CN116333592A - Transparent super-hydrophobic deicing coating and preparation method and application thereof - Google Patents
Transparent super-hydrophobic deicing coating and preparation method and application thereof Download PDFInfo
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- CN116333592A CN116333592A CN202310186219.4A CN202310186219A CN116333592A CN 116333592 A CN116333592 A CN 116333592A CN 202310186219 A CN202310186219 A CN 202310186219A CN 116333592 A CN116333592 A CN 116333592A
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- 230000003075 superhydrophobic effect Effects 0.000 title claims abstract description 73
- 238000000576 coating method Methods 0.000 title claims abstract description 56
- 239000011248 coating agent Substances 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims abstract description 47
- 239000004205 dimethyl polysiloxane Substances 0.000 claims abstract description 46
- -1 polydimethylsiloxane Polymers 0.000 claims abstract description 45
- 239000002105 nanoparticle Substances 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000011859 microparticle Substances 0.000 claims abstract description 22
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 21
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 21
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- 238000000034 method Methods 0.000 claims description 16
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- 102000020897 Formins Human genes 0.000 claims description 7
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- 239000011259 mixed solution Substances 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 7
- 238000002834 transmittance Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 3
- 229910001887 tin oxide Inorganic materials 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 4
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 30
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- 238000012360 testing method Methods 0.000 description 12
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- 238000009825 accumulation Methods 0.000 description 5
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- 230000000052 comparative effect Effects 0.000 description 4
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- 238000001816 cooling Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 description 2
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 description 2
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- 238000010521 absorption reaction Methods 0.000 description 1
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 description 1
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- 239000004246 zinc acetate Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- 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
- C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
- C03C17/32—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material with synthetic or natural resins
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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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
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2231—Oxides; Hydroxides of metals of tin
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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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- Wood Science & Technology (AREA)
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- General Chemical & Material Sciences (AREA)
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Abstract
The invention provides a transparent super-hydrophobic deicing coating, a preparation method and application thereof. The deicing coating comprises a carrier and a superhydrophobic layer; the super-hydrophobic layer is positioned on the carrier and has a micro-nano structure formed by polydimethylsiloxane micro-particles and metal oxide nano-particles. According to the invention, the micro-nano structure is constructed by utilizing the micro-particles and the nano-particles which are highly transmitted in the visible light region, so that the surface with both transparency and superhydrophobic performance is formed. And more possibilities are provided for enriching the superhydrophobic surface and realizing efficient deicing. The high-transparency super-hydrophobic deicing coating can meet the super-hydrophobic performance and simultaneously maintain higher transparency, and can enable water drops to roll off and wash away dust particles, so that the high-transparency super-hydrophobic deicing coating has potential application prospects in various fields such as telescope lenses, windows, windshields, electronic displays, solar cells and the like.
Description
Technical Field
The invention belongs to the technical field of transparent super-hydrophobic deicing, and particularly relates to a transparent super-hydrophobic deicing coating, a preparation method and application thereof.
Background
The occurrence and accumulation of ice accumulation and ice coating in a low-temperature high-humidity environment can cause serious damage to industries such as road traffic, electric power transportation, aviation delivery, wind power generation and the like, even harm lives and cause serious property loss. In the power transportation industry, the damage caused by ice coating is particularly remarkable. Ice accumulation greatly increases the weight of the wire, which can cause wire breakage, tower twisting, and even collapse. Aiming at ice accumulation and ice coating on the surface, the traditional deicing mode mainly comprises thermal deicing and mechanical deicing of active deicing. These modes are difficult to operate, have high energy consumption and are easy to cause great damage to equipment.
Superhydrophobic surfaces can retard the formation of surface ice crystals to be used as anti-icing surfaces, and are desirable to achieve suppression or prevention of surface ice coating formation and efficient removal of surface ice. The reason is that the super-hydrophobic surface has very good repulsive effect on water, has a higher water contact angle and a lower rolling angle, and ensures that water rolls off on the surface to prevent the adhesion of water. However, the micro-nano structure of the super-hydrophobic surface is constructed to lose the transparency of the coating, so that the obtained coating is difficult to maintain high transparency while meeting the super-hydrophobic performance.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a transparent super-hydrophobic deicing coating, and a preparation method and application thereof. The high-transparency super-hydrophobic deicing coating disclosed by the invention can meet the super-hydrophobic performance and simultaneously maintain higher transparency, so that the high-transparency super-hydrophobic deicing coating not only can enable water drops to roll off and wash away dust particles, but also can realize efficient deicing of the surface of the coating, and has potential application prospects in various fields such as telescope lenses, windows, windshields, electronic displays, solar cells and the like.
The invention aims at realizing the following technical scheme:
a transparent superhydrophobic deicing coating comprising a carrier and a superhydrophobic layer; the super-hydrophobic layer is positioned on the carrier and has a micro-nano structure formed by polydimethylsiloxane micro-particles and metal oxide nano-particles.
According to the embodiment of the present invention, the thickness of the carrier is not particularly defined, and may be reasonably selected according to the use environment thereof, and is exemplified by 1 to 10mm.
According to an embodiment of the present invention, the carrier is made of transparent material; illustratively, the carrier is glass.
According to an embodiment of the invention, the thickness of the superhydrophobic layer is 2-6 μm, for example 2 μm, 3 μm, 4 μm, 5 μm or 6 μm.
According to an embodiment of the invention, the polydimethylsiloxane microparticles have a particle size of 1-10 μm, for example 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm or 10 μm.
According to an embodiment of the invention, the metal oxide nanoparticles have a median particle diameter of 50nm to 500nm, for example 50nm, 100nm, 150nm, 200nm, 250nm, 300nm, 350nm, 400nm, 450nm or 500nm.
According to an embodiment of the present invention, the metal oxide nanoparticles are, for example, zinc oxide (ZnO) or tin oxide (SnO).
According to an embodiment of the present invention, the zinc oxide (ZnO) or tin oxide (SnO) has a band gap wavelength shorter than the visible range 400-700nm, contributes to reduction of absorption in the visible range, has a light transmittance of approximately 90% in the visible region, and has a high transmittance (minimum reflectance) of low refractive index to visible light.
According to an embodiment of the invention, the mass ratio of polydimethylsiloxane microparticles to metal oxide nanoparticles is in the range of 1:5 to 30, for example 1:5, 1:8, 1:10, 1:15, 1:20, 1:25 or 1:30.
According to an embodiment of the present invention, the micro-nano structure is a disordered micro-nano structure, which means that constituent units of the structure (micro-scale and/or nano-scale protruding structures) are arranged in a random manner.
According to an embodiment of the invention, the micro-nano structure refers to a micro-scale and/or nano-scale raised structure protruding out of the plane of the carrier surface, wherein the micro-scale and/or nano-scale raised structure is formed by polydimethylsiloxane micro-particles and metal oxide nano-particles. Wherein, the micrometer scale is 1-10 micrometers; the nanoscale refers to a nanoscale of less than 1 micron, for example, 50nm to 500nm.
According to the embodiment of the invention, the transparent super-hydrophobic deicing coating has super-hydrophobic property, has a high contact angle to water and low contact hysteresis, and can reduce the formation of surface water accumulation. Specifically, the contact angle of the transparent super-hydrophobic deicing coating to water is greater than or equal to 150 degrees.
According to the embodiment of the invention, the transparent super-hydrophobic deicing coating has the characteristic of transparency, and the transmittance of the transparent super-hydrophobic deicing coating under ultraviolet-visible-near infrared light (250 nm-2500 nm) is more than or equal to 82%.
According to the embodiment of the invention, the transparent super-hydrophobic deicing coating comprises the super-hydrophobic layer with the micro-nano structure, and air can be trapped in the micro-nano structure of the super-hydrophobic layer, so that the contact area between water on the surface of the super-hydrophobic layer and the super-hydrophobic layer is reduced. Interactions between trapped air, water droplets and the superhydrophobic layer surface are minimized and when the surface is slightly tilted, the water droplets slide more easily on the superhydrophobic layer surface and the energy barrier for removing water droplets from the superhydrophobic layer surface is reduced. Thus, deposited water droplets can be removed from the sub-zero hydrophobic surface by gravity prior to freezing, thereby achieving water removal.
Furthermore, the surface of the superhydrophobic layer can remove melted water or rainwater, leaving a dry surface immediately; thus, reflection and thermal mass of the melted water can be avoided, thereby greatly reducing heat loss. Dust and other contaminants are easily washed away by the melted water or rain, leaving a clean surface to prevent shading and scattering of sunlight, thereby helping to maintain high photo-thermal efficiency for a long period of time.
The invention also provides a preparation method of the transparent super-hydrophobic deicing coating, which comprises the following steps:
1) Adding polydimethylsiloxane into a sintering container, placing a carrier on the top of the sintering container, placing the sintering container filled with polydimethylsiloxane into a sintering device for sintering treatment, and obtaining a polydimethylsiloxane micron particle layer on the surface of the carrier;
2) And mixing the metal oxide nano particles, the polydimethylsiloxane and the curing agent to obtain a mixed solution, spraying the mixed solution on the surface of the polydimethylsiloxane micro-particle layer, curing, and obtaining the super-hydrophobic layer with the micro-nano structure and comprising the polydimethylsiloxane micro-particles and the metal oxide nano particles on the surface of the carrier.
According to an embodiment of the present invention, in step 1), the polydimethylsiloxane added to the sintering vessel is in a liquid state, and the polydimethylsiloxane does not contain a curing agent.
According to an embodiment of the present invention, in step 1), the temperature of the sintering process is 120 to 180 ℃, the time of the sintering process is 1 to 5 hours, and the temperature rising rate of the sintering process is 5 to 15 ℃ for min -1 。
Illustratively, in step 1), the temperature of the sintering process is 150 ℃, the time of the sintering process is 5 hours, and the temperature rise rate of the sintering process is 10 ℃ for min -1 。
According to an embodiment of the invention, in step 1), the sintering vessel is, for example, a crucible, preferably a rectangular parallelepiped crucible.
According to an embodiment of the invention, in step 1), the sintering device is, for example, a muffle furnace.
According to an embodiment of the invention, in step 1), the support is defined as described above.
According to an embodiment of the invention, in step 1), the polydimethylsiloxane liquid is not in contact with the carrier prior to sintering; in the sintering process, the polydimethylsiloxane serving as an additive curing agent does not undergo a curing reaction, but is deposited on the surface of the carrier in a vapor deposition mode, so that the polydimethylsiloxane micron particle layer is obtained.
In step 1) according to an embodiment of the present invention, a clean glass slide is illustratively placed over a rectangular parallelepiped crucible, which is filled with 2ml of polydimethylsiloxane (without solid content)A chemosing agent) and the distance between the polydimethylsiloxane and the slide surface is about 2cm; then the crucible with the glass slide is put into a muffle furnace and heated for 2 hours at 150 ℃ with the temperature rising rate of 10 ℃ for min -1 A polydimethylsiloxane microparticle layer was obtained on the surface of the slide.
According to an embodiment of the invention, in step 2), the curing agent is selected from curing agents known in the art capable of curing polydimethylsiloxanes.
According to an embodiment of the present invention, in step 2), the curing agent is added in an amount of 5 to 15wt% based on the mass of the polydimethylsiloxane, for example, 5wt%, 6wt%, 7wt%, 8wt%, 9wt%, 10wt%, 11wt%, 12wt%, 13wt%, 14wt% or 15wt%.
According to an embodiment of the invention, in step 2), the definition of the metal oxide nanoparticles is as indicated above.
According to an embodiment of the invention, in step 2), the mass ratio of polydimethylsiloxane microparticles to metal oxide nanoparticles in the superhydrophobic layer is in the range of 1:5-30, for example 1:5, 1:8, 1:10, 1:15, 1:20, 1:25 or 1:30.
According to an embodiment of the invention, in step 2), the mixing is performed, for example, under ultrasound conditions. Illustratively, the sonication is performed at 300W power at room temperature in order to uniformly disperse the metal oxide particles.
According to an embodiment of the present invention, in step 2), the spraying pressure is 0.2 to 0.5MPa.
According to an embodiment of the present invention, in step 2), the spraying is, for example, spraying the surface of the above-mentioned polydimethylsiloxane nanoparticle layer at a distance of 15 to 20cm from the slide glass using a spray gun under a pressure of 0.2 to 0.5MPa.
According to an embodiment of the present invention, in step 2), the curing temperature is 80 to 120 ℃, and the curing time is 1 to 5 hours.
According to an embodiment of the present invention, in step 2), the metal oxide nanoparticles may be prepared by methods known in the art, or may be purchased through the above-mentioned routes.
According to an embodiment of the present invention, in step 2), the mixed solution to be sprayed includes metal oxide nanoparticles, polydimethylsiloxane and a curing agent, which is mainly used for ensuring that the metal oxide nanoparticles can be bonded to the polydimethylsiloxane microparticles during the curing process of the polydimethylsiloxane, so as to form a superhydrophobic layer with a micro-nano structure; in addition, the reinforcing effect can be achieved, and the acting time of the super-hydrophobic layer can be prolonged.
The invention also provides the transparent super-hydrophobic deicing coating prepared by the method.
The invention also provides application of the transparent super-hydrophobic deicing coating, which is used in the deicing field.
According to embodiments of the present invention, the deicing is used in the fields of telescope lenses, windows, windshields, electronic displays, solar cells, and the like.
The invention has the beneficial effects that:
the invention provides a transparent super-hydrophobic deicing coating, a preparation method and application thereof. According to the invention, the micro-nano structure is constructed by utilizing the micro-particles and the nano-particles which are highly transmitted in the visible light region, so that the surface with both transparency and superhydrophobic performance is formed. And more possibilities are provided for enriching the superhydrophobic surface and realizing efficient deicing. The high-transparency super-hydrophobic deicing coating can meet the super-hydrophobic performance and simultaneously maintain higher transparency, and can enable water drops to roll off and wash away dust particles, so that the high-transparency super-hydrophobic deicing coating has potential application prospects in various fields such as telescope lenses, windows, windshields, electronic displays, solar cells and the like.
Detailed Description
The preparation method of the present invention will be described in further detail with reference to specific examples. It is to be understood that the following examples are illustrative only and are not to be construed as limiting the scope of the invention. All techniques implemented based on the above description of the invention are intended to be included within the scope of the invention.
The experimental methods used in the following examples are all conventional methods unless otherwise specified; the reagents, materials, etc. used in the examples described below are commercially available unless otherwise specified.
Example 1
(1) 2.95g of zinc acetate was weighed, put into a Erlenmeyer flask, then 125ml of methanol was added, and a condenser, a thermometer and a dropping device were installed. The oil bath was heated to 62 ℃ and allowed to stabilize while stirring. Weighing 1.48g of KOH, filling into a conical flask, adding 65ml of methanol for ultrasonic dissolution, pouring into a dripping device, and starting dripping, wherein the dripping speed is high but the dripping can not form a trickle, and the dripping time is about 8 minutes. After the KOH was dropped, the solution precipitated but became clear soon, after about 1.5 hours the mixed solution precipitated again, after which heating and stirring was stopped for 30 minutes, and the product was waited for sedimentation. The supernatant after sedimentation was aspirated, 50ml of methanol was added and stirred, and then after sedimentation was completed, 50ml of methanol was added and stirred, and then centrifugation was prepared. The stirred product was aspirated and nanoparticles were isolated by high-speed centrifugation. Then adding a certain amount of ethanol, performing ultrasonic treatment in a laboratory for 30min, and performing strong ultrasonic treatment for 15min. The solution was calibrated and then diluted with ethanol to 1mg/mL for use.
(2) Clean slides were placed over a cuboid crucible, which was filled with 2ml pdms (without curing agent). The distance between the PDMS liquid and the slide surface was about 2cm. Then placing the sample into a muffle furnace, heating at 150deg.C for 2 hr at a heating rate of 10deg.C for min -1 A polydimethylsiloxane microparticle layer was obtained on the surface of the slide.
(3) A mixed solution of the zinc oxide dispersion (20 ml) prepared above, PDMS (1 ml) and a curing agent (0.1 ml) was subjected to ultrasonic treatment at room temperature with a power of 300W to uniformly disperse the components. The resulting dispersion was sprayed onto the polydimethylsiloxane micro-particle layer described above at a distance of 15cm from the slide glass using a spray gun under a pressure of 0.2MPa, and cured at 100 ℃ for 2 hours to obtain a superhydrophobic coating.
Comparative example 1
Clean slides were placed over a cuboid crucible, which was filled with 2ml pdms (without curing agent). P (P)The distance between the DMS liquid and the slide surface is about 2cm. Then placing the sample into a muffle furnace, heating at 150deg.C for 2 hr at a heating rate of 10deg.C for min -1 A polydimethylsiloxane microparticle layer was obtained on the surface of the slide.
Test example 1 contact angle test
A drop of water was placed on the coatings of example 1 and comparative example 1, and the image of the drop was recorded using a camera and analyzed in analysis software by fitting the contour of the drop to determine the contact angle of the drop on the surface of the coating.
The test results show that for the transparent superhydrophobic coating of example 1, the liquid drop presents a superhydrophobic state on the surface of the coating due to the existence of the micro-nano structure, the contact angle is 154±1°, while the transparent superhydrophobic coating of comparative example 1 presents only a microstructure and does not present a nanostructure, so that the transparent superhydrophobic coating presents only a hydrophobic state, and the contact angle is 102±1°.
Test example 2 light transmittance test
The ultraviolet-visible-near infrared spectrum of the coating was obtained by means of a UV-vis-NIR spectrophotometer (Cary 7000). The transmittance profile of the coating was tested using the normal transmission mode. Since the band range observed on the ground is about 0.295-2.5 μm, we choose a test band range of 0.25-2.5 μm when testing. The transmission test of a sample having a uniform angle of incidence of 0 degrees was directly performed with the coated stent at the time of the ordinary transmission test, and it was found from the test result that the transmittance of the coating of example 1 was maintained at 82%.
Test example 3 icing test
The coating is placed on a cooling table, the temperature of the cooling table is regulated to be minus 15 ℃, water drops are dripped on the surface of the coating, the water drops are frozen, a single phase inverter is used for recording images of the freezing process, the ice delay time is observed, and the observation shows that: the icing time of the water droplets on the surface of the transparent superhydrophobic coating of example 1 was 40-45s, and the icing time of the water droplets on the surface of the transparent superhydrophobic coating of comparative example 1 was 10-15s.
The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiment. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A transparent superhydrophobic deicing coating, wherein the deicing coating comprises a carrier and a superhydrophobic layer; the super-hydrophobic layer is positioned on the carrier and has a micro-nano structure formed by polydimethylsiloxane micro-particles and metal oxide nano-particles.
2. A transparent superhydrophobic deicing coating according to claim 1, wherein the carrier is a transparent material; preferably, the carrier is glass.
3. A transparent superhydrophobic deicing coating according to claim 1, wherein the polydimethylsiloxane microparticles have a particle size of 1-10 μιη.
Preferably, the metal oxide nanoparticles have a median particle diameter of 50nm to 500nm.
4. Transparent superhydrophobic deicing coating according to claim 1, wherein the metal oxide nanoparticles are, for example, zinc oxide (ZnO) or tin oxide (SnO).
Preferably, the mass ratio of the polydimethylsiloxane micro-particles to the metal oxide nano-particles is 1:5-30.
5. A transparent superhydrophobic deicing coating according to claim 1, wherein the micro-nano structures refer to micro-scale and/or nano-scale raised structures protruding from the carrier surface plane, the micro-scale and/or nano-scale raised structures being formed of polydimethylsiloxane micro-particles and metal oxide nanoparticles. Wherein, the micrometer scale is 1-10 micrometers; the nanoscale refers to a nanoscale of less than 1 micron, for example, 50nm to 500nm.
6. A transparent superhydrophobic deicing coating according to claim 1, wherein the contact angle of the transparent superhydrophobic deicing coating to water is greater than or equal to 150 °.
Preferably, the transparent superhydrophobic deicing coating has a transparent property, and the transmittance of the transparent superhydrophobic deicing coating under ultraviolet-visible-near infrared light is more than or equal to 82%.
7. A method of preparing a transparent superhydrophobic deicing coating as recited in any one of claims 1-6, the method comprising the steps of:
1) Adding polydimethylsiloxane into a sintering container, placing a carrier on the top of the sintering container, placing the sintering container filled with polydimethylsiloxane into a sintering device for sintering treatment, and obtaining a polydimethylsiloxane micron particle layer on the surface of the carrier;
2) And mixing the metal oxide nano particles, the polydimethylsiloxane and the curing agent to obtain a mixed solution, spraying the mixed solution on the surface of the polydimethylsiloxane micro-particle layer, curing, and obtaining the super-hydrophobic layer with the micro-nano structure and comprising the polydimethylsiloxane micro-particles and the metal oxide nano particles on the surface of the carrier.
8. The method according to claim 7, wherein in step 1), the polydimethylsiloxane added to the sintering vessel is in a liquid state, and the polydimethylsiloxane does not contain a curing agent.
Preferably, in the step 1), the temperature of the sintering treatment is 120-180 ℃, the time of the sintering treatment is 1-5 h, and the temperature rising rate of the sintering treatment is 5-15 ℃ for min -1 。
Preferably, in step 1), a clean glass slide is placed above a cuboid crucible, 2ml of polydimethylsiloxane (without curing agent) is filled in the crucible, and the distance between the polydimethylsiloxane and the surface of the glass slide is about 2cm; then the crucible with the glass slide is put into a muffle furnace and heated for 2 hours at 150 ℃ with the temperature rising rate of 10 ℃ for min -1 A polydimethylsiloxane microparticle layer was obtained on the surface of the slide.
Preferably, in the step 2), the spraying is performed by spraying the surface of the polydimethylsiloxane nano-particle layer at a distance of 15cm to 20cm from the glass slide by using a spray gun under a pressure of 0.2MPa to 0.5MPa.
Preferably, in the step 2), the curing temperature is 80-120 ℃, and the curing time is 1-5 h.
9. The transparent superhydrophobic deicing coating prepared by the method of claim 7 or 8.
10. Use of the transparent superhydrophobic deicing coating according to any one of claims 1-6, 9 in the field of deicing.
Preferably for deicing in the fields of telescope lenses, windows, windshields, electronic displays, solar cells, etc.
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| CN202310186219.4A CN116333592A (en) | 2023-03-01 | 2023-03-01 | Transparent super-hydrophobic deicing coating and preparation method and application thereof |
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| CN202310186219.4A CN116333592A (en) | 2023-03-01 | 2023-03-01 | Transparent super-hydrophobic deicing coating and preparation method and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117363211A (en) * | 2023-10-27 | 2024-01-09 | 重庆大学 | Large-area anti-icing and deicing coating with excellent durability and preparation method thereof |
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| CN106517821A (en) * | 2016-10-31 | 2017-03-22 | 陕西科技大学 | Transparent super-hydrophobic coating and preparation method thereof |
| CN115477885A (en) * | 2022-09-19 | 2022-12-16 | 中科融志国际科技(北京)有限公司 | Multifunctional anti-icing coating and fan blade |
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| CN106517821A (en) * | 2016-10-31 | 2017-03-22 | 陕西科技大学 | Transparent super-hydrophobic coating and preparation method thereof |
| CN115477885A (en) * | 2022-09-19 | 2022-12-16 | 中科融志国际科技(北京)有限公司 | Multifunctional anti-icing coating and fan blade |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117363211A (en) * | 2023-10-27 | 2024-01-09 | 重庆大学 | Large-area anti-icing and deicing coating with excellent durability and preparation method thereof |
| CN117363211B (en) * | 2023-10-27 | 2024-05-10 | 重庆大学 | Large-area anti-icing and deicing coating with excellent durability and preparation method thereof |
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