137results about How to "Solve associativity" patented technology

The invention provides a novel preparation method of a high-performance continuous ZIF-8 (zero insert force-8) film for the high-performance separation and purification of gas, and mainly aims at solving the combination problem among a continuous even growth film, a film and a carrier of the ZIF-8 film. The preparation method is mainly characterized by comprising the following steps of: previously introducing growth point and a combination point on the surface of a porous carrier to form a thin layer of zinc oxide coating layer taken as a finished film, and growing in an inducing way to form the continuous even ZIF-8 film. An active point of the film homogeneous nucleation is introduced, the combination force problem between the film and the surface of the carrier is solved, and the surface of the carrier is modified by the coating layer, so that the high-quality film can be preferably formed. Compared with the conventional preparation method of the ZIF-8 film, the novel method adopted by the invention not only is high in film-forming effective mass, simple in process, and convenient for large-scale preparation and amplification, so that the method has a potential application prospect and a wide application value.

The invention relates to a fiber mesh tape-wound and reinforced composite pipe, a preparation process and a device, belonging to the technical field of forming processes of composite pipes. The composite pipe comprises an inner-layer core pipe and a post-coated layer, as well as a fiber mesh tape arranged between two layers, wherein the inner-layer core pipe is extruded by a core pipe extruding machine, the adhesive resin fiber mesh tape is heated through a post-heating box, and the composite pipe is finally obtained by traction through a post-traction machine, sizing through a vacuum spraying and sizing box and the like. According to the composite pipe disclosed by the invention, the technology is adopted, the preparation process is simple, the existing tape plastic covering treatment process and the composite pipe forming process are combined into a whole, the number of workers for production is reduced, and the degree of automation is improved; furthermore, the used device is a conventional device, and the cost is reduced; and in addition, adhesive resin is firstly coated on the outer surface of the core pipe, and the plain woven fiber mesh tape is further wounded, so that the interface problem in the pipe is effectively solved, the mechanical properties of the pipe are upgraded and the stability of the pipe during long-term use is also improved.

The invention provides a light-storage type EV (electric vehicle) charging and converting station, belonging to the field of power supply systems. The station is used for solving the problems caused by taking an alternating current power grid as a power supply source in the existing EV charging and converting station. The light-storage type EV charging and converting station comprises a photovoltaic generating system, a storage battery energy accumulation system, an EV charging station and a station-used load, wherein the photovoltaic generating system comprises a solar battery assembly, a grid connected inverter and a photovoltaic power supply management system, and is suspended on a power supply bus of the photovoltaic system; the storage battery energy accumulation system comprises a storage battery pack, a battery management system and a dual-direction inverter, and is suspended on a power supply bus of the load; the EV charging and converting station and the station-used load are suspended on the power supply load of the load; and the power supply bus of the photovoltaic system and the power supply bus of the load are respectively connected with a 380V bus in the alternating current power grid, and are connected by a photovoltaic access breaker.

The invention relates to a green body of red soil ceramic. The green body of the red soil ceramic is prepared from the following raw materials: red soil, quartz, talc, limestone and dolomite; the transmutation glaze of the red soil ceramic is prepared from the following raw materials: potassium feldspar, albite, calcium oxide, barium oxide, kaolin, quartz powder, sodium tripolyphosphate, titaniumoxide, rutile, zinc oxide and a coloring agent. By addition of other mineral raw materials, chemical raw materials and the like, the physical performance and the chemical performance of the green body are changed and the technical problems that the green body glaze of the red soil product is difficult to combine and the product is loose and fragile are solved; the firing temperature of the glaze is reduced from 1,310 DEG C to 1,230 DEG C, so thatthe firing temperature is reduced by 80 DEG C, the using amount of the fuel and the discharge quantity of harmful gas are reduced, environmental protection is contributed and production cost is greatly saved; and by development of the lead-free transmutation glaze, the lead-free transmutation glaze is suitable for being combined with the green body of the red soil ceramic, so that the problem of pollution to the ceramic decorative environment is solved fundamentally.

The invention discloses a nanometer covering craft of metal surface, which comprises the following steps: (1) cleaning metal surface; (2) covering nanometer powdered material on the surface; (3) selecting laser beam of flare according to covering surface to proceed smelting-covering treatment; carrying on keeping inactive gas simultaneously in the area of laser smelting-covering treatment; (4) cooling metal by radiation. The invention improves the property of key components and parts of mechanical equipment, which restores and re-uses perishable faulty element

The invention provides a cavitation erosion-resistant laser high-entropy alloying powder on a stainless steel surface and a preparation process thereof and belongs to the technical field of surface engineering. The component of the high-entropy alloying powder comprises four metal elements, namely Co, Cr, Al and Ni and a non-metal element B; the additive amounts of the metal elements in the powder are equal in molar ratio and the molar number of the non-metal element B is x times that of other component powder, wherein x is greater than or equal to 0 but less than or equal to 1. By adopting a proper laser radiation process parameter, a high-entropy alloy coating which is combined with a stainless steel base material and is uniform and fine in tissue, free of cracks and excellent in cavitation erosion resistance can be prepared by virtue of a surface alloying technology of laser reaction synthesis.

The invention relates to a preparation method for forming a metal organic framework ZIF-67 film. Through hydrothermal synthesis, first a cobalt nano array layer firmly combined with a carrier is introduced to the carrier, and the carrier with the cobalt nano array layer is obtained; in the aftertreatment process, the cobalt nano array layer provides a metal source for growth of the ZIF-67 film and serves as a growing point and bonding point for forming the film, the continuous and uniform ZIF-67 film is formed by growth. According to the method, the problems that the metal organic framework film has difficulty in heterogeneous nucleation, is weak in binding force with the carrier and is easily subjected to embrittlement are solved. In the cobalt nano array growth process or in the ligand growth process, only water is used as a solvent, and no other organic solvent participates. The environmental pollution is small, and the preparation method conforms to the green chemical development requirements. In the film forming process, the cobalt nano array layer has dual functions of providing a metal cobalt source and enhancing binding force between the carrier and the ZIF-67 film.

The invention discloses an impregnation preparation method of nanometer titanium oxide which takes shell powder as a carrier, and in particular relates to a reproducible porous nanometer titanium oxide powder which takes the shell powder as the carrier and the preparation method thereof. In the method, titanium oxide is loaded on a shell powder carrier by impregnation; firstly, alkoxide solution of titanium ester or titanium with appropriate concentration is prepared, then an activated shell powder carrier with certain proportion is impregnated in the alkoxide solution, then the obtained solution is stirred and stayed for a certain time, and treated by low temperature and abstersion pretreatment and finally roasted at high temperature, so the nanometer TiO2 forms high-strength bond with the shell powder and promotes the catalytic activity of the nanometer TiO2 at the same time. Impregnation can be conducted for a plurality of times to increase load. The nanometer TiO2 is characterized by small particle size, good compatibility with materials, high catalytic efficiency, good stability, good regenerability, and the like, and can be applied to the fields of plastics, rubbers, fibers, coatings, home electronic appliances, paints, ceramics, water and environmental manipulation, pharmaceutical and hygienic articles, etc. In terms of sources of raw materials and production technology, the preparation method not only reduces the production cost of the nanometer TiO2 catalyst but also is helpful for disposal of the increasingly serious environmental problems, thus bearing great environmental protection significance.

The invention relates to a polyamide composite material comprising raw materials of the following constituents (by weight proportion): nylon 66 sections 50-75%, carbon fiber 15-40%, compatibilzer 4-10%, anti-oxidant 0.1-1% and lubricating agent 0.1-0.5%. The invention also discloses the preparing process.

The invention discloses a brake pad material for a high-speed railway passenger train and a preparing method thereof and belongs to the technical field of powder metallurgy friction materials. The brake pad material is prepared by the following steps: after drying and sieving powdery raw materials, feeding the raw materials into a mixer, and spraying an adhesive; after mixing the materials, placing the materials in a steel mould, and carrying out pressing; and then, carrying out sintering at a reduction atmosphere, and then, carrying out heat treatment in a reduction atmosphere, wherein the powdery raw materials comprise copper powder, iron powder, Ti2AlC powder, chromium powder, nickel powder, manganese powder, silicon dioxide, graphite, boron nitride and molybdenum disulfate. The invention further provides the preparing method of the brake pad material. In the invention, in-situ TiC obtained through the Ti2AlC is used as a main friction component, the material of an in-situ nanometer TiC layered framework is prepared, the copper is accordingly used as a matrix, a small quantity of other metals is added, the content of lubricating components, such as the graphite, is regulated, and a novel material with a great brake effect and a low wear rate is finally obtained. The material is suitable for being used as the brake pad material for the high-speed railway passenger train.

The invention relates to a preparation method of a polymethyl methacrylate (PMMA) cellular gradient material. The method specifically comprises: placing a unidirectionally opened die loaded with PMMA into an autoclave, controlling the oriented adsorption of highpressure carbon dioxide in PMMA to form a concentration gradient, with the pressure of the carbon dioxide controlled at 10-30MPa and the temperature maintained at 50-150DEG C, preserving the heat and pressure for 1-60min, then conducting pressure releasing, and finally cooling a sample to room temperature with an ice-water mixture, thus obtaining the cellular gradient material. A cellular structure with a small cell diameter and a thin cell wall forms in a high concentration carbon dioxide diffusion area on the surface layer, a cellular structure with a large cell diameter and a thick cell wall forms in a low concentration area of the central section, and the innermost layer is compact PMMA matrixes. The porosity of the sample changes from high to low continuously from the surface layer to the inner layer. With a cell diameter controlled at micron magnitude, the gradient material provided in the invention has good dimensional stability, wide porosity variation range and high mechanical strength.

The invention discloses a powder material for laser high entropy alloying of an iron single element base alloy surface, belongs to the surface engineering technology field, and provides a new power material for preparation of a high entropy alloy coating. The powder material for the laser high entropy alloying of the iron single element base alloy surface consists of five types or more than five types of metallic elements. Constituent elements of the powder material for the laser high entropy alloying of the iron single element base alloy surface contain single element base alloy base material principal element iron, wherein content of the confirmed single element base alloy base material principal element iron is 0-30% of the total molar fraction of the coating alloy power material, and adding content of other types of the constituent elements in the coating alloy power material is 5-35% 0f the total molar fraction of the coating alloy power material. The powder material for the laser high entropy alloying of the iron single element base alloy surface is prepared by using appropriate laser irradiation technological parameters, and can prepare the high entropy alloy coating in metallurgical bonding with an iron base alloy base material, uniform and fine in texture, flawless and excellent in performance.

The invention relates to a large equal channel angular large-strain extrusion die comprising an upper die holder (7), a die case (2), a punch (10) and a lower die holder (4). The large equal channel angular large-strain extrusion die is characterized in that the upper end of the punch (10) is fixedly mounted in a punch fixing board (12); the upper die holder (7), a punch backing plate (6) and the punch fixing board (12) are tightly connected to form a whole body; a front die core (15) and a rear die core (18) are embedded in the die case (2); the lower end of the punch (10) is inserted in an extrusion cavity (19) formed between the front die core (15) and the rear die core (18); the die case (2) is provided with a slantwise arranged extrusion channel (20) which is communicated with the extrusion cavity (19) and embedded in the lower die holder (4); the front die core (15), the rear die core (18) and the die case (2) are in taper fit; the lower die holder (4) is connected with the die case (2); and a discharge cavity (21) which is communicated with the extrusion channel (20) on the die case (2) is arranged on the lower die holder (4). The invention has the advantages of high strength, smooth extrusion and simple structure.

The invention relates to a surface modification method for carbon fiber powder. The method comprises the following steps of performing air firing pretreatment on carbon fiber powder, immersing the pretreated carbon fiber powder in oxidized liquid for surface modification, and then cleaning the modified carbon fiber powder to obtain the surface modified carbon fiber powder. The modified carbon fiber powder has good solvent wettability and dispersion stability, and has good interface bonding capability when being combined with a base body.

The invention discloses a composite nanometer filter material with a catalytic function. The composite nanometer filter material comprises a dust facing layer, a buffer layer, a catalytic filter layer and a supporting layer which are sequentially coincided, wherein each layer contains fibers crosslinked into a mesh; the fiber diameters of the dust facing layer and the supporting layer are larger than 3mu m; the fiber diameter of the buffer layer is 1-3mu m; the fiber diameter of the catalytic filter layer is small than 1mu m; the total gram weight of the dust facing layer, the buffer layer and the supporting layer is respectively 25-500grams per square meter; the total gram weight of the catalytic filter layer is 10-250grams per square meter; and the catalytic filter layer comprises a nanometer fiber carrier and active ingredients loaded on the nanometer fiber carrier. The nanometer filter material disclosed by the invention is high in removal efficiency and long in service life. The invention also discloses a method for preparing the composite nanometer filter material with the catalytic function. The catalytic active ingredients are introduced in situ, so that the problems that the bonding property of the catalyst and the fiber filter material in the catalytic filter material is low, the catalyst particles are easy to drop and the like are solved.

The invention relates to an activation method for electromagnetic shielding fabrics before chemical plating based on PAMAM (polyamidoamine)/palladium ligand. The activation method includes four steps of preparing PAMAM dendrimer solution; preparing dendrimer PAMAM-palladium activating finishing liquor; performing fabric activation; and performing chemical plating. Compared with the prior art, theinvention provides a simple, convenient and stable preparation method for an activating agent with a high-efficient catalysis effect and the activation processing method before chemical plating. Accordingly, the activation method has excellent advantages that metal chemical initial plating of the electromagnetic shielding fabrics is easy, a plating layer is uniform and firm, and the like.

The invention discloses an electroplating manufacturing process, comprising the following steps of: A, utilizing a plasma degumming machine to carry out degumming treatment on residual resin in a back-drilled blind hole of a circuit board; B, carrying out primary copper deposition treatment on the back-drilled blind hole of the circuit board and then carrying out secondary copper deposition treatment to form a copper layer with the thickness of 0.3-0.5 microns in the back-drilled blind hole; and C, carrying out hole-filling electroplating on the circuit board to lead the thickness of the copper layer in the back-drilled blind hole to be more than 18 microns. According to the invention, by utilizing a plasma degumming way to treat the residual resin in the back-drilled blind hole of the circuit board, the problem that a chemical degumming speed is lower is solved, and the plasma degumming way has a good degumming effect and no residues; two times of copper deposition solve the problems that the thickness of deposited copper generated by the primary copper deposition is thin, and hollow copper depositing layers, broken copper or an open circuit is easy to generate in a process of storing or electrically pre-treating a board; and the thickness of the copper layer in the blind hole can reach to be more than 18 microns through the hole-filling electroplating, so that the thickness requirement of the back-drilled blind hole is met. Compared with the prior art, the electroplating manufacturing process provided by the invention effectively overcomes the quality defects that: the back-drilled blind hole cannot be completely degummed, the binding force is poor, and the copper in the hole is thinner and the like.

The invention relates to a preparation method of an antibacterial metal-organic framework membrane. The technical scheme of the method is that an organic molecule modification layer is pre-grown on the surface of a carrier, such that the carrier with an organic molecule coating is obtained; the organic molecules have coordination active groups, and can induce metal ions to coordinate with them; the metal ions are further assembled with the organic ligand, such that a continuous and dense metal-organic framework membrane is formed through growth. According to the invention, the metal-organic framework membrane is grown on the organic-molecule-modified carrier, such that the problems of insufficient binding force between the membrane and the carrier, poor weather resistance and poor heat resistance can be solved. Also, with the coordination effect of the organic ligand and the metal ions, metal ion release concentration and speed can be effectively controlled, such that a long-lasting antibacterial effect can be achieved. With the method provided by the invention, the quality of the metal-organic framework membrane is improved; the preparation process is simple; and the prepared antibacterial membrane can be widely applied in the aspects of aerospace equipment, medical equipment, product packaging, anti-bacterial coating, water treatment membrane, and the like. The membrane and the preparation method have a good application prospect.

The invention discloses a test device for determining the life of a steel wire under the coupling effect of corrosion and fatigue, and a method thereof. The device comprises reaction frames, a corrosive circulating container and a fatigue test machine, the reaction frames are respectively connected with the fatigue test machine through oil ways, every reaction frame comprises stand columns, inclined struts and a bearer, the stand columns are respectively connected and fixed to the bearer through the inclined struts, one side of every stand column is connected with a plurality of hydraulic jacks, and the hydraulic jacks are connected with the oil ways; and the corrosive circulating container is arranged between the stand columns of the reaction frame, the corrosive circulating container comprises a corrosive container, a circulating container and a pipeline for connecting the corrosive container with the circulating container, and the corrosive container is provided with a circular hole for a steel wire to be tested to traverse through. The device and the method are developed on the basis of traditional fatigue test and corrosion test, are used for exploring the damage mechanism of the steel wire under the coupling of the corrosion and the fatigue, and lay a foundation for the assessment of the life of practical bridge engineering.

The invention relates to a superfine glass fiber cotton felt for photocatalytic air purification and a preparation method thereof, and belongs to the technical field of functional composite materials.The superfine glass fiber cotton felt consists of the following components in percentage by mass: 83 to 92 weight percent of superfine glass fiber, 6 to 8 weight percent of photocatalytic nanoscale particles and 1 to 3 weight percent of bonding system. The invention also relates to a preparation method of the superfine glass fiber cotton felt for photocatalytic air purification. The preparation method comprises the following steps: uniformly atomizing and spraying turbid liquid containing photocatalytic nanoparticles and a bonding system on the surface of the superfine glass fiber prepared bya flame blowing method, and drying to obtain the superfine glass fiber cotton felt for photocatalytic air purification. Compared with a traditional glass fiber filter cotton felt, the superfine glassfiber cotton felt for photocatalytic air purification has the advantages that the function of eliminating bacteria and volatile organic compounds (TVOC) in air is added, the superfine glass fiber cotton felt is rapidly decomposed under visible light, the filtering efficiency is higher, the filtering resistance is lower, and the machining strength is better.

The invention relates to a plating process which comprises the following steps: (1) removing oil by using an organic solvent; (2) removing the oil by using ultrasonic waves; (3) washing by using water; (4) corrosively washing; (5) washing by using the water; (6) pickling; (7) washing by using the water; (8) activating; (9) washing by using the water; (10) immersing zinc; (11) washing by using the water; (12) chemically plating nickel; (13) washing by using the water; (14) pre-plating silver; (15) plating the silver, namely placing a metal part with the silver pre-plated into a plating solution at the temperature of 10-35 DEG C, and controlling the current density between 0.3 A/dm<2> and 0.4 A/dm<2>, wherein a silver plating solution comprises the following components by weight: 30-45 g/L of silver chloride AgCl, 70-120 g/L of potassium cyanide KCN and 0.5-2 g/L of sodium thiosulfate Na2S2O3.5H2O; (16) recovering; (17) washing by using the water; (18) immersing an anti-blushing agent; (19) drying. The plating process disclosed by the invention can be used for overcoming the defects of poor clad layer binding force and no clad layer on a deep recessed part of the traditional silver plating technology.

The invention provides a self-lubricating coated cutting tool prepared on the basis of electric spark deposition and a preparation method thereof and belongs to the technical field of manufacturing of a mechanical cutting tool. A base material of the cutting tool is high-speed steel or hard alloy; a soft metal microcapillary electrode or an electrode of which the end face is provided with a microstructure is adopted; the microcapillary electrode or the microstructure of the electrode is full filled with a solid lubricant and then a self-lubricating coating is prepared on the surface of the cutting tool by adopting electric spark deposition. According to the invention, by utilizing the electric spark deposition technology, the cutting tool not only has a self-lubricating effect, but also has high bonding strength in the dry cutting process; due to the result, on one hand, a friction lubricating state of the cutting tool in the dry cutting process can be greatly improved, friction can be reduced, adhesion is prevented, a cutting force and a cutting temperature are reduced and wear of the cutting tool is reduced, and on the other hand, service life of the cutting tool can be prolonged. The self-lubricating coated cutting tool can be widely applied to dry cutting and cutting machining of materials difficult to machine.

The invention discloses a mortar-coated heat-preserving plate which comprises a base plate. Glass fiber cloth layers are attached to the upper end face and/or the lower end face of the base plate. Mortar layers are arranged on the glass fiber layers on the upper end face and/or the lower end face in a coated mode, mortar comprises 33-37 parts of silicate cement, 6-7 parts of brucite fibers, 23-27 parts of expanded perlite, 0.3 part of hydroxypropyl methylcellulose, 0.1 part of polypropylene fibers, 0.5 part of calcium stearate, 17-26 parts of modified aerogel particles and 0.3-0.6 part of a promoter. The modified aerogel particles are prepared due to the fact that a surface modifier is sprayed on the surfaces of aerogel particles for surface modification. The heat-preserving mortar is made of inorganic materials, is resistant to acid, alkali and corrosion, does not crack or disengage, is high in stability, is identical to a building wall in service life, and has excellent temperature stability and chemical stability. Surface modification is carried out on the aerogel particles, so that the physical property that the aerogel particles are easy to break and can be easily combined with water is overcome, the heat conductivity of the surface-modified aerogel heat-preserving mortar reaches below 0.04W/m.K, and the heat-preserving effect of the heat-preserving mortar is improved.

The present invention relates to the field of electromagnetic shielding technology, and more particularly relates to graphene/carbon nanotube composite electromagnetic shielding paper and a preparation method thereof. Graphene and carbon nanotubes as conductive agents and thermoplastic polyurethane as a matrix are used for preparing a conductive coating, the graphene and the carbon nanotubes overlap each other to form a continuous conductive network, the electrical conductivity of the coating can be significantly improved; the conductive coating is pulled on cotton fiber paper to form a film to obtain the electromagnetic shielding paper, the thermoplastic polyurethane allows the graphene and the carbon nanotubes to be firmly attached to the surface of the cotton fiber paper, and the problems that the bonding force between the conductive agent and the paper fiber is poor and powder is easy to fall off can be solved. The graphene/carbon nanotube composite electromagnetic shielding paperhas high shielding efficiency and wide frequency bandwidth, but also has excellent characteristics such as light weight, ultra-thinness and softness, has simple preparation process, low cost and easyrealization of large-scale production, and provides a solution to solve the electromagnetic compatibility problem of portable electronic products.

The embodiment of the invention discloses a modeling method, system and device based on oblique photography and a storage medium. The modeling method based on oblique photography comprises the steps of: obtaining laser radar point cloud data and oblique image data of a preset flight area, wherein the laser radar point cloud data comprise first ground object data, and the oblique image data comprise second ground object data; constructing a map-free three-dimensional model by using the laser radar point cloud data from which the first surface feature data is removed; extracting second ground object data in the inclined image data, and constructing a live-action three-dimensional model by using the second ground object data; and fusing the map-free three-dimensional model and the live-actionthree-dimensional model to construct a target three-dimensional model. According to the embodiment of the invention, high-precision modeling in combination with laser radar and oblique photography technologies is realized.

A seafood sausage is prepared from the shaped shellfish through taking its edible part, preserving, proportionally mixing it with the meat blocks or minced meat of domestic animals and fowls, and conventional steps. Its advantages are strong fragrance, unique taste, and good enjoyment to eat it.

The invention provides high-adhesion bi-component self-crosslinking digestive tract injury mucosa protection glue and application thereof. The high-adhesion bi-component self-crosslinking digestive tract injury mucosa protection glue comprises an aldehyde group-containing high polymer biological material and an amino group-containing high polymer biological material. The two components are mixed through a double-cavity injector and then injected to the surface of a digestive tract injury mucosa through an endoscope, aldehyde groups and amino groups in the two components are crosslinked to forma colloid membrane, the aldehyde group-containing high polymer biological material is combined with protein amino groups exposed on a wound surface and firmly adheres to the wound surface, the stimulation effect of intestinal digestive juice on the digestive tract injury mucosa is avoided, and healing of the wound surface is promoted. Animal tests show that the high-adhesion bi-component self-crosslinking digestive tract injury mucosa protection glue can obviously promote repair of the injury mucosa, and therefore the high-adhesion bi-component self-crosslinking digestive tract injury mucosaprotection glue has the effects of promoting healing and protecting esophagus, stomach and intestinal tract mucosa injuries and skin wound surfaces.

The invention discloses an intelligent household central-control control system based on a household instrument and an intelligent household central-control control method. The intelligent household central-control control system is provided with a micro-control unit, an external network link module, an external network link control module, an internal network link module, an internal network link control module, a display, an embedded sensor, an external sensor interface, a slave instrument electricity-taking unit and a household instrument measurement unit. The intelligent household central-control control system has richer internal network and external network link modes, the intelligent household central-control control system is available for an intelligent household electrical appliance module and various electrical appliances to compose an internal intelligent household network in multiple kinds of wired and wireless manners and is connected with an external network in multiple kinds of wired and wireless manners, and data and instructions are transmitted up and down. The intelligent household central-control control system is further provided with a plurality of embedded sensors and an external sensor interface, can be connected with intelligent home, technical prevention and security and protection sensors, and is used in remote management and data uploading and downloading.

The invention relates to a fluorescent microsphere combined detection device for a cardiac marker and a preparation method of the fluorescent microsphere combined detection device, and belongs to thefield of medical detection equipment. A sample pad, an immunofluorescent antibody glass fiber membrane, a nitrocellulose membrane and an absorption pad respectively adhere to a plastic plate, the twoends of the nitrocellulose membrane are respectively overlapped with the absorption pad and the immunofluorescent antibody glass fiber membrane, the other end of the immunofluorescent antibody glass fiber membrane is overlapped with the sample pad, the nitrocellulose membrane is provided with a first detection line T1 with a solid-phase high-specificity MPO antibody, a second detection line T2 with a solid-phase high-specificity cTnI antibody, a third detection line T3 with a solid-phase high-specificity NT-proBNP antibody, a fourth detection line T4 with a solid-phase high-specificity D dimerantibody and a quality control line C; and a goat anti-mouse IgG polyclonal antibody is sprayed on the quality control line C. The fluorescent microsphere combined detection device for the cardiac marker has the advantages that the sensitivity and the specificity of reaction are effectively improved, the use amount of immune microspheres can further be reduced under the same threshold value, thecost is saved, and the device is simple and convenient to operate and high in practicability.

The invention discloses a high-strength antifriction lead-free copper-based sliding bearing material. A ball milling process is adopted to enable copper powder, iron powder and copper sulphide powderto be mechanically alloyed, and CuS and Fe mixed powder can generate superfine particle nanocrystalline FeS in a high-energy guide-in manner through a mechanically induced chemical reaction. The reaction in situ composite process is used for solving the problems that enhanced particles are added externally, air suction and wettability are poor, and the interface combination is poor; meanwhile, through the ball milling process, the phenomenon that when ferrous sulfide is directly added, agglomeration is easily caused is avoided; in the ball milling process, the other part of Fe atoms is added into copper atoms in a solid solution manner so as to achieve the solid solution reinforcing effect, and the copper base composite is reinforced. The antifriction and anti-sticking capacity of FeS is mainly used for replacing lead in the original copper base bearing material, lead pollution is avoided, meanwhile, through Fe solid solution, the copper-based sliding bearing material is reinforced, and effective unifying of high strength and good lubricating characteristics of the lead-free copper-based sliding bearing material is achieved.