235results about How to "Excellent superhydrophobicity" patented technology

The invention discloses a highly-wear-resistant super-hydrophobic composite coating and a preparation method thereof. The preparation method includes the steps that the surface of a base is coated with hydrophobic resin primer containing compound micropowder through a brush coating or spray coating method, the surface of the resin primer is sprayed with hydrophobic organic/inorganic hybrid nano-paint after semi-curing, and the highly-wear-resistant super-hydrophobic composite coating is obtained after complete curing. The highly-wear-resistant super-hydrophobic composite coating and the preparation method thereof have the advantages that equipment and the process are simple, operation is easy and cost is low, and have the industrial mass production prospect. The prepared super-hydrophobic composite coating can be applied to various hard/soft bases such as glass, copper, aluminum, stainless steel, exterior wall tiles, wood, paper and cloth and can bear damage of external force such as sanding.

The invention discloses an environment-friendly high-transparency super-hydrophobic coating and a preparation method and application thereof in the preparation of a transparent durable super-hydrophobic coating layer. The environment-friendly high-transparency super-hydrophobic coating is mainly prepared from the following materials: 30 to 50 parts of volatile organic solvent, 5 to 10 parts of water, 0.1 to 2 parts of hydrophobic micro-nano particles, 0.1 to 1 part of hydrophobic resin and 0.01 to 0.1 parts of curing agent. Compared with the prior art, the preparation method for the coating layer prepared by the invention has the advantages of simplicity, easiness in operation, low equipment requirement, environment-friendliness, no fluorine and low cost, and is favorable for mass industrial production, and the prepared coating layer is multipurpose, is not limited by the varieties and sizes of base materials, can be constructed on a large area, and has great commercial value in termsof self-cleaning, corrosion resistance, mouldproofness, fabric treatment and oil and water separation.

The invention discloses a method for preparing a styrene grafted silicon dioxide superhydrophobic thin film, which comprises: firstly, adding tetraethoxysilane into mixed solution of a catalyst and an alcohol solvent to obtain nano silicon dioxide spheres by reaction; secondly, adding the nano silicon oxide spheres into the alcohol solvent, and adding a silane coupling agent and the catalyst to obtain vinyl modified nano silicon oxide spheres; and finally, adding the vinyl modified nano silicon oxide spheres into a benzene or ketone organic solvent, adding an initiator and a styrene monomer in turn to obtain the styrene grafted silicon dioxide spheres, dispersing the styrene grafted silicon dioxide under ultrasonic waves, and preparing the styrene grafted silicon dioxide by using an organic or inorganic material as a substrate and by a coating method. The preparation process is simple and high in repeatability, the cost is low, and the promotion is more convenient.

The invention provides a super-durable and super-hydrophobic textile and its making method. The method comprises the following steps: carrying out alkaline treatment of a terylene fabric to make the surfaces of micro-sized fibers have a nanometer rough structure and make the fabric have a micro-nano structure rough surface, and carrying out low surface energy treatment of the fabric by a mixed solution comprising long-chain alkyl silane and a polydimethylsiloxane compound to obtain the super-durable and super-hydrophobic textile. The static contact angle of water drops on the surface of the terylene fabric prepared in the invention is greater than 150DEG, the water drops can easily roll on the surface of the fabric, and the textile still has an excellent super-hydrophobic performance after strong friction, long-time washing, and long-time immersion in a strong acid, a strong alkali and a strong electrolyte solution.

The invention provides a resin matrix composite with a super-hydrophobic bionic surface and a preparation method of the resin matrix composite. The method comprises steps as follows: the surface of a matrix of the resin matrix composite is polished until the surface turns white; the matrix of the resin matrix composite is processed through ultrafast laser, and a microstructure is formed on the surface; a first coating is sprayed on the microstructure surface of the matrix of the resin matrix composite through a pneumatic type paint spray gun to form a bonding layer, a second coating containing nanosilicon dioxide particles is sprayed to form a surface hydrophobic function layer, and the resin matrix composite with the super-hydrophobic bionic surface is obtained. The preparation method is simple to operate and facilitates production, the prepared resin matrix composite with the super-hydrophobic bionic surface can allow water drops to freely slip off, and the real self-cleaning super-hydrophobic function is realized.

The invention provides a water-based superhydrophobic coating and a preparation method thereof. The coating is prepared from the following raw materials in percentage by mass: 1-20 percent of hydrophobic resin, 10-90 percent of good solvent of hydrophobic resin, 0.01-1 percent of an additive, 0.1-10 percent of nano-particles and the balance of water, wherein the additive is a curing agent or adhesive resin; the hydrophobic resin is one or more of organic silicon resin, fluorocarbon resin, fluorinated modified epoxy resin and fluorinated modified polyurethane; and the nano-particles are one ormore of fumed silica, nano-titanium dioxide, nano-alumina, fluorine-modified nano-silicon dioxide and alkyl modified nano-silicon dioxide. The water-based superhydrophobic coating is easily availablein raw materials and simple in preparation condition, and can be used for treating various substrates by a simple dip-coating or spraying process so as to obtain a superhydrophobic surface by curing.

The invention discloses a preparation method of a high strength superhydrophobic coating; nano particles or nano and micron mixed particles are dissolved in an organic solvent, materials containing low surface energy functional groups and a silane coupling agent are used for low surface energy treatment of the particles under the effect of a catalyst; acrylic resin is dissolved in the organic solvent, then the treated particles are added, and under the effect of a curing agent, the particles are mixed and stirred for even dispersion, and then is sprayed to prepare the superhydrophobic coating. According to the method, commonly used fluororesin and other low surface energy materials are used, the superhydrophobic performance can be further improved by repair of unfinished hydrophilic groups of the materials in the components, the fluororesin can be used for modifying silica single molecules and the like to increase the durability of the superhydrophobic performance, the acrylic resin with high mechanical properties, good adhesion and good weatherability is used as matrix resin, and then chemically modified particles are bound to the matrix resin to prepare the coating with better mechanical strength.

The invention discloses a preparation method of a rubber-based composite material with the super-hydrophobic surface. The preparation method comprises the following steps: firstly placing an aluminum sheet into chemical corrosive liquid to corrode for 2-120 minutes, washing the corroded aluminum sheet by deionized water, drying for standby; placing a mixed rubber compound onto the corroded aluminum sheet, then using a press vulcanizer to vulcanize or tablet the sheet; separating the cooled aluminum sheet from the rubber; brush coating an ethanol solution of a low surface energy substance on the rough surface of the separated rubber-based composite material, taking reaction for 1-36 hours at the temperature of 40-200 DEG C, and at last obtaining the rubber-based composite material with the micro-nano coarse structure super-hydrophobic surface. The surface water contact angle of the super-hydrophobic rubber-based composite material is more than 150 degrees; the rolling angle is smaller than 8 degrees; the super-hydrophobic rubber-based composite material has excellent comprehensive properties such as high elasticity, high abrasion resistance and high strength, is simple in preparation technology and beneficial to large-scale production and application.

The invention provides an in-section multi-cluster fracturing transformation nonlinear self degradation temporary plugging agent and a preparation method thereof. The in-section multi-cluster fracturing transformation nonlinear self degradation temporary plugging agent is prepared from the following substances in percentage by weight: 80 to 90 percent of body, 2 to 5 percent of initiators, 2 to 5percent of lubricating agents, 5 to 10 percent of shaping agents, 0.2 to 0.8 percent of enhancing agents and 1 to 3 percent of degradation accelerating agents, wherein the body is a mixture formed bypolyglycolide, polylactide-glycolide and polyvinyl alcohol; bonding cannot occur after the water meeting at the normal temperature; pumping injection is facilitated; the degradation in a limited timeis slow; the dissolution speed at the reservoir temperature and the time show the nonlinear relationship; the technical requirements of multi-cluster fracturing construction in the horizonal well section can be met; the micro expansion capability is realized; the intensity at the later plugging stage in a crack is improved; the slow degradation can also be realized under the condition of the medium environment change; the harm to the reservoir is small. Through the combination of an intermittent stirring reactor and a double-screw extruding machine, the influence of the temperature change of the production process on the temporary plugging agent product is improved; the product physical and chemical property index is more stable.

The invention provides super-hydrophobic cement and a preparing method and application thereof. The preparing method comprises the steps that cement powder, fine sand and hydrophobic modifier are added into ethyl alcohol in sequence under low-speed mechanical stirring conditions, and then high-speed stirring is conducted to obtain a modified cement fine sand solution; the modified cement fine sandsolution is filtered, dried and smashed to obtain super-hydrophobic cement fine sand mixed powder; under low speed mechanical stirring conditions, the super-hydrophobic cement fine sand mixed powderis put into an aqueous solution containing surfactant, dispersing agent and fluoroalkyl silane, and then mechanical stirring is conducted to form the super-hydrophobic cement. According to the method,a coating does not need to be prepared additionally, the technology is simple, the operation is simple, the super-hydrophobic cement is suitable for large-scale preparation and production, the overall super-hydrophobic property of obtained concrete is good, the inside is still not super-hydrophobic after abrasion, the super-hydrophobic property is not easily damaged, and the super-hydrophobic cement is applicable to various concrete application places and has a good prospect.

The invention relates to an aluminum product surface super-hydrophobic film and a making method thereof. The method comprises the following steps: 1, placing an aluminum product in an electrolyte as an anode, and anodizing under a current density of 0.1-0.5A.cm<-2> for 1-20min to obtain an anodized aluminum surface; and 2, immersing the anodized aluminum surface in an ethanol solution containing silicon fluoride for at least 1min, carrying out heat treatment on the obtained workpiece at 100-200DEG C for 5-40min, and naturally cooling to obtain the aluminum product surface super-hydrophobic film. The making method of the super-hydrophobic surface has the advantages of simplicity, low cost and easy industrialization. The super-hydrophobic surface made in the invention has a contact angle exceeding 150DEG, a roll angle of below 10DEG and stable hydrophobicity. The surface has the advantages of very good super-hydrophobic function, very good automatic cleaning function, excellent wear resistance and excellent corrosion resistance.

The invention discloses a preparation method of multifunctional organic silicon elastic aerogel. The preparation method includes the steps: taking tri-functional organic silane and bi-functional organic silane as co-precursors, taking nano-particles as functional factors, and performing normal-temperature hydrolysis to obtain organic silane sol under existing of a trace catalyst and a surface active agent in an aqueous-phase system; performing reaction at a certain temperature to convert the sol into gel, and separating the sol and the gel to obtain organic silane hydrogel; washing the organicsilane hydrogel by water and/or ethyl alcohol, drying the washed organic silane hydrogel in normal pressure to obtain the multifunctional organic silicon elastic aerogel. The prepared organic siliconelastic aerogel has excellent compressive strength, elasticity and stability, further has various functionalities such as super-hydrophobicity, super-amphiphobic performance, low heat conductivity and high electric conduction and is widely applied to the fields such as heat insulation, oil and water separation, lithium batteries and flexible electronic devices. The preparation method of the aerogel is low in cost, high in efficiency, green and environmentally friendly, and mass production of the organic silicon elastic aerogel is facilitated.

The invention provides a preparation method of dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane, which comprises the following steps: dripping each 1mol of dodecafluoroheptyl-propyl-trimethoxylsilane into 250-10000ml of organic solvent under the condition of 0-40 DEG C, carrying out hydrolysis condensation reaction under the action of acid catalysis, carrying out the reaction for a certain period of time, and carrying out concentration, filtration, drying and other steps for preparing dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane (dodecafluoroheptyl-propyl POSS) crystals. The invention further provides the dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane. The method has simple and easy process, low cost, high yield and high product purity, and the prepared dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane product has excellent hydro-oleophobic performances, heat resistance, flame retardance and low dielectric constant performance, and can be widely applied in the fields of polymer modification, hydro-oleophobic interface materials, flame retardants, low dielectric constant materials, building coatings, space materials, medical materials, light-emitting materials, liquid crystal materials and the like.

The invention discloses a method for preparing an ice-coating resistant zinc oxide coating on the copper surface, and aims at improving the adhesive power of zinc oxide and a copper sheet through dopamine hydrochloride. The method is that zinc oxide on the copper sheet surface is treated by fluorination so as to improve a contact angle and a rolling angle as well as prolong the icing time; the water heating method is carried out; the sol-gel method is performed to prepare a zinc oxide solution; dopamine hydrochloride is added to prepare an zinc oxide seed layer on the copper sheet surface; the water heating method is carried out to control to reach a certain of temperature and time after sintering at a certain of temperature; after sintering at a certain of temperature, the low-surface-energy substance is utilized to process, and the static contact angle and icing time of the surface are measured. The method is low in production cost, simple in preparation, small in requirements on reaction devices, mild in reaction conditions, free of environmental pollution, and suitable for mass production.

The invention relates to a self-cleaning coating material with persistent super-hydrophobicity and a preparation method thereof. The content of titanium dioxide nanoparticles is 100 to 150 percent ofthe content of polydimethylsiloxane. The super-hydrophobic coating disclosed by the invention has the following advantages: (1) the coating preparation method and operating equipment are simple, a spraying method is adopted to prepare the super-hydrophobic coating, and thereby mass production is benefited; (2) applicability is wide, and the self-cleaning coating material is applicable to various solid substrates, including metal, glass, plastic, rubber and the like, and can be used as coating for external walls of buildings, anti-rusting surface coating for metal and the like; (3) with good durability, the self-cleaning coating material still has super-hydrophobicity after being irradiated by an ultraviolet lamp (wavelength is 365 nm) for seven days or placed outdoors for three months; (4)not only can water drops be utilized to bring away dust falling on the surface, but also the photocatalytic property of titanium dioxide can degrade oily organic pollutant on the surface, and therebythe coating has long super-hydrophobicity.

The invention provides a super-hydrophobic aluminum material/zinc material and a preparation method and application thereof. The method comprises the following steps of sequentially washing the aluminum material/zinc material in acetone and alcohol through an ultrasonic way to obtain a part to be processed; placing the part to be processed in the previous step in the water at the temperature of 50DEG C to 100DEG C for 0.5 to 4h; and further carrying surface energy substance decoration treatment for the part to be processed obtained in the previous step. The super-hydrophobic aluminum material prepared by the method has a nano flaky silk-shaped surface structure, the prepared super-hydrophobic zinc material has a nano compact coarse protruded surface structure, a contact angle of water drop on the surface of the aluminum material/zinc material is 140DEG to 170DEG, and a rolling angle is less than 10DEG C. The method is simple in process, good in repeatability and low in cost. The super-hydrophobic aluminum material/zinc material is applicable to the outer wall of a pipeline, the surface of ships or the outer wall of an electric wire, capable of effectively improving the hydrophobicity, self-cleaning property and anti-freezing property and prolonging the service life.

The invention discloses a multifunctional super-hydrophobic textile finishing agent, and a preparation method and applications thereof. The preparation method comprises following steps: a precursor of an oxide sol and a graphite oxide aqueous dispersion are dispersed in deionized water, an anionic surfactant is added, a catalyst is added for hydrolysis and condensation reaction after uniform dispersion so as to obtain a mixed reaction system, and the mixed reaction system is heated to 30 to 50 DEG C for 3 to 12h of reaction so as to obtain a hydrosol; a functional agent is added into the hydrosol so as to obtain the multifunctional super-hydrophobic textile finishing agent. The multifunctional super-hydrophobic textile finishing agent is safe, is friendly to the environment, is excellent in effect, is used for super hydrophobic and multifunctional finishing of textile, is capable of providing textile with six functions including super-hydrophobic property, flame resistance, antibacterial property, stain resistance, ultraviolet resistance, and skin protection performance, is capable of eliminating adverse effect of the plurality of functions, improving the synergistic effect; the preparation method is simple and convenient, is easy to control, and is suitable for large scale production.

The invention relates to a hydrophobic and oleophilic-hydrophilic underwater oleophobic thin oil film as well as an adjustment and control method, a preparation process and application thereof. The preparation process comprises the following steps: taking hyperbranched polyurethane and perfluorinated iodine octane-modified silicon dioxide nano particles as raw materials and preparing a function-adjustable and controllable oil/water separation thin film by utilizing electrostatic spinning. The oil/water separation thin film is prepared by controlling the proportion of the silicon dioxide nano particles to the hyperbranched polyurethane; under electrostatic spinning conditions, a fiber diameter and film thickness-controllable filter thin film is obtained, and a relation between a fiber structure and the oil and water separation property is established. When the thin film is subjected to oxygen plasma treatment, the hydrophobic property of the thin film is changed, and the thin film is converted into the hydrophobic underwater oleophobic thin film through the hydrophobic and lipophilic properties, so that a water-in-oil emulsion and an oil-in water emulsion can be separated; due to the characteristics of low surface energy of a fluorocarbon chain and the property of low polyurethane glass transition temperature, when the temperature is higher than the glass temperature of a polymer, a molecular chain segment containing the hyperbranched polyurethane moves, and the fluorine chain is migrated to the surface, so that the function adjustment and control properties of the thin film are realized.

The invention provides a fumed silica modified acrylate waterproof paint. The fumed silica modified acrylate waterproof paint comprises, by weight, 40 to 50 parts of a polymer emulsion, 20 to 30 parts of modifying fumed silica, 0.2 to 0.6 part of a wetting dispersant, 0.2 to 0.5 part of an antifoaming agent, 0.1 to 0.2 part of a preservative, 0.2 to 0.5 part of a thickening agent, 5 to 10 parts of kaoline, 20 to 30 parts of heavy calcium carbonate powder, 2 to 5 parts of titanium dioxide powder, and 1 to 5 parts of water. Acrylate waterproof paint water resistance is improved greatly, water absorption rate is reduced, waterproofing is realized at 0.3MPa in 60min, and water absorption rate is zero.

The invention discloses a nano SiO2 composite polysiloxane modified water-based terpenyl EP/PU (Epoxy Resin/Polyurethane) superhydrophobic self-cleaning polymer and a preparation method thereof. The preparation method comprises the following steps of modifying nano SiO2 into hydrophobic nano SiO2 by using trimethylethoxysilane, and then adding the modified hydrophobic nano SiO2 into a compounded system of polysiloxane modified terpenyl epoxy resin polyol aqueous dispersion and polyisocyanate under the assistance of stirring and ultrasonic waves, crosslinking and curing to obtain the nano SiO2 composite polysiloxane modified water-based terpenyl EP/PU superhydrophobic self-cleaning polymer. The surface static water contact angle of a polymer coating is greater than 150 degrees and a rolling angle of the polymer coating is smaller than 10 degrees. The preparation method disclosed by the invention is simple and convenient; a superhydrophobic coating of which the surface has a micro-nanostructure can be obtained by a spraying process; the nano SiO2 composite polysiloxane modified water-based terpenyl EP/PU superhydrophobic self-cleaning polymer is good in hydrophobicity and lasting in hydrophobic effect, and can be applied to the fields of surface self-cleaning coatings and the like.

The invention discloses a preparation method for a composite material high-adhesiveness super-hydrophobic film. Firstly, tetraethoxysilane is added in mixed liquid of catalyst and alcohol solvent for reacting to obtain nanosilicon dioxide; then, the nanosilicon dioxide is added in benzene solvent, and is added with silane coupling agent containing amino to prepare amino-modified nanosilicon dioide; multiwalled carbon nanotube, thionyl chloride and N, N-dimethylformamide are put in a single-opening flask for countercurrent reacting to prepare multiwalled carbon nanotube after acylating chlorination; and finally, the amino-modified nanosilicon dioide, the multiwalled carbon nanotube after the acylating chlorination and the stearic acid are added in the benzene solvent for countercurrent reacting to prepare a stearic acid-grafted multiwalled carbon nanotube/nanosilicon dioxide composite material; after the composite material is ultrasonically dispersed, an inorganic or organic material is adopted as substrate to prepare the composite material high-adhesiveness super-hydrophobic film through the coating method. The method has the advantages of simple preparation process, good repeatability, low cost and convenience for promotion and application.