CN110093050A - Superhydrophilic self-cleaning coating composition, superhydrophilic self-cleaning glass and preparation method thereof - Google Patents
Superhydrophilic self-cleaning coating composition, superhydrophilic self-cleaning glass and preparation method thereof Download PDFInfo
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- CN110093050A CN110093050A CN201810082991.0A CN201810082991A CN110093050A CN 110093050 A CN110093050 A CN 110093050A CN 201810082991 A CN201810082991 A CN 201810082991A CN 110093050 A CN110093050 A CN 110093050A
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- cleaning
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- 238000004140 cleaning Methods 0.000 title claims abstract description 103
- 239000008199 coating composition Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 36
- 239000005348 self-cleaning glass Substances 0.000 title claims abstract description 34
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 87
- 238000000576 coating method Methods 0.000 claims abstract description 84
- 239000011248 coating agent Substances 0.000 claims abstract description 79
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 41
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 36
- 239000011521 glass Substances 0.000 claims abstract description 30
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 33
- 239000000203 mixture Substances 0.000 claims description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 12
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 8
- 235000019441 ethanol Nutrition 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 5
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 5
- -1 γ-(methacryloxypropyl) propyl Chemical group 0.000 claims description 5
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 4
- 150000001298 alcohols Chemical class 0.000 claims description 4
- 239000002105 nanoparticle Substances 0.000 claims description 4
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 241000500881 Lepisma Species 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 229960004756 ethanol Drugs 0.000 claims description 2
- 235000011187 glycerol Nutrition 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 229910000077 silane Inorganic materials 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 241000209094 Oryza Species 0.000 claims 2
- 235000007164 Oryza sativa Nutrition 0.000 claims 2
- 235000009566 rice Nutrition 0.000 claims 2
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims 1
- 241000790917 Dioxys <bee> Species 0.000 claims 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims 1
- 239000007822 coupling agent Substances 0.000 claims 1
- 230000008595 infiltration Effects 0.000 claims 1
- 238000001764 infiltration Methods 0.000 claims 1
- 229910052719 titanium Inorganic materials 0.000 claims 1
- 239000010936 titanium Substances 0.000 claims 1
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 4
- 238000013033 photocatalytic degradation reaction Methods 0.000 abstract description 4
- 239000003973 paint Substances 0.000 description 20
- 238000012360 testing method Methods 0.000 description 15
- 229910052681 coesite Inorganic materials 0.000 description 11
- 229910052906 cristobalite Inorganic materials 0.000 description 11
- 229910052682 stishovite Inorganic materials 0.000 description 11
- 229910052905 tridymite Inorganic materials 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 7
- 239000008367 deionised water Substances 0.000 description 6
- 229910021641 deionized water Inorganic materials 0.000 description 6
- 230000001699 photocatalysis Effects 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 230000032683 aging Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 5
- 229940043267 rhodamine b Drugs 0.000 description 5
- 238000010998 test method Methods 0.000 description 5
- 238000013019 agitation Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000007146 photocatalysis Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 3
- 238000007665 sagging Methods 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000007605 air drying Methods 0.000 description 2
- 230000003667 anti-reflective effect Effects 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000005357 flat glass Substances 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000001246 colloidal dispersion Methods 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000001755 magnetron sputter deposition Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000001782 photodegradation Methods 0.000 description 1
- 208000007578 phototoxic dermatitis Diseases 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000001338 self-assembly Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 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
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/006—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character
-
- 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
- C03C17/256—Coating containing TiO2
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
-
- 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
- C03C2217/23—Mixtures
-
- 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
- C03C2218/114—Deposition methods from solutions or suspensions by brushing, pouring or doctorblading
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Inorganic Chemistry (AREA)
- Composite Materials (AREA)
- Surface Treatment Of Glass (AREA)
- Paints Or Removers (AREA)
Abstract
The present invention relates to self-cleaning glass field, a kind of superhydrophilic self-cleaning coating composition, superhydrophilic self-cleaning glass and preparation method thereof are disclosed.The superhydrophilic self-cleaning coating composition contains modified manometer silicon dioxide colloidal sol, anatase type nano titanium dioxide sol and water；On the basis of the amount of the total material of solid-state colloidal sol, the molar fraction of the modified manometer silicon dioxide colloidal sol is 40-70%, and the molar fraction of the anatase type nano titanium dioxide sol is 30-60%.Described its structure of superhydrophilic self-cleaning glass successively includes the coating that the superhydrophilic self-cleaning coating composition is formed, glass plate from top to bottom.The invention also includes superhydrophilic self-cleaning coating compositions, superhydrophilic self-cleaning glass and preparation method thereof.Superhydrophilic self-cleaning coating composition of the present invention has the anti-reflection, weather-proof of excellent super hydrophilicity and Photocatalytic Degradation Property, and shows good self-cleaning performance, while coating process constructing operation is simple, it can be achieved that multi-field, large-area construction application.
Description
Technical field
The present invention relates to self-cleaning glass fields, and in particular to a kind of superhydrophilic self-cleaning coating composition, it is super hydrophilic from
Clean coating, superhydrophilic self-cleaning glass and preparation method thereof.
Background technique
The development of self-cleaning glass is mainly by coating one layer with self-cleaning performance in glass surface and having certain
The coating of anti-reflection effect.TiO is found from Fujishima and Honda2Electrode being capable of photodegradation water generation this phenomenon more than 40 of hydrogen
Since year, people are to TiO2Application in terms of solar energy conversion and clean environment conducts extensive research.In numerous TiO2's
In, a most interesting and attractive research is exactly about TiO2The research of self-cleaning surface, this surface can benefits
The cleaning of itself is kept with sunlight and natural precipitation, so as to save time, expense and the energy of maintenance, purification is empty
Gas reduces environmental pollution.
The mechanism of self-cleaning glass anti-pollution is exactly that the automatic cleaning coating of glass surface is mainly by Detitanium-ore-type TiO2Composition,
Detitanium-ore-type TiO2With very high photocatalytic activity, TiO2It is excited by the ultraviolet light in sunlight, can decompose and be stained on its table
The greasy dirt in face.TiO2Superhydrophilic be exactly it under the excitation of ultraviolet light, the water droplet on surface can spread, flow, such water meeting
Take away the dirty of surface.Regrettably, TiO2There is relatively high refraction coefficient (Detitanium-ore-type TiO2N ≈ 2.52), when being applied
In solar battery, greenhouse, cladding glass, TiO2Content must be reduced to lower range and reduce the light of coating with this
Refractive index, but TiO2Amount reduce after, the self-cleaning performance of coating certainly will be will affect.Therefore, by adjusting photocatalytic
Balance between permeability, to prepare automatically cleaning and antireflective TiO2Coating is widely studied.At the same time, due to SiO2Tool
There is smaller refraction coefficient (n ≈ 1.5), it will usually by TiO2Powder and SiO2Colloidal sol is compound to be prepared with Superhydrophilic, anti-
The coating of reflection, there are preparation method complexity, hydrophilic effect are bad, saturating for existing this TiO2 and SiO2 compound self-cleaning coating
Photosensitiveness is poor, coating surface out-of-flatness and weatherability are poor.
Currently, the preparation method of superhydrophilic self-cleaning coating mainly include template, particle-filled method, sol-gal process,
Magnetron sputtering method, LBL self-assembly method, plasma technique etc., but these preparation methods are there are complex process, condition is harsh,
The problems such as equipment valuableness, high production cost, to be unfavorable for the actual use of superhydrophilic self-cleaning coating.
Based on the above analysis, it would be highly desirable to develop it is a kind of with excellent super hydrophilicity, Photocatalytic Degradation Property it is anti-reflection, weather-proof
And the self-cleaning coating that production cost is low, and then the coating construction method of simple possible is developed, high-performance self-cleaning glass is made,
Promote the development of self-cleaning glass technology.
Summary of the invention
That there are hydrophilic effects the purpose of the invention is to overcoming the coating on self-cleaning glass surface in the prior art is bad,
Translucency is poor, coating surface " floating ", weatherability is poor and prepares the problems such as complicated, provides a kind of superhydrophilic self-cleaning coating
Composition, superhydrophilic self-cleaning glass and preparation method thereof.
To achieve the goals above, one aspect of the present invention provides a kind of superhydrophilic self-cleaning coating composition, contains modification
Nano silicon dioxide sol, anatase type nano titanium dioxide sol and water；On the basis of the amount of the total material of solid-state colloidal sol, institute
The molar fraction for stating modified manometer silicon dioxide colloidal sol is 40-70%, mole of the anatase type nano titanium dioxide sol
Score is 30-60%.
Second aspect of the present invention provides a kind of preparation method of superhydrophilic self-cleaning coating composition, comprising the following steps:
(1) preparation of modified manometer silicon dioxide colloidal sol: in acid condition, water droplet is added to ethyl orthosilicate, pure and mild
In the mixture of silane coupling agent, modified manometer silicon dioxide colloidal sol is obtained；
(2) preparation of superhydrophilic self-cleaning coating: by modified manometer silicon dioxide colloidal sol obtained and anatase type nano
TiO 2 sol, water mixing, obtain superhydrophilic self-cleaning coating.
Third aspect present invention provides a kind of superhydrophilic self-cleaning coating composition being prepared by above-mentioned method.
Fourth aspect present invention provides a kind of superhydrophilic self-cleaning glass, and structure successively includes the super parent from top to bottom
The coating that water self-cleaning coating composition is formed, glass plate.
Fifth aspect present invention provides a kind of preparation method of superhydrophilic self-cleaning glass, and the superhydrophilic self-cleaning is applied
Feed composition uniformly rubs or is sprayed on glass pane surface, dry.
Sixth aspect present invention provides the superhydrophilic self-cleaning glass being prepared by above-mentioned method.
Compared with prior art, superhydrophilic self-cleaning coating composition of the present invention not only has shrinking percentage low, adhesion strength
The characteristics of height, waterproof, and it is anti-reflection, weather-proof with excellent super hydrophilicity and Photocatalytic Degradation Property, while showing again
Good self-cleaning performance meets glass coating automatically cleaning application performance requirement.
The coating process of superhydrophilic self-cleaning coating composition of the invention has constructing operation simple, and coating surface is smooth
It is smooth, and the photopermeability of film can be improved to a certain extent, it provides strong support for the manufacture of self-cleaning glass；But also it can
It realizes normal temperature cure, limitation of the conventional curing mode to practical application area is breached, to can realize that multi-field, large area is applied
Work application.
Superhydrophilic self-cleaning glass of the invention has excellent Superhydrophilic, anti-reflection property and photocatalysis Decomposition organic matter special
Property, it can be widely used for civilian glass, industrial glass field.
Detailed description of the invention
Fig. 1 is SiO2With TiO2Between influence of the different molar fractions to coating visible light (450-500nm) transmitance.
Fig. 2 is the adhesive force test chart of super hydrophilic nano self-cleaning paint composition coating.
Fig. 3 is the microscopic appearance test chart of super hydrophilic nano self-cleaning paint composition coating, wherein (a) is super hydrophilic
Self-cleaning coat surface SEM figure；(b) be super-hydrophilic self-cleaning coating surface TEM figure；It (c) is super-hydrophilic self-cleaning coatings cross-section
SEM figure；(d) be super-hydrophilic self-cleaning coating surface AFM figure.
Fig. 4 is the AFM datagram of super-hydrophilic self-cleaning coating cross sections.
Fig. 5 is the test chart that super hydrophilic nano self-cleaning coating ultraviolet catalytic decomposes rhodamine B.
Fig. 6 is super hydrophilic nano self-cleaning coating using effect test chart.
Specific embodiment
The endpoint of disclosed range and any value are not limited to the accurate range or value herein, these ranges or
Value should be understood as comprising the value close to these ranges or value.For numberical range, between the endpoint value of each range, respectively
It can be combined with each other between the endpoint value of a range and individual point value, and individually between point value and obtain one or more
New numberical range, these numberical ranges should be considered as specific open herein.
The present invention provides a kind of superhydrophilic self-cleaning coating composition, contains modified manometer silicon dioxide colloidal sol, anatase
Type nano titanic oxide sol and water；On the basis of the amount of the total material of solid-state colloidal sol, the modified manometer silicon dioxide colloidal sol
Molar fraction be 40-70%, the molar fraction of the anatase type nano titanium dioxide sol is 30-60%.
Inventor for self-cleaning glass surface in the prior art coating that there are hydrophilic effects is bad, translucency is poor,
The problem of coating surface floating and weatherability difference has made intensive studies, it was found that TiO2With SiO2Different molar fractions pair
The influence of contact angle and visible light transmittance is shown in Table SiO in 12Influence and Fig. 1 of the molar fraction to coating Superhydrophilic
SiO2With TiO2Influence of the different molar fractions to coating visible light (450-500nm) transmitance.
Table 1
From table 1 it follows that with SiO2The rising of molar fraction, the water contact angle of coating first becomes smaller to become larger afterwards, when
SiO2Molar fraction at 40%~70%, water contact angle be lower than 10 °.
From figure 1 it appears that with SiO2Amount increases, and visible light (450-500nm) transmitance of coating is in increase
Trend works as SiO2Molar fraction when being 40%~100%, transmitance is more than 100%, and coating is with apparent antireflective effect.
From test result as can be seen that the SiO with lower refraction coefficient2Ti O can be improved in the addition of (refraction coefficient n ≈ 1.5)2It applies
Transmitance of the layer to visible light.
To sum up, inventor sought between coating Superhydrophilic, visible light transmittance and photocatalysis efficiency one it is suitable
Suitable equalization point, compromise have selected proportion of the molar fraction of modified manometer silicon dioxide colloidal sol between 40-70%, have been conducive to reality
The unification of existing Superhydrophilic and high transparency and excellent photocatalysis performance, and then realized in field in civilian, industrial glass
The super hydrophilic unification with self-cleaning performance of self-cleaning glass.
Superhydrophilic self-cleaning coating composition of the present invention is formed by the component cross-link with curing activity, is not only had
The characteristics of shrinking percentage is low, and adhesion strength is high, waterproof, weatherability, and there is Superhydrophilic, after film forming water contact angle less than 8 °,
And there is very high transmitance in visible-range, visible region light transmittance is greater than 100% after film forming, does not influence the light of glass
Performance is learned, while showing good self-cleaning performance again, meets glass coating automatically cleaning application performance requirement.
According to the present invention, the modified manometer silicon dioxide colloidal sol molar fraction for example, can for 40%, 50%,
60%, 70% and these point values in the range that is constituted of any two in arbitrary value, improved simultaneously in order to further super
Hydrophily and light transmission rate, preferably 50-60%.
According to the present invention, the modified manometer silicon dioxide colloidal sol is by ethyl orthosilicate, dehydrated alcohol, silane coupled
Agent hydrolyzes in acid condition to be made, and the modified manometer silicon dioxide colloidal dispersion being consequently formed is stablized.
According to the present invention, the silane coupling agent is selected from γ-glycidyl ether oxygen propyl trimethoxy silicane, γ-ammonia third
One of ethyl triethoxy silicane alkane and γ-(methacryloxypropyl) propyl trimethoxy silicane are a variety of.
According to the present invention, the anatase type nano titanium dioxide sol include anatase titanium dioxide nanoparticle and
Solvent, wherein the weight percent of the anatase titanium dioxide nanoparticle is 0.1~20%, preferably 0.5-1%；
In the present invention, for human body and environment the considerations of, solvent is typically chosen non-toxic or low-toxic environment-friendly type solvent.
According to the present invention, the solvent can be selected from water or alcohols.Preferably, the water can be deionized water；Preferably, institute
It states alcohols and is selected from one of methanol, ethyl alcohol, isopropanol, glycerine and n-butanol or a variety of.
The present invention also provides a kind of preparation methods of superhydrophilic self-cleaning coating composition, comprising the following steps:
(1) preparation of modified manometer silicon dioxide colloidal sol: in acid condition, water droplet is added to ethyl orthosilicate, pure and mild
In the mixture of silane coupling agent, modified manometer silicon dioxide colloidal sol is obtained；
(2) preparation of superhydrophilic self-cleaning coating: by modified manometer silicon dioxide colloidal sol obtained and anatase type nano
TiO 2 sol, water mixing, obtain superhydrophilic self-cleaning coating.
According to the present invention, in step (1), on the basis of the total weight of the modified manometer silicon dioxide colloidal sol, it is described just
The dosage of silester be 15-25wt%, for example, can for 15wt%, 16wt%, 17wt%, 18wt%, 19wt%,
The range that any two in 20wt%, 21wt%, 22wt%, 23wt%, 24wt%, 25wt% and these point values are constituted
In arbitrary value；The dosage of the alcohol be 50-60wt%, such as can for 50wt%, 51wt%, 52wt%, 53wt%,
Any two in 54wt%, 54wt%, 55wt%, 56wt%, 57wt%, 58wt%, 59wt%, 60wt% and these point values
Arbitrary value in a constituted range；The dosage of the silane coupling agent be 2-10wt%, such as can for 2wt%,
Any two institute structure in 3wt%, 4wt%, 5wt%, 6wt%, 7wt%, 8wt%, 9wt%, 10wt% and these point values
At range in arbitrary value；The dosage of the water be 20-30wt%, such as can for 20wt%, 21wt%, 22wt%,
In 23wt%, 24wt%, 24wt%, 25wt%, 26wt%, 27wt%, 28wt%, 29wt%, 30wt% and these point values
The range that is constituted of any two in arbitrary value.
In the present invention, during ethyl orthosilicate, pure and mild silane coupling agent being mixed preferably under stirring conditions
It carries out, condition and equipment about stirring are not particularly limited, and can be the conventional selection of this field.
In the present invention, water is added dropwise with certain drop rate, can control modified manometer silicon dioxide aerosol product knot
Structure.According to the present invention, the drop rate of the water be 0.05-0.15mL/s, for example, can for 0.05mL/s, 0.06mL/s,
0.07mL/s、0.08mL/s、0.09mL/s、0.10mL/s、0.11mL/s、0.12mL/s、0.13mL/s、0.14mL/s、
The arbitrary value in range that any two in 0.15mL/s and these point values are constituted；The water can be deionized water.?
In the present invention, preferably carried out under stirring conditions during water is added dropwise, the condition and equipment about stirring do not limit specifically
It is fixed, it can be the conventional selection of this field.
According to the present invention, it is 2-3 that the acid condition, which is pH value, and the selection about the acid for adjusting pH value does not limit specifically
It is fixed, for example, can be hydrochloric acid, sulfuric acid or nitric acid, preferably hydrochloric acid, wherein HCl content is 36~38wt% in hydrochloric acid, preferably
For 36.5wt%.
It according to the present invention, further include the modified manometer silicon dioxide colloidal sol that will obtain in 50-60 DEG C of constant temperature in step (1)
The modified manometer silicon dioxide colloidal sol of homogeneous transparent can be made in conditioned response 5-7h.
The present invention also provides a kind of superhydrophilic self-cleaning coating compositions being prepared by above-mentioned method.
To sum up, the preparation of superhydrophilic self-cleaning coating composition formula has implementing process simple in the present invention, reacts item
Part is mild, reproducible, the controllable feature of product structure.
The present invention also provides a kind of superhydrophilic self-cleaning glass, structure successively includes described super hydrophilic from clear from top to bottom
The coating that clean coating composition is formed, glass plate.
The present invention also provides a kind of preparation methods of superhydrophilic self-cleaning glass, by the superhydrophilic self-cleaning Coating material composition
Object uniformly rubs, sprays or scratches in glass pane surface, dry.
The viscosity of the super hydrophilic nano self-cleaning paint composition of the present invention is very low, and coating is easy to sagging.Therefore, with routine
Coating method cannot all apply out smooth, transparent coating.This is because conventional brushing, spraying can all cause substrate surface to apply
Layer it is uneven, apparent opaque trace will be left after coating is dry.
According to the present invention, the method for the erasing is manual swabbing process.In the preferred case, the manual swabbing process be by
The superhydrophilic self-cleaning coating composition is sufficiently infiltrated in the edge of high-density sponge, then using uniformly erasing exists by hand
Glass pane surface.Wherein, high-density sponge refers to that the weight of every cubic metre of sponge reaches 45 kilograms or more of sponge, this sponge
With certain shape and higher toughness, a small amount of coating can be drawn with dropper, dripped in the edge of high-density sponge, repeatedly
Repeatedly, sample is made sufficiently to infiltrate the edge of sponge, erasing can obtain the coating of flat transparent by hand, and the present invention is super close
Water self-cleaning coating composition solid content only has 1%, and viscosity is close to water, if may slightly be exerted oneself using general sponge,
A large amount of coating will be squeezed out, so as to cause serious sagging phenomenon.
According to the present invention, it is 0.2-0.5mm (such as the bore of spray gun is 0.3mm) that the method for the spraying, which is selected bore,
Spray gun spraying.The coating content that this kind of method sprays out is more much smaller than the coating content that general spray gun spraying goes out, with this painting
Mode for cloth not only it is possible to prevente effectively from sagging, but also can carry out large-area construction.
According to the present invention, the method for the blade coating is that soft rag is fixed on the blade for washing glass slicker, is dipped
A small amount of superhydrophilic self-cleaning coating composition blade coating.
According to the present invention, the condition of the drying is that under room temperature, dry 25-35min, i.e. normal temperature condition can be realized
Solidification.As it can be seen that the formation of cross-linked network can carry out at normal temperature in system of the present invention, it is different from general coating products and needs
Hot conditions Xia Cainengshi functional group reacts, crosslinking curing.
To sum up, the coating process of high transparency superhydrophilic self-cleaning coating composition of the present invention has constructing operation simple, applies
Layer surface flat transparent, and the photopermeability of film can be improved to a certain extent, strong branch is provided for the manufacture of self-cleaning glass
Support；And can also be achieved normal temperature cure, limitation of the conventional curing mode to practical application area is breached, so that more necks can be realized
Domain, large-area construction application.
The present invention also provides a kind of superhydrophilic self-cleaning glass prepared by the above method.
To sum up, superhydrophilic self-cleaning glass of the invention has excellent Superhydrophilic, anti-reflection property and weatherability, in the sun
Under the irradiation of light, various organic pollutants can be effectively decomposed, air is purified, reduces environmental pollution, before there is application well
Scape and social value.
The present invention will be described in detail by way of examples below.
In following embodiment, it is related to test method and raw material is as follows:
Water contact angle: referring to the contact angle test method in GB/T 23764-2009, when measuring contact angle, water drop contact
After test piece forms drop, measured in 3s~5s immediately.
Visual field transmitance: being measured by GB/T29501-2013 method, using purchased from Pu Xi all purpose instrument Co., Ltd type
It number is measured for 722 instrument.
Waterproofness: it is measured by GB/T31815-2015 test method.
Solid content: it referring to GB T/2793-1995 test method, takes the weighing container of 3 dried and cleans to weigh (G0), does 3
A parallel laboratory test takes 2-2.5g sample respectively, weighs (G is wet), puts it into and heats 4h in 105 DEG C of air blast insulating boxs.It closes and dries
Case is cooled to room temperature, and is taken out, weighing (G is dry).Solid content X (%) is calculated as follows.X=(G does-G0) × 100/ (wet-G0 of G)
Viscosity: being measured by GB/T2794-1995, selectes 21# rotor, revolving speed 50r/min.
Weatherability: being carried out by the regulation of circulation A in GB/T 1865-2009, evaluation as a result by GB/T1766-2008 into
Row.Theoretical foundation: light source used in aging is less than the 400nm either ultraviolet light of provision wavelengths such as 340nm, coating can be promoted to add
Fast aging.Concrete operation step: artificial weathering aging is carried out to coating with the xenon arc light filtered through optical filter, blackboard temperature:
50~60 DEG C, air themperature in experiment casing: 38 ± 3 DEG C.Ageing-resistant equivalent time estimation: popular to think to be equivalent to 1 in 100 hours
Year.
In case of no particular description, raw materials used to be all made of commercial product.
Embodiment 1
1, the preparation of modified manometer silicon dioxide colloidal sol
By 40.00gTEOS, 130.00g dehydrated alcohol, it is 2- with salt acid for adjusting pH that 8.49g silane coupling agent, which is uniformly mixed,
3, under agitation, 59.81g deionized water is added dropwise with the drop rate of 0.1mL/s, the isothermal reaction 6h at 55 DEG C, system
Obtain the modified manometer silicon dioxide sol gel of homogeneous transparent.
2, the preparation of superhydrophilic self-cleaning coating composition
The anatase type nano titanium dioxide sol that 25g mass fraction is 0.5% is mixed with above-mentioned 1g modified silicasol,
It is diluted with water, super hydrophilic nano self-cleaning paint is made.
3, the adhesive force of super hydrophilic nano self-cleaning paint composition coating, microscopic appearance and Photocatalytic Degradation Property test
(1) the adhesive force test of coating
The adhesive force of super hydrophilic nano self-cleaning paint composition obtained is tested using cross-hatching.It can be with from Fig. 2
Find out, the adhesive force of coating is the superlative degree: 0 grade.
(2) the microscopic appearance test of coating
Using the microscopic appearance of scanning electron microscope and atomic force microscope testing coating, Fig. 3,4 are seen.
As can be seen that coating surface particle size is smaller and be evenly distributed from Fig. 3-(a), TiO2It is evenly distributed on SiO2
In matrix, illustrate that super hydrophilic nano self-cleaning paint composition can form continuous, more smooth coating.It can be with from Fig. 3-(b)
Find out, crystalline state TiO is contained in super hydrophilic nano self-cleaning paint composition2, interplanar distance 0.35nm.It can from Fig. 3-(c)
To find out, super hydrophilic nano self-cleaning paint composition is coated on glass using erasing or spray coating method, coating with a thickness of 40-
50nm.As can be seen that coating surface is uniform-distribution with nano particle, coating layer thickness from the AFM test chart of Fig. 3-(d) and Fig. 4
In tens nanometer.
(3) coating ultraviolet catalytic decomposes the test of rhodamine B
By super hydrophilic nano self-cleaning paint composition erasing obtained after quartz glass on piece, air drying 20min,
Quartz glass plate is immersed in rhodamine B solution and is then taken out, rhodamine B concentration is 10ppm, and it is ultraviolet that painting is placed on 252nm
It is irradiated under light.
From fig. 5, it can be seen that coating, in 0min, there are wave crests at 552nm.After 30min, coating sample pair
100% has been had reached in the degradation rate of rhodamine B (characteristic absorption peak 552nm), there is extraordinary photocatalysis effect.
(4) super hydrophilic nano self-cleaning coating using effect test
By super hydrophilic nano self-cleaning paint erasing obtained on clean window-glass, air drying, in order to carry out
Comparison, half border region of the right side of window-glass are coated with self-cleaning coating.As seen from Figure 6, after having rained, discovery is coated with super hydrophilic from clear
Half border region of the right side of clean coating composition still maintains clean, transparent, meanwhile, glass surface can also be antifog.Illustrate of the invention
Superhydrophilic self-cleaning coating composition has obviously automatically cleaning and anti-fog effect.
By super hydrophilic nano self-cleaning paint erasing obtained in photovoltaic panel open air, after tested, after having rained, discovery is coated with
The region of superhydrophilic self-cleaning coating composition still maintains clean, transparent.
4, the preparation of superhydrophilic self-cleaning glass
Appropriate super hydrophilic nano self-cleaning paint sample drop is drawn in the edge of high-density sponge with dropper, it is repeatedly several
It is secondary, so that sample is sufficiently infiltrated the edge of sponge, using method is rubbed by hand, sample is uniformly coated in glass pane surface, room
The dry 30min of temperature, is made self-cleaning anti-reflection super hydrophilic glass.
Embodiment 2
1, the preparation of modified manometer silicon dioxide colloidal sol
By 40.00g TEOS, 111.91g dehydrated alcohol, 7.59g silane coupling agent is uniformly mixed, and is with salt acid for adjusting pH
2-3 53.45g deionized water is added dropwise with the drop rate of 0.1mL/s, the isothermal reaction 6h at 55 DEG C under agitation,
The modified manometer silicon dioxide colloidal sol of homogeneous transparent is made.
2, the preparation of superhydrophilic self-cleaning coating composition
The anatase type nano titanium dioxide sol that 15g mass fraction is 0.5% is mixed with above-mentioned 1g modified silicasol,
It is diluted with water, super hydrophilic nano self-cleaning paint is made.
3, the preparation of superhydrophilic self-cleaning glass
Appropriate super hydrophilic nano self-cleaning paint sample drop is drawn in the edge of high-density sponge with dropper, it is repeatedly several
It is secondary, so that sample is sufficiently infiltrated the edge of sponge, using method is rubbed by hand, sample is uniformly coated in glass pane surface, room
The dry 30min of temperature, is made self-cleaning anti-reflection super hydrophilic glass.
Embodiment 3
1, the preparation of modified manometer silicon dioxide colloidal sol
By 40.00gTEOS, 97.27g dehydrated alcohol, it is 2- with salt acid for adjusting pH that 6.86g silane coupling agent, which is uniformly mixed,
3, under agitation, 48.29g deionized water is added dropwise with the drop rate of 0.1mL/s, the isothermal reaction 6h at 55 DEG C, system
Obtain the modified manometer silicon dioxide colloidal sol of homogeneous transparent.
2, the preparation of superhydrophilic self-cleaning coating composition
The anatase type nano titanium dioxide sol that 37g mass fraction is 0.5% is mixed with above-mentioned 1g modified silicasol,
It is diluted with water, super hydrophilic nano self-cleaning paint is made.
3, the preparation of superhydrophilic self-cleaning glass
Appropriate super hydrophilic nano self-cleaning paint sample drop is drawn in the edge of high-density sponge with dropper, it is repeatedly several
It is secondary, so that sample is sufficiently infiltrated the edge of sponge, using method is rubbed by hand, sample is uniformly coated in glass pane surface, room
The dry 30min of temperature, is made self-cleaning anti-reflection super hydrophilic glass.
Embodiment 4
1, the preparation of modified manometer silicon dioxide colloidal sol
By 40gTEOS, 104.21mL dehydrated alcohol, it is 2-3 with salt acid for adjusting pH that 7.20g silane coupling agent, which is uniformly mixed,
Under agitation, 50.74g deionized water is added dropwise with the drop rate of 0.1mL/s, the isothermal reaction 6h at 55 DEG C is made
The modified manometer silicon dioxide colloidal sol of homogeneous transparent.
2, the preparation of superhydrophilic self-cleaning coating composition
The anatase type nano titanium dioxide sol that 11g mass fraction is 0.5% is mixed with above-mentioned 1g modified silicasol,
It is diluted with water, super hydrophilic nano self-cleaning paint is made.
3, the preparation of superhydrophilic self-cleaning glass
Appropriate super hydrophilic nano self-cleaning paint sample drop is drawn in the edge of high-density sponge with dropper, it is repeatedly several
It is secondary, so that sample is sufficiently infiltrated the edge of sponge, using method is rubbed by hand, sample is uniformly coated in glass pane surface, room
The dry 30min of temperature, is made self-cleaning anti-reflection super hydrophilic glass.
Test case
(1) solid content of super hydrophilic nano self-cleaning paint is measured referring to GB T/2793-1995 method, and viscosity presses GB/
T2794-1995 measurement, weatherability: being carried out by the regulation of circulation A in GB/T 1865-2009, and GB/T is pressed in evaluation as a result
1766-2008 is carried out, and measurement result is shown in Table 2.
(2) the water contact angle water contact angle of superhydrophilic self-cleaning glass coating is referring to the contact angle in GB/T23764-2009
Test method, it is seen that area's transmitance is measured by GB/T29501-2013 method, and measurement result is shown in Table 2.
(3) self-cleaning coating performance indicator require, the measured value of relevant criterion and embodiment 1, measurement result is shown in Table 3.
Table 2
Table 3
Can be seen that from the result of table 2 and table 3 has apparent self-cleaning effect using the embodiment of the present invention 1-4
With excellent weatherability, water resistance, alkali resistance, adhesion performance etc..Product of the present invention ageing-resistant performance has passed through national standard (GB/T
Defined 600h test in 31815-2015).
The preferred embodiment of the present invention has been described above in detail, and still, the present invention is not limited thereto.In skill of the invention
In art conception range, can with various simple variants of the technical solution of the present invention are made, including each technical characteristic with it is any its
Its suitable method is combined, and it should also be regarded as the disclosure of the present invention for these simple variants and combination, is belonged to
Protection scope of the present invention.
Claims (12)
1. a kind of superhydrophilic self-cleaning coating composition, which is characterized in that contain modified manometer silicon dioxide colloidal sol, Detitanium-ore-type
Nano titanic oxide sol and water；On the basis of the amount of the total material of solid-state colloidal sol, the modified manometer silicon dioxide colloidal sol
Molar fraction is 40-70%, and the molar fraction of the anatase type nano titanium dioxide sol is 30-60%.
2. superhydrophilic self-cleaning coating composition according to claim 1, which is characterized in that the modified nano-silica
The molar fraction of silica solution is 50-60%.
3. superhydrophilic self-cleaning coating composition according to claim 1 or 2, which is characterized in that the modified Nano two
Silica sol is to hydrolyze to be made in acid condition by ethyl orthosilicate, dehydrated alcohol, silane coupling agent.
4. superhydrophilic self-cleaning coating composition according to claim 3, which is characterized in that the silane coupling agent is selected from
γ-glycidyl ether oxygen propyl trimethoxy silicane, gamma-aminopropyl-triethoxy-silane and γ-(methacryloxypropyl) propyl
One of trimethoxy silane is a variety of.
5. superhydrophilic self-cleaning coating composition according to claim 1 or 2, which is characterized in that the Detitanium-ore-type is received
Rice TiO 2 sol includes anatase titanium dioxide nanoparticle and solvent, wherein the anatase titanium dioxide is received
The weight percent of rice corpuscles is 0.1~20%, preferably 0.5-1%；
Preferably, the solvent is selected from water or alcohols；
Preferably, the alcohols is selected from one of methanol, ethyl alcohol, isopropanol, glycerine and n-butanol or a variety of.
6. a kind of preparation method of the superhydrophilic self-cleaning coating composition as described in any one of claim 1-5, special
Sign is, comprising the following steps:
(1) preparation of modified manometer silicon dioxide colloidal sol: in acid condition, water droplet is added to ethyl orthosilicate, pure and mild silane
In the mixture of coupling agent, modified manometer silicon dioxide colloidal sol is obtained；
(2) preparation of superhydrophilic self-cleaning coating: by modified manometer silicon dioxide colloidal sol obtained and anatase type nano dioxy
Change titanium colloidal sol, water mixing, obtains superhydrophilic self-cleaning coating.
7. the preparation method of superhydrophilic self-cleaning coating composition according to claim 6, which is characterized in that step (1)
In, on the basis of the total weight of the modified manometer silicon dioxide colloidal sol, the dosage of the ethyl orthosilicate is 15-25wt%,
The dosage of the alcohol is 50-60wt%, and the dosage of the silane coupling agent is 2-10wt%, and the dosage of the water is 20-
30wt%；
Preferably, the drop rate of the water is 0.05-0.15mL/s；
Preferably, it is 2-3 that the acid condition, which is pH value,.
8. the preparation method of superhydrophilic self-cleaning coating composition according to claim 6 or 7, which is characterized in that step
It (1) further include that the modified manometer silicon dioxide colloidal sol that will be obtained reacts 5-7h in 50-60 DEG C of constant temperature in.
9. a kind of superhydrophilic self-cleaning Coating material composition that the method according to any one of claim 6-8 is prepared
Object.
10. a kind of superhydrophilic self-cleaning glass, which is characterized in that its structure successively includes in claim 1-5 and 9 from top to bottom
The coating that superhydrophilic self-cleaning coating composition described in any one is formed, glass plate.
11. a kind of preparation method of superhydrophilic self-cleaning glass as claimed in claim 10, which is characterized in that by claim
Superhydrophilic self-cleaning coating composition described in any one of 1-5 and 9 uniformly rubs, sprays or scratches in glass pane surface,
It is dry；
Preferably, the method for the erasing is manual swabbing process；
It is highly preferred that the craft swabbing process is by superhydrophilic self-cleaning coating described in any one of claim 1-5 and 9
Composition infiltration is in the edge of sponge, then using uniform erasing by hand in glass pane surface；
Preferably, the method for the spraying is the spray gun spraying that selected bore is 0.2-0.5mm；
Preferably, the method for the blade coating is that rag is fixed on the blade for washing glass slicker, dips claim 1-5 and 9
Any one of described in superhydrophilic self-cleaning coating composition blade coating；
Preferably, the condition of the drying is dry 25-35min under room temperature.
12. a kind of superhydrophilic self-cleaning glass that the method according to claim 11 is prepared.
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