Method for manufacturing ultra-thin flexible glass using bionic weathering enzyme composite glass thinning agent

Abstract

The present invention provides a method for manufacturing ultra-thin flexible glass using a bionic weathering enzyme composite glass thinning agent. By learning and imitating the principle that plants secrete bionic weathering enzymes to corrode rocks in nature, bionic weathering enzymes are artificially extracted and synthesized, which are used to uniformly dissolve glass, and when it reaches a certain thickness, it is taken out and washed to obtain a thin glass film. The bionic weathering enzyme composite glass thinning agent is safe with low toxicity, can uniformly and continuously dissolve glass, can uniformly and continuously thin without causing surface roughening, and can obtain a series of ultra-thin glass thicknesses by controlling the thinning time. The subsequent cleaning is easy, the yield is high, and the ultra-thin flexible glass with a thickness of 20 μm has a minimum bending radius of only 0.35 mm and a surface roughness Ra of less than 10 nm. When it is pure glass, the light transmittance in the visible light region exceeds 90%, and the hardness is the same as that of the raw glass.

Description

[Technical Field]

[0001] The present invention relates to the technical field of glass, and more particularly to a method for manufacturing ultra-thin flexible glass using a bionic weathering enzyme composite glass thinning agent. [Background technology]

[0002] Because glass has good light transmittance, scratch resistance, and corrosion resistance, currently ultra-thin glass is mainly used as the outermost protective layer of electronic display devices. However, conventional fusion drawing methods and fluoride etching methods cannot produce sufficiently thin and transparent glass with high yield, and therefore cannot meet the demands of flexible screens. Therefore, currently flexible screens mainly use transparent polyimide film as a protective layer, which is much less hard than glass but is extremely expensive.

[0003] Ultra-thin flexible glass films are typically produced by fusion glass drawing and fluoride etching. Due to the process, the thickness of ultra-thin glass produced by the fusion glass drawing method is typically over 200 μm, and it must be chemically thinned using fluoride. However, fluoride is highly toxic and tends to roughen the glass surface during thinning, requiring complex cleaning processes and susceptible to glass spalling during cleaning and subsequent tempering.

[0004] However, conventional alkaline glass thinning agents corrode silica with a strong alkaline solution, making them difficult to apply industrially, and they have poor theoretical speed and flatness. Summary of the Invention [Problem to be solved by the invention]

[0005] In order to solve the problems of the conventional fluoride method for thinning glass, such as high toxicity, strong corrosiveness, the need for repeated etching / cleaning, and low yield, the present invention provides a method for producing ultra-thin flexible glass using a bionic weathering enzyme composite glass thinning agent. By learning and imitating the principle of how plants in nature secrete bionic weathering enzymes to corrode rocks, the bionic weathering enzymes are artificially extracted and synthesized, and the bionic weathering enzymes are used to dissolve the glass, thereby uniformly dissolving the glass and obtaining thin, ultra-thin flexible glass. [Means for solving the problem]

[0006] The present invention provides The bionic weathering enzyme plant raw material is dissolved, pH adjusted, and stability increased, and then boiled and kept warm, and then filtered to obtain a first solution, and the pH of the first solution is adjusted, and then precipitated, and then filtered to obtain a first precipitate, and then the pH of the first precipitate is adjusted, and then precipitated, and then filtered to obtain a second precipitate, and then the second precipitate is dried to obtain a bionic weathering enzyme solid, in a bionic weathering enzyme extraction step S1; a bionic weathering enzyme glass thinning agent solution preparation step S2, in which 7 to 20 parts by weight of water, 0.1 to 2 parts by weight of a stabilizer, 0.1 to 1 part by weight of a pH adjuster C, and 0.1 to 1 part by weight of an auxiliary agent are added to 1 part by weight of the bionic weathering enzyme solid, and the mixture is stirred uniformly to obtain a bionic weathering enzyme glass thinning agent solution; The method for producing ultra-thin flexible glass using a bionic weathering enzyme composite glass thinning agent includes a glass thinning step S3 in which the glass to be thinned is completely immersed in a container containing a bionic weathering enzyme glass thinning agent solution, vibrated at a constant temperature of 60 to 120°C for 10 to 50 hours, and then removed and washed thoroughly with water to obtain the thinned glass.

[0007] The method for producing ultra-thin flexible glass using the bionic weathering enzyme composite glass thinning agent according to the present invention is preferably as follows: The method further includes a repeated thinning step S4, in which it is determined whether the thickness of the glass after thinning reaches the thinning target, and if so, the production of ultra-thin flexible glass is completed; if not, the bionic weathering enzyme glass thinning agent solution in the container of step S3 is replaced with unused bionic weathering enzyme glass thinning agent solution, and then step S3 is repeated.

[0008] In a preferred embodiment of the method for manufacturing ultra-thin flexible glass using the bionic weathering enzyme composite glass thinning agent of the present invention, the glass to be thinned in step S3 is a silicate glass having a SiO2 mass percentage of more than 65%, a CaO mass percentage of less than 12%, a MgO mass percentage of less than 8%, and a Fe2O3 mass percentage of less than 5%; The silicate glass is any one of soda-lime glass, white plate glass, quartz glass, high borosilicate glass, and high aluminosilicate glass. The working temperature of the bionic weathering enzyme glass thinning agent solution is 25~120℃.

[0009] In a preferred embodiment of the method for producing ultra-thin flexible glass using the bionic weathering enzyme composite glass thinning agent of the present invention, in step S1, the bionic weathering enzyme plant raw material is one or more of persimmon petiole, licorice, Chinese gallnut, Astragalus membranaceus, catechu, ginseng root, pine branch, rice root, lichen, tea, Salvia miltiorrhiza, white fruit leaf, lychee root, kiwi root, rose root, and quince root.

[0010] In a preferred embodiment of the method for producing ultra-thin flexible glass using the bionic weathering enzyme composite glass thinning agent of the present invention, in step S2, the pH adjuster C is one or more of sodium hydroxide, potassium hydroxide, calcium hydroxide, calcium oxide, aqueous ammonia, ethanolamine, diethanolamine, triethanolamine, and triethylamine; The concentration of the ammonia water is 20 to 30%.

[0011] In a preferred embodiment of the method for producing ultra-thin flexible glass using the bionic weathering enzyme composite glass thinning agent of the present invention, in step S2, the auxiliary agent is one or more of citric acid, citrates, ethylenediaminetetraacetic acid, ethylenediaminetetraacetate salts, tartaric acid, tartrates, potassium ferrocyanide, potassium sodium ferrocyanide, sodium sulfide, potassium sulfide, phosphoric acid, phosphates, tripolyphosphates, tripolyphosphates, hexametaphosphoric acid, and hexametaphosphates.

[0012] In a preferred embodiment of the method for producing ultra-thin flexible glass using the bionic weathering enzyme composite glass thinning agent of the present invention, step S1: 1-5 weight parts of bionic weathering enzyme plant raw materials are added to 20 weight parts of water-ethanol mixed solvent, and then 0.1-3 weight parts of pH adjuster A and 0.1-5 weight parts of stabilizer are added, and the mixture is stirred uniformly, and then heated to boiling, and then kept at 100-120°C for 6-48 hours, and the plant residue is filtered to obtain a first solution; dissolving step S11; a first filtration step S12 in which the first solution is cooled to room temperature, and then 0.2 to 5 parts by weight of precipitant A and 0.1 to 3 parts by weight of pH adjuster B are added, and the solution is allowed to stand at room temperature for 2 to 12 hours, and then filtered to obtain a first precipitate; The method includes a second filtration step S13 in which 1 part by weight of the first precipitate is dissolved in 6 to 20 parts by weight of water, heated to 60 to 100°C, 0.1 to 2 parts by weight of precipitant B is added, the mixture is allowed to stand for 2 to 12 hours, cooled, and then filtered to obtain a second precipitate.The second precipitate is dried to obtain a bionic weathering enzyme solid.

[0013] In a preferred embodiment of the method for producing ultra-thin flexible glass using the bionic weathering enzyme composite glass thinning agent of the present invention, the stabilizer in steps S11 and S2 is one or more of benzoic acid, benzoates, sorbic acid, sorbates, diacetic acid, diacetates, dithionite, dithionite, hydroquinone, tert-butylhydroquinone, catechol, tert-butylcatechol, pyrogallol, gallic acid, gallates, gallic acid esters, ascorbic acid, ascorbates, ascorbate esters, erythorbic acid, erythorbates, and erythorbate esters.

[0014] In a preferred embodiment of the method for producing ultra-thin flexible glass using the bionic weathering enzyme composite glass thinning agent according to the present invention, in step S11, the water-ethanol mixed solvent is a solution with a mass percentage of 1:0.1 to 0.7; In step S11, the pH adjuster A is one or more of sodium bicarbonate, potassium bicarbonate, sodium carbonate, potassium carbonate, ammonia water, lime, ethanolamine, citric acid, citrate salts, tartaric acid, and tartrate salts; The concentration of the ammonia water is 20 to 30%. In step S12, the pH adjuster B is one or more of magnesium oxide, magnesium hydroxide, calcium hydroxide, calcium oxide, acetic acid, acetate, citric acid, citrate, phosphoric acid, phosphate, and borax.

[0015] In a preferred embodiment of the method for producing ultra-thin flexible glass using the bionic weathering enzyme composite glass thinning agent of the present invention, in step S12, the precipitant A is one or more of tartaric acid, tartrate salts, malic acid, malate salts, phthalic acid, phthalate salts, citric acid, citrate salts, phosphoric acid, phosphate salts, polyphosphoric acid, polyphosphate salts, lactic acid, lactate salts, gluconic acid, gluconate salts, oxalic acid, and oxalate salts; In step S13, the precipitant B is one or more of ethanolamine, diethanolamine, triethanolamine, trimethylamine, triethylamine, ethylenediamine, isopropylamine, tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrapropylammonium hydroxide, and tetrabutylammonium hydroxide; Tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrapropylammonium hydroxide, and tetrabutylammonium hydroxide are all aqueous solutions with a concentration of 40%.

[0016] The technical solution of the present invention uses bionic weathering enzymes to dissolve the glass uniformly, and when a certain thickness remains, it is removed and washed to obtain a thin glass film. During the thinning process, the glass can ensure that the surface is uniformly thinned, and the resulting ultra-thin flexible glass has a smooth surface and its flexibility can meet the requirements of flexible displays.

[0017] Ultra-thin flexible glass films are typically produced by molten glass drawing and fluoride etching. The thickness of ultra-thin glass produced by the molten glass drawing method is typically over 200 μm, requiring subsequent chemical thinning using fluoride. However, fluoride is highly toxic and tends to roughen the glass surface during thinning, necessitating complex cleaning processes and potentially causing glass fracture during cleaning and subsequent tempering. However, the present invention uses a bionic weathering enzyme glass thinning agent to uniformly and continuously thin the glass. By controlling the thinning time, a range of ultra-thin glass thicknesses can be obtained, simplifying subsequent cleaning and increasing yield. In particular, ultra-thin flexible glass with a thickness of 20 μm can achieve a minimum bending radius of only 0.35 mm and a surface roughness Ra of less than 10 nm. When pure glass is used, the visible light transmittance exceeds 90% and the hardness is the same as that of raw glass.

[0018] This invention addresses the problems inherent in the conventional fluoride glass thinning process, such as high toxicity, strong corrosiveness, the need for repeated etching and cleaning, and low yields, by using a bionic weathering enzyme composite glass thinning agent to achieve glass thinning. Compared to conventional technologies, this technology avoids the repeated etching and cleaning processes and allows for thinning by static immersion, eliminating the intermediate stirring and shaking steps, making the glass less likely to break and significantly improving the yield of the glass thinning process. At the same time, the bionic weathering enzyme used is low-toxicity and easy to clean, resulting in a high production yield of ultra-thin glass and allowing it to be thinned to a specified thickness in one go.

[0019] Conventional alkaline glass thinning agents corrode silica with strong alkaline solutions, making them difficult to apply industrially. Their theoretical speed is less than 30% of that of bionic weathering enzyme glass thinning agents, and their flatness is poorer.

[0020] The method for manufacturing ultra-thin flexible glass using bionic weathering enzyme composite glass thinning agent is as follows.

[0021] [1] Bionic Weathering Enzyme Extraction Add 1-5 parts of bionic weathering enzyme plant raw material to 20 parts of a water-ethanol mixed solvent (1:0.1-0.7), add 0.1-3 parts of pH adjuster A and 0.1-5 parts of stabilizer, boil the solution, and then keep it at 100-120°C for 6-48 hours. Then, filter the remaining plant residue. The solution is cooled to room temperature, and 0.2-5 parts of precipitant A and 0.1-3 parts of pH adjuster B are added to the solution, which is then allowed to stand at room temperature for 2-12 hours and filtered. The filtered solid is dissolved in water at a mass ratio of 1:6-20, heated to 60-100°C, and then 0.1-2 parts of precipitant B is added. The mixture is allowed to stand for 2-12 hours, cooled, filtered, and the solid is dried to obtain a bionic weathering enzyme solid.

[0022] [2] Bionic Weathering Enzyme Glass Thinner Solution To 1 part of bionic weathering enzyme solid, add 7-20 parts of water, 0.1-2 parts of stabilizer, 0.1-1 part of pH adjuster C, and 0.1-1 part of auxiliary agent to obtain a bionic weathering enzyme glass thinning agent solution.

[0023] [3] Glass thinning process The glass to be thinned is completely immersed in the bionic weathering enzyme thinning agent solution and vibrated at a constant temperature of 60-120°C for 10-50 hours (which is related to the amount of thinning of the glass thickness). After the glass has been thinned to a certain thickness, it is removed and washed thoroughly with water.

[0024] For thick glass frit, it needs to be thinned multiple times, i.e., after thinning to a certain thickness in step 1, it is removed and placed in a fresh glass thinning agent solution for further thinning.

[0025] The plant raw materials of the bionic weathering enzyme include one or more of persimmon petiole, licorice, Chinese gallnut, astragalus membranaceus, catechu, ginseng root, pine branch, rice root, lichen, tea, Salvia miltiorrhiza, white fruit leaf, lychee root, kiwi root, rose root and quince root.

[0026] Bionic weathering enzyme composite glass thinning agent consists of pH adjuster C, bionic weathering enzyme, stabilizer, auxiliary agent and water.

[0027] The working temperature of the bionic weathering enzyme composite glass thinning agent is from room temperature to the boiling point of the solution (25-120℃).

[0028] Glass types that can be thinned are silicate glasses with silica as the main component, such as soda-lime glass, white plate glass, quartz glass, high borosilicate glass, and high aluminosilicate glass, with SiO2 content > 65%, CaO < 12%, MgO < 8%, and Fe2O3 < 5%.

[0029] The pH adjuster A includes one or a mixture of sodium / potassium bicarbonate, sodium / potassium carbonate, aqueous ammonia, lime, ethanolamine, citric acid and its salts, and tartaric acid and its salts.

[0030] The pH adjuster B includes one or a mixture of magnesium oxide, magnesium hydroxide, calcium hydroxide, calcium oxide, acetic acid and its salts, citric acid and its salts, phosphoric acid and its salts, and borax.

[0031] The pH adjuster C includes one or a mixture of sodium hydroxide, potassium hydroxide, calcium hydroxide, calcium oxide, aqueous ammonia, ethanolamine, diethanolamine, triethanolamine, trimethylamine, and triethylamine.

[0032] The stabilizer includes one or a mixture of benzoic acid and its salts, sorbic acid and its salts, diacetic acid and its salts, dithionous acid and its salts, hydroquinone, tert-butylhydroquinone, catechol, tert-butylcatechol, pyrogallol, gallic acid and its salts and esters, and (iso)ascorbic acid and its salts and esters.

[0033] Precipitant A includes one or a mixture of tartaric acid and its salts, malic acid and its salts, phthalic acid and its salts, citric acid and its salts, phosphoric acid and its salts, polyphosphoric acid and its salts, lactic acid and its salts, gluconic acid and its salts, and oxalic acid and its salts.

[0034] Precipitant B includes one or a mixture of ethanolamine, diethanolamine, triethanolamine, triethylamine, ethylenediamine, isopropylamine, tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrapropylammonium hydroxide, and tetrabutylammonium hydroxide.

[0035] The auxiliary agent in the glass thinning agent includes one or a mixture of citric acid and its salts, ethylenediaminetetraacetic acid and its salts, tartaric acid and its salts, potassium / sodium ferrocyanide, sodium / potassium sulfide, phosphoric acid and its salts, tripolyphosphoric acid and its salts, and hexametaphosphoric acid and its salts.

[0036] The present invention has the following advantages: (1) In conventional technology, ultra-thin flexible glass films are typically produced using molten glass drawing and fluoride etching. However, due to the process, the thickness of ultra-thin glass produced by the molten glass drawing method is typically 200 μm or more, and chemical thinning using fluoride is required. Fluoride is highly corrosive and toxic. The bionic weathering enzyme composite glass thinning agent used in this technology uses bionic weathering enzymes, which are less toxic and safer to use. (2) Conventional thinning techniques using fluorides tend to roughen the glass surface, requiring complex cleaning processes. Cleaning and subsequent tempering treatments are prone to damaging the glass and prevent continuous thinning. However, the bionic weathering enzyme glass thinning agent of the present invention allows for uniform and continuous dissolution of glass without causing surface roughness, enabling uniform and continuous thinning. By controlling the thinning time, ultra-thin glass of various thicknesses can be obtained, simplifying subsequent cleaning and increasing yield. In particular, ultra-thin flexible glass with a thickness of 20 μm can be manufactured with a minimum bending radius of only 0.35 mm and a surface roughness Ra of less than 10 nm. When pure glass is used, the visible light transmittance exceeds 90% and the hardness is the same as that of raw glass. [Brief explanation of the drawings]

[0037] [Figure 1] 1 is a flow chart of a method for manufacturing ultra-thin flexible glass using a bionic weathering enzyme composite glass thinning agent. [Figure 2] 1 is a flowchart of step S1 of a method for manufacturing ultra-thin flexible glass using a bionic weathering enzyme composite glass thinning agent. DETAILED DESCRIPTION OF THE INVENTION

[0038] Hereinafter, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0039] Example 1 As shown in Figure 1, the method for producing ultra-thin flexible glass using bionic weathering enzyme composite glass thinning agent includes the following steps:

[0040] S1. Extraction step of bionic weathering enzyme: The bionic weathering enzyme plant raw material is dissolved, the pH is adjusted, and the stability is increased. Then, it is boiled and kept warm, and then filtered to obtain a first solution. The pH of the first solution is adjusted, and the solution is precipitated. Then, it is filtered to obtain a first precipitate. Then, the pH of the first precipitate is adjusted, and the solution is precipitated. Then, it is filtered to obtain a second precipitate. The second precipitate is dried to obtain a bionic weathering enzyme solid.

[0041] The bionic weathering enzyme plant raw material is one or more of persimmon petiole, licorice, Chinese gallnut, Astragalus membranaceus, catechu, ginseng root, pine branch, rice root, lichen, tea, Salvia miltiorrhiza, white fruit leaf, lychee root, kiwi root, rose root, and quince root.

[0042] As shown in FIG. 2, step S1 includes the following steps:

[0043] S11, dissolution: 1 to 5 parts by weight of bionic weathering enzyme plant raw material is added to 20 parts by weight of water-ethanol mixed solvent, and then 0.1 to 3 parts by weight of pH adjuster A and 0.1 to 5 parts by weight of stabilizer are added, and after uniform stirring, the mixture is heated to boiling, and then kept at 100 to 120°C for 6 to 48 hours, and the plant residue is filtered to obtain the first solution.

[0044] The stabilizer is one or more of benzoic acid, benzoates, sorbic acid, sorbates, diacetic acid, diacetates, dithionite, dithionite, hydroquinone, tert-butylhydroquinone, catechol, tert-butylcatechol, pyrogallol, gallic acid, gallates, gallic acid esters, ascorbic acid, ascorbates, ascorbate esters, erythorbic acid, erythorbates, and erythorbate esters.

[0045] The water-ethanol mixed solvent is a solution with a mass percentage of 1:0.1 to 0.7.

[0046] In step S11, the pH adjuster A is one or more of sodium bicarbonate, potassium bicarbonate, sodium carbonate, potassium carbonate, aqueous ammonia, lime, ethanolamine, citric acid, citrate salts, tartaric acid, and tartrate salts.

[0047] The concentration of the ammonia water is 20 to 30%.

[0048] S12, first filtration: After the first solution of the solution is cooled to room temperature, 0.2 to 5 parts by weight of precipitant A and 0.1 to 3 parts by weight of pH adjuster B are added, and the solution is allowed to stand at room temperature for 2 to 12 hours, and then filtered to obtain a first precipitate.

[0049] The pH adjuster B is one or more of magnesium oxide, magnesium hydroxide, calcium hydroxide, calcium oxide, acetic acid, acetate salts, citric acid, citrate salts, phosphoric acid, phosphate salts, and borax.

[0050] Precipitant A is one or more of tartaric acid, tartrate salts, malic acid, malate salts, phthalic acid, phthalate salts, citric acid, citrate salts, phosphoric acid, phosphate salts, polyphosphoric acid, polyphosphate salts, lactic acid, lactate salts, gluconic acid, gluconate salts, oxalic acid, and oxalate salts.

[0051] S13, second filtration: 1 part by weight of the first precipitate is dissolved in 6-20 parts by weight of water, heated to 60-100°C, 0.1-2 parts by weight of precipitant B is added, and the mixture is left to stand for 2-12 hours, cooled, and then filtered to obtain the second precipitate. The second precipitate is dried to obtain the bionic weathering enzyme solid.

[0052] Precipitant B is one or more of ethanolamine, diethanolamine, triethanolamine, trimethylamine, triethylamine, ethylenediamine, isopropylamine, tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrapropylammonium hydroxide, and tetrabutylammonium hydroxide.

[0053] Tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrapropylammonium hydroxide, and tetrabutylammonium hydroxide are all aqueous solutions with a concentration of 40%.

[0054] S2. Preparation of bionic weathering enzyme glass thinning agent solution: Add 7 to 20 parts by weight of water, 0.1 to 2 parts by weight of stabilizer, 0.1 to 1 part by weight of pH adjuster C, and 0.1 to 1 part by weight of auxiliary agent to 1 part by weight of bionic weathering enzyme solid, and stir evenly to obtain bionic weathering enzyme glass thinning agent solution.

[0055] The pH adjuster C is one or more of sodium hydroxide, potassium hydroxide, calcium hydroxide, calcium oxide, aqueous ammonia, ethanolamine, diethanolamine, triethanolamine, and triethylamine.

[0056] The concentration of the ammonia water is 20 to 30%.

[0057] The auxiliary agent is one or more of citric acid, citrates, ethylenediaminetetraacetic acid, ethylenediaminetetraacetates, tartaric acid, tartrates, potassium ferrocyanide, potassium sodium ferrocyanide, sodium sulfide, potassium sulfide, phosphoric acid, phosphates, tripolyphosphoric acid, tripolyphosphates, hexametaphosphoric acid, and hexametaphosphates.

[0058] S3. Glass thinning: The glass to be thinned is completely immersed in a container containing bionic weathering enzyme glass thinning agent solution, and is vibrated at a constant temperature of 60-120°C for 10-50 hours. Then, it is taken out and washed thoroughly with water to obtain the thinned glass.

[0059] The glass to be thinned is a silicate glass with a mass percentage of SiO2 >65%, CaO <12%, MgO <8%, and Fe2O3 <5%.

[0060] The silicate glass is any one of soda-lime glass, white plate glass, quartz glass, high borosilicate glass, and high aluminosilicate glass.

[0061] The working temperature of the bionic weathering enzyme glass thinning agent solution is 25~120℃.

[0062] S4, Repeat thinning: Determine whether the thickness of the glass after thinning reaches the thinning target. If it does, the production of ultra-thin flexible glass is completed. If it does not, replace the bionic weathering enzyme glass thinning agent solution in the container of step S3 with unused bionic weathering enzyme glass thinning agent solution, and then repeat step S3.

[0063] Example 2 As shown in Figures 1 and 2, in the method for manufacturing ultra-thin flexible glass using a bionic weathering enzyme composite glass thinning agent, the glass material to be thinned is white plate glass, with an initial thickness of 180 μm and a size of 25*60 mm.

[0064] [1] Bionic Weathering Enzyme Extraction 1.5 parts by weight of licorice and 1 part by weight of rice root were powdered and added to 20 parts of a water-ethanol mixed solvent (1:0.2), followed by the addition of 0.2 parts of potassium carbonate, 0.9 parts of ethanolamine, and 0.1 parts of sodium erythorbate. The solution was boiled and then incubated at 100°C for 26 hours. The remaining plant residue was filtered to obtain a first solution. The first solution was cooled to room temperature, and 0.8 parts of calcium gluconate and 0.5 parts of borax were added to the first solution, which was then allowed to stand at room temperature for 3 hours and filtered to obtain a first precipitate. The first precipitate was dissolved in water at a mass ratio of 1:8, heated to 85°C, and then 1 part of ethanolamine was added. The mixture was allowed to stand for 6 hours, cooled, and filtered to obtain the second precipitate. After drying the second precipitate, a bionic weathering enzyme solid was obtained.

[0065] [2] Bionic Weathering Enzyme Glass Thinner Solution One part by weight of bionic weathering enzyme solid was placed in 9 parts by weight of water, and 0.7 parts by weight of tert-butylhydroquinone, 0.15 parts by weight of ammonia water (25% concentration), and 0.2 parts by weight of trisodium citrate were added to obtain a bionic weathering enzyme glass thinning agent solution.

[0066] [3] Glass thinning process The glass to be thinned is completely immersed in the bionic weathering enzyme glass thinning agent solution, shaken at a constant temperature of 95°C for 14 hours, and then removed and washed thoroughly with water to obtain the thinned glass. A shaker or mechanical device is used for the vibration.

[0067] The glass performance after thinning is as follows: thickness 25-27μm, in-plane thickness error <3μm, surface roughness Ra <5nm, visible light transmittance >90%, and minimum bending radius <1.5mm.

[0068] Example 3 As shown in Figure 1-2, in the method for manufacturing ultra-thin flexible glass using a bionic weathering enzyme composite glass thinning agent, the glass material to be thinned is high borosilicate glass, the initial thickness is 200 μm, and the size is 200*160 mm.

[0069] [1] Bionic Weathering Enzyme Extraction 1.5 parts by weight of pine branches, 0.6 parts of white fruit leaves, and 0.2 parts of persimmon petioles were powdered and added to 20 parts of a water-ethanol mixed solvent (1:0.1), followed by the addition of 1.5 parts of sodium bicarbonate and 0.2 parts of sodium dithionite. The solution was boiled and then kept at 100°C for 20 hours, after which the remaining plant residue was filtered. The solution was cooled to room temperature, and 0.8 parts of sodium tripolyphosphate and 0.8 parts of magnesium hydroxide were added to the solution, which was then allowed to stand at room temperature for 2 hours and filtered. The filtered solid was dissolved in water at a mass ratio of 1:16, heated to 90°C, and 0.5 parts of sodium hydroxide was added. The solution was allowed to stand for 4 hours, cooled, filtered, and the solid was dried to obtain a bionic weathering enzyme solid.

[0070] [2] Bionic Weathering Enzyme Glass Thinner Solution One part by weight of bionic weathering enzyme solid was added to 18 parts of water, and 1.5 parts of gallic acid, 0.5 parts of sodium hydroxide, and 0.6 parts of tartaric acid were added to obtain a bionic weathering enzyme glass thinning agent solution.

[0071] [3] Glass thinning process The glass to be thinned was completely immersed in the bionic weathering enzyme glass thinning agent solution, shaken at a constant temperature of 100°C for 18 hours, and then removed and washed thoroughly with water.

[0072] The glass performance after thinning is as follows: thickness 18-20μm, in-plane thickness error <3μm, surface roughness Ra <5nm, visible light transmittance >90%, and minimum bending radius <0.6mm.

[0073] Example 4 As shown in Figure 1-2, in the method for manufacturing ultra-thin flexible glass using a bionic weathering enzyme composite glass thinning agent, the material of the glass to be thinned is quartz glass, the initial thickness is 500 μm, and the size is 100*100 mm.

[0074] [1] Bionic Weathering Enzyme Extraction Four parts of Salvia miltiorrhiza were powdered and added to 20 parts of a water-ethanol mixed solvent (1:0.6), followed by the addition of 2 parts of calcium hydroxide and 0.5 parts of potassium sorbate. The solution was boiled and then incubated at 100°C for 21 hours, after which the remaining plant residue was filtered. The solution was cooled to room temperature, and 0.3 parts of potassium hydrogen phthalate, 1.2 parts of sodium acetate, and 0.2 parts of magnesium oxide were added to the solution, which was then allowed to stand at room temperature for 2 hours and filtered. The filtered solid was dissolved in water at a mass ratio of 1:10, heated to 95°C, and 1.2 parts of triethanolamine was added. The solution was allowed to stand for 3 hours, cooled, filtered, and the solid was dried to obtain a bionic weathering enzyme solid powder.

[0075] [2] Bionic Weathering Enzyme Glass Thinner Solution One part of bionic weathering enzyme solid was added to 13 parts of water, and 1 part of sodium benzoate, 0.6 parts of triethylamine, and 0.3 parts of sodium sulfide were added to obtain a bionic weathering enzyme glass thinning agent solution.

[0076] [3] Glass thinning process The glass to be thinned was completely immersed in the bionic weathering enzyme glass thinning agent solution, shaken at a constant temperature of 90°C for 24 hours, removed, replaced with new bionic weathering enzyme glass thinning agent solution, shaken at a constant temperature of 90°C for another 24 hours, and then removed and washed with water.

[0077] The glass performance after thinning is as follows: thickness 22-25μm, in-plane thickness error <3μm, surface roughness Ra <5nm, visible light transmittance >90%, and minimum bending radius <1.8mm.

[0078] The above are only preferred specific embodiments of the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art based on the technical solutions and inventive concepts of the present invention within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A bionic weathering enzyme extraction step S1 includes dissolving the bionic weathering enzyme plant material, adjusting the pH, increasing the stability, boiling, keeping warm, and filtering to obtain a first solution, adjusting the pH of the first solution, precipitating, and filtering to obtain a first precipitate, adjusting the pH of the first precipitate, precipitating, and filtering to obtain a second precipitate, and drying the second precipitate to obtain a bionic weathering enzyme solid; a bionic weathering enzyme glass thinning agent solution preparation step S2, in which 7 to 20 parts by weight of water, 0.1 to 2 parts by weight of a stabilizer, 0.1 to 1 part by weight of a pH adjuster C, and 0.1 to 1 part by weight of an auxiliary agent are added to 1 part by weight of the bionic weathering enzyme solid, and the mixture is stirred uniformly to obtain a bionic weathering enzyme glass thinning agent solution; and a glass thinning step S3, in which the glass to be thinned is completely immersed in a container containing the bionic weathering enzyme glass thinning agent solution, and is vibrated at a constant temperature of 60-120°C for 10-50 hours, and then taken out and washed thoroughly with water to obtain the thinned glass. Wherein, the bionic weathering enzyme plant raw material is selected from the combination of licorice and rice flour, the combination of white fruit leaf and persimmon petal, and Salvia miltiorrhiza; Step S1 1-5 weight parts of the bionic weathering enzyme plant raw material is added to 20 weight parts of water-ethanol mixed solvent, and then 0.1-3 weight parts of pH adjuster A and 0.1-5 weight parts of stabilizer are added, and the mixture is stirred uniformly, and then heated to boiling, and then kept at 100-120°C for 6-48 hours, and the plant residue is filtered to obtain the first solution; dissolving step S11; a first filtration step S12 in which the first solution is cooled to room temperature, and then 0.2 to 5 parts by weight of precipitant A and 0.1 to 3 parts by weight of pH adjuster B are added, the solution is allowed to stand at room temperature for 2 to 12 hours, and then filtered to obtain the first precipitate; a second filtration step S13, in which 1 part by weight of the first precipitate is dissolved in 6-20 parts by weight of water, heated to 60-100°C, and then 0.1-2 parts by weight of precipitant B is added, and the mixture is left to stand for 2-12 hours, cooled, and then filtered to obtain the second precipitate, and the second precipitate is dried to obtain the bionic weathering enzyme solid; the stabilizer in step S11 is one or more of benzoic acid, benzoates, sorbic acid, sorbates, diacetic acid, diacetates, dithionous acid, dithionites, hydroquinone, tert-butylhydroquinone, catechol, tert-butylcatechol, pyrogallol, gallic acid, gallates, gallic acid esters, ascorbic acid, ascorbates, ascorbate esters, erythorbic acid, erythorbic acid salts, and erythorbate esters; In step S11, the water-ethanol mixed solvent is a solution having a mass percentage of 1:0.1 to 0.7, In step S11, the pH adjuster A is one or more of sodium bicarbonate, potassium bicarbonate, sodium carbonate, potassium carbonate, ammonia water, lime, ethanolamine, citric acid, a citrate, tartaric acid, and a tartrate; The concentration of the ammonia water is 20 to 30%; In step S12, the pH adjuster B is one or more of magnesium oxide, magnesium hydroxide, calcium hydroxide, calcium oxide, acetic acid, acetate, citric acid, citrate, phosphoric acid, phosphate, and borax; In step S12, the precipitant A is one or more of tartaric acid, tartrate salts, malic acid, malate salts, phthalic acid, phthalate salts, citric acid, citrate salts, phosphoric acid, phosphate salts, polyphosphoric acid, polyphosphate salts, lactic acid, lactate salts, gluconic acid, gluconate salts, oxalic acid, and oxalate salts; In step S13, the precipitant B is one or more of ethanolamine, diethanolamine, triethanolamine, trimethylamine, triethylamine, ethylenediamine, isopropylamine, tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrapropylammonium hydroxide, and tetrabutylammonium hydroxide; A method for producing ultra-thin flexible glass using a bionic weathering enzyme composite glass thinning agent, in which tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrapropylammonium hydroxide and tetrabutylammonium hydroxide are all aqueous solutions with a concentration of 40%.

2. The method for producing ultra-thin flexible glass using a bionic weathering enzyme composite glass thinning agent as described in claim 1 further includes a repeated thinning step S4, in which it is determined whether the thickness of the glass after thinning reaches the thinning target, and if so, the production of ultra-thin flexible glass is completed, and if not, the bionic weathering enzyme glass thinning agent solution in the container of step S3 is replaced with unused bionic weathering enzyme glass thinning agent solution, and then step S3 is repeated.

3. The glass to be thinned in step S3 is SiO ２ Mass percentage >65%, CaO mass percentage <12%, MgO mass percentage <8%, Fe ２ O ３ a silicate glass with a mass percentage of <5%; the silicate glass is any one of soda-lime glass, white plate glass, quartz glass, high borosilicate glass, and high aluminosilicate glass; The method for manufacturing ultra-thin flexible glass using the bionic weathering enzyme composite glass thinning agent according to claim 1, wherein the temperature of the bionic weathering enzyme glass thinning agent solution is 25 to 120°C.

4. In step S2, the pH adjuster C is one or more of sodium hydroxide, potassium hydroxide, calcium hydroxide, calcium oxide, aqueous ammonia, ethanolamine, diethanolamine, triethanolamine, and triethylamine; 2. The method for manufacturing ultra-thin flexible glass using the bionic weathering enzyme composite glass thinning agent according to claim 1, wherein the concentration of ammonia water is 20-30%.

5. 2. The method for manufacturing ultra-thin flexible glass using a bionic weathering enzyme composite glass thinning agent according to claim 1, wherein in step S2, the auxiliary agent is one or more of citric acid, citrates, ethylenediaminetetraacetic acid, ethylenediaminetetraacetate salts, tartaric acid, tartrates, potassium ferrocyanide, potassium sodium ferrocyanide, sodium sulfide, potassium sulfide, phosphoric acid, phosphates, tripolyphosphates, tripolyphosphates, hexametaphosphoric acid, and hexametaphosphates.

6. 2. The method for producing ultra-thin flexible glass using a bionic weathering enzyme composite glass thinning agent according to claim 1, wherein the stabilizer in step S2 is one or more of benzoic acid, benzoates, sorbic acid, sorbates, diacetic acid, diacetates, dithionite, dithionite, hydroquinone, tert-butylhydroquinone, catechol, tert-butylcatechol, pyrogallol, gallic acid, gallates, gallic acid esters, ascorbic acid, ascorbates, ascorbate esters, erythorbic acid, erythorbic acid salts, and erythorbate esters.

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