CN108610786A - A kind of super-hydrophobic coat and preparation method thereof based on three-dimensional grapheme - Google Patents
A kind of super-hydrophobic coat and preparation method thereof based on three-dimensional grapheme Download PDFInfo
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- 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
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09D127/18—Homopolymers or copolymers of tetrafluoroethene
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- 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
- C03C17/008—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character comprising a mixture of materials covered by two or more of the groups C03C17/02, C03C17/06, C03C17/22 and C03C17/28
- C03C17/009—Mixtures of organic and inorganic materials, e.g. ormosils and ormocers
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
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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
- C09D129/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Coating compositions based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Coating compositions based on derivatives of such polymers
- C09D129/02—Homopolymers or copolymers of unsaturated alcohols
- C09D129/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- 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
- C03C2217/40—Coatings comprising at least one inhomogeneous layer
- C03C2217/43—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase
- C03C2217/44—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase characterized by the composition of the continuous phase
- C03C2217/445—Organic continuous phases
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- 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
- C03C2217/40—Coatings comprising at least one inhomogeneous layer
- C03C2217/43—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase
- C03C2217/46—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase characterized by the dispersed phase
- C03C2217/47—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase characterized by the dispersed phase consisting of a specific material
- C03C2217/475—Inorganic materials
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- 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
- C03C2218/30—Aspects of methods for coating glass not covered above
- C03C2218/32—After-treatment
Abstract
The present invention relates to a kind of super-hydrophobic coat and preparation method thereof based on three-dimensional grapheme, the method includes：Uniform three-dimensional grapheme dispersion liquid is obtained after three-dimensional grapheme powder and binder are sufficiently mixed, and three-dimensional graphite ene coatings are obtained coated in matrix surface；Gained three-dimensional graphite ene coatings are placed in the organic solvent containing fluoro alkyl-silane or/and long-chain alkanamine and keep the temperature a period of time at 80~120 DEG C to carry out hydrophobic treatment to obtain the super-hydrophobic coat, or gained three-dimensional graphite ene coatings are placed in the closed container containing fluoro alkyl-silane or/and long-chain alkanamine and keep the temperature a period of time at 120~200 DEG C to carry out hydrophobic treatment, to obtain the super-hydrophobic coat.The present invention is easy to regulate and control using the controllable feature of graphene oxide grain size, lamellar spacing, group, the pattern of three-dimensional grapheme super-hydrophobic coat.
Description
Technical field
The present invention relates to the preparation field of super-hydrophobic coat, it is related specifically to prepare super-hydrophobic coat using three-dimensional grapheme
Method.
Background technology
Super hydrophobic surface is a kind of surface with special wetting phenomena.This special wetting phenomena shows as angle of wetting
More than 150 °, water roll angle is less than 10 °, and water droplet can not be sprawled and rolling spherical in shape in material surface at this time, can take away surface
Pollutant to reach self-cleaning effect.Has the features such as material of this property is because of its waterproof antipollution, in the industrial people
All there is unique application with field.Studies have shown that there are two primary conditions for super hydrophobic surface：Have the coarse of special micro and nano
Structure, surface have compared with low-surface-energy.It is the common orderly micron column of coarse structure of super hydrophobic surface, porous structure, nano wire, micro-
The modes such as nano-particle cluster.But the pattern of micro nano structure is often difficult to control, this also be super hydrophobic surface preparation and
The difficulty that performance control strip comes.
The two-dimensional material that graphene is made of one layer of carbon atom, special structure embody unique physical chemistry
Matter.Graphene oxide is the redundant organism for the modification that oxygen-containing group (- OH ,-O- ,-COOH) has been carried out to graphene surface.Aoxidize stone
Black alkene not only has the feature of two-dimensional material, while its rich oxygen-containing group also makes it have higher chemism.Oxidation
The active oxygen-containing group of graphene surface can also become the starting point further modified to prepare the three-dimensional of different structure and pattern
Graphene.The chemism of graphene oxide, lead to prepared three-dimensional grapheme often due to preparation method and mode and
It with different micro-nano coarse structures, and is convenient for wetability using three-dimensional grapheme active group and is modified, so as to make
It is standby go out different super hydrophilic or super-hydrophobic special wet materials.
Invention content
In view of the above-mentioned problems, the purpose of the present invention is to provide a kind of super-hydrophobic coats based on high-strength three-dimensional graphene
Preparation method.
On the one hand, the present invention provides a kind of preparation methods of the super-hydrophobic coat based on three-dimensional grapheme, including：
Uniform three-dimensional grapheme dispersion liquid is obtained after three-dimensional grapheme powder and binder are sufficiently mixed, and is coated in matrix table
Face obtains three-dimensional graphite ene coatings；
Gained three-dimensional graphite ene coatings are placed in the organic solvent containing fluoro alkyl-silane or/and long-chain alkanamine at 80~120 DEG C
Lower heat preservation a period of time will obtain the super-hydrophobic coat to carry out hydrophobic treatment, or gained three-dimensional graphite ene coatings are placed in
It is kept the temperature for a period of time at 120~200 DEG C to carry out hydrophobic treatment in closed container containing fluoro alkyl-silane or/and long-chain alkanamine,
To obtain the super-hydrophobic coat.
Three-dimensional graphite ene coatings are prepared after binder is added using three-dimensional grapheme powder as raw material in the present invention.Then
Using the surfactants such as fluoro alkyl-silane FAS or long-chain alkanamine to three-dimensional graphite ene coatings hydrophobic treatment.Wherein, the fluothane
Base silane FAS or/and long-chain alkanamine are surface energy modification substance, and graphene can be further decreased in hydrophobic treatment process
Surface energy, finally so that the three-dimensional graphite ene coatings have super-hydrophobicity.Specifically, it is exactly fluoro alkyl-silane or/and length
Siloxane group and amido on chain alkanamine can generate covalently key connection with the active oxygen-containing group on three-dimensional grapheme surface, dredge
The fluoroalkyl of water can effectively improve three-dimensional grapheme hydrophobicity with chain alkyl.
Preferably, diamines substance is added in graphene oxide dispersion (such as graphene oxide water solution), 25
(such as water-bath) is kept the temperature at~90 DEG C after 2~12 hours, cleaned and freeze-drying obtains the three-dimensional grapheme powder.
Also, preferably, the diamines substance is at least one of ethylenediamine, p-phenylenediamine and o-phenylenediamine.
Preferably, the binder is water-soluble binder, in preferably Nafion, polyvinyl alcohol, polyacrylic acid extremely
Few one kind, more preferably Nafion can get the coating well dispersed, pattern is uniform.
Preferably, the mass ratio of the three-dimensional grapheme powder and binder is (0.5~10)：1, preferably (1~2)：
1。
Preferably, three-dimensional grapheme dispersion liquid also contains solvent, the solvent is preferably water.
Preferably, the long-chain alkanamine is the long-chain alkanamine containing 8~20 C atoms, such as amine octane, dodecyl amine, ten
At least one of eight alkanamines, the fluoro alkyl-silane are 17 fluorine ruthenium triethoxysilanes, ten trifluoro octyl trimethoxies
At least one of the silane of the chain fluoroalkyl containing 8-20 C atom such as silane.
Preferably, in hydrophobic treatment, soaking time is 0.5~8 hour, preferably 0.5~4 hour.
On the other hand, the present invention also provides a kind of super-hydrophobic coats, and the hydrophobic angle of the super-hydrophobic coat is more than 140 °,
Preferably greater than 150 °.
The invention has the characteristics that and advantage：
1, three-dimensional graphite ene coatings are prepared into using graphene oxide, have the advantages that economical and efficient；
2, using the controllable feature of graphene oxide grain size, lamellar spacing, group, the pattern of three-dimensional grapheme super-hydrophobic coat is easy
In regulation and control.
Description of the drawings
Fig. 1 is the scanning electron microscope diagram for the three-dimensional graphite ene coatings that the embodiment of the present invention 1 obtains；
Fig. 2 is the high resolution scanning electron microscope figure for the three-dimensional graphite ene coatings that the embodiment of the present invention 1 obtains；
Fig. 3 is the scanning electron microscope diagram for the three-dimensional graphite ene coatings that the embodiment of the present invention 2 obtains；
Fig. 4 is the high resolution scanning electron microscope figure for the three-dimensional graphite ene coatings that the embodiment of the present invention 2 obtains；
Fig. 5 is the water contact angle measurement figure for the three-dimensional graphite ene coatings that the embodiment of the present invention 1 obtains；
Fig. 6 is the water contact angle measurement figure for the three-dimensional graphite ene coatings that the embodiment of the present invention 2 obtains.
Specific implementation mode
It is further illustrated the present invention below by way of following embodiments, it should be appreciated that following embodiments are merely to illustrate this
Invention, is not intended to limit the present invention.
The present invention is compounded to form the three-dimensional grapheme material of high intensity by graphene oxide and diamines substance, and adds
Binder forms the coating with three-dimensional structure in substrate surface.Then surface energy modification substance is used to carry out table to the coating
Face is modified, and makes it have super-hydrophobicity.
Illustrate to following exemplary the preparation method of the super-hydrophobic coat provided by the invention based on three-dimensional grapheme.
Prepare graphene oxide.Few layer of graphene oxide of monodisperse, size tunable is prepared using wet chemistry method.With squama
Piece graphite is raw material, and graphene oxide is prepared using Hummers methods are improved.The grain size of graphene oxide can be 20nm~10 μm,
The number of plies can be 1~2 layer.
It is prepared by three-dimensional grapheme powder.Certain density diamines substance is added in graphene oxide dispersion, keeps the temperature
After clean and be freeze-dried to obtain three-dimensional graphene oxide powder.Used diamines substance includes but are not limited to second two
One or more of diamine organic matters such as amine, p-phenylenediamine, o-phenylenediamine.Holding temperature is 25~90 DEG C, the reaction time
It is 2~12 hours.
As a detailed example, by graphene oxide dispersion centrifuge obtained with 10000 revs/min of speed
After centrifuging 1h, it is that monodisperse lacks layer graphene oxide to go upper layer clear solution, and deionized water is used in combination to be diluted to 1mg/ml.It takes
50mg p-phenylenediamine is added in the 1mg/ml graphene oxide dispersions of 100ml, and ultrasonic disperse is after 30 minutes in 90 DEG C of water baths
Middle magnetic control stirs 6h.It, will by gained reaction product successively after ethyl alcohol and deionized water are cleaned multiple times and are colourless to supernatant liquor
Product is freeze-dried to obtain three-dimensional grapheme powder.
The preparation of three-dimensional grapheme dispersion liquid.By the powder of three-dimensional grapheme and a certain amount of binder, solvent (for example,
Water) after mixing ultrasonic certain time obtain uniform three-dimensional grapheme dispersion liquid.Used binder includes but are not limited to
The water-soluble binders such as Nafion, polyvinyl alcohol.The mass ratio of the three-dimensional grapheme powder and binder can be (0.5~
10)：1, preferably (1~2)：1.
The preparation of three-dimensional graphite ene coatings.The coating of three-dimensional grapheme is obtained using the methods of spraying or dipping.Coating
Matrix includes but not limited to glass, aluminium oxide, silicon oxide ceramics, the metals such as stainless steel, copper and ceramics.Hydrophobic place is carried out to coating
Super-hydrophobic three-dimensional graphite ene coatings are obtained after reason.
The hydrophobic treatment of coating.Since the present invention is selected containing fluoro alkyl-silane or/and long-chain alkanamine as surface energy modification
Substance, described containing fluoro alkyl-silane or/and long-chain alkanamine is solid material or fluent material, therefore can be by gained three-dimensional grapheme
Painting is placed in the organic solution of fluoro alkyl-silane FAS or/and long-chain alkanamine (such as the ethyl alcohol containing FAS or/and long-chain alkanamine
Solution) in, hydrophobic treatment is impregnated at 80~120 DEG C 0.5~8 hour (preferably 0.5-4 hours), obtain the super-hydrophobic painting
Layer.Also directly gained three-dimensional graphite ene coatings can be placed in fluoro alkyl-silane or/and long-chain alkanamine and is kept the temperature at 120~200 DEG C
A period of time to carry out hydrophobic treatment, obtains the super-hydrophobic coat.Specifically, by coating merging containing fluoro alkyl-silane or/
In the closed container of long-chain alkanamine, it is heated to 120-200 DEG C and keeps the temperature 0.5-8 hours (preferably 0.5-4 hours).The table used
Face energy modified material includes but are not limited to the surfactants such as fluoro alkyl-silane, dodecyl amine, octadecylamine.The fluoroalkyl
Silane can be the long-chain fluorine containing 8-20 C atom such as 17 fluorine ruthenium triethoxysilanes, ten trifluoro octyl trimethoxy silanes
At least one of silane in alkyl.The concentration of solution containing FAS or/and long-chain alkanamine can be 0.1~2mg/ml, and solvent can
For alcohol, toluene, tetrahydrofuran etc..In one example, the three-dimensional graphite ene coatings are placed in the length of a concentration of 1mg/ml
In the alcoholic solution of chain alkanamine, then carry out hydrophobic treatment.
The present invention tests the hydrophobic angle of gained super-hydrophobic coat using contact angle tester.
The preparation method of super-hydrophobic coat provided by the invention based on high-strength three-dimensional graphene, further carries coating
Hydrophobic performance, gives full play to the excellent properties of graphene, extends the application of two-dimensional graphene material, have it is easy to operate, be easy to
The characteristics of structure regulating.
Embodiment is enumerated further below so that the present invention will be described in detail.It will similarly be understood that following embodiment is served only for this
Invention is further described, and should not be understood as limiting the scope of the invention, those skilled in the art is according to this hair
Some nonessential modifications and adaptations that bright the above is made all belong to the scope of protection of the present invention.Following examples are specific
Technological parameter etc. is also only an example in OK range, i.e. those skilled in the art can be done properly by the explanation of this paper
In the range of select, and do not really want to be defined in hereafter exemplary concrete numerical value.
Embodiment 1
Using crystalline flake graphite as raw material, graphene oxide is prepared using Hummers methods are improved.By graphene oxide dispersion obtained
After centrifuging 1h with centrifuge with 10000 revs/min of speed, it is that monodisperse lacks layer graphene oxide to go upper layer clear solution, is used in combination
Deionized water is diluted to 1mg/ml.The 1mg/ml graphene oxide dispersions of 100ml are taken, 50mg p-phenylenediamine, ultrasound point is added
Magnetic control stirs 6h in 90 DEG C of water baths after dissipating 30 minutes.Gained reaction product is successively repeatedly clear with deionized water through ethyl alcohol
Be washed till supernatant liquor be it is colourless after, product is freeze-dried to obtain three-dimensional grapheme powder.In the Nafion membrane solution of 1ml 2%
Three-dimensional grapheme powder obtained by 20mg is added, ultrasonic disperse is spin-coated on after 30 minutes on glass matrix, and 50 DEG C of dry 1h obtain three
Tie up graphite ene coatings.It is placed on applying in the water heating kettle of addition 17 fluorine ruthenium triethoxysilanes of 50ul, reacts 2h at 120 DEG C
Obtain super-hydrophobic three-dimensional graphite ene coatings.Test shows that this three-dimensional graphite ene coatings are firmly combined with, and hydrophobic angle is more than
150 °, as shown in Figure 5.Fig. 1 is the scanning electron microscope diagram for the three-dimensional graphite ene coatings that the embodiment of the present invention 1 obtains, from Fig. 1
In known to the hydrophobic coating prepared it is integrally uniform smooth.The three-dimensional graphite ene coatings that the embodiment of the present invention 1 of Fig. 2 obtains simultaneously
High resolution scanning electron microscope figure in known to this even curface simultaneously there is the other coarse structure of micro/nano level, it is this
Structure can effectively improve the specific surface area of material surface, show super-hydrophobicity conducive to surface.
Embodiment 2
Using micro crystal graphite as raw material, graphene oxide is prepared using Hummers methods are improved.By graphene oxide dispersion obtained
After centrifuging 1h with centrifuge with 10000 revs/min of speed, it is that monodisperse lacks layer graphene oxide to go upper layer clear solution, is used in combination
Deionized water is diluted to 1mg/ml.The 1mg/ml graphene oxide dispersions of 100ml are taken, 0.5ml ethylenediamines, ultrasonic disperse is added
Magnetic control stirs 6h in 90 DEG C of water baths after 30 minutes.It, will by gained reaction product successively after deionized water is cleaned multiple times
Product is freeze-dried to obtain three-dimensional grapheme powder.Three-dimensional grapheme obtained by 20mg is added in the poly-vinyl alcohol solution of 1ml 1%
Powder, ultrasonic disperse are spin-coated on after 30 minutes on glass matrix, and 50 DEG C of dry 1h obtain three-dimensional graphite ene coatings.Painting is placed on
It is added in the octadecylamine alcoholic solution of 1mg/ml, taking-up is dried with alcohol rinse after reaction 1h at 80 DEG C, obtains super-hydrophobic three
Tie up graphite ene coatings.Test shows that this three-dimensional graphite ene coatings are firmly combined with, and hydrophobic angle is more than 140 °, as shown in Figure 6.Fig. 3
For the scanning electron microscope diagram for the three-dimensional graphite ene coatings that the embodiment of the present invention 2 obtains, surface is in loose more as can be known from Fig. 3
The homogeneous structural in hole.Fig. 4 is the high resolution scanning electron microscope figure for the three-dimensional graphite ene coatings that the embodiment of the present invention 2 obtains,
This structure also has the other spinous process of micro/nano level as can be known from Fig. 4, can effectively improve specific surface area final optimization pass material
Hydrophobic performance.
Embodiment 3
Using expanded graphite as raw material, graphene oxide is prepared using Hummers methods are improved.By graphene oxide dispersion obtained
After centrifuging 1h with centrifuge with 10000 revs/min of speed, it is that monodisperse lacks layer graphene oxide to go upper layer clear solution, is used in combination
Deionized water is diluted to 2mg/ml.The 2mg/ml graphene oxide dispersions of 100ml are taken, 200mg o-phenylenediamines, ultrasound point is added
Magnetic control stirs 6h in 90 DEG C of water baths after dissipating 30 minutes.By gained reaction product successively after deionized water is cleaned multiple times,
Product is freeze-dried to obtain three-dimensional grapheme powder.Three-dimensional graphite obtained by 20mg is added in the poly-vinyl alcohol solution of 1ml 1%
Alkene powder, ultrasonic disperse are spin-coated on after 30 minutes on glass matrix, and 50 DEG C of dry 1h obtain three-dimensional graphite ene coatings.Stratification will be applied
In the octadecylamine alcoholic solution that 1mg/ml is added, taking-up is dried with alcohol rinse after reaction 1h at 80 DEG C, is obtained super-hydrophobic
Three-dimensional graphite ene coatings.Test shows that this three-dimensional graphite ene coatings are firmly combined with, and hydrophobic angle is more than 140 °.
Comparative example 1
Using crystalline flake graphite as raw material, graphene oxide is prepared using Hummers methods are improved.By graphene oxide dispersion obtained
After centrifuging 1h with centrifuge with 10000 revs/min of speed, it is that monodisperse lacks layer graphene oxide to go upper layer clear solution, is used in combination
Deionized water is diluted to 1mg/ml.The 1mg/ml graphene oxide dispersions of 100ml are taken, 50mg p-phenylenediamine, ultrasound point is added
Magnetic control stirs 6h in 90 DEG C of water baths after dissipating 30 minutes.Gained reaction product is successively repeatedly clear with deionized water through ethyl alcohol
Be washed till supernatant liquor be it is colourless after, product is freeze-dried to obtain three-dimensional grapheme powder.In the Nafion membrane solution of 1ml 2%
Three-dimensional grapheme powder obtained by 20mg is added, ultrasonic disperse is spin-coated on after 30 minutes on glass matrix, and 50 DEG C of dry 1h obtain three
Tie up graphite ene coatings.Test shows that this three-dimensional graphite ene coatings are firmly combined with, and hydrophobic angle is 130 ° or so.
Claims (9)
1. a kind of preparation method of the super-hydrophobic coat based on three-dimensional grapheme, which is characterized in that including：
Uniform three-dimensional grapheme dispersion liquid is obtained after three-dimensional grapheme powder and binder are sufficiently mixed, and is coated in matrix table
Face obtains three-dimensional graphite ene coatings；
Gained three-dimensional graphite ene coatings are placed in the organic solvent containing fluoro alkyl-silane or/and long-chain alkanamine at 80~120 DEG C
Lower heat preservation a period of time will obtain the super-hydrophobic coat to carry out hydrophobic treatment, or gained three-dimensional graphite ene coatings are placed in
It is kept the temperature for a period of time at 120~200 DEG C to carry out hydrophobic treatment in closed container containing fluoro alkyl-silane or/and long-chain alkanamine,
To obtain the super-hydrophobic coat.
2. preparation method according to claim 1, which is characterized in that Diamines object is added in graphene oxide dispersion
Matter, after keeping the temperature 2~12 hours at 25~90 DEG C, cleaned and freeze-drying obtains the three-dimensional grapheme powder.
3. preparation method according to claim 2, which is characterized in that the diamines substance is ethylenediamine, p-phenylenediamine
At least one of with o-phenylenediamine.
4. preparation method according to any one of claim 1-3, which is characterized in that the binder is water-soluble bonds
At least one of agent, preferably Nafion, polyvinyl alcohol, polyacrylic acid.
5. according to the preparation method described in any one of claim 1-4, which is characterized in that the three-dimensional grapheme powder and viscous
Knot agent mass ratio be（0.5~10）：1, preferably（1~2）：1.
6. preparation method according to any one of claims 1-5, which is characterized in that three-dimensional grapheme dispersion liquid also contains
Solvent, the solvent are preferably water.
7. according to the preparation method described in any one of claim 1-6, which is characterized in that the long-chain alkanamine is containing 8~20
The long-chain alkanamine of a C atoms, preferably at least one of amine octane, dodecyl amine, octadecylamine, the fluoro alkyl-silane are
The silane of chain fluoroalkyl containing 8~20 C atoms, preferably 17 fluorine ruthenium triethoxysilanes or/and ten trifluoro octyls
Trimethoxy silane.
8. according to the preparation method described in any one of claim 1-7, which is characterized in that in hydrophobic treatment, soaking time is
0.5~8 hour.
9. a kind of super-hydrophobic coat prepared according to any one of claim 1-8 the methods, which is characterized in that described super thin
The hydrophobic angle of water coating is more than 140 °.
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| CN109455708A (en) * | 2018-12-12 | 2019-03-12 | 中国科学院新疆理化技术研究所 | A kind of preparation method of super-hydrophobic three-dimensional grapheme film |
| CN109504212A (en) * | 2018-10-30 | 2019-03-22 | 绵阳麦思威尔科技有限公司 | A kind of watersoluble plumbago alkene super-hydrophobic self-cleaning paint and preparation method thereof for air-conditioning heat exchanger |
| CN110755888A (en) * | 2019-11-29 | 2020-02-07 | 济南大学 | Preparation method of super-hydrophobic oleophylic material |
| CN110903058A (en) * | 2019-11-30 | 2020-03-24 | 张国浩 | High-waterproof corrosion-resistant concrete for marine ecological engineering and preparation method thereof |
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| CN111500153A (en) * | 2020-05-26 | 2020-08-07 | 江苏金天辰新材料有限公司 | Three-dimensional graphene water-based heat-conducting anticorrosive paint and preparation method thereof |
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