US20160152840A1 - Hydrophobic coating for coated article - Google Patents

Hydrophobic coating for coated article Download PDF

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US20160152840A1
US20160152840A1 US15/016,380 US201615016380A US2016152840A1 US 20160152840 A1 US20160152840 A1 US 20160152840A1 US 201615016380 A US201615016380 A US 201615016380A US 2016152840 A1 US2016152840 A1 US 2016152840A1
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particles
article
recited
silica
sio2
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Richard L. Smith
Joshua A. Sheffel
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RTX Corp
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United Technologies Corporation
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00Compositions of 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; Compositions of derivatives of such polymers
    • C08L83/04Polysiloxanes
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/16Antifouling paints; Underwater paints
    • C09D5/1656Antifouling paints; Underwater paints characterised by the film-forming substance
    • C09D5/1662Synthetic film-forming substance
    • C09D5/1675Polyorganosiloxane-containing compositions
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/02Elements
    • C08K3/04Carbon
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/02Elements
    • C08K3/08Metals
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D183/00Coating 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
    • C09D183/04Polysiloxanes
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/16Antifouling paints; Underwater paints
    • C09D5/1681Antifouling coatings characterised by surface structure, e.g. for roughness effect giving superhydrophobic coatings or Lotus effect
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/60Additives non-macromolecular
    • C09D7/61Additives non-macromolecular inorganic
    • C09D7/62Additives non-macromolecular inorganic modified by treatment with other compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/011Nanostructured additives
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/34Silicon-containing compounds
    • C08K3/36Silica
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00Use of pretreated ingredients
    • C08K9/04Ingredients treated with organic substances
    • C08K9/06Ingredients treated with organic substances with silicon-containing compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/25Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/254Polymeric or resinous material
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/25Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/259Silicic material

Definitions

  • This disclosure relates to anti-icing or icephobic coatings for reducing ice and water formation or accumulation on a surface.
  • the component may include an anti-icing or icephobic coating to reduce ice accumulation by reducing adhesion between the ice and the coating. In operation of the component, sheer loads from drag, wind, or other forces exceed the adhesive strength and shed the accumulated ice.
  • An article according to an example of the present disclosure includes a superhydrophobic body that has a matrix of at least one of silicone or polysiloxane, and non-silica (SiO2) particles dispersed through the matrix.
  • the non-silica (SiO2) particles include at least one of oxide particles, non-oxide ceramic particles, metal particles, polymer particles, carbon particles, metal hydroxide particles, or oxide-hydroxide particles.
  • the non-silica (SiO2) particles include at least one of the metal particles or the carbon particles.
  • the non-silica (SiO2) particles include at least one of the metal hydroxide particles or the oxide-hydroxide particles.
  • the non-silica (SiO2) particles include the oxide particles.
  • the non-silica (SiO2) particles include at least one of the metal particles or the non-oxide ceramic particles.
  • the non-silica (SiO2) particles include the non-oxide ceramic particles.
  • the non-silica (SiO2) particles include the polymer particles, and the polymer particles are polytetrafluorothylene particles.
  • the non-silica (SiO2) particles include at least two different kinds of particles with respect to composition.
  • one of the at least two different kinds of particles is microsphere particles.
  • one of the at least two different kinds of particles is hydrophobic particles and another of the at least two different kinds of particles is water durability particles.
  • the water durability particles increase water durability of the superhydrophobic coating with respect to ability to retain superhydrophobic surface properties over prolonged immersion in liquid water.
  • the non-silica (SiO2) particles include at least two different kinds of particles with respect to size.
  • the superhydrophobic body has a mass ratio of the two different kinds of particles that is between 0.3 and 2.
  • the non-silica (SiO2) particles have a surface roughness on the nanometer scale.
  • the superhydrophobic body consists essentially of the silicone or polysiloxane.
  • An article according to an example of the present disclosure includes a substrate and a superhydrophobic coating on the substrate.
  • the superhydrophobic coating includes a matrix of at least one of silicone or polysiloxane and particles dispersed through the matrix.
  • the particles include at least one of non-oxide ceramic particles, metal particles, or carbon particles.
  • the particles include the metal particles.
  • the particles include the non-oxide ceramic particles.
  • the particles include the carbon particles.
  • FIG. 1 illustrates an example coated article.
  • FIG. 2 illustrates another example coated article having at least two different kinds of hydrophobic particles.
  • FIG. 3 illustrates a graph of water (deionized) contact angle versus time immersed in water.
  • FIG. 4 illustrates another example coated article having a primer layer between a superhydrophobic coating and a substrate.
  • FIG. 1 illustrates selected portions of an example coated article 20 having anti-icing or icephobic properties.
  • the coated article 20 may be any type of component that would benefit from anti-icing.
  • the coated article 20 may be an aircraft component, aerospace component, heat exchanger component, wind turbine component or any other component where there is a desire to reduce or eliminate ice formation.
  • the coated article 20 generally includes a substrate 22 and a superhydrophobic coating 24 on the substrate 22 .
  • the term “superhydrophobic” and variations thereof refers to an advancing water contact angle that is greater than 140° and a receding water contact angle that is within 20% of the advancing water contact angle.
  • the superhydrophobic coating 24 is located on the surface of the substrate 22 exposed to the surrounding environment to protect the substrate 22 from ice formation.
  • the substrate 22 may comprise any material to which the superhydrophobic coating 24 may adhere, including metal alloys (e.g. alloys based on the metals aluminum, titanium, nickel, cobalt, iron, etc.), polymers, polymer blends, ceramics, glasses, and/or composites and combinations thereof.
  • the superhydrophobic coatings of the present disclosure are designed to shed water and thereby avoid ice formation.
  • the superhydrophobic coating 24 may be considered to be an anti-icing or icephobic coating and may reduce or inhibit ice accumulation on the substrate by retarding or preventing the nucleation or formation of ice.
  • the superhydrophobic coating 24 is designed to be compatible with or stable to intermittent or extended exposures at elevated temperatures (up to ⁇ 550° F.), such as might be encountered in certain aerospace components.
  • the superhydrophobic coating 24 is further designed to be simple to apply.
  • the superhydrophobic coating 24 is applied to the substrate 22 as a single layer in one deposition step (e.g. a single spray coating, flow coating, dip coating, etc. application), although certain attributes may also be attained through a multi-step or multi-layer application process.
  • one deposition step e.g. a single spray coating, flow coating, dip coating, etc. application
  • the superhydrophobic coating 24 is a composite of a silicone polymer 26 a (e.g., matrix) and hydrophobic particles 26 b (e.g., filler particles).
  • the silicone polymer 26 a may contain additives or processing aids, such as anti-foaming agents, pigments, dyes, stabilizers, and the like known to those practiced in the art.
  • the silicone polymer may be a silicone, fluorosilicone, polysiloxane, room temperature vulcanized silicone, or other type of silicone composition or combination thereof.
  • the particles 26 b are inherently hydrophobic or surface-functionalized with a hydrophobic agent that renders the particle surfaces hydrophobic and contribute to the superhydrophobic properties of the coating 24 .
  • the particles 26 b may be nanosized particles.
  • the particles 26 b are monodisperse nanosized silica, such as fumed amorphous silica (SiO2).
  • the particles 26 b may include combinations of different sized particles.
  • Other suitable nanosized particles may include crystalline and amorphous oxides, non-oxide ceramics, metals and metal alloys, polymers and polymer blends, carbons, and metal hydroxides and oxide-hydroxides (such as natural and synthetic clays, mica, and diatomaceous earth). If the particles 26 b are not inherently hydrophobic their surfaces may be rendered hydrophobic by surface functionalizing with an appropriate hydrophobic agent.
  • the hydrophobic agent may be any type of agent that suitably bonds to the surfaces of the particles 26 b and renders the particles hydrophobic.
  • the hydrophobic agent may be a functionalized silane coupling agent, polydimethylsiloxane, hexamethyldisilazane, octylsilane, dimethyldichlorosilane, or a combination thereof.
  • the composition of the superhydrophobic coating 24 may be characterized by a mass ratio of the silicone polymer 26 a to the hydrophobic particles 26 b.
  • the mass ratio is between 0.5 and 3, and in some examples 0.5-1.5.
  • the superhydrophobic coating 24 may include only the silicone polymer 26 a and the particles 26 b.
  • the use of nanosized hydrophobic particles 26 b in combination with the silicone polymer 26 a may render the coating 24 superhydrophobic. That is, the superhydrophobic coating 24 exhibits an advancing water contact angle that is greater than 140° and a receding water contact angle that is within 20% of the advancing water contact angle (i.e., a contact angle hysteresis that is less than 20%).
  • a user may determine the advancing and receding water contact angles with known equipment and testing techniques, such as the Wilhelmy plate method or using a contact angle goniometer.
  • FIG. 2 illustrates another example coated article 120 .
  • the coated article 120 includes a superhydrophobic coating 124 on the substrate 22 .
  • the superhydrophobic coating 124 includes a silicone polymer 126 a and particles 126 b, as described with regard to FIG. 1 .
  • the superhydrophobic coating 124 includes particles 128 . That is, the superhydrophobic coating 124 includes at least two different kinds of hydrophobic particles, the particles 126 b and the particles 128 .
  • the particles 126 b and the particles 128 may differ in composition, size, morphology, or other characteristic.
  • the particles 126 b may be nanosized hydrophobic particles, as described above, and the particles 128 may be microsized particles.
  • the microsized particles 128 may be polymeric, such as silicone or polytetrafluoroethylene particles, and have a surface roughness on the nanometer scale (0.1-500 nanometers).
  • the particles 128 cooperate with the particles 126 b and the silicone polymer 126 a to contribute to the superhydrophobic properties of the coating 124 .
  • the particles 128 reduce the need to use high amounts of the particles 126 b.
  • the superhydrophobic coating 124 can include generally less of the particles 126 b in comparison to a coating that does not include the particles 128 and maintain approximately the same or better hydrophobicity performance.
  • the superhydrophobic coating 124 includes a mass ratio of the silicone polymer 126 a to the particles 126 b that is 0.5-10 and a mass ratio of the microsized particles 128 to nanosized particles 126 b that is 0-10, such as 0.1-10.
  • the mass ratio of silicone polymer 126 a to particles 126 b is 4-6 and the mass ratio of particles 128 to particles 126 b is 0.3-2.
  • Using surface functionalized nanosized silica particles as the particles 126 b and microsized silicone particles as the particles 128 renders the coating 124 to be superhydrophobic.
  • the microsized particles may have a size of 1-100 micrometers, and in some examples 5-25 micrometers.
  • the nanosized silica particles may have a size of 1-200 nanometers, and in some examples 1-50 nanometers.
  • the microsized particles 128 may be regarded as a “roughening agent” to the silicone polymer 126 a to enhance the surface roughness of the superhydrophobic coating 124 and enhance hydrophobicity.
  • the microsized particles 128 may be a ceramic, metallic, polymeric, or composite material having hydrophobic properties and a surface roughness on the nanometer scale (0.1-500 nanometers). Particles 128 may be inherently hydrophobic or surface-functionalized with a hydrophobic agent. Further, microsized particles that are not hydrophobic may also be suitable in certain coating formulations, if the microsized particles are sufficiently coated or wetted by the silicone matrix of the coating.
  • Utilizing at least two different kinds of particles in the superhydrophobic coating 124 also enhances the water durability of the superhydrophobic coating 124 .
  • water durability is defined as the ability of the superhydrophobic coating 124 to retain superhydrophobic surface properties (i.e. advancing contact angle >140° with less than 20% contact angle hysteresis) over prolonged immersion in liquid water.
  • FIG. 3 illustrates a graph of water contact angle versus time immersed in water.
  • Sample 1 and sample 2 were prepared by depositing coatings of different compositions on substrates using a known dip coating technique and a suspension of silicone polymer (NUSIL R-2180) and nanosized silica particles (ALFA-AESAR), as described above, in methyl ethyl ketone.
  • Sample 1 additionally included microsized silicone particles (TOSPEARL 1110A polydimethylsiloxane microspheres) as described above.
  • the microsized silicone microspheres had an average size of approximately 11 micrometers and a relatively smooth surface morphology having a roughness on the nanometer scale.
  • Samples 1 and 2 were aged by immersing the coated substrates in deionized water at ambient temperature.
  • the graph line 230 represents a plot of the advancing water contact angle of sample 1 as a function of time immersed, and the graph line 232 represents a plot of the receding water contact angle of sample number 1.
  • Graph line 234 represents a plot of the advancing water contact angle of sample number 2 as a function of time immersed, and graph line 236 represents a plot of the receding water contact angle of sample number 2.
  • the receding contact angle 236 of sample 2 declined substantially as a function of time immersed in the water.
  • the receding contact angle 232 of sample 1 did not exhibit such a decline and suggests that the particles 128 , such as the microsized silicone particles in sample 1, enhance water durability of superhydrophobic coatings.
  • FIG. 4 illustrates another example coated article 220 that is similar to the coated article 20 of FIG. 1 but includes a primer layer 240 between the superhydrophobic coating 24 and the substrate 22 .
  • the primer layer 240 may be a metal-organic material that is adapted to bond to the superhydrophobic coating 24 and the material of the substrate 22 .

Abstract

An article includes a superhydrophobic body that has a matrix and non-silica (SiO2) particles dispersed through the matrix. The matrix includes at least one of silicone or polysiloxane. The non-silica (SiO2) particles include at least one of oxide particles, non-oxide ceramic particles, metal particles, polymer particles, carbon particles, metal hydroxide particles, or oxide-hydroxide particles.

Description

    CROSS-REFERENCE TO RELATED APPLICATION
  • The present is a continuation to U.S. Provisional patent application Ser. No. 12/874,677, filed Sep. 2, 2010.
  • BACKGROUND
  • This disclosure relates to anti-icing or icephobic coatings for reducing ice and water formation or accumulation on a surface.
  • Surfaces of aircraft, power generation (e.g. wind turbines and land-based gas turbines), and architectural components may collect moisture that can freeze and debit the performance of the component. The component may include an anti-icing or icephobic coating to reduce ice accumulation by reducing adhesion between the ice and the coating. In operation of the component, sheer loads from drag, wind, or other forces exceed the adhesive strength and shed the accumulated ice.
  • SUMMARY
  • An article according to an example of the present disclosure includes a superhydrophobic body that has a matrix of at least one of silicone or polysiloxane, and non-silica (SiO2) particles dispersed through the matrix. The non-silica (SiO2) particles include at least one of oxide particles, non-oxide ceramic particles, metal particles, polymer particles, carbon particles, metal hydroxide particles, or oxide-hydroxide particles.
  • In a further embodiment of any of the foregoing embodiments, the non-silica (SiO2) particles include at least one of the metal particles or the carbon particles.
  • In a further embodiment of any of the foregoing embodiments, the non-silica (SiO2) particles include at least one of the metal hydroxide particles or the oxide-hydroxide particles.
  • In a further embodiment of any of the foregoing embodiments, the non-silica (SiO2) particles include the oxide particles.
  • In a further embodiment of any of the foregoing embodiments, the non-silica (SiO2) particles include at least one of the metal particles or the non-oxide ceramic particles.
  • In a further embodiment of any of the foregoing embodiments, the non-silica (SiO2) particles include the non-oxide ceramic particles.
  • In a further embodiment of any of the foregoing embodiments, the non-silica (SiO2) particles include the polymer particles, and the polymer particles are polytetrafluorothylene particles.
  • In a further embodiment of any of the foregoing embodiments, the non-silica (SiO2) particles include at least two different kinds of particles with respect to composition.
  • In a further embodiment of any of the foregoing embodiments, one of the at least two different kinds of particles is microsphere particles.
  • In a further embodiment of any of the foregoing embodiments, one of the at least two different kinds of particles is hydrophobic particles and another of the at least two different kinds of particles is water durability particles. The water durability particles increase water durability of the superhydrophobic coating with respect to ability to retain superhydrophobic surface properties over prolonged immersion in liquid water.
  • In a further embodiment of any of the foregoing embodiments, the non-silica (SiO2) particles include at least two different kinds of particles with respect to size.
  • In a further embodiment of any of the foregoing embodiments, the superhydrophobic body has a mass ratio of the two different kinds of particles that is between 0.3 and 2.
  • In a further embodiment of any of the foregoing embodiments, the non-silica (SiO2) particles have a surface roughness on the nanometer scale.
  • In a further embodiment of any of the foregoing embodiments, the superhydrophobic body consists essentially of the silicone or polysiloxane.
  • An article according to an example of the present disclosure includes a substrate and a superhydrophobic coating on the substrate. The superhydrophobic coating includes a matrix of at least one of silicone or polysiloxane and particles dispersed through the matrix. The particles include at least one of non-oxide ceramic particles, metal particles, or carbon particles.
  • In a further embodiment of any of the foregoing embodiments, the particles include the metal particles.
  • In a further embodiment of any of the foregoing embodiments, the particles include the non-oxide ceramic particles.
  • In a further embodiment of any of the foregoing embodiments, the particles include the carbon particles.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • The various features and advantages of the disclosed examples will become apparent to those skilled in the art from the following detailed description. The drawings that accompany the detailed description can be briefly described as follows.
  • FIG. 1 illustrates an example coated article.
  • FIG. 2 illustrates another example coated article having at least two different kinds of hydrophobic particles.
  • FIG. 3 illustrates a graph of water (deionized) contact angle versus time immersed in water.
  • FIG. 4 illustrates another example coated article having a primer layer between a superhydrophobic coating and a substrate.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • FIG. 1 illustrates selected portions of an example coated article 20 having anti-icing or icephobic properties. It is to be understood that the coated article 20 may be any type of component that would benefit from anti-icing. For instance, the coated article 20 may be an aircraft component, aerospace component, heat exchanger component, wind turbine component or any other component where there is a desire to reduce or eliminate ice formation.
  • The coated article 20 generally includes a substrate 22 and a superhydrophobic coating 24 on the substrate 22. The term “superhydrophobic” and variations thereof refers to an advancing water contact angle that is greater than 140° and a receding water contact angle that is within 20% of the advancing water contact angle. In the illustrated embodiment, the superhydrophobic coating 24 is located on the surface of the substrate 22 exposed to the surrounding environment to protect the substrate 22 from ice formation. The substrate 22 may comprise any material to which the superhydrophobic coating 24 may adhere, including metal alloys (e.g. alloys based on the metals aluminum, titanium, nickel, cobalt, iron, etc.), polymers, polymer blends, ceramics, glasses, and/or composites and combinations thereof. In comparison to icephobic coatings that address anti-icing via reducing ice adhesion strength, the superhydrophobic coatings of the present disclosure are designed to shed water and thereby avoid ice formation. The superhydrophobic coating 24 may be considered to be an anti-icing or icephobic coating and may reduce or inhibit ice accumulation on the substrate by retarding or preventing the nucleation or formation of ice. The superhydrophobic coating 24 is designed to be compatible with or stable to intermittent or extended exposures at elevated temperatures (up to ˜550° F.), such as might be encountered in certain aerospace components. The superhydrophobic coating 24 is further designed to be simple to apply. In the simplest embodiment the superhydrophobic coating 24 is applied to the substrate 22 as a single layer in one deposition step (e.g. a single spray coating, flow coating, dip coating, etc. application), although certain attributes may also be attained through a multi-step or multi-layer application process.
  • The superhydrophobic coating 24 is a composite of a silicone polymer 26 a (e.g., matrix) and hydrophobic particles 26 b (e.g., filler particles). The silicone polymer 26 a may contain additives or processing aids, such as anti-foaming agents, pigments, dyes, stabilizers, and the like known to those practiced in the art. The silicone polymer may be a silicone, fluorosilicone, polysiloxane, room temperature vulcanized silicone, or other type of silicone composition or combination thereof. The particles 26 b are inherently hydrophobic or surface-functionalized with a hydrophobic agent that renders the particle surfaces hydrophobic and contribute to the superhydrophobic properties of the coating 24.
  • The particles 26 b may be nanosized particles. In one example, the particles 26 b are monodisperse nanosized silica, such as fumed amorphous silica (SiO2). Alternatively, the particles 26 b may include combinations of different sized particles. Other suitable nanosized particles may include crystalline and amorphous oxides, non-oxide ceramics, metals and metal alloys, polymers and polymer blends, carbons, and metal hydroxides and oxide-hydroxides (such as natural and synthetic clays, mica, and diatomaceous earth). If the particles 26 b are not inherently hydrophobic their surfaces may be rendered hydrophobic by surface functionalizing with an appropriate hydrophobic agent. The hydrophobic agent may be any type of agent that suitably bonds to the surfaces of the particles 26 b and renders the particles hydrophobic. For example, the hydrophobic agent may be a functionalized silane coupling agent, polydimethylsiloxane, hexamethyldisilazane, octylsilane, dimethyldichlorosilane, or a combination thereof.
  • The composition of the superhydrophobic coating 24 may be characterized by a mass ratio of the silicone polymer 26 a to the hydrophobic particles 26 b. In one example, the mass ratio is between 0.5 and 3, and in some examples 0.5-1.5. In a further example, the superhydrophobic coating 24 may include only the silicone polymer 26 a and the particles 26 b. The use of nanosized hydrophobic particles 26 b in combination with the silicone polymer 26 a may render the coating 24 superhydrophobic. That is, the superhydrophobic coating 24 exhibits an advancing water contact angle that is greater than 140° and a receding water contact angle that is within 20% of the advancing water contact angle (i.e., a contact angle hysteresis that is less than 20%). A user may determine the advancing and receding water contact angles with known equipment and testing techniques, such as the Wilhelmy plate method or using a contact angle goniometer.
  • FIG. 2 illustrates another example coated article 120. In this disclosure, like reference numerals designate like elements where appropriate, and reference numerals with the addition of one-hundred or multiples thereof designate modified elements that are understood to incorporate the same features and benefits of the corresponding original elements. In this case, the coated article 120 includes a superhydrophobic coating 124 on the substrate 22. The superhydrophobic coating 124 includes a silicone polymer 126 a and particles 126 b, as described with regard to FIG. 1. Additionally, the superhydrophobic coating 124 includes particles 128. That is, the superhydrophobic coating 124 includes at least two different kinds of hydrophobic particles, the particles 126 b and the particles 128. The particles 126 b and the particles 128 may differ in composition, size, morphology, or other characteristic.
  • In the illustrated example, the particles 126 b may be nanosized hydrophobic particles, as described above, and the particles 128 may be microsized particles. The microsized particles 128 may be polymeric, such as silicone or polytetrafluoroethylene particles, and have a surface roughness on the nanometer scale (0.1-500 nanometers). The particles 128 cooperate with the particles 126 b and the silicone polymer 126 a to contribute to the superhydrophobic properties of the coating 124. In this regard, the particles 128 reduce the need to use high amounts of the particles 126 b. Thus, the superhydrophobic coating 124 can include generally less of the particles 126 b in comparison to a coating that does not include the particles 128 and maintain approximately the same or better hydrophobicity performance.
  • In one example, the superhydrophobic coating 124 includes a mass ratio of the silicone polymer 126 a to the particles 126 b that is 0.5-10 and a mass ratio of the microsized particles 128 to nanosized particles 126 b that is 0-10, such as 0.1-10. In a more particular example, the mass ratio of silicone polymer 126 a to particles 126 b is 4-6 and the mass ratio of particles 128 to particles 126 b is 0.3-2. Using surface functionalized nanosized silica particles as the particles 126 b and microsized silicone particles as the particles 128 renders the coating 124 to be superhydrophobic.
  • The microsized particles may have a size of 1-100 micrometers, and in some examples 5-25 micrometers. The nanosized silica particles may have a size of 1-200 nanometers, and in some examples 1-50 nanometers. The microsized particles 128 may be regarded as a “roughening agent” to the silicone polymer 126 a to enhance the surface roughness of the superhydrophobic coating 124 and enhance hydrophobicity.
  • Alternatively, the microsized particles 128 may be a ceramic, metallic, polymeric, or composite material having hydrophobic properties and a surface roughness on the nanometer scale (0.1-500 nanometers). Particles 128 may be inherently hydrophobic or surface-functionalized with a hydrophobic agent. Further, microsized particles that are not hydrophobic may also be suitable in certain coating formulations, if the microsized particles are sufficiently coated or wetted by the silicone matrix of the coating.
  • Utilizing at least two different kinds of particles in the superhydrophobic coating 124 also enhances the water durability of the superhydrophobic coating 124. Herein, water durability is defined as the ability of the superhydrophobic coating 124 to retain superhydrophobic surface properties (i.e. advancing contact angle >140° with less than 20% contact angle hysteresis) over prolonged immersion in liquid water.
  • FIG. 3 illustrates a graph of water contact angle versus time immersed in water. Sample 1 and sample 2 were prepared by depositing coatings of different compositions on substrates using a known dip coating technique and a suspension of silicone polymer (NUSIL R-2180) and nanosized silica particles (ALFA-AESAR), as described above, in methyl ethyl ketone. Sample 1 additionally included microsized silicone particles (TOSPEARL 1110A polydimethylsiloxane microspheres) as described above. The microsized silicone microspheres had an average size of approximately 11 micrometers and a relatively smooth surface morphology having a roughness on the nanometer scale. Samples 1 and 2 were aged by immersing the coated substrates in deionized water at ambient temperature.
  • The graph line 230 represents a plot of the advancing water contact angle of sample 1 as a function of time immersed, and the graph line 232 represents a plot of the receding water contact angle of sample number 1. Graph line 234 represents a plot of the advancing water contact angle of sample number 2 as a function of time immersed, and graph line 236 represents a plot of the receding water contact angle of sample number 2. The receding contact angle 236 of sample 2 declined substantially as a function of time immersed in the water. The receding contact angle 232 of sample 1 did not exhibit such a decline and suggests that the particles 128, such as the microsized silicone particles in sample 1, enhance water durability of superhydrophobic coatings.
  • FIG. 4 illustrates another example coated article 220 that is similar to the coated article 20 of FIG. 1 but includes a primer layer 240 between the superhydrophobic coating 24 and the substrate 22. For instance, the primer layer 240 may be a metal-organic material that is adapted to bond to the superhydrophobic coating 24 and the material of the substrate 22.
  • Although a combination of features is shown in the illustrated examples, not all of them need to be combined to realize the benefits of various embodiments of this disclosure. In other words, a system designed according to an embodiment of this disclosure will not necessarily include all of the features shown in any one of the Figures or all of the portions schematically shown in the Figures. Moreover, selected features of one example embodiment may be combined with selected features of other example embodiments.
  • The preceding description is exemplary rather than limiting in nature. Variations and modifications to the disclosed examples may become apparent to those skilled in the art that do not necessarily depart from the essence of this disclosure. The scope of legal protection given to this disclosure can only be determined by studying the following claims.

Claims (18)

What is claimed is:
1. An article comprising:
a superhydrophobic body including,
a matrix of at least one of silicone or polysiloxane, and
non-silica (SiO2) particles dispersed through the matrix, wherein the non-silica (SiO2) particles include at least one of oxide particles, non-oxide ceramic particles, metal particles, polymer particles, carbon particles, metal hydroxide particles, or oxide-hydroxide particles.
2. The article as recited in claim 1, wherein the non-silica (SiO2) particles include at least one of the metal particles or the carbon particles.
3. The article as recited in claim 1, wherein the non-silica (SiO2) particles include at least one of the metal hydroxide particles or the oxide-hydroxide particles.
4. The article as recited in claim 1, wherein the non-silica (SiO2) particles include the oxide particles.
5. The article as recited in claim 1, wherein the non-silica (SiO2) particles include at least one of the metal particles or the non-oxide ceramic particles.
6. The article as recited in claim 1, wherein the non-silica (SiO2) particles include the non-oxide ceramic particles.
7. The article as recited in claim 1, wherein the non-silica (SiO2) particles include the polymer particles, and the polymer particles are polytetrafluorothylene particles.
8. The article as recited in claim 1, wherein the non-silica (SiO2) particles include at least two different kinds of particles with respect to composition.
9. The article as recited in claim 8, wherein one of the at least two different kinds of particles is microsphere particles.
10. The article as recited in claim 8, wherein one of the at least two different kinds of particles is hydrophobic particles and another of the at least two different kinds of particles is water durability particles, the water durability particles increasing water durability of the superhydrophobic coating with respect to ability to retain superhydrophobic surface properties over prolonged immersion in liquid water.
11. The article as recited in claim 1, wherein the non-silica (SiO2) particles include at least two different kinds of particles with respect to size.
12. The article as recited in claim 11, wherein the superhydrophobic body has a mass ratio of the two different kinds of particles that is between 0.3 and 2.
13. The article as recited in claim 1, wherein the non-silica (SiO2) particles have a surface roughness on the nanometer scale.
14. The article as recited in claim 1, wherein the superhydrophobic body consists essentially of the silicone or polysiloxane.
15. An article comprising:
a substrate; and
a superhydrophobic coating on the substrate, the superhydrophobic coating including,
a matrix of at least one of silicone or polysiloxane, and
particles dispersed through the matrix, wherein the particles include at least one of non-oxide ceramic particles, metal particles, or carbon particles.
16. The article as recited in claim 15, wherein the particles include the metal particles.
17. The article as recited in claim 15, wherein the particles include the non-oxide ceramic particles.
18. The article as recited in claim 15, wherein the particles include the carbon particles.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019112962A1 (en) * 2017-12-04 2019-06-13 Applied Materials, Inc. Anti-wetting coating
CN112210293A (en) * 2020-10-16 2021-01-12 佛山市思特四通科技有限公司 Hydrophobic and oleophobic coating composition and preparation method thereof
CN112536435A (en) * 2020-11-17 2021-03-23 中国航发北京航空材料研究院 Method for coating high-hydrophobic layer on surfaces of carbonyl iron powder particles
CN113956074A (en) * 2021-10-28 2022-01-21 江苏钧瓷科技有限公司 Preparation method for improving voltage resistance of PTC (positive temperature coefficient) ceramic

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9334404B2 (en) * 2007-05-17 2016-05-10 Ut-Battelle, Llc Method of making superhydrophobic/superoleophilic paints, epoxies, and composites
US10150875B2 (en) * 2012-09-28 2018-12-11 Ut-Battelle, Llc Superhydrophobic powder coatings
US9828521B2 (en) * 2012-09-28 2017-11-28 Ut-Battelle, Llc Durable superhydrophobic coatings
US9546280B2 (en) 2012-12-07 2017-01-17 Hrl Laboratories, Llc Structural coatings with dewetting and anti-icing properties, and coating precursors for fabricating same
US8961671B2 (en) * 2013-01-30 2015-02-24 Illinois Tool Works, Inc. Super hydrophobic and antistatic composition
WO2014126585A1 (en) * 2013-02-15 2014-08-21 Latitude 18, Inc. Inorganic phosphate ceramics and coatings
FR3006914B1 (en) * 2013-06-12 2016-10-14 Dassault Aviat COMPOSITE PIECE HAVING A LAYER COMPRISING A FUNCTIONAL POWDER AND A POLYMER BINDER AND METHOD OF MANUFACTURING THE SAME
RU2547754C2 (en) * 2013-08-16 2015-04-10 Игорь Леонидович Радченко Polymer powder composition for superhydrophobic coating and method of obtaining superhydrophobic coating
DE102014204075A1 (en) 2014-03-06 2015-09-10 MTU Aero Engines AG Anti - ice coating for compressor blades
EP3177394B1 (en) * 2014-08-07 2021-10-06 Raytheon Technologies Corporation Article with controllable wettability
US20170011820A1 (en) * 2015-07-10 2017-01-12 General Electric Company Insulated windings and methods of making thereof
US11168276B2 (en) * 2015-08-28 2021-11-09 Battelle Memorial Institute Reinforced composites with repellent and slippery properties
US10221321B2 (en) * 2015-08-28 2019-03-05 Battelle Memorial Institute Paintable hydrophobic and lubricant-infused surface coatings and processes for making and using same
EP3368618B1 (en) 2015-10-28 2020-11-25 3M Innovative Properties Company Articles subject to ice formation comprising a repellent surface
CN105219263B (en) * 2015-11-19 2018-05-11 国家电网公司 Extra high voltage line surface anti-icing paint
WO2017127500A1 (en) 2016-01-20 2017-07-27 Battelle Memorial Institute Stretchable hydrophobic materials and methods for making the same
EP3405166A1 (en) 2016-01-22 2018-11-28 Edgewell Personal Care Brands, LLC Hydrophobic topical compositions
US10907070B2 (en) * 2016-04-26 2021-02-02 3M Innovative Properties Company Articles subject to ice formation comprising a repellent surface comprising a siloxane material
EP3455134A4 (en) * 2016-05-09 2020-01-22 Eric Loth Methods and systems for self-lubricating icephobic elastomer coatings
CN113604095B (en) * 2021-06-29 2022-06-24 东南大学 Porous powder loaded with super-hydrophobic particles and preparation method and application thereof
CN113930129B (en) * 2021-11-04 2022-11-15 武汉理工大学 Nano coating, heat exchanger and coating method

Family Cites Families (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3579540A (en) 1968-11-01 1971-05-18 Howard G Ohlhausen Method for protecting nonporous substrates and for rendering them water repellent
JPS51391A (en) 1974-06-19 1976-01-06 Tooru Ishikawa TOMEIBANNOSHOKONKENSHUTSUSOCHI
US3986997A (en) 1974-06-25 1976-10-19 Dow Corning Corporation Pigment-free coating compositions
US4151327A (en) 1978-02-24 1979-04-24 Lawton William R Complex amine/silane treated cellulosic materials
JPS593170A (en) 1982-06-28 1984-01-09 Matsushita Electric Ind Co Ltd Semiconductor ignition device
FR2635319B1 (en) 1988-07-20 1992-07-24 Saint Gobain Vitrage GLAZING WITH AN ANTI-FROST LAYER
JPH0623311B2 (en) 1989-01-26 1994-03-30 信越化学工業株式会社 Film-forming agent
FR2649115B1 (en) 1989-06-29 1994-10-28 Rhone Poulenc Chimie AQUEOUS DISPERSION BASED ON SILICON OILS AND ORGANIC (CO) POLYMER CROSSLINKING TO AN ELASTOMER BY REMOVAL OF WATER
EP0430156B1 (en) 1989-11-27 1995-02-01 Toshiba Silicone Co., Ltd. Coating composition, coated inorganic hardened product, and process for producing the product
US5523161A (en) 1990-04-03 1996-06-04 Ppg Industries, Inc. Water repellent surface treatment with integrated primer
US4983459A (en) 1990-04-03 1991-01-08 Ppg Industries, Inc. Chemically reacted glass surface
US5328768A (en) 1990-04-03 1994-07-12 Ppg Industries, Inc. Durable water repellant glass surface
US6025025A (en) 1990-04-03 2000-02-15 Ppg Industries Ohio, Inc. Water-repellent surface treatment
US5523162A (en) 1990-04-03 1996-06-04 Ppg Industries, Inc. Water repellent surface treatment for plastic and coated plastic substrates
US4997684A (en) 1990-07-19 1991-03-05 Ppg Industries, Inc. Method of using perfluoroalkylsilanes to lower the surface energy of glass
CA2059733C (en) 1991-01-23 1999-10-05 Kazufumi Ogawa Water- and oil-repelling film and method of manufacturing the same
JPH051391A (en) 1991-06-21 1993-01-08 Toagosei Chem Ind Co Ltd Composition for metal surface treatment and its production
EP0672779A3 (en) 1991-07-26 1996-08-28 Matsushita Electric Ind Co Ltd Method of making a surface of a substrate water- and oilrepellent.
JP3197918B2 (en) 1991-10-02 2001-08-13 三菱レイヨン株式会社 Coating composition and surface modification method of synthetic resin molded article
JP3360846B2 (en) 1992-09-10 2003-01-07 富士シリシア化学株式会社 Silica sol for forming hydrophobic silica, hydrophobic silica coating and hydrophobic silica powder
US5747561A (en) * 1992-10-14 1998-05-05 Smirnov; Aleksandr Vitalievich Solid surface modifier
US5449712A (en) 1993-01-13 1995-09-12 Thoro System Products, Inc. Organosilicon emulsions for rendering porous substrates water repellent
US5425804A (en) 1993-11-23 1995-06-20 Taiho Industries Co., Ltd. Water-repellent glazing agent
FR2722493B1 (en) 1994-07-13 1996-09-06 Saint Gobain Vitrage MULTI-LAYERED HYDROPHOBIC GLAZING
US5840800A (en) 1995-11-02 1998-11-24 Dow Corning Corporation Crosslinked emulsions of pre-formed silicon modified organic polymers
FR2746811B1 (en) 1996-04-02 1998-04-30 Saint Gobain Vitrage COMPOSITION FOR A NON-MOISTABLE COATING, PROCESS FOR TREATING GLAZE USING THE COMPOSITION AND PRODUCTS OBTAINED
JP2751920B2 (en) 1996-06-21 1998-05-18 日本電気株式会社 Method and apparatus for synchronously acquiring spread spectrum signal
US6001485A (en) 1996-11-18 1999-12-14 Nippon Sheet Glass Co., Ltd. Water repellant glass plate and method for manufacturing the same
US20020155299A1 (en) 1997-03-14 2002-10-24 Harris Caroline S. Photo-induced hydrophilic article and method of making same
US5904988A (en) 1997-05-27 1999-05-18 General Electric Company Sprayable, condensation curable silicone foul release coatings and articles coated therewith
US5889086A (en) 1997-06-23 1999-03-30 Taiho Industries Co., Ltd. Water repellent for automobile window glass
FR2769318B1 (en) 1997-10-06 1999-12-10 Saint Gobain Vitrage HYDROPHOBIC COATING, ESPECIALLY FOR GLAZING
US6099971A (en) 1998-09-09 2000-08-08 Plaskolite, Inc. Polysiloxane abrasion and static resistant coating
AUPQ234599A0 (en) 1999-08-20 1999-09-16 Lamb, Robert Norman Hydrophobic material
US20070241303A1 (en) * 1999-08-31 2007-10-18 General Electric Company Thermally conductive composition and method for preparing the same
DE10044216A1 (en) 2000-09-07 2002-05-02 Fraunhofer Ges Forschung Coating material for multifunctional, superphobic layers
US6890987B2 (en) 2000-10-18 2005-05-10 Nanofilm, Ltd. Product for vapor deposition of films of amphiphilic molecules or polymers
AU2003901735A0 (en) 2003-04-11 2003-05-01 Unisearch Limited Durable superhydrophobic coating
AU2003901734A0 (en) 2003-04-11 2003-05-01 Unisearch Limited Transparent superhydrophobic coating
US7344783B2 (en) 2003-07-09 2008-03-18 Shell Oil Company Durable hydrophobic surface coatings using silicone resins
WO2005068400A1 (en) 2004-01-15 2005-07-28 Newsouth Innovations Pty Limited Hydrophobic coating composition
DE102004062742A1 (en) 2004-12-27 2006-07-06 Degussa Ag Textile substrates with self-cleaning properties (lotus effect)
GB2421727B (en) 2004-12-30 2007-11-14 Ind Tech Res Inst Method for forming coating material and the material formed thereby
JP4855781B2 (en) 2005-02-01 2012-01-18 日東電工株式会社 Antireflection hard coat film, optical element and image display device
EP1726609A1 (en) 2005-05-25 2006-11-29 DSM IP Assets B.V. Hydrophobic coating
WO2007052260A2 (en) * 2005-10-31 2007-05-10 Shenkar College Of Engineering And Design Use of poss nanostructured molecules for hydrophobic and self cleaning coatings
US7630749B2 (en) 2005-11-07 2009-12-08 Gore Enterprise Holdings, Inc. Implantable electrophysiology lead body
US20080221263A1 (en) 2006-08-31 2008-09-11 Subbareddy Kanagasabapathy Coating compositions for producing transparent super-hydrophobic surfaces
US20070254170A1 (en) 2006-04-28 2007-11-01 Hoover Kelly L Erosion resistant anti-icing coatings
US8354160B2 (en) * 2006-06-23 2013-01-15 3M Innovative Properties Company Articles having durable hydrophobic surfaces
ATE526376T1 (en) * 2006-08-02 2011-10-15 Battelle Memorial Institute ELECTRICALLY CONDUCTIVE COATING COMPOSITION
US8202614B2 (en) 2006-08-09 2012-06-19 Luna Innovations Incorporated Additive particles having superhydrophobic characteristics and coatings and methods of making and using the same
WO2009018327A2 (en) * 2007-07-30 2009-02-05 Soane Labs, Llc Ultraphobic compositions and methods of use
US20090136741A1 (en) 2007-11-28 2009-05-28 Toyota Motor Engineering & Manufacturing North America, Inc. Nanoscopically modified superhydrophobic coating
GB0806443D0 (en) 2008-04-09 2008-05-14 Ucl Business Plc polymer films
JP2009263459A (en) * 2008-04-23 2009-11-12 Taimu Assoc:Kk Coating composition hardly allowing icing and allowing easy deicing, coating method, and evaluation method thereof
EP2130878B1 (en) 2008-06-05 2011-04-20 iGUZZINI ILLUMINAZIONE S.p.A. Double layer coating, its preparation and its use for rendering ultra water-repellent and antireflective the surfaces to which it is applied
US20100004373A1 (en) 2008-07-02 2010-01-07 Jingxu Zhu Compositions and processes for producing durable hydrophobic and/or olephobic surfaces
TW201006341A (en) 2008-07-22 2010-02-01 Kye Systems Corp Housing structure with telescopic joint
US9108880B2 (en) 2008-08-18 2015-08-18 The Regents Of The University Of California Nanostructured superhydrophobic, superoleophobic and/or superomniphobic coatings, methods for fabrication, and applications thereof
WO2010042668A1 (en) 2008-10-07 2010-04-15 Ross Technology Corporation Spill resistant surfaces having hydrophobic and oleophobic borders
JP5093170B2 (en) 2009-03-25 2012-12-05 住友金属工業株式会社 Erhard's drilling method and core for Erhard's drilling
JP5001391B2 (en) 2010-03-09 2012-08-15 三星ダイヤモンド工業株式会社 Dust collector for scribe head

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019112962A1 (en) * 2017-12-04 2019-06-13 Applied Materials, Inc. Anti-wetting coating
TWI687508B (en) * 2017-12-04 2020-03-11 美商應用材料股份有限公司 Anti-wetting coating
CN112210293A (en) * 2020-10-16 2021-01-12 佛山市思特四通科技有限公司 Hydrophobic and oleophobic coating composition and preparation method thereof
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CN113956074A (en) * 2021-10-28 2022-01-21 江苏钧瓷科技有限公司 Preparation method for improving voltage resistance of PTC (positive temperature coefficient) ceramic

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