42results about How to "Avoid density" patented technology

The invention discloses a traffic jam detection method based on a video analysis technology. Based on video segmentation and key frame extraction, traffic jam detection is realized by acquiring three jam characteristic quantities, namely average dissimilarity of a video lens, key frame number and average optical flow field energy and adopting a multi-class support vector machine (SVM) method. By using the new traffic jam detection method provided by the invention, the problem of difficulty in completely or accurately acquiring traffic parameters such as traffic volume, vehicle speed, density and the like in the prior art is avoided, the running locus of a vehicle does not need to be tracked, the result of detecting the traffic jam state is more accurate, and the method can be used for well assisting the traffic department in knowing about the traffic jam state.

The invention relates to a method for controlling liquid drops by virtue of a micro-electromagnetic bar. According to the method, a micro-electromagnetic bar and a substrate which are subjected to super-hydrophobic surface treatment are taken as platforms based on competition of magnetic force, surface tension and gravity, the micro-electromagnetic bar is switched on or off so as to absorb and release magnetic bead-containing liquid drops on the surface of a super-hydrophobic surface, and the operations of transportation, fusion and mixing of the magnetic bead-containing liquid drops and the control of the separation between solid-phase magnetic beads and liquid-phase magnetic beads in the magnetic bead-containing liquid drops are finished by virtue of placement of the micro-electromagnetic bar or a liquid drop seating platform. According to the method for controlling the liquid drops by virtue of the micro-electromagnetic bar, the liquid drops can be rapidly and flexibly controlled, and the actual application and rapid development of a digital microfluidic technique are hopefully promoted.

The invention relates to octenyl succinic acid starch ester, a lipid-soluble nutrient microcapsule as well as a preparation method application of the lipid-soluble nutrient microcapsule. A preparationmethod of octenyl succinic acid starch ester comprises the step of carrying out esterification reaction on gelatinized starch and octenyl succinic anhydride in a cavitation emulsification process, soas to obtain octenyl succinic acid starch ester. According to the preparation method, the esterification reaction is promoted and intensified by virtue of the cavitation emulsification process, remarkably substitution occurs in a crystallization region and an amorphous region of the starch through the molecular collision of the collision between gelatinized starch and octenyl succinic anhydride,so that the esterification rate of prepared octenyl succinic acid starch ester is increased, and the emulsifying property is greatly improved. The method is rapid and efficient, and a hydrolysis stepis omitted after the esterification, so that the problems that molecular chains are damaged in different degrees due to the hydrolysis, the chain length and content of amylose are remarkably decreased, the compactness of a film formed by octenyl succinic acid starch ester is decreased, and the film easily absorbs moisture and conducts heat and is crispy are avoided, and the application performanceof octenyl succinic acid starch ester is improved.

A gas-electric power integrated power system for light communication means is composed of integrating control system, electric drive system for low speed, IC engine system for high speed, and mechanical transmission system.

The invention discloses a technology for extracting lithium from lithium-containing alkaline brine based on a centrifugal extractor. The technology comprises the following steps including extraction water phase providing, extraction organic phase providing, the extraction step, the washing step, the reverse extraction step and the regeneration step. The brand new extraction system is adopted in the technology, the lithium is extracted from the lithium-containing alkaline brine system, and the extraction-washing-reverse-extraction-regeneration total process technology based on the centrifugal extractor is determined for the first time instead of staying on the basic study on the extraction workshop section, the series, the flow rate, reagent concentration and other technology parameters ofevery workshop section to which the extraction system is adaptive are determined finally, and the industrial production technology path based on the centrifugal extractor is provided. The technology for extracting lithium from lithium-containing alkaline brine is particularly suitable for a filter liquor system generated in the lithium carbonate product preparing process through a lithium chloridesolution, accordingly, the lithium is further extracted from the lithium chloride solution, real comprehensive cyclic utilization of salt lake brine is achieved, and practical significance is achieved.

The invention relates to a battery electrode paste composition, containing a silane coupling agent-modified active substance, that contains a silane coupling agent-modified active substance, a conductive additive, an adhesive, and a maleimide additive. This composition may provide better battery safety and longer cycle life.

Belonging to the field of maneuvering target tracking, the invention puts forward an interactive multi-model estimation method based on covariance intersection. The realization process of the method comprises: (1) model condition estimating and matching matrix interacting: used for calculating the initialization input of each model condition estimator; (2) model condition estimation filtering: used for updating the condition estimation of each model; (3) model matching matrix updating: using the covariance intersection method to calculate the matching matrix of each model; and (4) model condition estimation fusing: taking the matching matrix of each model as a weighted value, and calculating total estimation output by fusing the model condition estimation. The method of the invention overcomes the problem that a model probability does not match a model probability density function product existing in traditional interactive multi-model estimation, has the advantages of small calculation complexity and a good estimation effect, and is applicable to maneuvering target tracking for civil and military use.

The invention discloses a rapidly solidified aluminum matrix composite enhanced by SiCp particles. The rapidly solidified aluminum matrix composite is prepared from the following components by volume percent: 2.5-25% of SiCp particles, and the balance of rapidly solidified aluminum alloy or pure aluminum powder. The preparation method comprises the following steps of: cleaning and baking the SiCp particles by deionized water after high-temperature oxidation and pickling; then drying the rapidly solidified aluminum alloy or pure aluminum powder to obtain high-energy mixed powder after mixing the powder; and finally, orderly carrying out repeated extrusion and common positive extrusion on the high-energy mixed powder to obtain the rapidly solidified aluminum matrix composite enhanced by the SiCp particles. The rapidly solidified aluminum matrix composite enhanced by the SiCp particles has the advantages of high strength characteristics and high wearability. By adopting the preparation method disclosed by the invention, the rapidly solidified aluminum matrix composite enhanced by the SiCp particles prepared in manners of carrying out pretreatment and high-energy mixing on the SiCp particles and then carrying out repeated severe plastic deformation is even in distribution of SiCp particles, good in combination with a matrix interface, and isotropous in aluminum matrix composite.

The invention relates to a preparation method of an external thermal insulation composite material, comprising the following steps: (1) performing a hydrophobic treatment on a hydrophilic first reinforcement to obtain a hydrophobic first reinforcement; (2) connecting the hydrophobic first reinforcement and a hydrophilic second reinforcement to obtain a preform; and (3) impregnating the part of thepreform including at least the second reinforcement with a hydrophilic impregnant used for impregnation, and then drying to obtain the external thermal insulation composite material. The invention also relates to an external thermal insulation composite material prepared by the above preparation method. The an anti-scouring aerogel composite material prepared from the external thermal insulationcomposite material can be used for profile machining to obtain a component of a desired profile, or the overall external profile machining is carried out after assembling of an aircraft, so as to accurately ensure aerodynamic shape of the aircraft.

The invention relates to a mortar stirring bucket with a mortar flow blocking device, which comprises a discharging valve, an electric motor, a speed reducer, a charging opening, a bucket cover and a mortar bucket, wherein the output shaft of the speed reducer is connected with a stirring shaft with blades. The mortar stirring bucket is characterized in that the bucket cover is arranged at the top of the mortar bucket and is provided with the speed reducer and the electric motor which are mutually connected; the charging opening is arranged on the bucket cover; a charging opening cover is arranged at the top of the charging opening; and a mortar flow blocking device is arranged at the upper part of the inner wall of the mortar bucket. The invention has the advantages that the sand and the liquid are quickly mixed, the stirring time is shortened, the stirring quality of the mortar is enhanced, and the phenomena of agglomeration, nonuniform density and the like are avoided; and the mortar blocking device has simple structure and convenient installation and disassembly.

The invention relates to an image capture module control method and an electronic device, in particular to the image capture module control module, which is applied to the electronic device having an automatically focusing photography function. The electronic device comprises an image capture module which comprises a body and a lens part capable of moving relative to the body; and the image capture module control method comprises the following steps of: performing automatically focusing operation on a target object and making the lens part move from an initial position to a focusing position; starting a control module which is used for controlling the lens part to move after finishing the automatically focusing operation; and deaccelerating the speed of the lens part moving back to the initial position by the control module. According to the technical scheme, sounds caused by collision between the lens part and the body can be avoided.

The invention discloses a foamed aluminum sandwich board bend forming method which is characterized by including steps of (1), compounding a layer of light absorption agents on the panel surface of a foamed aluminum sandwich board; (2), marking a machining straight line on the surface of the foamed aluminum sandwich board; (3), irradiating along the machining straight line on the surface of the foamed aluminum sandwich board by a laser with a scanning rate ranging from 3mm / s to 8mm / s, and heating the foamed aluminum sandwich board by accumulation of multiple irradiations to enable the same to generate thermal stress and generate trace bending deformation back to a laser beam; and (4) repeating the step of (3) until the bending requirements are met. By the foamed aluminum sandwich board bending method, any bending parts, special-shaped parts, other complicated parts with three-dimensional curved surfaces and the like can be formed. The foamed aluminum sandwich board bend forming method has the advantages that forming precision is high, production cycle is short, the formed parts are high in flexibility, and a wide application foundation is provided for further application of the foamed aluminum sandwich board.

The invention discloses a making method of a PCB and a PCB, which relate to the technical field of printed circuit boards. The making method comprises the following steps: making plated through holesin the conductive bonding area of a first substrate; removing the metal layers on the hole walls of part of the plated through holes near one end of the conductive bonding area to obtain part of plated holes; filling part of the plated holes with an insulating material; and bonding a metal block to the conductive bonding area by a conductive bonding material. First, the through holes are plated, and then, the metal block is pressed by the conductive bonding material. Communication of the holes and the metal block is realized, and problems such as hole density reduction and loss of depth control drill bits caused by the making of large-aperture blind holes are avoided. Meanwhile, part of the metal layers on the hole walls of part of the plated through holes are removed, so that the area ofthe metal block contains both wall-plated through holes and non-through holes, and more design requirements can be met under the condition of guaranteeing the density of the holes.

The invention discloses a hierarchical heat driving floor planning and layout method which comprises the following steps of: firstly, arranging a plurality of modules according to a power sequence, and forming a module sequence; secondly, grouping the module sequence from front to back according to an area sum, dividing into a plurality of module layer groups with approximately equal area sum; thirdly, establishing an analysis heat mold for calculating the average temperature of the module groups; fourthly, acquiring a power distribution constraint graph of each module group; and fifthly, sequentially arranging the module groups above a heat dissipating device at the bottom layer according to the power density, the sequence from big to small and the respective power distribution constraint graph. In the method, a three-dimensional layout problem is converted to a two-dimensional layout problem, thereby avoiding putting a high-power density device in a pile of vertical regions, realizing power density balanced distribution in vertical and horizontal directions, efficiently reducing the hot spot amount and optimizing the chip area and the interconnecting wire length.

The invention discloses a far-end plasma reinforced chemical vapor deposition device and relates to the technical field of film preparation. The far-end plasma reinforced chemical vapor deposition device comprises a reaction chamber and a far-end plasma generation chamber communicating with the reaction chamber. A processing gas inlet is formed in the far-end plasma generation chamber. A byproduct exhaust port is formed in the reaction chamber. A platform is arranged in the reaction chamber. A substrate is placed on the platform surface of the platform. A direct-current discharging unit, a radio frequency discharging unit and a microwave discharging unit are simultaneously arranged in the far-end plasma generation chamber in an isolated mode. The direct-current discharging unit, the radio frequency discharging unit and the microwave discharging unit discharge synchronously so that the processing gas in the far-end plasma generation chamber can form plasma, and then the plasma is injected into the reaction chamber. Through the far-end plasma generation chamber, a plasma source meeting requirements is generated, the plasma density can be effectively controlled, the defect that the density of the formed plasma is low or space distribution is uneven is overcome, and the using efficiency and the processing efficiency of the far-end plasma reinforced chemical vapor deposition device are improved.

The invention provides a preparation method of an ITO (indium tin oxide) ceramic target material, which comprises the following steps: performing wet ball-milling mixing on In2O3 powder and SnO2 powder with the purity of 99.99% according to the mass ratio of (90-97): (10-3), and adding a small amount of organic additive in the ball-milling process to obtain ITO slurry with good flowing property; allowing the obtained ITO slurry to be subjected to spray granulation to obtain spherical ITO granulation powder ; carrying out compression molding on the obtained ITO granulation powder to obtain an ITO biscuit with a regular shape; then carrying out cold isostatic pressing secondary pressing on the ITO biscuit; degreasing the ITO biscuit subjected to cold isostatic pressing at low temperature to remove the organic additive; and carrying out hot isostatic pressing sintering on the degreased ITO biscuit to prepare the ITO target material with high density and low resistivity. In the hot isostatic pressing treatment process, low-carbon steel is selected as a sheath, stainless steel is used as an isolation material to prevent the sheath from reacting with the target material, and later stripping is facilitated. According to the method, the sintering temperature and the sintering time required in the ITO target material preparation process are effectively reduced, the problem that the production period of a traditional normal-pressure sintering process is too long is solved, and the method plays a crucial role in improving the production efficiency of the target material.

A recording apparatus includes: a recording device which includes recording elements by performing deposition of ink droplets including main droplets forming main dots on a recording medium and satellite droplets accompanying the main droplets and forming subsidiary dots; a dot pattern storage device which beforehand stores a plurality of dot patterns; and a dot pattern selector device which selects the dot patterns from the dot pattern storage device, wherein when one pixel satisfies i+j≦k, where i is a main dots total number to be recorded for the pixel, j is a subsidiary dots total number to be recorded for the pixel and k is a number of the main dots to be recorded for the pixel by the recording elements of one type, then the dot pattern selector device selects certain dot patterns for the pixel.

The invention belongs to the technical field of high polymer materials and biomedical engineering, and relates to a preparation method of hollow microspheres and application thereof. Alcohol (especially ethanol) which is mutually soluble with an organic solvent and water is used as a pore-foaming agent, and the polylactic acid glycolic acid microspheres are prepared through a one-step emulsification method. The microsphere prepared by the method has the characteristics of hollow interior, small density, diameter of 100-500 microns and narrow diameter distribution; microspheres with different internal structures can be prepared by adjusting the use amount of alcohol, and after the surfaces of the microspheres are modified with materials (such as gelatin) with biological activity, the microspheres have high application value in tissue engineering and cell carriers. Alcohol serving as a pore-foaming agent can form a stable solution with an oil phase, layering is avoided, and uniform microspheres with hollow interiors are obtained; meanwhile, the obtained microspheres are small in density, the diameter ranges from 100-500 microns , the requirements of three-dimensional cell culture microcarriers are met, and the method is suitable for cell culture.

The invention provides a point cloud data registration method, system and device and a computer storage medium. The registration method comprises the steps: obtaining a first point cloud data set anda second point cloud data set; respectively extracting semantic information of the first point cloud data set and the second point cloud data set; respectively obtaining semantic connection graphs ofthe first point cloud data set and the second point cloud data set according to the semantic information of the first point cloud data set and the second point cloud data set; registering the semanticconnection graphs of the first point cloud data set and the second point cloud data set to obtain a first transformation relationship between the first point cloud data set and the second point clouddata set; and converting the second point cloud data set according to the first conversion relationship. The point cloud data registration method provided by the invention starts from high-level semantic information, is not limited by low-level visual characteristics of the point cloud, is not easily influenced by other factors such as environmental factors and point cloud density, and has good robustness.

The recording apparatus which records dots on a recording medium in accordance with recording data for a plurality of pixels, the recording apparatus includes: a recording device which includes recording elements of a plurality of types which record the dots of mutually different types on the recording medium by performing deposition of ink droplets onto the recording medium, the ink droplets including main droplets forming main dots on the recording medium and satellite droplets accompanying the main droplets and forming subsidiary dots on the recording medium, each of the pixels having a plurality of graduated tone values respectively for the plurality of types of the recording elements, each of the graduated tone values being an integer not less than 0 and not greater than m that is not less than 2; a dot pattern storage device which beforehand stores a plurality of dot patterns specifying arrangements of the main dots for each of the plurality of types of the recording elements, the plurality of dot patterns being stored respectively in association with pattern numbers which are integers from 0 through m; a buffer device which stores droplet deposition data used by the recording device for the deposition of the ink droplets; and a dot pattern selector device which selects the dot patterns from the dot pattern storage device corresponding respectively to the graduated tone values for the plurality of types of the recording elements, the selected dot patterns being developed and stored as the droplet deposition data on the buffer device, wherein when one of the pixels satisfies a relationship of i+j≦k, where i is a total number of the main dots to be recorded for the one of the pixels by the recording elements of at least two of the types, j is a total number of the subsidiary dots to be recorded for the one of the pixels by the recording elements of the at least two of the types, and k is a number of the main dots to be recorded for the one of the pixels by the recording elements of one of the types if a graduated tone value of the one of the pixels for the recording elements of the one of the types is m, then the dot pattern selector device selects the dot patterns for the one of the pixels so that, between the recording elements of different types of the at least two types, there is no coincidence in positions of the main dots with each other and there is no coincidence in the positions of the main dots with positions of the subsidiary dots.

The invention discloses a method for preparing an aluminum oxide-based composite biological ceramic material by in-situ reaction. The method comprises the following steps: by using aluminum oxide, 3 mol% Y2O3-stabilized zirconium oxide and praseodymium nitrate as raw materials, carrying out ball-milling mixing, heating and rotary drying to obtain precursor powder; and granulating the precursor powder, carrying out dry pressing molding to obtain a ceramic green body, heating to 1400-1600 DEG C at a speed of 5-15 DEG C / min in an air atmosphere, carrying out heat preservation for 0.5-1.5 h, and carrying out furnace cooling to obtain the in-situ growth tabular crystal toughened alumina-based composite biological ceramic material. The invention also discloses a product prepared by the preparation method. According to the invention, the method is simple and convenient in process; and the toughening phase which is subjected to normal-pressure low-temperature sintering and in-situ synthesis isuniformly dispersed and is well combined with a matrix interface, the microstructure is uniform, and the compactness is high, so that the material has excellent mechanical properties and is suitablefor industrial mass production.

The invention discloses a method for measuring and calculating the foam volume in the foam concrete preparing process. The method includes the following steps that 1, the volume of foam of a concrete mixture is calculated by measuring the total volume of the concrete mixture, the actual density of the concrete mixture and the density of common concrete; 2, the amount of foam originally added into the concrete mixture is measured, and the foam reserving rate is calculated; 3, the design density is determined, and the theoretical volume of the foam needing to be added is calculated according to the ratio relationship between the theoretical foam volume and the amount of the foam originally added into the concrete mixture; 4, a certain amount of foam is supplemented into the concrete mixture, and the amount and the volume of the supplemented foam are calculated according to the foam volume of concrete mixture, the theoretical volume of the foam needing to be added and the foam reserving rate. According to the method, traditional thinking is broken through, foam concrete with the required design density is accurately obtained by accurately calculating the volume of the foam to be supplemented, and the quality of the foam concrete is effectively improved.

The invention discloses a fire-resistant communication cable. The cable includes four copper-magnesium alloy conductors 1, the outer surface of each copper-magnesium alloy conductor 1 is covered witha polyethylene layer 2 to form a wire 3, the four wires 3 are twisted in pairs to form a first stranded wire pair 41 and a second stranded wire pair 42, a ceramic silicon rubber sheath layer 7 coversthe outer surface of a polyvinyl chloride layer 6, and the ceramic silicon rubber sheath layer 7 is composed of the following components in parts by weight: 70 to 90 parts of methyl vinyl silicone rubber, 10 to 20 parts of an ethylene methacrylic copolymer, 4 to 8 parts of a vinyl trimethoxysilane, 12 to 15 parts of glass powder, 5 to 10 parts of boron nitride, 5 to 15 parts of magnesium oxide, 8to 15 parts of gas-phase method silicon dioxide, 1 to 5 parts of titanium tetraisopropanolate, 0.5 to 2 parts of dicumyl peroxide, 1 to 5 parts of methylphenyldiethoxysilane, 0.4 to 0.8 part of 1,3-dimethyl-6-aminouracil, 0.5 to 1 part of manganese dioxide, 3 to 15 parts of 1,6-bis(diphenylphosphino)hexane, and 1 to 2 parts of an antioxidant. According to the fire-resistant communication cable provided by the invention, the insulation and flame retardancy of the ceramic silicon rubber sheath layer are further improved, so that the insulation and flame retardancy of the cable are enhanced.

The invention discloses a method for extracting and separating lithium and alkaline earth metal from salt lake brine with a high sodium-lithium ratio, which comprises the following steps of providing an extraction water phase: taking the salt lake brine with the high sodium-lithium ratio as the extraction water phase which contains Li<+>, Na<+>, Ca<2+> and Mg<2+>, wherein the mass ratio of Na<+> to Li<+> is (10: 1)-(200: 1), providing anextraction organic phase: mixing an extraction agent, a synergistic extraction agent and kerosene, and preparing the extraction organic phase, wherein the extraction agent is a diketone compound, and the synergistic extraction agent is a halogen-containing organic phosphine compound, in an extraction step, mixing the extraction organic phase and the extraction water phase, performing counter-current extraction of more than one stage, and performing phase splitting after the extraction is balanced to obtain raffinate and a first loaded organic phase, and sequentially conducting sodium reverse extraction, lithium reverse extraction, calcium reverse extraction and magnesium reverse extraction on the first loaded organic phase, so that a sodium salt solution, a lithium salt solution, a calcium salt solution and a magnesium salt solution are obtained through separation. Sodium, lithium, calcium, magnesium and other alkaline earth metals are effectively separated from the salt lake brine with the high sodium-lithium ratio.

The invention discloses a novel buried type high-voltage cable sleeve and a manufacturing method thereof. The novel buried type high-voltage cable sleeve is prepared from the following raw materials in parts by weight: 100 parts of chlorinated polyvinyl chloride, 20-30 parts of polyvinyl chloride, 2.5-3 parts of an organic tin stabilizer, 2-4 parts of glyceryl stearate, 1-2 parts of oxidized polyethylene wax, 1-2 parts of polyethylene wax, 5-10 parts of talc powder, 5-10 parts of nano calcium carbonate, 5-10 parts of magnesium oxide, 0.2-0.6 part of bisphenol A, 1-3 parts of butyl acrylate, and 1-3 parts of a coloring agent, wherein the chlorine content of the chlorinated polyvinyl chloride is 68-75%, and the proportioning ratio of the glyceryl stearate to the glyceryl stearate to the polyethylene wax is (2-4):1:1. The novel buried type high-voltage cable sleeve disclosed by the invention has the beneficial effects of improving the overall performance of a material and increasing strength, toughness and shock resistance of the material.

The invention aims to provide a high performance liquid chromatography determination method of dihydroartemisinin content. According to the determination method, the dihydroartemisinin content is determined by high performance liquid chromatography through dissolution of dimethylsulfoxide, wherein dihydroartemisinin is a single isomer in dimethylsulfoxide. When liquor enters a moving phase, the isomer begins to convert and balance, and the chromatographic peak is double peaks. As the appearance time (converting and balancing time of the isomer) is precise and controllable, the sum of the areas of the double peaks is stable and the repeatability is good, so that the demand on precision of determination is satisfied. The determination method provided by the invention avoids the defect that the content determination precision is low due to conversion of the isomer and unstable and uncontrollable sum of the areas of the double peaks of dihydroartemisinin in other solvents, improves the accuracy and reliability of the content determination result of dihydroartemisinin, and provides a scientific basis for establishing a stable, reliable and comprehensive quality control method for dihydroartemisinin.

The invention provides application of a hydrophobic heat insulating and cooling film. The hydrophobic heat insulating and cooling film covers the surface of a matrix or is arranged above the surface of the matrix or is hung on the side, facing the light, of the interior of the matrix to lower the temperature of the side of the shady face of the matrix or the interior of the matrix; and the hydrophobic heat insulating and cooling film is a polymer porous film, the porosity is 30-90%, a spongy structure is arranged in the hydrophobic heat insulating and cooling film, holes and hole diameters arein bimodal distribution, and the width distributions are 0.2-0.6 microns and 1-5 microns. The hydrophobic heat insulating and cooling film is a flexible thin film material with excellent hydrophobicity, thermal insulating effect and cooling effect, shows excellent flexibility, can be bent and curled at will, can effectively lower the temperature of the side of the shady face of the matrix or theinterior of the matrix when being used as a thermal insulating and cooling film on the surface of the matrix with different characters and shapes and has extremely high using value and excellent application prospect.

The invention relates to an electrode current collector, a preparation method thereof, a negative electrode and a lithium ion battery. The electrode current collector comprises a porous substrate, a porous silicone rubber layer disposed on the porous substrate, and a metal layer disposed on the porous silicone rubber layer. The method, by improving the structure of the electrode current collector,suppresses the lithium dendrite growth of the lithium ion battery, greatly improves the cycle, rate and safety performance of the lithium ion battery, and avoids a decrease in mass energy density orvolume energy density of the battery caused by increasing the coating amount of the negative electrode, using a ceramic diaphragm, or reducing compaction density and the like, thereby greatly promoting the application of the electrode current collector in the fields of power batteries or other energy storage batteries.

The invention discloses a GR reinforced magnesium alloy-based composite material wire. The GR reinforced magnesium alloy-based composite material wire comprises the following raw materials in percentage by weight: 0.5-1.5% of GR powder and the balance magnesium alloy powder, and the sum of the weight percentages of the components is 100%. The problems of multiple stratification and burning loss ofGR are avoided, the problem of the interface between single-layer graphene GR and magnesium alloy grains is solved, the reinforcing effect of the GR on a matrix is fully exerted, and interface microcracks are avoided. The invention also provides a preparation method of the composite material wire. The method comprises the following steps: 1, high-energy ball milling; and 2, extrusion forming, specifically, extrusion forming is carried out on the GR powder and the magnesium alloy powder subjected to ball milling in the step 1 in two steps, firstly reciprocating extrusion is carried out, and then normal forward extrusion is carried out, so that the graphene-reinforced magnesium alloy-based composite material wire is prepared.

The invention provides a preparation method of a high-temperature creep-resistant ceramic material, which comprises the following steps: S1, weighing 50-90 parts by weight of high-purity alpha-Al2O3 powder, 25-50 parts by weight of tabular corundum powder, 1-3 parts by weight of zirconium oxide powder and 0.5-1 part by weight of sintering aid, taking water as a solvent, adding a water-soluble dispersant, and carrying out ball milling to obtain slurry; s2, carrying out vacuum defoaming on the slurry, adding a catalyst and an initiator, uniformly stirring, injecting into a mold, curing, and demolding to obtain a green body; s3, drying the green body, softening, cutting into green sheets, and drying; and S4, sintering the dried blank sheet to obtain the ceramic material. The bulk density of the powder of the raw material components in different parts by weight is high, and the prepared ceramic material is a high-density material with high density and high hardness; and through mutual cooperation and distribution of the raw material components, bridge support of tabular corundum in a material system, and phase change toughening of alpha-Al2O3 and zirconium oxide in a high-temperature stage, and the prepared ceramic material has improved high-temperature creep resistance, breaking strength and erosion resistance, and is not easy to break and long in service life.