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48results about How to "Stay superhydrophobic" patented technology

Transparent super-hydrophobic coating material and method for preparing transparent super-hydrophobic coating by transparent super-hydrophobic coating material

The invention discloses a transparent super-hydrophobic coating material. The raw materials of the transparent super-hydrophobic coating material comprise gas-phase silica nano-particle dispersion liquid which consists of gas-phase silica nano-particles and a solvent, and a hydrophobic treating agent. The invention further discloses a preparation method of a transparent super-hydrophobic coating; a coating of a micro-nano structure is prepared by rubbing and coating a substrate with the gas-phase silica nano-particle dispersion liquid, and then the coating is subjected to surface hydrophobization treatment by the hydrophobic treating agent to obtain the transparent super-hydrophobic coating. According to the super-hydrophobic coating material provided by the invention, hydrophobization treatment manners can be changed flexibly according to the difference of coated substrates; the method for preparing the super-hydrophobic coating has low requirement on equipment; the using cost is extremely low; the method is simple; the coating application is convenient; a large-area high-efficiency super-hydrophobic coating can be prepared; the prepared super-hydrophobic has excellent super-hydrophobicity, high transparency, droplet impact resistance, temperature and pH stability, durability, and repeated rubbing and coating capacity, and can be applied to almost all currently known solid surfaces.
Owner:ZHEJIANG UNIV

Preparation method of persistent icing-resistant superhydrophobic coating

ActiveCN106883650AImproved long-lasting anti-icing performanceLong-lasting anti-icing performanceAntifouling/underwater paintsPaper coatingSuperhydrophobePolymer science
The invention relates to the field of preparation of superhydrophobic coatings, in particular to a preparation method of a persistent icing-resistant superhydrophobic coating. The preparation method comprises the following steps: firstly, carrying out cleaning and sand-blasting roughen treatment on the surface of a substrate; secondly, blending epoxy resin, a curing agent and a first solvent to obtain an epoxy resin solution; thirdly, dispersing submicron particles and nanoparticles into a second solvent, and then adding a silane coupling agent to obtain particle composite suspension; fourthly, spraying the epoxy resin solution obtained in the second step on the surface of the substrate treated in the first step, and partially curing epoxy resin adhesive; fifthly, spraying the particle composite suspension obtained in the third step on the surface of the substrate obtained in the fourth step and completely curing; sixthly, obtaining the persistent icing-resistant superhydrophobic coating. The persistent icing-resistant superhydrophobic coating disclosed by the invention has the beneficial effects that the superhydrophobic coatings prepared on the surfaces of all the substrates have good durability and firmness and persistent icing-resistant property.
Owner:哈尔滨毓干科技有限公司

Preparation method of modified silicon dioxide obtained via super-hydrophobic modification

The invention discloses a preparation method of modified silicon dioxide obtained via super-hydrophobic modification. The preparation method comprises following steps: 1) a raw material A (a silicon dioxide base material, dry powder) is delivered into a mixer, a mixed state is maintained, a raw material C (a super-hydrophobic modification accessory ingredient prepared via mixing of 1.5% acetic acid aqueous solution and isopropanol at a mass ratio of 1-3:4-10) is atomized, and is sprayed into the mixed uniformly, and stirring is kept; 2) a raw material B (a hydrophobic modification agent organic silane coupling agent) is atomized, and is sprayed into the mixer uniformly, and stirring is kept; 3) aging is carried out; and 4) ultrafine grinding is carried out so as to obtain a finished product. Fewer processing steps are needed; energy consumption is low; requirements of industrialized large-scale production can be satisfied; particle size distribution of the modified silicon dioxide obtained via super-hydrophobic modification is uniform; pore structures are stable; and hydrophobic performance is stable. The prepared super-hydrophobic silicon dioxide prepared via the preparation method is taken as a flatting agent, and can be used for providing paint with super hydrophobic performance; film forming coating particle arrangement is uniform; and luster is soft.
Owner:北京航天赛德科技发展有限公司

Preparation method of super-hydrophobic aluminum sheet

The invention relates to a preparation method of an aluminum sheet, in particular to a preparation method of a super-hydrophobic aluminum sheet. The preparation method of the super-hydrophobic aluminum sheet concretely comprises the steps of removing a surface oxidation layer of the aluminum sheet, then cleaning, baking, allowing the aluminum sheet to serve as a positive pole and inert metal as a negative pole, electrolyzing the positive pole and the negative pole, cleaning again, drying, placing the aluminum sheet in a surface modifier to be soaked, cleaning, then drying, and obtaining the super-hydrophobic aluminum sheet. According to the preparation method, materials are easy to obtain, low in cost, safe and nontoxic; sodium chloride serves as an electrolyte; a direct current power supply can be replaced by a dry battery; a container containing an electrolytic solution for electrolysis can be replaced by a glass cup; stearine and tetradecanoic acid are safe and nontoxic, does not pollute the environment, and can be purchased in the market easily; the steps are simple; the preparation is convenient; an aluminum or aluminium alloy super-hydrophobic surface prepared by the method has very good surface hydrophobicity; a contact angle of the super-hydrophobic surface is about 160 degrees; a rolling angle of the super-hydrophobic surface is about 9 degrees; longer super-hydrophobicity can be kept at room temperature; and articles for daily use, such as sodium chloride, the direct current power supply, a lead wire and absolute ethyl alcohol can be used for preparing the super-hydrophobic aluminum surface.
Owner:XIAMEN UNIV

Superamphiphobic self-cleaned fluorosilicone coating material and preparation method thereof

The invention discloses a superamphiphobic self-cleaned fluorosilicone coating material which comprises raw materials, namely a fluorosilicone amphiphobic treatment agent and a solvent, wherein the fluorosilicone amphiphobic treatment agent is prepared from an amino alkyl silane coupling agent and a hexafluoro oxygen-containing propane tripolymer in a mole ratio of 1 to 1 through reactions at onestep; the solvent is an alcohol or water-alcohol mixed agent. The invention further discloses a method for preparing a superamphiphobic self-cleaned coating from the coating material. The method comprises the following steps: brushing or spraying the prepared coating material to the surface of a substrate, so as to obtain thesuperamphiphobic self-cleaned coating after the solvent is completely volatilized. The fluorosilicone coating material disclosed by the invention is simple in preparation process, a small number of types of raw materials with low cost are used, in addition, the material isfree of toxic and/or side effects on human beings or the environment. The prepared coating has superamphiphobic and self-cleaned functions, meanwhile has pH value stability and durability, and in addition is reversible in coating process, free of damage to base material surface colors or air permeability, applicable to nearly all building base material surfaces, and applicable to on-scale industrial production.
Owner:曹颐戬

Fluorinated graphene-containing waterproof and moisture-permeable composite fabric and preparation method thereof

The invention belongs to the field of electrostatic spinning functional materials, and relates to a preparation method of a material capable of being applied to the waterproof and moisture permeable field, in particular to a fluorinated graphene-containing waterproof and moisture-permeable composite fabric and a preparation method thereof. The composite fabric has the advantages of super-hydrophobicity, high efficiency, better air and moisture permeability, energy conservation and the like. The average diameter of the fiber is 130 to 150 nm, the nanofiber waterproof and moisture permeable composite film is of a three-dimensional network structure, the hole diameter is small, a curved communication hole structure is formed, breathability is good, external severe weather infringement can beeffectively avoided, rain and snow penetration is prevented, sweat and moisture generated by movement of a human body can be discharged in time, so that the microenvironment of the human body is regulated and controlled, good comfort is provided for the human body, the protection function and the heat and moisture comfort of the garment fabric are unified, and the composite fabric is innovativelyapplied to the fields of medical treatment and public health, building outer walls, aerospace, aquatic product industry and the like.
Owner:ZHONGYUAN ENGINEERING COLLEGE

Preparation method of high-wear-resistance self-repairing super-hydrophobic coating

The invention provides a preparation method of a high-wear-resistance self-repairing super-hydrophobic coating. The preparation method comprises the following steps: step 1, adding a low-surface-energy siloxane solution into absolute ethyl alcohol, dispersing acetic acid into the solution, conducting magnetic stirring to obtain a solution A, mixing deionized water and ethanol to obtain an aqueous ethanol solution, adding a filler into the aqueous ethanol solution, performing ultrasonic dispersion to obtain a solution B, dropwise adding the solution B into the solution A, performing magnetic stirring, and centrifuging, cleaning and drying a precipitate to obtain a micron-sized modified filler and a nanometer modified filler; and step 2, adding the micron-sized modified filler, polyol and a curing agent into an ethanol solution, carrying out ultrasonic treatment, adding the nanometer modified filler and a siloxane solution, conducting stirring, spraying a formed mixture onto a substrate by using a spray gun, and subjecting the coated substrate to standing in an oven to obtain the super-hydrophobic coating. The high-durability super-hydrophobic coating prepared by the method disclosed by the invention is still a super-hydrophobic surface after being abraded by abrasive paper, scraped by a knife, scraped by a steel wire ball and the like, which proves that the coating has very high durability.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

A kind of preparation method of superhydrophobic modified silicon dioxide

The invention discloses a preparation method of modified silicon dioxide obtained via super-hydrophobic modification. The preparation method comprises following steps: 1) a raw material A (a silicon dioxide base material, dry powder) is delivered into a mixer, a mixed state is maintained, a raw material C (a super-hydrophobic modification accessory ingredient prepared via mixing of 1.5% acetic acid aqueous solution and isopropanol at a mass ratio of 1-3:4-10) is atomized, and is sprayed into the mixed uniformly, and stirring is kept; 2) a raw material B (a hydrophobic modification agent organic silane coupling agent) is atomized, and is sprayed into the mixer uniformly, and stirring is kept; 3) aging is carried out; and 4) ultrafine grinding is carried out so as to obtain a finished product. Fewer processing steps are needed; energy consumption is low; requirements of industrialized large-scale production can be satisfied; particle size distribution of the modified silicon dioxide obtained via super-hydrophobic modification is uniform; pore structures are stable; and hydrophobic performance is stable. The prepared super-hydrophobic silicon dioxide prepared via the preparation method is taken as a flatting agent, and can be used for providing paint with super hydrophobic performance; film forming coating particle arrangement is uniform; and luster is soft.
Owner:北京航天赛德科技发展有限公司

Transparent super-hydrophobic film and preparation method and application thereof

The invention relates to a transparent super-hydrophobic film and a preparation method and application thereof. The transparent super-hydrophobic film comprises a zinc oxide film and a cetyl trimethoxysilane film loaded on the surface of the zinc oxide film, wherein the transparent super-hydrophobic film is 500 nm to 1000 nm thick, the visible light transmittance is 50% to 90%, the contact angle with water is 165 degrees or above, and the rolling angle with water is 2 degree or blow. The preparation method comprises the following steps: 1, preparing a zinc film by using the RF magnetron sputtering system, and then annealing the zinc film to obtain the zinc oxide film; and 2, modifying the zinc oxide film obtained in the step 1 to obtain the transparent super-hydrophobic film. The transparent super-hydrophobic film is used in building facades, window glass, optoelectronic devices or optical elements. The surface of the transparent super-hydrophobic film is of a nano-rod structure, and the film has excellent super-hydrophobic property, light transmission property, self-cleaning property and anti-fogging property, and can improve light transmittance of glass surface on rainy, snowy and foggy days and reduce glass surface stains.
Owner:CHONGQING UNIV

Super-hydrophobic/super-oleophilic multilevel structure polyether sulfone oil-water separation membrane and preparation method thereof

The invention discloses a super-hydrophobic / super-oleophilic multilevel structure polyether sulfone oil-water separation membrane and a preparation method thereof and belongs to the technical field ofoil-water separation materials. The super-hydrophobic / super-oleophilic multilevel structure polyether sulfone oil-water separation membrane is prepared with two steps of a non-solvent induced phase method and a sol-gel method by taking polyether sulfone, silicon dioxide micro powder, tetraethyl silicate and hexadecyltrimethoxysilane as basic raw materials. The prepared super-hydrophobic / super-oleophilic multilevel structure polyether sulfone oil-water separation membrane has excellent super-hydrophobic property with a contact angle greater than 150 degrees, a rolling angle less than 10 degrees and an oil contact angle less than 10 degrees, has the characteristics of high porosity and high flux with the porosity reaching up to 79.59 percent and the flux reaching up to 2388.53L / h.m2, can effectively separate different kinds of water-in-oil emulsions as well as has the separation efficiency greater than 99 percent as for an emulsifier-free emulsion and greater than 98 percent as for an emulsifier-contained emulsion.
Owner:JILIN UNIV
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