250results about How to "Compact distribution" patented technology

The invention relates to a g-C3N4/TiO2@montmorillonite photocatalyst and a preparation method thereof, and belongs to the field of deep processing of nonmetallic mineral materials and environment engineering. With organic montmorillonite interlayer space as a micro reaction area, precursors of g-C3N4 and TiO2 are induced by a modifying agent in the interlayer space to enter a montmorillonite interlayer, nanometer g-C3N4/TiO2 heterojunction is generated in the montmorillonite interlayer through further hydrolysis, dehydroxylation and crystallization, and then the visible-light response montmorillonite-based composite photocatalysis material is obtained. By means of the method, the combination of montmorillonite and the visible-light response g-C3N4/TiO2 heterojunction is achieved, the pollutant adsorption and capture performance of the material and the dispersibility of the catalyst are improved through the carrier effect of montmorillonite. The load type photocatalysis material has excellent photocatalysis activity under visible light, and has great potential application value in the field of deep processing of organic waste water.

The invention relates to an integrated gate commutated thyristor (IGCT) three-level power module belonging to the technical field of high-power semiconductor switches. The IGCT three-level power module comprises an IGCT, an antiparallel flywheel diode, a left metal frame weld assembly, a right metal frame weld assembly, a pressing mechanism, a square water-cooling radiator, an insulating fixed pin, an insulating draw rod, an insulating hook pin, a P phase leading-in bus bar, a P phase leading-out bus bar, an M phase leading-out bus bar, an N phase leading-out bus bar, an N phase leading-in bus bar and the like. The invention adopts a structural style of three mutually parallel power strings, and each power string realizes the compression joint of electric/electronic components with the corresponding connecting bus bars, the square water-cooling radiator and insulators by the pressing mechanism. In the invention, absorption circuits are compactly arranged, thereby decreasing the mutual stray inductance; and a waterway interface and a power circuit interface are separated and are arranged respectively in the front and at the back.

Provided is a wire arrangement structure for single-layer indium tin oxide (ITO). Touch control electrodes of two types are distributed on an ITO layer, first touch control electrodes are in unidirectional sawtooth shapes, second touch control electrodes are in bidirectional sawtooth shapes, at least one second touch control electrode is positioned in a gap between two first touch control electrodes, sawteeth of two adjacent electrodes are meshed mutually, and cross points between every two adjacent teeth in the same direction of the second touch control electrodes are arranged on the same line. Compared with the prior art, a capacitance touch screen is provided with a plurality of touch control electrodes on the ITO layer, thereby being simple in structure, reducing ITO layers and reducing cost of the touch screen. In addition, due to the sawtooth-shaped touch control electrodes, the electrodes on the ITO layer are distributed compactly, the edges are led to have good sensing capability, and edge accuracy and linearity of the ITO layer are improved.

The invention provides a launch section vibration attenuation and orbital section vibration isolation integrated load supporting device which can realize the variable stiffness requirements of high stiffness and high damping in a launch section and low stiffness and low damping in an orbit section, can realize launch section vibration attenuation and orbital section vibration isolation function integration and meanwhile has the very high reliability. The launch section vibration attenuation and orbital section vibration isolation integrated load supporting device comprises a load platform, a vibration isolation module and a connection support module. The upper and lower ends of the vibration isolation module are connected to the load platform and the connection support module, the vibration isolation module is of a closed parallel structure, and the requirements of the launch section for the large load and the high reliability of the mechanical environments can be realized. Meanwhile,symmetrical and inclined support design is adopted, the three-dimensional equal stiffness and equal fundamental frequency function in a space coordinate system is achieved, and the good stability is achieved. By bidirectionally adjusting the compression of a gel vibration isolation component, the variable stiffness design requirements are met, and the strong adaptability to the complex space mechanical environments is achieved. The supporting device is light in weight, small in size, simple in structure, low in manufacturing cost and broad in application prospect.

The invention discloses a preparing method of a metal-graphene composite electroplating material. Graphene serves as an anode, a base body to be electroplated serves as a cathode, main salt and an additive are added into a graphene stripping agent to obtain an electrolyte, and under the conditions that the temperature ranges from 25 to 75 DEG C, the voltage ranges from 2.5 to 5 V, and the currentdensity ranges from 5 to 20 mA.cm<-2>, the anode and the anode are placed in to the electrolyte to be subjected to codeposition for three to five hours, and a metal-graphene composite coating is obtained. Agglomeration of graphene in the electrolyte and the coating material can be effectively prevented, and the prepared graphene doped metal base composite electroplating material is compact, flat and smooth in surface and free of agglomeration.

The invention belongs to the technical fields of chemical organic synthetic materials and chemical process, and relates to an expoxy resin polyamine curing agent and a waterborne epoxy curing agent emulsion. The expoxy resin polyamine curing agent with hydrophilic epoxy resin is obtained by modifying polyamine; the expoxy resin polyamine curing agent is prepared into the curing agent emulsion through a reverse inversion method, wherein. According to the invention, an expoxy resin chain segment is introduced to the curing agent emulsion, so that the curing agent emulsion has good compatibility with an expoxy emulsion, thus the solidification uniformity curing is promoted, a solidifying cured membrane is uniform and compact, and the comprehensive mechanical property of the solidifying cured membrane is improved.

The invention discloses a preparation method of a graphene/stannic oxide quantum dot composite electrode material for a lithium ion battery. In the sample preparation process, that graphene-supported stannic oxide quantum dots are synthesized under relatively mild experiment conditions by utilizing a wet chemical method, and urea is adopted as a reducing agent to reduce graphite oxide, so that the preparation method has the advantages of simple and controllable reaction conditions and low production cost; by introducing graphene, not only can the conductivity of the composite material be improved but also volume change in the stannic oxide charge-discharge process can be effectively buffered; therefore the composite material shows good cycling stability.

The invention relates to a method for preparing a nanometer porous nickel-iron-sulfur alloy having a high catalytic oxygen evolution property through electrodeposition in a eutectic type ionic liquid, and belongs to the technical field of material preparation. The method includes fully mixing a quaternary ammonium salt with an alcohol or an amide to obtain the eutectic type ionic liquid, then adding a nickel salt precursor, an iron salt precursor and a sulfur salt precursor into the eutectic type ionic liquid, fully stirring and mixing the mixture to obtain an ionic liquid iron salt-nickel salt-sulfur salt composite electrolyte, subjecting a copper or nickel substrate that is adopted as a working electrode to repeated soaking with dilute hydrochloric acid and absolute ethanol, washing the working electrode with deionized water, then drying the working electrode, keeping the working electrode for later use, performing constant-potential electrodeposition by adopting a three-electrode system, washing the working electrode substrate after the electrodeposition with absolute ethanol and distilled water, and drying the working electrode substrate, and then a nanometer porous nickel-iron-sulfur alloy material film can be obtained on the surface of the working electrode substrate. A nickel-iron-sulfur alloy nanometer porous material having a high catalytic oxygen evolution property can be prepared by electrodeposition through the method.

The invention relates to the field of environmental protection equipment, in particular to a flue gas denitrification device used for a coal-fired boiler. The flue gas denitrification device comprisesa spray tower, an oxidation system, a spraying system and a circulating system, wherein the spray tower comprises a tower body and an internal core, a flue gas inlet pipe is connected to the bottom of the tower body, and the top of the tower body is connected with a flue gas outlet pipe; the oxidation system comprises an ozone generator and an ozone ejector which is arranged in the flue gas inletpipe and connected with the ozone generator; the spraying system comprises a liquid tank, an absorption liquid, a spraying pipe and a plurality of nozzles, the liquid tank is distributed on the bottom of the tower body, the spraying pipe is communicated with the liquid tank through a circulating pump, and the nozzles are arranged on the spraying pipe; the circulating system comprises a separator,the inlet end of the separator is connected with the liquid tank through a first liquid conveying pump, the salt liquid outlet end is connected with a waste liquid treatment device through a second liquid conveying pump, the absorption liquid outlet end is connected with a liquid storage tank used for storing the absorption liquid through a third liquid conveying pump, and the liquid storage tankis further connected with the liquid tank through a fourth liquid conveying pump. The flue gas denitrification device is high in denitrification efficiency, low in cost and facilitating environment friendliness.

This invention discloses a method for increasing the service life of thermal barrier coating layer by surface modification of metal bonding layer. The method comprises: washing and sand-blasting the matrix surface, depositing a metal bonding layer of MCrAlY series alloy onto the matrix surface by supersonic flame spray or plasma spray, performing surface modification on the metal bonding layer by supersonic coolant air injection of Al2O3 particles, and depositing conventional ZrO2-Y2O3 ceramic surface layer onto the metal bonding layer by plasma spray to obtain the thermal barrier coating layer. The method utilizes supersonic coolant air injection of Al2O3 particles to change the surface grain/particle structure, surface morphology and surface stress of the metal bonding layer. The method can realize finer surface grains/particles, and more uniform composition distribution, which can improve the thermal shock resistance of the thermal barrier coating layer, and increase its service life.

The invention discloses a credible and incredible user recognizing method based on a feedforward neural network. The method aims to solve the problems that in the prior art, precision is low, recognition bases are not sufficient, flexibility is poor and social network analysis granularity is rough. The method includes the steps of (1) obtaining a special user and determining users contained in a training set, (2) analyzing and quantifying user characteristics so as to represent the users as user characteristic vectors, (3) building the feedforward neural network, (4) training the feedforward neural network, and (5) achieving credible and incredible user recognition through the trained feedforward neural network. The credible and incredible user recognition includes the steps of (1) obtaining user information in a social network, (2) quantifying the user information to generate the user characteristic vectors, and (3) inputting the user characteristic vectors into the feedforward neural network and recognizing credible users and incredible users according to output values of output nodes.

The invention discloses a preparation method of a Ni-SiC compound coating on the surface of an aluminum alloy. The preparation method adopts an anode type surfactant which is hexadecyl trimethyl ammonium bromide for replacing a cathode type surfactant which is lauryl sodium sulfate adopted by the invention at present. The preparation method is characterized by increasing the concentration of an anode activator NiCl2 while reducing current density and the concentration of silicon carbide in a plating solution, obtaining a fine and dense compound coating at an electroplating rate of 1-2 micron per minute, stirring by using air with volume flow being 4-7L/min and fully dispersing the silicon carbide, simultaneously adding CTAB to improve the wettability of the silicon carbide and obtain a fine and dense compound coating with high content of uniformly-dispersed silicon carbide. Through the preparation method of the Ni-SiC compound coating on the surface of the aluminum alloy, the technical problem of low tensile performance and low abrasion resistance of the aluminum alloy can be solved; the Ni-SiC compound coating with high adhesion strength, high content of uniformly-distributed hard silicon carbide particles, high hardness and high abrasion resistance can be prepared on the surface of the aluminum alloy.

The invention relates to an oxide-enhanced high heat input welding steel plate. The steel plate comprises the following chemical components in percentage by weight: C less than or equal to 0.10%, Si less than or equal to 0.20%, 1.20-1.80% of Mn, 0.01-0.10% of Ti, Alt less than or equal to 0.01%, 0.001-0.005% of Als, 0.0005-0.0030% of Mg, N less than or equal to 0.006%, 0.0010-0.0050% of O and the balance of Fe and part alloy elements and unavoidable impurities. The steel plate disclosed by the invention has the advantages that the proportion relationship among the elements of Ti, Al, Mg, O and N is reasonably controlled to ensure that a large number of TiOx-MgAl2O4 composite oxide particles with the size of 0.2-2.0 micrometers are formed in the steel plate, so that the welding heat input that the steel plate can bear is increased to 600-1000kJ/cm and the impact energy of the welding heat-affected zone at the temperature below 60 DEG C can be guaranteed to be greater than or equal to 100J.

The invention discloses an unknown malicious traffic active detection system and method based on deep embedding. The system comprises a preprocessing module, a deep embedding module, an optimal boundary search module and a detection module. The preprocessing module represents the network flows with different lengths in each application as a flow matrix with a fixed size; the deep embedding moduletakes the flow matrix output by the preprocessing module as input in a training stage and learns nonlinear mapping by training a twin convolutional neural network, so that in an embedding space afterthe nonlinear mapping, network flow generated by the same application is distributed more compactly, and network flow generated by different applications is distributed more discretely; in a test stage, a to-be-identified flow matrix is mapped to an embedding space by using the trained convolutional neural network; the optimal boundary search module is used for searching an optimal classificationhyperplane for the network flow of each known category application in the embedded space, and finally a classifier is constructed; and the detection module is used for judging whether the network flowto be identified is from an unknown malicious application or not based on the classifier obtained by the optimal boundary search module.

The invention relates to a method for fixing biometric identification molecules to a biochip. The method comprises the following steps: (1) carrying out surface hydroxylation on the biochip; (2) carrying out silanization on the surface-hydroxylated biochip by using a silanization reagent containing a succinic anhydride group; (3) hydrolyzing the succinic anhydride group of the surface of the silanized biochip so as to form a carboxyl group; (4) activating the carboxylated biochip by using 1-(3-dimethylaminopropyl)-3-ethyl carbodiimide hydrochloride and N-hydroxyl succinimide; and (5) connecting the biometric identification molecules to the surface of the activated biochip, thereby obtaining the biochip with the surface modified with the biometric identification molecules. According to the method, by adopting the silanization reagent containing the succinic anhydride group, the amino-containing biometric identification molecules can be conveniently and simply connected, so that the biometric identification molecules can be arranged in an oriented manner, a uniform and dense unimolecular structure is formed, and the identification efficiency of the biometric identification molecules is increased; and meanwhile, non-specific adsorption is avoided, so that the detection effect of the biochip is effectively improved.

The invention belongs to the field of astronomical optical observation, and particularly relates to a spectrum broadening method and a spectrum broadening device based on a digital micromirror device(DMD). The spectrum broadening method comprises the steps of: firstly, subjecting a target spectrum to chromatic dispersion to a row or column direction of the digital micromirror array DMD, wherein the row or column direction of the DMD is consistent with a row or column direction of a detector; secondly, segmenting the spectrum subjected to chromatic dispersion along row pixels or column pixelsof the detector according to different spectral bands by means of the digital micromirror device DMD and reflecting the segmented spectral bands to different positions on the same plane, so as to realize spectrum broadening; thirdly, compressing and collimating the segmented different spectral bands to enter into an interference module to obtain interference fringes; and finally, performing secondary chromatic dispersion on the interference fringes in the row or column direction of the detector to realize high-precision light splitting, so as to obtain high-resolution spectral interference fringes. The spectrum broadening method and the spectrum broadening device realize the spectrum broadening of the detection system while avoiding the problems of fringe bending, contrast reduction and the like caused by cross chromatic dispersion, and solves the problem that reflected surfaces are not on the same image plane during spectral narrow band segmentation under the condition of multi-targetdetection by adopting an image segmentation device broadening method.

The invention discloses a sintered candy glaze with a concave and convex texture and a preparation method of a porcelain tile. A glaze of the sintered candy glaze with the concave and convex texture comprises printing ink and a transparent frit, wherein the mass ratio of the printing ink to the transparent frit is (2.5-3.5):(0.5-1.5); and the transparent frit is regular spherical particles. According to the sintered candy glaze with the concave and convex texture, the concave and convex texture of the burnt brick surface effect is finer; the decoration effect is more abundant; and the preparation method of the porcelain tile has the advantages of being simple in preparation technology, simple in operation, free of polishing treatment, high in stereoscopic impression of the brick surface effect and low in defective rate.