阅读说明：本技术 一种褪除盖板玻璃表面覆盖物的通用褪镀液及其褪除方法 (Universal deplating liquid for removing cover on glass surface of cover plate and deplating method thereof ) 是由 张葵涛 钟平洪 陈才旺 许华兵 刘呈贵 于 2019-10-12 设计创作，主要内容包括：本发明公开了一种用于褪除盖板玻璃表面覆盖物的通用褪镀液,褪镀液按质量分包括组分：无机碱：10-25％；有机碱：1-5％；有机溶剂：5-15％；缓蚀剂：1-5％；表面活性剂：0.5-5％；增溶剂：1-5％；活性剂：1-5％；螯合分散剂：1-10％,余量为水。本发明褪镀液通用性强,能够褪除盖板玻璃表面的各种膜层,包括如丝印油墨、AR膜、AF膜以及各种金属镀层；本发明褪镀液褪膜速度快,褪膜干净彻底。(The invention discloses a general deplating solution for removing a cover on the surface of cover plate glass, which comprises the following components in parts by mass: inorganic base: 10 to 25 percent; organic base: 1 to 5 percent; organic solvent: 5 to 15 percent; corrosion inhibitor: 1 to 5 percent; surfactant (b): 0.5 to 5 percent; solubilizer: 1 to 5 percent; active agent(s): 1 to 5 percent; chelating dispersant: 1-10% of water, and the balance of water. The stripping solution has strong universality, and can strip various film layers on the surface of the cover plate glass, such as silk-screen printing ink, AR films, AF films and various metal coatings; the stripping liquid has high stripping speed and the stripping liquid is clean and thorough.)

1. A general deplating solution for removing a cover on the surface of cover plate glass is characterized by comprising the following components in parts by mass:

inorganic base: 10 to 25 percent;

organic base: 1 to 5 percent;

organic solvent: 5 to 15 percent;

corrosion inhibitor: 1 to 5 percent;

surfactant (b): 0.5 to 5 percent;

solubilizer: 1 to 5 percent;

active agent(s): 1 to 5 percent;

chelating dispersant: 1-10% of water, and the balance of water.

2. The universal stripping solution for stripping cover glass surface coverings of claim 1 wherein the inorganic base comprises a combination of one or more of hydroxides or carbonates of alkali metals;

the inorganic base comprises one or more of potassium hydroxide, sodium hydroxide, potassium carbonate and sodium carbonate.

3. The universal stripping solution for stripping cover glass surface coverings of claim 1 wherein the organic base comprises a combination of one or more of monoethanolamine, diethanolamine, triethanolamine, isopropanolamine, diethylenetriamine and tetramethylammonium hydroxide.

4. The universal stripping solution for stripping glass surface coverings of cover plates according to claim 1, wherein the organic solvent comprises a combination of one or more of diethylene glycol butyl ether, diethylene glycol methyl ether, propylene glycol methyl ether, ethylene glycol ethyl ether, N-methyl pyrrolidone, benzyl alcohol, phenoxyethanol, diacetone alcohol, furfuryl alcohol, glycerol, ethylene glycol, isopropyl alcohol, and diethylene glycol.

5. The universal stripping solution for stripping glass surface coverings of cover plates according to claim 1, wherein the corrosion inhibitor comprises one or more of benzotriazole, mercaptobenzothiazole, imidazoline oleate, citric acid, tartaric acid, sodium metasilicate, potassium silicate, alkyl succinic anhydride, sebacic acid, and dodecanedioic acid.

6. The universal stripping solution for stripping glass surface coverings of cover plates according to claim 1, wherein the surfactant is a combination of one or more of fatty alcohol-polyoxyethylene ether, sodium dodecyl sulfate, fatty acid glyceride and alkyl glycoside.

7. The universal stripping solution for stripping cover glass surface coverings of claim 1 wherein the solubilizing agent is a combination of one or more of alkyl glycosides, sodium cumene sulfonate, sodium dimethyl benzene sulfonate and sodium cocoyl alanine.

8. The universal decoating solution for decoating cover glass surface coverings of claim 1, wherein the active agent is a combination of one or more of sodium fluoride, potassium fluoride, ammonium bifluoride, ammonium fluorosilicate and hydrogen peroxide.

9. The universal stripping solution for stripping glass surface coverings of cover plates according to claim 1, wherein the chelating dispersant is a combination of one or more of diethylenetriamine pentaacetic acid, polyacrylic acid, aminotrimethylene phosphonic acid, hydroxyethylidene diphosphonic acid, benzoic acid, nitrilotriacetic acid, citric acid, sodium gluconate, sodium potassium tartrate and polymaleic anhydride.

10. A deplating method of a general deplating solution is characterized by comprising the deplating solution of any one of claims 1 to 9, and the deplating method comprises the following steps:

1) placing the prepared deplating liquid in groove body equipment of a heating device, and enabling the temperature of the deplating liquid to be 70-100 ℃ through the heating device;

2) immersing the cover plate glass to be deplated into the deplating solution in the step 1 through a workpiece for 1-15 minutes until the film layer is completely removed, and taking out the cover plate glass to be deplated to spraying equipment;

3) the spraying equipment is provided with a spraying device, water sprayed out of the spraying device is normal-temperature pure water, and the pure water is sprayed out of the spraying device to carry out omnibearing spraying on the cover plate glass and the workpiece taken out in the step 2 for 1.5-3 minutes;

4) feeding the cover plate glass and the workpiece which are sprayed for the first time in the step 3 into a rinsing device;

5) the rinsing device is provided with an ultrasonic device, the ultrasonic device performs primary rinsing on the cover plate glass and the workpiece for 1.5-3 minutes at the normal temperature at the frequency of 40KHz, water used for rinsing is pure water, secondary rinsing is performed for 1.5-3 minutes after the primary rinsing is completed, and the cover plate glass and the workpiece are taken out and sent to the slow-pulling moving device after the secondary rinsing is completed;

6) the slow-pulling moving device is provided with a water storage tank and a heating device arranged on the water storage tank, water in the water storage tank is pure water, the heating device heats the pure water in the water storage tank to 60-80 ℃, the slow-pulling moving device slowly moves the cover plate glass and the workpiece in the pure water, and finally the cover plate glass and the workpiece are taken out to drying equipment;

7) and controlling the drying temperature of the drying equipment to be 80-105 ℃, drying the cover plate glass and the workpiece, taking out the cover plate glass and the workpiece, and unloading the cover plate glass from the workpiece to finish the deplating and cleaning of the cover plate glass.

Technical Field

The invention relates to the field of deinking agents, in particular to a universal deplating solution for removing a cover plate glass surface covering material and a deplating method thereof.

Background

Cover plate glass (English name: CoverLens or CoverGlass), also called as protective glass, is glass with various customized shapes made by CNC (computer numerical control) engraving, silk screen printing and other processes of a glass substrate, the surface of the glass substrate has the performances of scratch resistance, fingerprint resistance, anti-glare, anti-falling and the like after being made, the glass has the efficacy of protecting the glass and various performances, and the glass is widely applied to surface protection glass of related electronic products such as smart phones, tablet computers, notebook computers, cash dispensers, vehicle-mounted display devices and the like. In the manufacturing process of the cover glass, the surface thereof is covered with various film layers according to the requirements of various functionalities, such as various ink layers for silk printing, AR films (Anti-reflection films) for vacuum sputtering plating, AF films (Anti-fingerprint films) for evaporation plating or spray coating, metal plating layers for vacuum plating, and the like. When the related defective products are returned, the covering film layers need to be removed, so that the glass substrate can be recycled.

In the prior patents, only a deinking agent (or called as a deplating solution) for removing the silk-screen printing ink on the surface of the cover plate glass exists, and no relevant patent is related to the deplating of the AR film, the AF film and various metal coatings on the surface of the cover plate glass at present.

For example, patent application 201510876964.7 provides a deplating solution for rapidly removing screen printing protective ink on non-tempered glass and achieving the purpose of no scratch on the surface of the obtained white glass, wherein the deplating solution comprises the following components in percentage by mass in an aqueous solution: 6-8% of inorganic alkali potassium hydroxide and/or sodium hydroxide, 40-45% of benzyl alcohol, 1-5% of ethylene glycol ethyl ether and 4-8% of N-methyl pyrrolidone.

The patent application 201510477047.1 provides an environment-friendly optical glass deinking agent, which is an aqueous solution containing alkaline compounds, inorganic auxiliary agents, organic auxiliary agents and high-flash-point organic solvents, wherein the alkaline compounds are selected from one or two of hydroxides and alkali metal salts of alcohols; the inorganic auxiliary agent is selected from one or more of metal carbonate, silicate and borate; the organic auxiliary agent is an amine compound; the high flash point organic solvent is one or two selected from alcohol ether compounds, polyhydric alcohols and derivatives of the polyhydric alcohols. The glass deinking agent provided by the invention is mainly used for removing silk-screen printing ink on flat glass, touch screens and other glass; for the ink to be removed, the deinking agent has good removal effect on single-layer black ink, multi-layer white ink, light-blocking ink, UV ink, shielding ink and the like.

For example, patent application 201710863523.2 discloses a deplating solution for removing redundant coatings on glass and ceramics at normal temperature, which comprises a solvent A, a solvent B and a solvent C, wherein: the solvent A comprises the following components in percentage by mass in the solution: 15-30% of peroxide containing hydrogen peroxide, 65-94% of water and 1-5% of auxiliary agent; the solvent B comprises the following components in percentage by mass in an aqueous solution: 15-28% of alkali containing sodium hydroxide or potassium hydroxide, 1-10% of ETDA tetrasodium, 57-93% of water and 1-3% of an auxiliary agent; the solvent C comprises the following components in percentage by mass in an aqueous solution: 10-30% of potassium hydroxide or sodium hydroxide, 1-8% of sodium carbonate, 2-20% of sodium citrate, 1-5% of ETDA tetrasodium and 37-86% of water. By the deplating liquid treatment of the invention, the composite coatings of copper, silver, titanium, silicon, aluminum and the like on the cover plate can be removed on the premise of not damaging the structure and the appearance of the glass, the ceramic and the gem cover plate and the ink layer on the cover plate.

The invention provides a general stripping solution for stripping a cover plate glass surface covering and a stripping method thereof, which can thoroughly strip various film layers such as silk-screen printing ink, AR films, AF films and metal coatings covered on the cover plate glass surface at one time without being stripped for many times.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a universal deplating solution for removing a cover on the surface of cover plate glass and a deplating method thereof.

In order to solve the technical problem, the invention is realized by the following scheme: a general deplating solution for removing a cover on the surface of cover plate glass comprises the following components in parts by mass:

inorganic base: 10 to 25 percent;

organic base: 1 to 5 percent;

organic solvent: 5 to 15 percent;

corrosion inhibitor: 1 to 5 percent;

surfactant (b): 0.5 to 5 percent;

solubilizer: 1 to 5 percent;

active agent(s): 1 to 5 percent;

chelating dispersant: 1-10% of water, and the balance of water.

Further, the inorganic base comprises a combination of one or more of an alkali metal hydroxide or carbonate;

the inorganic base comprises one or more of potassium hydroxide, sodium hydroxide, potassium carbonate and sodium carbonate.

Further, the organic base comprises a combination of one or more of monoethanolamine, diethanolamine, triethanolamine, isopropanolamine, diethylenetriamine, and tetramethylammonium hydroxide.

Further, the organic solvent comprises one or more of diethylene glycol butyl ether, diethylene glycol methyl ether, propylene glycol methyl ether, ethylene glycol ethyl ether, N-methyl pyrrolidone, benzyl alcohol, phenoxyethanol, diacetone alcohol, furfuryl alcohol, glycerol, ethylene glycol, isopropyl alcohol, and diethylene glycol.

Further, the corrosion inhibitor comprises one or more of benzotriazole, mercapto benzothiazole, oleic acid imidazoline, citric acid, tartaric acid, sodium metasilicate, potassium silicate, alkyl succinic anhydride, sebacic acid and dodecanedioic acid.

Further, the surfactant is a composition of one or more of fatty alcohol-polyoxyethylene ether, sodium dodecyl sulfate, fatty glyceride and alkyl glycoside.

Further, the solubilizer is one or more of alkyl glycoside, sodium cumene sulfonate, sodium dimethyl benzene sulfonate and sodium cocoyl alanine.

Further, the active agent is one or more of sodium fluoride, potassium fluoride, ammonium bifluoride, ammonium fluorosilicate and hydrogen peroxide.

Further, the chelating dispersant is one or more of diethylenetriamine pentaacetic acid, polyacrylic acid, aminotrimethylene phosphonic acid, hydroxyethylidene diphosphonic acid, benzoic acid, nitrilotriacetic acid, citric acid, sodium gluconate, sodium potassium tartrate and polymaleic anhydride.

The invention relates to a deplating method of a universal deplating liquid, which comprises the following steps:

1) placing the prepared deplating liquid in groove body equipment of a heating device, and enabling the temperature of the deplating liquid to be 70-100 ℃ through the heating device;

2) immersing the cover plate glass to be deplated into the deplating solution in the step 1 through a workpiece for 1-15 minutes until the film layer is completely removed, and taking out the cover plate glass to be deplated to spraying equipment;

3) the spraying equipment is provided with a spraying device, water sprayed out of the spraying device is normal-temperature pure water, and the pure water is sprayed out of the spraying device to carry out omnibearing spraying on the cover plate glass and the workpiece taken out in the step 2 for 1.5-3 minutes;

4) sending the cover plate glass and the workpiece which are sprayed for the first time in the step 3 into a primary rinsing device;

5) the rinsing device is provided with an ultrasonic device, the ultrasonic device performs primary rinsing on the cover plate glass and the workpiece for 1.5-3 minutes at the normal temperature at the frequency of 40KHz, water used for rinsing is pure water, secondary rinsing is performed for 1.5-3 minutes after the primary rinsing is completed, and the cover plate glass and the workpiece are taken out and sent to the slow-pulling moving device after the secondary rinsing is completed;

6) the slow-pulling moving device is provided with a water storage tank and a heating device arranged on the water storage tank, water in the water storage tank is pure water, the heating device heats the pure water in the water storage tank to 60-80 ℃, the slow-pulling moving device slowly moves the cover plate glass and the workpiece in the pure water, and finally the cover plate glass and the workpiece are taken out to the drying equipment;

7) and controlling the drying temperature of the drying equipment to be 80-105 ℃, drying the cover plate glass and the workpiece, taking out the cover plate glass and the workpiece, and unloading the cover plate glass from the workpiece to finish the deplating and cleaning of the cover plate glass.

Compared with the prior art, the invention has the beneficial effects that:

1. the stripping solution has strong universality, and can strip various film layers on the surface of the cover plate glass, such as silk-screen printing ink, AR films, AF films and various metal coatings;

2. the film stripping speed of the stripping liquid is high, and the film stripping is clean and thorough;

3. the plating stripping liquid has small corrosivity on the cover plate glass substrate, and the glass substrate cannot be scratched;

4. the deplating liquid and the deplating method thereof adopt a heating and soaking mode, avoid the adoption of different deplating liquids and multiple film deplating processes aiming at different films at present, reduce the cost, improve the efficiency and are suitable for large-scale production.

5. The stripping solution can strip various film layers such as silk-screen printing ink, AR films, AF films and various metal coatings covered on the surface of cover plate glass, has good universality, high efficiency and small corrosivity on the cover plate glass substrate, can not cause the glass substrate to be scratched, has simple operation process, reduces the cost, improves the efficiency and is suitable for large-scale production.

Drawings

FIG. 1 shows the deplating step of the deplating method of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and thus the protection scope of the present invention is more clearly and clearly defined. It should be apparent that the described embodiments of the present invention are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.