160 results about "Superhydrophobic coating" patented technology

The present invention discloses a preparation method of a photothermal super-hydrophobic coating with excellent anti-icing / de-icing performance under a low temperature and high relative humidity environment, first by in situ growth of photothermal Cu-MOF nanoparticles on the surface of low thermal conductivity fibrous clay mineral nanoparticles, constructing a two-level nano- / nano-structured composite photothermal particle, which is then subjected to low surface energy modification and introduced into a low thermal conductivity binder, and a binder is induced to phase separate to form a micron-scale binder / low surface energy nanoparticle aggregate by a non-solvent, and finally a photothermal super-hydrophobic coating with a three-level micro- / nano- / nano-structure is constructed by spraying. The three-level micro- / nano- / nano-structure of the coating simultaneously gives the coating excellent photothermal performance and the Cassie-Baxter state stability of the droplet on the coating surface under a low temperature and high relative humidity environment, so that it has excellent passive anti-icing / frosting and active de-icing / defrosting performance in this environment. The low thermal conductivity of the coating further suppresses the heat exchange between the substrate-water droplets, so that the passive anti-icing / frosting performance of the coating is further improved. In addition, the present invention has the advantages of simple preparation method and large-area preparation, laying a solid foundation for the practical application of photothermal superhydrophobic anti-icing coatings.

The present invention discloses a composite wear-resistant superhydrophobic coating and a method for using the same. The composite wear-resistant superhydrophobic coating is composed of a surface layer material and a bottom layer material stacked. The bottom layer material includes a mixture of fluorocarbon resin and epoxy resin; the surface layer material includes hydrophobic modified ceramic microspheres, hydrophobic modified nanocellulose coated on the surface of the hydrophobic modified ceramic microspheres, and hydrophobic modified nanocellulose filled inside the hydrophobic modified ceramic microspheres; it has good superhydrophobic performance, strong adhesion, high hardness, and strong scrub resistance.

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 discloses a high-light-transmittance heat-insulation super-hydrophobic composite coating as well as a preparation method and application thereof, and relates to the technical field of coating preparation. The composite coating provided by the invention comprises a heat-insulating coating positioned on a bottom layer and a super-hydrophobic coating positioned on a top layer, wherein the heat-insulating coating comprises a binder and heat-insulating material particles dispersed in the binder; the super-hydrophobic coating comprises a micro-nano composite structure composed of modified silicon dioxide nanoparticles and fumed silica nanoparticles, the modified silicon dioxide nanoparticles are silicon dioxide nanoparticles which are prepared through hydrophobic treatment and have the particle size of 80-150 nm, and the mass ratio of the modified silicon dioxide nanoparticles to the fumed silica nanoparticles with the particle size of 15-30 nm is (0.2-0.4) g: (0.1-0.2) g; according to the composite coating provided by the invention, the light transmittance and the hydrophobicity of the composite coating are synergistically improved by regulating and controlling the proportion of silicon dioxide with different scales while the light transmittance, heat insulation and surface super-hydrophobicity are realized.

The invention relates to a photo-thermal super-hydrophobic coating and a preparation method thereof, and belongs to the technical field of super-hydrophobic coatings. A coating material adopted by the coating comprises the following components in parts by weight: 1 part of nano carbon black, 44 to 5 parts of nano Fe3O4, 2 to 4 parts of 1H, 1H, 2H, 2H-perfluorodecyl trimethoxysilane, 47 to 64 parts of absolute ethyl alcohol, 6 to 8 parts of epoxy resin, 1 to 2 parts of an epoxy resin curing agent and 9 to 18 parts of ethyl acetate; the particle size of the nano carbon black is 15 nm to 25 nm, and the particle size of the nano Fe3O4 is 160 nm to 240 nm; the coating is excellent in super-hydrophobic performance and good in photo-thermal performance and icing resistance, can well protect a base body in a severe environment, and is particularly suitable for being used as a surface coating of a fan blade used in the severe environment. According to the method, the coating material is prepared into suspension liquid, the suspension liquid is sprayed on the base body, the coating surface is uniform, the method is suitable for any base body in any shape, the process is simple, and operation is easy and convenient.

The present invention discloses a superhydrophobic anti-icing surface based on a super-elliptical topological structure and a preparation method thereof. The superhydrophobic anti-icing surface includes a super-elliptical topological structure substrate and a superhydrophobic coating; the micro-structure of the super-elliptical topological structure substrate has a protection function, protecting the internal superhydrophobic coating from being damaged by impact or worn by friction and becoming ineffective; the superhydrophobic coating has a nanostructure with intrinsic superhydrophobicity, which can reduce the solid-liquid contact area and weaken the solid-liquid heat transfer, thereby delaying icing and reducing ice adhesion, and having anti-icing performance. The superhydrophobic anti-icing surface of the present invention has long-lasting and mechanically robust superhydrophobicity. By using the super-elliptical topological micro-structure to protect the superhydrophobic nanostructure, the problems of poor mechanical robustness and non-abrasion resistance of the superhydrophobic surface are solved, and the long-lasting property and durability of the superhydrophobic surface are enhanced, and it can be applied to fields such as aerospace, energy, and transportation.

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 field of coatings, and particularly discloses a super-hydrophobic organic coating as well as a preparation method and application thereof. The organic coating comprises the following components: organic resin and organic silicon modified composite particles; the mass ratio of the organic resin to the organic silicon modified composite particles is 1: (0.05-0.2); the composite particles contain nano diamond particles and a carbon material; the particle size of the carbon material is 1-30 [mu] m. A coating layer formed by the super-hydrophobic paint has the characteristics of super-hydrophobic performance and high hardness, the water contact angle of the coating layer is not less than 160 degrees, the water rolling angle of the coating layer is not more than 4 degrees, and the pencil hardness of the coating layer is 5H-7H. In addition, a coating formed by the coating has super-hydrophobic durability, specifically, after a friction experiment, the coating still keeps the super-hydrophobic capacity, the water contact angle is still larger than 150 degrees, and the coating has long service life during application.

The application provides a fluorine-free transparent super-hydrophobic coating and a preparation method and application thereof, and belongs to the technical field of coating materials. A three-dimensional network structure formed by self-assembly of a bisamidate derivative (1,4-di[(3,4-dioctyloxyphenyl)-bisamidyl]benzene, BPH-8) is used as a template, tetraethyl orthosilicate (TEOS) is used as a silica precursor to be adsorbed on the surface of the template to perform sol-gel polymerization to form silica with high transparency, then BPH-8 is removed by calcination to obtain a fibrous silica transparent surface, then octyltrichlorosilane is used for hydrophobic modification of the silica surface to obtain a transparent super-hydrophobic coating. The fluorine-free transparent super-hydrophobic coating prepared by the application has a water contact angle of 162.7°, a rolling angle less than 3°, an average visible light transmittance of 84.8%, and good self-cleaning capacity, and has potential application value in the fields of building glass, vehicle window glass, rearview mirror, optical lens, solar photovoltaic and the like.

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 discloses a super-hydrophobic coating based on a fluffy ZnO rod-PDMS, belonging to the technical field of super-hydrophobic coatings. A ZnO / polydimethylsiloxane (PDMS) layer is prepared by strictly controlling the ratio of ZnO and PDMS, a prepolymer A solution is added to a n-hexane solution and fully stirred, nano zinc oxide is added and fully stirred to make it uniformly mixed, a curing agent B solution is added and fully stirred, the mixed PDMS / ZnO nanoparticle solution is spin-coated on a glass slide, and the PDMS / ZnO nanoparticle substrate is prepared by curing; on this basis, staggered zinc oxide rods are prepared on the surface of a substrate by a hydrothermal method, and a fluffy microscopic surface coating is formed, after being modified by a FAS-17 solution, the super-hydrophobic coating has excellent self-cleaning performance, high acid and alkali corrosion resistance, and super-hydrophobic performance to various common liquids, and solves the problems of complicated preparation process, high material cost and poor long-term durability.

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.

The present invention discloses an intelligent deviation correction method for tunneling equipment based on inertial navigation, which relates to the technical field of dynamic stress measurement and includes the following steps: integrating piezoresistive strain microsensors on the surface of the support beam of the tunneling machine; in the present invention, dynamic stress self-sensing is realized by integrating piezoresistive sensors on the support beam, and an ANFIS model is used to construct a non-linear compensation relationship to break through the limitations of traditional linear calibration; a piezoelectric-magnetostrictive composite structure is designed to convert vibration energy into electrical energy, drive the inverse piezoelectric effect and feedback the calibration model to achieve self-powered dynamic compensation; a bionic self-repairing support beam is adopted, and microcracks are repaired in real time through a shape memory material and a nanoparticle filling structure, and a superhydrophobic coating is combined to enhance environmental adaptability; the passive vibration isolation idea is subverted, and a self-sensing-self-compensation-self-repair system is constructed to significantly improve the navigation accuracy, endurance and reliability of tunneling equipment under high-frequency vibration, providing key technical support for the intelligentization of underground engineering.

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 method for realizing the super-hydrophobicity of a magnesium alloy, and relates to a method for realizing the super-hydrophobicity of the magnesium alloy. The invention aims to solve the problems that the water resistance, the pollution resistance and the self-cleaning performance of the surface of the existing magnesium alloy are poorer, the service life of a metal base material is short, and the application of the metal base material is limited. The method comprises: 1, magnesium alloy pretreatment; 2, ultrasonic oil removal; 3, etching a micro-arc oxidation part; 4, preparing a super-hydrophobic solution; and 5, preparing the super-hydrophobic coating. The super-hydrophobic performance of the magnesium alloy is achieved, the super-hydrophobic film layer can construct an efficient corrosion protection system by cooperatively regulating and controlling interface wettability and surface chemical characteristics, the contact angle is larger than 150 degrees, the sliding angle is smaller than 10 degrees, excellent waterproofness and self-cleaning capacity are shown, water drops and dirt are prone to slipping off from the surface, the long-term cleaning effect is kept, and the corrosion resistance of the magnesium alloy is improved. Particularly, the method has important application value in the fields of automobiles, aviation, electronic products and the like.

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 relates to a blood pump with a microstructure super-hydrophobic surface, which comprises a blade and a super-hydrophobic coating coated on the surface of the blade, and a micron-sized periodic pit array is etched on the surface of the blade through a femtosecond laser texturing technology to form a microstructure. A micron-sized periodic pit array is etched on an interface, in contact with blood, of a blood pump through a femtosecond laser texturing technology, so that a bionic micro-nano composite structure is formed; and a super-hydrophobic functional layer is constructed on the surface of the microstructure by further adopting a multi-scale coating technology (including but not limited to a plasma enhanced chemical vapor deposition method, a high-speed oxygen fuel thermal spraying method, a photoetching template guided self-assembly method and a directional electrostatic spinning method). Zero damage of blood cells under the dynamic shearing condition can be achieved, meanwhile, platelet adhesion and blood coagulation factor activation are effectively inhibited, and a breakthrough solution is provided for solving related complications of artificial heart clinical application.

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 invention discloses an epoxy resin-based composite material super-hydrophobic coating and application thereof in a cement-based material, the composite coating comprises a bottom layer and a micro-nano structure layer, the bottom layer is made of epoxy resin E51 and a curing agent, and the micro-nano structure layer is made of urchin-shaped titanium dioxide, epoxy resin E51 and a curing agent. The epoxy resin E51 and the modified urchin-shaped titanium dioxide are adopted to construct a composite system of a bottom layer-micro-nano structure, the composite system is applied to the surface of a cement-based material, and the super-hydrophobicity and durability of the composite coating are improved.