0070] The inorganic alkaline reagent is selected from potassium hydroxide and lithium hydroxide or a mixture of the two;

[0071] The chelating agent is selected from one or a mixture of trisodium citrate, sodium gluconate, tetrasodium EDTA and sodium hexametaphosphate;

[0072] The mass ratio of the corrosion inhibitor to the chelating agent is 1:(2-3);

[0073] The mass ratio of the corrosion inhibitor to the inorganic alkaline agent is 1:(10-30).

[0074] In one embodiment, the functional solution includes the following components in percentage by weight:

[0075]

[0076] The inorganic alkaline reagent is selected from potassium hydroxide and lithium hydroxide or a mixture of the two;

[0077] The chelating agent is selected from one or a mixture of trisodium citrate, sodium gluconate, tetrasodium EDTA and sodium hexametaphosphate;

[0078] The mass ratio of the corrosion inhibitor to the chelating agent is 1:(2-3);

[0079] The mass ratio of the corrosion inhibitor to the inorganic alkaline agent is 1:(15-25).

[0080] The present invention also provides a method for using the functional solution as described above, which is used to improve the Lab value of glass. The technical solution is as follows:

[0081] A method for improving the Lab value of glass, comprising the following steps:

[0082] The glass is contacted with the functional solution as described above to perform a color correction treatment.

[0083] In one embodiment, the temperature of the color correction treatment is ≥60°C and the time is ≥30 minutes. Such a temperature and contact time can make the functional solution play a better role and improve the glass Lab value.

[0084] It can be understood that in the present invention, the temperature of the color correction treatment is ≥ 60°C, including but not limited to 60°C, 70°C, 80°C, 90°C, 100°C, 110°C, 120°C, 130°C, 140°C, 150°C, 160°C, 170°C and 180°C. Preferably, the temperature of the color correction treatment is 90°C to 150°C. More preferably, the temperature of the color correction treatment is 100°C to 150°C. Under the preferred temperature conditions, the functional solution can play a better role and better improve the glass Lab value.

[0085] It can be understood that in the present invention, the time of the color correction treatment is more than 30 minutes, including but not limited to 30 minutes, 35 minutes, 40 minutes, 45 minutes, 50 minutes, 55 minutes, 60 minutes, 65 minutes, 70 minutes, 75 minutes, 80 minutes, 85 minutes, 90 minutes and 100 minutes. Preferably, the time of the color correction treatment is 30 minutes to 90 minutes. More preferably, the time of the color correction treatment is 60 minutes to 90 minutes. With the preferred contact time, the functional solution can play a better role and better improve the glass Lab value.

[0086] In one embodiment, the glass is contacted with the functional solution by dipping, spraying or spin coating.

[0087] In one embodiment, the method for improving the Lab value of glass comprises the following steps:

[0088] The glass is contacted with a functional solution to perform a color correction treatment;

[0089] The temperature of the color correction treatment is 100°C to 150°C, and the time is 60min to 90min;

[0090] The functional solution includes the following components in percentage by weight:

[0091]

[0092] The inorganic alkaline reagent is selected from potassium hydroxide and lithium hydroxide or a mixture of the two;

[0093] The chelating agent is selected from one or a mixture of trisodium citrate, sodium gluconate, tetrasodium EDTA and sodium hexametaphosphate;

[0094] The mass ratio of the corrosion inhibitor to the chelating agent is 1:(2-3);

[0095] The mass ratio of the corrosion inhibitor to the inorganic alkaline agent is 1:(10-30).

[0096] In one embodiment, the method for improving the Lab value of glass comprises the following steps:

[0097] The glass is contacted with a functional solution to perform a color correction treatment;

[0098] The temperature of the color correction treatment is 100°C to 150°C, and the time is 60min to 90min;

[0099] The functional solution includes the following components in percentage by weight:

[0100]

[0101] The inorganic alkaline reagent is selected from potassium hydroxide and lithium hydroxide or a mixture of the two;

[0102] The chelating agent is selected from one or a mixture of trisodium citrate, sodium gluconate, tetrasodium EDTA and sodium hexametaphosphate;

[0103] The mass ratio of the corrosion inhibitor to the chelating agent is 1:(2-3);

[0104] The mass ratio of the corrosion inhibitor to the inorganic alkaline agent is 1:(15-25).

[0105] In one embodiment, the method for improving the glass Lab value comprises the following steps:

[0106] 1) Mix an inorganic alkaline agent, a chelating agent, a corrosion inhibitor and water according to a formula ratio, stir evenly to prepare a functional solution, and heat the mixture to above 60° C.;

[0107] 2) After the temperature reaches the target, keep the temperature for 1 to 5 hours, and immerse the cleaned glass whose Lab value does not meet the requirements in the above functional solution for more than 30 minutes;

[0108] 3) After the soaking time reaches the required time, take out the glass and clean it with water;

[0109] 4) Test the Lab condition of the glass.

[0110] The present invention also provides a method for preparing glass, comprising the steps of polishing the glass;

[0111] The polishing comprises:

[0112] The glass is subjected to color correction treatment according to the method for improving the Lab value of the glass as described above.

[0113] In one embodiment, the method for preparing glass further comprises the step of cleaning the glass:

[0114] The cleaning process comprises:

[0115] The glass is subjected to color correction treatment according to the method for improving the Lab value of the glass as described above.

[0116] The method for improving the Lab value of glass can be simply used to repair glass with a Lab value of NG, or the functional solution can be added to a cleaning agent, polishing liquid or other system, or directly added during the polishing and / or cleaning process at a temperature of ≥60°C, so that the glass is in contact with the functional solution for more than 30 minutes to perform a color repair operation, which is used to prevent the Lab value of the glass from being NG during cleaning, polishing and other processes. The method is simple, efficient and has broad application prospects.

[0117] The present invention also provides glass, which is prepared by the above-mentioned method for preparing glass.

[0118] The present invention is further described below in conjunction with specific embodiments.

[0119] The following examples and comparative examples all use Corning glass-ceramics, 165.74*74.35 mm plates as samples.

[0120] The Lab value test method of the glass in the following embodiments and comparative examples is as follows: After immersion, use a Lab value tester to test, each group of verification tests 5pcs of products, each product tests 5 points, the specific result is based on the average value of 25 data, the closer the b value is to -0.7, the less blue the product is. Specifically, ① when the product is not blue or has no obvious blue, the b value is around -0.7, and below -0.4, the product is qualified; ② the glass is severely blue, the b value is greater than -0.4, and the product is unqualified.

[0121] Example 1

[0122] This embodiment provides a functional solution and a method for improving the Lab value of glass, the steps are as follows:

[0123] 1) Mix an inorganic alkaline agent, a chelating agent, a corrosion inhibitor and water according to a formula ratio, stir evenly to prepare a functional solution, and heat the mixture to 110° C.;

[0124] Wherein, in terms of mass percentage, the composition of the functional solution of this embodiment is as follows:

[0125]

[0126] 2) After the temperature reaches the target, keep the temperature for 2 hours, and immerse the cleaned glass whose Lab value does not meet the requirements in the above functional solution for 60 minutes;

[0127] 3) After the soaking time reaches the required time, take out the glass and clean it with water;

[0128] 4) Test the Lab condition of the glass.

[0129] The operation of Examples 2 to 17 and Comparative Examples 1 to 12 is basically the same as that of Example 1. The functional solution formula and color correction treatment parameters are shown in Table 1. The raw material not shown in the functional solution is water, and the sum of the weights of the raw materials is 100%.

[0130] Table 1: Main process parameters of Examples 1 to 19 and Comparative Examples 1 to 12

[0131]

[0132]

[0133]

[0134] The glasses of Examples 1 to 19 and Comparative Examples 1 to 12 were subjected to Lab tests, and the test results are shown in Table 2:

[0135] Table 2

[0136]

[0137]

[0138]

[0139] It can be seen from Table 2 that, compared with Comparative Examples 1 to 12, Examples 1 to 19 use the scheme of the present invention to perform color correction treatment on the glass whose b value does not meet the requirements, which has a significant improvement effect on the b value of the glass. In particular, Examples 1 to 3, 6, 9 to 13 and 17 can restore the b value of the glass to a state where it is almost not blue.

[0140] 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.

[0141] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A functional solution for improving the Lab value of glass, characterized in that: The components include the following mass percentages: The mass ratio of the corrosion inhibitor to the chelating agent is 1:(1-4); The mass ratio of the corrosion inhibitor to the inorganic alkaline agent is 1:(5-50); The inorganic alkaline reagent is selected from potassium hydroxide and lithium hydroxide or a mixture of the two; The chelating agent is selected from one or a mixture of trisodium citrate, sodium gluconate, tetrasodium EDTA and sodium hexametaphosphate; The corrosion inhibitor is selected from one or a mixture of polyols and tetraborates.

2. The functional solution according to claim 1, characterized in that: The mass ratio of the corrosion inhibitor to the chelating agent is 1:(2-3).

3. The functional solution according to claim 1, characterized in that: The mass ratio of the corrosion inhibitor to the inorganic alkaline agent is 1:(10-30).

4. The functional solution according to any one of claims 1 to 3, characterized in that: The corrosion inhibitor is selected from one or a mixture of glycerol, sodium tetraborate and ethylene glycol.

5. The functional solution according to claim 1, characterized in that: The components include the following mass percentages: The mass ratio of the corrosion inhibitor to the chelating agent is 1:(2-3); The mass ratio of the corrosion inhibitor to the inorganic alkaline agent is 1:(10-30).

6. A method for improving the Lab value of glass, characterized in that: The steps include: The glass is contacted with the functional solution according to any one of claims 1 to 5 to perform a color correction treatment.

7. The method for improving the glass Lab value according to claim 6, characterized in that: The temperature of the color correction treatment is ≥60°C and the time is ≥30min.

8. The method for improving the glass Lab value according to claim 7, characterized in that: The temperature of the color correction treatment is 90°C to 150°C; and / or The time for the color correction treatment is 30 minutes to 90 minutes.

9. A method for preparing glass, characterized in that: The steps of polishing the glass include: The polishing process comprises: The glass is subjected to color correction treatment according to the method for improving the Lab value of glass according to any one of claims 6 to 8.

10. A glass, characterized in that: The glass is prepared by the method for preparing glass according to claim 9.

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