682 results about "Superhydrophobe" patented technology

The invention discloses a self-adaptive anti-sticking cable and a preparation method and application thereof. The self-adaptive anti-sticking cable comprises a superconducting core wire, a self-adaptive anti-sticking layer, a self-repairing insulating layer and a multifunctional outer sheath which are sequentially arranged from inside to outside. According to the scheme, the problems of debonding, breakdown, energy consumption and failure of a traditional cable in an extreme environment are comprehensively solved through gradient piezoelectric-phase change synergistic dynamic stress compensation, vertical boron nitride insulation network directional blocking, thermoelectric-super-hydrophobic multifunctional outer sheath integration and an extreme environment adaptive self-repairing system.

The invention relates to a preparation method of a radiation refrigeration coating with super-hydrophobic performance. According to the method, hydrophobic modified nano-particles and nano-particles with high reflectivity and high emissivity are blended in an adhesive solution, an adhesive is separated out to form a micron-sized aggregate through a non-solvent induced phase separation technology, and meanwhile, various nano-particles are uniformly coated on the surface of the aggregate, so that a stable suspension system is prepared. The radiation refrigeration coating has excellent radiation refrigeration performance, excellent super-hydrophobicity and good durability, the preparation process is simple, the radiation refrigeration coating is suitable for large-scale industrial application of outdoor scenes such as building outer walls, and a new technical solution is provided for developing efficient and lasting radiation refrigeration materials.

The invention belongs to the field of functional activated carbon materials, and relates to a super-hydrophobic activated carbon adsorption material as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out hydrolytic polymerization reaction on hydroxyl-containing nanoparticles and organosilane in an alkaline water-containing solvent to obtain the super-hydrophobic nanoparticles, and coating the surface of the activated carbon with the super-hydrophobic nano-particles to obtain the super-hydrophobic activated carbon. Wherein the chemical structural formula of the organosilane is as follows: # imgabs0 # R1 is straight chain alkyl of C10-C20, and R2, R3 and R4 are alkoxy or halogen of C1-C5. The super-hydrophobic activated carbon adsorption material provided by the invention not only has excellent super-hydrophobic performance, but also can avoid blockage of pores of activated carbon, has excellent adsorption performance, and can be widely applied to the field of adsorption treatment of volatile organic compounds.

The invention relates to the technical field of architectural glass coatings, and discloses a functional coating for architectural glass and a preparation method of the functional coating. Comprising the following raw materials in parts by weight: 40-60 parts of water-based acrylic resin emulsion, 0.4-0.6 part of a defoaming agent, 5-15 parts of modified nano zinc oxide, 0.3-0.5 part of a flatting agent, 1.5-2.5 parts of a coalescing agent, 3-5 parts of a curing agent, 2-4 parts of a dispersing agent, 30-45 parts of deionized water and 3-5 parts of a thickening agent. An alternating structure formed by copolymerization of alkenyl ether (ester) and fluorine-containing ethylene is grafted on the surface of nano-zinc oxide, so that the surface of the nano-zinc oxide has fluorine-containing chain segments, and the excellent hydrophobic property of the chain segments and the antistatic capacity of the nano-zinc oxide cooperate with each other, so that the coating has super-hydrophobic property and self-cleaning capacity; the compatibility of the modified nano-zinc oxide and the coating is remarkably improved, and meanwhile, the nano-zinc oxide has a shielding effect on ultraviolet rays in long and medium wave bands, so that a coating film formed by curing the coating has excellent anti-ultraviolet performance.

The invention relates to the technical field of PDRC coatings, and discloses a novel super-hydrophobic PDRC coating with high mechanical strength. The coating can be prepared by a spraying process with large-scale production and low energy consumption. The PDRC coating is composed of poly (poly (GMA-co-FMA)) modified by a silane coupling agent (KH550) and SiO2 / TiO2 particles. By adjusting the mass ratio of SiO2 to TiO2 and the content of poly (GMA-co-FMA), the optimized PDRC coating shows the solar reflectivity of 91.06% and the emissivity of 93.72%, has the super-hydrophobicity of about 157 degrees, and effectively prevents dust attachment. In addition, the PDRC coating still keeps the reflectivity of 91.06% after 3,000 times of wear-resistant cycles of 250g load, which indicates that the PDRC coating has excellent mechanical durability. Due to the excellent optical performance, the surface temperature of the coating is reduced by about 13.2 DEG C, and the net cooling power of about 109.2 W / m is provided. The PDRC coating can be further processed into variants with different colors without influencing the high reflectivity and emissivity of the PDRC coating, so that the PDRC coating is suitable for practical application.

The invention discloses a preparation method of a super-hydrophobic antibacterial fabric with a photothermal effect, which comprises the following steps: firstly, loading a photothermal preparation on the surface of the fabric to endow the fabric with photothermal performance, and then introducing a composite coating formed by hydrophobic silicon dioxide nanoparticles and a silane coupling agent with an alkane chain, the surface energy of the material is reduced, a micro-nano coarse structure is constructed, and the antibacterial fabric with excellent photo-thermal and super-hydrophobic properties is prepared; the surface water contact angle of the prepared super-hydrophobic antibacterial fabric is 158 degrees, the surface temperature reaches 120 DEG C under the irradiation of near-infrared light, and the super-hydrophobic antibacterial fabric shows excellent photo-thermal cycling stability and super-hydrophobic high-temperature resistance; the antibacterial rate of the super-hydrophobic antibacterial fabric exceeds 99.0% under the synergistic effect of passive super-hydrophobic antibacterial adhesion and active photo-thermal sterilization, and the super-hydrophobic antibacterial fabric is wide in antibacterial range and long in antibacterial life.

The invention provides a preparation method of a nano super-hydrophobic material. The preparation method comprises the following steps: firstly, selecting nano silicon dioxide particles with the particle size of 20-50 nanometers, and matching the nano silicon dioxide particles with heptadecafluorodecyl trimethoxysilane and other raw materials; the nano silicon dioxide particles are subjected to surface modification for 3-5 hours at 40-60 DEG C by controlling the volume ratio of absolute ethyl alcohol to deionized water to be (3-5): 1 and the mass ratio of the long-chain alkyl silane coupling agent to the nano silicon dioxide particles to be (0.5-1.5): 1. Adding 0.1-0.5% hydrochloric acid or sulfuric acid for catalysis, and stirring at room temperature for 2-4 hours to form a sol-gel system; ultrasonically cleaning the substrate, activating with a sodium hydroxide solution, coating by a spraying, dip-coating or spin-coating method, and drying and curing at 60-80 DEG C for 2-3 hours to obtain a finished product. The water contact angle of the prepared material is not lower than 150 degrees, the rolling angle is not higher than 5 degrees, the performance is stable in the environment with the temperature ranging from-20 DEG C to 80 DEG C and the humidity ranging from 20% to 90%, and the water contact angle is still not lower than 140 degrees after more than 500 times of abrasive paper friction tests.

The invention discloses a method for preparing a super-hydrophobic antibacterial fabric with a photothermal effect. The method first loads a photothermal preparation on the surface of the fabric to impart photothermal properties, and then introduces a composite coating formed by hydrophobic silica nanoparticles and a silane coupling agent with an alkane chain to reduce the surface energy of the material and construct a micro-nanoscale rough structure, thereby preparing an antibacterial fabric with excellent photothermal and super-hydrophobic properties. The super-hydrophobic antibacterial fabric prepared by the invention has a fabric surface water contact angle of 158° and a surface temperature of 120°C under near-infrared light irradiation, showing excellent photothermal cycle stability and super-hydrophobic high temperature resistance. The super-hydrophobic antibacterial fabric has an antibacterial rate of over 99.0% under the synergistic effect of passive super-hydrophobic antibacterial adhesion and active photothermal sterilization, and has a wide antibacterial range and a long antibacterial life.

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 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 present invention relates to a method for simultaneously achieving a superhydrophobic and superoleophobic surface on 5,000 series aluminum alloy in an anodic oxidation process without a pre-patterning step, wherein the uniform anodic oxide film can be produced even without a pre-patterning step, thus making it possible to reduce manufacturing costs, the anodic oxide film can be imparted with superhydrophobicity and superoleophobicity according to a coating composition in which a cross-linked PDMS derivative represented by chemical formula 1 and an organic solvent are used in a specific mixing ratio, the coating composition has a low manufacturing cost and the coating film thickness can be adjusted to several to several tens of nm, thus enabling application to the coating of a microstructured oxide film, and the method can be useful for creating a machine learning database for developing 5,000 series aluminum alloy surface treatment technology.

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

The invention provides functional super-hydrophobic quartz sand with an MOF structure as well as a preparation method and application of the functional super-hydrophobic quartz sand. The functional quartz sand is formed by assembling hexadecyl trimethoxy silane, ZIF-8 and polydopamine layer by layer. The preparation method comprises the steps of pretreatment of quartz sand, preparation of PDA (at) QS, preparation of ZIF-8 (at) PDA (at) QS and preparation of HDTMS (at) ZIF-8 (at) PDA (at) QS. When the prepared functional super-hydrophobic quartz sand with the MOF structure is used for removing microplastics in rainwater runoff, the removal rate of the HDTMS (at) ZIF-8 (at) PDA (at) QS on PP microplastics reaches 98.3%, and the adsorption capacity reaches 66.7 mg / g. The removal rates of PE and PET respectively reach 97.1% and 85.5%, and the adsorbent shows wide adsorption adaptability. The functional super-hydrophobic quartz sand with the MOF structure prepared by the invention is feasible to be used as an adsorbent or applied to a bioretention facility as a filler to remove micro-plastics in rainwater runoff.

The invention discloses an anti-icing testing method, device and equipment for a super-hydrophobic surface structure of energy equipment and a storage medium, and relates to the technical field of super-hydrophobic surface testing. Designing a super-hydrophobic surface structure based on the environmental main control factor to obtain a structure parameter set; simulating the super-hydrophobic surface structure by using an environment load condition determined based on the environment working condition matrix and a structure parameter set to obtain an equipment critical vibration frequency, and determining a current surface structure morphology based on the structure parameter set and the equipment critical vibration frequency; and determining a morphology simulation error based on the current surface structure morphology and the actual surface structure morphology of the super-hydrophobic surface structure, and monitoring the super-hydrophobic surface structure based on the morphology simulation error, the structure parameter set, the equipment critical vibration frequency and the preset control mechanical excitation frequency to obtain the ice growth rate and the ice adhesion work. The efficiency of anti-icing testing of the super-hydrophobic surface structure is improved.

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 provides a segmented coalescence system based on wettability gradient. The system comprises a storage tank, a segmented coalescer and a gravity separation tank, the segmented coalescer is composed of a plurality of layers of coalescence beds, a gravity separation area is clamped between every two layers of coalescence beds, through the wettability gradient design, the interface energy synergistic effect and optimized fluid dynamic characteristics are fully utilized, the separation efficiency reaches up to 98.50%, and the separation effect is good. The mixing design of the super-hydrophilic sand and the super-hydrophobic sand obviously enhances the wetting and coalescence efficiency of oil drops, the particle size gradient design realizes segmented coalescence of the oil drops, the lower layer of small-particle-size sand is demulsified and coalesces small oil drops, the upper layer of large-particle-size sand promotes combination of large oil drops, and the continuous water film and oil film structure effectively avoids the problem of pore channel blockage. And the bed pressure drop is reduced.

The application belongs to the technical field of functional coating materials, and particularly relates to a kind of super-hydrophobic solution based on fumed silica and its preparation method and application, comprising: step one, 20-200nm fumed silica nanoparticles are dispersed in ethanol / water mixed system, and sodium dodecyl benzene sulfonate is added to prevent agglomeration;Step two, under the catalysis of ammonia, tetraethyl orthosilicate and 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane are added dropwise in sequence for fluorination modification;Step three, fluorinated silica nanoparticle suspension is prepared by ultrasonic-assisted reaction;Step four, the solution is sprayed onto the surface of ceramic substrate with micro-nano structure to form a coating;Step five, strong adhesion without adhesive is realized by mechanical anchoring effect.The application realizes super-hydrophobic performance of 153±0.5° high water contact angle and physical adhesion stability under 100-200g load by the synergistic effect of nanoparticle size effect and substrate surface topological structure, low surface energy of fluorinated alkyl chain and Cassie-Baxter air cushion layer effect, and is especially suitable for self-cleaning surface, anti-icing coating and marine corrosion prevention field.

The invention discloses an anti-icing / deicing coating based on micro / nano double-size SiO2 as well as a preparation method and application of the anti-icing / deicing coating. The anti-icing / deicing coating comprises the following components in parts by weight: 2-6 parts of double-size SiO2, 2-6 parts of MXene, 1-2 parts of a PDMS main agent and a corresponding cross-linking agent, and 2-4 parts of an ER main agent and a corresponding curing agent, wherein the micron-sized SiO2 accounts for 1 to 3 parts, and the nano-sized SiO2 accounts for 1 to 3 parts. The preparation method comprises the following steps: doping double-size SiO2 into a PDMS / ER substrate to form a synergistic effect of micron particle skeleton support and nano particle surface modification, and preparing a coating with a lotus-leaf-shaped micron / nano bionic structure; according to the method, the combination mode between the coating and the base material is optimized, the sanding pretreatment process is adopted, and the three-dimensional anchoring structure is constructed on the surface of the aluminum base material, so that the dependence of a traditional coating on chemical bond combination is broken through, the binding force of the super-hydrophobic coating and the base material is remarkably improved, and it is ensured that the coating has good stability and durability in the severe environment.

The invention discloses a preparation method of a photo-thermal super-hydrophobic material and a continuous recovery device and method for high-viscosity spilled oil on a water surface, and belongs to the technical field of spilled oil adsorption. The preparation method of the photo-thermal super-hydrophobic material comprises the following steps: selecting a waste textile fabric with compression-recovery performance as a raw material, firstly putting the waste textile fabric in an ethanol solution for ultrasonic treatment, then soaking the waste textile fabric in an aqueous solution containing Tris-HCl and dopamine hydrochloride, and oscillating at a constant temperature; the preparation method comprises the following steps of: soaking in a pyrrole aqueous solution, adding anhydrous FeCl3, oscillating at room temperature, and soaking in an aqueous solution containing Tris-HCl, dopamine hydrochloride and polyethyleneimine after pyrrole is completely polymerized; and finally, soaking in an ethyl acetate solution containing polydimethylsiloxane and a curing agent, and heating and curing after soaking to obtain the photo-thermal super-hydrophobic material. The material not only realizes efficient cyclic utilization of textile wastes, but also has excellent photo-thermal performance and compressible recovery performance under a high-viscosity-wet condition.

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 application discloses a preparation method of a flexible super-hydrophobic anti-icing coating and relates to the technical field of super-hydrophobic materials.The preparation method comprises the following steps: preparing nano-silver loaded multi-layer graphene; mixing PVP solution and multi-layer graphene suspension uniformly, adding glucose, stirring uniformly, adding silver-ammonia solution to react when the suspension reaches a set temperature, centrifugally separating after the reaction is completed, obtaining the nano-silver loaded multi-layer graphene product, cleaning by using pure water or ethanol, and drying in an oven for standby; and preparing a flexible super-hydrophobic layer; smearing a mixture of PDMS and a PDMS curing agent on the surface of a glass sheet, uniformly spraying nano-loaded multi-layer graphene powder to the surface of the mixture of uncured PDMS and the PDMS curing agent by using an airbrush, and placing in an oven for curing to obtain the flexible super-hydrophobic anti-icing coating.The preparation method is simple and environment-friendly, can be used on a large scale, and can solve the problems of anti-icing and deicing on various surfaces.

The invention relates to an anti-icing super-hydrophobic coating for an aluminum conductor as well as a preparation method and application of the anti-icing super-hydrophobic coating. Single-ended epoxy fluorosilicone oil is grafted to the surface of an amino-functionalized metal organic framework material through an epoxy-amino ring-opening reaction to obtain a hydrophobically modified metal organic framework material, the hydrophobically modified metal organic framework material has a flexible fluorocarbon chain shell, and according to the design, the mechanical strength of a coating is enhanced through a rigid framework of MOFs; the stress concentration is relieved by utilizing the flexibility of a molecular chain of the fluorosilicone oil. The modified metal organic framework material is further dispersed in a matrix composed of fluorine-containing epoxy resin and an amino fluorosilicone oil curing agent, a multi-layer micro-nano structure is formed through ultrasonic dispersion and spraying curing processes, and the super-hydrophobic coating is obtained. According to the coating, through the synergistic effect of fluorosilane grafting modification and a micro-nano structure, the excellent performance that the static water contact angle is larger than or equal to 155 degrees, the rolling angle is smaller than or equal to 4 degrees, the ice adhesion strength is smaller than or equal to 40 kPa, and the wear resistance is excellent is achieved.

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 super-hydrophobic chitosan aerogel PDMS (at) Co-PBA / CS and an application of the super-hydrophobic chitosan aerogel PDMS (at) Co-PBA / CS in oil-water separation. Adding Co-PBA into a chitosan aqueous solution, and then adding PVA; adding acetic acid and glutaraldehyde into the obtained mixed solution, stirring in a water bath, and freeze-drying to obtain Co-PBA / CS aerogel; and dissolving a hydrophobic material and a curing agent in an organic solvent, stirring to obtain a uniform suspension, immersing the Co-PBA / CS aerogel into the suspension, and carrying out vacuum drying to obtain PDMS-coated Co-PBA / CS. The super-hydrophobic chitosan aerogel PDMS (at) Co-PBA / CS prepared by the preparation method disclosed by the invention has relatively high adsorption capacity on both organic solvents and oil, and the removal efficiency is close to 100%. In addition, the composite material also has excellent self-cleaning and photo-thermal conversion performance, and can realize surface cleaning and removal of high-viscosity oil. The multifunctional aerogel provides a new strategy for removing pollutants such as oil in a complex and severe water environment.

The present invention relates generally to methods of producing, using, and storing stable aqueously dispersed superhydrophobic compositions made from these compositions to provide superhydrophobic treatments on a range of porous, semi-porous, and non-porous target materials and surfaces as well as combinations of these materials and surfaces. More particularly, the present invention provides stably dispersed waterborne superhydrophobic compositions comprising colloidal silica or hydrophobically-modified silicon dioxide (i.e., silica) and one or more additional agents and / or compounds. When the compositions of the present invention are applied (e.g., via spray deposition, immersion, liquid application, and the like) to a suitable target material and / or surface the target is imparted with a durable (super)hydrophobic coating.

The invention relates to the technical field of self-repairing waterproof coatings, in particular to a polyurea self-repairing waterproof coating and a preparation method thereof.The polyurea self-repairing waterproof coating is prepared from diisocyanate, polyether amine, modified dicyclohexylamine, modified nano titanium nitride, modified nano silylene, a dispersing agent, a defoaming agent, a flatting agent, a stabilizer and ethyl acetate. The modified dicyclohexylamine, the modified nano titanium nitride and the modified nano silylene synergistically improve the self-repairing performance and the waterproof performance of the polyurea coating, the modified dicyclohexylamine promotes formation of a polyurea composite cross-linked structure, and a carrier supporting effect is provided for the modified nano titanium nitride and the modified nano silylene; the hydrophilicity of the modified nano titanium nitride and the super-hydrophobicity of the modified nano silylene form a complementary structure, so that hydrophobic protection is provided, and a self-repairing reaction is accelerated through a hydrophilic moisture absorption effect, so that the water repellency of the surface and the interior of the coating is doubly enhanced, and the integrity of a repaired area is kept.

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 preparation method of a fluorine-free super-hydrophobic and self-cooling synergistic silk fabric. The preparation method comprises the following steps: forming an M-O-Si bond from a silane coupling agent macromolecule and an inorganic metal oxide (MXOY) by using a covalent bond grafting method to obtain silane modified encapsulated MXOY particles; the obtained particles and amino-terminated organic silicon emulsion are subjected to an in-situ amination reaction on silk fibers to form the fluorine-free super-hydrophobic self-cooling synergistic organic-inorganic composite silk fabric. MXOY with high refractive index endows the silk fabric with a self-cooling function, and an organic silicon structure can change the roughness of the surface of the silk fabric and reduce the surface energy of the silk fabric, so that the silk fabric has fluoride-free super-hydrophobic performance. In addition, the MXOY shows better durability under the barrier action of an organic silicon structure. The fluorine-free super-hydrophobic self-cooling silk fabric prepared by the invention can be applied to the fields of high-end intelligent textiles, special protection and the like.

The invention belongs to the technical field of super-hydrophobic material underwater stability evaluation, and particularly relates to a super-hydrophobic material liquid-gas interface stability testing device and a super-hydrophobic material liquid-gas interface stability testing method. Laser is irradiated to the surface of a super-hydrophobic material by utilizing the underwater silver mirror phenomenon of the super-hydrophobic material; the stability condition of an underwater gas film of the super-hydrophobic material is explored by measuring the illumination of reflected light, the stability of the super-hydrophobic material under the hydrostatic pressure is quantitatively represented, the relation between microstructure parameters of the super-hydrophobic material and hydrostatic pressure resistance is explored, and accurate evaluation of the liquid-gas interface stability of the super-hydrophobic material under the hydrostatic pressure is achieved. A theoretical basis is provided for designing an underwater high-stability super-hydrophobic material; the device is simple in structure, the method is convenient to operate, the design is rigorous and reliable, the application range is wide, the stability of the gas layer on the surface of the super-hydrophobic material can be quantitatively represented only by measuring the reflected illuminance of a liquid-gas interface, and the error of a test result is small.