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310results about How to "Suitable for commercial production" patented technology

Surface processing technology for dental implant

The invention discloses a surface processing technology for a pure-titanium dental implant. The technology comprises the following steps: A, removing oil from the dental implant by ultrasonic cleaning; B, sandblasting the dental implant by white corundum to make the surface of the implant to be uniform gray in color and allow a three-dimensional porous structure to be formed on the surface of the dental implant; C, carrying out acid etching on the surface of the sandblasted dental implant with a mixed liquid with a certain concentration and a certain ratio of sulfuric acid to hydrochloric acid to allow gradually decreased multilevel scallops to be formed on the surface of the dental implant; and D, flushing and neutralizing the acid etched dental implant, and removing oil. According to the surface processing technology for the dental implant designed by the invention, the multilevel porous structure with biological activity is formed on the surface of the pure-titanium implant, so the biological activity of the pure-titanium implant is improved, the stability of the implant is improved, the bone combination speed of the dental implant is accelerated, the bone interfacial combination strength of the implant is enhanced, thereby the technology has the advantages of simple and high efficient technology, and low cost.
Owner:JIANGSU TRAUSIM MEDICAL INSTR

Preparation method for nitrogen-doped porous carbon supported non-noble metal electrocatalyst and electrocatalyst application

The invention discloses preparation method for nitrogen-doped porous carbon supported non-noble metal electrocatalyst. According to the method, magnesium oxide is taken as a hard template; mixture containing nitrogen ligands and polyacid is taken as a nitrogen source and a carbon source; mixture dispersion is carried out through an ultrasonic rotary evaporation method; carbonization is carried out through high temperature roasting; the template is removed through utilization of acid solution, thereby obtaining a porous carbon material; a non-noble metal macrocyclic compound and the porous carbon material are mixed through the rotary evaporation method; and the supported non-noble metal electrocatalyst is prepared through heat treatment and acid-washing. According to the method, the nitrogen-doped porous carbon material with a high specific surface area is taken as a carrier, thereby facilitating the dispersion of the metal-nitrogen/carbon in the non-noble metal macrocyclic compound and the mutual coordination effect between the carrier and the metal-nitrogen/carbon active site, so the oxygen reduction activity of the catalyst is greatly improved. The material has relatively high electrocatalytic activity for the oxygen reduction of a cathode of a fuel cell, the material has a potential application prospect and the commercial application process of the fuel cell is promoted.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI

Method for manufacturing surface enhancement Raman scatting substrate

The invention discloses a method for manufacturing a surface enhancement Raman scatting (SERS) substrate having ultra high performance. The method comprises the steps: firstly, selecting a cicada wing, a butterfly wing, a scarlet macaw feather or other biological micro structures as a basal plate, and simply cleaning, drying and shaping the biological micro structure basal plate; and then plating gold, silver or other precious metals on the biological micro structure basal plate by magnetron sputtering or ion beam sputtering or other precise film plating methods to produce the SERS substrate. The gap size of a micro-nano structure is precisely controlled by controlling the thickness of the plating film, and the micro-nano gap size can be controlled to be less than 10 nm. The manufactured SERS substrate has the outstanding advantages of large area, low cost, uniformity, environmental protection, ultra sensitivity, precisely controllable gap and the like. The environmental protection material is selected as the basal plate, the quite simple, mature and low-cost method is used for manufacturing the high performance SERS substrate which meets the needs of practical applications and theoretical researches, so that a powerful tool and a solid foundation are provided for the theoretical researches and the practical applications of an SERS effect.
Owner:NANKAI UNIV

Multifunctional ultrasonic microwave collaborative chemical reactor and method for preparing nano semiconductor chalcogenide by using same

The invention discloses a multifunctional ultrasonic microwave collaborative chemical reactor and a method for preparing a nano semiconductor chalcogenide by using the same. The multifunctional ultrasonic microwave collaborative chemical reactor comprises an ultrasonic generator, a microwave generator, a temperature/time/power display control device, a reaction vessel, a condensing device, a microwave resonator, a microwave shielding device, an air exhausting and air feeding device, and a reaction vessel supporting and lifting device. The chemical reactor has the advantages of uniform vibration, consistent action stressed by all the points in a sample medium, many varieties of selectable extraction solvents, wide range of targets, reduction of the binding force of the targets and sample substrates; accelerated process of the targets from solid phase to solvent phase, large processed sample amount and the like. The chemical reactor can overcome the phenomenon of overheat charring, and can obtain more uniform and better-quality products than single microwave reaction. The chemical reactor has wide application prospect in the fields of chemistry and chemical industry, pharmacy, materials, energy sources, food processing and the like.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Nitrogen-doped porous graphite and preparation method thereof

InactiveCN105621406AReduce processing costsMethod conditions are easy to meetCarbon layerPorous graphene
The invention discloses nitrogen-doped porous graphite and a preparation method thereof. The preparation method comprises the following steps of conducting low temperature heat treatment on a mixed aqueous solution of nitrate and a carbon source, so that a metal oxide hard template-thin carbon layer precursor is formed; conducting graphitization on the obtained metal oxide hard template-thin carbon layer precursor, so that the nitrogen-doped porous graphite is obtained. According to the method, raw materials are conventional materials, process cost is low, and conditions of the method are easy to meet; the novel template method is adopted for directly pyrolyzing saccharides organic matter, so that the nitrogen-doped porous graphite is obtained, and the process is quite simple and fast; the nitrogen-doped porous graphite is quite simple in operation, low in cost, high in yield and capable of being produced on a large scale, the less-layer porous graphite which has abundant surface pores, narrow in pore size distribution and high in specific surface area can be obtained, and the nitrogen-doped porous graphite and the preparation method thereof are applicable to such fields as supercapacitors, fuel-cell catalysts, electrocatalysis, lithium batteries, adsorption and gas separation.
Owner:SHANGHAI JIAO TONG UNIV

Electrochemical catalyst for oxygen evolution reaction and preparation and application of electrochemical catalyst

InactiveCN107308958AExcellent catalytic electrochemical oxygen evolution reaction effectImprove the efficiency of electrochemical water splittingPhysical/chemical process catalystsElectrodesHydrazine compoundPotassium hydroxide
The invention provides a preparation method of an electrochemical catalyst for oxygen evolution reaction. The preparation method includes: 1) adding cobalt salt and a nonionic surfactant polymer into water, mixing with stirring uniformly, adding a hydrazine hydrate, and incubating under a hydrothermal condition to obtain lamellar cobalt hydroxide, 2) adding the obtained lamellar cobalt hydroxide and thiomolybdate into N,N-dimethyl formamide, mixing by ultrasonic dispersion, and pyrolyzing the thiomolybdate under a solvothermal condition to obtain a non-amorphous-phase molybdenum sulfide layer on the surface of a lamellar base. The invention further provides the electrochemical catalyst for oxygen evolution reaction and application of the electrochemical catalyst. The preparation method has the advantages that the prepared cobalt-molybdenum compound material in an alkaline solution of potassium hydroxide has an excellent effect in catalyzing electrochemical oxygen evolution reaction, electrochemical water splitting efficiency can be improved effectively, and by adopting a hydrothermal method and a solvothermal method to prepare the catalysts, the preparation method is simple and easy to implement and high in controllability.
Owner:CAPITAL NORMAL UNIVERSITY

HA/TiO2 layer on surface of titanium alloy and preparation method thereof

The invention provides an HA/TiO2 layer on the surface of a titanium alloy. The binding strength of the HA/TiO2 layer and a titanium alloy substrate is 15-28MPa. The HA/TiO2 layer is characterized by comprising a porous TiO2 layer wrapped on the surface of the titanium alloy and an HA layer growing on the TiO2 layer. The invention further provides a method of preparing the HA/TiO2 layer on the surface of the titanium alloy. The method is characterized by comprising the following steps: S1, preparing a micro-arc oxidation treatment solution; S2, carrying out micro-arc oxidation treatment; S3, preparing an electrochemical deposition solution; S4, carrying out electrochemical deposition. The HA/TiO2 layer on the surface of the titanium alloy and the titanium alloy substrate have high binding strength which satisfies the demand on medical application. The preparation method of the HA/TiO2 layer comprises the following steps: firstly, forming a calcium and phosphorus-containing porous TiO2 layer on the surface of the titanium alloy by virtue of the micro-arc oxidation method; then, preparing the HA layer on the surface of the TiO2 layer by the electrochemical deposition method. The HA biological active coating is high in binding strength with the substrate, fast in growing speed and suitable for commercial production.
Owner:UNIV OF SHANGHAI FOR SCI & TECH

Method for improving dispersibility of single-walled carbon nanotube in aqueous solution

The invention belongs to the field of materials chemistry and in particular relates to a method for improving the dispersibility of a single-walled carbon nanotube in aqueous solution. The method comprises the following detailed steps of: dispersing a single-walled carbon nanotube purification sample in the aqueous solution of ethanol, and performing ultrasonic dispersion on the sample to uniformly suspense the sample in the solution; quickly cooling the obtained solution by using liquid nitrogen as a cooling medium and continuously supplying the cooling medium to guarantee that the cooling temperature of the sample reaches -50 to -190 DEG C; at normal temperature and under normal pressure, placing the solid sample in a closed device in which a high-speed blade rotates, wherein the rotation speed is 22,500rpm, the rotation time is 1 minute and the crushing process is repeated for 1 to 7 times; and filtering and drying the obtained sample to obtain the single-walled carbon nanotube aqueous solution with relatively good water solubility finally. In the invention, a physical method is adopted at normal temperature and under normal pressure, so that the structure of the single-walled carbon nanotube in aqueous solution is not damaged in a treatment process; the ethanol serving as a raw material is simple and available and causes no pollution to environment; and the method has the advantages of simple process and easy processing, so that the method is suitable for commercial production.
Owner:TONGJI UNIV

Ferritic stainless steel containing rare earth element yttrium for solid-oxide fuel battery

The invention relates to ferrite stainless steel which includes rare earth element yttrium and is used for a solid oxide fuel cell. The invention is characterized in that the invention comprises the following elements according to the mass percent: Y is 0.01 to 0.10 percent, C is lower than 0.03, Mn is 0.40 to 1.20 percent, Ni is 0.20 to 0.26 percent, Cr is 14.00 to 26.00 percent, Mo is 0.02 to 2.00 percent, W is 0.01 to 0.10 percent, P is lower than 0.04 percent, S is lower than 0.03 percent, Si is 0.01 to 0.05 percent, the residual is Fe; the thermal expansion coefficient is in the range of (11.8 to 13.0) is multiplied by 10 <-6> K at 25-1000 DEG C, and preferred in the range of (12.0 to 12.5) is multiplied by 10 <-6> K, and ferrite stainless steel alloy material is the alloy material which is particularly suitable for connecting and encapsulating the negative electrode and the positive electrode of the moderate temperature type solid oxide fuel cell, or can be used as the lighter of a vehicle engine, or can be used for high temperature boiler heating parts. The alloy is easy for the domestic industrial smelting and the processing formation, the manufacture cost is low, the alloy is suitable for the commercialization production, and has very high promotion and application value.
Owner:JILIN INST OF CHEM TECH

Preparation method of temperature controlled drug release polymer microsphere material

The invention discloses a preparation method of a temperature controlled drug release polymer microsphere material. The steps consist of: dissolving chitosan in a lactic acid solution, adding succinic anhydride to carry out reaction so as to obtain water-soluble succinyl chitosan; dissolving the product in a buffer solution, and adding furfurylamine-2-furanomethylamine dropwise, then adding carbodiimide to carry out reaction so as to obtain furan chitosan; dissolving sodium alginate in water, and adding a sodium periodate solution dropwise to carry out reaction so as to obtain aldehyde sodium alginate; dissolving aldehyde sodium alginate in water, and adding 4-(4-N-maleimide phenyl)butyrate to carry out reaction so as to obtain maleimide sodium alginate; mixing a furan chitosan aqueous solution with a maleimide sodium alginate aqueous solution according to an equivoluminal ratio, then adding the mixture into paraffin oil containing an emulsifier span 80 to perform ultrasonic emulsification; subjecting the emulsion to stirring volatilization, then pouring the emulsion into isopropanol to precipitate polymer microspheres, and performing cleaning and freeze drying, thus obtaining the product. The invention significantly improves the use safety of the microsphere material, and the polymer microsphere material has important application value in the aspects of drug controlled release and gene therapy.
Owner:NANJING UNIV OF SCI & TECH

Organic light emitting device and manufacturing method thereof

The invention discloses an organic light emitting device which is provided with a transparent substrate, a first electrode, an organic function layer, a second electrode and an optical coupling film layer. The first electrode, the organic function layer and the second electrode are arranged on one face of the transparent substrate and sequentially stacked, and the optical coupling film layer is arranged on the other face of the transparent substrate. The optical coupling film layer is provided with a layer body and a patterned layer arranged on the surface of the layer body; or the optical coupling film layer is provided with a layer body and micro holes distributed in the layer body or distributed in the surface of the layer body; or the optical coupling film layer is provided with a layer body, micro holes distributed in the layer body or distributed in the surface of the layer body, and a patterned layer arranged on the surface of the layer body. A manufacturing method of the organic light emitting device comprises the steps of (a) manufacturing the first electrode, the organic function layer and the second electrode on one face of the substrate in sequence, and (b) manufacturing the optical coupling film layer on the other face of the substrate. The organic light emitting device has the advantages of being easy to process, and good in light taking-out effect.
Owner:GUANG ZHOU NEW VISION OPTO ELECTRONICS TECH

Preparation method of hydrogenation catalyst for nitrobenzene and derivatives thereof

The invention relates to a preparation method of a hydrogenation catalyst for nitrobenzene and its derivatives. A carbon material is functionally modified with a high-molecular polymer and then loadedwith noble metal. The preparation method of the catalyst comprises the following steps: (1) the carbon material and the high-molecular polymer undergo ultrasonic treatment on in a certain concentration of a salt solution at a certain temperature for 0.5 to 6 hour to obtain a functionalized carbon material; (2) noble metal particles with a certain size distribution are prepared from the salt solution of the noble metal under the action of a protective agent and a reducing agent; (3) the aqueous solution or the organic solution of the obtained noble metal particles undergoes ultrasonic treatment for 10 min and is stirred for 2-12 h and then loaded on the functional group modified carbon material so as to obtain a noble metal-loaded catalyst. The preparation method of the catalyst is simple,effective and green and environmentally-friendly. After reduction by the reducing agent, the uniformly-dispersed noble metal-loaded catalyst with a certain size distribution is obtained. In addition,the catalyst has a broad application prospect in the field of catalysis of nitrobenzene and its derivatives.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI

Method for continuously synthesizing single-wall carbon nano tube by high temperature chemical vapor deposition method

The invention relates to a method for continuously synthesizing a single-wall carbon nano tube by a high temperature chemical vapor deposition method, belonging to the technical field of chemosynthesis. The method comprises the following specific steps: introducing inert gas in an alundum tube reactor and heating to 1300-1500 DEG C; introducing a mixing solution containing a catalyst, a carbon source and an additive, thiophene and inert gas in the alundum tube reactor; collecting a product at the opening of the alundum tube reactor; paving the product in an alundum boat, placing the alundum boat in the alundum tube reactor for heat treatment, heating to 400-500 DEG C at a speed of 10 DEG C/min and keeping the temperature for 1h; sealing the two ends of the alundum tube, introducing inert gas, heating to 800-900 DEG C at a speed of 10 DEG C/min and keeping the temperature for 1h; introducing argon, cooling to room temperature, and enabling the product to react with diluted hydrochloric acid; and filtering, washing and drying. The raw materials are simple and easily obtained and have no obvious inflammable danger; the product is easy to collect and has high yield; the device is simple and can realize continuous operation; and the invention has low cost and no environmental pollution and can be applied to large-scale production.
Owner:TONGJI UNIV
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