116results about How to "Improve superhydrophilicity" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.