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116results about How to "Improve superhydrophilicity" patented technology

Natural super-hydrophilic porous TiO2/SiO2 composite thin film and preparation method thereof

The invention relates to a natural super-hydrophilic porous TiO2 / SiO2 composite thin film and a preparation method thereof. The preparation method comprises the following steps of: adopting a sol-gel method and respectively taking tetrabutyl titanate and ethyl orthosilicate as precursors to prepare TiO2 sol and SiO2 sol; calculating according to the molar fraction, compounding through taking the addition quantity of the SiO2 sol as 1-50 percent of total contents of SiO2 and TiO2 to obtain TiO2 / SiO2 composite sol; and coating the prepared composite sol on a substrate material, airing, calcining and cooling to obtain the super-hydrophilic thin film. The natural super-hydrophilic porous TiO2 / SiO2 composite thin film and the preparation method thereof have the beneficial effects that the thin film prepared by the method has the double effects of phase separation-induced developed hole structure and SiO2 compounding, the aperture of the thin film is within the scope of 100 nm-6 mum, the thickness of the thin film is within the scope of 200 nm-20 mum, a contact angle of the surface of the thin film with water is below 5 degrees, and the self-cleaning, antifogging and antibacterial functions are optimal.
Owner:SOUTH CHINA UNIV OF TECH

Low-temperature prepn process of self-cleaning nano Tio2 glass

The present invention relates to a low temperature treating process of self-cleaning TiO2 nanoglass. By using silica and anatase type nanosol as basic components and through pulling process, film is formed on the surface of glass plate. The film is dried at room temperature and cured or treated at temperature below 300 deg.c and cooled naturally. The prepared self-cleaned glass has excellent photocatalytic property, superhydrophilic property, high and homogeneous transparency. The said process is simple, low in cost and suitable for industrial production.
Owner:FUDAN UNIV

Preparation method of graphene foam-polydopamine composite membrane, product prepared with preparation method and application of product

The invention discloses a preparation method of a graphene foam-polydopamine composite membrane, a product prepared with the preparation method and an application of the product. The preparation method comprises steps as follows: (1) preparation of graphene foam-polydopamine: the pH value of a graphene oxide solution is adjusted, dopamine hydrochloride is added, a precursor solution is obtained and subjected to a hydrothermal reaction, and graphene foam-polydopamine is obtained; (2) preparation of the graphene foam-polydopamine composite membrane: graphene foam-polydopamine is added to N,N-dihydroxyethylglycine and mixed with a temperature-sensitive polymer, the mixture is stirred and subjected to vacuum filtration, and the temperature-sensitive graphene foam-polydopamine composite membrane is obtained. The graphene foam-polydopamine composite membrane prepared through improvement of overall process design, reaction conditions of steps and the like of a key preparation process has good temperature sensitivity and excellent super-hydrophilic property and underwater super-lipophobicity and is very applicable to oil-water separation.
Owner:HUAZHONG UNIV OF SCI & TECH

Photo-cured medical catheter hydrophilic lubrication coating and preparation method thereof

The invention discloses a photo-cured medical catheter hydrophilic lubrication coating and a preparation method thereof. The hydrophilic lubrication coating comprises a bottom coating and a lubrication coating, wherein the bottom coating is attached to the surface of an instrument, and the lubrication coating is attached to the bottom coating. The bottom coating comprises 1-10 parts of polyester acrylate, 50-90 parts of solvents, 0.5-5 parts of photoinitiators, 0.5-2 parts of wetting agents and 0.5-5 parts of reactive diluents; the lubrication coating comprises 1-10 parts of water soluble macromolecules, 1-5 parts of crosslinking macromolecules, 0-1 part of photoinitiators, 0.1-1 part of surfactants and 50-98 parts of mixed solvents. The preparation method of the hydrophilic lubrication coating is simple and easy in operation, substance residues caused by complicated high-temperature chemical reaction are avoided, the cured coating forms a crosslinking structure, has good adhesion on the surface of a medical catheter and has excellent and lasting lubricity in an aqueous medium, the friction coefficient of the surface of the medical catheter is reduced, and harm to human tissues andadhesion of macromolecules in blood are decreased.
Owner:ORBUSNEICH MEDICAL SHENZHEN CO LTD

Organic-inorganic composite hydrophilic coating

The invention relates to an organic-inorganic composite hydrophilic coating which is composed of, by weight, 5-10 parts of a silicon hydroxyl contained acrylic ester emulsion, 10-40 parts of silica sol, 0.5-5 parts of a hydrophilic modified additive, 0-5 parts of other additives and 30-50 parts of deionized water. The silicon hydroxyl contained acrylic ester emulsion is formed by subjecting raw materials of methyl methacrylate, butyl acrylate, hydroxyethyl acrylate, methacrylic acid, N- hydroxymethyl acrylamide, unsaturation organo-siloxane, a compound emulsifier, a ammonium persulfate initiator, water and a potential of hydrogen (PH) conditioning agent to emulsion polymerization. Compared with paint films of conventional water-based dual-component finishing varnish and solvent type fluorocarbon finishing varnish, the pain film of the organic-inorganic composite hydrophilic coating has a super-hydrophilicity performance and a hydrophilic self-cleaning effect and is safe, environment-friendly, obvious in contamination resistant effect, and capable of well protecting the wall surface of a building and reducing maintenance expenses.
Owner:CNOOC CHANGZHOU PAINT & COATINGS IND RES INST +2

Process for preparing self-cleaning titanium dioxide photo-catalytic coating liquid

InactiveCN1631999APhotocatalytic superhydrophilic effectImprove self-cleaning effectCoatingsVolumetric Mass DensityTitanium tetrachloride
The invention relates to a method for producing a self-cleaning TiO2 photochemical catalysis coating, blowing to photochemical catalysis material chemical manufacturing technical field. Use TiCl4 as the row material,add into muriatic acid solution with their ratio being 1.3g / cm2 and Ti cintent bing 2.86mol / L use Ti in each liter of TiO4 muriatic acid solution as standard to express its gram molecule density;drop it into the four-moth glass container with back floing cooling pipe and agitating blade with 500ml water without ion in it,increase the temperature while heat it,with the temperature being 55-95deg.C and the stirring speed being 200 rmp;when approaches the boiling point,open the back flowing cooling water and keep the temperature for 1h,generating ice-cream sol which is the diluted by alcohol water solution to acquire sol containing particle content (2%), add into organic silicon sticker, by stirring averagely the product is made.
Owner:SHANGHAI UNIV

Method for preparing super-microporous flexible carbon cloth and product thereof and application

The invention discloses a method for preparing super-microporous flexible carbon cloth.Carbon cloth serves as a raw material and is calcined at high temperature in activators, and the super-microporous flexible carbon cloth is obtained.The calcination temperature is 400-1,500 DEG C, and calcination time is 1-24 h.The activators are nitrogen and oxygen, and the volume ratio of nitrogen to oxygen is 100:(0.5-2).The invention further discloses the super-microporous flexible carbon cloth and application of the super-microporous flexible carbon cloth to a flexible all-solid-state capacitor and water electrolysis hydrogen making.According to the technical scheme, a calcination method is utilized for the first time, no reagent is needed, and the synthesis method is simple, environmentally friendly and beneficial for large-scale production; the prepared super-microporous flexible carbon cloth has a large specific area, high-proportion micropores, good electric conductivity and good flexibility and super hydrophilicity.
Owner:ZHEJIANG UNIV

Flat-plate heat tube with nanometer structure

ActiveCN104634148AImprove temperature uniformityEnhanced boiling heat transfer capabilityIndirect heat exchangersHydrophobic surfacesEngineering
The invention discloses a flat-plate heat tube with a nanometer structure. The flat-plate heat tube with the nanometer structure comprises a bottom plate, a top plate and a supporting plate, wherein the supporting plate is positioned between the top plate and the bottom plate; the bottom plate, the top plate and the supporting plate are hermetically connected to one another to form a hollow closed cavity; a body of the bottom plate which serves as an evaporation surface of the flat-plate heat tube is a brass sheet; a copper oxide film which has a nanometer structure, has a super-hydrophilic property and is formed by electrochemical displacement covers the inner surface of the bottom plate; a body of the top plate which serves as a condensation surface of the flat-plate heat tube is a brass sheet; an electro-nickelling layer which has a nanometer structure and has a super-hydrophobic property covers the inner surface of the top plate; and small through holes are formed in a side surface of the supporting plate and are connected with capillary tubes. The evaporation surface and the condensation surface of the flat-plate heat tube are subjected to super-hydrophilic and super-hydrophobic surface modification, the evaporation speed and the condensation speed are increased, the heat exchange performance of an evaporation region and the heat exchange performance of a condensation region are improved, the thermal homogeneity is high, working medium is guided to return, and the working medium returning speed is increased, so that the whole heat exchange capability is improved.
Owner:GUANGDONG UNIV OF TECH

Nano phase separation self-cleaning glaze of ceramic exterior wall brick

InactiveCN101417892AGood superhydrophilicityImprove photocatalytic efficiencySlagPhotocatalysis
The invention relates to a ceramic glaze, in particular to a nano phase separating self-cleaning glaze of ceramic out-wall bricks. The material composition (wt percent) is as follows: 26 to 32 percent of glaze quartz, 0 to 3 percent of glaze feldspars, 3 to 4 percent of Suzhou clays, 30 to 46 percent of high titanium blast furnace slag and 20 to 38 percent of FT818 frits; the chemical composition (wt percent) is as follows: SiO2: 54.22 to 63.16 percent, Al2O3: 8.22 to 11.18 percent, Fe2O3: 0.24 to 0.36 percent, TiO2: 3.16 to 4.69 percent, CaO: 10.11 to 13.24 percent, MgO: 4.28 to 5.90 percent, ZnO: 3.30 to 5.61 percent, BaO: 0.20 to 0.40 percent, K2O: 1.41 to 2.35 percent, Na2O: 0.52 to 0.97 percent, Li2O: 0.20 to 0.39 percent, B2O3: 0.45 to 1.76 percent , and ZrO2: 0.41 to 1.72 percent. After the glaze of is fired, nanometer protuberances and nanometer TiO2 clusters form on the surface of glaze, and the ceramic glaze is good in super-hydrophilic property, high in photocatalysis efficiency, good in anti-soil effect of the glaze surface and has self-cleaning function; and especially the high titanium blast furnace slag is taken as the main material, thus realizing waste utilization and decreasing costs.
Owner:NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY

TiO2-SiO2 bi-component nano-grade fiber and preparation method thereof

The invention discloses TiO2-SiO2 bi-component nano-grade fiber and a preparation method thereof. According to weight proportions, 4 to 10 parts of strong ammonia water is added to 100 to 150 parts of absolute alcohol, the mixture is stirred for 2 to 8 hours, and 4 to 10 parts of tetraethoxysilane is added to the mixture, such that a solution is prepared; TiO2 nano-grade fiber is prepared with a static electricity spinning technology; the TiO2 nano-grade fiber is added to the solution while stirred under a temperature of 20 to 60 DEG C; the mixture is subject to a reaction for 6 to 8 hours, the product is filtered and washed; the product is subject to a drying treatment for 12 to 24 hours under a temperature of 70 to 100 DEG C, and is heated to a temperature of 500 to 1200 DEG C with a heating rate of 1 DEG C / min; the temperature is maintained for 4 to 8 hours, such that the TiO2-SiO2 bi-component nano-grade fiber is obtained. According to the invention, TiO2 is a main component of the nano-grade fiber, particle-shaped SiO2 extrusions are composed on the surface of the TiO2 nano-grade fiber. SiO2 and TiO2 are combined through chemical bonds. With the nano-grade fiber, property advantages of TiO2 and SiO2 nano-grade fiber are combined. The preparation method has advantages of simple process, mild condition, easy control, wide application range, and the like.
Owner:SUZHOU UNIV

Preparation method of poly(phenol-amine) superhydrophilic particulates

The invention discloses a preparation method of poly(phenol-amine) superhydrophilic particulates. The preparation method of the poly(phenol-amine) superhydrophilic particulates comprises the following steps: firstly adding a micro-nano material into a solution of polyphenol and polyamine, reacting for a period of time, and separating, so that the superhydrophilic particulates are obtained. The preparation method of the poly(phenol-amine) superhydrophilic particulates is simple in process, easy to operate, controllable in technology, mild in conditions, good in repeatability, low in cost and convenient for popularization and application, the obtained poly(phenol-amine) superhydrophilic particulates have good superhydrophilic performance, can be applied to various materials and have a broad application range.
Owner:QILU UNIV OF TECH

Medical beta-titanium alloy composite material with osteogenesis inducing activity and preparation method thereof

The invention relates to a medical beta-titanium alloy composite material with osteogenesis inducting activity and a preparation method thereof. The material comprises a base material and a titanium oxide nano-tube array layer, which is generated in-situ and attached to the surface of the base material and contains BMP-2 cell growth factors. The base material is a medical beta-titanium alloy of the Ti-25Nb-6Zr-xMo family, wherein the x is between 2 and 5. The diameters of nano-tubes, which are generated in-situ on the alloy surface, are between 30 and 50 nm, the lengths of the nano-tubes are between 200 and 300 nm, and the nano-tubes are arranged in arrays and perpendicular to the surface of the titanium alloy. The medical beta-titanium alloy composite material has ultra-low elastic modulus and is capable of forming better interface mechanic matching with the bone tissue. So osteoblasts grow rapidly along the wall on the surface of medical beita-titanium alloy whose surface is loaded with titanium oxide nano-tube biological composite material containing BMP-2, and proliferate obviously. The composite material has a good effect on inducing osteoblasts to proliferate to form bone matrix and can be used to bone replacement or repairing.
Owner:HEBEI UNIV OF TECH

Method for preparing aluminium alloy-loaded titanium dioxide nano tube film

InactiveCN102127771AExcellent photocatalytic sterilization performanceGood wear resistanceCatalyst activation/preparationIonAnode oxidation
The invention discloses a method for preparing an aluminium alloy-loaded titanium dioxide nano tube film, belonging to the field of nano films. The method comprises the following steps of: (1) carrying out electrochemical polishing on an aluminium alloy with perchloric acid and an ethanol solution; (2) carrying out anode oxidation treatment on the aluminium alloy, wherein an electrolyte solution is mixed solution of H3PO4 or H3PO4 and H2SO4; (3) taking an aluminium oxide nano tube array prepared by anode oxidation as a template, cleaning with deionized water and drying; (4) preparing liquid phase deposition solution (NH4)2TiF6; (5) placing the anode aluminium oxide nano tube array template in the liquid phase deposition solution to be subjected to standing and deposition, cleaning with the deionized water after the template is taken out, and drying; and (6) carrying out heat treatment on the deposited film at the temperature of 400-600 DEG C and insulating for 2-4 hours, and cooling to room temperature along with a furnace, thus the film is prepared. The TiO2 nano tube film prepared by the invention has high abrasive resistance and excellent photocatalysis bacteriostatic, super hydrophilic and self-cleaning performances.
Owner:BEIJING UNIV OF TECH

Ultraviolet cured organic/inorganic hybrid super-hydrophilic coating and method for preparing same

The invention discloses an ultraviolet cured organic / inorganic hybrid super-hydrophilic coating and a method for preparing the same. The method includes carrying out sulfhydryl-alkene reaction on mercaptan compounds and acrylic ester compounds under the catalytic effects of amine catalysts to prepare hydrophilic oligomers; uniformly mixing the hydrophilic oligomers, mesoporous silicon dioxide, cross-linking agents and photoinitiators in methanol with one another to obtain solution; spraying the uniformly mixed solution on the surfaces of base materials and forming the organic / inorganic hybrid super-hydrophilic coating on the surfaces of the base materials by means of ultraviolet curing. Two ends of each mercaptan compound carry sulfhydryl, each of two ends of each acrylic ester compound carry C=C double bonds, and each of two ends of each hydrophilic oligomer carry C=C double bonds. The ultraviolet cured organic / inorganic hybrid super-hydrophilic coating and the method have the advantages that the method includes simple processes, water contact angles of the organic / inorganic hybrid super-hydrophilic coating prepared by the aid of the method can be reduced and are smaller than 5 degrees in 0.24 s, and the ultraviolet cured organic / inorganic hybrid super-hydrophilic coating is excellent in acid resistance, boiling water resistance and mechanical property.
Owner:SOUTH CHINA UNIV OF TECH

Preparation method of highly stable hydrophilic coating for surface of medical device

The invention provides a preparation method of a highly stable hydrophilic coating for the surface of a medical device. The method comprises (1) a step of polishing, washing and drying the surface ofa medical instrument substrate; (2) a step of preparing an adhesive layer, namely a step of dissolving a compound containing a catechol component and a polyamino compound into a Tris-HCl buffer solution having a concentration of 0.05M and pH of 8.5 in a mass ratio of 1-2:1, and preparing the adhesive layer on the substrate; (3) a step of hydrophilic coating preparation, namely a step of dissolvinga zwitterionic polymer containing a dopamine group component into a Tris-HCl buffer solution having a concentration of 0.05M and pH of 8.5, and preparing a hydrophilic coating on the substrate. The method is simple to operate, mild in conditions and universal. The prepared hydrophilic coating has super hydrophilicity, good biocompatibility, anticoagulant properties, and high stability, and has good application prospect in the field of medical devices.
Owner:SICHUAN UNIV

Preparation of dendritic molecule-modified hydrophilic immunomagnetic beads and application of hydrophilic immunomagnetic beads to rapid and efficient cell capture

The invention discloses preparation of dendritic molecule-modifiedhydrophilic immunomagnetic beads and application of the hydrophilic immunomagnetic beads to rapid and efficient cell capture. The preparation method comprises the following steps: firstly, synthesizing magnetic nanoparticles through a hydrothermal method; hydrolyzing ethyl orthosilicate and modifying with a silylating reagent in order that the surface of a material is rich in amino groups; coupling dendritic molecules to the surface of the material in order that the material is hydrophilic; lastly, fixing an antibody to the surface of the material to prepare a capture substrate capable of recognizing tumor cells specifically. As proved by experiments, the hydrophilic immunomagnetic beads modified by the antibody and the dendritic molecules can shorten the time of combining the material and cells, perform high-specificity recognition and capture tumor cells rapidly, and capturing efficiency of 86+ / -5 percent can be achieved only in 15 minutes; meanwhile, the activity of the cells is kept, and the tumor cells can be successfully separated from whole blood into which a tumor cell standard is added. A template-free, low-cost and low-toxicity material is applied to cell capture, so that the method is novel, convenient, practical and efficient, and has a tremendous clinical application potential.
Owner:FUDAN UNIV

Superhydrophilic coating with function of catalyzing NO long-period stable release and preparation method thereof

The invention provides a superhydrophilic coating with the function of catalyzing NO long-period stable release and a preparation method thereof. The preparation method comprises the following steps of performing pretreatment on the substrate material surface; putting the treated substrate material in partial acid buffer liquid; then, adding polyphenol compounds, multi-amine compounds, NO catalysts and oxidants for reaction; soaking a product obtained through reaction in deionized water; performing ultrasonic cleaning; then, performing drying under the nitrogen gas condition; preparing the superhydrophilic coating. The method has the advantages that the operation is simple; the reaction conditions are mild; the prepared coating material contains polyphenol compounds, a large number of functional groups such as carboxyl, phenolic hydroxyl groups, benzoquinonyls and amido groups and metal ions or chemicals capable of catalyzing an NO donor to release NO; the metal ions and the chemicalsmutually act with phenolic hydroxy functional groups or act with a system Pi-Pi accumulation for realizing the long-period existence of NO catalysts; further, the long-period sustained release function of NO is realized; the superhydrophilic coating can be used for preparation of materials for resisting blood coagulation, resisting hyperplasia, promoting endothelium growth, resisting tumor and thelike.
Owner:SICHUAN UNIV

Self-cleaning highly-anti-reflection coating solution, preparation method thereof and self-cleaning highly-anti-reflection solar glass

The invention relates to the technical field of anti-reflection coating solutions, particularly to a self-cleaning highly-anti-reflection coating solution, a preparation method thereof and a self-cleaning highly-anti-reflection solar glass. The preparation method of the self-cleaning highly-anti-reflection coating solution comprises preparing nanometer core-shell silicon dioxide colloidal microspheres, coating titanium dioxide layers onto the surfaces of core-shell silicon dioxide colloidal microspheres to obtain nanometer core-shell silicon dioxide / titanium dioxide colloidal microspheres, andthen diluting the nanometer core-shell silicon dioxide / titanium dioxide colloidal microspheres until the solid content is 3-10% to obtain the self-cleaning highly-anti-reflection coating solution. The preparation method of the self-cleaning highly-anti-reflection coating solution reduces the mass ratio of titanium dioxide / silicon dioxide, and meanwhile, maximizes the effective area of exposure, solves the technical problems of contradiction of increasing transmittance and self-cleaning effects and greatly improves the problem of low porosity of coating membranes with solid silicon dioxide asthe main component in the prior art.
Owner:DONGGUAN CSG SOLAR GLASS

Self-cleaning and environmental-friendly interior and exterior wall coating of buildings and preparation method thereof

The invention relates to self-cleaning and environmental-friendly interior and exterior wall coating of buildings and a preparation method thereof. Raw materials comprise SiO2 sol, anatase TiO2 nanometer powder, glacial acetic acid, a film forming agent and water. The preparation process is as follows: hydrolyzing with an alcohol salt solution of silicon to obtain the SiO2 sol, mixing the anatase TiO2 nanometer powder, the glacial acetic acid, the film forming agent and the water, grinding to obtain a uniform and semitransparent solution, and thus the self-cleaning coating is prepared. The self-cleaning coating is uniformly spray coated on clean and incompletely dry surfaces of interior walls or exterior walls of buildings, to obtain self-cleaning coating after natural drying, the self-cleaning coating has excellent weather fastness and super-hydrophilicity and can be used for effectively removing surface contaminants and decomposing a variety of pollutants through the sunlight to purify the air and reduce environmental pollution, so that the self-cleaning and environmental-friendly interior and exterior wall coating of buildings has a very good application prospect and important social significance.
Owner:UNIV OF JINAN

Method for preparing super hydrophobic coating on copper or copper alloy net

The invention discloses a method for preparing a super hydrophobic coating on copper or a copper alloy net without surface modification. A precious metal nanometer coating is plated on the copper or the copper alloy net by adopting a chemical plating method, the coating is not needed to be modified by substance with low surface energy, and the coating is converted into a super hydrophobic coating after being placed in air for a certain period of time. According to the method adopted by the invention, the technology is simple, the operation is easy, the repeatability is good, and the method is applicable to the large-scale production of the super hydrophobic coating.
Owner:WUHAN INSTITUTE OF TECHNOLOGY

Electrolyte for preparing bioactive element contained porous membrane on titanium metal surface through micro-arc oxidation

The invention discloses an electrolyte for preparing a bioactive element contained porous membrane on a titanium metal surface through micro-arc oxidation, and belongs to the technical field of material surface modification. The micro-arc oxidation electrolyte is prepared from the following components of 0.10-0.15 mol / L of a tetraborate solution and 0.01-0.05 mol / L of a suspended material, whereintetraborate is one kind of lithium tetraborate, sodium tetraborate and potassium tetraborate, and the suspended material is one or more kinds of calcium oxide, strontium oxide and zinc oxide. Based on the electrolyte, a micro-arc oxidation experiment is adopted, titanium dioxide coatings prepared on the surface of titanium and the surface of a titanium alloy are provided with hierarchical structure formed by laminated-distributed micron-pores and randomly-distributed nano-pores, have high porosity and superhydrophilicity and contain one or more of bioactive elements of calcium, strontium andzinc, so that the problem that an existing micro-arc oxidation coating containing bioactive elements is insufficient in porosity, hole connectivity and hydrophilicity is effectively solved, the bioactivity of the titanium surface is effectively improved, and the electrolyte can be used for surface modification of bone replacement materials, in particular to dental implants.
Owner:DALIAN UNIV OF TECH

Organic-inorganic hybrid anti-fog coating and preparation method thereof

The invention relates to an organic-inorganic hybrid multifunctional super-hydrophilic room-temperature self-crosslinking anti-fog coating and a preparation method thereof. The coating is prepared bymixing 45-60 parts of hydrophilic acrylate resin, 10-30 parts of organic-inorganic hybrid silica sol, 1-5 parts of a crosslinking agent, 1-5 parts of an auxiliary agent and 5-20 parts of a diluent andthen carrying out room-temperature self-curing. The anti-fog coating has the advantages of self-cleaning, static resistance, bacteriostasis, wear resistance, water washing resistance and aging resistance. Meanwhile, the coating is high in adhesive force and good in flexibility, the pencil hardness can reach H-2H, the water contact angle is 3-6 degrees, the light transmittance is larger than or equal to 90%, and the coating can be applied to various glass and plastic transparent base materials such as automobile glass, ocean steamships, glass curtain walls, optical lenses and protective masks.
Owner:HUNAN AEROSPACE SANFENG SCI & TECH CO LTD

Preparation method of aluminum phosphate super-hydrophilic film

The invention discloses a preparation method of an aluminum phosphate super-hydrophilic film, which comprises the following steps: S1, preparing aluminum phosphate sol of which the concentration of Alis 0.005-0.5 mol / L; S2, aging the aluminum phosphate sol; S3, plating an aluminum phosphate precursor film on the surface of the substrate by using the aged aluminum phosphate sol; S4, preheating thealuminum phosphate precursor film, wherein the preheating temperature ranges from 90 DEG C to 150 DEG C, and the preheating time ranges from 0.5 h to 5 h; and S5, heating the preheated aluminum phosphate precursor film, wherein the heating temperature ranges from 200 DEG C to 1000 DEG C, the heating time ranges from 0.5 h to 5 h, and obtaining an aluminum phosphate super-hydrophilic film. The inorganic hydrophilic transparent film prepared by the method has good durability and super hydrophilicity, and has good transmittance to visible light.
Owner:(CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD

Super-hydrophilic self-cleaning antifogging composite film, and preparation method and application thereof

The invention discloses a super-hydrophilic self-cleaning antifogging composite film, and a preparation method and application thereof. The composite film has a two-layer structure and comprises a bottom film and a surface film, wherein the bottom film is a Cu-modified Bi2O3 film, and the surface film is a mesoporous SiO2 film. The preparation method comprises the following steps: coating a Cu-modified Bi2O3 film on the surface of common glass, drying the wet film, carrying out heat treatment in a muffle furnace, coating a mesoporous SiO2 film on the surface, and carrying the same treatment process to obtain the laminated composite film. The film has favorable photocatalytic activity under visible light or weak ultraviolet light, has super-hydrophilicity even under dark conditions, is colorless and transparent and has stable performance. The method has the advantages of simple equipment, low investment and no environment pollution; and the prepared film can be widely used on glass curtain walls, bathroom mirrors, automobile glass, optical instrument components and other substrates in need of self-cleaning antifogging treatment.
Owner:SOUTH CHINA UNIV OF TECH

Outer wall cleaning powder composition of green building with self-cleaning function

The invention relates to an outer wall cleaning powder composition of a green building with self-decomposing and self-cleaning functions containing nano titanium dioxide ions. The outer wall cleaning powder composition of the green building with the self-cleaning function is prepared from the following components in parts by weight: 0.5-5 parts of nano titanium dioxide, 5-10 parts of natrium acetate, 3-10 parts of chitosan quaternary ammonium salt, 5-20 parts of lauryl sodium sulfate, 5-15 parts of sodium metasilicate, 5-15 parts of sodium carboxymethylcellulose, and 1-3 parts of sodium citrate. The outer wall cleaning powder composition is simple to prepare, low in cost, and convenient to transport and store, has the advantages of being efficient to clean, safe and environment-friendly, economical in energy source and the like under the premise of protecting the ecological environment and preventing atmosphere from being polluted, does not generate foam, does not stimulate the skin, does not damage the hands, and does not deteriorate. The outer wall cleaning powder composition can be widely applied to cleaning and scrubbing in each field, and is especially suitable for wall body cleaning of the outer wall of the building.
Owner:隋丽梅

Preparation method of self-extinguishing, super-hydrophilic and underwater super-oleophobic coating

The invention provides a preparation method of a self-extinguishing, super-hydrophilic and underwater super-oleophobic coating. The preparation method comprises the following steps that a, a cleaned matrix is soaked and treated by using a NaOH aqueous solution so as to obtain a matrix with a negative charge; b, the matrix with the negative charge is sequentially soaked and treated by using a polyethyleneimine aqueous solution and an phytic acid aqueous solution to obtain a matrix with a PEI / PA coating; c, the matrix with the PEI / PA coating is sequentially soaked and treated by using the polyethyleneimine aqueous solution and an ammonium polyphosphate aqueous solution to obtain a matrix with the PEI / PA / PEI / APP coating; and d, the matrix with the PEI / PA / PEI / APP coating just needs to be sequentially soaked and treated by using the polyethyleneimine aqueous solution and the phytic acid aqueous solution again. The preparation method has the advantages of being simple in operation, low in cost, environment-friendly and high in efficiency, and the prepared coating does not contain any fluorine-containing modifier, is suitable for any base material, and has a wide application prospect in the fields of fire resistance, liquid separation and water purification.
Owner:HEBEI UNIVERSITY

Directional porous monatomic carbon membrane electrode and preparation method and application thereof

The invention discloses a directional porous monatomic carbon membrane electrode and a preparation method and application thereof. The preparation method comprises the steps of (1) dissolving oxidized multi-walled carbon nanotubes and cobalt salt in a solvent to obtain a precursor solution; (2) carrying out hydrothermal self-assembly on the precursor solution to obtain hydrogel; (3) cutting the hydrogel into a membrane, and then performing one-way freezing to obtain an oriented porous hydrogel membrane; (4) freeze-drying the oriented porous hydrogel membrane to obtain an oriented porous aerogel membrane; and (5) carbonizing the oriented porous aerogel membrane to obtain the Co-N-C modified oriented porous monatomic carbon membrane electrode. The oriented porous monatomic carbon membrane electrode has high activity and high stability, can produce hydrogen under the current density of more than 1000mAcm <-2 >, and realizes high-current and high-stability hydrogen production.
Owner:HUNAN UNIV

Preparation method for super-hydrophilic organic silicon coating

The invention relates to a preparation method for a super-hydrophilic organic silicon coating, which is designed aiming at solving the technical problems that the similar coating has a single function and is incapable of having both high hardness and super-hydrophilicity. The key design point of the preparation method comprises the step of chemically grafting super-hydrophilic polymer molecules on organic silicon resin molecules, thus obtaining the super-hydrophilic organic silicon coating. By chemically grafting super-hydrophilic polymer molecules on organic silicon resin molecules through a silane coupling agent KH570, the organic silicon coating with both high hardness and super-hydrophilicity can be prepared. The coating is applied to the surface of glass or transparent plastic, so that the surface of the glass or transparent plastic has the functions of being wear-resistant, anti-fog, self-cleaning and the like.
Owner:宁波科乐新材料有限公司

Composite electrode for catalyzing oxidation of sodium formate, and preparation method and application thereof

The invention discloses a composite electrode for catalyzing the oxidation of sodium formate, and a preparation method thereof and application thereof. The preparation method for the composite electrode used for catalyzing the oxidation of sodium formate comprises the following steps: separately placing hydrophilic carbon paper into absolute ethyl alcohol and deionized water for ultrasonic cleaning so as to remove oil stains on the surface of the carbon paper, and drying the cleaned carbon paper for subsequent use; dissolving cobalt nitrate, ammonium fluoride and urea in deionized water and performing sufficient stirring to obtain a precursor solution; transferring the cleaned carbon paper and the precursor solution to a reaction kettle for a hydrothermal reaction; after the hydrothermal reaction is completed, carrying out cooling to room temperature, taking the carbon paper out, washing the carbon paper repeatedly with absolute ethyl alcohol and deionized water, then drying the carbon paper in an oven, and then putting the carbon paper with a precursor into a tube furnace for calcination in an air atmosphere to obtain a carbon paper electrode having Co3O4 nanowires; and with the prepared carbon paper electrode as a working electrode, carrying out electroplating in an electrolytic bath. The prepared composite electrode is extensively applicable to the fields of energy, the chemical industry, environmental protection, etc.
Owner:CHONGQING UNIV
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