193 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 discloses an anti-icing wire, a manufacturing production line and a manufacturing method of the anti-icing wire. The anti-icing wire comprises a wire core; the inner-layer aluminum wire is arranged on the outer side of the wire core; the outer-layer aluminum wire is arranged on the outer side of the inner-layer aluminum wire; and the outer surface hydrophobic layer is made of a hydrophobic material and is arranged on the outer side of the outer-layer aluminum wire. The invention discloses a production line for manufacturing an anti-icing wire. The production line is provided with a first cleaning device, a wire sand blasting machine, a second cleaning device, a wire coiling device, a first spraying chamber, a first drying chamber, a second spraying chamber and a second drying chamber which are used for producing the anti-icing wire. The surface of the wire is coated with a large amount of hydrophobic materials, the capture rate of a power transmission line on supercooled water drops can be reduced, the adhesive force between ice and the coating can be reduced, the super-hydrophobic coating can delay freezing of the water drops on the surface of the coating, and therefore deicing or icing prevention is achieved. The anti-icing cable is especially suitable for being used in icing areas, and has a good anti-icing effect.

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 invention discloses a super-hydrophobic waterborne polyurethane coating capable of realizing friction repair as well as a preparation method and application thereof, and relates to the technical field of coatings. The coating comprises the following components in percentage by mass: 5 wt.%-15 wt.% of hydrophobic modified nanoparticles, 15 wt.%-20 wt.% of porous diatomite, 30 wt.%-60 wt.% of waterborne polyurethane and the balance of water, wherein the sum of the mass percentages of the components is 100%; holes of diatomite are filled with hydrophobically modified nanoparticles to form diatomite capsules, and the hydrophobically modified nanoparticles are uniformly dispersed in a waterborne polyurethane emulsion by ingeniously utilizing the hydrophilicity of the surface of the diatomite, so that the uniformly and stably dispersed super-hydrophobic waterborne polyurethane coating is obtained. The super-hydrophobic coating prepared from the coating has friction repair performance.

The invention discloses a preparation method of a PVDF-Q-ZIF-67 / POTS membrane and application of the PVDF-Q-ZIF-67 / POTS membrane in treatment of radioactive waste liquid of a nuclear power plant, and the preparation method comprises the following steps: firstly, blending PVA (polyvinyl alcohol), Que (quercetin) and PVDF (polyvinylidene fluoride) for electrostatic spinning to obtain a PVDF-Q hydrophilic layer, then carrying out electrostatic spinning on the blended LiCl and PVDF to obtain a PVDF base membrane, and then carrying out electrostatic spinning on the PVDF base membrane by adopting ZIF-67, POTS (1H, 1H, 2H, 2H, 2H, 2H, 2H, 2H, 2H, 2H, 2H, 2H, 2H, 2H, 2H, 2H, 2H, 2H, 2H, 2H The method comprises the following steps of: coating a PVDF (Polyvinylidene Fluoride) base membrane with a ZIF-67 / POTS super-hydrophobic coating by using a PVDF-Q-ZIF-67 / POTS super-hydrophobic coating as a raw material, assembling to synthesize a PVDF-Q-ZIF-67 / POTS membrane, and finally introducing the radioactive waste liquid into a direct contact type membrane distillation device adopting the PVDF-Q-ZIF-67 / POTS membrane for treatment, so that the concentration of the radioactive waste liquid and the efficient separation of nuclides can be realized. The PVDF-Q-ZIF-67 / POTS membrane is applied to treatment of nuclear power station radioactive waste liquid, after direct contact type membrane distillation, the flux of the PVDF-Q-ZIF-67 / POTS membrane can be kept stable for a long time, the concentration multiple is high, the nuclide rejection rate is larger than or equal to 99.9%, and the PVDF-Q-ZIF-67 / POTS membrane is stable in chemical property, good in pollution resistance and good in application prospect in the fields of nuclear power stations, nuclear fuel plants and the like.

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 discloses a wear-resistant transparent super-hydrophobic coating. The wear-resistant transparent super-hydrophobic coating comprises a transparent super-hydrophobic coating sprayed on the surface of a transparent substrate containing an etching groove, grooves which are uniformly distributed at intervals are formed in the surface of the transparent substrate containing the etching groove; the super-hydrophobic coating is obtained by spraying transparent super-hydrophobic SiO2-based dispersion liquid on the surface of a transparent substrate containing an etching groove, and the transparent super-hydrophobic SiO2-based dispersion liquid contains an alcohol solvent, alkali liquor, a silicon source, a silane coupling agent and a low-surface-energy modifier. According to the method, the surface of the transparent substrate is etched by adopting a laser etching process, and an improved transparent super-hydrophobic SiO2-based dispersion liquid and a spraying process are combined, so that the super-hydrophobic coating with good adhesion performance, wear resistance, hydrophobic performance and anti-reflection performance is constructed on the surface of the transparent substrate; the method can be applied to the fields of automobile glass, textile fabrics, oil-water separation, electronic communication and the like; and the related preparation process is simple, the reaction condition is mild, the method is environment-friendly, and large-scale popularization and application can be realized.

The invention discloses a durable super-hydrophobic composite filler, a preparation method and application thereof, a durable super-hydrophobic composite coating and a coating, and belongs to the technical field of composite micro-nano coatings. The preparation method comprises the following steps: 1) dispersing hydroxylated boron nitride particles with a first solvent, adding acid to adjust the particles to be acidic, then adding a silicon source, and growing micron-sized SiO2 on the surface of hydroxylated boron nitride in situ to obtain first-grade BN-coated SiO2 composite particles; and 2) dispersing the primary BN-coated SiO2 composite particles by a second solvent, adding alkali to adjust the primary BN-coated SiO2 composite particles to be alkaline, then adding a silicon source and a modifier, and growing nanoscale SiO2 on the surfaces of the primary BN-coated SiO2 composite particles in situ to obtain the durable super-hydrophobic composite filler. A super-hydrophobic coating prepared by applying the durable super-hydrophobic composite filler to a coating has the advantages of high mechanical property and excellent durability, the preparation process is simple and environment-friendly, and the preparation and application of the environment-friendly, large-scale and large-area super-hydrophobic coating are expected to be realized.

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 relates to the technical field of high polymer materials, and discloses a high-toughness glass fiber reinforced PA66 composite material and a preparation method thereof, the high-toughness glass fiber reinforced PA66 composite material comprises the following raw materials by mass: 60-80 parts of PA66 resin, 20-40 parts of modified glass fiber, 0.1-2 parts of a coupling agent, 0.1-2 parts of a plasticizer, 0.5-1 part of an antioxidant, and 0.1-3 parts of a lubricant. An organic-inorganic hybrid super-hydrophobic coating in the modified glass fiber forms a hydrophobic channel, so that a moisture diffusion path can be blocked, water molecule diffusion can be prolonged, the water absorption performance of the PA66 composite material can be reduced, and the mechanical strength of the PA66 composite material can be improved; the modified glass fiber reinforced PA66 has excellent mechanical property, high heat resistance and dimensional stability, and the formed PA66 composite material has higher mechanical property and waterproof property.

The invention relates to the technical field of coatings, in particular to a photo-thermal super-hydrophobic coating as well as a preparation method and application thereof. The invention provides a photo-thermal super-hydrophobic coating. The photo-thermal super-hydrophobic coating is prepared from the following raw materials in parts by weight: 3 to 5 parts of organic silicon polysilazane, 5 to 7 parts of methyl phenyl polysiloxane, 3 to 5 parts of vinyl chloride and vinyl acetate copolymer, 4 to 6 parts of modified ferroferric oxide, 5 to 7 parts of fluorinated multi-walled carbon nanotube, 4 to 6 parts of fluorinated black titanium dioxide, 59 to 82 parts of organic solvent and 0.02 to 0.2 part of defoaming agent. Wherein the modified ferroferric oxide is ferroferric oxide coated with copper chloride. The photo-thermal super-hydrophobic coating provided by the invention has ultrahigh hydrophobic performance and good photo-thermal conversion performance, the water contact angle can reach 155 degrees or above, the rolling angle is less than 10 degrees, the surface hardness of the coating is 4H or above, the adhesive force is grade 0, and the comprehensive performance is excellent.

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 discloses a preparation method of a self-heating PCM anti-icing / deicing super-hydrophobic coating, and belongs to the field of preparation of anti-icing coatings. The invention aims to solve the problems of high energy consumption, poor mechanical property and easy pollution of the traditional anti-icing material. The method comprises the following steps: 1, preparing a 1-ethyl-3-methylimidazolium tetrafluoroborate grafted nano cellulose copolymer; 2, preparing a self-heating PCM anti-icing / deicing super-hydrophobic coating solution; and 3, coating. The self-heating super-hydrophobic coating based on paraffin and palmitic acid eutectic carbon nanotubes is prepared by adopting an easy-to-spray method, has self-heating and super-hydrophobic dual performance, can store heat when sunlight is sufficient and release heat at low temperature, has good self-cleaning performance and mechanical performance, and can be used for preparing the self-heating super-hydrophobic coating based on paraffin and palmitic acid eutectic carbon nanotubes. The device is suitable for anti-icing and deicing in cold regions. According to the invention, a method of self-heating PCM anti-icing / deicing super-hydrophobic coating is adopted, and the icing time is prolonged through self-heating, photo-thermal and super-hydrophobic functions.

Disclosed are a superhydrophobic coating with abrasion resistance and a preparation method thereof. The coating has a composite structure formed by a nanohybrid composed of nano-SiO2 and multi-wallet carbon nanotubes, and a resin as a matrix.

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.

The utility model relates to the technical field of super-hydrophobic coating wear resistance detection, and discloses an in-situ detection device for the wear resistance of a super-hydrophobic coating, which comprises a mounting rack, a detection brush arranged on the inner side of the mounting rack, and an adjusting block, the bottom side of the adjusting block is uniformly provided with accommodating grooves, and the interiors of the accommodating grooves are connected with limiting blocks in a sliding manner. According to the in-situ detection device for the wear resistance of the super-hydrophobic coating, by rotating the threaded rod, the limiting block can be driven to move downwards in the containing groove, the corresponding detection brush is further pushed to move out of the containing groove and abut against the surface of the super-hydrophobic coating to be detected, and the problem that according to an existing in-situ detection device for the wear resistance of the super-hydrophobic coating, detection brushes of different specifications are inconvenient to adjust and replace can be solved; through the combination of the sliding groove, the servo motor, the lead screw and the sliding block, the servo motor is controlled to work, the sliding block can drive the adjusting block to reciprocate left and right in the adjusting groove, and the detection brush is further driven to test the wear resistance of the super-hydrophobic coating.

The present invention discloses a preparation method of a photothermal superhydrophobic coating with high-efficiency photothermal conversion performance. A composite powder with high-efficiency photothermal performance is prepared by compounding PTFE powder, nano-TiN particles and hydroxylated multi-walled carbon nanotubes at 325 °C. After being dispersed, it is sprayed on a semi-cured epoxy resin coating, thereby preparing a photothermal superhydrophobic coating with high-efficiency photothermal conversion performance. The coating of the present invention simultaneously has high-efficiency photothermal conversion performance and superhydrophobic performance, combines passive anti-icing and active photothermal de-icing, and can be used for anti-icing / de-icing requirements in various scenarios.

The invention relates to the field of coatings, and discloses a method for constructing a fluoride-free wear-resistant transparent super-hydrophobic coating, which comprises the following steps: (1) carrying out surface roughening treatment on wood; (2) wood is immersed in the oil-phase impregnation liquid at 75-85 DEG C, and wood with an uncured hydrophobic layer on the surface is obtained after the wood is taken out; the oil phase impregnation liquid comprises carnauba wax, tung oil and ethyl acetate; (3) the wood is immersed in hydrophobic nano-silica dispersion liquid with the temperature 50-60 DEG C lower than that of the oil-phase impregnation liquid, an uncured hydrophobic layer is cooled and cured into a cured hydrophobic layer with a micron-sized rough surface, and hydrophobic nano-silica is attached to the surface of the cured hydrophobic layer; and taking out, ventilating and drying, enabling the tung oil to permeate into the wood and generate crosslinking, and finally constructing and forming the fluoride-free wear-resistant transparent super-hydrophobic coating on the surface of the wood. According to the method, the super-hydrophobic coating with the micro-nano structure can be constructed on the surface of the wood, and the super-hydrophobic coating has high wear resistance and high transparency.

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.