CN111116051A - Preparation method of super-hydrophobic self-cleaning coating - Google Patents
Preparation method of super-hydrophobic self-cleaning coating Download PDFInfo
- Publication number
- CN111116051A CN111116051A CN201911398396.9A CN201911398396A CN111116051A CN 111116051 A CN111116051 A CN 111116051A CN 201911398396 A CN201911398396 A CN 201911398396A CN 111116051 A CN111116051 A CN 111116051A
- Authority
- CN
- China
- Prior art keywords
- dds
- cleaning coating
- self
- sol
- super
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/22—Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
- C03C17/23—Oxides
- C03C17/25—Oxides by deposition from the liquid phase
-
- 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
- C03C2217/00—Coatings on glass
- C03C2217/20—Materials for coating a single layer on glass
- C03C2217/21—Oxides
- C03C2217/213—SiO2
-
- 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
- C03C2217/00—Coatings on glass
- C03C2217/70—Properties of coatings
-
- 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
- C03C2218/00—Methods for coating glass
- C03C2218/10—Deposition methods
- C03C2218/11—Deposition methods from solutions or suspensions
- C03C2218/112—Deposition methods from solutions or suspensions by spraying
-
- 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
- C03C2218/00—Methods for coating glass
- C03C2218/10—Deposition methods
- C03C2218/11—Deposition methods from solutions or suspensions
- C03C2218/113—Deposition methods from solutions or suspensions by sol-gel processes
Abstract
The invention discloses a preparation method of a super-hydrophobic self-cleaning coating, which belongs to the field of manufacturing of solar crystalline silicon batteries. The method has the advantages of simple preparation process, strong repeatability, low carbon, environmental protection, no need of high temperature, convenience for industrial production and the like, and the formed super-hydrophobic self-cleaning film has high stability and better corrosion resistance and mechanical damage resistance.
Description
Technical Field
The invention belongs to the field of manufacturing of solar crystalline silicon cells, and particularly relates to a preparation method of a super-hydrophobic self-cleaning coating.
Background
With the rapid development of photovoltaic solar technology since this century, technological innovation of solar cells is also continuing, and cell efficiency slowly approaches the theoretical limit. Under the circumstance, the technology of the module end is improved, and is one of important ways for improving the solar power generation efficiency, wherein the dust of the module shields the influence on the actual power generation efficiency of the module to become a difficult problem to be improved, so that the self-cleaning technology of the photovoltaic module becomes a new technical hotspot.
The self-cleaning technology is a technology capable of self-purifying and cleaning under natural conditions such as rainwater and the like, and is applied to the photovoltaic field, wherein a 'film layer' or a 'coating' is mainly applied on a photovoltaic glass assembly panel and combined with a glass substrate, so that the surface of a photovoltaic assembly is in a super-hydrophobic or super-hydrophilic state, and the self-cleaning effect is achieved. After the coating is formed, manual maintenance and cleaning are not needed, and the self-cleaning purpose can be achieved under the washing of natural rainwater.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a method for forming a super-hydrophobic self-cleaning coating on the surface of a solar component.
In order to solve the technical problems, the inventor obtains the technical scheme of the invention through practice and summary, and the invention discloses a preparation method of a super-hydrophobic self-cleaning coating, which comprises the following steps:
s1, taking orthosilicate, absolute ethyl alcohol and deionized water as main raw materials, reacting under the catalysis of ammonia water to generate silicon dioxide sol particles (SCPs),
s2, taking hydrophilic silicon dioxide, absolute ethyl alcohol and methyl ethoxy silane (DDS) as main raw materials, reacting under the catalysis of ammonia water to generate cross-linked silicon dioxide particles (DDS-SNPS),
s3, coating the SCPs sol-gel solution and the DDS-SNPS sol-gel solution on the surface of the substrate in sequence by a spraying mode on the pre-cleaned glass substrate to form the composite coating.
Preferably, the spray coating of S3 is dried to form the super-hydrophobic self-cleaning coating.
Preferably, the drying after the spraying of S3 is performed under outdoor conditions.
Preferably, the particle size of the silica sol particles (SCPs) in S1 is 10-50 nm.
Preferably, in the raw material of S2 for forming the cross-linked silica particles (DDS-SNPS), the ethoxysilanes (DDS) include one or more of methyltriethoxysilane, phenyltriethoxysilane, tetraethoxysilane, aminopropylmethyldiethoxysilane.
Preferably, the mass ratio of the hydrophilic silica to the absolute ethyl alcohol to the ethoxysilanes (DDS) in S2 is 5: 10: stirring and mixing for 1-5h under the action of a stirrer, dropwise adding a proper amount of ammonia water into the mixed solution in the stirring process, and stirring for 1-5h after the ammonia water is added.
Preferably, in S3, the SCPs sol-gel solution and the DDS-SNPS sol-gel solution are sequentially coated on the surface of the substrate, repeated for 3-5 times, sprayed on the surface of the treated substrate, and dried outdoors for 1-7 days.
Compared with the prior art, the invention can obtain the following technical effects:
1. according to the invention, silica sol particles (SCPs) are coated and combined with a glass substrate, hydroxyl on the surface of the glass substrate and hydroxyl on the surface of the silica sol particles are subjected to chemical dehydration condensation reaction, so that the glass substrate and the substrate have good chemical bond combination, the stability of substrate combination is increased, then, crosslinked silica particles (DDS-SNPS) are coated on the silica sol particles (SCPs) and subjected to the same chemical dehydration condensation reaction, long-chain alkyl on the crosslinked silica particles (DDS-SNPS) reduces the surface energy of a coating, and meanwhile, the surface roughness is improved by the superposition of two different coatings, so that the superhydrophobic self-cleaning coating is prepared.
2. The method has the advantages of simple preparation process, strong repeatability, low carbon, environmental protection, no need of high temperature, convenience for industrial production and the like, and the formed super-hydrophobic self-cleaning film has high stability and better corrosion resistance and mechanical damage resistance.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a graph showing the change of the contact angle of the surface of a sample of a superhydrophobic coating after soaking in aqueous solutions of different pH values for different days.
Fig. 2 is a wear resistance test effect graph.
Detailed Description
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. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The application of the principles of the present invention will be further described with reference to the accompanying drawings and specific embodiments.
Example 1
A preparation method of a super-hydrophobic self-cleaning coating comprises the following steps:
s1, taking orthosilicate, absolute ethyl alcohol and deionized water as main raw materials, reacting under the catalysis of ammonia water to generate silicon dioxide sol particles (SCPs),
s2, taking hydrophilic silicon dioxide, absolute ethyl alcohol and methyl ethoxy silane (DDS) as main raw materials, reacting under the catalysis of ammonia water to generate cross-linked silicon dioxide particles (DDS-SNPS),
s3, coating the SCPs sol-gel solution and the DDS-SNPS sol-gel solution on the surface of the substrate in sequence by a spraying mode on the pre-cleaned glass substrate to form the composite coating.
Wherein: drying the sprayed S3 under outdoor conditions to form a super-hydrophobic self-cleaning coating; the particle size of the silica sol particles (SCPs) in the S1 is 10-50 nm; in the step of forming cross-linked silica particles (DDS-SNPS) by S2, ethoxysilanes (DDS) comprise one or more of methyltriethoxysilane, phenyltriethoxysilane, tetraethoxysilane and aminopropylmethyldiethoxysilane. The mass ratio of hydrophilic silicon dioxide, absolute ethyl alcohol and ethoxysilanes (DDS) in the S2 is 5: 10: stirring and mixing for 1-5h under the action of a stirrer, dropwise adding a proper amount of ammonia water into the mixed solution in the stirring process, and stirring for 1-5h after the ammonia water is added. And in the S3, the SCPs sol-gel solution and the DDS-SNPS sol-gel solution are sequentially coated on the surface of the substrate, repeated for 3-5 times, sprayed on the surface of the treated component substrate, and dried outdoors for 1-7 days.
As shown in fig. 1-2: in order to better reflect that the super-hydrophobic coating prepared by the process has better corrosion resistance and mechanical damage resistance, the following experimental method is designed for explanation.
FIG. 1 is a surface contact angle change curve of the prepared super-hydrophobic self-cleaning coating soaked in solutions with different pH values for different days. As can be seen from FIG. 1, the thin film coating can be stable for at least 10 days in neutral and slightly acidic aqueous solution, and the contact angle is still larger than 150 degrees; in strong acid or slightly alkaline water solution, the stability of the coating is slightly reduced, and after the coating is soaked for 10 days, the contact angle is reduced to about 140 degrees. In strongly alkaline aqueous solutions, the coating is not stable and the contact angle drops quickly to 110 °, mainly due to the reaction of NaOH solution with the surface particles, destroying their surface structure.
In order to test the wear resistance of the super-hydrophobic coating prepared by the process flow, the super-hydrophobic coating is coated on a plastic film, and three modes of finger pressing, adhesive tape adhesion and scissors scratching are adopted to discuss the wear resistance of the super-hydrophobic coating, as shown in fig. 2, the results show that the coatings on the surface of the plastic film are damaged in different degrees under 3 different test methods, so that the contact angle is reduced. But still keep the contact angle of more than 120 degrees and make the plastic film still have better hydrophobicity, which indicates that the super-hydrophobic coating has certain wear resistance.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A preparation method of a super-hydrophobic self-cleaning coating is characterized by comprising the following steps:
s1, taking orthosilicate, absolute ethyl alcohol and deionized water as main raw materials, reacting under the catalysis of ammonia water to generate silicon dioxide sol particles (SCPs),
s2, taking hydrophilic silicon dioxide, absolute ethyl alcohol and methyl ethoxy silane (DDS) as main raw materials, reacting under the catalysis of ammonia water to generate cross-linked silicon dioxide particles (DDS-SNPS),
s3, coating the SCPs sol-gel solution and the DDS-SNPS sol-gel solution on the surface of the substrate in sequence by a spraying mode on the pre-cleaned glass substrate to form the composite coating.
2. The method for preparing a superhydrophobic self-cleaning coating according to claim 1, wherein: and S3, drying after spraying to form the super-hydrophobic self-cleaning coating.
3. The method for preparing a superhydrophobic self-cleaning coating according to claim 2, wherein: and the drying after the S3 spraying is carried out under the outdoor condition.
4. The method for preparing a superhydrophobic self-cleaning coating according to claim 1, wherein: the particle size of the silica sol particles (SCPs) in S1 is 10-50 nm.
5. The method for preparing a superhydrophobic self-cleaning coating according to claim 1, wherein: in the step of forming cross-linked silica particles (DDS-SNPS) by S2, ethoxysilanes (DDS) comprise one or more of methyltriethoxysilane, phenyltriethoxysilane, tetraethoxysilane and aminopropylmethyldiethoxysilane.
6. The method for preparing a superhydrophobic self-cleaning coating according to claim 1, wherein: the mass ratio of hydrophilic silicon dioxide, absolute ethyl alcohol and ethoxysilanes (DDS) in the S2 is 5: 10: stirring and mixing for 1-5h under the action of a stirrer, dropwise adding a proper amount of ammonia water into the mixed solution in the stirring process, and stirring for 1-5h after the ammonia water is added.
7. The method for preparing a superhydrophobic self-cleaning coating according to claim 1, wherein: and in the S3, the SCPs sol-gel solution and the DDS-SNPS sol-gel solution are sequentially coated on the surface of the substrate, repeated for 3-5 times, sprayed on the surface of the treated component substrate, and dried outdoors for 1-7 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911398396.9A CN111116051A (en) | 2019-12-30 | 2019-12-30 | Preparation method of super-hydrophobic self-cleaning coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911398396.9A CN111116051A (en) | 2019-12-30 | 2019-12-30 | Preparation method of super-hydrophobic self-cleaning coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111116051A true CN111116051A (en) | 2020-05-08 |
Family
ID=70505487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911398396.9A Pending CN111116051A (en) | 2019-12-30 | 2019-12-30 | Preparation method of super-hydrophobic self-cleaning coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111116051A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115028372A (en) * | 2022-06-27 | 2022-09-09 | 四川大学 | Preparation method of self-cleaning crystal product |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101333078A (en) * | 2008-08-05 | 2008-12-31 | 广州市白云化工实业有限公司 | Fluorosilicate self-cleaning glass nanophase material and producing method thereof |
| KR101392335B1 (en) * | 2013-05-03 | 2014-05-12 | 인하대학교 산학협력단 | Fabrication method of superhydrophobic coating layer with excellent adhesion strength and fabric and the superhydrophobic coating layer thereby |
| CN103951276A (en) * | 2014-05-04 | 2014-07-30 | 江南大学 | Self-cleaning anti-reflection film and preparation method thereof |
| CN106587081A (en) * | 2016-12-01 | 2017-04-26 | 伊科纳诺（北京）科技发展有限公司 | Method for preparing hydrophobic hybrid aerosil |
| CN108299869A (en) * | 2016-08-25 | 2018-07-20 | 中国科学院理化技术研究所 | High intensity super-hydrophobic automatic cleaning coating and high intensity anti-reflection super-hydrophobic automatic cleaning coating and their preparation method |
-
2019
- 2019-12-30 CN CN201911398396.9A patent/CN111116051A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101333078A (en) * | 2008-08-05 | 2008-12-31 | 广州市白云化工实业有限公司 | Fluorosilicate self-cleaning glass nanophase material and producing method thereof |
| KR101392335B1 (en) * | 2013-05-03 | 2014-05-12 | 인하대학교 산학협력단 | Fabrication method of superhydrophobic coating layer with excellent adhesion strength and fabric and the superhydrophobic coating layer thereby |
| CN103951276A (en) * | 2014-05-04 | 2014-07-30 | 江南大学 | Self-cleaning anti-reflection film and preparation method thereof |
| CN108299869A (en) * | 2016-08-25 | 2018-07-20 | 中国科学院理化技术研究所 | High intensity super-hydrophobic automatic cleaning coating and high intensity anti-reflection super-hydrophobic automatic cleaning coating and their preparation method |
| CN106587081A (en) * | 2016-12-01 | 2017-04-26 | 伊科纳诺（北京）科技发展有限公司 | Method for preparing hydrophobic hybrid aerosil |
Non-Patent Citations (1)
| Title |
|---|
| ZAO CHEN ET AL: "Highly transparent, stable, and superhydrophobic coatings based on gradient structure design and fast regeneration from physical damage", 《APPLIED SURFACE SCIENCE》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115028372A (en) * | 2022-06-27 | 2022-09-09 | 四川大学 | Preparation method of self-cleaning crystal product |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102241939B (en) | Organic-inorganic hybrid super-hydrophilic coating as well as preparation method and application thereof | |
| CN108299869B (en) | High-strength super-hydrophobic self-cleaning coating, high-strength anti-reflection super-hydrophobic self-cleaning coating and preparation methods thereof | |
| CN108623185B (en) | Double-layer composite SiO2Preparation method of antireflection film | |
| CN103524049B (en) | A kind of monolayer SiO2the preparation method of anti-reflection film | |
| CN107653744B (en) | Super-hydrophobic paper and preparation method thereof | |
| CN103114436B (en) | Super-hydrophobic fabric preparation method and super-hydrophobic functional fabric | |
| CN110564227B (en) | Preparation method of porous polyvinylidene fluoride super-hydrophobic coating | |
| CN113754308B (en) | Preparation method of super-amphiphobic antifouling transparent coating | |
| CN106892575A (en) | A kind of preparation method of porous silica antireflective coating | |
| CN110699668B (en) | Composite coating body, preparation method and application thereof, and solar cell | |
| CN109534687A (en) | A kind of high dust-proof film liquid and preparation method thereof thoroughly of photovoltaic glass | |
| CN111116051A (en) | Preparation method of super-hydrophobic self-cleaning coating | |
| CN103881419B (en) | Hydrophobic hollow spherical SiO2 nanoparticle and its preparation method and application | |
| CN107902919A (en) | A kind of antireflective super-hydrophobic glass film and preparation method thereof | |
| CN102774085B (en) | Hydrophobic substrate and preparation method thereof | |
| CN115806748A (en) | Preparation method and application of nano coating material for photovoltaic panel | |
| CN103755152B (en) | A kind of super-hydrophobic SiO 2the preparation method of aerogel | |
| CN110272683B (en) | Wear-resistant super-hydrophobic coating, preparation method thereof and method for preparing coating | |
| CN110240816B (en) | Transparent self-cleaning anti-dust deposition coating material and preparation method thereof | |
| CN103122458B (en) | 45# steel surface has the preparation method of the self-assembled film of corrosion inhibition | |
| AU2016258878A1 (en) | Coated glass for solar reflectors | |
| CN112724767A (en) | Enhanced anti-reflection hydrophobic coating and preparation method thereof | |
| CN111185977A (en) | Production method of super-hydrophobic wood | |
| CN108914092A (en) | A kind of iron hydroxide based superhydrophobic thin films and preparation method thereof | |
| CN115895304B (en) | Preparation method of multifunctional nano composite coating film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200508 |