CN114671624A - Treatment process of flexible glass with high impact resistance - Google Patents
Treatment process of flexible glass with high impact resistance Download PDFInfo
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- CN114671624A CN114671624A CN202210500840.9A CN202210500840A CN114671624A CN 114671624 A CN114671624 A CN 114671624A CN 202210500840 A CN202210500840 A CN 202210500840A CN 114671624 A CN114671624 A CN 114671624A
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- 239000011521 glass Substances 0.000 title claims abstract description 109
- 238000000034 method Methods 0.000 title claims abstract description 46
- 230000008569 process Effects 0.000 title claims abstract description 43
- 238000005530 etching Methods 0.000 claims abstract description 58
- 238000005452 bending Methods 0.000 claims abstract description 36
- 239000000126 substance Substances 0.000 claims abstract description 23
- 238000005507 spraying Methods 0.000 claims abstract description 18
- 239000002253 acid Substances 0.000 claims abstract description 17
- 238000004140 cleaning Methods 0.000 claims abstract description 17
- 238000007639 printing Methods 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims abstract description 11
- 238000003698 laser cutting Methods 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 7
- 238000005520 cutting process Methods 0.000 claims abstract description 6
- 239000000758 substrate Substances 0.000 claims abstract description 6
- 239000002699 waste material Substances 0.000 claims abstract description 5
- 239000000047 product Substances 0.000 claims description 14
- 238000005496 tempering Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 8
- 238000012216 screening Methods 0.000 claims description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000005342 ion exchange Methods 0.000 claims description 6
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical compound [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 claims description 6
- 229910001414 potassium ion Inorganic materials 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 6
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 3
- 239000003153 chemical reaction reagent Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000003085 diluting agent Substances 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 230000003746 surface roughness Effects 0.000 claims description 3
- 239000005341 toughened glass Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000012466 permeate Substances 0.000 claims description 2
- 230000008439 repair process Effects 0.000 claims description 2
- 239000007921 spray Substances 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 description 4
- 238000003486 chemical etching Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C15/00—Surface treatment of glass, not in the form of fibres or filaments, by etching
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/02—Tempering or quenching glass products using liquid
- C03B27/03—Tempering or quenching glass products using liquid the liquid being a molten metal or a molten salt
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C23/00—Other surface treatment of glass not in the form of fibres or filaments
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C23/00—Other surface treatment of glass not in the form of fibres or filaments
- C03C23/0075—Cleaning of glass
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
The invention discloses a treatment process of flexible glass with high impact resistance, which comprises the following steps: 1) cutting the glass substrate with the thickness of 100-400 mu m by laser cutting; 2) utilizing heat-resistant, acid-proof and washable printing ink to screen-print a pattern on the surface of the glass to form a bending area; 3) etching the bending area of the silk-screen pattern by adopting a chemical spraying mode, effectively removing waste materials in the pattern area, forming uniform holes in the bending area, and rotating the glass in the spraying and etching process; 4) cleaning to remove ink, and drying; 5) carrying out chemical toughening treatment on the glass, carrying out surface etching treatment after the chemical toughening treatment, and finally cleaning and drying the finished product. The hole shape is processed by adopting silk-screen acid-resistant printing ink and different types of spray etching, a rotating process is added in the etching process to ensure that the glass powder is effectively removed, the quality is stable, and then the bending and impact strength of the glass are improved by a chemical toughening and surface etching process.
Description
Technical Field
The invention relates to the technical field of flexible glass, in particular to a treatment process of flexible glass with high impact resistance.
Background
With the rapid development of flexible display technology and the upgrading of electronic products, foldable, stretchable and rollable flexible display products gradually enter the field of view of consumers. However, under the trend of development of thinner and portable flexible display products, higher requirements are also put on the thinning of the outer cover plate, and when the cover plate of the flexible display folding product is made of Ultra-Thin Glass (UTG) with the thickness thinned to less than 100 μm, the Glass has flexible bending capability, but the impact resistance to the outside is poor due to the reduction of the thickness of the Glass, and the reliability and stability of the product are reduced. The flexible display product is popular with consumer markets and many mobile phone users because the flexible display product simultaneously considers the portability of the foldable mobile phone and the large-screen using effect of the ipad.
The conventional flexible ultrathin glass cover plate needs to meet the foldability, and the thickness of the glass is controlled to be 30-70 mu m by thinning the glass, so that the impact strength and the scratch resistance of the glass cover plate become poorer along with the reduction of the plate thickness. However, the treatment by adopting the glass with the thickness of 100-; although the hole digging of the bending area can be completed by adopting the processes of acid-proof film coating, laser cutting and chemical etching to realize the bending of the glass, the acid-proof film is a high polymer material, and the energy in the laser cutting process can lead the edge of the acid-proof film to generate certain deformation, so that the adhesiveness of the acid-proof film on the surface of the glass is poor, and the sawtooth appears at the edge of the hole of the falling area of the acid-proof film in the etching process, even the glass between the hole and the hole is completely etched, thereby influencing the bending performance of the glass; in addition, the wet and hot environment of the chemical etching solution can also damage the adhesive force of the acid-proof film, the yield of glass etching products is influenced, and simultaneously, glass powder generated in the top spraying etching process is gathered in the holes and is difficult to remove, so that the problems of difficult etching perforation, inconsistent shapes in the holes and the like are caused.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a treatment process of flexible glass with high impact resistance, which effectively improves the bending and impact resistance of the glass and has stable quality.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the treatment process of the flexible glass with high impact resistance comprises the following steps:
1) cutting the glass substrate with the thickness of 100-400 mu m by laser cutting;
2) utilizing heat-resistant, acid-proof and washable printing ink to screen-print a pattern on the surface of the glass to form a bending area;
3) etching the bending area of the silk-screen pattern by adopting a chemical spraying mode, effectively removing waste materials in the pattern area, forming uniform holes in the bending area, and rotating the glass in the spraying and etching process;
4) cleaning to remove ink, and drying;
5) carrying out chemical toughening treatment on the glass, carrying out surface etching treatment after the chemical toughening treatment, and finally cleaning and drying the finished product.
Further:
the laser cutting adopts picosecond laser cutting, and the cutting power range is controlled to be 5-10 w.
And 2), silk-screening high-temperature-resistant acid-proof ink on the surface of the glass, silk-screening the ink on the whole surface of a non-bending area, and silk-screening hole patterns on the bending area.
In the step 2), the formula of the ink is 90-95% of the ink, 5-10% of the curing agent and 10-15% of the diluent.
In the step 3), the acid etching rate is 1-4 μm/min, the acid liquid temperature is 30-40 ℃, the spraying flow rate is 500-1000ppm, the setting frame for bearing the glass is rotated every 200-400s in each etching process, the pore-forming reaction process of the bending area gradually permeates from two sides to the middle, and the fluosilicic acid generated by the reaction of the glass powder and the hydrofluoric acid in the etching process is prevented from being accumulated in pores to influence the subsequent etching.
And in the step 4), ultrasonic cleaning is carried out to remove acid liquor after etching is finished, then an alkali liquor cleaning reagent is adopted to clean the printing ink, ultrasonic cleaning is carried out again after the printing ink is removed, and drying treatment is carried out at the temperature of 60-80 ℃ after cleaning is finished.
In the step 5), the chemical tempering is mainly a process of performing sodium-potassium ion exchange under a high-temperature condition, and the surface strength and the flexibility of the glass are improved by utilizing the extrusion effect generated by the volume difference of the sodium-potassium ion exchange and the sodium-potassium ion exchange; firstly, putting glass into a preheating furnace for heating, wherein the preheating temperature is 370-400 ℃, putting the glass into a chemical tempering tank, enabling the temperature of the glass to be close to that of molten salt liquid, and tempering the glass immersed into the molten salt liquid at 380-410 ℃ for 30-90 min; the stress value range of the toughened glass is 500-900MPa, and the depth of the stress layer is 8-20 μm.
In the step 5), the surface etching is mainly to carry out surface micro-etching repair treatment on the toughened finished glass, the surface etching amount is 4-8 μm, the surface etching rate is 0.5-0.8 μm/min, and the surface roughness of the glass is ensured to be 0.24-0.30 μm.
Compared with the prior art, the invention has the following advantages: the flexible glass with high impact resistance is reasonable in processing technology design, the hole shapes are processed by adopting silk-screen acid-resistant printing ink and different types of spray etching, the glass powder is effectively removed by adding a rotary technology in the etching process, the quality is stable, and the bending and impact strength of the glass are improved by chemical tempering and surface etching technologies.
Drawings
The contents of the description and the references in the drawings are briefly described as follows:
FIG. 1 is a flow chart of the glass bending zone processing of the present invention.
FIG. 2 is a schematic diagram of a spray etching method according to the present invention.
FIG. 3 is a schematic view of a spray etching spin via process of the present invention.
FIG. 4 is a schematic view of the shape of the bending region of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.
As shown in fig. 1 to 4, the process for treating the flexible glass with high impact resistance comprises the following steps:
1) cutting the glass substrate with the thickness of 100-400 mu m by laser cutting;
2) the method comprises the following steps of (1) screen-printing a pattern on the surface of glass by using heat-resistant, acid-proof and washable ink to form a bending area, wherein the formula of the ink is 90-95% of the ink, 5-10% of a curing agent and 10-15% of a diluent;
3) etching the bending area of the silk-screen pattern by adopting a chemical spraying mode, effectively removing waste materials in the pattern area, forming uniform holes in the bending area, and rotating the glass in the spraying and etching process;
4) cleaning to remove ink, and drying;
5) carrying out chemical toughening treatment on the glass, carrying out surface etching treatment after the chemical toughening treatment, and finally cleaning and drying the finished product.
The process selects 100-micron glass with the plate thickness and 400 mu m, and holes are punched in the set flexible display cover plate bending area in a spraying etching mode, so that the stress of the glass bending area is weakened, and the performance of the glass is strengthened, so that the bending and impact resistance of the glass are improved. The flexible bending glass processed by the method can be used for a protective cover plate of a flexible folding mobile phone and is expected to be used for a large-scale display product terminal.
In order to solve the problem of instability of an acid-proof film in the etching process, the invention firstly designs and processes a silk-screen plate with hole patterns, then silk-screen high-temperature-resistant acid-proof ink on the surface of glass, silk-screen ink on the whole surface of a non-bending area and silk-screen hole patterns in a bending area, and etch the glass by introducing an acid etching mode of bottom spraying and side spraying to make hole patterns in the bending area, and simultaneously introduces a timing rotating device in the etching process, so that glass powder in the etching process can be effectively removed, and the uniformity of a pattern area and the shape and size consistency of holes in the pattern area are ensured.
The picosecond laser cutting is adopted to cut the glass substrate, the glass substrate is not limited by the glass material and size, the capability of processing special-shaped glass (including an R angle) is realized, and the edge breakage of the glass can be effectively controlled to be less than 10 mu m. The thickness of the glass plate selected by the invention is between 100-; and (3) placing the silk-screen net plate with the bent glass pattern on the surface of the glass, matching the silk-screen pattern with the designed pattern of the glass, and silk-screening heat-resistant and acid-resistant ink on the surface of the glass by using a silk-screen machine.
The chemical etching adopts a spray acid etching mode, the acid etching rate is 1-4 mu m/min, the acid liquor temperature is 30-40 ℃, the spray flow rate is 1000ppm, the spray mode comprises three modes of top spraying, side spraying and bottom spraying (figure 2), the setting frame is rotated at intervals of 200-400s in each etching process, the specific time is determined according to the plate thickness, the hole forming reaction process of the bending area gradually penetrates from two sides to the middle (as shown in figure 3), and the fluosilicic acid generated by the reaction of the glass powder and the hydrofluoric acid in the etching process is prevented from being gathered in pores to influence the subsequent etching; after etching is finished, ultrasonically cleaning a sample to remove acid liquor, then cleaning printing ink by adopting an alkali liquor cleaning reagent, ultrasonically cleaning again after the printing ink is removed, drying at the temperature of 60-80 ℃ after cleaning is finished, and then carrying out chemical toughening, wherein the chemical toughening mainly comprises the process of carrying out sodium-potassium ion exchange at high temperature, and the extrusion effect generated by the volume difference of the two is utilized to improve the surface strength and the flexibility of the glass; firstly, the perforated glass is placed into a preheating furnace to be heated, the preheating temperature is 370-400 ℃, then the glass is placed into a chemical tempering tank, the temperature of the non-uniform-thickness glass is close to that of molten salt liquid, the temperature of the non-uniform-thickness glass immersed into the molten salt liquid is 380-410 ℃, and the tempering time is 30-90 min. The stress value range of the toughened glass is 500-900MPa, and the depth of the stress layer is 8-20 μm.
The surface etching is mainly to carry out surface micro-etching treatment on the toughened finished glass, and mainly aims to solve the problems of poor quality generated in the process of manufacturing, amplified defects after toughening and the like; the surface etching amount is 4-8 μm, the surface etching rate is 0.5-0.8 μm/min, the surface roughness of the glass is ensured to be 0.24-0.30 μm, the surface strength of the glass is improved, and finally, the finished product is cleaned and dried by ultrasonic cleaning to obtain the finished product.
The invention has no limitation on the overall dimension of the glass processed by the high-impact-strength flexible glass spraying and thinning mode, and the glass is not limited to cover plate glass for foldable display equipment such as a folding mobile phone, a folding notebook computer and the like, and can effectively solve the problems of CPI crease and low UTG strength by using the rigidity of the glass. The manufacturing method of the microporous bent glass mainly utilizes printing ink to screen a glass pattern area, then removes waste materials in the pattern area through different spray etching modes, then ensures the bending performance and the impact strength of the glass through chemical tempering, and finally removes surface microcracks through chemical surface strengthening to improve the glass strength.
The invention is described above with reference to the accompanying drawings, it is obvious that the specific implementation of the invention is not limited by the above-mentioned manner, and it is within the scope of the invention to adopt various insubstantial modifications of the inventive concept and solution, or to apply the inventive concept and solution directly to other applications without modification.
Claims (8)
1. A treatment process of flexible glass with high impact resistance is characterized in that: the treatment process comprises the following steps:
1) cutting the glass substrate with the thickness of 100-400 mu m by adopting laser cutting;
2) utilizing heat-resistant, acid-proof and washable printing ink to screen-print a pattern on the surface of the glass to form a bending area;
3) etching the bending area of the silk-screen pattern by adopting a chemical spraying mode, effectively removing waste materials in the pattern area, forming uniform holes in the bending area, and rotating the glass in the spraying and etching process;
4) cleaning to remove ink, and drying;
5) carrying out chemical toughening treatment on the glass, carrying out surface etching treatment after the chemical toughening treatment, and finally cleaning and drying the finished product.
2. The process for treating a flexible glass having high impact resistance according to claim 1, wherein: the laser cutting adopts picosecond laser cutting, and the cutting power range is controlled to be 5-10 w.
3. The process for treating a flexible glass having high impact resistance according to claim 1, wherein: and 2), silk-screening high-temperature-resistant acid-proof ink on the surface of the glass, silk-screening the ink on the whole surface of a non-bending area, and silk-screening hole patterns on the bending area.
4. The process for treating a flexible glass having high impact resistance according to claim 1, wherein: in the step 2), the formula of the ink is 90-95% of the ink, 5-10% of the curing agent and 10-15% of the diluent.
5. The process for treating a flexible glass having high impact resistance according to claim 1, wherein: in the step 3), the acid etching rate is 1-4 μm/min, the acid liquid temperature is 30-40 ℃, the spraying flow rate is 500-1000ppm, the setting frame for bearing the glass is rotated every 200-400s in each etching process, the pore-forming reaction process of the bending area gradually permeates from two sides to the middle, and the fluosilicic acid generated by the reaction of the glass powder and the hydrofluoric acid in the etching process is prevented from being accumulated in pores to influence the subsequent etching.
6. The process for treating a flexible glass having high impact resistance according to claim 1, wherein: and in the step 4), ultrasonic cleaning is carried out to remove acid liquor after etching is finished, then an alkali liquor cleaning reagent is adopted to clean the printing ink, ultrasonic cleaning is carried out again after the printing ink is removed, and drying treatment is carried out at the temperature of 60-80 ℃ after cleaning is finished.
7. The process for treating a flexible glass having high impact resistance according to claim 1, wherein: in the step 5), the chemical tempering mainly comprises a sodium-potassium ion exchange process under a high-temperature condition, and the surface strength and the flexibility of the glass are improved by utilizing an extrusion effect generated by the volume difference of the sodium-potassium ion exchange process and the glass; firstly, putting glass into a preheating furnace for heating, wherein the preheating temperature is 370-400 ℃, putting the glass into a chemical tempering tank, enabling the temperature of the glass to be close to that of molten salt liquid, and tempering the glass immersed into the molten salt liquid at 380-410 ℃ for 30-90 min; the stress value range of the toughened glass is 500-900MPa, and the depth of the stress layer is 8-20 μm.
8. The process for treating a flexible glass having high impact resistance according to claim 1, wherein: in the step 5), the surface etching is mainly to carry out surface micro-etching repair treatment on the toughened finished glass, the surface etching amount is 4-8 μm, the surface etching rate is 0.5-0.8 μm/min, and the surface roughness of the glass is ensured to be 0.24-0.30 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210500840.9A CN114671624A (en) | 2022-05-09 | 2022-05-09 | Treatment process of flexible glass with high impact resistance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210500840.9A CN114671624A (en) | 2022-05-09 | 2022-05-09 | Treatment process of flexible glass with high impact resistance |
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| CN114671624A true CN114671624A (en) | 2022-06-28 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115417583A (en) * | 2022-09-05 | 2022-12-02 | 河北光兴半导体技术有限公司 | Foldable glass and preparation method thereof |
| CN115448586A (en) * | 2022-10-27 | 2022-12-09 | 芜湖东信光电科技有限公司 | Foldable glass and preparation method thereof |
| CN115490431A (en) * | 2022-09-13 | 2022-12-20 | 深圳市信濠光电科技股份有限公司 | AG etching vacancy-avoiding step-free processing method and glass product |
| CN115636594A (en) * | 2022-10-27 | 2023-01-24 | 芜湖东信光电科技有限公司 | Microporous foldable glass and preparation method thereof |
| CN116040953A (en) * | 2022-10-27 | 2023-05-02 | 芜湖东信光电科技有限公司 | Flexible foldable glass and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115636594A (en) * | 2022-10-27 | 2023-01-24 | 芜湖东信光电科技有限公司 | Microporous foldable glass and preparation method thereof |
| CN116040953A (en) * | 2022-10-27 | 2023-05-02 | 芜湖东信光电科技有限公司 | Flexible foldable glass and preparation method thereof |
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