38 results about "Zro2 nanoparticles" patented technology

A process for preapring nano ceramic spring includes such steps as mixing ZrO2 nanoparticles with premixed liquid, ball grinding, vacuum deaerating, adding trigger moulding, solidifying demoulding, drying, heating to 700-1200 deg.C for 0.5-2 hr, degumming, immersing in slurry for 10-30 min, putting in supporter in powder, and sintering at 1400-1700 deg.C for 0.5-3 hr.

The present invention discloses a nano zirconia / epoxy resin compound material and a preparation method thereof, and belongs to the technical field of material preparation. The nano zirconia / epoxy resin compound material comprises zirconia nanoparticles and an epoxy resin; and the zirconia nanoparticles can be uniformly dispersed in the epoxy resin matrix in an amount of 1-10 wt% of the epoxy resin. The method comprises the following steps: (1) the zirconia nanoparticles are prepared by a sol-gel combustion method; (2) a silane coupling agent is used to conduct surface-modifying of the zirconiananoparticles; (3) the modified zirconia nanoparticles are dispersed in the epoxy resin to form a uniform nano-zirconia / epoxy resin dispersion system; and (4) a curing agent is added to conduct curing. The ZrO2 nanoparticles synthesized by improving the sol-gel method are introduced into the epoxy resin dispersion system to significantly improve the toughness of the resin after the curing and greatly improve the mechanical properties of the epoxy resin. Besides, the nano zirconia / epoxy resin compound material is simple in preparation technology, low in production costs and mild in reaction conditions, can be subjected to batch production, and can meet the special requirements for the resin materials in various fields of aerospace, civil industry, etc.

The invention relates to a far-infrared and antistatic polyester functional fiber with good moisture absorption. Polyester is used as a base for the far-infrared and antistatic polyester functional fiber, carbon nano-tubes, ZrO2 nano-particles, TiO2 nano-particles, talc powder and dispersing agents are used as fillers for the far-infrared and antistatic polyester functional fiber, and the far-infrared and antistatic polyester functional fiber is prepared from the base and the fillers by means of melt spinning.

The invention discloses a Pt@ZrO2 photo-thermal catalyst with a hollow core-shell mesoporous structure, and a preparation method and an application thereof. The Pt@ZrO2 photo-thermal catalyst is prepared by embedding Pt nanoparticles into the interiors of hollow ZrO2 nanoparticles, wherein the weight percentage content of Pt is 0.1% to 0.5% on the basis that the weight percentage content of the catalyst is 100%. The preparation method comprises the following steps: (1) dissolving H2PtCl6.6H2O into purified water, adding sodium citrate as a reducing agent, then adding a surfactant, carrying outrefluxing at a high temperature, and carrying out cooling; (2) adding tetraethoxysilane and ammonia water, carrying out uniform mixing under stirring so as to form a suspension, carrying out centrifuging and washing, and carrying out redispersing in ethanol for subsequent usage; (3) adding zirconium n-butoxide to coat zirconium dioxide, and carrying out stirring, aging, centrifuging, washing anddrying; and (4) carrying out etching with an excess NaOH solution, and carrying out centrifuging, washing, drying and calcining. The Pt@ZrO2 photo-thermal catalyst provided by the invention has the following advantages: the preparation method is simple; photo-thermal catalytic oxidation of an organic pollutant is realized under the condition of 100 to 200 DEG C; the Pt@ZrO2 photo-thermal catalystremains basically unchanged activity after continuous and cyclic application for 30 times or above; and the Pt@ZrO2 photo-thermal catalyst has the characteristics of high efficiency, stability, recyclability and easy recovery.

An atomizing ceramic nozzle for desulfurizing the fume generated by the coal-burning boiler in steam power plant is proportionally prepared from alpha-Al2O3 superfine powder, t-ZrO2 nanoparticles, clay, mineralizing agent, and the aqueous solution of methylcellulose through sintering and plating alpha-Al2O3 ceramic film. It has high resistance to high temp, strong corrosion and sudden temp variation, and high strength.

Methods employing acidic and basic catalysts are disclosed, and generally entail hydrolysis and condensation reactions of silicon based components. The methods are useful for forming siloxane-modified metal-oxide nanoparticles, such as modified ZrO2 nanoparticles. The siloxane-modified metal-oxide nanoparticles, and products including the siloxane-modified metal-oxide nanoparticles, can be used to form various products, such as lenses or encapsulants for making various devices, such as, but not limited to, light emitting diodes (LEDs).

The invention discloses ZrO2 with a micro / nano structure and a preparation method of ZrO2. ZrO2 is a multi-layer ZrO2 mesoporous microsphere which has a tertiary structure: an about 10-20 nm ZrO2 nano particle is used as a primary unit to be assembled into an about 100-200 nm ZrO2 nano sphere; the ZrO2 nano sphere as a secondary structure unit is assembled again into 1.0-2.0 micrometer ZrO2 microsphere. Beta-cyclodextrin and EDTA (edetic acid) are used as self-assembling mediums, the multi-layer ZrO2 microsphere with the micro / nano structure is prepared by using a beta-cyclodextrin inclusion and steric hindrance effect and an EDTA complexing action and adopting a hydrothermal method, favorably crystallized tetragonal zirconia can be obtained, without high-temperature calcinations, tetragonal and monoclinal mixed phase zirconia can be obtained after high-temperature calcinations, the preparation method is simple and novel, and the conditions are controllable.

The invention relates to a preparation method of a surface functionalized zirconia nano particle for a dental repair resin. The preparation method of the surface functionalized zirconia nano particle for the dental repair resin is characterized by comprising the following steps of: 1) preparation of dopamine methacrylate: reacting dopamine hydrochloride with methacrylic anhydride to introduce a double bond which can be chemically bonded with the dental repair resin on DOPA, so as to obtain grey DOPA methacrylate; and 2) preparation of a surface modified ZrO2 nano particle: introducing a double bond which can be tightly combined with the resin on the surface of the ZrO2 nano particle through the interaction of the DOPA component in DMA (dimethyl acetamide) and the ZrO2 nano particle to obtain the surface functionalized zirconia nano particle for the dental repair resin. When the surface functionalized zirconia nano particle is used for the dental repair resin, the obtained resin is high in bending strength. The preparation method disclosed by the invention is simple in process and low in production cost and has the effect of effectively improving a dental material.

The invention relates to a chemical coating material with resistance to geothermal water corrosion and a preparation method of the chemical coating material, and belongs to the technical field of newenergy materials. Nano zirconium dioxide is added to a coating solution, so that a three-dimensional network skeleton is formed between Ni-P particles and ZrO2 nanoparticles, the Ni-P particles are filled with the ZrO2 nanoparticles, a coating is subjected to crystallization and Ni and P desolventizing decomposition under the action of heat treatment, P atoms diffuse and are subjected to lattice distortion, and Ni and intermetallic compounds are formed. Meanwhile, the electrode potential of Ni is higher than the electrode potential of Cu, a uniform film is formed on the surface of the coating,and the passivation film can effectively block the corrosion process and can also significantly reduce porosity of the coating grain refinement coating, effectively inhibit contact between a corrosion medium and a substrate, and improve corrosion resistance. Phosphate has the function of a buffer agent and promotes adsorption of a salt film protective layer to form a uniform film layer, oxalic acid can activate the surface of the steel substrate, borax can retard corrosion of the coating from the external environment, and corrosion resistance of the coating is enhanced.

The invention relates to a stereo structure fabric allowing temperature to be adjusted slightly. The knitted fabric is formed by interweaving cotton fibers, viscose, elastic fibers, polypropylene fibers and smart temperature adjustment novel fibers through double-faced weft knitting, and comprises an outer layer, an air layer and an inner layer, and the outer layer is composed of the cotton fibersand the viscose, wherein each cotton fiber yarn piece and two pieces of viscose fiber yarn are woven through spacing; the inner layer is composed of the elastic fibers and the smart temperature adjustment novel fibers; the smart temperature adjustment novel fibers are polyester functional fibers which have far infrareds, and are resistant to static and good in moisture absorption, wherein with polyester being a substrate and carbon nanotubes, ZrO2 nanometer particles, TiO2 nanometer particles, talcum powder and a dispersing agent being filling, the polyester functional fibers are prepared through melt spinning.

The invention discloses a preparation method of a zirconium dioxide / porous polyaniline modified electrode. The preparation method comprises the following steps: (1) dispensing a silicon dioxide microsphere layer on a glass carbon electrode subjected to cleaning treatment and airing at the room temperature; (2) soaking the electrode modified in the step (1) in a 0.25M phenylamine and 0.6M sulfuric acid solution and performing electropolymerization to form a polyaniline film layer; (3) soaking the electrode modified in the step (2) in an HF solution for etching for 45min, and washing with a great amount of water; and (4) soaking the electrode modified in the step (3) in a 5mM ZrOCl2 solution containing 0.1M KCl, performing electro-deposition to form a ZrO2 nano particle layer, and washing with the water to obtain the zirconium dioxide / porous polyaniline modified electrode. The zirconium dioxide / porous polyaniline modified electrode is prepared by the electropolymerization and the electro-deposition, and compared with the other methods, the method for preparing the zirconium dioxide / porous polyaniline modified electrode is simple, rapid, economic and effective.

The invention belongs to the technical field of oilfield development and particularly provides a nanoparticle-crosslinked polymer oil-displacing agent and a preparation method and application thereof.The nanoparticle-crosslinked polymer oil-displacing agent comprises polyacrylamide, ZrO2 nanoparticles and water, wherein the concentration of the polyacrylamide is 90-3000 mg / L, and the concentration of the ZrO2 nanoparticles is 0.001-1 mg / L. The nanoparticle-crosslinked polymer oil-displacing agent using activated nano ZrO2 as a crosslinker helps control a polymer to generate intermolecular crosslinking reaction, so that crosslinking reaction efficiency is improved, the usage of the crosslinker is reduced, viscosity of the polymer solution is improved, and oil recovery is enhanced.

The invention discloses a method for detecting luteolin by combining solid-phase extraction and an electrochemical sensor, and belongs to the technical field of analytical chemistry. According to themethod, ZrO2 nanoparticle and chitosan doped graphene aerogel modified silica gel is used as a solid phase extraction column of an extraction material to extract luteolin in a to-be-detected sample, and ZrO2 nanoparticle and chitosan doped graphene aerogel modified glassy carbon electrode is used as an electrochemical sensor platform to detect the luteolin in the extract liquor. According to the invention, the ZrO2 nanoparticle and chitosan doped graphene aerogel is used as electrode materials, and the ZrO2 nanoparticle and chitosan doped graphene aerogel modified silica gel is used as the extraction material, so that the adsorption selectivity is high, and detection signal amplification is realized; the preparation method is simple and easy to implement and relatively low in cost; and thesolid-phase extraction and the electrochemical sensor are combined, so that the interference of a sample matrix is avoided, the detection sensitivity and accuracy of the method are improved, and theoperation is simple.

The invention belongs to the preparation field of inorganic nanometer materials, and specifically relates to a method for preparing a ZrO2 nano particle with uniform particle size distribution and surface modified metal cations. The method comprises the steps of adding 30-50 millimole of alkali into an organic solvent without water; fully agitating; adding 5-10 millimole of zircon salt into the solution; agitating until complete dispersion to form a colloid; adding 0-10ml of oleic acid in droplets; placing the colloid in a stainless reactor with an inner polyfluortetraethylene lining; sealing well; and placing the reactor in a constant temperature oven with the temperature of 120-180 DEG C for reaction for 24-36 hours, so as to obtain cubic phase ZrO2 nano particles at the lowermost layer. The prepared nano particles have particle size of 4.5nm or so, and narrow dispersion, can stably disperse in solvents, such as water, ethanol, etc. and have practical application value. The method has the advantages of simplicity, less time consumption, high yield, lower pressure in reaction process and suitability for industrialized production.

The invention discloses a charge storage device based on oxide nanoparticles formed by in-situ annealing, and a preparation method thereof. A layer of metal Zr thin film is grown by virtue of a pulsedlaser deposition method; and in-situ oxygen annealing treatment is carried out to form a ZrO2 nanoparticle storage medium. The preparation method of the charge storage device based on the ZrO2 nanoparticles formed by the in-situ annealing is simple in operation and can realize large-scale preparation.

The invention discloses a preparation method of black mesoporous carbon loaded ZrO2 nanoparticles. The preparation method comprises the following steps: S1, carrying out solvothermal reaction on terephthalic acid and zirconium tetrachloride in a mixed solvent, centrifuging, and taking the precipitate to obtain a UIO-66 precursor; and S2, taking the UIO-66 precursor, and calcining the UIO-66 precursor in an inert gas atmosphere to obtain the black mesoporous carbon loaded ZrO2 nanoparticles. The invention further discloses the black mesoporous carbon loaded ZrO2 nanoparticles, and the black mesoporous carbon loaded ZrO2 nanoparticles are prepared according to the preparation method of the black mesoporous carbon loaded ZrO2 nanoparticles. The invention also discloses an application of the black mesoporous carbon loaded ZrO2 nanoparticles in seawater desalination. The black mesoporous carbon loaded ZrO2 nanoparticles have a multi-layer pore structure and are high in specific surface area, good in sunlight absorption capacity and high in photo-thermal conversion efficiency.

The invention discloses a method for constructing a nano zirconium dioxide coating on the surface of a metal bracket. It includes the following steps, A, pretreatment: After the bracket is left standing in NaOH solution, place it in an ultrasonic cleaner and clean it with acetone and absolute ethanol respectively; finally rinse it repeatedly with deionized water; B, before sputtering Treatment: pre-sputter argon gas first, then vacuumize, and start to introduce mixed gas; C, preparation of zirconia coating: install sputtering zirconia ceramic target in high-vacuum multifunctional magnetron sputtering equipment, and The prepared zirconia-coated bracket was placed in a box-type resistance furnace and annealed in nitrogen to obtain a metal bracket with nano-zirconia coating. Its advantages are: high deposition rate, low defects in the film, strong bonding with the substrate; good smoothness; effectively reducing the surface roughness of the bracket; strong adhesion between the zirconia coating and the bracket; The zirconia coating significantly improves the mechanical properties of the bracket surface and has strong corrosion resistance.

The invention discloses a ZrO2 nanoparticle modified three-dimensional graphene material and application thereof in organophosphorus pesticide detection, and belongs to the technical field of analytical chemistry. The ZrO2 nanoparticle modified three-dimensional graphene material disclosed by the invention is a three-dimensional graphene material constructed by taking a metal net as a matrix, bonding poly(diallyldimethylammonium chloride) reinforced graphene oxide aerogel and depositing ZrO2 nanoparticles on the surface of the graphene aerogel; a solid-phase extraction column prepared by taking the material as a filling material can realize high-efficiency extraction of the organophosphorus pesticide, and then the organophosphorus pesticide is analyzed and detected by using high performance liquid chromatography. The method for detecting the organophosphorus pesticide by adopting the solid-phase extraction column is wide in linear range, low in detection limit and high in sensitivity, can be used for enriching and detecting the organophosphorus pesticide in vegetables, and not only has relatively strong matrix anti-interference capability, but also has good enriching and purifying performance and a wide application prospect.

The present invention relates to a preparation method for forming nano-ZrO2 particles in molten steel, which comprises the steps of adding Fe-Zr alloy wires into the molten steel of low carbon steel or low carbon alloy steel with the oxygen concentration of not more than 100PPm, dissolving the Fe-Zr alloy, then keeping the temperature, starting to cast, and controlling the cooling speed during the solidification process when casting to be not lower than 500 DEG C / min; due to the containing of alloy elements of Zr and O of the precipitated phase of ZrO2 being higher than the melting point of a matrix alloy, the solubility of Zr and O is decreased along with the temperature decrease, and the greater super-cooling degree is formed by the faster cooling speed, thereby obtaining the strengthened solidified alloy dispersed and precipitated from the nano-ZrO2. The preparation method has the advantage that the nano-ZrO2 dispersed phase can be directly formed in the solidified alloy.

The invention relates to a microfluidics preparation method of ZrO2 / PS hybrid microspheres as well as a product and application of the of same and belongs to the technical field of hybrid microsphere preparation. According to the preparation method, a dichloromethane solution in which a silane coupling agent methacryloxypropyltrimethoxysilane (MPS) is dissolved and modified ZrO2 nanoparticles and polystyrene (PS) are used as a dispersion phase, a polyvinyl alcohol (PVA) aqueous solution is used as a continuous phase, and therefore, the ZrO2 / PS hybrid microspheres are prepared through a focused microfluidic channel. The modified ZrO2 nanoparticles and a polymer matrix (PS) have good compatibility and can be uniformly distributed in the microspheres, so that the prepared ZrO2 / PS microspheres have good optical transparency, and the refractive index of the hybrid microspheres is increased along with the increase of the content of the doped ZrO2 nanoparticles. The material has more excellent processability and controllable refractive index than single-component microspheres, and has a wider application prospect in the field of super-resolution imaging.

The invention relates to a method for synthesizing zirconium dioxide nanoparticles of special shapes with an alcohol-assisted hydrothermal process in one step. In the method, monoclinic phase fusiform ZrO2 nanoparticles are prepared with an ethanol-assisted hydrothermal process by taking ZrOC12*8H2O and NaOH as raw materials and controlling solution concentration, volume ratio, stirring speed, reaction time and drying temperature to a proper degree; and rectangular monoclinic phase ZrO2 nanoparticles are prepared with an glycol-assisted hydrothermal process by taking ZrOC12*8H2O and NaOH as raw materials and controlling solution concentration, volume ratio, stirring speed, reaction time and drying temperature to a proper degree. Compared with the prior art, the synthesis of the monoclinicphase fusiform ZrO2 nanoparticles and the rectangular monoclinic phase ZrO2 nanoparticles needs no other supplementary means, the process is simple, and the product has high purity, good experimentalrepeatability and excellent heat stability and optical property.

The present invention discloses a nano zirconia / epoxy resin compound material and a preparation method thereof, and belongs to the technical field of material preparation. The nano zirconia / epoxy resin compound material comprises zirconia nanoparticles and an epoxy resin; and the zirconia nanoparticles can be uniformly dispersed in the epoxy resin matrix in an amount of 1-10 wt% of the epoxy resin. The method comprises the following steps: (1) the zirconia nanoparticles are prepared by a sol-gel combustion method; (2) a silane coupling agent is used to conduct surface-modifying of the zirconiananoparticles; (3) the modified zirconia nanoparticles are dispersed in the epoxy resin to form a uniform nano-zirconia / epoxy resin dispersion system; and (4) a curing agent is added to conduct curing. The ZrO2 nanoparticles synthesized by improving the sol-gel method are introduced into the epoxy resin dispersion system to significantly improve the toughness of the resin after the curing and greatly improve the mechanical properties of the epoxy resin. Besides, the nano zirconia / epoxy resin compound material is simple in preparation technology, low in production costs and mild in reaction conditions, can be subjected to batch production, and can meet the special requirements for the resin materials in various fields of aerospace, civil industry, etc.

The present invention relates to a skin-friendly bra back button having a health care effect, the skin-friendly bra back button comprises a back button body, the back button body is prepared from polyester functional fiber, the polyester functional fiber is based on polyester and prepared from carbon nanotubes, ZrO2 nanoparticles, TiO2 nanoparticles, talc powder and a dispersing agent as packingsby melt spinning, and the dispersing agent is gold nano flower particles.

The invention discloses a preparation method of a novel surface-enhanced Raman spectroscopy (SERS) substrate, and belongs to the technical field of preparation of multifunctional nano materials. The invention aims to develop a nano material which can be used as a surface enhanced Raman spectrum substrate, and a preparation method for changing the microstructure of nano particles by adopting a metal ion doping technology. The method comprises the following steps: preparing ZrO2 nanoparticles doped with metal ions, carrying out surface modification on probe molecules, and examining the SERS performance of a substrate. A hydrothermal synthesis method is adopted, and the preparation process is simple; and the doping of the metal ions can improve the surface state of the substrate and can improve the SERS signal intensity. Compared with undoped ZrO2 nano particles, the metal ion doped ZrO2 nano particles prepared by adopting the preparation method disclosed by the invention have the advantage that the SERS signal is obviously improved. The substrate has high stability and good biocompatibility and is an environment-friendly green material, the SERS active substrate is expanded, and theapplication range of SERS molecular detection is widened.

The invention discloses a novel photo-catalytic material as well as a preparation method and application thereof. The material is a tetragonal ZrO2 nanoparticle-modified g-C3N4 organic photocatalyst and is prepared and synthesized by melamine and zirconium nitrate as raw materials in air through a one-step calcination method. The electronic structures and the photocatalytic activities of tetragonal ZrO2 nanoparticles attached onto the surface of the catalyst are significantly changed, so that the photocatalytic activity of a laminar g-C3N4 material with the attached tetragonal ZrO2 nanoparticles for Rhodamine B degradation and water decomposition under visible light irradiation is greatly enhanced. Compared with a pure phase g-C3N4 photocatalyst, the catalyst is improved by 1.5-14.4 timesin the efficiency of the Rhodamine B degradation under visible light. Compared with tetragonal ZrO2 with zero catalytic efficiency, the catalyst is significantly improved in performance. In addition,the preparation method disclosed by the invention is mild in conditions, convenient to operate and conducive to large-scale production.

The invention provides a production technology of coating for reducing mechanical wearing. The production technology comprises the following steps: adding colloidal graphite into a container during processing, adding a structural adhesive into the colloidal graphite, performing high-speed mixing, adding a highly dispersed nano-material alumina and silicon carbide mixed material after the mixing isfinished, adding a solution with a three-axis fitness synthetic structure of inorganic silicon, fluorocarbon and organic silicon into the obtained mixture, mixing the mixture at a high speed, addingY2O3-ZrO2 nanoparticles after the mixing is finished, performing mixing through ultrasonic treatment, and filling the obtained product after the mixing is finished. The coating can reduce the wearingof a mechanical structure and improve the wear-resistant effect of a coating layer.