Glass with a protective layer and method for producing the same

Abstract

The present application provides a kind of glass with protective layer and its preparation method.Glass with protective layer includes glass substrate and protective layer;Glass substrate has shielding area and light transmission area, shielding area is arranged around the light transmission area;Glass substrate includes shielding layer, shielding area is provided with the shielding layer, protective layer is at least partially located in the shielding area, and at least cover the shielding layer;The surface energy of the surface area of the glass substrate covered by the protective layer is greater than or equal to 70 dyne / cm.The glass with protective layer of the present application does not appear the attenuation of surface energy after long-term transportation, and the surface energy can still reach 70 dyne / cm or more, to ensure that no stain remains, so as to realize good cleaning effect.

Description

Technical Field

[0001] This invention relates to a glass with a protective layer and its preparation method, belonging to the field of glass technology. Background Technology

[0002] After long-distance transportation, glass surfaces often develop residual stains, leading to failures in water film testing and adhesion experiments. This indicates that existing glass surface treatment processes are inadequate for long-distance transport conditions. Current treatment methods mainly include two approaches: The first is felt-head polishing, which involves polishing the glass surface with a vibratory polisher. However, this method is inefficient, requiring more than 3 minutes per pane, and leaves felt debris on the surface, necessitating secondary cleaning. Even so, the glass still fails water film testing after long-distance transport. The second method is plasma treatment. While initially effective, increasing the surface energy to over 70 dyne / cm, the surface energy decays rapidly, dropping to around 40 dyne / cm after 2-3 days of transport, failing to meet the demands of long-distance transport.

[0003] The main reason for the aforementioned surface energy decay is that atoms or molecules on the solid surface become more stable by adsorbing other molecules or atoms from the surrounding environment. This adsorption process not only reduces surface instability but also lowers surface energy. Furthermore, if contaminants on the glass surface are not completely cleaned, they will gradually leach onto the glass surface during transportation, further exacerbating the problem. Therefore, it is necessary to protect the glass before transportation to clean contaminants generated during the glass production process and to form a protective film on the glass surface to prevent contamination by molecules or atoms from the surrounding environment. The coating formed on the glass surface by printing ink is generally porous, and contaminants easily adhere to the pores. Conventional cleaning can only treat the surface and cannot completely remove internal contaminants, which will lead to contaminants gradually seeping out and contaminating the glass during long-distance transportation.

[0004] Therefore, it is of great significance to develop a type of glass with a protective layer that does not degrade its surface after long-term transportation. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a glass with a protective layer and its preparation method, which does not experience degradation during long-term transportation and has a surface strength of over 70 dyne / cm.

[0006] To achieve the above objectives, in a first aspect, the present invention provides a glass with a protective layer comprising a glass substrate and a protective layer; The glass substrate has a shielding area and a light-transmitting area, and the shielding area is arranged around the light-transmitting area; The glass substrate includes a shielding layer, the shielding area is provided with the shielding layer, and the protective layer is at least partially located in the shielding area and at least covers the shielding layer; The surface energy of the surface area of ​​the glass substrate covered by the protective layer is greater than or equal to 70 dyne / cm.

[0007] According to a specific embodiment of the present invention, preferably, the surface energy of the surface area of ​​the glass substrate covered by the protective layer can be, for example, but not limited to, 70 dyne / cm, 75 dyne / cm, 80 dyne / cm, 85 dyne / cm, 90 dyne / cm, 95 dyne / cm, 100 dyne / cm, etc. CF: Cohesive Failure, that is, the failure state of the bond occurs from within the adhesive. Typically, the failure state of the present invention is not less than 75% CF, for example, but not limited to, 75% CF, 80% CF, 85% CF, 90% CF, 95% CF, 100% CF, etc.

[0008] According to a specific embodiment of the present invention, preferably, the protective layer is made of a glass protectant, which, by mass percentage, comprises the following components: 1%-4% surfactant solution, 5%-15% chelating agent, 0.1%-1% alkaline substance, and 80%-93.9% water. More preferably, the protective layer is made of a glass protectant, which, by mass percentage, comprises the following components: 1%-4% surfactant solution, 5%-15% chelating agent, 0.2%-0.5% alkaline substance, and 83%-91% water. Even more preferably, the protective layer is made of a glass protectant, which, by mass percentage, comprises the following components: 3%-4% surfactant solution, 7%-10% chelating agent, 0.2%-0.5% alkaline substance, and 85.5%-89.5% water.

[0009] According to a specific embodiment of the present invention, preferably, the surfactant solution comprises, by mass percentage: 25%-29% quaternary ammonium salt surfactant, 1%-3% acidic substance, 0.2%-0.4% additive, and 69.6%-73.8% water. More preferably, the surfactant solution comprises, by mass percentage: 25%-27% quaternary ammonium salt surfactant, 1%-2% acidic substance, 0.3%-0.4% additive, and 71%-73.6% water.

[0010] In the glass protectant of this invention, the amount of surfactant solution is controlled at 1%-4%. Using the surfactant solution of this invention can reduce the surface tension of the aqueous solution, enhance the solubility and flowability of the entire system, and, because the surfactant solution itself has a cleaning effect, enable all substances in the glass protectant to form effective contact with the object being cleaned, achieving the cleaning requirements. If the amount of surfactant solution is less than 1%, the surface tension of the cleaner is too high, preventing it from penetrating porous materials for cleaning, resulting in a poor cleaning effect; if the amount of surfactant solution is more than 4%, the cost will increase, leading to waste.

[0011] According to a specific embodiment of the present invention, preferably, the quaternary ammonium salt surfactant of the present invention has an HLB value of 15-18, for example, but not limited to 15, 16, 17, 18, etc.

[0012] This invention uses water as a solvent. When other components of the glass protectant react with contaminants, they can dissolve in water. During rinsing, these reaction products can be carried away with the water.

[0013] According to a specific embodiment of the present invention, preferably, the quaternary ammonium salt surfactant is selected from one or more combinations of tetradecyl dimethyl ammonium oxide, dodecyl trimethyl ammonium bromide, hexadecyl dimethyl benzyl ammonium chloride, hexadecyl trimethyl ammonium chloride, dodecyl dimethyl ammonium oxide, and tetradecyl trimethyl ammonium bromide, more preferably tetradecyl dimethyl ammonium oxide. The ratio of the diameter of the hydrophilic group to the diameter of the lipophilic group in the quaternary ammonium salt surfactant of the present invention determines the size of the "contaminant" particles that the formed micelles can encapsulate, and its chain length can effectively anchor oil stains, while the hydrophilic property ensures rapid spread in the system.

[0014] In the aforementioned glass protectants, the alkaline environment generated by the hydrolysis of chelating agents enables quaternary ammonium salt surfactants to be in a cationic state. The resulting ions can lower the critical micelle concentration (CMC), promote micelle formation, chelate metal ions, and disperse colloidal particles. Alkaline substances can participate in the saponification reaction, and the saponification products of oil stains can form micelles with quaternary ammonium salt surfactants. Acidic substances can prevent metal ions from causing corrosion on the glass surface and act as a buffer to stabilize the pH of the system.

[0015] According to a specific embodiment of the present invention, preferably, the acidic substance is selected from one or more combinations of citric acid, tartaric acid, malic acid, lactic acid, glycolic acid, and phosphoric acid.

[0016] According to a specific embodiment of the present invention, preferably, the chelating agent is selected from one or more combinations of potassium pyrophosphate, glycolic acid, tartaric acid, malonic acid, and ethylenediaminetetraacetic acid, more preferably potassium pyrophosphate. The chelating agent of the present invention can not only combine with metal ions to form stable complexes, but also combine with groups having opposite charges; for example, the pyrophosphate group is negatively charged and can attract the benzene ring of phthalate esters, which are partially positively charged. Phthalate esters are present in the production and transportation of products, such as in the packaging of glass products, and in the plastic edging and accessories adhered near the product surface. During this process, these substances slowly migrate to the glass surface. Utilizing the characteristic of chelating agents, that is, the specific chelating agent of the present invention immediately "captures" a specific substance upon contact, thereby forming a water-soluble complex. Therefore, the complex carrying various pollutants is carried away with water. Thus, the present invention utilizes chelating agents to clean contaminants within the pores of ink.

[0017] According to a specific embodiment of the present invention, preferably, the alkaline substance is selected from one or more combinations of potassium hydroxide, sodium hydroxide, sodium silicate, sodium acetate, potassium carbonate, trimethylamine, and triethylamine.

[0018] According to a specific embodiment of the present invention, preferably, the additive is selected from one or more combinations of N,N-dimethylhydroxylamine, ethylene glycol, propylene glycol, polyethylene glycol, sorbitol, and glycerin.

[0019] According to a specific embodiment of the present invention, preferably, the pH of the glass protectant is 5-9, more preferably, the pH of the glass protectant is 7-9. For example, it can be, but is not limited to, 5, 6, 7, 8, 9, etc.

[0020] According to a specific embodiment of the present invention, preferably, the glass cleaner is prepared by mixing a surfactant solution, a chelating agent, an alkaline substance, and water at 10-50 °C.

[0021] According to a specific embodiment of the present invention, preferably, the surfactant solution is prepared by mixing a quaternary ammonium salt surfactant, an acidic substance, an additive, and water.

[0022] According to a specific embodiment of the present invention, preferably, the surfactant solution contains, by mass percentage, 25-27% tetradecyl dimethyl ammonium oxide, 1-3% citric acid, 0.2-0.4% N,N-dimethylhydroxylamine, and the balance being water. More preferably, the surfactant solution contains 26-27% tetradecyl dimethyl ammonium oxide, 1-2% citric acid, 0.2-0.3% N,N-dimethylhydroxylamine, and the balance being water.

[0023] According to a specific embodiment of the present invention, preferably, after transportation, the surface energy of the surface area of ​​the glass substrate covered by the protective layer is greater than or equal to 70 dyne / cm.

[0024] According to a specific embodiment of the present invention, preferably, the transportation time is 8-12 weeks.

[0025] According to a specific embodiment of the present invention, preferably, the visible light transmittance of the shielding area is less than or equal to 30%, for example, but not limited to 30%, 25%, 20%, 15%, 10%, 5%, etc.

[0026] According to a specific embodiment of the present invention, preferably, the visible light transmittance of the light-transmitting area is greater than or equal to 70%, more preferably, the visible light transmittance of the light-transmitting area is greater than or equal to 80%, for example, but not limited to 70%, 75%, 80%, 85%, 90%, 95%, 100%, etc.

[0027] In a second aspect, the present invention also provides a method for preparing glass with a protective layer, wherein a glass protectant and a glass substrate are provided, the glass substrate having a shielding area and a light-transmitting area, the shielding area being disposed around the light-transmitting area, the glass substrate including a shielding layer, and the shielding area having the shielding layer. The glass protectant is applied at least to the shielded area of ​​the glass substrate and at least covers the shielding layer to form the glass with the protective layer described above.

[0028] According to a specific embodiment of the present invention, preferably, the coating pressure is greater than or equal to 10 N.

[0029] Thirdly, the present invention also provides a vehicle having the aforementioned glass with a protective layer.

[0030] Compared with the prior art, the present invention has the following beneficial effects: The glass with a protective layer of the present invention will not experience surface energy decay after long-term transportation, and its surface energy can still reach more than 70 dyne / cm, ensuring that no stains remain, thereby achieving a good cleaning effect, and the water film test results can still reach the qualified level. Attached Figure Description

[0031] Figure 1 This refers to the cleaning steps for the glass with a protective layer in Example 1.

[0032] Figure 2 The image shows the FITR diagram of the glass with a protective layer in Comparative Example 10.

[0033] Figure 3This is a FITR image of the glass with a protective layer in Example 2. Detailed Implementation

[0034] In order to provide a clearer understanding of the technical features, objectives and beneficial effects of the present invention, the technical solution of the present invention will now be described in detail below, but it should not be construed as limiting the scope of implementation of the present invention.

[0035] Example 1

[0036] This embodiment provides a glass with a protective layer and a method for transporting it.

[0037] (1) Glass protectant: The surfactant solution was prepared by mixing 27% tetradecyl dimethyl ammonium oxide, 1% citric acid, 0.4% N,N-dimethyl hydroxylamine, and 71.6% water by weight. Under stirring, 88.8% of the glass protectant by weight of deionized water and 8% of potassium pyrophosphate were dissolved at room temperature. Then, 3% of the above surfactant solution was slowly added, and finally 0.2% of potassium hydroxide was added to adjust the pH to 8-9 to obtain the glass protectant.

[0038] (2) Glass with protective layer and transportation: The above glass protectant was applied to the surface of the glass substrate by applying a pressure of 1.5 kPa using an auxiliary cleaning tool (the amount of coating was 40 grams per square meter). Then, the substrate was wiped with gauze soaked in deionized water, and the residual water was wiped off with gauze to obtain glass with a protective layer. After 12 weeks of transportation, the performance of the glass with the protective layer was tested, and the specific results are shown in Table 1.

[0039] like Figure 1 As shown in the diagram, the narrow edge of glass with a protective layer is generally more prone to contamination. To prevent secondary contamination during wiping, it is necessary to wipe in the direction specified in the diagram. That is, wipe the wide edge of the glass first, then wipe the side edge of the glass, and finally wipe the narrow edge of the glass. After wiping, wipe outwards from the glass and do not stay in the middle of the glass to prevent contamination residue from the wiping process.

[0040] Example 2

[0041] This embodiment provides a glass with a protective layer and a method for transporting it.

[0042] (1) Glass protectant: The surfactant solution was prepared by mixing 27% tetradecyl dimethyl ammonium oxide, 1% citric acid, 0.4% N,N-dimethyl hydroxylamine, and 71.6% water by weight. Under stirring, 86.7% of the glass protectant by weight of deionized water and 9% of potassium pyrophosphate were dissolved at room temperature. Then, 4% of the above surfactant solution was slowly added, and finally 0.3% of potassium hydroxide was added to adjust the pH to 8-9 to obtain the glass protectant.

[0043] (2) Glass with protective layer and transportation: The above-mentioned glass protectant was applied to the surface of the glass substrate by applying a pressure of 1.5 kPa using an auxiliary cleaning tool (the amount of coating was 40 grams per square meter). Then, the substrate was wiped with gauze soaked in deionized water, and the residual water was wiped off with gauze to obtain glass with a protective layer.

[0044] After 12 weeks of transportation, the performance of the glass with the protective layer was tested, and the specific results are shown in Table 1.

[0045] Example 3

[0046] This embodiment provides a glass with a protective layer and a method for transporting it.

[0047] The only difference from Example 1 is that, under stirring, 86.7% of the weight of the glass protectant, deionized water, and 10% of potassium pyrophosphate were stirred and dissolved at room temperature. Then, 3% of the above surfactant solution was slowly added, and finally 0.3% of potassium hydroxide was added to adjust the pH to 8-9 to obtain the glass protectant.

[0048] Example 4

[0049] This embodiment provides a glass with a protective layer and a method for transporting it.

[0050] The only difference from Example 1 is that, under stirring, 83.5% of the weight of the glass protectant, deionized water, and 15% of potassium pyrophosphate were stirred and dissolved at room temperature. Then, 1% of the above surfactant solution was slowly added, and finally 0.5% of potassium hydroxide was added to adjust the pH to 8-9 to obtain the glass protectant.

[0051] Example 5

[0052] This embodiment provides a glass with a protective layer and a method for transporting it.

[0053] The only difference from Example 1 is that, under stirring, 90.5% of the weight of the glass protectant, deionized water, and 5% of potassium pyrophosphate were stirred and dissolved at room temperature, then 4% of the above surfactant solution was slowly added, and finally 0.5% of potassium hydroxide was added to adjust the pH to 8-9 to obtain the glass protectant.

[0054] Example 6

[0055] This embodiment provides a glass with a protective layer and a method for transporting it.

[0056] The only difference from Example 1 is that: 25% tetradecyl dimethyl ammonium oxide, 1% citric acid, 0.4% N,N-dimethyl hydroxylamine, and 73.6% water by weight of the surfactant solution are mixed evenly to obtain the surfactant solution.

[0057] Example 7

[0058] This embodiment provides a glass with a protective layer and a method for transporting it.

[0059] The only difference from Example 1 is that: 29% tetradecyl dimethyl ammonium oxide, 1% citric acid, 0.4% N,N-dimethyl hydroxylamine, and 69.6% water by weight of the surfactant solution are mixed evenly to obtain the surfactant solution.

[0060] Example 8

[0061] This embodiment provides a glass with a protective layer and a method for transporting it.

[0062] The only difference from Example 1 is: The surfactant solution was prepared by mixing 14% dodecyl dimethyl ammonium oxide, 13% hexadecyl dimethyl benzyl ammonium chloride, 1% citric acid, 0.4% N,N-dimethyl hydroxylamine, and 71.6% water by weight.

[0063] Example 9

[0064] This embodiment provides a glass with a protective layer and a method for transporting it.

[0065] The only difference from Example 1 is: The surfactant solution was prepared by mixing 27% tetradecyl dimethyl ammonium oxide, 1% malic acid, 0.4% N,N-dimethyl hydroxylamine, and 71.6% water by weight.

[0066] Example 10

[0067] This embodiment provides a glass with a protective layer and a method for transporting it.

[0068] The only difference from Example 1 is: Dissolve 88.2% by weight of deionized water and 8% by weight of glycolic acid at room temperature by stirring. Then slowly add 3% of the above surfactant solution. Finally, add 0.8% potassium hydroxide to adjust the pH to 5-6 to obtain the glass protectant.

[0069] Comparative Example 1

[0070] This comparative example provides a glass with a protective layer and a method for transporting it.

[0071] The only difference from Example 1 is that sodium dodecylbenzenesulfonate (27% by weight of surfactant solution), citric acid (1%), N,N-dimethylhydroxylamine (0.4%), and water (71.6%) are mixed evenly to obtain the surfactant solution.

[0072] Comparative Example 2

[0073] This comparative example provides a glass with a protective layer and a method for transporting it.

[0074] The only difference from Example 1 is that: 27% hexadecyltrimethylammonium bromide, 1% citric acid, 0.4% N,N-dimethylhydroxylamine, and 71.6% water by weight of the surfactant solution are mixed evenly to obtain the surfactant solution.

[0075] Comparative Example 3

[0076] This comparative example provides a glass with a protective layer and a method for transporting it.

[0077] The only difference from Example 1 is that: polyethylene glycol (27% by weight), citric acid (1%), N,N-dimethylhydroxylamine (0.4%), and water (71.6%) are mixed evenly to obtain the surfactant solution.

[0078] Comparative Example 4

[0079] This comparative example provides a glass with a protective layer and a method for transporting it.

[0080] The only difference from Example 1 is that: lauryl dimethylamine oxide (27% by weight of surfactant solution), citric acid (1% by weight), N,N-dimethylhydroxylamine (0.4% by weight), and water (71.6% by weight) are mixed evenly to obtain surfactant solution.

[0081] Comparative Example 5

[0082] This comparative example provides a glass with a protective layer and a method for transporting it.

[0083] The only difference from Example 1 is: Under stirring, 85.8% of the glass protectant by weight of deionized water and 8% of potassium pyrophosphate were dissolved at 40 °C. Then, 6% of the above surfactant solution was slowly added, and finally 0.2% of potassium hydroxide was added to adjust the pH to 8-9 to obtain the glass protectant.

[0084] Comparative Example 6

[0085] This comparative example provides a glass with a protective layer and a method for transporting it.

[0086] The only difference from Example 1 is: Under stirring, 84.8% of the glass protectant by weight of deionized water and 8% of potassium pyrophosphate were dissolved at 40 °C. Then, 7% of the above surfactant solution was slowly added, and finally 0.2% of potassium hydroxide was added to adjust the pH to 8-9 to obtain the glass protectant.

[0087] Comparative Example 7

[0088] This comparative example provides a glass with a protective layer and a method for transporting it.

[0089] The only difference from Example 1 is: The surfactant solution is prepared by mixing 30% tetradecyl dimethyl ammonium oxide, 1% citric acid, 0.4% N,N-dimethyl hydroxylamine, and 68.6% water by weight.

[0090] Comparative Example 8

[0091] This comparative example provides a glass with a protective layer and a method for transporting it.

[0092] The only difference from Example 1 is: The surfactant solution was prepared by mixing tetradecyl dimethyl ammonium oxide (31% by weight), citric acid (1%), N,N-dimethyl hydroxylamine (0.4%), and water (67.6%).

[0093] Comparative Example 9

[0094] This comparative example provides a glass with a protective layer and a method for transporting it.

[0095] The only difference from Example 1 is: The surfactant solution was prepared by mixing tetradecyl dimethyl ammonium oxide (32% by weight), citric acid (1%), N,N-dimethyl hydroxylamine (0.4%), and water (66.6%).

[0096] Comparative Example 10

[0097] This comparative example provides a glass with a protective layer and a transportation method.

[0098] The difference from Example 1 is only that: Mix 33% cetyl dimethyl ammonium oxide, 1% citric acid, 0.4% N,N-dimethylhydroxylamine and 65.6% water by weight of the surfactant solution evenly to prepare the surfactant solution.

[0099] Figure 2 It is the FITR diagram of the glass with a protective layer in Comparative Example 10. As Figure 2 shown, when the glass with a protective layer is not cleaned with a glass protector, residues of plasticizers (phthalate pollution) are detected on the surface of the glass with a protective layer after transportation.

[0100] Figure 3 It is the FITR diagram of the glass with a protective layer in Example 2. As Figure 3 shown, when the glass with a protective layer is cleaned with a glass protector, no pollution is detected on the surface of the glass with a protective layer after transportation.

[0101] Test the glass with a protective layer in the above examples and comparative examples. The test method is as follows: (1) Water film test: Dip a sponge in deionized water and continuously apply it to the test surface. Let it stand at room temperature for 1 minute, and observe whether the water film is still in a continuous state. If so, it is determined that the water film test is qualified (the surface energy of the test surface is greater than 70 dyne / cm). If not, it is determined that the water film test is unqualified (there is a certain area on the test surface where the surface energy is less than 70 dyne / cm).

[0102] (2) Bonding performance test: Evaluate the bonding performance through a gluing experiment. After sea transportation (the temperature in the container is 10 - 60 °C, the humidity can reach up to 90% relative humidity, and the salinity is about 3%), the glass with a protective layer is subjected to surface treatment, gluing, curing, and peel strength test; clean the glass surface with isopropyl alcohol (IPA), coat sika 120 activator, and after drying, apply PU glue sika 250-FP7 (adhesive) on the surface. After curing for 7 days, conduct a knife experiment test at room temperature and after aging. Use a knife to cut the interface between the cured adhesive and the glass, and then observe what percentage of the total area of the adhesive adheres to the glass surface. CF: Cohesive Failure, cohesive failure, that is, the failure state of the bond occurs inside the adhesive. According to relevant standards, usually the failure state of this invention is not less than 75% CF. If it is not less than 75%, it is determined to be qualified.

[0103] Table 1

[0104] After cleaning the glass with the glass protectant of this invention, the surface energy of the glass will not decrease after long-term transportation, and the surface energy can still reach more than 70 dyn, and the water film test results are qualified.

[0105] Compared to Example 1, the glass protectant component of Comparative Example 1 uses sodium dodecylbenzenesulfonate, the glass protectant component of Comparative Example 2 uses hexadecyltrimethylammonium bromide, the glass protectant component of Comparative Example 3 uses polyethylene glycol, and the glass protectant component of Comparative Example 4 uses lauryl dimethylamine oxide. The quaternary ammonium salt surfactants of the present invention have an HLB value of 15-18, and tetradecyl dimethylammonium oxide has an HLB value of 15.7, making them more hydrophilic and easier to dissolve and clean after contact with contaminants. The HLB value of sodium dodecylbenzenesulfonate in Comparative Example 1 is 10.6, the HLB value of Comparative Example 3 is >18, and the HLB value of Comparative Example 4 is 8. In addition, the cleaning effect of Comparative Example 3 is poor. Therefore, the initial cleaning effects of Comparative Examples 1-4 are similar, but the surface energy decay rate is faster thereafter.

[0106] In Comparative Examples 5 and 6, the amount of surfactant solution in the glass protectant components was too high. Due to its large amount, it could not be effectively removed during the subsequent cleaning process, ultimately leading to adhesion failure. In Comparative Examples 7 to 10, the amount of tetradecyl dimethyl ammonium oxide in the glass protectant components was too high. Due to its large amount, the water content would be reduced accordingly, resulting in it not being effectively removed during the subsequent cleaning process, ultimately leading to adhesion failure.

[0107] Table 2 shows the CF (%) of the protective glass after sea transport for the examples and comparative examples.

[0108] Table 2

[0109] CF: Cohesive Failure, meaning that the failure of the bond occurs from within the adhesive itself. In Examples 1 and 2, the CF is 100%, indicating that the failure of the bond system is 100% cohesive failure, meaning that the failure occurs entirely within the adhesive, and no peeling occurs at the interface between the adhesive and the glass.

Claims

1. A type of glass with a protective layer, wherein, The glass with a protective layer includes a glass substrate and a protective layer; The glass substrate has a shielding area and a light-transmitting area, and the shielding area is arranged around the light-transmitting area; The glass substrate includes a shielding layer, the shielding area is provided with the shielding layer, and the protective layer is at least partially located in the shielding area and at least covers the shielding layer; The surface energy of the surface area of ​​the glass substrate covered by the protective layer is greater than or equal to 70 dyne / cm.

2. The glass with a protective layer according to claim 1, wherein, The protective layer is made of a glass protectant, which, by mass percentage, contains the following components: 1%-4% surfactant solution, 5%-15% chelating agent, 0.1%-1% alkaline substance, and 80%-93.9% water.

3. The glass with a protective layer according to claim 2, wherein, The surfactant solution comprises, by mass percentage, the following components: 25%-29% quaternary ammonium salt surfactant, 1%-3% acidic substances, 0.2%-0.4% additives, and 69.6%-73.8% water.

4. The glass with a protective layer according to claim 3, wherein, The quaternary ammonium salt activator is selected from one or more combinations of tetradecyl dimethyl ammonium oxide, dodecyl trimethyl ammonium bromide, hexadecyl dimethyl benzyl ammonium chloride, hexadecyl trimethyl ammonium chloride, dodecyl dimethyl ammonium oxide, and tetradecyl trimethyl ammonium bromide.

5. The glass with a protective layer according to claim 3, wherein, The HLB value of the quaternary ammonium salt surfactant is 15-18.

6. The glass with a protective layer according to claim 3, wherein, The acidic substance is selected from one or more of citric acid, tartaric acid, malic acid, lactic acid, glycolic acid, and phosphoric acid.

7. The glass with a protective layer according to claim 2, wherein, The chelating agent is selected from one or more of potassium pyrophosphate, glycolic acid, tartaric acid, malonic acid, and ethylenediaminetetraacetic acid.

8. The glass with a protective layer according to claim 2, wherein, The alkaline substance is selected from one or more of potassium hydroxide, sodium hydroxide, sodium silicate, sodium acetate, potassium carbonate, trimethylamine, and triethylamine.

9. The glass with a protective layer according to claim 3, wherein, The additive is selected from one or more of N,N-dimethylhydroxylamine, ethylene glycol, propylene glycol, polyethylene glycol, sorbitol, and glycerin.

10. The glass with a protective layer according to claim 2, wherein, The pH of the glass protectant is 5-9.

11. The glass with a protective layer according to claim 1, wherein, After transportation, the surface energy of the surface area of ​​the glass substrate covered by the protective layer is greater than or equal to 70 dyne / cm.

12. The glass with a protective layer according to claim 1, wherein, The visible light transmittance of the shielded area is less than or equal to 30%; and / or The visible light transmittance of the light-transmitting area is greater than or equal to 70%.

13. A method for preparing glass with a protective layer, wherein, A glass protectant and a glass substrate are provided, the glass substrate having a shielding area and a light-transmitting area, the shielding area being disposed around the light-transmitting area, the glass substrate including a shielding layer, and the shielding area having the shielding layer; The glass protectant is applied at least to the shielded area of ​​the glass substrate and at least covers the shielding layer to form the glass with a protective layer as described in any one of claims 1-12.

14. The preparation method according to claim 13, wherein, The coating pressure is greater than or equal to 10 N.

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