14results about How to "Superhydrophobic" patented technology

The invention relates to a super-hydrophobic antifouling self-cleaning coating and a preparation method thereof. The coating comprises the following components in parts by weight: 20-50 parts of fluorocarbon resin; 1-10 parts of modified graphene oxide; 1 to 10 parts of modified nano silicon dioxide; 5-15 parts of a curing agent; 1-5 parts of a dispersant; 1-5 parts of a leveling agent; 1-5 parts of a defoaming agent; 30 to 60 parts of a solvent; the modified graphene oxide is prepared by modifying graphene oxide with gamma-methacryloxy propyl trimethoxy silane, and the modified graphene oxide is prepared by modifying graphene oxide with gamma-methacryloxy propyl trimethoxy silane; the modified nano silicon dioxide is prepared by modifying silicon dioxide through octyl triethoxy silane and nonafluorohexyltriethoxy silane. Compared with the prior art, the coating obtained by the invention has the advantages of excellent adhesive force, super-hydrophobicity, strong cleaning capability, difficulty in causing pollution, excellent acid resistance, alkali resistance and salt spray resistance, and can be applied to places such as buildings, cross-sea bridges, ships and the like which are eroded by rainwater for a long time and corroded by seawater.

The invention discloses a light heating super-hydrophobic coating and a preparation method thereof, and relates to the technical field of hydrophobic paints.The light heating super-hydrophobic coating is composed of a modified fluorosilicone resin solution, a modified nanoscale carbon-based material, a functional additive, polypyrrole resin, an adhesion promoter and the like. The preparation method comprises the following steps: firstly, preparing fluorosilicone resin, introducing a benzoxazine monomer into a structure as an anticorrosive resin matrix to prepare a modified fluorosilicone resin solution, introducing a photo-thermal layer by adding a modified carbon-based material, and preparing a sprayable super-hydrophobic coating by combining hydrophobic silicon dioxide, a filler aid and the like; according to the coating, the characteristics of light energy conversion through lattice vibration of carbon black and carbon nano tubes and hydrophobicity of nano silicon dioxide are utilized, and polypyrrole is added into a resin system, so that the light heating performance of the coating and the ground surface energy of fluorine and silicon elements are further guaranteed, and benzoxazine resin is subjected to ring opening polymerization; and the coating has excellent corrosion resistance, wear resistance, weather resistance and the like.

The invention discloses a method for preparing a puncture-resistant and strong acid-base resistant aramid composite fabric, comprising the following steps: spreading a composite coating solution on the aramid fabric, drying it, and obtaining the aramid composite fabric. The preparation method of the composite coating solution comprises the following steps: uniformly mixing inorganic particles and anhydrous ethanol to obtain solution A, uniformly mixing solution A and ammonia water under stirring conditions to obtain solution B, adding perfluorooctyl triethoxysilane to the solution B, stirring at 40 to 60° C. for 4 to 12 hours, cooling to room temperature, washing, and drying to obtain modified inorganic nanoparticles, adding modified inorganic nanoparticles to solution C under stirring conditions, stirring at 40 to 100° C. for 20 to 25 hours to obtain a composite coating solution, and using the composite coating solution of the invention to enhance the aramid fabric can simultaneously have super-hydrophobicity, puncture resistance, and strong acid-base resistance, and the super-hydrophobic composite coating has excellent mechanical stability and chemical robustness.

The invention discloses a chemical solution for etching an SMT printing template as well as a preparation method and application of the chemical solution, and relates to the technical field of etching solutions. A preparation method of the chemical solution comprises the following steps: adding ferric trichloride into a hydrochloric acid solution to obtain a solution A; adding sodium chloride into the copper chloride solution to obtain a solution B; the preparation method comprises the following steps: mixing fluorosilane FT-922, distilled water and absolute ethyl alcohol, performing ultrasonic dispersion, taking out, and performing magnetic stirring to fully hydrolyze; adding nonylphenol polyoxyethylene ether NP-10 and sodium silicate, and uniformly stirring to obtain a composite etching protective agent; and mixing the solution A, the solution B and a composite etching protective agent according to the volume ratio of (4-6): 1: (0.01-0.05), and uniformly stirring to obtain the chemical solution for etching the SMT printing template. After the SMT printing template is etched by the chemical solution provided by the invention, the surface of the material is matte, the structure is uniform, and the etched template surface also has excellent hydrophobic and antifouling properties.

The utility model discloses a kind of pollutant cleaning element and pollutant cleaning element preparation device, applied to wafer cleaning field, the pollutant cleaning element includes the cleaning surface for being contacted with target action object;The cleaning surface of pollutant cleaning element is formed with micro-nano structure;The cleaning surface of pollutant cleaning element formed with micro-nano structure has super hydrophobicity.The utility model is contacted with the cleaning surface of target action object by pollutant cleaning element, it is set to be formed with micro-nano structure, on the one hand, the specific surface area of cleaning surface is strengthened, the capacity of pollutant cleaning element adsorption and capture pollutant is improved, make cleaning effect more excellent, on the other hand, the micro-nano structure that this pollutant cleaning element possesses has super hydrophobic effect, so that liquid drop can take away pollutant when rolling on surface, improve the self-cleaning of this pollutant cleaning element, to improve the recycling of this pollutant cleaning element.

The invention discloses a rock modifier for increasing the migration distance of acid liquor as well as a preparation method and application of the rock modifier, and belongs to the technical field of rock modification. The rock modifier is prepared from the following raw materials in parts by mass: 2 to 10 parts of heptadecafluorooctyltriethoxysilane, 1 to 4 parts of tetraethoxysilane, 1 to 5 parts of perfluorooctane sulfonic acid, 1 to 4 parts of propargyl alcohol, 0.5 to 1.5 parts of inorganic salt, 45 to 55 parts of ethanol, 0.05 to 0.15 part of acid and 130 to 160 parts of water. The rock modifier is applied to oil and gas reservoir exploitation and is firmly adsorbed on the rock surface to form a layer of hydrophobic and oleophobic film, so that the migration distance of acid liquor is effectively increased, and the acidification operation efficiency is improved.

The invention belongs to the technical field of building curtain wall plate manufacturing, and particularly relates to a self-cleaning coating metal curtain wall plate and a preparation method thereof. The method comprises the following steps: S1, carrying out micro-corrosion on the surface of a metal substrate by using acid, and attaching a sputtering layer on the surface of the metal substrate subjected to micro-corrosion through magnetron sputtering; s2, sequentially performing dopamine and polystyrene on the surfaces of the hollow glass beads, and forming polystyrene hydrophobic layers with micro-nano structures on the surfaces of the hollow glass beads; then mixing the polystyrenated dopamine hollow glass beads, polydimethylsiloxane and petroleum ether to obtain a hydrophobic coating; and S3, the metal base plate subjected to surface pretreatment is coated with the hydrophobic coating, heating and curing are conducted, and the self-cleaning coating metal curtain wall plate is obtained. Compared with the prior art, the self-cleaning coating metal curtain wall plate serves as a decorative plate, the attractiveness of a building can be improved, the maintenance cost can be reduced to a great extent, and safety and durability are improved.

This invention relates to a method for preparing and applying a superhydrophobic expanded graphite coating. The invention addresses the problems of complex preparation processes, high costs, or insufficient mechanical stability in existing technologies. The method uses expanded graphite as the main raw material and adds epoxy resin to prepare a superhydrophobic expanded graphite coating with photothermal properties. The coating is uniformly sprayed onto the surface of circular nickel foam using a spraying technique, resulting in a multifunctional superhydrophobic expanded graphite photothermal evaporator with sustainability, corrosion resistance, recyclability, self-cleaning capabilities, and water purification abilities. This invention belongs to the field of superhydrophobic coating preparation technology.

This invention provides an air sterilization and filtration material for aquaculture and its preparation method. Using fibers containing surface hydroxyl and carboxyl groups as the substrate, a polymer network is constructed by reacting fluorosilane and polyvinyl alcohol in an alkaline system at 80-120°C. After modification of the silicate network structure and the polyvinyl alcohol polymer network, the modified fiber A reacts with phosphate and perfluoroalkyl acrylate monoesters to generate a double-bonded polymerized acrylate network structure, which is bonded to the hydroxyl groups on the fiber substrate surface through esterification. Simultaneously, the hydroxyl groups of modified fiber A undergo a condensation reaction with the phosphorus-oxygen bonds of phosphate, forming a polymer network material. The phosphate and carboxyl groups on the surface of this polymer network material also coordinate with silver ions at coordination sites, resulting in the air sterilization and filtration material for aquaculture. The material exhibits antibacterial and bactericidal properties, excellent resistance to acid mist, and excellent antibacterial and antifungal properties. Furthermore, it possesses superhydrophobic properties, exhibiting very low air resistance when used in aquaculture air sterilization and filtration applications.

The invention discloses a surface microstructure high-voltage wire ('micro-structure wire 'for short) and a preparation method thereof, and the surface microstructure high-voltage wire is continuously prepared by a wire-drawing die with a micro-nano structure on the surface of an inner hole through a wire-drawing nano-imprinting method. The preparation method is low in cost and high in efficiency, can produce high-performance micro-structure wires with super-hydrophobic, super-oleophobic, anti-icing, anti-freezing rain, anti-rime, anti-dirt-accumulation and self-cleaning functions in batches, solves the problem of icing of overhead high-voltage wires in ice, snow and freezing rain weather, and improves the working efficiency of the overhead high-voltage wires. And a new technical scheme is provided for improving the reliability and the stability of the power transmission line.

The invention belongs to the technical field of coatings for insulation protection in the power industry, and particularly relates to a two-component fluororesin-based anti-pollution flashover coating as well as a preparation method and application thereof. According to the invention, a surface micro-nano rough structure is constructed by introducing the compound fluororesin and the multi-size powder particles, adding the auxiliary agent and the like, and the anti-pollution flashover coating with strong aging resistance, super-hydrophobicity and high self-cleaning property is designed. Wherein the compound fluororesin adopts a perfluororesin base material, the carbon chain of the perfluororesin is spiral, and the energy of a C-F bond is relatively large, so that the carbon-carbon bond is protected, the surface bond is prevented from being broken and aged, and the aging resistance of the coating in outdoor use is improved; nanoscale titanium dioxide has an organic photocatalytic degradation effect, so that adhesion and accumulation of organic dirt caused by long-term outdoor use are avoided; through the synergistic effect of all the components, a surface micro-nano rough structure is constructed, so that the surface of the coating has super-hydrophobicity, dirt on the surface is easily taken away in rainy days, high self-cleaning performance is achieved, and important theoretical significance and application value are achieved.

The invention discloses a super-hydrophobic self-cleaning aluminum alloy coating and a preparation method thereof, and belongs to the technical field of metal surface treatment.The preparation method comprises the following steps that S1, an aluminum alloy substrate is pretreated; s2, mixing TEOS, absolute ethyl alcohol and diluted hydrochloric acid in a beaker, and adding PFOTES to obtain sol; s3, mixing the SiO2 powder, the TiO2 powder, PVP (Polyvinyl Pyrrolidone) and deionized water, and carrying out spray granulation, so as to obtain SiO2-TiO2 composite powder; s4, the SiO2-TiO2 composite powder, absolute ethyl alcohol and PFOTES are mixed, and composite powder slurry is obtained; s5, spraying the sol on the surface of an aluminum alloy substrate, and drying to obtain an aluminum alloy basic coating; s6, the composite powder slurry is sprayed on the aluminum alloy coating base layer, and after drying, the aluminum alloy composite coating is obtained; and S7, the aluminum alloy substrate is placed in a drying oven for heat treatment, and the super-hydrophobic self-cleaning aluminum alloy coating is obtained. The coating system disclosed by the invention is stable and can effectively realize self-cleaning.

The present application discloses a chemical solution, a preparation method and an application thereof for etching of SMT printing templates, and relates to the technical field of etching liquids. The preparation method of the chemical solution is as follows: ferric chloride is added to a hydrochloric acid solution to obtain a solution A; sodium chloride is added to a cupric chloride solution to obtain a solution B; fluorosilane FT-922, distilled water and anhydrous ethanol are mixed and ultrasonically dispersed, and then magnetic stirring is taken out to fully hydrolyze it; nonylphenol polyoxyethylene ether NP-10 and sodium silicate are added and stirred evenly to obtain a composite etching protective agent; solution A, solution B, and a composite etching protective agent are mixed in a volume ratio of 4-6:1:0.01-0.05, stirred evenly, and a chemical solution for etching of SMT printing templates is obtained. After the chemical solution provided in the present application etches the SMT printing template, the surface of the material is matte and the structure is uniform, and the surface of the template after etching also has excellent hydrophobic and antifouling properties.

The invention discloses a one-step preparation method of super-hydrophobic PTFE (Polytetrafluoroethylene) with a micro-nano double-layered structure, and particularly relates to the field of thermal spraying processes, which comprises the following steps: step 1, performing sand blasting treatment on the surface of a workpiece to roughen the surface of the workpiece; 2, under the condition that PTFE emulsion is not injected, a direct-current plasma spray gun is started, and the surface of the workpiece is scanned through pure flame flow for preheating; and 3, after preheating is completed, PTFE emulsion is injected into flame flow, the surface of the workpiece is sprayed, and the super-hydrophobic PTFE coating of the micro-nano double-layer structure is prepared. According to the method, the PTFE emulsion is used as a raw material for the first time, the super-hydrophobic PTFE coating with the micro-nano double-layered structure is prepared through direct-current plasma spraying, and one-step rapid preparation of the super-hydrophobic PTFE coating is achieved. According to the method, PTFE curing and sintering treatment in the prior art are not needed, any etching post-treatment process is also not needed, and the micro-nano double-layer surface structure is formed after the coating is prepared.