CN109439188A - A kind of super-hydrophobic photo-thermal coating and preparation method thereof - Google Patents
A kind of super-hydrophobic photo-thermal coating and preparation method thereof Download PDFInfo
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- CN109439188A CN109439188A CN201811360036.5A CN201811360036A CN109439188A CN 109439188 A CN109439188 A CN 109439188A CN 201811360036 A CN201811360036 A CN 201811360036A CN 109439188 A CN109439188 A CN 109439188A
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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
- 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
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Abstract
The invention discloses a kind of super-hydrophobic photo-thermal coatings and preparation method thereof, the hydrophobic coating includes modified multilayer MXene compound, modified single layer MXene compound, ethyl acetate, dimethyl silicone polymer and curing agent, preparation method is easy, it can be fixed on different substrates after spraying, the hydrophobic surface constituted has mechanical, chemical resistance well.Meanwhile prepared hydrophobic coating has good light thermal property, in conjunction with its excellent hydrophobic performance, has very big application potential in optical drive field.
Description
Technical field
The invention belongs to Material Fields, and in particular to a kind of super-hydrophobic photo-thermal coating and preparation method thereof, this is dredged
The preparation method of water coating is easy, can be fixed on different substrates after spraying, and the hydrophobic surface constituted has good
Mechanical, chemical resistance.Meanwhile prepared hydrophobic coating has good light thermal property, in conjunction with its excellent hydrophobic performance,
Optical drive field has very big application potential.
Background technique
Super hydrophobic surface (water contact angle (CA) is greater than 150 °, and water skiing angle is less than 10 °) is due to its self-cleaning property, repellency etc.
Other excellent performances have been to be concerned by more and more people, and are with a wide range of applications, as water is collected, oil/water separates, antifog
Change, anti-freeze, drag reduction etc..In terms of constructing super hydrophobic surface, many technologies also have been developed, such as electro-deposition, chemical gas
The mutually technologies such as deposition, template, Electrospun and photoetching.
However, the simple and universal method for manufacturing this water-proof surface on a large scale on soft or hard matrix still have it is very high
Challenge.Also, compared with the super hydrophobic surface of traditional only waterproof, the preparation of the super hydrophobic surface of multifunction has
Bigger application potential, it has also become the hot spot of sufacing research.
Two-dimentional (2D) nano material has unique performance (such as: high light transmittance, flexibility, high surface area, adjustable electronic knot
Structure etc.), excellent performance and applicability are shown in the field of being widely applied.MXenes is as a kind of novel two-dimentional transition gold
Belong to carbide or carbonitride, by the Yury Gogotsi professor of Univ Drexel, the U.S. et al. discovery.Its chemical general formula can
Use Mn+1XnTzIt indicates, wherein M refers to magnesium-yttrium-transition metal (such as Ti, Zr, Hf, V, Nb, Ta, Cr, Sc), and X refers to that C or/and N, n are generally
1-3, TzRefer to surface group (such as O2-、OH-、F-、NH3、NH4 +Deng).Currently, MXenes is filled out in energy storage, absorption, sensor, conduction
It fills the fields such as agent and shows huge potentiality, MXene as a kind of novel two-dimensional layer compound there is excellent photo-thermal to turn
Transsexual energy, is with a wide range of applications in photo-thermal/field of photodynamic.Modified MXene not only has excellent light
Hot property also has good hydrophobicity, is conducive to construct multi-functional super hydrophobic surface, has in optical drive field very big
Application potential.However, 2D type MXenes has very strong hydrophily, inevitable oxygen may be caused in wet air
Change, and then influences its reliability.Therefore it is modified, and then changing its hydrophilicity is an important research topic.
Summary of the invention
Aiming at the problem that conventional method, the present invention provides a kind of super-hydrophobic photo-thermal coatings, can fix after spraying
There is good self-cleaning performance in the hydrophobic surface on different substrates, constituted, and there is mechanical, chemical resistance well.
The super-hydrophobic photo-thermal coating includes modified multilayer MXene compound, modified single layer MXene compound, acetic acid
Ethyl ester, dimethyl silicone polymer and curing agent, wherein the modified multilayer MXene compound and the modified single layer MXeneization
The weight ratio for closing object is 1:2 to 2:1.
Preferably, modified multilayer MXene compound and institute described in super-hydrophobic photo-thermal coating according to the present invention
The weight ratio for stating modified single layer MXene compound is 1:1 and 2:1, is still more preferably 1:1.
Preferably, in the super-hydrophobic photo-thermal coating, the modified multilayer MXene compound based on 100 parts by weight
With the weight total amount of both modified single layer MXene compounds, the dimethyl silicone polymer dosage is 50 to 300 weight
Part, further preferably 50 to 200 parts by weight are still more preferably 150 parts by weight.
Preferably, in the super-hydrophobic photo-thermal coating, the modified multilayer MXene compound based on 100 parts by weight
With the weight total amount of both modified single layer MXene compounds, the ethyl acetate dosage is 8000 to 13000 parts by weight,
Further preferably 9000 to 11000 parts by weight are still more preferably 10000 parts by weight.
Preferably, in the super-hydrophobic photo-thermal coating, the modified multilayer MXene compound based on 100 parts by weight
With the weight total amount of both modified single layer MXene compounds, the hardener dose is 5 to 30 parts by weight, further excellent
5 to 20 parts by weight are selected as, are still more preferably 15 parts by weight.
According to another aspect of the present invention, it is an object of the present invention to provide a kind of super-hydrophobic photo-thermal coatings
Preparation method includes the following steps:
1) multilayer/single layer MXene compound is prepared
By the Ti of 1 parts by weight3AlC2Powder is added in the HF solution that 10 parts by weight mass fractions are 10-80wt% and stirs 12-
36h；The suspension obtained after reaction is centrifuged by 3500r/min × 5min, and deionization washing until supernatant PH >=5, is poured out
Supernatant obtains multilayer MXene compound precipitation；Multilayer MXene compound precipitation described in 1 parts by weight is added to 10 parts by weight
Mass fraction is to be stirred at room temperature 1-5 days in the tetrapropylammonium hydroxide of 10-50wt%, and 3500r/min is centrifuged 1h, collects upper layer
Single layer MXene compound is lyophilized to obtain in clear liquid.
2) modified multilayer/single layer MXene compound
The perfluoro-compound of 400 parts by weight is added in 35 parts by weight of ethanol, 0.5-2h is stirred at room temperature；It will be obtained by step 1)
To multilayer/single layer MXene compound be distributed in above-mentioned perfluoro-compound alcohol dispersion liquid by weight 1:2 to 2:1, room temperature is stirred
1-5h is mixed, modified multilayer/single layer MXene compound is centrifuged to obtain, wherein the multilayer/single layer MXene compound total amount is total
100 parts by weight.
3) under stirring conditions, by the solidification of 50 to 300 parts by weight dimethyl silicone polymer (PDMS) and 15 parts by weight
Agent is added in the ethyl acetate of 10000 parts by weight, while multilayer/single layer MXene chemical combination that 2) gained perfluoro-compound is modified
Object is added in ethyl acetate, after stirring 30min, gained super-hydrophobic coat is sprayed to and is heated to 70 to 180 DEG C in matrix, Gu
Change 10-60min, obtains the surface with super-hydrophobic and excellent light thermal property.
The perfluoro-compound is selected from perfluoro capryl triethoxysilicane, heptadecafluorodecyl triethoxysilane and perfluoro decyl three
Methoxy silane.
The curing agent is DOW CORNING SYLGARD 184PDMS complete curing agent.
Preferably, the mass fraction of HF described in step 1) be preferably 10-80wt%, still more preferably for
50wt%；Mixing time 12-36h is still more preferably 18h；The mass fraction of tetrapropylammonium hydroxide is 10-50wt%,
It is still more preferably 25wt%, is stirred at room temperature 1-5 days, is still more preferably 3 days；
Preferably, perfluoro-compound described in step 2), which is added in ethyl alcohol, is stirred at room temperature 0.5-2h, still more preferably for
1h；Multilayer/single layer MXene compound is distributed in perfluoro-compound alcohol dispersion liquid by weight 1:2 to 2:1, further excellent
It is selected as 1:1；1-5h is stirred at room temperature, is still more preferably 3h；
Preferably, 50 to 300 parts by weight dimethyl silicone polymer described in step 3) is still more preferably 150 weight
Part；70 to 180 DEG C are heated to, is still more preferably 120 DEG C；Solidify 10-60min, is still more preferably 30min.
Preparation method according to the present invention includes the following steps:
1) multilayer/single layer MXene compound is prepared
By the Ti of 1 parts by weight3AlC2Powder is added in the HF solution that 10 parts by weight mass fractions are 50wt% and stirs 18h；Instead
Should after obtained suspension be centrifuged by 3500r/min × 5min, deionization washing until supernatant PH >=5, pours out supernatant
Liquid obtains multilayer MXene compound precipitation；1 parts by weight precipitating is added to 4 third that 10 parts by weight mass fractions are 25wt%
It in base ammonium hydroxide, is stirred at room temperature 3 days, 3500r/min is centrifuged 1h, collects supernatant liquor, single layer MXene compound is lyophilized to obtain；
2) modified multilayer/single layer MXene compound
The perfluoro-compound of 400 parts by weight is added in 35 parts by weight of ethanol, 1h is stirred at room temperature；Step 1) is obtained
Multilayer/single layer MXene is distributed in above-mentioned perfluoro-compound alcohol dispersion liquid by weight 1:1, and 3h is stirred at room temperature, and is centrifuged modified
Multilayer/single layer MXene compound, wherein the multilayer/single layer MXene compound total amount amounts to 100 parts by weight.
3) under stirring conditions, the curing agent of 150 parts by weight dimethyl silicone polymers (PDMS) and 15 parts by weight is added
Enter into the ethyl acetate of 10000 parts by weight, while the modified multilayer/single layer MXene compound of 2) gained perfluoro-compound being added
Enter into ethyl acetate, after stirring 30min, gained super-hydrophobic coat is sprayed on different substrates and is heated to 120 DEG C, solidification
30min obtains the surface with super-hydrophobic and excellent light thermal property.
Beneficial effect
1, in the preparation method of super-hydrophobic photo-thermal coating according to the present invention, preparation method is easy, applied widely；
2, super-hydrophobic photo-thermal coating according to the present invention can be fixed on different substrates after spraying, and what is constituted dredges
Water surface has good self-cleaning performance, has good mechanical tenacity, chemical resistance；
3, super-hydrophobic photo-thermal coating according to the present invention has good light thermal property；
4, coating prepared in accordance with the present invention combines its super-hydrophobicity and light thermal property, and accurately long-range CD-ROM drive may be implemented
Object of which movement.
Detailed description of the invention
Fig. 1 is super-hydrophobic photo-thermal MXene coating preparation flow figure according to the present invention.
Fig. 2 is the multilayer/single layer MXene and precursor Ti prepared according to embodiment 13AlC2X-ray diffractogram.
Fig. 3 is the transmission electron microscope picture of the multilayer MXene scanning electron microscope (SEM) photograph and single layer MXene that are prepared according to embodiment 1.
Fig. 4 is according to the modified multilayer of 1 perfluoro-compound of embodiment/single layer MXene photoelectron spectroscopy figure and Fourier
Infared spectrum figure.
Fig. 5 is the scanning electron microscope (SEM) photograph of the super-hydrophobic MXene coating prepared according to embodiment 1.
Fig. 6 is the atomic force microscopy diagram of the super-hydrophobic MXene coating prepared according to embodiment 1.
Fig. 7 is to be dredged according to multilayers different in embodiment 1 to 3 and comparative example 1 to 2/single layer MXene weight ratio preparation
The contact angle test datagram of water coating.
Fig. 8 is the photo being respectively coated according to super-hydrophobic MXene coating prepared by embodiment 1 on cotton, glass plate, sweeps
Retouch electron microscope and contact angle test figure.
Fig. 9 is water contact angle after the rubbed test of super-hydrophobic MXene coating prepared according to embodiment 1, gluing test
Variation.
Figure 10 is the variation of the super-hydrophobic MXene coating water contact angle after acid, alkali process prepared according to embodiment 1.
Figure 11 is the self-cleaning-test of the super-hydrophobic MXene coating prepared according to embodiment 1.
Figure 12 is that the light thermal property of the super-hydrophobic MXene coating prepared according to embodiment 1 to 3 and comparative example 1 to 2 is surveyed
Examination.
Figure 13 is the test of the photostability and photothermal conversion rate of the super-hydrophobic MXene coating prepared according to embodiment 1.
Figure 14 is that the optical drive of the super-hydrophobic MXene coating prepared according to embodiment 1 is tested.
Specific embodiment
After the super-hydrophobic MXene coating that method produced according to the present invention is prepared is coated on different substrate materials surface, obtain
Super hydrophobic surface not only has excellent hydrophobicity and self-cleaning property, is also equipped with preferable mechanical, chemical resistance.According to Fig. 1
Super-hydrophobic photo-thermal MXene coating preparation flow figure of the invention.
Multilayer described in preparation method according to the present invention/single layer MXene is distributed to entirely by weight 1:2 to 2:1
In fluoride alcohol dispersion liquid, further preferably 1:1 and 2:1 are still more preferably 1:1.As multilayer/single layer MXene
Weight ratio is too small, and when being, for example, less than 1:2, then the roughness of coating is insufficient, and hydrophobic properties of the surface are insufficient, and super-hydrophobic effect is not achieved
Fruit, and when multilayer/single layer MXene weight ratio is excessive, when being greater than 2:1, coating surface hydrophobicity can be deteriorated, and its light
Hot property can also reduce.
In preparation method according to the present invention, the modified multilayer MXene compound and institute based on 100 parts by weight
50 to 300 parts by weight dimethyl silicone polymers are distributed to acetic acid second by the weight total amount for stating both modified single layer MXene compounds
In ester, further preferably 50 to 200 parts by weight are still more preferably 150 parts by weight.When the amount of dimethyl silicone polymer is small
When 50 parts by weight, the cohesive force of coating and substrate can be deteriorated, and when the amount of dimethyl silicone polymer is greater than 300 parts by weight,
The roughness of coating is lower, and hydrophobicity is deteriorated.
In preparation method according to the present invention, react solid under the dimethyl silicone polymer high temperature with curing agent
Change, play the role of binder, modified hydrophobic multilayer MXene and few layer MXene can be bonded in matrix, to product
Surface mechanical tenacity play an important role.
In preparation method according to the present invention, the modified multilayer MXene compound and institute based on 100 parts by weight
The weight total amount for stating both modified single layer MXene compounds, by 5 to 30 parts by weight curing agent (DOW CORNING SYLGARD 184PDMS
Complete curing agent) it is distributed in ethyl acetate, further preferably 5 to 20 parts by weight, it is still more preferably 15 parts by weight.When
When curing agent is less than 5 parts by weight, dimethyl silicone polymer cannot be cured completely, and coating surface after heating is caused to have residual not
The dimethyl silicone polymer of reaction, hydrophobicity are deteriorated；When curing agent is greater than 30 parts by weight, the extra a part of curing agent not with it is poly-
Dimethyl siloxane reaction causes coating surface after heating to have curing agent residue, and hydrophobicity is equally deteriorated.
The super-hydrophobic MXene coating of preparation method according to the present invention preparation has excellent stable light thermal property, turn
Changing efficiency can achieve 30.3%.
After the super-hydrophobic photo-thermal MXene coating of preparation method according to the present invention preparation is coated on stromal surface,
Under the irradiation of infrared laser lamp, accurately long-range optical drive can be realized to object.
Hereinafter, will be described in detail the present invention.Before doing so, it should be appreciated that in this specification and appended
Claims used in term should not be construed as being limited to general sense and dictionary meanings, and inventor should allowed
On the basis of the appropriate principle for defining term to carry out best interpretations, according to meaning corresponding with technical aspect of the invention and generally
Thought explains.Therefore, description presented herein is not intended to limitation originally merely for the sake of the preferred embodiment for illustrating purpose
The range of invention, it will thus be appreciated that without departing from the spirit and scope of the present invention, it can be obtained by it
His equivalents or improved procedure.
Following embodiment is enumerated only as the example of embodiment of the present invention, does not constitute any limit to the present invention
System, it will be appreciated by those skilled in the art that modification in the range of without departing from essence and design of the invention each falls within the present invention
Protection scope.Unless stated otherwise, reagent and instrument used in the following embodiment are commercially available product.
Embodiment 1
1) multilayer/single layer MXene compound is prepared
By the Ti of 1 parts by weight3AlC2Powder is added in the HF solution that 10 parts by weight mass fractions are 50wt% and stirs 18h；Instead
Should after obtained suspension be centrifuged by 3500r/min × 5min, deionization washing until supernatant PH >=5, pours out supernatant
Liquid obtains multilayer MXene compound precipitation；1 parts by weight precipitating is added to 4 third that 10 parts by weight mass fractions are 25wt%
It in base ammonium hydroxide, is stirred at room temperature 3 days, 3500r/min is centrifuged 1h, collects supernatant liquor, single layer MXene compound is lyophilized to obtain.
2) modified multilayer/single layer MXene compound
The perfluoro capryl triethoxysilicane of 400 parts by weight is added in 35 parts by weight of ethanol, 1h is stirred at room temperature；By step
1) obtained multilayer/single layer MXene is distributed in above-mentioned perfluoro capryl triethoxysilicane alcohol dispersion liquid by weight 1:1,
3h is stirred at room temperature, modified multilayer/single layer MXene compound is centrifuged to obtain, wherein the multilayer/single layer MXene compound total amount
Total 100 parts by weight.
3) under stirring conditions, the curing agent of 150 parts by weight dimethyl silicone polymers (PDMS) and 15 parts by weight is added
Enter into the ethyl acetate of 10000 parts by weight, at the same by 2) gained perfluoro capryl triethoxy Si modification multilayer/single layer
MXene compound (multilayer/single layer MXene compound total amount amounts to 100 parts by weight) is added in ethyl acetate, stirring
After 30min, by gained super-hydrophobic coat (PDMS@m/d-F2) spray on different substrates and be heated to 120 DEG C of solidification 30min, it obtains
To the surface with super-hydrophobic and excellent light thermal property.
As shown in Fig. 2, using X ray diffracting spectrum (XRD) to the multilayer/single layer MXene and precursor Ti of preparation3AlC2Into
Row analysis, MXene (002) characteristic peak is displaced to 9.0 ° by 9.5 °, then is displaced to 7.0 °, and interlamellar spacing is gradually increased, and is shown
Ti3AlC2Middle Al layers is successfully etched away, and realizes etching and removing to MXene.
As shown in figure 3, using scanning electron microscope (SEM) and transmission electron microscope (TEM) to the multilayer of preparation/mono-
Layer MXene is analyzed, and the successful synthesis of multilayer/single layer MXene is further demonstrated.
As shown in figure 4, to Si member in modified multilayer/single layer MXene photoelectron spectroscopy (XPS) analysis of preparation
Perfluoro capryl triethoxysilicane characteristic peak 1020 (Si-O) and 698 (C-Si) are sent out in element and Fourier's infrared spectrum (FTIR)
It is existing, show successful modification of the perfluoro-compound to MXene.
As shown in figure 5, analyzed using MXene coating of the scanning electron microscope (SEM) to preparation, it was demonstrated that it is micro-
Receive the successful synthesis of rough surface structure.
As shown in fig. 6, being analyzed using MXene coating of the atomic force scanning electron microscope (AFM) to preparation, further prove
The successful synthesis of its micro-nano rough surface structure.
As shown in figure 8, MXene coating PDMS@m/d-F prepared by embodiment 12Spray to cotton (a) and glass plate (b)
On, two stromal surfaces all reach super-hydrophobicity.
Embodiment 2
In addition to multilayer/single layer MXene is distributed to above-mentioned perfluoro capryl triethoxysilicane alcohol dispersion liquid by weight 1:2
In other than, hydrophobic photo-thermal MXene coating (PDMS@m/d-F is made according to the identical preparation step of embodiment 11)。
Embodiment 3
In addition to multilayer/single layer MXene is distributed to above-mentioned perfluoro capryl triethoxysilicane alcohol dispersion liquid by weight 2:1
In other than, hydrophobic photo-thermal MXene coating (PDMS@m/d-F is made according to the identical preparation step of embodiment 13)。
Comparative example 1
Other than only multilayer MXene is distributed in above-mentioned perfluoro capryl triethoxysilicane alcohol dispersion liquid, according to reality
Apply the photo-thermal MXene coating (PDMS@m-F) that the identical preparation step of example 1 is made hydrophobic
Comparative example 2
Other than only single layer MXene is distributed in above-mentioned perfluoro capryl triethoxysilicane alcohol dispersion liquid, according to reality
Apply the photo-thermal MXene coating (PDMS@d-F) that the identical preparation step of example 1 is made hydrophobic
As shown in fig. 7, carrying out surface water contact angle survey to the coating prepared in embodiment 1 to 3 and comparative example 1 to 2
Examination, comparison show the MXene coating PDMS m/d-F prepared in embodiment 12Super-hydrophobicity is good, and in comparative example 1 and 2
Then hydrophobic performance is not ideal enough for the MXene coating (PDMS@m-F) and MXene coating (PDMS@d-F) prepared respectively.
EXPERIMENTAL EXAMPLE 1: surface mechanical tenacity experiment
Rub resistance experiment: the coating PDMS@m/d-F prepared in embodiment 1 will be coated with2Filter paper be affixed on glass slide,
It is placed on sand paper downward containing the cated side, puts the weight of a 200g weight above, with tweezers by glass radial push
Glass slide is rotated by 90 ° by 10cm, reversely pushes 10cm, as a cycle；
Gluing experiment: being taken adhesive surface coating using double-sided adhesive, after open adhesive tape, as a cycle.
Fig. 9 is the coating PDMS@m/d-F prepared in embodiment 12Coating stick on filter paper repeatedly rubbed, gluing
Surface water contact angle variation after test, test result show that after mechanical damage, coating surface still shows good super
Hydrophobicity shows its excellent mechanical tenacity.
EXPERIMENTAL EXAMPLE 2: surface chemistry patience experiment
The PDMS@m/d-F prepared in embodiment 1 will be coated with2The sheet glass of coating is immersed in hydrochloric acid (pH=1) and sodium hydroxide
(pH=14) different time in solution takes out the variation for testing its water contact angle.
Figure 10 is the PDMS@m/d-F prepared in embodiment 12Coating sticks on sheet glass when being dipped in acid, aqueous slkali difference
Between after surface water contact angle variation, test result show through chemical treatment after, coating surface still shows good super thin
It is aqueous, show its excellent chemical resistance.
EXPERIMENTAL EXAMPLE 3: automatically cleaning experiment
A, a small amount of dust is placed in the PDMS@m/d-F prepared in embodiment 12The surface of coating, on it end be added dropwise go from
Sub- water tests its self-cleaning property；B, the PDMS@m/d-F prepared in embodiment 12The surface upper end of coating dropper is added dropwise several
Common liquid (liquid such as deionized water, tap water, coffee, milk, watermelon juice and orange juice), observes coating surface in kind life
To the repulsion situation of these types of liquid.
The effect picture of Figure 11 automatically cleaning experiment schemes to show that dust is successfully brought away from coating surface under the flowing of water in a, and
The trace infected by soil is not left, and figure b shows the PDMS@m/d-F prepared in embodiment 12Repulsion of the coating to plurality of liquid
Spherical shape is all presented in coating surface in property, these drops, these results indicate the PDMS@m/d-F prepared in embodiment 12Coating
Self-cleaning property.
EXPERIMENTAL EXAMPLE 4: light thermal property test
Coating prepared by embodiment 1 to 3 and comparative example 1 to 2 is coated on filter paper, with the 808nm of varying strength
Near-infrared laser irradiates coating, goes the variation of monitoring Coated Surface Temperature in infrared thermal imager (FLIRA325SC camera).
Figure 12 is the photo-thermal test result figure according to the coating prepared in embodiment 1 to 3 and comparative example 1 to 2, from figure
In it can be seen that under the irradiation of infrared laser, the coating containing MXene can be raised to 100 DEG C or so in 60s, show have
Good light thermal property.
Figure 13 a is the PDMS m/d-F prepared according to embodiment 12The light stability test figure of coating, by repeatedly open/
Guan Hou, MXene coating still have good light thermal property, show it with good photo and thermal stability；It is calculated according to Figure 13 b
To PDMS@m/d-F2The photothermal conversion rate of coating is 30.3%.
EXPERIMENTAL EXAMPLE 5: optical drive test
Coating PDMS@m/d-F prepared by embodiment 12Filter paper two sides coated on specific shape, uses 1W/cm2808nm
Near-infrared laser irradiation coating filter paper different location, to realize different long-range optical drive behaviors.
Figure 14 is the PDMS m/d-F prepared according to embodiment 12Coating is after being coated on filter paper two sides, in near-infrared laser
Irradiation under, may be implemented different optical drive behaviors (a linear motion, b turn left movement, c clockwise rotation).
Above embodiments are enumerated only as the example of embodiment of the present invention, do not constitute any limit to the present invention
System, it will be appreciated by those skilled in the art that modification in the range of without departing from essence and design of the invention each falls within the present invention
Protection scope.
Claims (9)
1. a kind of super-hydrophobic photo-thermal coating, including modified multilayer MXene compound, modified single layer MXene compound, acetic acid second
Ester, dimethyl silicone polymer and curing agent, wherein the modified multilayer MXene compound and the modified single layer MXene chemical combination
The weight ratio of object is 1:2 to 2:1.
2. super-hydrophobic photo-thermal coating according to claim 1, which is characterized in that institute in the super-hydrophobic photo-thermal coating
The weight ratio for stating modified multilayer MXene compound and the modified single layer MXene compound is 1:1 and 2:1, still more preferably
For 1:1.
3. super-hydrophobic photo-thermal coating according to claim 1, which is characterized in that in the super-hydrophobic photo-thermal coating,
The weight of the modified multilayer MXene compound and both modified single layer MXene compounds based on 100 parts by weight is total
Amount, the dimethyl silicone polymer dosage are 50 to 300 parts by weight, and further preferably 50 to 200 parts by weight are further excellent
It is selected as 150 parts by weight.
4. super-hydrophobic photo-thermal coating according to claim 1, which is characterized in that in the super-hydrophobic photo-thermal coating,
The weight of the modified multilayer MXene compound and both modified single layer MXene compounds based on 100 parts by weight is total
Amount, the ethyl acetate dosage be 8000 to 13000 parts by weight, further preferably 9000 to 11000 parts by weight, further
Preferably 10000 parts by weight.
5. super-hydrophobic photo-thermal coating according to claim 1, which is characterized in that in the super-hydrophobic photo-thermal coating,
The weight of the modified multilayer MXene compound and both modified single layer MXene compounds based on 100 parts by weight is total
Amount, the hardener dose are 5 to 30 parts by weight, and further preferably 5 to 20 parts by weight are still more preferably 15 weight
Part.
6. a kind of preparation method of super-hydrophobic photo-thermal coating, includes the following steps:
1) multilayer/single layer MXene compound is prepared
By the Ti of 1 parts by weight3AlC2Powder is added in the HF solution that 10 parts by weight mass fractions are 10-80wt% and stirs 12-36h；
The suspension obtained after reaction is centrifuged by 3500r/min × 5min, and deionization washing until supernatant PH >=5, pours out supernatant
Liquid obtains multilayer MXene compound precipitation；Multilayer MXene compound precipitation described in 1 parts by weight is added to 10 parts by weight quality
Score is to be stirred at room temperature 1-5 days in the tetrapropylammonium hydroxide of 10-50wt%, and 3500r/min is centrifuged 1h, collects supernatant liquor,
Single layer MXene compound is lyophilized to obtain；
2) modified multilayer/single layer MXene compound
The perfluoro-compound of 400 parts by weight is added in 35 parts by weight of ethanol, 0.5-2h is stirred at room temperature；Step 1) is obtained
Multilayer/single layer MXene compound is distributed in above-mentioned perfluoro-compound alcohol dispersion liquid by weight 1:2 to 2:1, and 1- is stirred at room temperature
5h is centrifuged to obtain modified multilayer/single layer MXene compound, wherein the multilayer/single layer MXene compound total amount amounts to 100 weights
Measure part；
3) under stirring conditions, the curing agent of 50 to 300 parts by weight dimethyl silicone polymers (PDMS) and 15 parts by weight is added
Enter into the ethyl acetate of 10000 parts by weight, while the modified multilayer/single layer MXene compound of 2) gained perfluoro-compound being added
Enter into ethyl acetate, after stirring 30min, gained super-hydrophobic coat is sprayed to and is heated to 70 to 180 DEG C in matrix, solidification
10-60min obtains the surface with super-hydrophobic and excellent light thermal property；
The perfluoro-compound is selected from perfluoro capryl triethoxysilicane, heptadecafluorodecyl triethoxysilane and perfluoro decyl trimethoxy
Base silane；
The curing agent is 184 PDMS complete curing agent of DOW CORNING SYLGARD.
7. the preparation method of super-hydrophobic photo-thermal coating according to claim 6, which is characterized in that HF described in step 1)
Mass fraction be preferably 10-80wt%, be still more preferably 50wt%；Mixing time 12-36h, still more preferably
For 18h；The mass fraction of tetrapropylammonium hydroxide is 10-50wt%, is still more preferably 25wt%, is stirred at room temperature 1-5 days,
It is still more preferably 3 days.
8. the preparation method of super-hydrophobic photo-thermal coating according to claim 6, which is characterized in that complete described in step 2)
Fluoride, which is added in ethyl alcohol, is stirred at room temperature 0.5-2h, is still more preferably 1h；Multilayer/single layer MXene compound is by weight
It is distributed in perfluoro-compound alcohol dispersion liquid than 1:2 to 2:1, is still more preferably 1:1；1-5h is stirred at room temperature, further
Preferably 3h.
9. the preparation method of super-hydrophobic photo-thermal coating according to claim 6, which is characterized in that 50 described in step 3)
It is still more preferably 150 parts by weight to 300 parts by weight dimethyl silicone polymers；70 to 180 DEG C are heated to, it is further excellent
It is selected as 120 DEG C；Solidify 10-60min, is still more preferably 30min.
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