118results about How to "Good oleophobic effect" patented technology

The invention belongs to the field of macromolecule super-amphiphobic materials and discloses a super-amphiphobic polymer and a super-amphiphobic surface. The super-amphiphobic polymer is a random copolymer composed of structural units shown as a formula I and a formula II. The super-amphiphobic surface is obtained by comprising the following steps of: pre-processing a substrate material; placinga micro-balloon in a fluorine-containing solvent, and ultrasonically dissolving to obtain a micro-balloon supernatant solution; adding the super-amphiphobic polymer, a hydrochloric acid tetrahydrofuran solution and water into the micro-balloon solution while stirring, placing the substrate material, and reacting for 5-24 h; and taking out the substrate material, washing by using the fluorine-containing solvent, methanol and water in turn, drying in vacuum, and obtaining the super-amphiphobic surface. The super-amphiphobic polymer disclosed by the invention can give good surface hydrophobic ability and oleophobic ability to the substrate. Because the polymer has the characteristics of the fluorine-containing polymer so that the polymer can be chemically bonded with the surface of the substrate, the obtained super-amphiphobic surface has good scrubbing resistant property and corrosion resistant property.

The present invention is an eye preparation comprising a hydrophobic composition adapted for use on a contact lens inserted into a patient's eye and having a viscosity of 1 to 15,000 centistokes. The composition includes a silicone polymer, fluorinated silicone polymer, fluorocarbon polymer, fluorinated alcohol, or perfluorinated polyether composition, singly or blended, adapted to coat at least a portion of a contact lens inserted in a patient's eye. Silicone polymers for use in the invention include dimethicone, cyclomethicone, and silicone gums.

The invention discloses oil-based anti-graffiti adhesion resistant paint and a preparation method thereof, and belongs to paint and a preparation method thereof. Components A of the paint comprise hydroxy acrylic resin, fluorocarbon resin, modified polydimethyl siloxane resin, polyacrylate modified organic silicon resin, smooth flow agent, flatting agent, antifoaming agent, drier, dibutyl tin laurate, butyl acetate and dimethyl benzene; components B comprise hexamethylene diisocyanate, butyl acetate and ethylene glycol monoethyl ether acetate; and the mixture ratio of the components A to the components B is 3:1. The invention also discloses the preparation method thereof. The paint has the advantages of good anti-graffiti adhesion resistant function, super-strong scrubbing resistance, easy cleaning, and quick and convenient construction, has limited harmful substances, and achieves national requirement.

The invention provides an experimental device researching influence of formation water with a high degree of mineralization on CO2 flooding. The experiment device comprises a gas cylinder, a core holding unit and a gas-liquid separating device. The gas cylinder is connected to a piston container, the top of the piston container is connected to a back-pressure valve and a pressure gage, the bottom of the piston container is connected to an ISCO pump, the pressure gage is connected to the core holding unit, the outlet end of the core holding unit is connected to the gas-liquid separating device, and the gas-liquid separating device is connected to an upper computer through a gas flowmeter. The back-pressure valve is connected to the back-pressure valve, the side face of the core holding unit is connected to a circular pressing pump and the suction lift is high, the outlet of the core holding unit is connected to the back-pressure valve, and the back-pressure valve is connected to a back-pressure pump. The designed device can compare changes of core permeability after and before CO2 flooding, porosity, pore structures, contents of core minerals, surface shapes of the cores, masses of the core and the recovery rates and research influence of CO2 flooding on reservoir physical property and development parameters.

The invention relates to a superhydrophobic oleophobic modification method of a porous membrane, and belongs to the technical field of separation membrane. According to the present invention, based on the self-cleaning bionic principle, fluorosilane-modified SiO2 nanoparticles having low surface energy are dispersed in an organic solution to prepare a uniform dispersion liquid, and a porous membrane is subjected to superhydrophobic oleophobic modification by using a dynamic filtration method to prepare the amphiphobic composite membrane having good stability, wherein the water contact angle of the amphiphobic composite membrane surface can achieve 167.3+/-1 DEG C, the contact angle of diiodomethane can achieve 145.9+/-1 DEG C, and the good amphiphobic property is presented; and method has characteristics of no requirement of complex equipment, simple and easy-performing process and short preparation period, and the prepared membrane has characteristics of high flux and good pollution resistance.

The invention discloses a bottom surface-integrated wear-resistant fluorosilicone-based super-amphiphobic coating, and a preparation method and application thereof. The preparation method comprises the following steps: 1) performing synergistic modification treatment on two or more nanoparticles to obtain modified blended particles; 2) adding the blended modified particles into a dispersing solvent, performing ultrasonic dispersion for 1 to 2 hours and then mechanically stirring; 3) adding a certain amount of tert-butyl acetate into fluoro-siloxane resin and performing shearing dispersion to obtain substrate material emulsion; 4) mixing the blended modified particle turbid liquid in the step 2 and the substrate material emulsion in the step 3, adding a coupling agent, heating, stirring anddispersing, and performing dispersion by a high-speed shearing dispersing machine to obtain super-amphiphobic coating; and 5) stirring the super-amphiphobic coating uniformly, spray-coating the surface of an object with the super-amphiphobic coating and drying at room temperature for 10 to 30 minutes to successfully prepare the wear-resistant integrated super-amphiphobic coating. The wear-resistant super-amphiphobic organic-inorganic hybrid coating is obtained by connecting a fluorine-silicon substrate and the blended modified particles through chemical grafting copolymerization reaction.

The invention belongs to the functional material field, relates to a magnetic bacterial cellulose membrane with lyophobic performance and its preparation method; especially relates to a magnetic bacterial cellulose membrane with 130-160 DEG of apparent contact angle and lyophobic performance; concretely relates to a magnetic bacterial cellulose membrane with lyophobic performance and the surface roughness of the bacterial cellulose membrane microfiber increased by the ferroferric oxide nano particles and its preparation method. The method comprises the following steps: attaching the ferroferric oxide nano particles to the bacterial cellulose membrane through an in-situ composite method; then generating a lyophobic monolayer membrane through a lyophobic reagent by a self-assembly technology to reach the lyophobic effect. Therefore, the bacterial cellulose membrane with lyophobic performance and permanent magnetism can be prepared by the method.

The present invention is an eye preparation comprising a hydrophobic composition adapted for use on a patient's eye and having a viscosity of 1 to 15,000 centistokes. The composition includes a silicone polymer, fluorinated silicone polymer, fluorocarbon polymer, fluorinated alcohol, or perfluorinated polyether composition, singly or blended, adapted to coat at least a portion of a patient's eye. Silicone polymers for use in the invention include dimethicone, cyclomethicone, and silicone gums.

The invention discloses high weather resistance environment-friendly cable fire-refractory coating and a preparation process thereof, belonging to the technical field of coating. The process adopts a base material, namely acrylic ester elastic emulsion, as a main film-forming substance, dopes high polymerization degree ammonium polyphosphate into the base material, has good film-forming effect and water resistance. The method particularly selects Number 70 chlorcosane and diantimony trioxide as synergistic flame-retardant to greatly improve the fire retardant performance, has low proportion of pigment and the base material, optimizes compatibility of a fire retardant system; the coating has weather resistance and has oil resistance for selecting fluorocarbon surfactant. The process improves water resistance and weather resistance of the coating, and adopts titanate coupling agent to improve the combining firmness of the pigment, the base material and cable base materials, and the weather resistance of the coating is further improved. Green and environment-friendly water is used as solvent to reduce cost, and as the solvent is removed in preparation or construction, the coating does not pollute the environment and not hurt the health of operators.

The invention discloses a method for preparing an anti-graffiti coating for a rail train carriage, wherein the coating is prepared by mixing a component A and a component B. The component A comprises the following components: 21 to 65 portions of hydroxy-fluoro-silicon modified acrylic resin, 15 to 40 portions of pigments and fillers, 1 to 10 portions of auxiliary agent, and 16 to 42 portions of organic solvent; and the component B comprises 20 to 36 portions of polyisocyanate prepolymer. When in use, the components A and B are mixed and stirred evenly according to a mass ratio of 2-7:1, and then the mixture is adjusted to proper viscosity for construction by using a spraying method. The surface of a lacquer film formed by the coating has the advantages of low tensile force, compact structure, high hardness, excellent anti-graffiti performance, abrasion resistance, scrub resistance, corrosion resistance and long service life.

The invention relates to a perfluoropolyether group-containing silane compound represented by a formula (1): Rf-X1-X2-NQkT2-k(1), and a preparation method therefor. The invention also relates to a perfluoropolyether group-containing silane compound shown in the description, and a preparation method therefor. The invention also relates to a perfluoropolyether group-containing silane compound represented by a formula (3) shown in the description, and a preparation method therefor. The perfluoropolyether group-containing silane compound can be used for a surface treatment agent so that the glassand other base materials processed by the surface treatment agent are excellent in anti-pollution, anti-fingerprint, scrape-resistant and wear-resistant performances, and the preparation methods for the compounds are simple in process, and are easy to operate and implement.

The invention discloses a multifunctional super-amphiphobic fabric and a preparation method thereof and application thereof. The preparation method of the multifunctional super-amphiphobic fabric comprises the steps of firstly, washing the fabric by using deionized water and ethanol, preparing an ethanol mixed solution of thiol siloxane and tetraethoxysilane, and putting a clean woven fabric intothe mixed solution to be soaked; and secondly, enabling the fabric to react for 5-120 min in the atmosphere containing ammonia, and putting the dried fabric into a tetrahydrofuran solution containinga photoinitiator and a fluorine-containing double-bond compound to perform click reaction. The preparation method of the multifunctional super-amphiphobic fabric, disclosed by the invention, has the advantages of short reaction time, low raw material consumption and simple operation; and the obtained fabric also has a self-cleaning function, an anti-fouling function and a function of separating oil and water of light and heavy oil.

The invention discloses aqueous anti-graffiti adhesion resistant paint and a preparation method thereof, and belongs to paint and a preparation method thereof. The paint consists of the following components by weight portion: 50 to 55 portions of emulsion, 2 to 4 portions of organic silicon emulsion, 14 to 16 portions of siloxane emulsion containing hydroxy functional group, 3 to 5 portions of hydrophobic organic silicon modified emulsion, 0.15 to 0.2 portion of smooth flow agent, 0.85 to 0.95 portion of film forming assistant, 0.1 to 0.2 portion of preservative, 0.1 to 0.2 portion of mildew preventive, 0.8 to 1 portion of ethylene glycol, 5 to 7 portions of hydrophobic agent, 0.1 to 0.2 portion of thickening agent, and 23 to 25 portions of deionized water. The invention also discloses the preparation method thereof. The paint has the advantages of good anti-graffiti adhesion resistant function, super-strong scrubbing resistance, easy cleaning, and quick and convenient construction, has zero formaldehyde, benzene and heavy metals, has low VOC, and is typical environment-friendly paint.

The invention belongs to the technical field of high voltage and insulation, and specifically relates to a method for fluorinating an insulator through use of a CF4 plasma. According to the method, an insulator is put in a reaction cavity, a mixture of CF4 and an inert gas is fed into the reaction cavity, the insulator is processed by a discharge plasma for 2-30min at room temperature and at low pressure of 0.01-0.1atm, so CF4 and the surface of the insulator are reacted with each other to generate a fluorinated layer. The method has the characteristic that the surface of a insulator is fluorinated through plasma processing in CF4, the surface flashover characteristic of insulators is improved, the electric strength of insulators is improved, the flashover voltage can be improved by about 50% to the maximum, the hydrophobic and oleophobic properties of the surfaces of insulators are improved, and the capability of insulators to prevent wet flashover and pollution flashover is improved.

The invention discloses high-performance wind-power generating facility coating prepared by taking organic fluorinated silicone modified elastic polyurethane-urea resin as substrate. The high-performance wind-power generating facility coating is prepared from component A and component B according to proportion. The wind-power generating facility coating has toughness, attrition resistance, high elasticity, excellent mechanical property, yellowing resistance, good colour retention, high ultraviolet resistance, high weather resistance, favorable and excellent electrical insulation, chemical stability, moisture resistance and freeze resistance. In addition, the wind-power generating facility coating has high performance and moderate cost and can strongly protect the wind-power generating facility, reduce the maintenance frequency and lower the purchasing cost of the wind-power generating facility, thereby having extremely high implementation value and social and economic benefit.

The invention discloses a hydrophobic/oleophobic fluorosilicone triblock polymer and a preparation method thereof. The structural formula of the polymer is as shown in the specification, in the structural formula, m is an integer from 10 to 50, n is an integer from 20 to 50, and a target polymer, namely, hexafluorobutyl methacrylate-b-polydimethylsiloxane-b-polyhexafluorobutyl methacrylate is synthesized by taking chloro-polydimethylsiloxane as a chain initiator under the co-catalysis of a catalyst CuCl and catalyst ligands 2,2'-dipyridyl and N-(2-pyridine methylene)-1-propylamine or tetramethylethylenediamine by using an atom transfer radical polymerization method. According to the hydrophobic/oleophobic fluorosilicone triblock polymer, microwave radiation heating is adopted, the operation is simple and convenient, the reaction condition is gentle, the molecular weight and the distribution of a reaction product can be controlled, and the synthesized hydrophobic/oleophobic fluorosilicone triblock polymer is excellent in hydrophobic and oleophobic property and is wide in application prospect in anti-flouring coating.

The invention provides a preparation method of a superhydrophilic and underwater-superoleophobic polyacrylonitrile-based oil-water separating membrane. The preparation method comprises the following steps of: adopting acrylonitrile monomer as a main-body raw material, and adopting an aqueous-phase precipitated polymerization method to synthesize a polyacrylonitrile-based copolymer; selecting a crystalline diluting agent, combining with a thermally-induced phase separation method to construct a polyacrylonitrile-based microporous membrane with a micro/nano structure and high flux on the surface, and preparing the superhydrophilic and underwater-superoleophobic microporous membrane by simple modification and grafting, wherein the use of an organic solvent is avoided in synthesis and modification of the process. The oil-water separating membrane prepared by the preparation method has the advantages of high porosity, good pressure resistance, permanent hydrophilia and excellent underwateroleophobic property; in addition, the adhesion to oil drops is very low, the pollution resistance is good, long-time and stable operation can be achieved, and high-efficiency separation from an oil-water mixture to oil-in-water type oil-water emulsion can be realized only by means of gravity or lower pressure.

The invention discloses a super oleophobic coating preparation method which comprises the steps of dispersing perfluoro caprylic acid into water, dropwise adding acetic acid saline solution of 0.1 to 0.3 mol/L, stirring for 1 to 4 hours, obtaining perfluoro caprylate, dispersing 0.1 to 0.3g of perfluoro caprylate into 10-20mL ethanol, fully stirring to obtain perfluoro caprylate dispersion liquid, and using a spray method to obtain a perfluoro caprylate super oleophobic coating. The raw materials of the preparation method are simple to prepare, sufficient in market goods supply and low in cost. The preparation method is easy to achieve. The super oleophobic coating is good in stability and excellent in oleophobic effect. The prepared super oleophobic coating can be applied to the outer surfaces of metal, oil conveying pipelines, water transportation tools and the like.

A preparation method and application of an oil-water separation net membrane are disclosed; the oil-water separation net membrane is prepared by ultrasonic cleaning of a 400 mesh red copper mesh in turn in acetone, absolute ethanol and deionized water, then immersion in hydrochloric acid to remove a surface oxide film, washing and drying by blowing with N2; immersion in a silver ammonia solution and drying. A micro-nano structure is formed on the surface of the copper mesh by impregnating the copper mesh with the oxide film removed in the silver ammonia solution, the water wettability of the surface of the structure is changed from hydrophobic to super-hydrophilic, and the oil wettability of the surface of the structure is changed from oleophobic to super-lipophilic, so that the oleophobicand hydrophilic function can be realized. Because of good oleophobicity and hydrophilicity, the oil-water separation net membrane can be successfully applied in oil-water separation. The oleophobic hydrophilic material has a very good application prospect in oil pollution prevention and oil sewage treatment.

The invention relates to a surface coating with both hydrophobicity and oleophobic property and a touch control panel coated by the surface coating. The surface coating comprises nano particles of chemical structures shown as formula (I): R1 may be halogen, hydrogen, alkyl, alkoxy, hydroxyl, alkenyl, alkyne, acyl, acryl, carboxyl, alkoxycarbonyl or aromatic oxycarbonyl, R2 may be a fluorine-containing group. The touch control panel comprises a conductive layer or an outer cover plate coated by the surface coating with both hydrophobicity and oleophobic property. When the surface coating is coated on the outer cover plate or the conductive layer of the touch control panel, the touch control panel is easy to clean, can resist greasy dirt, can prevent fingerprint generation, and has excellent anti-glare properties by virtue of the excellent hydrophobicity and oleophobic property of the surface coating.

The invention relates to a surface hydrophobing agent, particularly to an antifouling anti-scale nano easy-to-clean coating solution, and a preparation method and application thereof. The preparation method of the antifouling anti-scale nano easy-to-clean coating solution comprises the following steps: (1) dissolving a silane coupling agent or a titanate coupling agent and an active-group-containing perfluorinated organic matter in C2-C5 saturated monohydric alcohols, regulating the pH value to 2-4 by using an acidic catalyst, adding a curing agent, and performing a reaction at 40-60 DEG C to form a gel liquid; and (2) adding nano fumed silica into the transparent gel liquid obtained in the step (1), and performing uniform dispersion to obtain the antifouling anti-scale nano easy-to-clean coating solution. The antifouling anti-scale nano easy-to-clean coating solution provided by the invention is hydrophobic and oleophobic; low surface energy is achieved; the surface is easy to clean; and the coating solution is capable of resisting fouling and scales, is transparent and friction-resistant, and can be stored stably. The coating solution has the characteristics of favorable chemical stability and the like, and can be cured at normal temperature. The production technique is simple, and is suitable for large-scale production and application.

The invention relates to a polypropylene composite material with a lotus effect on greasy dirt. The polypropylene composite material is prepared from the following components in percentage by mass: 60-80% of polypropylene, 5-8%of nitrile rubber, 2-5% of a compatilizer, 2-8% of fluoride, 10-15% of nano silicon dioxide polymer composite particles, 0.2-0.5% of a composite anti-oxidant and 0.1%-0.3% of a composite nucleating agent. The invention further relates to a preparation method for the polypropylene composite material. The polypropylene composite material surface has relatively strong greasy dirt resistance and easy cleaning performance, and can form the lotus effect on the greasy dirt.