89results about How to "Flexible preparation process" patented technology

The invention discloses a silver nanoparticle-modified zinc oxide nanorod array, a preparation method thereof and application thereof. An array consisting of zinc oxide nanorods is arranged on a substrate; the length of the zinc oxide nanorods is 1 to 1.4mu.m; the diameter of the rods is 50 to 60nm; the size of silver nanoparticles at the top ends of the rods is 100 to 120nm; the size of the silver nanoparticles on the surfaces of the rods is 25 to 35nm; the distance between the particles is less than or equal to 10nm; the distance between the silver nanoparticles at the top ends of the adjacent rods is 40 to 60nm; and the distance between the silver nanoparticles on the surfaces of the adjacent rods is 25 to 35nm. The method comprises the following steps of coating a zinc acetate ethanol solution on the substrate; after drying the substrate, cleaning, dispersing and thermally decomposing the substrate to obtain a substrate on which a zinc oxide seed layer is coated; performing electro-deposition on the substrate coated with the zinc oxide seed layer in a zinc nitrate ammonia complexation solution to obtain a substrate with the zinc oxide nanorod array; and performing silver ion sputtering on the substrate in an ion sputter to obtain the target product. The silver nanoparticle-modified zinc oxide nanorod array can serve as an active substrate of SERS (Surface Enhanced Raman Scattering) and is used for measuring rhodamine 6G or polychlorinated biphenyl 77.

The invention provides a ceramic with light weight, high strength and high toughness and a preparation method thereof. The method comprises the following steps: 1) presintering ceramic cenosphere powder to increase the strength of the ceramic cenosphere powder; 2) adding the presintered ceramic cenosphere powder in ceramic powder, adding the related additives; 3) selecting a moulding technology to mould the ceramic; 4) drying the obtained blank; and 5) sintering the dried blank. The invention provides the ceramic with light weight, high strength and high toughness and the preparation method thereof, wherein the ceramic cenosphere is a ceramic material toughened by the toughening body.

The invention relates to a slurry compounding process of a lithium ion battery slurry. In mass percent, the process comprises the following steps of: (1) beating an adhesive, (2) configuring a conductive adhesive, and (3) configuring the slurry. The lithium ion battery slurry prepared by adopting the process has the characteristics of uniformity, stability, long standing time and the like, and at the same time the preparation process is simple, flexible and especially suitable for large-scale lithium ion battery slurry compounding applications.

The invention discloses a method for preparing a nanometer titania coated graphite cathode material. The method comprises the steps that A, graphite is added into a mixed solution of glacial acetic acid, water and absolute ethyl alcohol at room temperature under the stirring condition, the materials are fully mixed, and a mixture is obtained; B, a titanate and absolute ethyl alcohol mixed solution is dropwise added into the mixture obtained in the step A within a certain time at room temperature under the stirring condition, standing is carried out for several hours, drying is carried out, and metatitanic acid gel coated powdered graphite is obtained; C, the metatitanic acid gel coated powdered graphite obtained in the step B is placed in a program temperature control furnace, the temperature is raised to 350 DEG C to 850 DEG C at a certain heating rate, the constant temperature is kept for several hours under the vacuum condition, the product is naturally cooled to room temperature, and the anatase and rutile type nanometer titania coated graphite material is obtained. The grain size of the nanometer titania coated graphite cathode material ranges from 1 micrometer to 35 micrometers, and high specific discharge capacity, good cycle performance and high high-rate charge and discharge performance are achieved.

The invention discloses a tungsten nitride based ternary nano composite super-hard film material and a preparation method thereof. The material is a nano composite super-hard film which is covered on a substrate and has a chemical formula of WxM1-xN, wherein in the nano composite super-hard film, W represents tungsten metal, M represents metal replacement, N represents nitrogen, and the value range of the x is 0.06 to 0.72; and the film consists of the tungsten metal, nitride solid solution phase of the M metal and tungsten metal phase or consists of tungsten nitride phase, tungsten metal phase and M metal phase, the grain size of the film is 4 to 30 nanometers, and the thickness of the film is 3 to 7mu m. The method comprises the following steps: firstly, placing a composite target consisting of the tungsten metal and the metal replacement and the substrate on a cathode and in a sample stage in a vacuum chamber of magnetron sputtering equipment respectively; after the vacuum degree of the vacuum chamber is less than or equal to 1*10<-3> pa and the temperature of the substrate reaches 350 and 450 DEG C, making the vacuum chamber in argon-nitrogen mixed atmosphere, sputtering the composite target for 60 to 120 minutes to obtain the tungsten nitride based ternary nano composite super-hard film material. The film material and the preparation method can be widely applied in the fields of mechanical manufacture, automobile and textile industry, geologic drilling, die industry and the like.

The invention relates to a plastic oil and gas separator with the labyrinth type and the screw type combined in order to solve the problems that oil and gas separation efficiency can not be optimized, and the mixture of engine oil and gas can not be completely separated. The plastic oil and gas separator with the labyrinth type and the screw type combined comprises a shell and a clamping cover arranged on the end face of the shell and is characterized in that the shell is of a flat box type structure formed through one-time injection molding, and an oil and gas mixture inlet, an oil return cavity and an air separation cavity are all provided with smooth surfaces; the oil and gas mixture firstly passes through a labyrinth type channel and then passes through a fine separator assembly; the fine separator assembly is provided with a plurality of oil and gas separation holes with screw-type channels; the position where the clamping cover is matched with the shell is provided with an oil and gas separation diaphragm. The plastic oil and gas separator with the labyrinth type and the screw type combined is scientific and reasonable in structure and has good economic benefits and the environmental-friendly working effect, and separated matter can be recycled.

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 invention discloses a nano composite ethylene-propylene rubber cable material and its preparation method. The material is composed of ethylene-propylene-diene rubber, a nano compound, an organic modifier, inorganic metal hydroxide, an aging resister, a curing active agent and a peroxide according to 100:1-20:0.5-10:50-200:0.5-10:10-20:0.1-10, wherein, the nano compound is nano montmorillonite and nano calcium carbonate according to the weight ratio of 1:0.5-2, the organic modifier is a silane coupling agent or a titanic acid coupling agent or methacrylic acid or acrylic acid, the curing active agent is zinc oxide and stearic acid, the peroxide is dicumyl peroxide. The preparation method comprises the following steps: proportioning the raw materials according to the weight, successively adding the raw materials with the corresponding weight into an open mill or an internal mixer for mixing, placing on a plate vulcanizing machine for vulcanizing, producing the products with zero-halogen flame-retardant, age resistance and excellent mechanical property. The products is suitable for the occasions with requirement of zero-halogen flame-retardant, age resistance and frequent movement in the nuclear power plants, warships, mining industry and the like.

The invention relates to a nanofiber membrane with a heavy metal adsorbing function and a preparation method of the nanofiber membrane. The nanofiber membrane comprises a matrix and macromolecules self-assembled on the surface of the matrix. The preparation method comprises the following step: self-assembling the macromolecules carrying amino groups on a thermoplastic nanofiber membrane by virtue of a chemical oxidative polymerization method to obtain the nanofiber membrane. The nanofiber membrane is simple in preparation process and low in cost, and is capable of efficiently adsorbing heavy metal ions; the defect that a conventional heavy metal ion adsorbing agent requires to be separated for the second time is avoided; the effective removal of hexavalent chromium ions is realized by using a principle of first adsorption and then reduction; meanwhile, the macromolecules have a strong hydrogen bond function among hydrophilic nanofiber membranes, cannot drop from the membranes, and can be recycled.

The invention discloses a micro-nano structure zinc oxide-carbon composite pellet and a preparation method thereof. The micro-nano structure zinc oxide-carbon composite pellet is obtained by hybridization compounding of zinc oxide and carbon to obtain a solid pellet having the diameter of 6-12 micrometers, wherein vertical nanosheets having the length of 700-900 nanometers, the height of 700-900 nanometers and the thickness of 15 to 25 nanometers are formed on surfaces of the solid pellet and are connected with each other into a nest; a mole ratio of zinc oxide to carbon is (60-70%): (30-40%); zinc oxide has a hexagonal structure; and carbon comprises amorphous carbon and graphitized carbon and a weight ratio of the amorphous carbon to the graphitized carbon is (85-95%): (5-15%). The preparation method comprises the following steps of dissolving zinc acetate dihydrate, urea, sodium citrate dihydrate and glucose in water to obtain a mixed solution, carrying out hydrothermal treatment on the mixed solution to obtain a reaction solution, orderly carrying out solid-liquid separation, washing and drying to obtain an intermediate product, putting the intermediate product in an inert gas atmosphere, and carrying out annealing to obtain the micro-nano structure zinc oxide-carbon composite pellet. The micro-nano structure zinc oxide-carbon composite pellet can be widely used for fields of catalysis, adsorption and photoelectricity.

The invention discloses a millimeter level mesoporous ozone oxidation catalyst and preparation and an application method thereof, belongs to the technical field of water processing, and aims to solve the problems that the hydrodynamic performance of a conventional ozone oxidation catalyst is bad, the catalytic efficiency is low, and the stability is insufficient. The millimeter level mesoporous ozone oxidation catalyst comprises cerium, titanium, zirconium, and oxygen, is a millimeter level mesoporous spherical particle, has a unique crystal structure, at the same time, has the advantages of durable and stable catalytic activity, excellent hydrodynamic characteristics and pore structure, high compression strength, acid/alkali resistance, ligand stability, oxidation resistance, and thermal stability, and can prominently improve the mineralization degree of ozone oxidation. The valence composition of active components is not changed after repeated use. The preparation method comprises the following steps: preparing millimeter level mesoporous titanium-zirconium composite microspheres by a calcium alginate template method, and then combining cerium and the titanium-zirconium compound by an impregnation method. The provided catalyst can be applied to fixed bed reactor/fluidized bed reactor wastewater treatment, and can be thermally regenerated when pollutants are accumulated on the catalyst.

The invention discloses a novel efficient metallic iridium coordination compound red organic electrophosphorescent material and an organic electroluminescent device thereof. The organic electroluminescent device is in a lamellar doping type structure, wherein a luminescent layer adopts Zn(BTZ)2 as a phosphorescent main material and a series Ir (III) coordination compound as a doping agent. The metallic iridium coordination compound red organic electrophosphorescent material taking pyridazine united aromatic hydrocarbon as a basic skeleton structure can realize saturated red phosphorescence emission of 610-620 nanometers with colour purity (0.65, 0.35) by combining with the structure optimization of the organic electroluminescent device taking the metallic iridium coordination compound red organic electrophosphorescent material as the doping agent and has maximum current efficiency of 12 cd/A and service life of 20000 hours; and compared with the traditional red light material, the metallic iridium coordination compound red organic electrophosphorescent material has the advantages of higher efficiency, more saturated colour purity and obvious red phosphorescent emission of the service life of the excellent device. The invention has flexible manufacture process and provides excellent materials for full color display and illumination application.

The invention discloses an immersion cooling heat dissipation structure, a radiator, a heat dissipation system and a manufacturing method of the immersion cooling heat dissipation structure. The immersion cooling heat dissipation structure comprises a boiling heat exchange unit, and the boiling heat exchange unit comprises a first surface and a second surface which are arranged back to back; a microstructure composed of a plurality of opposite convex parts and/or a plurality of opposite concave parts is distributed on the first surface, and the first surface is at least used for making contactwith an electrically insulating immersion cooling medium; the second surface is a smooth face and used for being attached to a heating element, or the second surface and the heating element are integrally arranged. The immersion cooling heat dissipation structure provided by the invention has the advantages of higher heat exchange area, more nucleation sites, stronger capillary fluid infusion capability, excellent boiling heat exchange performance, high heat transfer coefficient and critical heat flux density, low superheat degree of a nucleation boiling starting point and great advantages ina small-space high-heat-flux heat dissipation application scene; meanwhile, the manufacturing process is relatively flexible and controllable, the cost is low, industrial large-scale application canbe achieved, and the market competitiveness is high.

The invention discloses a rock wool fiber-reinforced silicon oxide-based high-strength thermal-insulation composite material and a preparation method thereof. The objective of the invention is to enable the composite material to be high in strength and low in thermal conductivity. The material is composed of a silicon oxide matrix and a rock wool fiber prefabricated part, wherein pores of rock wool fibers are filled with the silicon oxide matrix, and the rock wool fibers are bonded into a whole; the rock wool fiber prefabricated part is formed by laying the rock wool fibers; and the silicon oxide matrix is formed by stacking small silicon oxide particles, and the small silicon oxide particles are obtained by carrying out gel aging, normal-pressure drying, repeated dipping and high-temperature sintering on water-based silica sol. The preparation method comprises the following steps: impregnating water-based silica sol with the rock wool fiber prefabricated part under vacuum to form a fiber prefabricated part/sol mixture, carrying out heating for a period of time to obtain a wet gel composite material, drying the wet gel composite material at normal pressure, carrying out repeated impregnation 2-6 times, and finally conducting sintering at high temperature to obtain the composite material. The material is high in mechanical property, low in heat conductivity and low in density; and the preparation method is low in cost, high in safety and simple and flexible in preparation process.

The invention discloses a bandpass filter based on a substrate integrated non-radiative dielectric waveguide. The bandpass filter is implemented through adopting a slot coupling theory on a central dielectric strip of the substrate integrated non-radiative dielectric waveguide on the basis of three layers of circuits consisting of the three-layer substrate integrated non-radiative dielectric waveguide and transition circuits from coplanar waveguides to a slot line. Since surface current at the central dielectric strip is strong, size and position of through holes are reasonably designed, and the bandpass filter with passband being 0.8GHz and good frequency selectivity can be implemented. The bandpass filter based on the substrate integrated non-radiative dielectric waveguide can be implemented smoothly, the integration of a hybrid multi-layer circuit based on microwaves and millimeter waves is realized, the design of millimeter wave band circuits and millimeter wave band devices is facilitated, the manufacturing process is simple, and the cost is low.

The invention discloses a bismuth/bismuth-antimony extensional superlattice nanowire and a preparation method thereof. The nanowire is a bismuth/bismuth-antimony superlattice nanowire with the diameter of 30-120 nanometers, which is formed by extensionally connecting a bismuth nanowire and a bismuth-antimony nanowire, wherein the lengths of each segment of the bismuth nanowire and the bismuth-antimony nanowire are respectively 3-99 nanometers and 3-99 nanometers; and the bismuth-antimony nanowire contains 80-50 percent of bismuth and 20-50 percent of stibium. The preparation method comprises the following steps of: firstly, preparing an electrodeposition solution by using bismuth chloride, antimony chloride, hydrochloric acid, tartaric acid, citric acid, sodium chloride and glycerol; thenplacing a gold film plated porous alumina template as a cathode into the electrodeposition solution for electrodeposition under two pulse voltages alternately connected in series; and finally, placing the porous alumina template electrodeposited with the bismuth/bismuth-antimony extensional superlattice nanowire into an alkali solution to corrode the alumina template so as to prepare the bismuth/bismuth-antimony extensional superlattice nanowire. The bismuth/bismuth-antimony extensional superlattice nanowire can be widely used in the fields of thermo-electric generation, thermoelectric refrigeration, and the like; in addition, the method is easy to implement and suitable for large-scale industrialized production.