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351results about How to "Strong combination" patented technology

Method for processing high-temperature alloy furnace tube

ActiveCN101565807AStrong combinationMitigation of catalytic cokingSolid state diffusion coatingProduct gasMetallurgy
The invention relates to a method for processing a high-temperature alloy furnace tube, which comprises the following steps: controlling the pressure of low-oxygen partial pressure gas to 0-3 atmospheric pressure; introducing the low-oxygen partial pressure gas into an atmosphere furnace provided with the high-temperature alloy furnace tube; raising the temperature to between 600 and 1,100 DEG C; keeping the temperature for 5 to 80 hours; and forming an oxidized protective layer on the surface of the high-temperature alloy furnace tube to obtain the processed high-temperature alloy furnace tube, wherein the low-oxygen partial pressure gas comprises one or two kinds of H2 and CO, and water vapor accounting for 0.17 to 2 percent of the volume fraction of the low-oxygen partial pressure gas. The method for processing the high-temperature alloy furnace tube is adopted to process a furnace tube of a hydrocarbon cracking furnace and the like, so that the compact and stable oxidized protective layer on the surface of the furnace tube, and the requirement for long-term use can be met; and the method can inhibit or retard the phenomena of catalysis and coking, reduces the carburization degree of the furnace tube, and prolongs the decoking cycle and the service life of the furnace tube.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)

Lithium ion battery anode and preparation method thereof

The invention discloses a lithium ion battery anode and a preparation method thereof. The anode utilizes a carbon nano pipe film formed by a carbon nano pipe macroscopic pipe as a current collector, and an anode material layer is formed on the carbon nano pipe film. Compared with the traditional aluminum foil current collector anode, the lithium ion battery anode has the advantages that the weight of the lithium ion battery anode prepared by the method is light, and the anode material layer and the current collector are firmly combined. The preparation method comprises the following steps of preparing a high strength carbon nano pipe on a glass substrate by utilizing a carbon nano pipe macroscopic pipe continuum generated by a reactor port, generating the anode material layer on the carbon nano pipe film layer, separating the carbon nano pipe film layer with the anode material layer from and the glass substrate, and mounting a pole ear on a pole piece. Under the same size, the carbon nano pipe film is far lighter than the aluminum foil, the weight of the saved part can be replaced by the anode material, and the capacity of the battery is 15%-50% higher than that of a battery which takes the aluminum foil as an anode current collector. The lithium ion battery anode is low in cost, high in generation efficiency, simple in equipment, capable of realizing semicontinuous operation and suitable for mass production.
Owner:北京旭江科技有限公司

Preparation method of high-performance anti-fingerprint agent

The invention discloses a preparation method of a high-performance anti-fingerprint agent. The preparation method comprises the following steps that firstly, allyl terminated perfluoropolyether reactswith a siloxane compound containing silicon-hydrogen bonds for obtaining a perfluoropolyether silane compound containing silicon-hydrogen bonds, the obtained product reacts with methyl vinyl dichlorosilane for obtaining perfluoropolyether-silane with dichlorosilane modified terminal groups, the obtained perfluoropolyether-silane with dichlorosilane modified terminal groups reacts with allyl magnesium bromide for obtaining terminal allyl modified perfluoropolyether-silane with polyfunctional groups, the obtained terminal allyl modified perfluoropolyether-silane with polyfunctional groups reacts with methyldichlorosilane for obtaining dichlorosilane modified perfluoropolyether-silane, dendritic terminal allyl modified perfluoropolyether-silane is obtained by repeated reaction; and then theobtained dendritic multi-functional perfluoropolyether-silane reacts with a siloxane compound containing silicon-hydrogen bonds for obtaining the dendritic perfluoropolyether alkoxy silane compound with polyfunctional groups. The anti-fingerprint agent prepared by the method provided by the invention has a good hydrophobic oleophobic property and excellent antifouling property, and has excellent bonding fastness to glass substrates, and the wear resistance and the durability are greatly improved.
Owner:QUZHOU FLUORIDE & SILICON RES INST

Winding evaporation type vacuum coating machine

The invention belongs to the technical field of vacuum coating, and especially relates to a winding evaporation type vacuum coating machine. The vacuum coating machine comprises a vacuum chamber, and a rolling evaporation system, a shielding system and a motor which are arranged in the vacuum chamber. An unwinding shaft is arranged at the top left corner of the vacuum chamber, a winding shaft is arranged at the top right angle of the vacuum chamber, a first evaporation coating drum and a second evaporation coating drum are arranged between the unwinding shaft and the winding shaft side by side, and are positioned below the unwinding shaft and the winding shaft. A first aluminum evaporator is positioned just below the first evaporation coating drum, and a second aluminum evaporator is positioned just below the second evaporation coating drum; and the shielding system is positioned at the bottom right corner of the vacuum chamber, the shielding steel band of the shielding system traverses between the second aluminum evaporator and the second evaporation coating drum, and the aluminum recovery device of the shielding system is arranged at the bottom right of the shielding system. Each of the winding evaporation system and the shielding system is connected with the motor. The vacuum coating machine has the advantages of one-time completion of the coating and edge thickening, long storage time, stable and unchanged performances, simple operation and production efficiency increase.
Owner:郑州华翔电子信息技术有限公司

Infrared radiation reinforced composite ceramic fiber board and preparation method

ActiveCN103640284AHigh strengthStrong combinationCeramic layered productsAluminium silicateComposite ceramic
The invention discloses an infrared radiation reinforced composite ceramic fiber board. The composite ceramic fiber board is formed by compounding an aluminium silicate-based ceramic fiber board layer and a high infrared emittance layer, wherein the thickness of the high infrared emittance layer is 0.1-2mm, and bulges in periodic array distribution are arranged on the surface of the high infrared emittance layer. A method for preparing the infrared radiation reinforced composite ceramic fiber board disclosed by the invention comprises the steps that powder and gel materials are respectively prepared at first, then a wet preform body of the high infrared emittance layer with the periodic array structures on the surface is made by mixing the powder and the gel materials, finally, the surface of the ceramic fiber board is painted and covered with a glue stock and then the ceramic fiber board is reversed on the wet preform body, and the product is prepared after heating and pressuring. The infrared radiation reinforced composite ceramic fiber board disclosed by the invention has the advantages of being high in strength, firm in combination between the high infrared emittance layer and the aluminium silicate ceramic fiber board layer and capable of working at the temperature above 1100 DEG C for a long time, and having the hemispherical total emittance up to 0.91 at 800 DEG C and the comprehensive energy-saving efficiency above 10%.
Owner:重庆埃泰克能源科技有限公司 +1

Method for preparation and regulation of surface-roughness ZnO nano-cone or nanorod array

The invention discloses a method for preparation and regulation of a surface-roughness ZnO nano-cone or nanorod array. The method comprises the following steps that: (1) a substrate is selected and cleaned; (2) a magnetic-control sputtering apparatus performs sputtering at a normal temperature on the substrate to form a compact ZnO seeding layer with good crystallinity; (3) the ZnO nano-cone or nanorod array grows on the substrate with a hydrothermal method; and different acid or alkali corrosive liquids are chosen, and the concentration and corrosion time of the corrosive liquids are adjusted to form a surface-roughness nanometer structure with different corrosion degrees. According to the invention, the simple method is adopted for manufacturing the complicated nanometer structure, the range of appearance regulation is large, the operation is simple, the regulation and control are easy, the repeatability is good, the surface roughness of a nano-cone or nanorod can be regulated effectively, the specific surface area is enlarged, and the properties such as surface activity are improved, so that the method is greatly beneficial to improving transducer sensitivity more effectively and enhancing photocatalysis efficiency as well as light extraction efficiency of an LED (light-emitting diode).
Owner:SHANDONG UNIV

Workpiece with diamond/graphene composite lubricating film and preparation method thereof

The invention provides a workpiece with a diamond/a graphene composite lubricating film. The workpiece comprises a workpiece body and a diamond/a graphene composite lubricating film arranged on the surface of the workpiece body, wherein the diamond/graphene composite lubricating film comprises an ultra-nano diamond film arranged on the surface of the workpiece body and a graphene layer is arrangedon the ultra-nano diamond thin film; and the diamond/graphene composite lubricating film can obviously improve the friction resistance of the workpiece. The invention further provides a preparation method of the workpiece with the diamond/the graphene composite lubricating film. The preparation method comprises the following steps that the ultra-nano diamond thin film is deposited on the workpiece body, and then a transition metal layer is deposited on the surface of the ultra-nano diamond thin film; the workpiece body deposited with the transition metal layer and the ultra-nano diamond filmis placed in a cavity of a hot wire vapor deposition chamber for annealing treatment, the diamond/graphene composite lubricating film is manufactured on the surface of the workpiece body, the annealing temperature is 1000-1300 DEG C, and the annealing time is 1-3 minutes
Owner:SHENZHEN INST OF ADVANCED TECH

A preparation method of high-performance sintered Nd-Fe-B permanent magnet material

The invention relates to a preparation method of a high-performance sintered Nd-Fe-B permanent magnet material, belonging to the field of rare earth permanent magnet material. The quaternary and abovequaternary rare earth alloy films are deposited on the surface of pretreated Nd-Fe-B magnet by magnetron sputtering. The homogenization, grain boundary diffusion and low temperature tempering are used as diffusion sources to improve the boundary structure of the magnet, so that the coercivity of the magnet is greatly increased and the remanence is kept basically unchanged. The composition of thequaternary and above quaternary rare earth alloy film is LRE 100-X-Y-ZHRExMyAlz (1 <= x <= 40, 1 <= y <= 20, 1 <= z <= 20), wherein LRE is one or more of the light rare earth elements such as Y, La, Ce, Pr, Nd, HRE is one or more of the heavy rare earth elements such as Tb, Dy, Ho, and M is one or more of the alloy elements such as Cu, Fe, Co, Ga, Zr, Zn, Mn, and Mg. The rare earth alloy thin filmprepared by the invention is uniform, compact and strong in adhesion as diffusion source, the quantity is continuously controllable, and the consistency of magnetic properties of the magnet after diffusion treatment is good; It can reduce the amount of rare earth and is suitable for industrial production.
Owner:UNIV OF SCI & TECH BEIJING
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