CN115124249B - Fluorite-shaped fingerprint-resistant and flashing-effect etching molding process for glass substrate - Google Patents
Fluorite-shaped fingerprint-resistant and flashing-effect etching molding process for glass substrate Download PDFInfo
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- CN115124249B CN115124249B CN202210065388.8A CN202210065388A CN115124249B CN 115124249 B CN115124249 B CN 115124249B CN 202210065388 A CN202210065388 A CN 202210065388A CN 115124249 B CN115124249 B CN 115124249B
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- Prior art keywords
- glass substrate
- fluorite
- etching
- etching solution
- parts
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- 239000011521 glass Substances 0.000 title claims abstract description 82
- 239000000758 substrate Substances 0.000 title claims abstract description 75
- 238000005530 etching Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000008569 process Effects 0.000 title claims abstract description 25
- 238000000465 moulding Methods 0.000 title claims abstract description 8
- 239000000243 solution Substances 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 230000000694 effects Effects 0.000 claims abstract description 18
- 239000013078 crystal Substances 0.000 claims abstract description 16
- 239000011259 mixed solution Substances 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 13
- 238000004140 cleaning Methods 0.000 claims abstract description 12
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 11
- 239000010436 fluorite Substances 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 150000004673 fluoride salts Chemical class 0.000 claims abstract description 10
- 229920000881 Modified starch Polymers 0.000 claims abstract description 9
- 239000004368 Modified starch Substances 0.000 claims abstract description 9
- 235000019426 modified starch Nutrition 0.000 claims abstract description 9
- 150000007522 mineralic acids Chemical class 0.000 claims abstract description 8
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract description 6
- 238000005498 polishing Methods 0.000 claims abstract description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 5
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 5
- MIMUSZHMZBJBPO-UHFFFAOYSA-N 6-methoxy-8-nitroquinoline Chemical compound N1=CC=CC2=CC(OC)=CC([N+]([O-])=O)=C21 MIMUSZHMZBJBPO-UHFFFAOYSA-N 0.000 claims description 4
- 235000013024 sodium fluoride Nutrition 0.000 claims description 4
- 239000011775 sodium fluoride Substances 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 4
- 238000011056 performance test Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000004069 differentiation Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 210000002268 wool Anatomy 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000011837 pasties Nutrition 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000000635 electron micrograph Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000005337 ground glass Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
Abstract
The invention relates to the technical field of glass deep processing, and discloses a fluorite-shaped fingerprint-resistant and flashing-effect etching molding process for a glass substrate, which comprises the following steps of: s1, preparing etching solution: adding fluoride salt into inorganic acid, and uniformly mixing to obtain mixed solution; uniformly mixing modified starch and sulfate to obtain powder; adding the powder and the mixed solution into water successively under stirring, and then standing and curing to obtain etching solution; s2, cleaning the surface of the glass substrate to be frosted for the first time by using clear water, and protecting the surface of the glass substrate which does not need to be frosted; s3, placing the glass substrate into a frosting device, and frosting the surface of the glass substrate for 40-300 seconds by using the etching solution prepared in the step S1; s4, placing the glass substrate etched in the step S3 into a conventional polishing solution for 3-10 minutes; and S5, cleaning the surface of the polished glass substrate with clear water for the second time to obtain a finished product. By forming fluorite crystals on the surface of the glass, fingerprint resistance and sparkling effect are achieved.
Description
Technical Field
The invention relates to the technical field of glass deep processing, in particular to a fluorite-shaped fingerprint-resistant and flash-effect etching molding process for a glass substrate.
Background
With the development of smart phones, people pay more attention to the attractive appearance and holding experience of the mobile phones, and more mobile phone manufacturers begin to convert the back cover material of the mobile phones into glass material. The back cover made of glass can atomize the surface of glass by using chemical etching liquid to mask the glass substrate in the production process while improving the signal receiving capability of the mobile phone, so as to achieve a certain fingerprint printing resisting effect.
In the prior art, although the fingerprint-proof effect on the glass substrate is maintained, the surface of the glass substrate is single and is not attractive enough, so that the difference of finished products is not large and the requirements of partial consumers cannot be met. In order to solve the above problems, improvements to the existing processes are necessary.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a fluorite-shaped fingerprint-proof and flashing-effect etching molding process for a glass substrate.
The technical scheme adopted for solving the technical problems is as follows: a fluorite-shaped fingerprint-proof and flashing effect etching molding process for a glass substrate comprises the following steps:
s1, preparing etching solution: adding fluoride salt into inorganic acid, and uniformly mixing to obtain mixed solution; uniformly mixing modified starch and sulfate to obtain powder; adding the powder and the mixed solution into water successively under stirring, and then standing and curing to obtain etching solution;
s2, cleaning the surface of the glass substrate to be frosted for the first time by using clear water, and protecting the surface of the glass substrate which does not need to be frosted;
s3, placing the glass substrate into a frosting device, and frosting the surface of the glass substrate for 40-300 seconds by using the etching solution prepared in the step S1;
s4, placing the glass substrate etched in the step S3 into a conventional polishing solution for 3-10 minutes;
and S5, cleaning the surface of the polished glass substrate with clear water for the second time to obtain a finished product.
The idea of the invention is as follows: adding the powder obtained after mixing the modified starch and the sulfate into water to form pasty particles, uniformly distributing the pasty particles in the water, and adding an etching effective mixed solution formed by combining inorganic acid and fluoride salt to prepare the etching solution. In the etching process, paste particles are attached to the surface of a glass substrate, so that the surface of the glass substrate attached by the paste particles is covered and protected, and the surface of the glass substrate which is not covered and protected is etched by the effective components in the etching solution, so that fluorite crystals are uniformly distributed on the surface of the glass substrate, and the grains of finger fingerprints are dispersed as much as possible through the fluorite crystals, thereby realizing the fingerprint printing resisting effect; the fluorite-shaped crystal is of a multi-surface structure, and the surface of the treated glass substrate is in sunlight or lamplight, so that the fluorite-shaped crystal of the multi-surface structure refracts light on one hand, and reflects the light in different directions on the other hand, and the flashing effect and differentiation are realized.
Further, the etching solution comprises the following components in parts by weight: 15-45 parts of fluoride salt, 3-5 parts of sulfate, 0.5-2.5 parts of modified starch, 40-50 parts of inorganic acid and 10-20 parts of water.
Further, the fluoride salt includes one or both of ammonium bifluoride and sodium fluoride.
Further, the sulfate salt includes ammonium sulfate.
Further, the inorganic acid includes hydrochloric acid or sulfuric acid.
Further, in the step S1, the curing time is 24 hours, and the stirring is carried out every 3 hours in the curing process, so that the etching solution is more uniform.
Further, in S3, the temperature of the etching solution is kept at 25-30 ℃ during the frosting, and the temperature difference of the etching solution is controlled within 3%.
Furthermore, after the forming process is adopted to sand the surface of the glass substrate, fluorite crystals with fingerprint printing resistance and flashing effect are uniformly distributed on the surface of the glass substrate.
The beneficial effects of the invention are as follows: the grains of the finger fingerprints are dispersed as much as possible through fluorite crystallization, so that the fingerprint printing resisting effect is realized; the fluorite-shaped crystal is of a multi-surface structure, and the surface of the treated glass substrate is in sunlight or lamplight, so that the fluorite-shaped crystal of the multi-surface structure refracts light on one hand, and reflects the light in different directions on the other hand, and the flashing effect and differentiation are realized.
Drawings
FIG. 1 is an electron microscope image of a batch 1 glass substrate surface according to a second embodiment of the present invention;
FIG. 2 is an electron micrograph of a surface of a batch 2 glass substrate according to a second embodiment of the present invention.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings. The description of these embodiments is provided to assist understanding of the present invention, but is not intended to limit the present invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1
S1, preparing etching solution: adding 15 parts of ammonium bifluoride into 40 parts of hydrochloric acid, and uniformly mixing to obtain a mixed solution; uniformly mixing 0.5 part of modified starch and 5 parts of ammonium sulfate to obtain powder; adding the powder and the mixed solution into 10 parts of water successively under stirring, standing and curing for 24 hours, and stirring once every 3 hours to prepare etching solution; s2, cleaning the surface of the glass substrate to be frosted for the first time by using clear water, and protecting the surface of the glass substrate which does not need to be frosted; s3, placing the glass substrate into a frosting device, and frosting the surface of the glass substrate for 300 seconds by using the etching solution prepared in the S1, wherein the temperature of the etching solution is kept at 28 ℃, and the temperature difference of the etching solution is controlled within 3%; s4, placing the glass substrate etched in the step S3 into a conventional polishing solution for 10 minutes;
s5, cleaning the surface of the polished glass substrate with clear water for the second time, and uniformly distributing fluorite crystals with fingerprint printing resistance and flashing effect on the surface of the glass substrate.
The surface of the glass substrate was subjected to a performance test to obtain the following results: the fluorite-like crystal layer has a hardness of 5H; the dynamic friction coefficient measured by a friction measuring instrument is 0.03, the wear resistance is good, the friction test of steel wool is more than 10000 times under the pressure of 1000 g per square centimeter, and the contact angle of water drops is maintained to be more than 100 degrees; under the irradiation of common lamplight, the surface of the glass substrate presents a flashing effect.
Example two
S1, preparing etching solution: adding 45 parts of fluoride salt into 46 parts of sulfuric acid, wherein the fluoride salt is selected from ammonium bifluoride and sodium fluoride, and uniformly mixing to obtain a mixed solution; uniformly mixing 1 part of modified starch and 4 parts of ammonium sulfate to obtain powder; adding the powder and the mixed solution into 20 parts of water successively under stirring, standing and curing for 24 hours, and stirring once every 3 hours to prepare etching solution; s2, cleaning the surface of the glass substrate to be frosted for the first time by using clear water, and protecting the surface of the glass substrate which does not need to be frosted; s3, placing the glass substrate into a frosting device, and frosting the surface of the glass substrate for 150 seconds by using the etching solution prepared in the step S1, wherein the temperature of the etching solution is kept at 30 ℃, and the temperature difference of the etching solution is controlled within 3%; s4, placing the glass substrate etched in the step S3 into a conventional polishing solution for 7 minutes; s5, cleaning the surface of the polished glass substrate with clear water for the second time, and uniformly distributing fluorite crystals with fingerprint printing resistance and flashing effect on the surface of the glass substrate.
The surface of the glass substrate was subjected to a performance test to obtain the following results: the fluorite-like crystal layer has a hardness of 4H; the dynamic friction coefficient measured by a friction measuring instrument is 0.05, the wear resistance is good, the friction test of steel wool is more than 10000 times under the pressure of 1000 g per square centimeter, and the contact angle of water drops is maintained to be more than 100 degrees; under the irradiation of common lamplight, the surface of the glass substrate presents a flashing effect.
Example III
S1, preparing etching solution: adding 35 parts of sodium fluoride into 50 parts of sulfuric acid, and uniformly mixing to obtain a mixed solution; uniformly mixing 2.5 parts of modified starch and 3 parts of ammonium sulfate to obtain powder; adding the powder and the mixed solution into 14 parts of water successively under stirring, standing and curing for 24 hours, and stirring once every 3 hours to prepare etching solution; s2, cleaning the surface of the glass substrate to be frosted for the first time by using clear water, and protecting the surface of the glass substrate which does not need to be frosted; s3, placing the glass substrate into a frosting device, and frosting the surface of the glass substrate for 40 seconds by using the etching solution prepared in the S1, wherein the temperature of the etching solution is kept at 25 ℃, and the temperature difference of the etching solution is controlled within 3%; s4, placing the glass substrate etched in the step S3 into a conventional polishing solution for 3 minutes; s5, cleaning the surface of the polished glass substrate with clear water for the second time, and uniformly distributing fluorite crystals with fingerprint printing resistance and flashing effect on the surface of the glass substrate.
The surface of the glass substrate was subjected to a performance test to obtain the following results: the fluorite-like crystal layer has a hardness of 5H; the dynamic friction coefficient measured by a friction measuring instrument is 0.04, the wear resistance is good, the friction test of steel wool is more than 10000 times under the pressure of 1000 g per square centimeter, and the contact angle of water drops is maintained to be more than 100 degrees; under the irradiation of common lamplight, the surface of the glass substrate presents a flashing effect.
Performance test
To verify the stability of the molding process of the present invention, two repeatability experiments (e.g., lots 1 and 2, resulting in glass substrates as shown in fig. 1 and 2) were performed using example two, and the following test results are shown in table 1:
table 1:
as shown in fig. 1-2, fluorite crystals are uniformly distributed on the surface of the glass substrate; from the data in table 1, the etching solution was stable to etching on the surface of the glass substrate. The forming process is mainly applied to a ground glass mobile phone rear cover, and the grains of finger fingerprints are dispersed as much as possible through fluorite crystallization, so that fingerprint resistance is realized; the treated glass surface can show a flashing effect under sunlight or lamplight, so that the ornamental value is greatly improved, and differentiation is realized.
The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, and yet fall within the scope of the invention.
Claims (6)
1. The fluorite-shaped fingerprint-proof and flashing-effect etching molding process for the glass substrate is characterized by comprising the following steps of:
s1, preparing etching solution: adding fluoride salt into inorganic acid, and uniformly mixing to obtain mixed solution; uniformly mixing modified starch and sulfate to obtain powder; adding the powder and the mixed solution into water successively under stirring, and then standing and curing to obtain etching solution;
s2, cleaning the surface of the glass substrate to be frosted for the first time by using clear water, and protecting the surface of the glass substrate which does not need to be frosted;
s3, placing the glass substrate into a frosting device, and frosting the surface of the glass substrate for 40-300 seconds by using the etching solution prepared in the step S1;
s4, placing the glass substrate etched in the step S3 into a conventional polishing solution for 3-10 minutes;
s5, cleaning the surface of the polished glass substrate with clear water for the second time to obtain a finished product;
the etching solution consists of the following components in parts by weight: 15-45 parts of fluoride salt, 3-5 parts of sulfate, 0.5-2.5 parts of modified starch, 40-50 parts of inorganic acid and 10-20 parts of water;
the fluoride salt comprises one or two of ammonium bifluoride and sodium fluoride.
2. The process for etching and forming a fluorite-shaped fingerprint and flash resistant glass substrate according to claim 1, wherein the process comprises the steps of: the sulfate salt comprises ammonium sulfate.
3. The process for etching and forming a fluorite-shaped fingerprint and flash resistant glass substrate according to claim 1, wherein the process comprises the steps of: the inorganic acid includes hydrochloric acid or sulfuric acid.
4. The process for etching and forming a fluorite-shaped fingerprint and flash resistant glass substrate according to claim 1, wherein the process comprises the steps of: and (3) curing time in the step (S1) is 24 hours, and stirring is carried out every 3 hours in the curing process.
5. The process for etching and forming a fluorite-shaped fingerprint and flash resistant glass substrate according to claim 1, wherein the process comprises the steps of: and S3, during frosting, the temperature of the etching solution is kept at 25-30 ℃, and the temperature difference of the etching solution is controlled within 3%.
6. The process for etching and forming a fluorite-shaped fingerprint and flash effects on a glass substrate according to any one of claims 1 to 5, wherein the process comprises the steps of: after the forming process is adopted to sand the surface of the glass substrate, fluorite crystals with fingerprint printing resistance and flashing effect are uniformly distributed on the surface of the glass substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210065388.8A CN115124249B (en) | 2022-01-20 | 2022-01-20 | Fluorite-shaped fingerprint-resistant and flashing-effect etching molding process for glass substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210065388.8A CN115124249B (en) | 2022-01-20 | 2022-01-20 | Fluorite-shaped fingerprint-resistant and flashing-effect etching molding process for glass substrate |
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| Publication Number | Publication Date |
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| CN115124249A CN115124249A (en) | 2022-09-30 |
| CN115124249B true CN115124249B (en) | 2024-01-23 |
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| CN115124249A (en) | 2022-09-30 |
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