CN108752988A - A kind of preparation method of super-hydrophobic silicon colloidal sol and super-hydrophobic coat - Google Patents
A kind of preparation method of super-hydrophobic silicon colloidal sol and super-hydrophobic coat Download PDFInfo
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- CN108752988A CN108752988A CN201810576112.XA CN201810576112A CN108752988A CN 108752988 A CN108752988 A CN 108752988A CN 201810576112 A CN201810576112 A CN 201810576112A CN 108752988 A CN108752988 A CN 108752988A
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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
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/06—Coating with compositions not containing macromolecular substances
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
- D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/10—Repellency against liquids
- D06M2200/12—Hydrophobic properties
Abstract
The invention discloses the preparation methods of a kind of super-hydrophobic silicon colloidal sol and super-hydrophobic coat, first, esters of silicon acis, solvent and water are mixed, then basic catalyst is added drop-wise in above-mentioned mixed solution, adjust pH value 8~10, prepare pure silicon dioxide gel；Then by modifier R1Si(OR2)3It is added in above-mentioned pure silicon dioxide colloidal sol, by cocondensation, obtains super-hydrophobic silicon colloidal sol.Super-hydrophobic silicon colloidal sol is coated on by the methods of spraying, dip-coating, showering, dipping on common base material, super-hydrophobic coat is obtained after drying.The size of modified manometer silicon dioxide in the super-hydrophobic silicon colloidal sol prepared by the method for the invention is 100~150nm, spherical in shape.Raw material used in the method for the present invention is environmentally protective, at low cost, simple production process, does not need complicated production equipment, large-scale production easy to implement.
Description
Technical field
The present invention relates to super hydrophobic material fields, more particularly to the preparation of a kind of super-hydrophobic silicon colloidal sol and super-hydrophobic coat
Method.
Background technology
Wellability is a key property of the surface of solids.Wellability is played the part of in our daily life and industrial production
Drill important role such as：Dispersion, absorption etc., the wetness degree of the surface of solids can be judged by contact angle, according to contact
The surface of solids can be divided into hydrophily and hydrophobicity by the value at angle.Wherein when the value of surface of solids contact angle is more than 150 °, just
It can claim the surface that there is super-hydrophobicity.There is many super hydrophobic surfaces in nature, such as：Lotus leaf, rice leaf etc., these are super
Hydrophobic surface generally all meets the requirement of two aspects：There is high extra coarse degree on surface；Surface energy is relatively low.Super hydrophobic surface is anti-
Water, automatically cleaning, anti-freeze, anti-corrosion of metal, water-oil separating and antibiosis have broad application prospects.
More and more researchers by sight concentrate on how constructing super-drainage surface.In recent years, occur very much
Method prepares super hydrophobic surface, including：Electrochemical deposition method, chemical vapour deposition technique, phase separation method, LBL self-assembly method,
Template, chemical etching method and sol-gel method.
Electrochemical deposition method, chemical vapour deposition technique and the chemical etching method for having document report are deposited in actual production
In many problems, such as：Manufacturing process is complicated, production procedure is complicated, needs special production equipment, compares the pollution of environment
Seriously；Preparing super hydrophobic surface by template, there is also some problems, such as：Required template is expensive, production technology
It is more complicated.Therefore, the above method is difficult to realize mass produce, to limit super-hydrophobic coat answering in real life
With.
Sol-gel method is a kind of a kind of common method for being used for preparing super-hydrophobic coat, since sol-gel method makes
Cost of material is relatively cheap, and working condition is also very simple, does not need expensive production equipment and certain moduli plate,
So sight has been gathered in sol-gel method and has prepared super-hydrophobic coat by current more and more researchers.Existing document is all
It is to use the silicon fluoride of low-surface-energy as the modifying agent of nano silicon dioxide, but silicon fluoride is not only expensive, but also to people
Health there is harm, also pollute environment.
The document that super-hydrophobic silicon colloidal sol is prepared using not fluorine-containing silane coupling agent also has been reported that most of is all to use band
There is the silane coupling agent R of chain alkyl1’Si(OR2)3(R1' be backbone c atoms number be more than or equal to 12 alkyl) prepare it is super-hydrophobic
Ludox, and this method prepares and needs a large amount of nonpolar solvent, these solvents have prodigious pollution to environment；And pass through
Super-hydrophobic silicon colloidal sol prepared by long-chain fat base silane coupling agent, since the glass transition temperature of chain alkyl is relatively low, normal
Lower temperature is liquid so that the viscosity of this Ludox is stronger, is easy, by dust pickup, to influence it in self-cleaning coating instead
Using.
Invention content
Present invention aims at provide a kind of preparation process it is simple, environmentally protective, at low cost, easy to implement industrialized one
The preparation method of kind super-hydrophobic silicon colloidal sol and super-hydrophobic coat.
To achieve the goals above, the present invention uses following technical scheme：
A kind of preparation method of super-hydrophobic silicon colloidal sol, includes the following steps：
1) by esters of silicon acis Si (OR)4It is scattered in solvent, places it on blender and stir evenly, obtain mixing molten
Liquid；
2) water and basic catalyst under agitation, are added in above-mentioned mixed solution, then at 30 DEG C~80 DEG C
0.5~12h is reacted, pure silicon dioxide colloidal sol is generated；
3) modifier R is added in above-mentioned pure silicon dioxide sol gel1Si(OR2)3, pure silicon dioxide colloidal sol is carried out
Surface modification, 1~48h of cocondensation at 30 DEG C~80 DEG C, obtains super-hydrophobic silicon colloidal sol.
The esters of silicon acis Si (OR)4, solvent volume ratio be 1：10~1：40；Esters of silicon acis Si (OR)4, water volume ratio
It is 1：1~1：10, esters of silicon acis Si (OR)4, modifier R1Si(OR2)3Volume ratio be 2：1~2：3, the basic catalyst
Addition be so that system pH value between 8~10.
The esters of silicon acis Si (OR)4, structure isWherein R=-CH3、-CH2CH3、-
CH2CH2CH3、-CH(CH3)2、-CH2CH2CH2CH3One or more of mixture.
The modifier R1Si(OR2)3Structural formula beModifier R1Si(OR2)3It is by silane
The mixed liquor of coupling agent A and silane coupling agent B compositions；
In silane coupling A, R1=-CH3、-CH2CH3、-CH2CH2CH3、-CH(CH3)2、-C(CH3)3In one kind, R1For
Backbone c atoms number is less than 4 alkyl, R2=-CH3、-CH2CH3、-CH2CH2CH3、-CH(CH3)2、-CH2CH2CH2CH3In one
Kind；
In silane coupling agent B, R1=-CH=CH2Or-CH=CHCH3, R2=-CH3、-CH2CH3、
-CH2CH2CH3、-CH(CH3)2、-CH2CH2CH2CH3In one kind.
Further, the silane coupling A and silane coupling agent B are 1 according to volume ratio：5~5：2 mixing.
The solvent is the mixing of one or more of methanol, ethyl alcohol, isopropanol, butanol, diacetone alcohol or acetone
Object.
The basic catalyst is ammonium hydroxide, potassium hydroxide solution, sodium hydroxide solution, tetramethylammonium hydroxide or phosphorus
The mixture of one or more of sour hydrogen sodium solution.
The size of the nano silicon dioxide in pure silicon dioxide colloidal sol prepared by the present invention is 40~60nm, and shape
For spherical shape；The size of modified manometer silicon dioxide in prepared super-hydrophobic silicon colloidal sol is 100~150nm, and shape is
It is spherical.
The present invention also provides a kind of preparation methods of super-hydrophobic coat：Super-hydrophobic silicon colloidal sol prepared by the present invention is passed through
Dip-coating, showering, spraying or impregnating coating method commonly used in the art are coated on bases such as glass, plastics, metal, fabric or timber
On material, drying to super-hydrophobic coat.
The surface of the super-hydrophobic coat forms the mastoid process of micron level, and a large amount of sky for being used for capturing air
Gap, and the protrusion of Nano grade is distributed in mastoid process.The water contact angle of the super-hydrophobic coat is 150 °~170 °.
At present about by lower alkenyl modified Nano Ludox, the Ludox method with ultra-hydrophobicity is prepared also not
It appears in the newspapers, since the rigidity of lower alkenyl is greater than the saturated alkyl of equal length, is not only had by the Ludox of its modification good
Good hydrophobic performance, and lower alkenyl modified Nano Ludox is used, the modification that can obtain the active alkenyl of surface band is received
Rice Ludox, the super-hydrophobic silicon colloidal sol being prepared not only can be used alone, is also used as preparing coating raw material, by with
Other monomers are copolymerized to prepare super hydrophobic coating.
In view of this, the present invention prepares super-hydrophobic silicon colloidal sol using a kind of environmentally protective method.Pass through control first
Reaction condition is such as：Reactant ratio, catalyst type, reaction temperature, reaction time etc. prepare the uniform spherical shape of particle diameter distribution
Pure nano silicon dioxide sol particle, particle diameter distribution is in 40nm~60nm.Secondly, short-chain alkyl one type of silane coupling agent and band are used
There is the silane coupling agent of ethylene linkage as modifying agent, structure and the proportioning of two kinds of coupling agents determine prepared super-hydrophobic silicon colloidal sol
The grain size of performance, prepared super-hydrophobic silicon colloidal sol is 100~150nm, and is spherical structure.
The present invention has the following advantages：1, raw material used in this method is environmentally protective, and cost is relatively low, production technology letter
It is single, do not need very complicated production equipment, large-scale production easy to implement.2, super-hydrophobic silicon colloidal sol prepared by this method, changes
The nano silicon dioxide of property is spherical in shape, and particle diameter distribution is between 100nm~150nm.3, super-hydrophobic silicon colloidal sol prepared by this method,
It since its silica surface contains polymerizable double bond, can be added in coating, prepare super hydrophobic coating.
Description of the drawings
Fig. 1 is the contact angle of the water and polycarbonate surface coating of contact angle tester test.
Fig. 2 is the shape on non-dust cloth surface of the water after dip-coating.
Fig. 3 is the contact angle of the water and iron block face coat of contact angle tester test.
Fig. 4 is shape of the water on glass coating surface.
Fig. 5 is the surface topography of super-hydrophobic silica coating.
Specific implementation mode
The present invention is specifically addressed with reference to specific embodiment.Embodiment is not offered as that present invention is limited only to this models
It encloses.
Embodiment 1
At room temperature, the ethyl orthosilicate of 1ml is added in the ethyl alcohol of 40ml, then adds the water of 1ml, quickly stirs
It mixes, solution is made to be uniformly mixed；Then the ammonium hydroxide of 25wt% is added dropwise, the PH of regulation system is 8, at 35 DEG C, reacts 5h, obtains pure
Silicon dioxide gel.
The vinyl triethoxyl silicon of the methyltrimethoxysilane and 0.4ml of 1ml is added in pure silicon dioxide colloidal sol
Alkane quickly stirs, reacts 48h at 35 DEG C, obtain super-hydrophobic silicon colloidal sol.
Above-mentioned super-hydrophobic silicon colloidal sol is sprayed on polycarbonate surface, after drying, has obtained super-hydrophobic coat, the coating pair
The contact angle of water is 169 °.
Fig. 1 is the contact angle of the water and polycarbonate surface coating of contact angle tester test.
Embodiment 2
At room temperature, the methyl orthosilicate of 4ml is mixed with the aqueous isopropanol of 40ml, is then added into mixed liquor
10ml water is vigorously stirred to mixture and is uniformly mixed, then 1% sodium hydroxide solution is added drop-wise in above-mentioned system, adjusts
PH is 10, and 12h is reacted at 30 DEG C to get to pure silicon dioxide colloidal sol.
The vinyltriethoxysilane of the methyltriethoxysilane and 4ml of 2ml is added in pure silicon dioxide colloidal sol,
It is reacted at 40 DEG C for 24 hours, obtains super-hydrophobic silicon colloidal sol.
A certain amount of ethyl alcohol is added in above-mentioned super-hydrophobic silicon colloidal sol, makes its solid content 10%.With one piece of scissors clip
The non-dust cloth of 5cm × 5cm is immersed in 10min in above-mentioned super-hydrophobic silicon sol solution, up to waterproof non-dust cloth after drying.
The waterproof non-dust cloth is 152 ° to the contact angle of water.
Fig. 2 is the shape on non-dust cloth surface of the water after dip-coating.
Embodiment 3
At room temperature, the isopropanol of 20ml is uniformly mixed with the butanol of 20ml, then by the ethyl orthosilicate of 1.5ml,
The water of 9ml is added to above-mentioned in the mixed solvent, stirs evenly, and the ammonium hydroxide of 25wt% is then added dropwise while stirring, by system
PH value is adjusted to 8.5, after being added dropwise, reacts 0.5h at 80 DEG C, obtains the silicon dioxide gel of dual grain size.
The vinyl front three of the n-propyl triethoxysilane and 1.5ml of 1.5ml is added in above-mentioned silicon dioxide gel
Oxysilane reacts 5h at 50 DEG C, obtains super-hydrophobic silicon colloidal sol.
The iron block for taking one piece of 5cm × 5cm is polished with the sand paper of 100 mesh, until surface polishes smooth, is then placed on acetone
In solution, 30min is cleaned in supersonic wave cleaning machine, after with deionized water elution iron block surface, by the iron filings and solvent on its surface
It rinses well, puts and be dried for standby in an oven.
By above-mentioned super-hydrophobic silicon colloidal sol showering on iron block, first dries in an oven, be then again heated to 280 DEG C of heating
2h is to get to super-hydrophobic coat.It is 165 ° to apply the contact angle that cated one faces water.
Fig. 3 is the contact angle of the water and iron block face coat of contact angle tester test.
Embodiment 4
At room temperature, by the diacetone alcohol of 10ml, the ethyl alcohol of 20ml and the butanol mixing of 10ml, then by 2.5ml's
Positive silicic acid propyl ester and the deionized water of 24ml are added in above-mentioned mixed solution, are then added dropwise while stirring a concentration of
The pH value of system is adjusted to 9.5, after base catalyst is added dropwise, places it in 70 DEG C by the potassium hydroxide solution of 0.005mol/L
Lower reaction 4h, obtains pure silicon sol solution.
The vinyl silane triisopropoxide of 1.5ml ethyl triethoxysilanes and 2ml is added in above-mentioned system, 75
10h is reacted at DEG C to get to the super-hydrophobic silicon colloidal sol of ethyl and vinyl modified.
Glass slide is placed in Piranha solution and impregnates 1h, after it is with acetone that its surface washing is clean, then spend again from
Sub- water rinses surface, spare after drying.
The glass slide handled well is placed on after being impregnated for 24 hours in above-mentioned super-hydrophobic silicon colloidal sol, glass slide is placed at 80 DEG C and is dried
1h, after be warming up to 120 DEG C and dry 5h to get to super-hydrophobic coat.It is 164 to the contact angle of water to have the glass slide of super-hydrophobic coat
℃。
Fig. 4 is shape of the water on glass coating surface.
Comparative example 1
The deionized water of the ethyl orthosilicate and 1ml of 1ml is added in the ethanol solution of 40ml, after then stirring evenly,
The ammonium hydroxide of 25wt% is added dropwise while stirring, the PH to 8.0 of regulation system reacts 5h to get to pure silicon dioxide silicon at 35 DEG C
Colloidal sol.
Above-mentioned pure silicon dioxide colloidal sol is sprayed on polycarbonate substrate, silica dioxide coating is obtained after drying, it should
Coating is 30 ° to the contact angle of water.
As it can be seen that the modifier R not using the present invention of comparative example 11Si(OR2)3Surface is carried out to pure silicon dioxide colloidal sol to repair
Decorations, unmodified pure silicon dioxide colloidal sol are painted on polycarbonate substrate, obtained coating is small to the contact angle of water, table
It is now hydrophily.
Comparative example 2
At room temperature, the ethyl orthosilicate of 1ml is added in the ethyl alcohol of 40ml, then adds the water of 1ml, quickly stirs
It mixes, solution is made to be uniformly mixed；Then the ammonium hydroxide of 25wt% is added dropwise, the PH of regulation system is 8.It places it at 35 DEG C, reacts 5h,
Obtain pure silicon dioxide colloidal sol.
The methyltrimethoxysilane of 1ml is added in pure silicon dioxide colloidal sol, quickly stirs, reacts 48h at 35 DEG C,
Obtain modified silicasol.
By above-mentioned modified silicasol coating spraying on polycarbonate substrate, improved silica painting is obtained after drying
Layer, the coating are 101 ° to the contact angle of water.
Compared with Example 1, comparative example 2 uses merely methyltrimethoxysilane (i.e. short-chain alkyl one type of silane coupling agent)
Pure silicon dioxide colloidal sol is modified, the coating contact angle of preparation is only 101 °, and the modifying agent that embodiment 1 uses is methyl
Trimethoxy silane and vinyltriethoxysilane (use short-chain alkyl one type of silane coupling agent even with the silane with ethylene linkage
Join agent as modifying agent), coating prepared by modified silicon dioxide gel is 169 ° to the contact angle of water, is had super-hydrophobic
Property.
Comparative example 3
At room temperature, the ethyl orthosilicate of 1ml is added in the ethyl alcohol of 40ml, then adds the water of 1ml, quickly stirs
It mixes, solution is made to be uniformly mixed；Then the ammonium hydroxide of 25wt% is added dropwise, the PH of regulation system is 8, at 35 DEG C, reacts 5h, obtains pure
Silicon dioxide gel.
The vinyltriethoxysilane of 0.4ml is added in pure silicon dioxide colloidal sol, quickly stirs, is reacted at 35 DEG C
48h obtains modified silicasol.
By above-mentioned modified silicasol coating spraying on polycarbonate substrate, improved silica painting is obtained after drying
Layer, the coating are 94 ° to the contact angle of water.
Similar, comparative example 3 is merely using vinyltriethoxysilane (i.e. the silane coupling agent with ethylene linkage) to pure
Silicon dioxide gel is modified, and the coating hydrophobicity being prepared is unsatisfactory.
To sum up, the present invention provides a kind of technological process is simple, production cost it is low prepare super-hydrophobic silicon colloidal sol and super thin
The modes such as dip-coating, showering, spraying, dip-coating may be used in the method for water coating, the super-hydrophobic coat, and super-hydrophobic silicon colloidal sol is uniform
Be coated on the base material of glass, plastics, metal, fabric, timber, ultra-hydrophobicity is excellent, to the contact angle of water 150 ° with
On.
Embodiment described above be only used for further the present invention will be described, do not illustrate protection scope of the present invention
Only limit above-described embodiment, it is noted that without departing from the inventive concept of the premise, the improvement made belongs to this hair
Bright protection domain.
Claims (10)
1. a kind of preparation method of super-hydrophobic silicon colloidal sol, it is characterised in that：It includes the following steps：
1) by esters of silicon acis Si (OR)4It is scattered in solvent, stirs evenly, obtain mixed solution；
2) water and basic catalyst under agitation, are added in above-mentioned mixed solution, is then reacted at 30 DEG C~80 DEG C
0.5~12h generates pure silicon dioxide colloidal sol；
3) modifier R is added in above-mentioned pure silicon dioxide colloidal sol1Si(OR2)3, then at 30 DEG C~80 DEG C cocondensation 1~
48h obtains super-hydrophobic silicon colloidal sol.
2. a kind of preparation method of super-hydrophobic silicon colloidal sol according to claim 1, it is characterised in that：The esters of silicon acis Si
(OR)4, solvent volume ratio be 1：10~1：40；Esters of silicon acis Si (OR)4, water volume ratio be 1：1~1：10, esters of silicon acis Si
(OR)4, modifier R1Si(OR2)3Volume ratio be 2：1~2：3, the addition of the basic catalyst is so that system
PH value is between 8~10.
3. a kind of preparation method of super-hydrophobic silicon colloidal sol according to claim 1, it is characterised in that：The esters of silicon acis Si
(OR)4, structure isWherein R=-CH3、-CH2CH3、
-CH2CH2CH3、-CH(CH3)2、-CH2CH2CH2CH3One or more of mixture.
4. a kind of preparation method of super-hydrophobic silicon colloidal sol according to claim 1, it is characterised in that：The modifying agent
R1Si(OR2)3Structural formula beModifier R1Si(OR2)3It is by silane coupling A and silane coupling agent B
The mixed liquor of composition；
In silane coupling A, R1=-CH3、-CH2CH3、-CH2CH2CH3、-CH(CH3)2、-C(CH3)3In one kind, R1For main chain
Carbon atom number is less than 4 alkyl, R2=-CH3、-CH2CH3、-CH2CH2CH3、-CH(CH3)2、-CH2CH2CH2CH3In one kind；
In silane coupling agent B, R1=-CH=CH2Or-CH=CHCH3, R2=-CH3、-CH2CH3、-CH2CH2CH3、-CH
(CH3)2、-CH2CH2CH2CH3In one kind.
5. a kind of preparation method of super-hydrophobic silicon colloidal sol according to claim 4, it is characterised in that：The silane coupling agent
A and silane coupling agent B is 1 according to volume ratio：5~5：2 mixing.
6. a kind of preparation method of super-hydrophobic silicon colloidal sol according to claim 1, it is characterised in that：The solvent is first
One or more of alcohol, ethyl alcohol, isopropanol, butanol, diacetone alcohol or acetone mixture.
7. a kind of preparation method of super-hydrophobic silicon colloidal sol according to claim 1, it is characterised in that：The base catalysis
Agent is ammonium hydroxide, potassium hydroxide solution, sodium hydroxide solution, tetramethylammonium hydroxide or one kind or several in dibastic sodium phosphate solution
The mixture of kind.
8. a kind of preparation method of super-hydrophobic silicon colloidal sol according to claim 1, it is characterised in that：Prepared pure dioxy
The size of nano silicon dioxide in SiClx colloidal sol is 40~60nm, and shape is spherical shape；
The size of modified manometer silicon dioxide in prepared super-hydrophobic silicon colloidal sol is 100~150nm, and shape is ball
Shape.
9. the method for preparing super-hydrophobic coat using the super-hydrophobic silicon colloidal sol that claim 1-8 either method prepares, feature exist
In：By super-hydrophobic silicon sol coating on base material, drying to super-hydrophobic coat.
10. the method according to claim 9 for preparing super-hydrophobic coat, it is characterised in that：The painting method is leaching
Painting, showering, spraying or dipping, the base material are glass, plastics, metal, fabric or timber.
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| CN116589878A (en) * | 2023-07-19 | 2023-08-15 | 北京碧海云智新材料技术有限公司 | Long-acting self-cleaning graphene ceramic water paint and preparation method and application thereof |
| CN116589878B (en) * | 2023-07-19 | 2023-10-24 | 北京碧海云智新材料技术有限公司 | Long-acting self-cleaning graphene ceramic water paint and preparation method and application thereof |
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