Acidic pre-soak solution for post-polish cleaning of GG7 glass and methods of use thereof
By using a compound acidic pre-soaking solution of water-soluble organic carboxylic acids, water-soluble organic sulfonic acids, betaine compounds and polyols, the problem of difficult cleaning of surface dirt after GG7 glass polishing is solved, achieving efficient cleaning effect and glass safety, making it suitable for industrial applications.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUANGDONG WINDCAPE ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2023-11-02
- Publication Date
- 2026-07-21
AI Technical Summary
Existing technologies are insufficient to effectively clean the dirt on the surface of GG7 glass after polishing, especially residues such as cerium oxide polishing powder, and the commonly used acidic pre-soaking solution can easily cause the glass to turn blue.
A compound acidic pre-soaking solution consisting of water-soluble organic carboxylic acids, water-soluble organic sulfonic acids, betaine compounds, and polyols is used to achieve efficient cleaning by dispersing, peeling, and wetting, combined with the cationic properties of betaine to prevent acidic substances from corroding the glass.
It achieves efficient cleaning of dirt on the surface of GG7 glass, with a high cleaning yield. The glass does not turn blue after use, the ingredients are safe, and it is suitable for industrial production.
Smart Images
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Abstract
Description
Technical Field
[0001] This invention belongs to the field of glass post-polishing cleaning technology, and specifically relates to an acidic pre-soaking solution for cleaning GG7 glass after polishing and its application method. Background Technology
[0002] Dropping mobile phones and tablets can damage the glass. While improvements in glass technology have increased the number of drops these devices can withstand, scratches on the glass surface are still inevitable, affecting device usability. Unlike previous glass manufacturers that focused solely on improving drop or scratch resistance, aluminosilicate GG7 glass improves both aspects simultaneously. Therefore, GG7 glass has rapidly captured the smartphone and tablet market with its superior drop and scratch resistance.
[0003] The cover glass of mobile phones and tablets requires mechanical polishing during processing to remove scratches, burrs, and other imperfections from the glass surface, thereby maximizing the glass's light transmittance and refraction. Nano-cerium oxide polishing powder possesses advantages such as strong cutting ability, high polishing efficiency, good polishing quality, and long lifespan, making it extremely important in the field of glass mechanical polishing. After polishing, a layer of cerium oxide polishing powder, grinding wheel debris, glass substrate powder, and other contaminants will remain on the glass surface. These contaminants mainly remain on the glass workpiece through mechanical adsorption, intermolecular adsorption, and electrostatic adsorption. Glass with contaminant surfaces must be thoroughly cleaned before screen printing and lamination.
[0004] Currently, post-polishing cleaning solutions for glass mainly include using alkaline agents alone and pre-soaking in acid followed by alkaline cleaning. Alkaline cleaning alone prevents the glass from turning blue, but it's not thorough, leading to poor screen printing or coating later. Commonly used acidic pre-soaking solutions, such as citric acid, oxalic acid, and strong inorganic acids (sulfuric acid, phosphoric acid, hydrochloric acid), can clean the glass thoroughly after soaking with an alkaline agent, but this can cause GG7 glass to turn blue.
[0005] To meet the needs of cleaning and glass safety, there is an urgent need to find a solution that is both safe for glass and can effectively clean dirt from the glass surface. Summary of the Invention
[0006] In order to overcome the shortcomings and deficiencies of the prior art, the primary objective of this invention is to provide an acidic pre-soaking solution for cleaning GG7 glass after polishing.
[0007] The acidic pre-soaking solution of this invention, when used in combination with commonly used alkaline agents, exhibits excellent cleaning effects. It can effectively clean dirt from polished glass surfaces, achieving a high cleaning yield. Furthermore, it is safe for GG7 glass, prevents the glass from turning blue after use, has a long service life, is composed of safe ingredients, is easy to prepare, and is suitable for industrial production.
[0008] Another object of the present invention is to provide a method for using the above-mentioned acidic pre-soaking solution.
[0009] The objective of this invention is achieved through the following solution:
[0010] An acidic pre-soaking solution for cleaning GG7 glass after polishing comprises the following components by mass percentage: 1-5% water-soluble organic carboxylic acid, 1-5% water-soluble organic sulfonic acid, 0.5-3% betaine compounds, 2-5% polyols, and the balance being water.
[0011] Furthermore, the water-soluble organic carboxylic acid may include at least one of lactic acid, acetic acid, formic acid, propionic acid, malic acid, glycolic acid, etc.
[0012] Furthermore, the water-soluble organic sulfonic acid may include at least one of aminosulfonic acid, methanesulfonic acid, p-toluenesulfonic acid, dodecylbenzenesulfonic acid, etc.
[0013] Furthermore, the betaine compounds may include at least one of lauryl hydroxypropyl sulfonyl betaine, cocoyl hydroxypropyl sulfonyl betaine, lauryl amide hydroxypropyl sulfonyl betaine, oleamide propyl betaine, dodecyl phosphate betaine, lauryl amide propyl betaine, octadecyl phosphate betaine, stearyl phosphate betaine, and hexadecyl phosphate betaine.
[0014] Furthermore, the polyol may include at least one of glycerol, sorbitol, ethylene glycol, diethylene glycol, pentaerythritol, xylitol, etc.
[0015] At room temperature, the acidic pre-soaking solution for cleaning GG7 glass after polishing can be obtained by mixing the above components in proportion.
[0016] The acidic pre-soaking solution of this invention, when used in combination with commonly used alkaline agents, has excellent cleaning effect. It can clean dirt from the polished glass surface with a high cleaning yield and is safe for GG7 glass. The glass does not turn blue after use and it can be applied to cleaning GG7 glass after polishing. It has a long service life, safe ingredients, is easy to prepare, and is suitable for industrial production.
[0017] Specifically, the present invention also provides a method for using the above-mentioned acidic pre-soaking solution. After diluting the acidic pre-soaking solution of the present invention with water, the solution is placed into the workpiece to be cleaned and soaked at room temperature for 2-5 minutes. The workpiece is then removed and directly added to an alkaline agent for cleaning.
[0018] Furthermore, the diluted concentration can be 5-10 wt%.
[0019] The acidic pre-soaking solution of the present invention is convenient to use, has a short soaking time, and when used in combination with alkaline agents for cleaning, it achieves a high cleaning yield, a long service life, safe ingredients, and is easy to prepare, thus meeting the needs of environmentally friendly and safe production.
[0020] Compared with the prior art, the present invention has the following advantages and beneficial effects:
[0021] (1) The acidic pre-soaking solution of the present invention, through the rational screening of each component, adopts a highly efficient compound of water-soluble organic carboxylic acids, water-soluble organic sulfonic acids, betaine compounds, polyols, and water. Among them, the compound of organic carboxylic acids and organic sulfonic acids has the effect of dispersing and peeling off dirt on the substrate surface, making it easier for dirt to detach from the substrate surface; the polyols all have the effect of wetting and moisturizing, which can prevent water evaporation from causing an increase in acid concentration on the glass surface, maintain the acid concentration, and prevent corrosion; betaine compounds are amphoteric surfactants, which exhibit cationic characteristics under acidic conditions. On the one hand, the cations readily combine with the negative charge on the glass surface, thereby blocking the corrosion of the glass by acidic substances. On the other hand, the carboxyl groups in betaine are negatively charged and will repel the negatively charged organic carboxylic acids and organic sulfonic acids, further increasing the contact distance between the acid and the glass surface, thereby blocking the corrosion of the glass by acidic substances. The compound of each component can achieve a synergistic effect, thereby achieving a highly efficient cleaning and protection effect.
[0022] (2) The acidic pre-soaking solution of the present invention is easy to use, has a short soaking time, and can be used with alkaline agents for cleaning, resulting in a high cleaning yield and long service life. At the same time, it is safe for GG7 glass substrates and the glass does not turn blue after use.
[0023] (3) The acidic pre-soaking solution for cleaning after GG7 glass polishing of the present invention has safe components, is easy to prepare, and meets the needs of environmentally friendly and safe production. Detailed Implementation
[0024] The present invention will be further described in detail below with reference to embodiments, but the implementation of the present invention is not limited thereto. Unless otherwise specified, all materials involved in the following embodiments are commercially available. Unless otherwise specified, all methods described are conventional methods. The workpieces used in the following embodiments are all polished GG7 glass workpieces. Any commercially available alkaline cleaning agent can be used, such as WIN-18 or WIN-188 from Guangdong Shanzhifeng Environmental Protection Technology Co., Ltd.
[0025] The acidic pre-soaking solution for cleaning GG7 glass after polishing of the present invention combines the components into a complete whole, and achieves excellent comprehensive performance through the synergistic effect of the components. This makes the cleaning agent have excellent cleaning effect, high cleaning yield, long service life, and excellent protective effect. It will not cause the GG7 glass substrate to turn blue after cleaning. The composition is simple, easy to prepare, and suitable for industrial production.
[0026] Example 1
[0027] An acidic pre-soaking solution for cleaning after GG7 glass polishing comprises the following components and their mass percentages: 1% lactic acid, 3% aminosulfonic acid, 1% oleamidopropyl betaine, 3% glycerol, and the balance being water.
[0028] The above components were mixed to obtain an acidic pre-soaking solution for cleaning after GG7 glass polishing. The acidic pre-soaking solution was added to the cleaning tank and diluted with water to an 8wt% concentration. 500 workpieces to be cleaned were then placed in the tank and soaked at room temperature for 3 minutes. The workpieces were then removed and directly placed in 8wt% WIN-18 solution, ultrasonically treated at 45℃ for 6 minutes, rinsed until no chemical residue remained, and dried at 100℃. The workpiece surface was cleaned, and the glass substrate showed no bluing or corrosion. The results are shown in Table 1.
[0029] Example 2
[0030] A component and its mass percentage of an acidic pre-soaking solution for cleaning after GG7 glass polishing: 1% lactic acid, 3% malic acid, 1% dodecylbenzenesulfonic acid, 1% stearyl phosphate betaine, 5% pentaerythritol, with the balance being water.
[0031] The above components were mixed to obtain an acidic pre-soaking solution for cleaning after GG7 glass polishing. The acidic pre-soaking solution was added to the cleaning tank and diluted with water to a 5wt% concentration. 500 workpieces to be cleaned were then placed in the tank and soaked at room temperature for 4 minutes. The workpieces were then removed and directly placed in 8wt% WIN-188 solution, ultrasonicated at 45℃ for 6 minutes, rinsed until no chemical residue remained, and dried at 100℃. The workpiece surface was cleaned, and the glass substrate showed no bluing or corrosion. The results are shown in Table 1.
[0032] Example 3
[0033] An acidic pre-soaking solution for cleaning after GG7 glass polishing comprises the following components and their mass percentages: formic acid 3%, methanesulfonic acid 1%, laurylamide hydroxypropyl sulfobetaine 2%, pentaerythritol 5%, and the balance being water.
[0034] The above components were mixed to obtain an acidic pre-soaking solution for cleaning after GG7 glass polishing. The acidic pre-soaking solution was added to the cleaning tank and diluted with water to a 10wt% concentration. 500 workpieces to be cleaned were then placed in the tank and soaked at room temperature for 5 minutes. The workpieces were then removed and directly placed in 8wt% WIN-188 solution, ultrasonically treated at 45℃ for 8 minutes, rinsed until no chemical residue remained, and dried at 100℃. The workpiece surface was cleaned, and the glass substrate showed no bluing or corrosion. The results are shown in Table 1.
[0035] Example 4
[0036] An acidic pre-soaking solution for cleaning after GG7 glass polishing comprises the following components and their mass percentages: glycolic acid 4%, methanesulfonic acid 1%, p-toluenesulfonic acid 3%, laurylamide hydroxypropyl sulfobetaine 3%, diethylene glycol 5%, and the balance being water.
[0037] The above components were mixed to obtain an acidic pre-soaking solution for cleaning after GG7 glass polishing. The acidic pre-soaking solution was added to the cleaning tank and diluted with water to a 5wt% concentration. 500 workpieces to be cleaned were then placed in the tank and soaked at room temperature for 5 minutes. The workpieces were then removed and directly placed in 8wt% WIN-188 solution, ultrasonicated at 45℃ for 6 minutes, rinsed until no chemical residue remained, and dried at 100℃. The workpiece surface was cleaned, and the glass substrate showed no bluing or corrosion. The results are shown in Table 1.
[0038] Example 5
[0039] An acidic pre-soaking solution for cleaning after GG7 glass polishing comprises the following components and their mass percentages: glycolic acid 4%, p-toluenesulfonic acid 3%, cocoyl hydroxypropyl sulfobetaine 3%, xylitol 2%, and the balance being water.
[0040] The above components were mixed to obtain an acidic pre-soaking solution for cleaning after GG7 glass polishing. The acidic pre-soaking solution was added to the cleaning tank and diluted with water to an 8wt% concentration. 500 workpieces to be cleaned were then placed in the tank and soaked at room temperature for 5 minutes. The workpieces were then removed and directly placed in 8wt% WIN-188 solution, ultrasonically treated at 45℃ for 6 minutes, rinsed until no chemical residue remained, and dried at 100℃. The workpiece surface was cleaned, and the glass substrate showed no bluing or corrosion. The results are shown in Table 1.
[0041] Comparative Example 1
[0042] An acidic pre-soaking solution composition and its mass percentage: 4% citric acid, with the balance being water.
[0043] The above components were mixed to obtain an acidic pre-soaking solution. This acidic pre-soaking solution was added to the cleaning tank and diluted with water to a 5 wt% concentration. 500 workpieces to be cleaned were then placed in the tank and soaked at room temperature for 4 minutes. The workpieces were then removed and directly placed in 8 wt% WIN-188 solution, ultrasonically cleaned at 45°C for 6 minutes, rinsed until no chemical residue remained, and dried at 100°C. The surface dirt on the workpieces was cleaned, and the glass substrate showed a distinct bluish tint. The results are shown in Table 1.
[0044] Comparative Example 2
[0045] An acidic pre-soaking solution comprises the following components and their mass percentages: glycolic acid 4%, p-toluenesulfonic acid 3%, xylitol 2%, and the balance being water.
[0046] The above components were mixed to obtain an acidic pre-soaking solution. This acidic pre-soaking solution was added to a cleaning tank and diluted with water to an 8 wt% concentration. 500 workpieces to be cleaned were then placed in the tank and soaked at room temperature for 5 minutes. The workpieces were then removed and directly placed in 8 wt% WIN-188 solution, sonicated at 45°C for 6 minutes, rinsed until no chemical residue remained, and dried at 100°C. The surface dirt on the workpieces was cleaned, and the glass substrate showed a distinct bluish tint. The results are shown in Table 1.
[0047] Comparative Example 3
[0048] An acidic pre-soaking solution comprises the following components and their mass percentages: glycolic acid 4%, p-toluenesulfonic acid 3%, xylitol 2%, and the balance being water.
[0049] The above components were mixed to obtain an acidic pre-soaking solution. This acidic pre-soaking solution was added to the cleaning tank and diluted with water to an 8wt% concentration. 500 workpieces (polished GG4 glass) were then placed in the tank and soaked at room temperature for 5 minutes. The workpieces were then removed and directly placed in 8wt% WIN-188 solution, ultrasonicated at 45℃ for 6 minutes, rinsed until no chemical residue remained, and dried at 100℃. The workpiece surface was cleaned, and the glass substrate showed no bluing or corrosion. The results are shown in Table 1.
[0050] Comparative Example 4
[0051] An acidic pre-soaking solution comprises the following components and their mass percentages: glycolic acid 1%, cocoyl hydroxypropyl sulfobetaine 3%, xylitol 2%, and the remainder is water.
[0052] The above components were mixed to obtain an acidic pre-soaking solution. This acidic pre-soaking solution was added to the cleaning tank and diluted with water to an 8 wt% concentration. 500 workpieces to be cleaned were then placed in the tank and soaked at room temperature for 5 minutes. The workpieces were then removed and directly placed in 8 wt% WIN-188 solution, ultrasonically treated at 45°C for 6 minutes, rinsed until no chemical residue remained, and dried at 100°C. Even if the workpiece surface was not thoroughly cleaned, the glass substrate did not turn blue or show corrosion. The results are shown in Table 1.
[0053] Comparative Example 5
[0054] An acidic pre-soaking solution comprises the following components and their mass percentages: formic acid 3%, methanesulfonic acid 1%, laurylamide hydroxypropyl sulfobetaine 2%, and the remainder is water.
[0055] The above components were mixed to obtain an acidic pre-soaking solution. This acidic pre-soaking solution was added to the cleaning tank and diluted with water to a 10 wt% solution. 500 workpieces to be cleaned were then placed in the tank and soaked at room temperature for 5 minutes. The workpieces were then removed and directly placed in 8 wt% WIN-188 solution, ultrasonically cleaned at 45°C for 8 minutes, rinsed until no chemical residue remained, and dried at 100°C. The workpiece surface was cleaned, and the glass substrate showed a slight bluish tint. The results are shown in Table 1.
[0056] Comparative Example 6
[0057] An acidic pre-soaking solution comprises the following components and their mass percentages: formic acid 3%, methanesulfonic acid 1%, laurylamide hydroxypropyl sulfobetaine 2%, and the remainder is water.
[0058] The above components were mixed to obtain an acidic pre-soaking solution. This acidic pre-soaking solution was added to the cleaning tank and diluted with water to a 10 wt% concentration. 500 workpieces (polished GG4 glass) were then placed in the tank and soaked at room temperature for 5 minutes. The workpieces were then removed and placed directly into 8 wt% WIN-188 solution, ultrasonicated at 45°C for 8 minutes, rinsed until no chemical residue remained, and dried at 100°C. The workpiece surface was cleaned, and the glass substrate showed no bluing or corrosion. The results are shown in Table 1.
[0059] Table 1 Cleaning effect
[0060]
[0061]
[0062] As shown in Table 1, the acidic pre-soaking solution of the present invention, through the rational screening of each component, adopts a highly efficient compound of water-soluble organic carboxylic acids, water-soluble organic sulfonic acids, betaine compounds, polyols, and water. Among them, the compound of organic carboxylic acids and organic sulfonic acids has the effect of dispersing and peeling off dirt on the substrate surface, making it easier for dirt to detach from the substrate surface. The polyols all have the effect of wetting and moisturizing, which can prevent the increase of acid concentration on the glass surface due to water evaporation and prevent corrosion. Betaine is an amphoteric surfactant. Under acidic conditions, it exhibits cationic characteristics. On the one hand, the cations readily combine with the negative charge on the glass surface, thereby blocking the corrosion of the glass by acidic substances. On the other hand, the carboxyl groups in betaine are negatively charged and will repel the negatively charged organic carboxylic acids and organic sulfonic acids due to like charges, further increasing the contact distance between the acid and the glass surface, thereby blocking the corrosion of the glass by acidic substances. The compound of each component can achieve a synergistic effect, thereby achieving a highly efficient cleaning agent protection effect. The acidic pre-soaking solution of this invention is convenient to use, requires a short soaking time, and, when used in conjunction with alkaline agents for cleaning, achieves a high cleaning yield and long service life. It is also safe for GG7 glass substrates, preventing the glass from turning blue after use. The acidic pre-soaking solution for cleaning GG7 glass after polishing is safe in composition, easy to prepare, and meets the needs of environmentally friendly and safe production.
[0063] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.
Claims
1. An acidic pre-soaking solution for cleaning GG7 glass after polishing, characterized in that... It includes the following components by mass percentage: 1-5% water-soluble organic carboxylic acids, 1-5% water-soluble organic sulfonic acids, 0.5-3% betaine compounds, 2-5% polyols, and the balance being water; The water-soluble organic carboxylic acids include at least one of lactic acid, formic acid, malic acid, and glycolic acid; the water-soluble organic sulfonic acids include at least one of aminosulfonic acid, methanesulfonic acid, p-toluenesulfonic acid, and dodecylbenzenesulfonic acid; the betaine compounds include at least one of cocoyl hydroxypropyl sulfonyl betaine, laurylamide hydroxypropyl sulfonyl betaine, oleamide propyl betaine, and stearyl phosphate betaine; the polyols include at least one of glycerol, sorbitol, ethylene glycol, diethylene glycol, pentaerythritol, and xylitol.
2. A method for preparing the acidic pre-soaking solution for cleaning GG7 glass after polishing as described in claim 1, characterized in that... The components are mixed in proportion.
3. The application of the acidic pre-soaking solution for cleaning GG7 glass after polishing as described in claim 1 in the cleaning of GG7 glass after polishing.
4. A method of using the acidic pre-soaking solution for cleaning GG7 glass after polishing as described in claim 1, characterized in that... The process includes the following steps: diluting the acidic pre-soaking solution for cleaning GG7 glass after polishing with water as described in claim 1, immersing the workpiece to be cleaned in it at room temperature for 2-5 minutes, and then removing the workpiece and directly adding an alkaline agent for cleaning.
5. The method of use according to claim 4, characterized in that: The diluted concentration is 5-10 wt%.