CN109517522A - A kind of super-hydrophobic self-cleaning coating for building - Google Patents
A kind of super-hydrophobic self-cleaning coating for building Download PDFInfo
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- CN109517522A CN109517522A CN201811379534.4A CN201811379534A CN109517522A CN 109517522 A CN109517522 A CN 109517522A CN 201811379534 A CN201811379534 A CN 201811379534A CN 109517522 A CN109517522 A CN 109517522A
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- super
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- hydrophobic
- mass fraction
- hydrophobic self
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- 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
A kind of building super-hydrophobic self-cleaning coating of the present invention, Perhydropolysilazane quality that methyltriethoxysilane that heptadecafluorodecyl triethoxysilane that it is 2%~10% by mass fraction, mass fraction are 1%~10%, mass fraction are 1%~10%, mass fraction are 2%~15% solia particle, and surplus is that solvent dispersion mixing forms.Building super-hydrophobic self-cleaning coating provided by the invention has the advantage that the ultra-hydrophobicity of prepared super-hydrophobic coat is stablized, non-aging failure, and works normally under the bad working environments such as soda acid, high temperature, intensive ultraviolet；Energy normal temperature cure, it is of less demanding to execution conditions, it is suitable for various buildings.
Description
Technical field
The present invention relates to a kind of super-hydrophobic self-cleaning coating for building, are coated with the super-hydrophobic self-cleaning coating in building surface
Afterwards, the super-hydrophobic self-cleaning coating that energy normal temperature cure is formed.
Background technique
Wetability is the critical nature of the surface of solids, is generally characterized with the contact angle of drop and the surface of solids.Work as water
Drop and the contact angle of the surface of solids are greater than 150 °, which is referred to as super hydrophobic surface.Such as using lotus leaf as a variety of of representative
Plant leaf blade surface, feather of aquatic bird etc..Super hydrophobic material has many unique surface propertys, such as automatically cleaning, super-hydrophobic
Property etc., thus it has broad application prospects in production and life, as automatically cleaning builds surface.
In recent years, super hydrophobic surface causes the extensive concern of scientist, the artificial new method for manufacturing super hydrophobic surface
It continuously emerges.Current preparation method is broadly divided into two classes: first is that being modified into low-surface-energy material with micro nano structure
Surface；Second is that constructing micro-nano nanostructured layers on low-surface-energy material surface.Specific method includes wet-chemical, electrochemistry quarter
Erosion, electrochemical deposition, vapor deposition, electrostatic spinning etc..Although above method can prepare super hydrophobic surface, mostly
The process of method is complex, requires special equipment greatly, energy consumption and the cost is relatively high, is all unfavorable for building surface and apply
Work.It is not sufficiently stable in addition, the super hydrophobic surface of existing method preparation generally has, easy to aging, vulnerable, tolerance is more
The disadvantages of for deficiency.
Summary of the invention
The present invention provides a kind of not only easy to operate the problems of in the prior art for above-mentioned, is easy to exterior wall and applies
Work, and the external wall super hydrophobic coating of ultra-hydrophobicity stabilization, acid and alkali-resistance, high temperature resistant, UV resistant, super-hydrophobic painting
Layer and preparation method thereof.
A kind of super-hydrophobic self-cleaning coating for building of the present invention, the 17 fluorine last of the ten Heavenly stems that it is 2%~10% by mass fraction
The perhydro that methyltriethoxysilane that ethyl triethoxy silicane alkane, mass fraction are 1%~10%, mass fraction are 1%~10% is poly-
Silazane quality, the Solid micro that mass fraction is 2%~15%, surplus are that solvent dispersion mixing forms.
Further the effect of the invention using heptadecafluorodecyl triethoxysilane is mentioned in the coating after paint solidification
For the fluorocarbon group of hydrophobic oleophobic low-surface-energy.
Further the present invention using methyltriethoxysilane be for paint solidification after coating provide low-surface-energy and
Has the trifunctional silane of toughness.
Further the present invention is in order to suitable under coating after application cryogenic conditions using great active Perhydropolysilazane
Sharp film-forming, silicon nitrogen groups can also easily be reacted with substrate surface hydroxyl in main chain mechanism, increase coating adhesion and
Physical property, absorbing steam in air the ammonia of hydrolysis release occurs is curing catalysts again.
Further using solid, micro-, nano particle is in order to which cured coating can be formed as convex to coating after application to the present invention
Structure increases hydrophobic oleophobic effect, improves self-cleaning ability.
Further using solid, micro-, nano particle is 10 ~ 100nm of partial size grades and 0.4 ~ 2 μm of partial size to the present invention, micron particles
It is 1:1 with nanoparticle weight ratio.The solid granulates are in inertia silica, inertia zinc oxide or inert alumina particle
One or more mixing, solid particle are handled by hydrophobicity.
The solvent that the further present invention uses is nonpolarity and adverse chemical reaction dissolvent cannot occur with component, can be
Benzene,toluene,xylene, hexamethylene, ethyl acetate, solvent naphtha etc., can one or more kinds of mixed solvents.
Building super-hydrophobic self-cleaning preparation method for coating of the present invention is: according to mass fraction ratio, each component mixing is weighed,
It is uniform that with ultrasonic dispersing machine dispersion mixing is carried out in closed container under room temperature, is saved in sealing container.
Building super-hydrophobic self-cleaning coating provided by the invention has the advantage that the super thin of prepared super-hydrophobic coat
It is aqueous to stablize, non-aging failure, and worked normally under the bad working environments such as soda acid, high temperature, intensive ultraviolet；It can room temperature
Solidification, it is of less demanding to execution conditions, it is suitable for various buildings.
In order to make those skilled in the art more fully understand technical solution of the present invention, below by specific embodiment come into
One step the present invention is described in detail.
Specific embodiment:
Solid is micro-, prepared by nano particle: first taking particle is 10 ~ 100nm of partial size grades and 0.4 ~ 2 μm of each 1000g of silica of partial size,
Hydrophobic treatment, drying for standby are carried out using hexamethyldisilazane.
Embodiment one: by the methyl triethoxy that quality is 20g heptadecafluorodecyl triethoxysilane, quality is 100g
Perhydropolysilazane quality that silane, quality are 100g, quality are that 150g solid is micro-, nano particle, and quality is 630g dimethylbenzene
30 minutes, as building super-hydrophobic self-cleaning coating are mixed with ultrasonic dispersing machine.
Embodiment two: by the methyl triethoxy that quality is 100g heptadecafluorodecyl triethoxysilane, quality is 100g
Perhydropolysilazane quality that silane, quality are 100g, quality are that 150g solid is micro-, nano particle, and quality is 550g dimethylbenzene
30 minutes, as building super-hydrophobic self-cleaning coating are mixed with ultrasonic dispersing machine.
Embodiment three: by the methyl triethoxy that quality is 100g heptadecafluorodecyl triethoxysilane, quality is 10g
Perhydropolysilazane quality that silane, quality are 100g, quality are that 150g solid is micro-, nano particle, and quality is 640g dimethylbenzene
30 minutes, as building super-hydrophobic self-cleaning coating are mixed with ultrasonic dispersing machine.
Example IV: by the methyl triethoxy that quality is 100g heptadecafluorodecyl triethoxysilane, quality is 100g
Perhydropolysilazane quality that silane, quality are 10g, quality are that 150g solid is micro-, nano particle, 640g dimethylbenzene ultrasound
Wave dispersion machine mixes 30 minutes, as building super-hydrophobic self-cleaning coating.
Embodiment five: by the methyl triethoxy that quality is 100g heptadecafluorodecyl triethoxysilane, quality is 100g
Perhydropolysilazane quality that silane, quality are 100g, quality are that 20g solid is micro-, nano particle, and quality is 680g dimethylbenzene
30 minutes, as building super-hydrophobic self-cleaning coating are mixed with ultrasonic dispersing machine.
The building super-hydrophobic self-cleaning coating of above-described embodiment one~five, the test of coating water contact angle is using Japan after solidification
Interface science company CA-Z150 type contact angle measurement is coordinated to measure.Embodiment one~five is made in performance test
Build super-hydrophobic self-cleaning coating.Smearing method uses spray gun spraying.Test substrate uses 24 × 12 × 6cm plate brick, the test of plate brick
Surface smoothed out by cement slurry painting, for testing after dry 7 days.It is tack-free that surface drying time is subject to coating surface.Droplet
Tumbling effect is that sample is tilted 45 °, is closely dripped with water dropper, and often drip about 0.05g, and droplet rolling visually observes.Such as column
Shown in table
| Embodiment | To water contact angle | Droplet tumbles effect | Surface drying time | Hydrophobicity | Remarks |
| Embodiment one | 142° | Well | 4 hours | Well | |
| Embodiment two | 151° | It is outstanding | 5 hours | It is outstanding | |
| Embodiment three | 151° | It is outstanding | 3 hours | It is outstanding | Coating cracking |
| Example IV | 152° | It is outstanding | 40 hours | It is outstanding | |
| Embodiment five | 110° | Generally | 5 hours | Generally |
Note: hydrophobicity: be to 120 ° of water contact angle < it is general, to 120 ° of water contact angle ﹥ for it is good, be excellent to 150 ° of water contact angle
It is elegant.Reduce trifunctional silane i.e. methyltriethoxysilane amount in embodiment three, coating is crisp after solidification, it is easy to it cracks,
Embodiment 4 reduces Perhydropolysilazane dosage, and coating surface drying time is for a long time.Embodiment five reduces that solid is micro-, nano particle
Amount, coating becomes smaller to water contact angle after solidification, hydrophobic effect decline.In practical applications, example two is taken to build super-hydrophobic self-cleaning
Coating is sprayed on highway barrier and street guideboard, non-sticky after being sprinkled with muddy water.It is observed after one month, is jetted through building super-hydrophobic self-cleaning and applies
Material part is obvious cleaner than the place that do not spray very much.
It is hereby stated that described above facilitate those skilled in the art understand that the invention, but not limit the present invention
The protection scope of creation.Any same replacement described above, modification are improved without disengaging the invention substantive content
Or delete numerous conform to the principle of simplicity and the implementation that carries out, each fall within the protection scope of the invention.
Claims (7)
1. a kind of super-hydrophobic self-cleaning coating for building, it is characterised in that: the 17 fluorine last of the ten Heavenly stems that it is 2%~10% by mass fraction
The perhydro that methyltriethoxysilane that ethyl triethoxy silicane alkane, mass fraction are 1%~10%, mass fraction are 1%~10% is poly-
Silazane quality, mass fraction are 2%~15% solia particle, and surplus is that the dispersion mixing of solvent forms.
2. a kind of super-hydrophobic self-cleaning coating for building according to claim 1, it is characterised in that: 17 fluorine decyl, three second
Oxysilane be for paint solidification after coating provide hydrophobic oleophobic low-surface-energy fluorocarbon group.
3. a kind of super-hydrophobic self-cleaning coating for building according to claim 1, it is characterised in that: the methyltriethoxy silane
Alkane be for paint solidification after coating low-surface-energy be provided have more the trifunctional silane of toughness.
4. a kind of super-hydrophobic self-cleaning coating for building according to claim 1, it is characterised in that: the Perhydropolysilazane tool
There is high activity, can make coating smooth film-forming under cryogenic after application, in Perhydropolysilazane main chain mechanism
Silicon nitrogen groups are easily reacted with substrate surface hydroxyl, increase coating adhesion and physical property, absorb steam in air and water occurs
The ammonia of solution release is curing catalysts again.
5. a kind of super-hydrophobic self-cleaning coating for building according to claim 1, it is characterised in that: the solia particle is micron
And nano particle, the micron, nano particle can be formed as male structure, the male structure in cured coating after coating coating
It can increase hydrophobic oleophobic effect, improve self-cleaning ability.
6. a kind of super-hydrophobic self-cleaning coating for building according to claim 5, it is characterised in that: the solid particle is partial size
The nano particle of 10 ~ 100nm grades of 0.4 ~ 2 μm of grade of micron particles and partial size, micron particles and nanoparticle weight ratio are 1:1.
7. a kind of super-hydrophobic self-cleaning coating for building according to claim 6, it is characterised in that: the solid granulates are lazy
Property silica, inertia zinc oxide or inert alumina particle in one or more kinds of mixing, solid particle passes through hydrophobicity
Processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811379534.4A CN109517522A (en) | 2018-11-20 | 2018-11-20 | A kind of super-hydrophobic self-cleaning coating for building |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811379534.4A CN109517522A (en) | 2018-11-20 | 2018-11-20 | A kind of super-hydrophobic self-cleaning coating for building |
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| CN109517522A true CN109517522A (en) | 2019-03-26 |
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| CN201811379534.4A Pending CN109517522A (en) | 2018-11-20 | 2018-11-20 | A kind of super-hydrophobic self-cleaning coating for building |
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Cited By (4)
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| CN110357883A (en) * | 2019-06-18 | 2019-10-22 | 重庆多次元新材料科技有限公司 | A kind of polyfunctional group purine compound and super-hydrophobic nano material used for building exterior wall and preparation method thereof |
| CN110452615A (en) * | 2019-08-30 | 2019-11-15 | 广东工业大学 | A kind of high temperature resistant non-sticking lining and preparation method thereof |
| CN113444446A (en) * | 2021-06-02 | 2021-09-28 | 佛山市顺德区美的洗涤电器制造有限公司 | Corrosion-resistant coating composition, corrosion-resistant coating, preparation method and application of corrosion-resistant coating, and corrosion-resistant coating |
| CN114058252A (en) * | 2021-12-31 | 2022-02-18 | 福建龙兴九源科技股份有限公司 | Water-based woodenware coating and preparation method thereof |
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| CN114058252A (en) * | 2021-12-31 | 2022-02-18 | 福建龙兴九源科技股份有限公司 | Water-based woodenware coating and preparation method thereof |
| CN114058252B (en) * | 2021-12-31 | 2022-10-11 | 福建龙兴九源科技股份有限公司 | Water-based wood coating and preparation method thereof |
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Application publication date: 20190326 |