32 results about "Superhydrophobic coating" patented technology

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 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 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 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.

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.

This invention belongs to the field of coatings, and particularly relates to a durable superhydrophobic nano-coating and its preparation method. The raw material composition of the durable superhydrophobic nano-coating includes, by weight: 5-50 parts ethylenediaminetetraacetic acid, 0.1-50 parts hydrophilic nano-silica dispersion, 10-50 parts anhydrous ethanol, 10-50 parts monohydric alcohol, 0.1-20 parts perfluoroorganosilane, and 0.1-5 parts catalyst. This invention solves the problems of cumbersome preparation processes, long reaction times, and harsh curing conditions in existing superhydrophobic coatings, achieving excellent superhydrophobic effects on substrates such as fabrics through simple spraying.

The present application provides a kind of reactive hydrophobic silica nanoparticles and its application in coating composition, coating. By introducing reactive hydrophobic silane modified compound coated silica nanoparticles into epoxy resin, the coating has excellent hydrophobic ability and very low ice adhesion strength. The reactive group on the surface of silica nanoparticles is beneficial to improve the binding force of epoxy resin and nanoparticles in the coating, so that the superhydrophobic coating has a super-high hydrophobic angle, and water droplets are difficult to stay on the surface for a long time and freeze into ice. Even if some water droplets form ice at very low temperature, the ice adhesion strength of the ice is only 2.42 kPa, and it is very easy to fall off under the action of a small shear force. The superhydrophobic coating is suitable for application in the anti-icing of equipment and facility component surface, by improving the water contact angle of water droplets on the surface of the object to reduce the contact area with the surface and improve the ice self-detaching property after icing, thereby solving the problem of equipment and facility operation failure or efficiency reduction caused by icing.

This invention discloses a corrosion-resistant superhydrophobic coating and its preparation method, belonging to the field of coating technology. This invention combines octadecylamine-modified epoxy phenolic resin with acrylic resin, which enhances the hydrophobicity and flexibility of the base resin and helps improve the uniformity, density, and adhesion of crosslinking, thereby reducing the risk of coating cracking and improving the coating's barrier performance against corrosive media. Furthermore, the hydrophobic silica, flake-shaped barrier filler, and corrosion-resistant reinforcing agent are all modified with silane coupling agents, resulting in better overall compatibility and dispersion stability of the coating, helping to reduce interface defects, ensure the integrity of the coating's crosslinking network, and synergistically improve the coating's corrosion resistance.

This invention discloses a glass slide for preventing cross-infection and its preparation method, relating to the field of glass slide technology. The preparation method includes the following steps: S1: Pre-treating a porous glass slide using plasma technology to obtain a pre-treated porous glass slide; S2: Mixing hydrophobic silica sol, hydrogen-containing silicone oil, vinyltriethoxysilane, platinum catalyst, inhibitor, and isopropanol evenly to obtain a superhydrophobic coating; S3: Mixing hydrophilic silica sol, polyethylene glycol, and isopropanol evenly to obtain a hydrophilic coating; S4: (1) Coating the superhydrophobic coating onto the outer area of ​​the pores of the pre-treated porous glass slide and drying it to form a hydrophobic layer; (2) Coating the hydrophilic coating onto the inner area of ​​the pores of the pre-treated porous glass slide and drying it to form a hydrophilic layer, thereby obtaining a glass slide for preventing cross-infection.

This invention relates to a superhydrophobic coating with anti-corrosion and anti-icing properties, its preparation method, and its application, belonging to the field of protective coating technology. The coating preparation method includes: dispersing metal oxide nanoparticle powder in a blend solution containing hydrochloric acid and o-methoxyaniline monomer, stirring and reacting in an ice-water bath, then slowly adding an ammonium persulfate aqueous solution, continuing the stirring reaction to obtain a hydrochloric acid-doped POA / NPs composite material; dispersing it in an ammonia aqueous solution, stirring and reacting at room temperature to obtain a dedoped powder; blending it with epoxy resin and polydimethylsiloxane in a blend solvent of anhydrous ethanol and N-methylpyrrolidone, adding fatty acids, heating and stirring in a water bath, and then uniformly spraying it onto a substrate to obtain the coating. The coating obtained by this invention is a superhydrophobic coating with excellent anti-corrosion and anti-icing properties, and can be used for comprehensive protection of marine engineering and wind power generation equipment.

The application discloses a preparation method and application of a self-repairing super-hydrophobic coating based on a ZB@BN / SiO2 double-layer structure, and the preparation method comprises the following steps: uniformly mixing ZB@BN composite particles and double-component polyurethane resin in a solvent, and coating on a substrate surface; uniformly mixing micron-grade coupling agent modified SiO2 particles and double-component polyurethane resin in a solvent, and coating on a hydrophilic bottom layer; uniformly mixing nano-grade coupling agent modified SiO2 particles and double-component polyurethane resin in a solvent, and coating on a micron coarse structure layer after semi-curing of the micron coarse structure layer, so that the double-layer structure self-repairing super-hydrophobic coating is obtained after solidification. The innovative double-layer structure combines the rapid active repair of the bottom layer with the long-term passive barrier of the top layer, the top super-hydrophobic layer provides excellent physical barrier and drag reduction functions, the 'labyrinth effect' of the BN nanosheet of the bottom layer prolongs the corrosion path, ZIF-8@BTA provides corrosion protection, and the two cooperate to endow the coating with excellent long-term corrosion resistance, self-repairing and drag reduction performance.

The invention provides a super-hydrophobic coating with antifriction and anti-scaling functions and a preparation method and application thereof, and relates to the technical field of metal material surface modification. The coating comprises an epoxy resin layer, an antifriction microcapsule layer, an anti-scale microsphere layer and a super-hydrophobic coating from inside to outside, the antifriction microcapsule layer comprises an epoxy resin matrix and silicon dioxide microcapsules which are uniformly distributed in the epoxy resin matrix and are filled with simethicone, the anti-scale microsphere layer comprises an epoxy resin matrix and polyethylene glycol microspheres which are uniformly distributed in the epoxy resin matrix and are loaded with 2-phosphonobutane-1, 2, 4-tricarboxylic acid, and the super-hydrophobic coating is a polytetrafluoroethylene layer. When the polytetrafluoroethylene layer is damaged, the silicon dioxide microcapsules are damaged and release contents, and the dimethyl silicone oil effectively reduces friction borne by the coating; meanwhile, the polyethylene glycol microspheres are slowly dissolved in a water environment, PBTCA is released, and synergistic scale prevention is achieved with the super-hydrophobic surface.

The application discloses a preparation method of a fluorine-free super-hydrophobic coating. The application uses stearic acid modified zinc oxide nano powder (ZnO@STA) and hexadecyl trimethoxysilane modified titanium dioxide nano powder (TiO2@HDTMS) as raw materials to prepare a stable fluorine-free composite super-hydrophobic material. The modified nano powder with different particle sizes is used to cooperate with each other, so that the coating can have higher surface roughness, the static contact angle is up to 156.7°, the rolling angle is as low as 3.6°, and the freezing time of the liquid drops on the coating surface can be greatly delayed.

This invention relates to the field of photothermal anti-icing and de-icing technology, and discloses a tellurium nanowire / modified diatomaceous earth composite photothermal superhydrophobic anti-icing coating, its preparation method, and its application. The method includes: (1) mixing diatomaceous earth, an alkali-alcohol mixture, water, a fluorinated modifier, and an alkyl orthosilicate, stirring, then allowing it to stand and undergo solid-liquid separation to obtain fluorinated diatomaceous earth powder; (2) mixing tellurium nanowires, fluorinated diatomaceous earth powder, and an epoxy resin-containing solution, stirring to obtain an anti-icing and de-icing coating system, spraying the anti-icing and de-icing coating system onto the surface of a substrate, and curing. This solution disperses tellurium nanowires and perfluorinated diatomaceous earth in epoxy resin to form a composite photothermal superhydrophobic coating composed of tellurium nanowires, modified diatomaceous earth, and epoxy resin. The combined structural features and functional advantages of this coating give it significant application potential in the fields of anti-icing and de-icing.

This invention discloses a superhydrophobic coating, its preparation method, and its application in air preheaters. The preparation method includes: forming a silica gel layer on a substrate surface, heat treatment, amination treatment, and modification treatment. The superhydrophobic coating prepared by this invention has advantages such as high bonding strength with the air preheater and good hydrophobic properties. It can effectively prevent ammonium bisulfate deposition at the cold end of the air preheater, with the contact time between the superhydrophobic coating surface and the ammonium bisulfate solution reduced by 80%. Furthermore, it can maintain the stability of the air preheater for a long time in high-temperature environments. It can be widely used for cold-end corrosion protection of air preheaters, not only improving the service life of the air preheater but also ensuring the long-term stable operation of the boiler. It has high practical value and promising application prospects. The preparation method of the superhydrophobic coating of this invention also has the advantages of simple process, convenient operation, low preparation cost, and high preparation efficiency, making it suitable for large-scale preparation and facilitating the industrial application of the superhydrophobic coating.

This invention belongs to the field of functional coating materials technology, specifically relating to a photothermal self-healing superhydrophobic coating, its preparation method, and its application. The invention employs a multi-layer synergistic design: the bottom layer is a primer layer; the middle layer is a photothermal self-healing functional layer containing mesoporous polydopamine photothermal microcapsules loaded with a low surface energy repair agent, silicone resin, and a curing agent; the top layer is a superhydrophobic layer containing modified two-dimensional nanosheets with hydrophobic properties and a high aspect ratio, silicone resin, and a curing agent. The modified two-dimensional nanosheets form a stable, loosely packed micro / nano structure. This synergistic system achieves full-cycle closed protection through low-temperature passive anti-icing, photothermal active de-icing, and photothermal triggered repair.

This invention discloses a method for preparing a fluorine-free superhydrophobic self-cleaning coating, belonging to the field of functional coating materials technology. It aims to address the environmental shortcomings of existing fluorine-containing superhydrophobic coatings and the deficiencies of fluorine-free systems in terms of poor mechanical durability and reliance on thermally driven self-healing. This invention designs and synthesizes a PDMS-(HxA / TyrBn) oligomer with bis(3-aminopropyl)-terminated PDMS as the main chain. Adipic acid monohydroxyxamic acid and N-Boc-O-benzyl-L-tyrosine functional side groups are covalently grafted to both ends via an amidation reaction. A two-liquid, two-step spraying process is used to complete the coating preparation. The resulting coating exhibits superhydrophobicity, excellent mechanical durability, self-healing ability, and self-cleaning properties, making it suitable for polyester coated fabrics, nylon coated fabrics, or PVC-coated fabrics.

The application relates to the technical field of super-hydrophobic coating, and discloses a transparent super-hydrophobic coating and a preparation method thereof. The method comprises the following steps: S1, coating an organic coating on a glass surface; S2, etching grooves on the coating by using an etching process until the glass base material at the bottom is exposed; S3, coating a silicon oxide sol on the surface, and after a heat treatment process, the organic coating is decomposed and disappears, so that silicon oxide protrusions are formed at the original organic coating groove; S4, removing the excess silicon oxide on the glass surface treated in the step S3 by using a desolvent flushing method, and then drying the glass surface; and S5, after spraying a hydrophobic silicon oxide nanoparticle dispersion liquid on the glass surface, drying is carried out to obtain the required transparent super-hydrophobic coating. Compared with the prior art, the transparent super-hydrophobic coating can realize the adjustment of the haze of the coating, the transparency, the stability and the super-hydrophobicity at the same time, so that the coating can be applied for a longer time, and the maintenance cost is reduced.

This invention discloses a coating spraying device for wind turbine blades, comprising a spray nozzle, a coating storage tank, a coating delivery main pipe, and several spraying mechanisms. The spray nozzles are radially distributed on the blade. The coating storage tank is disposed within the blade hub and is used to store the hydrophobic coating to be sprayed. The coating delivery main pipe is longitudinally inserted into the blade cavity and is used to transport the hydrophobic coating from the coating storage tank along the radial direction of the blade. The several spraying mechanisms are radially spaced and installed within the blade cavity, connected to the corresponding coating delivery main pipes via coating docking mechanisms. Each spraying mechanism is a telescopic spraying mechanism that extends through the spray nozzles on the blade to apply the waterproof coating to the outer surface of the blade. This invention enables the online spraying of waterproof coating onto the blade surface, forming a superhydrophobic coating that prevents water droplet accumulation on the blade surface and effectively prevents water droplets from freezing on the blade surface.

The application discloses a kind of based on bionic lotus-honeycomb structure finned tube heat exchanger device, including external frame and heat exchange unit, the external frame is used to be connected with other bionic fin;Heat exchange unit is located on the surface of bionic fin;The surface of bionic fin is divided into multiple micro-units;The micro-unit includes honeycomb structure frame and hydrophobic microcone array;Adjacent micro-units are abutted by honeycomb structure frame, and hydrophobic microcone array is arranged on the surface of bionic fin and located in the inside of honeycomb structure frame;Form hydrophobic microcone array-honeycomb composite structure.The application solves the problem of insufficient mechanical durability of traditional superhydrophobic coating, heat transfer efficiency attenuation through the cross-scale design of bionic honeycomb and lotus structure, realizes the synergistic promotion of heat transfer enhancement, self-cleaning and structural durability.

This invention discloses a 304 stainless steel mesh-based SiO2 superhydrophobic coating and its preparation method, applicable to the surface of downhole thermal recovery screens, involving surface engineering technology, superhydrophobic material preparation technology, and protection of downhole tools in oil and gas fields. The invention employs a simultaneous anodic oxidation deposition method, using a pretreated 100-mesh 304 stainless steel mesh as the anode and a platinum sheet as the cathode. The reaction is carried out in an ethylene glycol electrolyte containing 0.15 mol / L ammonium fluoride, 0.6 mol / L deionized water, and 8 g / L of 10 nm hydrophilic nano-SiO2, under constant pressure (25-85 V) and 25℃ for 20-40 min, generating a porous Fe-Cr-O oxide film in situ and embedding SiO₂ particles into the film pores. The coating is then modified with 1 vol% FAS-13 ethanol solution at room temperature in the dark for 90 min, and cured at 80-100℃ for 1-2 h. The coating prepared by this invention has an adhesion grade of 5A, a static water contact angle of >150°, and a roll-off angle of <10°. It also has excellent long-term stability, high temperature resistance, acid and alkali resistance, and self-cleaning properties. It can effectively solve the multiple failure challenges faced by downhole thermal recovery screen pipes in complex working conditions. Moreover, the preparation method is simple, easy to implement, environmentally friendly, and economical.

This invention relates to the field of fiber technology and discloses an antibacterial and anti-mite fiber, comprising the following components by weight percentage: 60%-80% polyester fiber, 1.2%-9% nano-antibacterial material, 5%-10% polymer matrix, 4%-10% thermo-sensitive polymer, 5%-12% self-healing polymer, and 2%-6% superhydrophobic coating material. It also discloses a method for preparing the aforementioned antibacterial and anti-mite fiber, comprising the following steps: S1, preparing a multilayer blend by separately mixing polyester fiber, polyamide, nano-antibacterial material, polymer matrix, thermo-sensitive polymer, self-healing polymer, superhydrophobic coating material, antiviral material, anti-allergy material, and renewable coating material. Through the integration of nano-antibacterial material, multilayer coating, intelligent response, and biomimetic structure, a multifunctional fiber has been developed, possessing antibacterial, anti-mite, self-healing, intelligent response, and self-cleaning capabilities, solving the problems of traditional fibers' single function, poor adaptability, and susceptibility to contamination.

This invention discloses a superhydrophobic asphalt pavement coating material and its preparation method, belonging to the field of pavement coating technology. The preparation steps of the superhydrophobic asphalt pavement coating material include: S1, reacting polypropylene glycol, hydroxyl-terminated polydimethylsiloxane, 2,2-dimethylolpropionic acid, isophorone diisocyanate, and dibutyltin dilaurate by stirring to obtain a prepolymer; cooling the system and adding perfluorohexylethanol for end-capping reaction; adding triethylamine dropwise, followed by water for emulsification and dispersion to obtain a polyurethane dispersion; S2, adding an active silanol mixture dropwise to an aluminum silicate microsphere suspension, refluxing for 6-10 hours, filtering out the solid, and drying to obtain modified nano-aluminum silicate microspheres; S3, adding the modified aluminum silicate microsphere suspension dropwise to the polyurethane mixture and stirring to obtain the superhydrophobic coating material. The superhydrophobic coating material prepared by this invention meets the superhydrophobic surface standard, has strong anti-corrosion ability, and also helps to improve the anti-skid effect of the pavement.

This invention provides a structural design and preparation method for a superhydrophobic reflective glass bead with high visibility in rainy conditions, relating to the field of road traffic safety facility materials technology. The structure of this superhydrophobic reflective glass bead with high visibility in rainy conditions is a core-shell gradient composite structure, comprising, from the inside out, a high-refractive-index reflective glass microsphere matrix, a chemically bonded transition layer, a reflective enhancement layer, and a superhydrophobic functional layer. This invention provides a structural design and preparation method for a superhydrophobic reflective glass bead with high visibility in rainy conditions, solving the core problems of reflectivity failure caused by water film coverage in rainy conditions, poor durability of superhydrophobic coatings, and insufficient visibility in low-light environments, achieving a synergistic improvement in reflectivity, hydrophobicity, visibility, and durability.

This invention discloses an intelligent cake baking device, belonging to the field of intelligent kitchen equipment technology. It includes a main body, a feeding mechanism, a whipping mechanism, a baking mechanism, a decorating mechanism, an intelligent control system, a safety protection system, and a cleaning mechanism. The internal modules of the main body are integrated according to their respective processes. The feeding mechanism ensures precise ingredient delivery; the whipping mechanism efficiently whips egg yolk batter and meringue through a double-bowl grading system and variable frequency speed control; the baking mechanism ensures cake shaping; the decorating mechanism prints cream and adds fruit; the intelligent control system supports touch, voice, and remote control via an app; the cleaning mechanism uses a self-cleaning system and a superhydrophobic coating to ensure hygiene; and the safety protection system provides multiple safety safeguards. This invention solves the problems of inaccurate ingredient delivery, unstable whipping, low integration, inconvenient cleaning, and insufficient safety in existing cake machines through full-process automation, high-precision control, and intelligent interaction, enabling one-click production of high-quality cakes, suitable for everyday home baking scenarios.

This invention discloses an aluminum alloy heterostructure component with a photothermal hydrophobic interface and its additive manufacturing method, relating to the technical field of aluminum alloy components. The additive manufacturing method involves using an arc additive manufacturing process with a 2024-T4 aluminum alloy plate as the substrate and 2319 aluminum alloy as the welding wire, performing five-layer deposition to obtain a shell-like biomimetic aluminum alloy heterostructure component. The surface of the aluminum alloy heterostructure component is then subjected to photothermal hydrophobic modification treatment. By adding ZrH2 and TiB2 powders during the additive manufacturing process, TiB2 and Al3Zr reinforcing phases are generated in situ with the aluminum alloy matrix. Combined with appropriate arc additive manufacturing process parameters and interlayer cooling regime, the component grain size can be refined to 13.9 μm, a reduction of approximately 19.19%, and the problem of uneven grain size distribution can be improved. A hydrophobic system with distinctive interface features of the additive component is constructed. A Y-QC solution and an organosilicon / silica hybrid superhydrophobic coating with a micro-nano hierarchical structure are prepared by spin coating. The coating adheres firmly to the additive substrate.

This invention discloses a yttrium oxide superhydrophobic coating, its preparation method, and its application, belonging to the field of surface engineering and functional coating technology. The method includes: pre-treating a metal substrate by grinding, cleaning, and sandblasting; using atmospheric plasma spraying technology to spray spherical yttrium oxide powder with a purity of 99.9% onto the substrate surface, controlling the coating thickness to be 200-600 μm; transferring the sample to a vacuum chamber and placing it under a pressure of 30-50 Pa for 7-10 hours to obtain the superhydrophobic coating. This invention utilizes plasma spraying to construct a micro-nano composite rough structure and stabilizes surface oxygen vacancies through vacuum treatment to reduce surface energy. The resulting coating exhibits a static water contact angle as high as 161.5° and a roll-off angle of only 7.5°, possessing excellent self-cleaning, anti-corrosion, and anti-fouling properties, as well as high adhesion and high hardness. This invention has a short process flow, low cost, and is suitable for large-scale industrial production.

This invention belongs to the field of hydrophobic coating technology, specifically relating to a method for preparing a wear-resistant superhydrophobic coating with a sodium chloride-etched micro / nano structure. The method includes the following steps: pretreatment of the substrate, preparation of an organic carrier, preparation of inorganic coating slurry and sodium chloride slurry, screen printing and sintering of the inorganic coating, screen printing and sodium chloride etching, post-treatment to form a micro / nano structure, preparation of superhydrophobic capsules, immersion of the post-treated sample in a superhydrophobic emulsion, extraction, and drying. This invention uses sodium chloride melt etching instead of laser etching, eliminating the need for highly corrosive chemicals, making it environmentally friendly and cost-effective. It introduces a biomimetic honeycomb structure, ensuring pattern accuracy through slurry and process control. The resulting coating possesses both excellent superhydrophobic properties and wear resistance, achieving wear-resistant superhydrophobic functionality of an inorganic coating under simple conditions. It is suitable for baking equipment and other applications, meeting the requirements for easy surface cleaning and wear resistance.