110 results about "Superhydrophobic coating" patented technology

The invention belongs to the technical field of super-hydrophobic coatings, and particularly relates to a thermochromic photo-thermal super-hydrophobic coating and a preparation method and application thereof. The thermochromic photo-thermal super-hydrophobic coating sequentially comprises a photo-thermal epoxy bottom layer, a thermochromic epoxy middle layer and a super-hydrophobic surface layer from bottom to top in the thickness direction. Wherein phase change microcapsules for packaging phase change materials are distributed in the photo-thermal epoxy bottom layer, and the surfaces of the phase change microcapsules are modified with polydopamine layers and MXene layers in a layer-by-layer self-assembly mode; thermochromic microcapsules are distributed in the thermochromic epoxy middle layer; the super-hydrophobic surface layer is of a micro / nano structure formed by a silane derivative. Through the multifunctional design of integrating photothermal conversion, phase change and thermochromism mechanisms, all-weather ice resistance / ice removal is achieved, the energy utilization efficiency is optimized through an intelligent temperature control mechanism, and a sustainable solution is provided for surface ice prevention in an extreme environment.

The invention relates to a melamine sponge with a chitosan-wheat straw biochar coating as well as a preparation method and application of the melamine sponge. The preparation method comprises the following steps: crushing wheat straws, and pyrolyzing under an anaerobic condition to obtain biochar; the biochar is soaked in a Prussian blue dispersion liquid for modification, and Prussian blue modified biochar is obtained; dispersing the material in a chitosan acetic acid solution for reaction to form a chitosan-charcoal composite system; adding PDMS (Polydimethylsiloxane) to carry out siloxane reaction to form stable composite sol; and finally, spraying the composite sol on the surface of the pretreated melamine sponge to form the super-hydrophobic coating. Through the synergistic effect of Prussian blue, chitosan and PDMS, the hydrophobicity and oil adsorption capacity of the material are remarkably improved, the water contact angle of the obtained sponge material can reach 168 degrees, the adsorption capacities to normal hexane and chloroform respectively reach 34 g / g and 80 g / g, and the sponge material has good cycle stability and wide application prospects in the fields of oil-water separation and environmental pollution treatment.

This invention discloses a method for preparing a fluorine-free superhydrophobic nano-silica cotton fabric, belonging to the field of superhydrophobic textile technology. The invention utilizes trichlorooctadecylsilane (OTS), γ-glycidyl etheroxypropyltrimethoxysilane (KH-560), and hexadecyltrimethoxysilane (HDTMS) to modify silica, obtaining a fluorine-free superhydrophobic coating. This coating, applied to the surface of the cotton fabric, results in a fabric with both low surface energy and a rough surface structure, exhibiting excellent superhydrophobic properties. Furthermore, it also imparts durability, self-cleaning, and stain-resistant capabilities to the hydrophobic coating.

The invention belongs to the technical field of nano materials and environment-friendly functional coatings, and discloses a preparation method and application of a lignin-based super-hydrophobic coating. The method comprises the steps that lignin is pretreated with ethylene carbonate to break steric hindrance and improve the grafting rate, then hexadecyl trimethoxy silane is added for grafting to form a hydrophobic chain, and surface energy is reduced; then adding silicon dioxide and N, N-dimethylformamide, carrying out ultrasonic dispersion to synergistically construct a micro-nano coarse structure, spraying the micro-nano coarse structure on a base material by using a spraying method, and putting the base material into a drying oven for curing, so as to obtain the lignin-based super-hydrophobic coating material. According to the method disclosed by the invention, a high-activity epoxy group is grafted on a lignin skeleton through ethylene carbonate pretreatment, so that steric hindrance in a three-dimensional space is broken, and dense anchor points are provided for a subsequent hydrophobic chain; then cocondensing with hexadecyl trimethoxy silane to form an alkyl-siloxane double network, and cooperating with nano silicon dioxide to construct micro-nano double roughness, so that a stable super-hydrophobic core under a fluorine-free condition is realized, and the technical route is simple and efficient.

The invention relates to a repairable super-hydrophobic coating with high mechanical stability and a preparation method and application thereof, and belongs to the technical field of coating materials. In order to solve the problems that a super-hydrophobic coating is poor in mechanical stability and lack of self-repairing capacity, the invention provides a repairable super-hydrophobic coating with high mechanical stability, and the repairable super-hydrophobic coating with high mechanical stability mainly comprises epoxy resin, tetrapod-like zinc oxide, nano aluminum oxide, nano silicon dioxide, micron-sized carbon nanotubes and micron-sized aramid fibers. The three-dimensional surface micro-nano structure with longitudinal gradient distribution is constructed by simulating the micro-nano structure of the leg of the water strider, and the repairable performance can be achieved by exposing the similar micro-nano structure on the bottom layer through abrasive paper polishing. A firm and stable network micro-nano structure is formed in the coating, and the coating has excellent mechanical stability and corrosion resistance. The coating spraying method disclosed by the invention supports large-area rapid construction, is compatible with various base material types, and has a wide application prospect in the fields of self-cleaning, icing resistance and the like.

This invention relates to a high-efficiency fog collector unaffected by fog flow direction and its manufacturing method. First, a superhydrophobic coating is formed on the surface of a copper sheet. Then, patterns are drawn on the copper sheet using a laser as punctuation marks. After electroplating, multiple superhydrophilic protrusions are formed. Finally, a uniquely shaped umbrella-like structure is formed through plastic stamping. The fog collector provided by this invention not only has high fog collection efficiency and adapts to any fog flow direction, but also uses abundant and readily available raw materials. Furthermore, the manufacturing process is simple, time-saving, and highly efficient, providing new ideas for the design of future high-efficiency fog collectors.

This invention relates to the field of superhydrophobic functional coating materials. The invention discloses a carbon-coated nano-silica photothermal superhydrophobic coating and its preparation method. The preparation method includes: preparing carbon-coated nano-silica particles via a hydrothermal method; mixing the particles with an adhesive and PDMS and spraying the mixture onto a substrate surface, followed by a first curing to form a base coating; then immersing the mixture in a solution containing perfluoroalkyl silanes, followed by a second curing to obtain the final coating. The coating of this invention exhibits a water contact angle exceeding 150° and a roll-off angle less than 10°. Under 1 solar intensity, the surface temperature can rise to over 60°C within 6 minutes. It possesses advantages such as high-efficiency photothermal conversion, superhydrophobicity and oleophobicity, synergistic passive anti-icing and active de-icing, and good mechanical stability. Furthermore, the process is simple and scalable, making it suitable for anti-icing and de-icing protection in fields such as power facilities, wind power generation, and aerospace.

This invention belongs to the field of waterborne coatings and discloses a filler-modified organosilicon waterborne polyurethane, its wear-resistant superhydrophobic coating, and its preparation method. The wear-resistant superhydrophobic coating is made by stirring waterborne polyurethane emulsion as the main raw material, adding hydrophobic modified organosilicon, nanofiller modifiers, and additives. This coating not only has excellent adhesion and wear resistance but also superhydrophobic properties. Specifically, the introduction of hydrophobic modified organosilicon improves the coating's adhesion strength to the substrate and its wear resistance; the introduced low surface energy -Si-O-Si segments improve the coating's hydrophobicity, giving it superhydrophobic properties; and different fillers impart good UV resistance and wear resistance to the coating.

The present invention belongs to the technical field of optical preparation. Disclosed are an apparatus and method for preparing a superhydrophobic coating on a closed metallic curved surface. The apparatus comprises a laser device, a conical concave reflecting mirror, a fixture, a position adjusting platform and a control unit, wherein the fixture is fixed on the position adjusting platform, and the laser device is arranged above the adjusting platform, both the laser device and the position adjusting platform being electrically connected to and controlled by the control unit; the conical concave reflecting mirror is arranged between the fixture and the laser device; the lower base of the conical concave reflecting mirror is sealed, a through hole being provided right in the middle of the lower base; and the laser device is configured to emit laser to the conical concave reflecting mirror, and the conical concave reflecting mirror is configured to reflect and focus the laser. By means of the cooperation of the conical concave reflecting mirror and the laser device, the laser performs rotational scanning around the surface of a closed-curved workpiece, thereby achieving rapid marking; in addition, by dynamically adjusting and controlling a laser scanning path, the preparation of a superhydrophobic coating with high precision, low cost and simple operation is achieved.

The present application relates to copper alloy preparation technical field, specifically to a kind of high-performance copper alloy for electronic material and preparation method thereof.The present application includes the following steps: preparation processing copper alloy material, preparation etching liquid, preparation biological base hydrophobic coating liquid and preparation high-performance copper alloy for electronic material.Cu-Al-Fe-Si alloy system is used to prepare processing copper alloy material in the present application, which not only prepares the substrate of copper alloy, but also makes the processing copper alloy material prepared in the subsequent etching by the synergistic design of material composition and organizational structure, so that the etching liquid can uniformly react on the surface of the processing copper alloy material, avoiding uneven etching caused by composition segregation, thereby improving the uniformity of coating when adhering.The surface of the copper alloy material obtained after etching finally has optimized physical roughness and chemical activity, so that the biological base coating can be firmly adhered to the surface of the copper alloy material after etching, thereby obtaining high-performance superhydrophobic coating.

The application discloses a kind of based on fluorine-free organic small molecule ultra-thin super-hydrophobic coating and preparation method thereof, specific steps are as follows: 20 portions-40 portions of amine compound, 20 portions-40 portions of epoxy compound and 20 portions-40 portions of solvent are mixed, and mixed solution is obtained.After substrate is soaked in mixed solution 1h-24h, pretreated substrate is obtained.1 portion-30 portions of olefin compound, 1 portion-25 portions of polydimethylsiloxane, 1 portion-25 portions of initiator, 1 portion-40 portions of mercapto compound, 1 portion-40 portions of solvent are mixed, and mixed coating is obtained.Mixed coating is evenly covered on the surface of pretreated substrate, and after standing 1h-7h, it is dried, and ultra-thin super-hydrophobic coating is obtained.The ultra-hydrophobic coating prepared by the method has excellent stability, durability, self-cleaning property and oil-water separation performance, and can be widely used for separating immiscible oil-water mixture.

The invention discloses a template curing agent for constructing a surface energy gradient, a preparation method of the template curing agent, a super-hydrophobic coating and a preparation method of the super-hydrophobic coating. According to the template curing agent, a cross-linking function and an interface guiding function are decoupled and coordinated through an elaborate molecular structure design, so that the maximization of the super-hydrophobic performance of the surface of a coating is realized with the minimum using amount of low-surface-energy substances. The template curing agent also has a specific topological structure and a chain segment, and can guide low-surface-energy substances to be directionally enriched to the surface in the coating curing process, so that the super-hydrophobic coating is efficiently constructed. The super-hydrophobic coating body network for constructing the surface energy gradient prepared by the invention is pure and compact, and the mechanical strength and adhesive force are obviously superior to those of a traditional blending system; and the gradient functional layer formed on the surface is uniform and stable and has excellent comprehensive performance.

This invention relates to a method for preparing a high-durability transparent cooling self-cleaning coating for the protection of stone cultural relics, comprising the following steps: (1) dispersing silica nanoparticles, titanium dioxide nanoparticles and zinc oxide nanoparticles in a mixed solution and ultrasonicating to obtain a mixed dispersion; (2) dispersing silica nanoparticles in the mixed solution and ultrasonicating to obtain a dispersion containing only silica nanoparticles; (3) adding silane coupling agent and hydrochloric acid to the mixed dispersion and silica dispersion respectively to obtain solution A and solution B; (4) adding water-diluted aqueous emulsion to solution B to obtain an adhesive layer solution for spraying; (5) ultrasonicating the adhesive layer solution and spraying it onto the sample, allowing it to cure naturally; (6) ultrasonicating solution A and continuing to spray it onto the sample; (7) drying the sprayed sample at room temperature to obtain a transparent superhydrophobic coating; the coating has high light transmittance and excellent hydrophobicity, oleophobicity and self-cleaning properties.

A fluorine-free transparent superhydrophobic coating, and a preparation method therefor and an application thereof are provided. In the preparation method, a three-dimensional network structure formed by self-assembly of a bisamide derivative (1,4-bis[(3,4-dioctyloxyphenyl)-bisamido]benzene, BPH-8) is used as a template; tetraethyl orthosilicate (TEOS) as a silica precursor is adsorbed on a surface of the template to undergo sol-gel polymerization to form silica with high transparency; then BPH-8 is removed by calcination to obtain a fibrous transparent silica surface; the silica surface is hydrophobically modified with octyltrichlorosilane to obtain a transparent superhydrophobic coating. The fluorine-free transparent superhydrophobic coating features a water contact angle of 162.7°, a sliding angle of less than 3°, and an average transmittance of visible light of 84.8%, and has good self-cleaning ability, and potential application value in the fields of architectural glass, automotive window glass, rearview mirrors, optical lenses, and solar photovoltaics.

The invention discloses a high-weather-resistance transparent super-hydrophobic coating and a preparation method thereof. The high-weather-resistance transparent super-hydrophobic coating is prepared from modified cashew phenolic resin, hydrogen-containing silicone oil and organic glass microspheres according to the mass ratio of (12-28): (2-5): (12-20). The modified cashew nut phenolic resin is prepared from cashew nut phenolic resin, an N-containing silane coupling agent and isocyanate in a mass ratio of (72-80): (24-31): (4-14); according to the high-weather-resistance transparent super-hydrophobic coating obtained by the preparation method, super-hydrophobicity and high light transmittance (the light transmittance is greater than or equal to 90%) are realized at the same time, and the weather resistance and the mechanical stability are remarkably improved. When applied to a photovoltaic panel, the photovoltaic module can improve the power generation efficiency and reduce the operation and maintenance cost; the sensor is applied to windshields, cameras, laser radar mirror surfaces and other equipment of new energy automobiles, the sensing reliability of the sensor can be enhanced, the visual field in rainy days can be improved, energy consumption is reduced by improving the efficiency of an air conditioner heat exchanger, and the endurance mileage is increased.

The invention relates to the technical field of super-hydrophobic coatings, and discloses a preparation method and application of a water-based anti-pollution coating. 40-70 parts by weight of an organosilicon triazine polymer, 100 parts by weight of a water-based epoxy resin emulsion, 10-30 parts by weight of nano-silica, 0.6-1 part by weight of an emulsifier, 32-40 parts by weight of a curing agent and the like are mixed and thermally cured to obtain the water-based anti-pollution coating. The water-based anti-pollution coating is obtained. The organic silicon triazine polymer and the epoxy resin are subjected to ring-opening curing reaction, and a heat-resistant phenyl siloxane structure and a phenyl triazine ring structure are bonded into a molecular chain of the epoxy resin, so that the heat resistance of the coating is improved. The organosilicone triazine polymer contains a plurality of long carbon chains with strong hydrophobicity and a phenyl siloxane structure, and is combined with the nano silicon dioxide, so that the coating is endowed with unique super-hydrophobic characteristic, strong anti-settling, waterproof and anti-pollution properties and excellent humidity and heat resistance.

The invention discloses a full-crosslinking layered fluorine-containing epoxy super-hydrophobic coating and a preparation method thereof, and belongs to the technical field of super-hydrophobic coatings. The coating comprises the following raw material components: epoxy resin, fluorine-containing epoxy acrylic resin, KH560 modified nano silicon dioxide, a curing agent, an accelerant and the like. The preparation method of the coating comprises the following steps: carrying out surface grafting modification on the nano silicon dioxide particles by using a KH560 siloxane coupling agent; the preparation method comprises the following steps: synthesizing fluorine-containing epoxy acrylate low-surface-energy resin by using tridecafluorooctyl methacrylate, glycidyl methacrylate and isobornyl methacrylate; the coating is prepared by adopting a step-by-step spraying method, the primer is epoxy resin, the surface wear-resistant super-hydrophobic layer is fluorine-containing epoxy acrylate low-surface-energy resin blended modified nano silicon dioxide particle filler, and the three components are integrally crosslinked through epoxy groups. According to the method, the adhesive force and durability of the coating can be improved, and the coating has good super-hydrophobic performance and is suitable for various working conditions.

The utility model discloses a preparation device of a super-hydrophobic coating for special lighting equipment in the technical field of preparation devices, which comprises a mounting frame, a processing bin is arranged in the mounting frame, a sliding plate is inserted into the inner wall of the processing bin in a sliding manner, and the preparation device further comprises a first driving unit, the first driving unit is used for driving the sliding plate to slide on the inner wall of the processing bin; a stirring rod is arranged below the sliding plate, and the second driving unit is used for driving the stirring rod to rotate and controlling the space height of the stirring rod. According to the clamping device, the two installation protrusions are arranged at the top of the installation frame, and the threaded rods are connected to the surfaces of the two installation protrusions in a threaded and inserted mode, so that when the clamping device is used, a user rotates the two threaded rods respectively to drive the two clamping discs to move. And the limiting blocks are attached to the two sides of the machining bin correspondingly, and stable limiting of the machining bin in the mounting frame can be achieved.

The invention provides fireproof particles and a preparation method and application thereof, and belongs to the technical field of carbon capture, utilization and storage and the technical field of fireproof materials. The fireproof particle sequentially comprises a composite inner core, a silicon dioxide layer, a super-hydrophobic coating and fins from inside to outside, wherein the composite inner core comprises a mixture of biochar, a mineral material, ammonium polyphosphate and pentacosane; the silicon dioxide layer is located on the surface of the composite core; the super-hydrophobic coating comprises C12-C18 straight chain alkyl trimethoxy silane which is bonded on the surface of the silicon dioxide layer; and the fins are adhered to the surface of the super-hydrophobic coating.

The application discloses a kind of wood fiber-based super-hydrophobic coating and preparation method thereof, belong to super-hydrophobic coating technical field.The preparation method of the application includes the following steps: after drying hot ground mechanical pulp is added in eutectic solvent and swells, then reaction is heated, after reaction is terminated, filter while hot, filter residue is washed with hot ethanol, then the filter residue is dispersed to nanoscale in ethanol mechanically, and is settled;Take the bottom settlement layer and spray to the substrate surface, then the mixed solution of polydimethylsiloxane and curing agent is sprayed to the substrate surface again, after drying, it is obtained.The application uses hot ground mechanical pulp as raw material, and the cost is low, and the requirement for equipment is low during preparation;The application realizes the construction of super-hydrophobic coating by two-step spraying method, and the production process is green and environmentally friendly, does not contain high-toxicity chemicals, and the preparation method is simple and easy to operate, and has practical application value.

The present invention relates to the technical field of disinfecting and purifying water reservoirs of blue and green algae. The composition for purifying blue and green algae from water, according to the present invention, comprises copper sulfate powder and a binder, i.e. a hydrophobic agent, including a hydrophobic agent melt as a binder, in the form of a high melting point triglyceride fraction, by adding the hydrophobic agent melt to the copper sulfate powder heated to a temperature of 60-70° to form a superhydrophobic coating with a contact angle of 155-165°, the composition ratio of the components being as follows: copper sulfate: 85-97 wt%, the hydrophobic agent melt in the form of a high melting point triglyceride fraction - the balance, then homogenized, incubated at a temperature of 65°C for no more than 5 minutes, cooled to room temperature, and the resulting mixture is ground to a dispersed state with a particle size of 50-250 microns.

This invention belongs to the field of surface treatment, specifically relating to a superhydrophobic coating and its preparation method. The preparation method of the hydrophobic coating includes: 1) dissolving zinc and aluminum nitrates in water to obtain solution A, dissolving NaNO3 and NaOH in water to obtain solution B, mixing solution A and solution B, heating, stirring evenly, and allowing to stand for aging to obtain a nitrate-intercalated zinc-aluminum layered bimetallic hydroxide; 2) mixing the nitrate-intercalated zinc-aluminum layered bimetallic hydroxide with Na2MoO4 to prepare a zinc-aluminum layered bimetallic hydroxide by anion exchange method; 3) hydrophobically modifying the zinc-aluminum layered bimetallic hydroxide to obtain a modified zinc-aluminum layered bimetallic hydroxide; 4) mixing the modified zinc-aluminum layered bimetallic hydroxide with polymer resin, diluent, and curing agent to obtain a superhydrophobic coating material, and curing to obtain a coating. The superhydrophobic coating provided by this invention has antifouling properties, anti-icing properties, and corrosion resistance.

The invention discloses a preparation method of a CsPbX3 quantum dot composite enhanced photo-thermal anti-icing / deicing super-hydrophobic coating, and belongs to the field of anti-icing coating preparation. The invention aims to solve the problems of low photo-thermal efficiency, poor wear resistance and complex preparation process of the traditional anti-icing material. The method comprises the steps of 1, pretreatment; 2, preparing a CsPbX3 quantum dot composite enhanced photo-thermal anti-icing / deicing super-hydrophobic coating solution; and 3, coating and curing. According to the invention, the huge specific surface area of ZnSn (OH) 6 is utilized, so that the ZnSn (OH) 6 and a matrix generate strong physical adsorption and interface interaction, external stress is effectively transferred and dispersed, and crack propagation caused by stress concentration is avoided; when the CsPbX3 quantum dot is used as a photo-thermal factor and is illuminated, valence band electrons can absorb energy and jump to a conduction band, and electron-hole pairs are formed; the electron-hole pairs can transfer energy to lattice vibration, release the energy in the form of heat energy and convert the energy into heat energy, so that the photothermal conversion efficiency is improved.

This invention provides a water-based self-cleaning superhydrophobic coating, its preparation method, and its application. The water-based self-cleaning superhydrophobic coating comprises the following components in parts by weight: 0.1-0.2 parts acrylic monomers, 5-15 parts acrylate monomers, 6-12 parts acryloyloxysilane coupling agent, 14-26 parts F-SiO2 particles, 0.1-5 parts additives, and 54-68 parts solvent; wherein the F-SiO2 particles are SiO2 modified with a fluorosilane coupling agent. The coating of this invention exhibits excellent superhydrophobic, oleophobic, chemically resistant, and self-cleaning properties. The static contact angle of the coating with water reaches over 165°, demonstrating outstanding superhydrophobic and self-cleaning properties, superior to most commercially available hydrophobic and oleophobic acrylic resins. Furthermore, this invention also offers advantages such as zero VOC emissions, non-flammability, safer transportation and storage, shorter drying time, and lower environmental requirements.

Methods for forming superhydrophobic coatings, articles including superhydrophobic coatings, and additive manufacturing systems for superhydrophobic coatings are provided. The method includes aerosolizing a solution includes a polymer and a solvent, thereby producing a mist including droplets of the solution entrained in a gas. The method includes directing the mist to a substrate. The mist traverses to the substrate over a flight time. The method includes decreasing a damping factor of the droplets within the mist during the flight time, thereby forming gel particles. The method includes contacting the gel particles with the substrate, thereby forming the superhydrophobic coating on the substrate. The superhydrophobic coating includes the gel particles.

The application relates to an MXene-based deicing super-hydrophobic coating, a coating layer and a preparation method and coating application, the coating comprising the following components in percentage by mass: 2-5% of super-hydrophobic modified MXene photothermal material, 2-5% of epoxy resin, 0.5-1.5% of an epoxy resin curing agent, 0.5-1.5% of PDMS, 0.05-0.15% of a PDMS curing agent and 80-90% of a diluent; wherein the super-hydrophobic modified MXene photothermal material is a MXene powder treated by fluorine-free long-chain silane; the application uses MXene with excellent light-heat conversion performance as a photothermal material, carries out low-surface-energy hydrophobic modification on the MXene material by using fluorine-free long-chain silane, avoids environmental pollution caused by perfluoro or polyfluoro organic compounds, integrates the advantages of the super-hydrophobic coating and the photothermal coating, and realizes passive ice prevention and active photothermal deicing of the MXene-based deicing super-hydrophobic coating.

The invention discloses a wear-resistant photo-thermal super-hydrophobic coating and a preparation method thereof.The preparation method comprises the steps that 1, after bamboo powder is subjected to alkali treatment and drying, high-temperature carbonization treatment is conducted under the hydrothermal condition, and carbonized bamboo powder is obtained; (2) dissolving gallic acid and cerous nitrate in an ethanol-water mixed solvent, carrying out a complexation reaction under a weakly alkaline condition to form a metal-polyphenol network precursor solution, and depositing the metal-polyphenol network precursor solution on the surface of the pretreated substrate under a hydrothermal condition to form a metal-polyphenol network layer; and (3) dispersing the carbonized bamboo powder and a fluorine-containing silane modifier in an organic solvent to prepare a hydrophobic modified dispersion liquid, spraying the hydrophobic modified dispersion liquid on the surface of the metal-polyphenol network layer, and performing drying and thermocuring treatment to obtain the wear-resistant photo-thermal super-hydrophobic coating.

The invention discloses a super-hydrophobic coating failure risk assessment model for a power transmission line, and the construction process of the model comprises the steps: 1, determining various influence parameters under a physical wear damage condition, and constructing a super-hydrophobic coating failure risk assessment model under the condition; 2, determining various influence parameters under chemical corrosion and aging conditions, and constructing a super-hydrophobic coating failure risk assessment model under the conditions; 3, performing normalization fusion on the failure assessment models under the two conditions in the step 1 and the step 2, and constructing a power transmission line super-hydrophobic coating failure risk assessment model under the comprehensive condition; and 4, according to the score value calculated by the power transmission line super-hydrophobic coating failure risk assessment model, determining the severity level of the super-hydrophobic coating failure risk. According to the risk assessment model, the failure risk of the super-hydrophobic coating on the line can be scientifically assessed, so that safe, healthy and stable operation of a power system is better guaranteed.

The invention discloses a multilayer stone-like ZnS / Zn-MOFs (at) SC super-hydrophobic coating and a preparation method and application thereof.The preparation method comprises the steps that absolute ethyl alcohol and deionized water are mixed, polyvinylpyrrolidone and 2-aminoterephthalic acid are added for ultrasonic treatment, zinc acetate is added for continuous ultrasonic treatment, thiourea is added, magnetic stirring is conducted, and a precursor solution is obtained; pouring the pretreated magnesium alloy into the precursor solution, sealing, performing hydrothermal reaction, alternately cleaning with deionized water and ethanol after the reaction is finished, and drying to obtain a ZnS / Zn-MOFs composite coating; stearic acid and chloramphenicol are co-dissolved in absolute ethyl alcohol for ultrasonic clarification, the ZnS / Zn-MOFs composite coating is vertically immersed in the mixed solution, and nitrogen is used for blow-drying; and repeatedly dipping and drying to obtain the multilayer stone-like ZnS / Zn-MOFs (at) SC super-hydrophobic coating. The ZnS inorganic framework endows the coating with high mechanical strength, the micro-nano double coarse structure of the Zn-MOFs and the stearic acid low surface energy layer have a synergistic effect, so that the surface has self-cleaning ability, liquid drops can take away dust when rolling down, and the coating is free of maintenance after long-term operation.

This invention provides a silicon-modified polyurea superhydrophobic coating material for reducing water resistance and promoting adhesion to ice and shellfish, and its preparation method. The coating material comprises, by weight, 35-50 parts of a fully urea-bonded prepolymer, 30-45 parts of a PDMS-modified monofunctional urea-based polymer brush, 8-15 parts of a latent curing agent, 5-10 parts of a superhydrophobic nanofiller, 5-10 parts of a colorant, and 2-6 parts of a plasticizer; wherein the latent curing agent is a commercially available latent curing agent; and the superhydrophobic nanofiller is one or a mixture of two of fumed silica and nano-titanium dioxide. The coating material provided by this invention has the characteristics of a large contact angle, low roll-off angle, low surface energy, high strength, high elongation, low water absorption, and environmental friendliness.