292results about How to "Efficient manufacturing method" patented technology

The invention discloses a preparation method of monodispersed M-phase vanadium dioxide nanoparticles. The preparation method comprises the following steps: mixing vanadium pentoxide, oxalate dihydrate and water according to a molar ratio of (1-2.5) : 1 : (500-800) to obtain mixed liquid, adding 4%-6% of a surfactant based on the volume of the mixed liquid into the mixed liquid, and stirring for at least 2 hours to obtain a precursor solution; reacting the precursor solution in a sealed state at 200-260 DEG C for at least 1 day to obtain reaction liquid; performing solid-liquid separation and washing on the reaction liquid in sequence to obtain orthogonal vanadium dioxide powder; annealing the orthogonal vanadium dioxide powder in a nitrogen atmosphere at 300-600 DEG C for 0.5 hour to obtain the monodispersed M-phase vanadium dioxide nanoparticles with particle sizes of 60nm-80nm. The preparation method has the advantages of environmental protection and no temperature gradient control during annealing, and can be widely used for preparing the M-phase vanadium dioxide nanoparticles with very good dispersity.

The invention discloses a nanometer fire retardant coating and a preparation method thereof. The coating comprises inorganic filler, a film-forming agent, a firm-forming aid, a plasticizer, a cross-linking agent and a drier, wherein the inorganic filler is a modified nanometer composite particle of an inorganic nanometer particle of which the surface is covered with silicon dioxide particles. The preparation method comprises the following steps of: adding the inorganic nanometer particle to a sodium silicate aqueous solution; agitating; adjusting with acid; ageing to obtain mixed sol; performing suction filtration and washing for the mixed sol; drying to obtain the composite particle; sequentially adding the composite particle and a silane coupling agent to ethanol while stirring to perform reflux reaction so as to obtain reaction liquid; alternately centrifugally washing and separating the reaction liquid with ethanol to obtain the modified nanometer composite particle; and then mixing the modified nanometer composite particle, the firm-forming agent, the firm-forming aid, the plasticizer, the cross-linking agent and the drier and performing ball milling, so as to obtain the target product. The nanometer fire retardant coating can perform endothermic reaction to produce a ceramic heat insulating layer in different stages of a fire, and can be widely applied to various situations requiring fire resistance and inflaming retarding performance.

The invention discloses a polypropylene/ organic montmorillonite nano composite material which is prepared by the components in part by weight: 80-100 parts of polypropylene, 1-15 parts of organic montmorillonite, 0.02-0.10 part of organic peroxide initiator, 2.0-5.0 parts of cross-linking agent and 5-15 parts of compatilizer. The invention also discloses a preparation method of the polypropylene/ organic montmorillonite nano composite material. The polypropylene/ organic montmorillonite nano composite material has higher crystallization temperature, toughness and modulus as well as better strength, realizes low cost and high performance of polypropylene foam material, and improves the application competitiveness of polypropylene plastic.

The invention discloses a micron semisphere composed of silver nano-flakes as well as a preparation method and a use thereof. The micron semisphere with the diameter of 1-30mu m is formed by stacking the silver nano-flakes adhered to a conducting substrate into a sector plate, wherein, the plane of the sector plate is vertical to the center of the semisphere; and the nano-flakes forming the sector plate are of a single crystal structure of silver, the length is 0.5-15mu m, the width is 20nm-1mu m and the thickness is 20-50nm. The preparation method comprises the following steps: firstly evenly mixing a silver nitrate aqueous solution with the concentration of 2-32g/L and a citric acid aqueous solution with the concentration of 8-144g/L based on the volume ratio of (0.8-1.2): (0.8-1.2) to obtain an electrolyte; and taking the conducting substrate as a cathode and a graphite flake as an anode to be placed in the electrolyte, and carrying out electro-deposition under constant current with the density of 0.1-1mA/cm<2> for 10-180 minutes to finally obtain the micron semisphere composed of the silver nano-flakes. The obtained micron semisphere can be utilized as a surface enhanced Ramanscattering (SERS) active substrate so as to measure content of rhodamine or polychlorinated biphenyls (PCBs) or p-methyl benzenethiol adhered thereon by utilizing a confocal Raman spectrometer.

The invention relates to a method for preparing durable flame retardant cotton fabrics, which comprises the following steps: firstly, preparation of a finishing liquid, namely amino-methylphosphonate DAMP, a silane coupling agent gamma-glycidyl oxyl propyl trimethyl silicane and running water are uniformly mixed, and the pH value of the mixture is adjusted to between 3 and 7 by a finishing liquid pH regulator to obtain the finishing liquid; secondly, flame retardant finishing of the cotton fabrics, namely the cotton fabrics are immersed into the finishing liquid for 20 minutes at a temperature of 40 DEG C, padded until the liquid rate is between 75 and 80 percent, dried for 3 minutes at a temperature of between 80 and 100 DEG C, and roasted for 3 minutes at a temperature of between 150 and 180 DEG C; and thirdly, testing of the flame retardant property and the durability of the cotton fabrics after finishing. The method for preparing the flame retardant cotton fabrics has the advantages that raw materials have wide sources; the prepared cotton fabrics have good durability and flame retardant property; and the method has small influence on physical and mechanical properties of the cotton fabrics.

The invention discloses a preparation method of a titanium dioxide nanopore array film. The preparation method comprises the steps of: mixing ammonium fluoride, water and ethylene glycol to obtain an electrolyte, oxidizing a two-electrode system by using a titanium sheet as a positive electrode and graphite as a negative electrode to obtain an electrolyte 1 and an electrolyte 2; then sequentially placing the titanium sheet in the electrolyte 1, the electrolyte 2 and the electrolyte to be oxidized to obtain a titanium oxide sheet; placing the titanium oxide sheet in a hydrofluoric acid to be corroded, blowing the hydrofluoric acid solution by air in a bypass to obtain a titanium oxide film stripped from the titanium oxide sheet; and finally, sequentially respectively placing the titanium oxide film into hydrofluoric acid solutions with different concentrations for being corroded, gradually diluting the hydrofluoric acid solutions until the concentrations reach 0.004-0.006wt percent, and finally preparing the titanium dioxide nanopore array film with thickness of 10-50nm. A target product prepared by adopting the preparation method can be used as a mask for preparing a quantum dot, and can be used as a micro gate to be applied to a sample support of a transmission electron microscope, and is a good filter bacterium film material further.

The invention discloses a film formed by silver nanosheets and a preparation method and application of the film. The film is 200-500nm in thickness and is formed by covering a nanometer flat branch cluster on a conductive substrate, wherein a gap between every two nanometer flat branches in the cluster is 1-15nm; and the film is formed by connecting nanosheets with arc-shaped edges in series, wherein the thickness of each nanosheet is 10-50nm, width is 30-300nm and length is 90-150nm. The preparation method comprises the following steps of: mixing and stirring a silver nitrate water solution, a citric acid water solution and water to obtain a mixed solution, and injecting a sodium borohydride water solution into the mixed solution and stirring and aging to obtain a silver seed crystal solution; then coating the silver seed crystal solution onto the conductive substrate and then airing the conductive substrate; and then putting the conductive substrate which is coated with silver seed crystals and is used as a cathode in electrolyte consisting of the silver nitrate water solution and the citric acid water solution, and carrying out electro-deposition for 5-120 minutes under the constant current of which the current density is 0.1-1mA/cm<2> to obtain the target product. The film disclosed by the invention can be used as an SERS (Surface Enhanced Raman Scattering) active substrate to rapidly detect the content of trace rhodamine 6G or tetrachlorobiphenyl-77 attached onto the SERS active substrate.

The invention relates to an ultrathin oriented silicon steel sheet and a short-process manufacturing method thereof. The steel sheet comprises the following components in percentage by mass: 0.002-0.08% of C, 2.8-3.4% of Si, 0.05-0.30% of Mn, 0.015-0.04% of S, 0.005-0.05% of Als, 0.003-0.010% of N, 0-0.6% of Cu, 0-0.2% of Sn, less than 0.004% of O, less than 0.01% of P and the balance of Fe. The thickness of the product is 0.05-0.15mm. The manufacturing method comprises the following steps: (1) smelting molten steel; (2) carrying out continuous casting to obtain a casting band; (3) cooling, carrying out hot rolling and coiling; (4) carrying out normalizing treatment and controlled cooling; (5) pickling, and carrying out primary cold rolling; carrying out interannealing; (6) pickling, and carrying out secondary cold rolling; carrying out decarburizing annealing; (7) coating an annealing separant; and (8) carrying out high-temperature annealing and purification annealing. The method greatly simplifies the ultrathin oriented silicon steel sheet production process, is simple and effective, and has the characteristics of short process, high controllability and low energy consumption.

The invention discloses a ferroferric oxide nano-composite particle and a preparation method and applications thereof. The composite particle is a ferroferric oxide nano-composite particle with the particle size of 10-30nm, and 1,4-dihydroxy anthraquinone and fluorenylmethoxycarbonyl are modified on the surface of the ferroferric oxide nano-composite particle. The preparation method comprises the steps of: firstly, carrying out a hydrothermal method on ferric trichloride hexahydrate, sodium acetate, 1,6-hexanediamine and ethanediol to obtain the ferroferric oxide nano-composite particle, then producing 1,4-dihydroxy anthraquinone, chloroacetyl chloride, and N,N-dimethylformamide into dyes, then adding the ferroferric oxide nano-composite particle, sodium carbonate and the dyes into acetonitrile to carry out a reflux reaction, carrying out solid-liquid separation, washing and drying on the obtained reaction liquor to obtain an intermediate product, then dispersing the intermediate product into the N,N-dimethylformamide, adding dispersion liquid into the fluorenylmethoxycarbonyl, stirring for 2 hours, and carrying out solid-liquid separation, washing and drying to obtain a target product. The ferroferric oxide nano-composite particle can be used for fast detecting four heavy metal ions, namely copper, zinc, cadmium and mercury in an aqueous solution.

The invention discloses a preparation method for a nickel ferrite supercapacitor electrode material taking foamed nickel as a substrate. The preparation method comprises the following steps of (1) preparing nickel nitrate hexahydrate, ferric chloride, hexadecyl trimethyl ammonium bromide, urea and deionized water to obtain a precursor solution; (2) adding the precursor solution obtained in the step (1) into an inner container of a reaction kettle, performing stirring for 30-40 minutes so that the mixture is uniformly mixed; (3) placing the foamed nickel after being processed in the inner container of the reaction kettle in the step (2), and performing hydrothermal reaction after sealing; (4) naturally cooling after completion of hydrothermal reaction, taking out the foamed nickel, and performing washing and drying; and (5) performing thermal processing in a tubular furnace in an air atmosphere to obtain the nickel ferrite supercapacitor electrode material. The preparation method is simple, is low in cost and high in yield, and the prepared electrode material has relatively high specific capacity and favorable stability, is long in service lifetime, and simultaneously also has good electrochemical activity.

The invention relates to a filling type fracture network rock test piece preparing method based on the 3D printing technology, and belongs to the related technical field of construction, hydraulic engineering, mining and other underground project tests. According to the filling type fracture network rock test piece preparing method based on the 3D printing technology, firstly, a three-dimensionalrandom fracture network model is constructed; the obtained model is converted into an SLT file; the SLT file is guided into a 3D printer; the 3D printer is used for printing the three-dimensional random fracture network model; the outer surface of the model is coated with a waterproof coating; the three-dimensional random fracture network model is placed in a steel die, cement mortar is poured into the steel die containing the three-dimensional random fracture network model, and uniform vibration is conducted; and a cement mortar test piece and the steel die are placed in a standard curing boxtogether; then the three-dimensional random fracture network model is degraded; and the degraded test piece is placed in the standard curing box again to be cured, the cured test piece three-dimensional random fracture is filled with needed materials, and finally a filling type fracture network rock test piece is obtained.

A method for producing an optical film which comprises a multilayer structure wherein at least a first film and a second film are bonded with each other with an adhesive layer or bonding agent layer being interposed therebetween, said adhesive layer or bonding agent layer being composed of a layer of a cured product of an adhesive composition or bonding agent composition. This method for producing an optical film comprises a coating step wherein foreign materials and/or air bubbles are removed by applying the adhesive composition or bonding agent composition to both the bonding surface of the first film and the bonding surface of the second film using a post-measurement coating method.

The invention provides a carbon composite material, a preparation method thereof and an application thereof. The carbon composite material is composed of soft carbon and hard carbon. When the carbon composite material provided by the invention is used as a negative electrode current collector of a secondary battery, the advantages of the soft carbon and the hard carbon can be complemented, electrochemically active substances can be uniformly embedded, adsorbed or deposited in the carbon composite material, the destruction of the structures of the carbon material and the short circuit of the battery do not occur, and at the same time, the performance of a metal secondary battery can be improved. The carbon composite material not only provides space for metal deposition but also provides a space or passage for metal ion insertion, adsorption and extraction, and the storage capacity and cycle life of the secondary battery are improved. When the carbon composite material provided by the present invention is used as the negative electrode current collector of the secondary battery, the change of the original assembly process of the battery is not needed.

The invention belongs to the field of organic synthesis, and specifically relates to a method for preparing an o-trifluoromethylaniline compound and an intermediate thereof. The reaction formula is asshown in the specification. In the formula, each substituent group is described in the specification. Specifically, a compound VII and a compound VIII react in a suitable reaction solvent under the action of a suitable catalyst to prepare a compound IX, and the compound IX further reacts with a suitable trifluoromethylating reagent under suitable reaction conditions to prepare a compound X. The invention provides an effective preparation method for the industrial development of the insecticidal compounds.

The invention discloses a nano-composite coating with low surface energy and a preparation method thereof. The nano-composite coating consists of a transition layer and a surface layer, wherein the thickness of the transition layer is between 2 and 200 mu m, and the transition layer consists of more than one layer of mixture of bulbs, clubs and flakes; and the thickness of the surface layer is between 2 and 40 mu m, and the surface layer consists of a reticulated silica glassy substance. The method comprises the steps of: performing cleaning and roughing treatment on the surface of a substrate first, then mixing the bulbs, the clubs, the flakes, a slurry forming agent and a solvent to obtain slurry of the transition layer, using the slurry of the transition layer to coat the substrate, placing the coated substrate at a temperature of between 180 and 250 DEG C to obtain the transition layer, then mixing organosiloxane water solution and alcohol solution of ethyl orthosilicate to obtain hydrolytic polycondensation reaction solution first, then dripping acid into the hydrolytic polycondensation reaction solution to obtain coating solution of the surface layer, coating the substrate coated with the transition layer by the coating solution of the surface layer, and then placing the substrate at a temperature of between 180 and 250 DEG C to obtain the nano-composite coating with low surface energy. The coating has the characteristics of low surface energy, high density, adjustable hardness, good flexibility and strong adhesion force.

The invention discloses a preparation method for a silver nanoparticle chain. At first, an aluminum sheet is processed through an anodic oxidation method so that a through-hole alumina template is obtained; a gold film is plated on one side of the through-hole alumina template in an evaporated mode and then the through-hole alumina template is used as a negative pole and placed in silver electrolyte and bismuth electrolyte respectively for multiple times of alternative electrolytic depositions, so that the alumina template is obtained, wherein the through holes of the through-hole alumina template are placed with the silver cylinders and the bismuth cylinders, the silver cylinders and the bismuth cylinders are connected alternatively and one side of the alumina template is plated with the gold film; then the alumina template is soaked in aqueous alkali, so that a nanowire array which is formed by the alternative connection of the silver cylinders and the bismuth cylinders is obtained; and then the nanowire array is placed in ethylalcohol for ultrasonic dispersion, so that a nanowire which is formed by the alternative connection of the silver cylinders and the bismuth cylinders is obtained; and the nanowire which is formed by the alternative connection of the silver cylinders and the bismuth cylinders is placed in an environment with a vacuum degree<=10 Pa to 3 Pa and a temperature 450 DEG C to 500 DEG C to be annealed for 2 hours to 6 hours, so that a target product is obtained. The preparation method for the silver nanoparticle chain has the advantages of being simple in process, low in cost, high in practical value, and capable of being widely used in the preparation of one-dimensional nanoparticle chains of various metal materials.

The utility model provides a transparent conducting membrane for laminating, comprising a transparent basis material, (A) low-refractive index layer (B) and a high-refractive index layer. The conducting membrane for laminating is characterized in that the (A) low-refractive index layer is laminated on at least one surface of the transparent basis material, that the high-refractive index layer (B) is further laminated on the low-refractive index layer (A), and that the refractive index of the high-refractive index layer (B) is higher than that of the low-refractive index layer for more than 0.2. The transparent conducting membrane for stacking provides a transparent conducting membrane for a touch panel, and the transparent conducting membrane for the touch panel has an unobvious overlapping part and high transmissivity in short wavelength area of visible light. In particular, the transparent conducting membrane for laminating is used as the transparent conducting membrane of an electrostatic capacity touch panel and used for providing a transparent conducting membrane for laminating of the transparent conductive membrane.

The invention discloses a wood fiber biomass loaded nano hydrated titanium dioxide composite material, and a preparation method and an application thereof, and belongs to the technical field of titanium dioxide composite materials. The preparation method comprises the steps: soaking wood fiber biomass into a mixed solution of butyl titanate and absolute ethyl alcohol, treating with an alkaline solution, washing the wood fiber biomass material with water, and drying to obtain the wood fiber biomass loaded nano hydrated titanium dioxide composite material. The wood fiber biomass is selected as acarrier, the good photocatalyst titanium dioxide and the wood fiber biomass are combined, the composite material is low in preparation cost and environmentally friendly, recycling of resources is achieved, and the preparation process is simple, convenient and environmentally friendly. The composite material not only can adsorb and remove heavy metal ions in water, but also can catalytically degrade organic pollutant methylene blue under the excitation of sunlight and visible light.