CN108912754A - A kind of super-hydrophobic SiO2The preparation method and application of nano functional liquid - Google Patents
A kind of super-hydrophobic SiO2The preparation method and application of nano functional liquid Download PDFInfo
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- CN108912754A CN108912754A CN201810777664.7A CN201810777664A CN108912754A CN 108912754 A CN108912754 A CN 108912754A CN 201810777664 A CN201810777664 A CN 201810777664A CN 108912754 A CN108912754 A CN 108912754A
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
Abstract
The invention discloses a kind of super-hydrophobic SiO2The preparation method of nano functional liquid is related to hydrophobic material technical field, and basic catalyst and esters of silicon acis are added in alcohols solvent, and agitated, reaction, ageing prepare SiO2The dispersion liquid of nano particle；Low-surface-energy is added carries out reaction modification without fluorine organic, prepares super-hydrophobic SiO2Nano functional liquid.Present invention process is simple, and reaction is controllable, low in cost, product favorable dispersibility, has great social value and economic value in industrialization promotion is produced and applied.The present invention also provides a kind of super-hydrophobic SiO2The application of nano functional liquid, super-hydrophobic SiO2Nano functional liquid can be coated on all kinds of substrates such as glass, plastics, ceramics or metal by the methods of spraying, brushing, dip-coating, form based superhydrophobic thin films；For the static contact angle of based superhydrophobic thin films surface and water up to 164.4 degree, roll angle shows excellent super hydrophobic functional down to 1.8 degree.
Description
Technical field
The present invention relates to hydrophobic material technical fields, and in particular to a kind of super-hydrophobic SiO2The preparation method of nano functional liquid
And application.
Background technique
Based superhydrophobic thin films, which refer to, is greater than 150 degree, film of the roll angle less than 10 degree with water drop static contact angle, has anti-
The functions such as water, automatically cleaning, antifouling, thus have broad application prospects in daily life and industrial circle etc..2002, Jiang Lei
Study group confirms that the surfaces such as lotus leaf have the essential reason of ultra-hydrophobicity, is its surface micro-nano coarse structure and low surface
Synergistic effect (the Adv Mater 2002 of energy substance；14:1857-1860).Bionic super-hydrophobic surface utilizes lotus leaf and cicada's wings etc.
The bionic super-hydrophobic self-cleaning principle on surface, by with micro-nano coarse structure surface modification low-surface-energy ingredient or
Lower-surface-free-energy surface constructs the mode of roughness, realizes the super hydrophobic functional of the surface of solids.Due to superhydrophobic characteristic, water droplet is in cunning
The powder dust particle and dirt adhered to it is taken away when from the surface of solids, to realize self-cleaning function.This self-cleaning anti-pollution
Function has great application value in many fields of modern industry and life.Superhydrophobic thin film material can be reduced or avoided
The pollution of the air pollutants such as dust, in high humidity environment and rainy day, because surface dirt reality is taken away in the cohesion of rainwater and tumble due to
Existing self-cleaning function.Super hydrophobic functional film is applied to building glass, can greatly reduce wash number.
In recent years, domestic and foreign scholars utilize bionic super-hydrophobic Principle Exploration artificial super hydrophobic material and super-hydrophobic coat table
The various preparation approachs and technique in face.The method for preparing super-hydrophobic coat at present, such as sol-gel method, phase separation method, template
Method, plasma etching method, chemical vapour deposition technique, electrochemical deposition method, self-assembly method, electrical spinning method, organic inorganic hybridization method
Deng.Patent CN107513176A discloses a kind of preparation method of hydrophobic polymer film, is drawn using tape casting or orientation
It the moulding process such as stretches and prepares thin polymer film, utilize supercritical CO2Foaming make polymeric film surface formed nanometer mastoid process and
The special construction of groove realizes super hydrophobic functional.Patent CN106835043A discloses the preparation of transparent hydrophobic film, uses
Rf magnetron sputtering is combined with annealing, obtains super hydrophobic functional film in conjunction with low temperature fluorate processing, the painting thickness of acquisition
Degree is greater than 167 degree in 60-150nm, with the static contact angle of water.However, these method equipment or preparation cost are expensive, operated
Journey is more complicated, and experiment condition is harsh, it is difficult to large-scale production and coating.
On the other hand, construction " organic/inorganic " nanocomposite dispersions system is to obtain a kind of super-hydrophobic effective way,
It is middle using more inorganic constituents be SiO2。SiO2There are two types of the preparation main methods of based super hydrophobic coating：A kind of method be by
SiO2Particle and solvent are mixed, ultrasonic disperse, adjust the technical process such as pH value and obtain SiO2Then dispersion will
SiO2It deposits to substrate surface and obtains SiO2The substrate of the coating is finally immersed in low-surface-energy dressing agent and is modified by coating,
It lifts and dries and obtain super-hydrophobic SiO2Coating.However, this method is usually due to organic point of the low-surface-energy of surface modification
Son is easy loss or destroys and fail, and is unfavorable for large area film forming.Another method is by SiO2Equal mixed powders are added to molten
In agent, and low-surface-energy organic matter is added and is modified and obtains dispersion, super-hydrophobic coat is obtained using coating.So
And the dispersion of this method preparation is often dispersed poor, is easy sedimentation, therefore manufactured coating uniformity and reproducibility by
To influence.
Summary of the invention
For above-mentioned defect existing in the prior art, the purpose of the present invention is to provide a kind of super-hydrophobic SiO2Nanometer function
The simple preparation method and application of energy liquid, the SiO of preparation2Nano functional liquid favorable dispersibility, simple process, reaction is controllable, at
This is cheap, and can be mass-produced and coating.
To achieve the above objectives, the technical solution adopted by the present invention is that：A kind of super-hydrophobic SiO2The preparation of nano functional liquid
Method includes the following steps：
Basic catalyst and esters of silicon acis are added in alcohols solvent, agitated, reaction, ageing prepare SiO2Nano particle
Dispersion liquid；
Low-surface-energy is added carries out reaction modification without fluorine organic, prepares super-hydrophobic SiO2Nano functional liquid.
Based on the above technical solution, the alcohols solvent be one or more of ethyl alcohol, methanol, isopropanol,
Preferred alcohol.
Based on the above technical solution, the basic catalyst be NaOH aqueous solution, KOH aqueous solution, ammonium hydroxide and
One of ethylenediamine is several, wherein：NaOH aqueous solution or KOH concentration of aqueous solution are between 0.2-5 mol/L, NaOH
Or the molar ratio of KOH and alcohols solvent is 1:1000 to 1:Between 200；The volume ratio of ammonium hydroxide or ethylenediamine and alcohols solvent is 1:
5 to 1:Between 20.
Based on the above technical solution, the esters of silicon acis is positive one of tetrabutyl silicate, tetraethyl orthosilicate
Or two kinds.
Based on the above technical solution, the digestion time is 1-7 days, preferably 4 days.
Based on the above technical solution, the preparation SiO2The reaction temperature of nano particle is room temperature.
Based on the above technical solution, the low-surface-energy without fluorine organic include methyltriethoxysilane,
Methyltrimethoxysilane, dimethyl silicone polymer, propyl trimethoxy silicane, octyltri-ethoxysilane, two silicon of hexamethyl
Amine alkane, dodecyltrimethoxysilane, dodecyl triethoxysilane, hexadecyl trimethoxy silane and triethoxy
One of methyl-monosilane is several.
Based on the above technical solution, the volume ratio of the no fluorine organic and alcohols solvent is 1:40 to 1:4 it
Between.
The invention also discloses a kind of super-hydrophobic SiO2The application of nano functional liquid is prepared using the preparation method
Super-hydrophobic SiO2Nano functional liquid, prepares based superhydrophobic thin films.
Based on the above technical solution, by the super-hydrophobic SiO2Nano functional liquid is coated on glass, plastics, ceramics
Or metal surface, based superhydrophobic thin films are formed after dry.
Compared with the prior art, the advantages of the present invention are as follows：
(1) present invention uses a kind of easy-to-use wet-chemical approach, prepares the SiO with good dispersion first2It receives
Rice grain, and cross-linking reaction modification is carried out to nano particle to obtain ultra-hydrophobicity using low-surface-energy organic matter.Wherein
Dispersed SiO2Nano particle can be prepared by way of base catalysis, the controllability with size and concentration.The present invention
The shortcomings that sufficiently overcoming the above-mentioned super-hydrophobic dispersion preparation method and technique referred to and deficiency, what is be prepared is super-hydrophobic
SiO2Nano functional liquid favorable dispersibility generates for storage 1 year or more without precipitating.And preparation process is simple, reaction is controllable, cost
It is cheap, there is great social value and economic value in industrialization promotion is produced and applied.
(2) super-hydrophobic SiO provided by the invention2Nano functional liquid has very good dispersibility, places 1 at normal temperature
Year or more without obvious sediment generate, be conducive to product long term guarantee quality storage.
(3) super-hydrophobic SiO provided by the invention2Nano functional liquid can be coated on glass by the methods of spraying, brushing, dip-coating
All kinds of substrates such as glass, plastics, ceramics or metal, it is applied widely；The based superhydrophobic thin films surface of acquisition and the static contact angle of water
Up to 164.4 degree, roll angle shows extraordinary super hydrophobic functional down to 1.8 degree, therefore the super-hydrophobic product of gained is from clearly
The fields such as clean antifouling, anticorrosive mildewproof, anti-condensation, ice-covering-proof are widely used.
Detailed description of the invention
Fig. 1 is SiO obtained in the embodiment of the present invention 22Transmission electron microscope (TEM) photo of nano particle；
Fig. 2 is the static contact angle photo on based superhydrophobic thin films surface and water obtained in the embodiment of the present invention 2；
Fig. 3 is scanning electron microscope (SEM) photo on based superhydrophobic thin films surface obtained in the embodiment of the present invention 3；
Fig. 4 is the static contact angle photo on based superhydrophobic thin films surface and water obtained in the embodiment of the present invention 3；
Fig. 5 is the static contact angle photo on based superhydrophobic thin films surface and water obtained in the embodiment of the present invention 4.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and embodiments.
Embodiment 1：
The embodiment of the present invention provides a kind of super-hydrophobic SiO2The preparation method of nano functional liquid, includes the following steps：
S1, is added basic catalyst and esters of silicon acis in alcohols solvent, and agitated, reaction, ageing prepare SiO2Nanometer
The dispersion liquid of grain.
The alcohols solvent is one or more of ethyl alcohol, methanol, isopropanol, preferred alcohol.
The basic catalyst is one of NaOH aqueous solution, KOH aqueous solution, ammonium hydroxide and ethylenediamine or several,
Wherein：NaOH aqueous solution or KOH concentration of aqueous solution are between 0.2-5 mol/L, the molar ratio of NaOH or KOH and alcohols solvent
1:1000 to 1:Between 200；The volume ratio of ammonium hydroxide or ethylenediamine and alcohols solvent is 1:5 to 1:Between 20.
The esters of silicon acis is positive one or both of tetrabutyl silicate, tetraethyl orthosilicate.
The digestion time is 1-7 days, preferably 4 days.The preparation SiO2The reaction temperature of nano particle is room temperature.
S2, low-surface-energy is added carries out reaction modification without fluorine organic, prepares super-hydrophobic SiO2Nano functional liquid.
The no fluorine organic includes methyltriethoxysilane, methyltrimethoxysilane, dimethyl silicone polymer, third
Base trimethoxy silane, octyltri-ethoxysilane, hexamethyldisilazane, dodecyltrimethoxysilane, dodecyl
One of triethoxysilane, hexadecyl trimethoxy silane and triethoxy methyl silicane are several.The free-floride
The volume ratio of organic matter and alcohols solvent is 1:40 to 1:Between 4.
The embodiment of the invention also discloses a kind of super-hydrophobic SiO2The application of nano functional liquid, using super-hydrophobic SiO2Nanometer
The super-hydrophobic SiO of the preparation method preparation of particle functional liquid2Nano particle functional liquid, preparing has super-hydrophobic automatic cleaning function
Film.
By the super-hydrophobic SiO2Nano functional liquid is coated on all kinds of substrate surfaces such as glass, plastics, ceramics or metal, warp
Drying forms super hydrophobic functional film.
Embodiment 2：
The embodiment of the present invention provides a kind of super-hydrophobic SiO2The preparation method of nano functional liquid, includes the following steps：
(1)SiO2The preparation of nanoparticulate dispersion：The NaOH solution of 0.3ml is added in 30ml ethyl alcohol under room temperature
(concentration is 3 mol/Ls), is then added tetraethyl orthosilicate (TEOS) 8ml, after stirring 3h, is aged 4 days.
Shown in Figure 1, transmissioning electric mirror test result shows SiO manufactured in the present embodiment2Nano particle average-size is about
For 16nm, these little particles have the tendency that forming average diameter about 60-90nm aggregate, this forms two when helping to prepare film
Level structure helps to improve hydrophobic performance.
(2) in the SiO of step (1) preparation under room temperature condition stirring2Hexamethyl two is added in nanoparticulate dispersion
Up to super-hydrophobic SiO after silicon amine alkane 12ml, reaction 4h2Nano functional liquid.
The embodiment of the present invention also provides a kind of functional liquid in the application of the antifouling coated glass of self-cleaning, shown in Figure 2,
Use the super-hydrophobic SiO2The static contact angle of film and water that the coating of nano functional liquid obtains on a glass substrate is 164.4
Degree, roll angle are 1.8 degree.The coated glass shows excellent ultra-hydrophobicity, it is expected to it is antifouling to be applied to self-cleaning.
Embodiment 3：
The embodiment of the present invention provides a kind of super-hydrophobic SiO2The preparation method of nano functional liquid, includes the following steps：
(1)SiO2The preparation of nanoparticulate dispersion：3.5ml concentrated ammonia liquor is added in 50ml methanol under room temperature, so
After be added positive tetrabutyl silicate 7ml, after stirring 3h, be aged 1 day.
(2) in the SiO of step (1) preparation under room temperature condition stirring2Three second of methyl is added in nanoparticulate dispersion
Up to super-hydrophobic SiO after oxysilane 12ml, reaction 4h2Nano functional liquid.
As shown in Figure 3, using the super-hydrophobic SiO2The film surface that the coating of nano functional liquid obtains on a glass substrate has
Particle agglomeration, rough surface.As shown in Figure 4, using the super-hydrophobic SiO2Nano functional liquid is coated on metal substrate and obtains
Film and water static contact angle be 164.3 degree, roll angle be 2.1 degree.
Embodiment 4：
The embodiment of the present invention provides a kind of super-hydrophobic SiO2The preparation method of nano functional liquid, includes the following steps：
(1)SiO2The preparation of nanoparticulate dispersion：3.5ml ethylenediamine is added in 50ml isopropanol under room temperature,
Then tetraethyl orthosilicate (TEOS) 7ml is added, after stirring 3h, is aged 7 days.
(2) in the SiO of step (1) preparation under room temperature condition stirring2Triethoxy is added in nanoparticulate dispersion
Up to super-hydrophobic SiO after methyl-monosilane 12ml, reaction 4h2Nano functional liquid.
As shown in Figure 5, using the super-hydrophobic SiO2Nano functional liquid is coated with the film and water obtained on a ceramic substrate
Static contact angle is 154.3 degree, and roll angle is 4.2 degree.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
Under the premise of the principle of the invention, several improvements and modifications can also be made, these improvements and modifications are also considered as protection of the invention
Within the scope of.The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (10)
1. a kind of super-hydrophobic SiO2The preparation method of nano functional liquid, which is characterized in that include the following steps：
Basic catalyst and esters of silicon acis are added in alcohols solvent, agitated, reaction, ageing prepare SiO2The dispersion of nano particle
Liquid；
Low-surface-energy is added carries out reaction modification without fluorine organic, prepares super-hydrophobic SiO2Nano functional liquid.
2. a kind of super-hydrophobic SiO as described in claim 12The preparation method of nano functional liquid, it is characterised in that：The alcohols
Solvent is one or more of ethyl alcohol, methanol, isopropanol, preferred alcohol.
3. a kind of super-hydrophobic SiO as described in claim 12The preparation method of nano functional liquid, it is characterised in that：The alkali
Property catalyst be one of NaOH aqueous solution, KOH aqueous solution, ammonium hydroxide and ethylenediamine or several, wherein：NaOH aqueous solution or
KOH concentration of aqueous solution is between 0.2-5 mol/L, and the molar ratio of NaOH or KOH and alcohols solvent is 1:1000 to 1:200 it
Between；The volume ratio of ammonium hydroxide or ethylenediamine and alcohols solvent is 1:5 to 1:Between 20.
4. a kind of super-hydrophobic SiO as described in claim 12The preparation method of nano functional liquid, it is characterised in that：The silicic acid
Ester is positive one or both of tetrabutyl silicate, tetraethyl orthosilicate.
5. a kind of super-hydrophobic SiO as described in claim 12The preparation method of nano functional liquid, it is characterised in that：The ageing
Time is 1-7 days, preferably 4 days.
6. a kind of super-hydrophobic SiO as described in claim 12The preparation method of nano functional liquid, it is characterised in that：The preparation
SiO2The reaction temperature of nano particle is room temperature.
7. a kind of super-hydrophobic SiO as described in claim 12The preparation method of nano functional liquid, it is characterised in that：The low table
Face energy includes methyltriethoxysilane, methyltrimethoxysilane, dimethyl silicone polymer, propyl front three without fluorine organic
Oxysilane, octyltri-ethoxysilane, hexamethyldisilazane, dodecyltrimethoxysilane, three ethoxy of dodecyl
One of base silane, hexadecyl trimethoxy silane and triethoxy methyl silicane are several.
8. a kind of super-hydrophobic SiO as claimed in claim 72The preparation method of nano functional liquid, it is characterised in that：The free-floride
The volume ratio of organic matter and alcohols solvent is 1:40 to 1:Between 4.
9. a kind of super-hydrophobic SiO2The application of nano functional liquid, it is characterised in that：Using the institute of such as claim 1~8 any one
The super-hydrophobic SiO for the preparation method preparation stated2Nano functional liquid, prepares based superhydrophobic thin films.
10. a kind of super-hydrophobic SiO as claimed in claim 92The application of nano functional liquid, it is characterised in that：It will be described super-hydrophobic
SiO2Nano functional liquid is coated on glass, plastics, ceramics or metal surface, forms based superhydrophobic thin films after dry.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110004711A (en) * | 2019-04-25 | 2019-07-12 | 五邑大学 | The preparation method and bubble agitation device of super-hydrophobic dacron |
| CN110862756A (en) * | 2019-11-26 | 2020-03-06 | 福州大学 | Wear-resistant super-hydrophobic coating and preparation method thereof |
| CN112608678A (en) * | 2021-01-12 | 2021-04-06 | 黑龙江大学 | Preparation method and application of super-hydrophobic antifouling water-saving coating |
| CN114276704A (en) * | 2021-12-31 | 2022-04-05 | 武汉理工大学 | Super-amphiphobic coating and preparation method and application thereof |
| CN114736041A (en) * | 2022-06-10 | 2022-07-12 | 广东简一(集团)陶瓷有限公司 | Super-hydrophobic ceramic tile and preparation method thereof |
| CN114990548A (en) * | 2022-05-20 | 2022-09-02 | 大连海事大学 | Preparation method of anti-icing super-hydrophobic coating with lotus leaf effect |
| CN116005465A (en) * | 2023-03-03 | 2023-04-25 | 天津工业大学 | Method for preparing anti-puncture strong acid and alkali resistant aramid composite fabric |
| CN117165106A (en) * | 2023-08-18 | 2023-12-05 | 浙江浙能技术研究院有限公司 | Preparation method of wear-resistant flame-retardant self-cleaning anti-reflection coating for photovoltaic |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110004711A (en) * | 2019-04-25 | 2019-07-12 | 五邑大学 | The preparation method and bubble agitation device of super-hydrophobic dacron |
| CN110862756A (en) * | 2019-11-26 | 2020-03-06 | 福州大学 | Wear-resistant super-hydrophobic coating and preparation method thereof |
| CN112608678A (en) * | 2021-01-12 | 2021-04-06 | 黑龙江大学 | Preparation method and application of super-hydrophobic antifouling water-saving coating |
| CN114276704A (en) * | 2021-12-31 | 2022-04-05 | 武汉理工大学 | Super-amphiphobic coating and preparation method and application thereof |
| CN114990548A (en) * | 2022-05-20 | 2022-09-02 | 大连海事大学 | Preparation method of anti-icing super-hydrophobic coating with lotus leaf effect |
| CN114736041A (en) * | 2022-06-10 | 2022-07-12 | 广东简一(集团)陶瓷有限公司 | Super-hydrophobic ceramic tile and preparation method thereof |
| CN116005465A (en) * | 2023-03-03 | 2023-04-25 | 天津工业大学 | Method for preparing anti-puncture strong acid and alkali resistant aramid composite fabric |
| CN117165106A (en) * | 2023-08-18 | 2023-12-05 | 浙江浙能技术研究院有限公司 | Preparation method of wear-resistant flame-retardant self-cleaning anti-reflection coating for photovoltaic |
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