70results about How to "Realize batch preparation" patented technology

The invention discloses a differential melt electro-blowing spinning device and technology for preparing nanofibers in batches, and belongs to the field of electrostatic spinning. The device mainly comprises an extruder, a filter screen, a melt metering pump, a spinning manifold, an airflow heating device, an air compressor, an upper plate electrode, a lower plate electrode, a high-voltage electrostatic generator, a guide air knife, a hot rolling device, a receiving device, a screen spreading belt and an air draft system. An outlet of the extruder is connected with the filter screen, and the melt metering pump is connected between the filter screen and the spinning manifold through a flange. Airflow is divided into two portions through a flow divider to be connected to the spinning manifold; after melt is divided and guided in flow through the spinning manifold, a thin uniform-flowing melt layer is obtained at the lower end of a wavy flow guide plate; under the high-voltage electrostatic action, the melt layer forms a plurality of Taylor cones in a self-organization manner, the Taylor cones are stretched and split continuously under the conditions of high-speed airflow and high-voltage electrostatics, and superfine fibers are formed at the receiving end of the screen spreading belt by means of curing. By the aid of the device and technology, difficulties of high viscosity of polymers, low yield, complicated devices and the like are overcome, and industrial production of differential melt electro-blowing spinning can be achieved.

This invention relates to a single-way broad band mm wave plane slot antenna, in which, a coplanar waveguide feed line and a rectangle slot radiation unit are set at a same plane on a side of a microwave base, a beam guiding slot is set on the other side of the base, the rectangle cut-off slot is set under the base closing to the rectangle slot radiation unit on a supporting structure, the beam guiding slot, the rectangle radiation slot unit and three-layer or over rectangle cut-off slots are concentric forming similar rectangles getting smaller from the top, this invented coplanar waveguide feed line and impedance can be adjusted easily and the feed part and the radiation unit are coplanar, the rectangle slot radiation unit can reach the requirement of broadband and single-way radiation can be realized by three-layer or more coplanar rectangle cut-off slot reflection structure steadily reduced at the back and a positive wavebeam leading structure.

The invention relates to hydroxyapatite overlength nanowire flameproof paper with a waterproof function. The hydroxyapatite overlength nanowire flameproof paper with the waterproof function has super-hydrophobicity and fireproof and flame-retardant functions. The main component of the flameproof paper is hydroxyapatite overlength nanowire. The product also contains fatty acid salt or a perfluorinated compound modified on the hydroxyapatite overlength nanowire. The fatty acid salt or the perfluorinated compound carries out surface modification on the hydroxyapatite overlength nanowire. As hydroxyapatite overlength nanowire has rich surface reactive groups, the hydroxyapatite overlength nanowire is easy to undergo surface modification. Thus, the hydroxyapatite overlength nanowire is easy to combine with the fatty acid salt or the perfluorinated compound such that the hydroxyapatite overlength nanowire flameproof paper is endowed with an excellent waterproof function.

The invention is concerned with a kind of a kind of coplanar wave-guide feeding broad-band entelechy millimeter wave plane gap antenna, belonging to communication technology field, relating to coplanar wave-guide feeding line, circular radiation gap, micro-disturbing short circuit modulation spur track, center metal circular pasting piece, outside earth-plate and micro-wave medium floor. The coplanar wave-guide feeding line, circular radiation gap, micro-disturbing short circuit modulation spur track, center metal circular pasting piece and outside earth-plate are on one plane and prepared on the micro-wave medium floor. The coplanar wave-guide feeding line is under the circular radiation gap and connects with the center metal circular pasting piece on portrait directly. The micro-disturbing short circuit modulation spur track is to the right of level direction of circular radiation gap and connects with outside earth-plate. This invention has easy adjustment size and matches with impedance, the feeding line is on one plane with radiation unit for the demand of entelechy and broad band.

The invention relates to an interbody fusion cage, and belongs to the technical field of orthopedic internal fixation. The interbody fusion cage comprises an upper surface, a lower surface and side walls. The interbody fusion cage has the advantages that the post-implantation stability can be improved by the interbody fusion cage, interbody withdrawing or shifting of the interbody fusion cage can be prevented, and transplanted bones in the fusion cage can be advantageously fused with the vertebral bodies of patients.

The invention discloses a mass preparation method of a high-performance graphene film. The method comprises the following steps: dispersing a graphite oxide filter cake in deionized water, adding an alkaline solution to adjust the pH value; sequentially carrying out stirring, high-pressure physical dissociation crushing, defoaming and high-temperature reduction on the mixed solution; coating the defoamed solution on a substrate to form a graphene oxide film, baking the graphene oxide film to obtain a graphene oxide membrane; stripping and rolling the graphene oxide membrane, cutting the graphene oxide membrane in sections; carrying out interval lamination to form a graphene oxide membrane stacked layer, carrying out vacuum baking to primarily reduce the graphene oxide membrane stacked layer; carbonizing and graphitizing the primarily reduced graphene oxide membranes to obtain graphene membranes; laminating the graphitized graphene membranes, and transferring the laminated graphitized graphene membranes to a polymer substrate to form a coiled graphene film. According to the method, the coating efficiency can be improved, the continuous degree is high, and mass preparation of the graphene film can be realized. In addition, the invention also provides a graphene film and an antenna.

The invention relates to a three-dimensional multilayer waveguide mode multiplexing and de-multiplexing device and a preparation method thereof and belongs to the optical communication device technical field, in particular, a mode division multiplexing system. According to the three-dimensional multilayer waveguide mode multiplexing and de-multiplexing device and the preparation method thereof ofthe invention, a three-dimensional multilayer waveguide integrated structure is adopted, and therefore, the limitations of a traditional two-dimensional planar waveguide structure can be eliminated, the integration dimensions of the device can be increased, the integration and flexibility of the device can be enhanced, and the communication capacity of a system can be improved. The boundary of anyone side of the upper-layer waveguide of the three-dimensional waveguide is aligned with the boundary of any one side of the lower-layer waveguide of the three-dimensional waveguide, so that the direct three-dimensional coupling of a fundamental mode and a high-order mode is realized, and therefore, a defect that a traditional three-dimensional mode multiplexer fails to realize direct coupling ofmodes can be eliminated, and the structure and complexity of the device can be simplified. The device of the invention is prepared based on a mature CMOS process, so that high efficiency, low cost and mass production of the device can be realized. With the three-dimensional multilayer waveguide mode multiplexing and de-multiplexing device and the preparation method thereof of the invention adopted, the flexible three-dimensional coupling of the modes can be realized, a solid foundation is laid for on-chip mode multiplexing technology. The three-dimensional multilayer waveguide mode multiplexing and de-multiplexing device and the preparation method thereof can be further applied to the flexible mode routing of a mode division multiplexing network.

The invention relates to a method aiming to improve the efficiency for screening hybridoma cells which secrete antigenic specific antibodies after cell fusion. In the method, the hybridoma cells after cell fusion are screened by using the antigen coupled solid-phase material, and the screened positive cells secreting anti-target antigen is subjected to cloning culture, so that the hybridoma cell strains of monoclonal antibody secreting the anti-target antigen can be established quickly and conveniently.

The invention provides a preparation method of silicon dioxide inverse opal hydrogel photonic crystal beads, which involves two parts of content: (1) preparation of uniformly-sized silicon dioxide nanoparticles; and (2) preparation of a solution of certain concentration as an internal solution from the uniformly-sized silicon dioxide nanoparticles, and use of dimethyl silicone oil as an external solution. By adjusting the flow rate of an injection pump, the amount of liquid transported through an opposite-flushing capillary micro droplet device can be controlled, and then, the size of the generated silicon dioxide photonic crystal beads can be controlled. The silicon dioxide inverse opal hydrogel photonic crystal beads prepared by the method have many advantages over the traditional inverse opal photonic crystal films. The preparation process is simplified by means of the opposite-flushing capillary micro droplet device. Moreover, the inverse opal photonic crystal beads have a perfectsymmetry structure and angle-independent reflection peaks, and can realize naked-eye detection of an object to be detected.

The invention discloses an epidermis attaching type health detection system and a preparation method thereof, and belongs to the technical field of medical health detection instruments. The system comprises a front-end flexible physiological signal detection module and a rear-end signal processing output module which are connected with each other, wherein the front-end flexible physiological signal detection module takes a flexible packaging material as a packaging layer; the surface is provided with an adhesive functional layer which is directly adhered to the human skin of a user; the front-end flexible physiological signal detection module comprises a blood oxygen detection circuit, a body temperature detection circuit and an epidermal electrode which are respectively used for collecting pulse, body temperature signals and electromyographic signals; and the rear-end signal processing output module sends the processed health information to the mobile terminal. The detection system can be tightly attached to the skin of the human body and has the conformal capacity, a rear-end signal processing output module receives, processes and sends front-end sensing data through a designed circuit, and real-time transmission and display of oxyhemoglobin saturation, body temperature, pulse and muscle fatigue degree information can be achieved.

The invention discloses a pulsed laser deposition device. The pulsed laser deposition device comprises a reaction cavity, a plurality of target machines, and a plurality of laser devices, wherein the reaction cavity is internally provided with a supporting column used for fixing a substrate table, a first heating element located above the substrate table and a second heating element located below the substrate table, target materials are fixed at the second ends of the target machines, the target materials are located above and / or below the substrate table in the reaction cavity, included angles are formed between the surfaces of the target materials and the surface of the substrate table, the plurality of laser devices respectively generate laser beams, the first heating element and the second heating element are both provided with notches, and the laser beams linearly reach the surfaces of the target materials in the direction parallel to the surface of the substrate table, and plasma formed by irradiating the surfaces of the target materials through the laser beams reaches the surface of the substrate table through the notches in the first heating element and the second heating element. According to the pulsed laser deposition device, a double-sided skew symmetry deposition process is adopted, so that film deposition can be carried out on both sides of the substrate table, and large-area, large-batch and high-quality film preparation is realized.

The invention belongs to a composite material high performance technology, relates to toughening material of composite material and a preparation method of the toughening material. The toughening material is made of non-woven cloth comprising thermoplastic polymer fiber, the thickness of the non-woven cloth is 5 to 50 micrometers, and the fiber diameter of the non-woven cloth is about 0.2 to 5 micrometers. The preparation method comprises the steps as follows: yarns are sprayed out through solution; the yarns are deposited to become the non-woven cloth; and then the fiber non-woven cloth toughening material is formed through drying and collection. The method adopting a solution spray process to prepare the non-woven cloth toughening material can effectively improve the preparation efficiency, and realize the mass manufacture of the toughening material. The toughening material prepared by the method can obviously improve the compression performance of impacted resin matrix composites, and compared with the prior art, the method has the advantages that the compression strength of the impacted resin matrix composites is improved by 50 to 150 percent, the heat resisting property and the mechanical property of composite material, as well as the flowing of resin during the forming of the composite material, are not affected, and the yield and the quality stability of the composite material are improved.

The invention provides a method for manufacturing inorganic micro-optical elements in batches. The method comprises the following steps: manufacturing micro-optical element molds of any structures by using methods such as ultra-precision turning, laser direct writing, photoetching and high-energy-beam writing; replicating the micro-optical element molds into more high-molecular or crystal molds by using replicating processes such as thermal curing, ultraviolet curing and etching transmission; converting the replicated molds into nickel micro-optical element molds with relatively high thermodynamic properties through an electroforming process, and modifying the nickel micro-optical element molds by coating in order to improve the wear resistance and thermal stability; manufacturing inorganic glass micro-optical elements with the modified nickel molds by mold pressing; and lastly, adjusting overall dimensions of the mold-pressed micro-optical elements to design values in order that the micro-optical elements can be mounted and adjusted conveniently. According to the method, thousands of inorganic optical elements can be machined by mold pressing replication of one template. The method for manufacturing the inorganic micro-optical elements in batches has the advantages of the extremely high efficiency and very low cost. The application range of the micro-optical elements is enlarged hopefully, and the industrialization of the micro-optical elements is realized.

The invention discloses a piezoresistive miniature electric field sensor, a preparation method thereof and an electric field sensor. The piezoresistive miniature electric field sensor comprises a substrate; an anchor region disposed at the top of the substrate; a piezoresistive vibration pick-up element connected with the anchor area and used for converting the electric field intensity into resistance value change; a vibration film which is suspended above the substrate, is connected with the piezoresistive vibration pick-up element through a supporting beam and is used for sensing the change of an electric field. The vibration film generates displacement under the action of electric field force, so that the resistance value of the piezoresistive vibration pickup structure is changed. The piezoresistive miniature electric field sensor disclosed by the invention does not need to additionally introduce a driving voltage, has the characteristics of low power consumption and capability of realizing alternating-current and direct-current broadband electric field measurement, signals obtained by piezoresistive detection are stronger, the signal-to-noise ratio is high, meanwhile, the size is small, the structure is simple, and batch manufacturing and system integration are facilitated.

The invention discloses a method for preparing carbon nanotubes from coal. The method comprises the steps that pulverized coal is mixed with water, melamine and a soluble cobalt salt or a nickel salt,then a high-energy ball mill is utilized for wet milling to obtain a slurry-like mixture, and after the mixture is subjected to freeze drying, a porous blocky material is obtained; the blocky material is placed in a high-temperature atmosphere furnace to be sintered in a hydrogen / argon mixed atmosphere, and thus the clustered carbon nanotubes can be prepared; and finally, the pure carbon nanotubes are obtained through pickling and washing with water. The natural coal is utilized as the raw material, the coal does not need to be pre-treated, selectivity to the coal type is low, the yield is high, the diameters of the prepared carbon nanotubes are 40 nm to 100 nm, and the diameters of the carbon tubes are evenly distributed; and the preparation process is simple, a technology is simplified,the equipment requirements are low, the cost is low, and industrial production is easy to realize. The carbon nanotubes have great market demands and broad application prospects in the fields of lithium-ion batteries, super capacitors, nano catalysis, biomedicine, environmental protection and the like.

The invention discloses a batch welding method for steel structure TKY joints. The batch welding method is used for welding a main pipe and short joint branch pipes at the TKY joints of the main pipe. The batch welding method comprises the following steps of S100, calculating and simulating branch pipe space angles for the different TKY joints of the main pipe; S200, designing and manufacturing a TKY joint assembly tool according to the space angle of the branch pipes at the TKY joints; S300, carrying out precision measurement and control on the TKY joint assembly tool; S400, positioning and scribing of the TKY joint assembly tool; S500, in-place and pairing of TKY joint pipes; and S600, TKY joint welding. Batch manufacturing of the TKY joints is achieved, one-time assembly forming is guaranteed, the number of times of measurement and the size control difficulty are reduced, the requirement for assembly welding work of the TKY joints of the same specification on a large scale is met, batch and high-speed production is achieved, and production efficiency is improved.

The invention discloses a high-strength and high-efficiency bismuth telluride block. The bismuth telluride block is in a lamellar shape; the bismuth telluride block is a P-type lamellar bismuth telluride block of Bi0.5Sb1.5Te3+x, and the value range of x is 0-0.05, or, the bismuth telluride block is an N-type lamellar bismuth telluride block of Bi2Te3-ySey, and y ranges from 0 to 0.3. The bismuth telluride block is of a special lamellar structure and has the double characteristics of high orientation degree and grain refinement, and the bismuth telluride block can be directly used for vacuum hot pressing sintering or vacuum thermal deformation sintering without being cut and / or ground into powder. And the bismuth telluride-based thermoelectric material with high thermoelectric figure of merit and high strength can be rapidly prepared.

The invention discloses a method for preparing a micro-pit structure and a super-hydrophobic metal surface in a large area on a net mask. The method includes the steps that (1), an organic material net with a first preset hole diameter is applied to the metal surface; (2) a sample obtained in step (1) is subjected to heating treatment so that the organic material net can be molten, and therefore an organic mask with a second preset hole diameter is formed on the metal surface; (3) the metal surface not covered by the organic mask is etched so as to obtain the micro-pit structure on the metal surface; and (4) the sample obtained in step (3) is cleaned with a cleaning agent so as to remove the organic mask and obtain the metal surface with the micro-pit structure. Due to the method, the metal surface with the micro-pit structure in the large area can be prepared and obtained efficiently, by etching the micro-pit structure in a specific structure, and the large-area super-hydrophobic metal surface can be obtained.

The invention relates to a wearable glucose sensor chip based on working electrodes of gold aerogel and a preparation method of the wearable glucose sensor chip. The gold aerogel is directly used as the working electrodes of wearable glucose sensors, no additional conductive substrate is required, the accuracy of detecting the glucose concentration is improved, the cost of making the conductive substrate is also saved, and the cost performance of a sensor is improved; and in addition, by adjusting parameters of the synthetic gold aerogel, the gold aerogel with different sizes is prepared to prepare the working electrodes of the glucose sensors with different sensitivities, and the signal-to-noise ratio of the sensor is greatly increased.

The invention relates to a method for preparing a high-orientation carbon nanotube film cooling fin, and belongs to the technical field of thermal dissipation. The method for preparing the high-orientation carbon nanotube film cooling fin comprises the following steps: preparing a spinning carbon nanotube array, preparing a super-aligned carbon nanotube film by dry spinning, and preparing the high-orientation carbon nanotube film cooling fin by stacking on the surface of a chip. According to the method, a super-aligned spinning carbon nanotube array material is prepared by a CVD (Chemical Vapor Deposition) method, and a thickness-controllable high-orientation carbon nanotube film cooling fin is obtained by applying dry direct spinning on the surface of the chip. The film cooling fin has a quite high heat conductivity, so that a larger effective surface area is created on the surface of the chip to transmit heat to the outside environment through a radiator, accordingly, the running temperature of the chip is decreased.

The invention discloses a preparation method of nitrogen-doped graphene quantum dots. According to the method, TATB serves as a precursor of a carbon source and a nitrogen source, TATB is dissolved in a concentrated sulfuric acid solvent, heating is carried out for 0.5-7 hours at certain temperature, TATB is subjected to a condensation reaction to generate nitrogen-doped graphene, water is added after the reaction is completed and cooling is completed, the material is transferred into a dialysis bag for dialysis for 2-3 days, concentrated sulfuric acid is removed, the PH value of the solution is equal to 6 to 7, water-soluble nitrogen-doped graphene is obtained, and nitrogen-doped graphene solid powder is obtained after the water-soluble nitrogen-doped graphene continues to be subjected to freeze drying. TATB serves as the raw material, the nitrogen-doped graphene or quantum dots are prepared through the one-step method, the preparation process is simple and efficient, and batched preparation can be achieved. The prepared nitrogen-doped graphene has good water solubility, and the nitrogen-doped graphene or the nitrogen-doped graphene quantum dots with the adjustable morphology and molecular weight can be obtained by controlling the preparation process.

The invention discloses a micro-nano structure Al-FeF3 compound fuel and a preparation method thereof. The method includes the steps: adding aluminum powder, additives FeF3 and stearic acid into a planetary ball mill, and performing high-energy ball milling according to the ratio of grinding media to materials and process parameters; taking out materials, adding organic solvents, and naturally drying the materials to achieve passivation of the materials; cleaning the materials by the organic solvents, drying the cleaned materials, and packaging the dried materials. In the aspects of a structure and a form, the prepared micro-nano structure Al-FeF3 compound fuel has the advantages that the aluminum powder has a micron-sized form and accounts for 95% or more of the weight of the compound fuel, the additives FeF3 have a nano-sized form and are uniformly embedded into surface layers and the inside of the aluminum powder, the additives FeF3 can serve as metal fuels for solid rocket propellants to replace the aluminum powder, so that an ignition point of the aluminum powder can be reduced, low-temperature oxidation performance of the aluminum powder is improved, and two-phase loss of a rocket nozzle is reduced. A preparation process of the compound fuel is simple, preparation devices are mature, and industrial amplification can be achieved under a certain scale.

The invention discloses an IrRu-based multi-component alloy oxygen evolution catalyst and a preparation method thereof. The preparation method comprises the steps of dissolving an iridium-containing compound, a ruthenium-containing compound and an X-containing metal compound in deionized water to form a precursor mixed solution; preparing an alkaline sacrificial carrier solution containing a strong alkali reagent; adding the precursor mixed solution into the alkaline sacrificial carrier solution, reacting to form IrRuX hydroxide, and loading the IrRuX hydroxide on the sacrificial carrier; and carrying out heat treatment on the IrRuX hydroxide in a reducing atmosphere to form the IrRuX alloy catalyst supported on a sacrificial carrier. The IrRuX alloy catalyst has high stability and high catalytic activity.

The invention discloses a preparation method for extrusion M<g>B<2> single core composite bars. The method comprises the steps of 1, carrying out straightening, cutting, acid cleaning, cleaning and drying processing in sequence, thereby obtaining oxygen free copper short rods; 2, carrying out annealing heat treatment on the oxygen free copper short rods; 3, sealing a port A of a metal pipe throughthe oxygen free copper short rod, filling the metal pipe with superconductive powder, sealing the port B of the metal pipe through the oxygen free copper short rod, and in a process of filling the superconductive powder, the oxygen free copper short rod is placed in the metal pipe every other certain distance, wherein the oxygen free copper short rods are used for isolating precursor powder; and4, assembling the metal pipe filled with the precursor powder into an oxygen free copper clad bushing, carrying out drawing to obtain a composite long rod, carrying out cut-off along the middle positions of the oxygen free copper short rods in the composite long rod, and carrying out the acid cleaning to obtain the extrusion M<g>B<2> single core composite bars. According to the extrusion M<g>B<2>single core composite bars prepared by the invention, the two ends are sealed by the oxygen free copper short rods, so the superconductive powder is prevented from being corroded by acid liquor when the acid cleaning is carried out, and mass production can be realized.

The invention discloses a quantum dot-coupled microstructure with prognosis preparation of a quantum dot and a preparation method thereof. The longitudinal dimension of the quantum dot is controlled based on the thickness of a quantum well; components of the quantum dot are controlled by components of the quantum well and the uniformity is higher than that of the quantum dot structure in self-assembled growth. The lateral dimension of the quantum dot is selected by the selective thermal evaporation, so that the limit of epitaxial growth is broken; and the lateral dimension is far lower than that of the quantum dot structure in self-assembled growth. The position of the quantum dot in the microstructure is controlled by the micro-nano processing technology, so that the position and height of the quantum dot in the microstructure are controllable. According to the invention, the prognosis-reparation of the quantum dot is processed by the selective thermal evaporation; the process is simple, the cost is low, and the extensibility and repeatability are high; batched preparation is realized; and the practical process of the quantum-dot coupling microstructure is promoted.

An electret miniature electric field sensor and method, and an electric field sensor system and method are provided, the electret miniature electric field sensor comprising: a vibration film including a conductive film and an electret film formed on one side surface of the conductive film; a detection electrode forming a capacitor with the conductive film. The vibration film generates electrostatic force under the action of an electric field to generate displacement, capacitance between the conductive film and the detection electrode is caused to change, voltage between the vibration film and the detection electrode is caused to change, and the electric field or the voltage to be measured can be measured by measuring the voltage change or the capacitance change. The electric field sensor does not need to additionally introduce driving voltage, has the advantages of being low in power consumption, capable of achieving alternating-current and direct-current broadband electric field measurement, small in size, simple in structure and beneficial to achieving batch manufacturing and system integration.