CN111807876A - Anti-static ceramic tile with nano-structure on surface and preparation method thereof - Google Patents
Anti-static ceramic tile with nano-structure on surface and preparation method thereof Download PDFInfo
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- CN111807876A CN111807876A CN202010677292.8A CN202010677292A CN111807876A CN 111807876 A CN111807876 A CN 111807876A CN 202010677292 A CN202010677292 A CN 202010677292A CN 111807876 A CN111807876 A CN 111807876A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
- C04B41/88—Metals
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/51—Metallising, e.g. infiltration of sintered ceramic preforms with molten metal
- C04B41/5116—Ag or Au
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/53—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone involving the removal of at least part of the materials of the treated article, e.g. etching, drying of hardened concrete
- C04B41/5338—Etching
- C04B41/5353—Wet etching, e.g. with etchants dissolved in organic solvents
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/91—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics involving the removal of part of the materials of the treated articles, e.g. etching
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/90—Electrical properties
- C04B2111/905—Anti-static materials
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Abstract
The invention discloses an antistatic ceramic tile with a nano-structure on the surface and a preparation method thereof. The method comprises the following steps: s1, preparing weak acid with certain solubility according to the requirements of the microstructure of the surface of the ceramic tile; s2, uniformly spraying weak acid on the surface of the ceramic tile after grinding and polishing by adopting high-pressure atomization equipment, and modifying the surface microstructure; s3, cleaning and drying the modified ceramic tile surface; s4, preparing a silver particle-doped nano silicon dioxide aqueous solution; s5, coating the nano silicon dioxide water solution doped with silver particles on the surface of the modified ceramic tile by adopting a coating mode to form a film layer and baking the film layer; s6, after baking, cooling to obtain the anti-static ceramic tile; the invention has the characteristics of low difficulty of production technology, easy implementation and high cost performance.
Description
Technical Field
The invention belongs to the technical field of industrial ceramics, and particularly relates to an anti-static ceramic tile with a nano-structure on the surface and a preparation method thereof.
Background
Static electricity is a ubiquitous phenomenon, and in various industries, particularly with precision instruments or special environments, measures for protection against static electricity are required. In the field of decorative materials, antistatic decorative plates, wood, conductive paint and the like are adopted, and in the decorative materials, ceramic materials account for a considerable proportion, so that the preparation of the antistatic ceramic material is also in the direction of common efforts.
At present, patents for researching antistatic ceramics include, for example, CN103614003B provides a method for printing ceramic ink on the surface of ceramic by using semiconductor oxide to achieve antistatic effect; for example, in patent CN102030519B, zinc oxide and tin oxide semiconductor powder are directly mixed with ceramic blank by ball milling to prepare antistatic ceramic; the proposals disclosed by patents CN102795893B, CN103113133A and the like all adopt the same method; although the adopted process is different, the material property that the semiconductor powder can eliminate static electricity is utilized. At present, the semiconductor powder added into the ceramic blank generally adopts single or composite powder such as zinc oxide, tin oxide or antimony oxide and the like, and a certain proportion is required to be added, for example, 11-35% of tin dioxide and 1-9% of antimony trioxide are required to be added as described in patent CN 102030519B; 30-45% of tin dioxide is added as described in patent CN102795893B, so that the cost is high; in addition, by adopting a special process preparation method, such as the method of wrapping the ceramic tile blank powder with the conductive paste introduced in patent CN103113133A, although the amount of semiconductor powder is reduced, the process and cost of the production process are increased, and the technical difficulty of production is increased, which is not easy to implement.
Therefore, the development of a preparation method of the electrostatic ceramic tile with low production technical difficulty, easy implementation and high cost performance is imperative
Disclosure of Invention
The invention aims to provide a preparation method of an electrostatic ceramic tile, which has low production technology difficulty, is easy to implement and has high cost performance.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a preparation method of an antistatic ceramic tile with a nano-structure on the surface comprises the following steps:
s1, preparing weak acid according to the requirements of the microstructure of the surface of the ceramic tile;
s2, uniformly spraying weak acid on the surface of the ceramic tile after grinding and polishing by adopting high-pressure atomization equipment, and modifying the surface microstructure;
s3, cleaning and drying the modified ceramic tile surface;
s4, preparing a silver particle-doped nano silicon dioxide aqueous solution;
s5, coating the nano silicon dioxide water solution doped with silver particles on the surface of the modified ceramic tile by adopting a coating mode to form a film layer, and baking;
and S6, finishing baking, and cooling to obtain the anti-static ceramic tile.
Preferably, the silver particle-doped nano-silica aqueous solution in S4 is composed of silver particle-doped nano-silica, water, a coupling agent and a PH regulator;
the composition comprises the following components in percentage by weight: silver particle-doped nanosilica: 20-50% of water: 50-80% of a coupling agent: 1-5% and a pH regulator: 0.5 to 1 percent.
Preferably, the weak acid in S1 is citric acid with a concentration of 5-15%.
Preferably, in the S2, the high-pressure atomization pressure is 0.6-0.8MPa, and the nozzle diameter of the atomization equipment is 0.5-1.0 mm.
Preferably, the coating method adopted in S5 is to transfer the nano-silica aqueous solution to the surface of the ceramic tile by using cotton cloth in a state of 100% wet saturation, and the baking process in S5 is to bake for 20-60 minutes at a temperature of 150-250 ℃.
Preferably, the size of the nano silicon dioxide is 50-200 nm, and the size of the silver particles is 2-5 nm.
Preferably, the modification time in S2 is 30 to 120 seconds.
Preferably, the surface of the ceramic tile in S2 has a roughness Ra of 0.1-0.5 μm after surface microstructure modification.
The invention also discloses an antistatic ceramic tile with a nano-structure on the surface, which comprises a ceramic tile and a thin film layer, wherein the thin film layer is arranged on the surface of the ceramic tile, the contact angle of the thin film layer is 0-10 degrees, and the thin film layer has super-hydrophilicity.
Preferably, the thickness of the thin film layer is 1-5 μm.
Compared with the prior art, the invention has the beneficial technical effects that:
1. the surface of the ceramic tile is subjected to microstructure treatment by using weak acid, so that the specific surface area and the recessed structure of the surface of the ceramic tile are increased, on one hand, the ceramic tile can better accept the coating of the silver particle-doped nano-silica solution, on the other hand, the adsorption capacity of the ceramic tile to water molecules in the air is improved, so that the ceramic tile has a certain antistatic effect, and meanwhile, the silver particle-doped nano-silica solution is coated on the surface modified by the ceramic tile, and the ceramic tile coated with the silver particle-doped nano-silica solution is baked at a specific temperature and for a specific time, so that the silver particle-doped nano-silica solution forms a thin film layer on the surface of the ceramic tile, and the thin film layer has super-hydrophilicity, can adsorb the water molecules in the air, so that the ceramic tile has, the nano-silver particles doped in the thin film layer can form a good conductive network in the thin film layer, so that the surface resistance of the ceramic tile is reduced, and the accumulated static can be released as soon as possible, thereby achieving the static prevention effect and further improving the static prevention capability of the ceramic tile;
2. the formula of the blank and the glaze of the conventional ceramic tile is not required to be changed, but the surface microstructure of the conventional ceramic tile is modified and the thin film layer with the anti-static effect is coated, so that the ceramic tile has a good anti-static effect on the premise of small change of the whole structure of the ceramic tile;
3. the existing ceramic tile production equipment does not need to be adjusted, the equipment modification cost caused by process flow upgrading is saved, the production cost of the anti-static ceramic tile is reduced, the economic applicability is better, and the application range of the invention is favorably widened.
Drawings
FIG. 1 is a schematic process flow diagram of examples 1 and 2 of the present invention;
FIG. 2 is a simplified process flow diagram of example 3 of the present invention;
FIG. 3 is a structural sectional view of embodiment 4 of the present invention;
FIG. 4 is a structural sectional view of embodiment 5 of the present invention.
Wherein, the technical characteristics that each reference numeral refers to are as follows:
1. ceramic tiles; 2. a thin film layer.
Example 1 discloses an antistatic ceramic tile with a nano-structure on the surface and a preparation method thereof, and the content is as follows
1) Preferably, 5% solubility organic citric acid is selected to carry out microstructure modification on the surface of the ceramic tile 1;
2) the weak acid is sprayed on the surface of the ceramic tile 1 by adopting the air pressure of 0.7MPa, the diameter of a nozzle is preferably 0.5mm, the weak acid is sprayed on the surface of the ceramic tile 1, the modification time of 120 seconds is preferably selected, and the roughness Ra of a microstructure formed is 0.15 mu m;
3) washing the surface of the ceramic tile 1 with clear water, and blowing the surface dry with natural wind until no obvious liquid water can be seen by naked eyes;
4) the surface of the modified ceramic tile 1 is coated with the doped nano-silica aqueous solution by cotton cloth in a 100% wetting saturation state at a coating speed of 160mm/s, and the preferred scheme I is composed of the following components in percentage by weight:
silver particle-doped nanosilica: 25%, wherein the silver particle size is 2nm, the silica size is 50nm, water: 69.5%, hydrophilic silane coupling agent: 5% and pH regulator: 0.5% potassium tartrate;
5) drying the coated ceramic tile 1 at a certain temperature and for a certain time, wherein the drying time and the temperature are preferably 180 ℃ and 60min, the thickness of the thin film layer 2 is 2 micrometers, and the contact angle is 3 ℃;
6) and (5) after drying, cooling to prepare the anti-static ceramic tile.
The product prepared by the scheme is tested, and the surface resistance is tested to be 5.68 multiplied by 108 omega by point-to-point in the environment with the temperature of 25 ℃ and the relative humidity of 50-70 percent, thereby meeting the national standard of SJ/T10694-2006 and being a good antistatic ceramic tile.
1) According to the selection scheme of weak acid, organic citric acid with 10% solubility is preferably selected, and the surface of the ceramic tile 1 is subjected to microstructure modification;
2) the spraying mode of the weak acid adopts the air pressure of 0.6-0.8MPa, the diameter of a nozzle is preferably 0.6mm, the weak acid is sprayed on the surface of the ceramic tile 1, the modification time of 90 seconds is preferably selected, and the roughness Ra of the microstructure formed is 0.25 mu m;
3) washing the surface of the ceramic tile 1 with clear water, and drying the surface with natural wind, wherein obvious liquid water cannot be seen by naked eyes;
4) coating the surface of the modified ceramic tile 1 with a doped nano-silica aqueous solution by using cotton cloth in a 100% wet saturation state at a coating speed of 140mm/s, wherein the preferred scheme II comprises the following components in percentage by weight:
silver particle-doped nanosilica: 32%, wherein the silver particle size is 3nm, the silica size is 120nm, water: 64.3%, hydrophilic silane coupling agent: 3% and pH regulator: 0.7% potassium tartrate;
5) drying the coated ceramic tile 1 at a certain temperature and for a certain time, wherein the drying time and the temperature are preferably 200 ℃ and 35min, the thickness of the thin film layer 2 is 3 mu m, and the contact angle is 4 ℃;
6) and (5) after drying, cooling to prepare the anti-static ceramic tile.
The product prepared by the scheme is tested, and the surface resistance is tested to be 5.18 multiplied by 108 omega by point-to-point in the environment with the temperature of 25 ℃ and the relative humidity of 50-70 percent, thereby meeting the national standard of SJ/T10694-2006 and being a good antistatic ceramic tile.
Example 3 discloses an antistatic ceramic tile with a nano-structure on the surface and a preparation method thereof, and the content is as follows
1) Preferably, organic citric acid with 15% solubility is selected to carry out microstructure modification on the surface of the ceramic tile 1;
2) the weak acid spraying mode adopts 0.8MPa air pressure, the diameter of a nozzle is preferably 1.0mm, the weak acid is sprayed on the surface of the ceramic tile 1, the modification time of 120 seconds is preferably selected, and the roughness Ra of a microstructure formed is 0.4 mu m;
3) washing the surface of the ceramic tile 1 with clear water, and blowing the surface dry with natural wind until no obvious liquid water can be seen by naked eyes;
4) coating the surface of the modified ceramic tile 1 with a doped nano-silica aqueous solution by using cotton cloth in a 100% wet saturation state at a coating speed of 120mm/s, wherein the preferred scheme is three:
silver particle-doped nanosilica: 40%, wherein the silver particle size is 5nm, the silica size is 200nm, water: 57.5%, hydrophilic silane coupling agent: 1.5% and pH regulator: 1% potassium tartrate;
5) drying the coated ceramic tile 1 at a certain temperature and for a certain time, wherein the drying time and the temperature are preferably 250 ℃ and 20min, the thickness of the thin film layer 2 is 5 micrometers, and the contact angle is 5 ℃;
6) and (5) after drying, cooling to prepare the anti-static ceramic tile.
The product prepared by the scheme is tested, and the surface resistance is 4.58 multiplied by 108 omega by adopting point-to-point test in the environment with the temperature of 25 ℃ and the relative humidity of 50-70 percent, thereby being in line with the national standard SJ/T10694-2006 and being a good antistatic ceramic tile.
Embodiment 4 discloses an antistatic ceramic tile with a nano-structure on the surface, which comprises a ceramic tile 1 and a film layer 2, wherein the film layer 2 only covers the upper surface of the ceramic tile 1.
Embodiment 5 discloses an antistatic ceramic tile with a nano-structure on the surface, which comprises a ceramic tile 1 and a film layer 2, wherein the film layer 2 completely covers the surface of the ceramic tile 1.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments, but the scope of the present invention is not limited to the following embodiments.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. The preparation method of the anti-static ceramic tile with the nano-structure on the surface is characterized by comprising the following steps:
s1, preparing weak acid according to the requirements of the surface microstructure of the ceramic tile (1);
s2, uniformly spraying weak acid on the surface of the ceramic tile (1) after grinding and polishing by adopting high-pressure atomization equipment to modify the surface microstructure;
s3, cleaning and drying the surface of the modified ceramic tile (1);
s4, preparing a silver particle-doped nano silicon dioxide aqueous solution;
s5, coating the nano silicon dioxide water solution doped with silver particles on the surface of the modified ceramic tile (1) by adopting a coating mode to form a film layer (2), and baking;
and S6, finishing baking, and cooling to obtain the anti-static ceramic tile.
2. The method for preparing antistatic ceramic tile with nano-structure on the surface as claimed in claim 1, wherein the silver particle doped nano-silica aqueous solution in S4 is composed of silver particle doped nano-silica, water and coupling agent, PH value regulator;
the composition comprises the following components in percentage by weight: silver particle-doped nanosilica: 20-50% of water: 50-80% of a coupling agent: 1-5% and a pH regulator: 0.5 to 1 percent.
3. The method for preparing anti-static ceramic tile with nano-structure on the surface as claimed in claim 1, wherein the weak acid in S1 is citric acid with concentration of 5-15%.
4. The method for preparing the antistatic ceramic tile with the nano-structure on the surface as claimed in claim 3, wherein in S2, the pressure of high-pressure atomization is 0.6-0.8MPa, and the nozzle diameter of the atomization device is 0.5-1.0 mm.
5. The method for preparing the antistatic ceramic tile with the nano-structure on the surface as claimed in claim 1, wherein the coating manner adopted in S5 is to transfer the nano-silica aqueous solution to the surface of the ceramic tile (1) by using cotton cloth in a state of 100% wetting saturation, and the baking process in S5 is to bake at a temperature of 150-250 ℃ for 20-60 minutes.
6. The method for preparing the antistatic ceramic tile with the nano-structure on the surface as claimed in claim 2, wherein the size of the nano-silica is 50-200 nm, and the size of the silver particles is 2-5 nm.
7. The method for preparing the antistatic ceramic tile with the nano-structure on the surface as claimed in claim 2, wherein the modification time in S2 is 30-120 seconds.
8. The method for preparing the antistatic ceramic tile with the nano-structure on the surface as claimed in claim 1, wherein the roughness Ra of the surface of the ceramic tile (1) in S2 after surface microstructure modification is 0.1-0.5 μm.
9. An antistatic ceramic tile with a nano-structure on the surface, prepared by the preparation method according to any one of claims 1 to 8, comprises a ceramic tile (1) and a thin film layer (2), wherein the thin film layer (2) is arranged on the surface of the ceramic tile (1), the contact angle of the thin film layer (2) is 0-10 degrees, and the thin film layer (2) has super-hydrophilicity.
10. The antistatic ceramic tile with the nano-structure on the surface as claimed in claim 9, wherein the thickness of the thin film layer (2) is 1-5 μm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010677292.8A CN111807876A (en) | 2020-07-14 | 2020-07-14 | Anti-static ceramic tile with nano-structure on surface and preparation method thereof |
| PCT/CN2020/133065 WO2022011932A1 (en) | 2020-07-14 | 2020-12-01 | Anti-static ceramic tile having nanostructure on surface and preparation method |
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| CN202010677292.8A CN111807876A (en) | 2020-07-14 | 2020-07-14 | Anti-static ceramic tile with nano-structure on surface and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112624771A (en) * | 2020-12-11 | 2021-04-09 | 佛山欧神诺陶瓷有限公司 | Hollowing-proof ceramic tile with gradient porous structure and preparation method and application thereof |
| WO2022011932A1 (en) * | 2020-07-14 | 2022-01-20 | 广东萨米特陶瓷有限公司 | Anti-static ceramic tile having nanostructure on surface and preparation method |
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- 2020-12-01 WO PCT/CN2020/133065 patent/WO2022011932A1/en active Application Filing
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022011932A1 (en) * | 2020-07-14 | 2022-01-20 | 广东萨米特陶瓷有限公司 | Anti-static ceramic tile having nanostructure on surface and preparation method |
| CN112624771A (en) * | 2020-12-11 | 2021-04-09 | 佛山欧神诺陶瓷有限公司 | Hollowing-proof ceramic tile with gradient porous structure and preparation method and application thereof |
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| WO2022011932A1 (en) | 2022-01-20 |
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Address after: 526124 Bai Tu Yi and ER Cun, Lubu Town, Gaoyao District, Zhaoqing City, Guangdong Province Applicant after: GUANGDONG SUMMIT CERAMICS Co.,Ltd. Applicant after: GUANGDONG NEWPEARL CERAMIC GROUP Co.,Ltd. Applicant after: Foshan Sanshuiguanzhu Ceramics Co.,Ltd. Address before: 526124 Bai Er Yi, er Cun, Lubu Town, Gaoyao District, Zhaoqing City, Guangdong Province Applicant before: GUANGDONG SUMMIT CERAMICS Co.,Ltd. Applicant before: GUANGDONG NEWPEARL CERAMIC GROUP Co.,Ltd. Applicant before: Foshan Sanshuiguanzhu Ceramics Co.,Ltd. |
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