41results about How to "Improve material performance" patented technology

The invention discloses a water absorption rate detection method and system for a macromolecular water absorption material, and relates to the technical field of macromolecular water absorption materials.The water absorption rate detection method for the macromolecular water absorption material comprises the following steps that the initial weight of a to-be-tested macromolecular water absorption material sample is weighed; dropwise adding test liquid to the surface of the polymer water-absorbing material sample by using a burette; obtaining test feature data; factors influencing the water absorption performance of the polymer water absorption material are obtained; predicting key factors influencing the water absorption rate of the polymer water absorption material; and judging whether the water absorbing material meets a preset performance standard or not. Conditions of each experiment can be ensured to be consistent, so that repeatability and reliability of results are improved, the water absorption process can be accurately controlled by dropwise adding test liquid through a burette, the water absorption behavior of the material can be better understood, key factors are adjusted through an optimization algorithm, then the performance of the material can be improved, and the test accuracy is improved. And the preset performance standard is met.

The invention relates to the field of composite materials, in particular to a screen cloth composite TPU film and a preparation method thereof. The TPU film is prepared by the following steps: carrying out melt extrusion on TPU particles, and calendaring to form the TPU film; the mesh cloth is pretreated, specifically, the TPU film is smashed, and TPU particles are obtained; spraying TPU particles into the mesh cloth, filling the TPU particles into meshes of the mesh cloth, and heating to melt the TPU particles to obtain pretreated mesh cloth; a TPU film is attached to at least one face of the pretreated mesh cloth, hot pressing is conducted, and the mesh cloth composite TPU film is obtained. The TPU film is crushed into the TPU particles and sprayed into the mesh cloth, so that the meshes of the mesh cloth are filled with the TPU particles, and the TPU particles are fused and tightly combined with the mesh cloth in the heating process, so that the adhesion stability between the mesh cloth and the TPU film is effectively improved, and the problems of infirm adhesion, cracking and the like easily occurring in a traditional method are solved.

The invention discloses a machining method for an input shaft of an electric drive assembly generator. The machining method comprises the following steps of first finish turning, second finish turning, gear hobbing, spline broaching, heat treatment, spline hard broaching, outer circle and end face grinding and gear grinding. In the step of hard pulling of the spline, the internal spline is subjected to hard pulling after being heated, the large diameter, the small diameter and the tooth side of the internal spline are subjected to hard pulling, and the precision of the internal spline subjected to heat treatment is corrected. In the step of grinding the outer circle and the end face, an internal spline of the input shaft of the generator is expanded, the end face and a center hole are positioned, and the outer circle and the end face of the input shaft of the generator are ground. In the gear grinding step, the internal spline of the input shaft of the generator is expanded, the end face is positioned, and gear grinding is conducted on the gear. Thermal deformation of the internal spline is corrected after heat treatment, then the internal spline is adopted as a standard for machining of subsequent procedures, the standard is unified, and it is guaranteed that the internal spline of the generator input shaft and the external spline of the generator rotor are well matched, torque is transmitted, a bearing operates stably, and operation stability of an electric drive assembly is guaranteed.

The invention relates to the technical field of composite materials, in particular to a high-strength elastic composite aerogel and a preparation method thereof.Negative Poisson ratio composite aerogel designed with a centripetal structure cooperating with a supramolecular system is prepared, the supramolecular system design is adopted, a hydrogen bond network of nanofibers serves as a weak interface bonding layer, and the elastic composite aerogel with the high strength is prepared. The fiber and the silane-based material interface are covalently interlocked to form a firm supramolecular system, and a centripetal structure is cooperated to realize a coupling effect between resistance and deformation. Through the cooperative strategy, the composite aerogel obtains excellent specific modulus and good recovery speed, and can be qualified for high-impact and high-strength application scenarios.

The invention discloses a treatment method for medium-temperature roasting and curing of electrolytic manganese residues, and belongs to the technical field of solid waste treatment. The method comprises the following steps: crushing an electrolytic manganese residue raw material, carrying out ball-milling mixing on the crushed electrolytic manganese residue raw material, calcium silicate and barium chloride to obtain a mixed material, and calcining the mixed material at 750-1000 DEG C to obtain the solidified electrolytic manganese residue. The heavy metal ion leaching concentration of the solidified electrolytic manganese residues is lower than the national limit standard, secondary pollution is prevented, and the method is short in technological process, easy to operate, low in additive dosage, low in cost and capable of being applied and popularized on a large scale.

The invention discloses a method for post-root canal therapy resin closure retreatment in a medullary cavity, and relates to the technical field of root canal therapy, and the method comprises the following steps: S1, pre-operation sampling; s2, removing the restoration and other materials: removing the restoration on the surface of the dental crown and the resin sealing material in the medullary cavity by using a material removal technology and a tool, wherein the material removal technology and the tool comprise a grinding device with a sensor or a laser technology; s3, re-cleaning and disinfecting the root canal: after cleaning the root canal, using a root canal disinfection drug added with nano-silver particles, and mixing the nano-silver particles with traditional disinfection drugs such as calcium hydroxide paste; s4, filling and re-treating: blending the color of the resin by using a computer color matching technology before filling the medullary cavity; the system further comprises an intelligent design monitoring platform. According to the invention, a grinding device with a sensor or a laser technology is adopted, so that the damage to tooth tissues, especially key parts, is remarkably reduced, and the treatment safety and accuracy are improved.

The invention relates to the technical field of thermoplastic material foaming, in particular to a preparation method of an ultralight foaming material with micropore channels. The invention relates to an ultralight foaming material with micropore channels. The ultralight foaming material comprises the following substances in parts by weight: 80-90 parts of thermoplastic matrix resin; 0.1 to 2 parts of a pore-foaming agent; 0.1 to 0.8 part of a functional auxiliary agent; 10 to 20 parts of auxiliary materials; the pore-foaming agent comprises one or a mixture of more of activated carbon, zeolite, porous ceramic and hollow glass microspheres. According to the technical scheme, the thermoplastic matrix resin is selected to be combined with the pore-forming agent, the composite material formed after foaming treatment has a good vacuum channel structure, the density of the material is effectively reduced, the porosity of the material is improved, on the basis, selection of the pore-forming agent is optimized, and the porosity of the material is improved. The prepared ultralight foaming material has different pore structures and adsorption performance, and more excellent material performance can be obtained through mixed use.

The utility model belongs to the technical field of steel plate flattening, and particularly relates to a high-precision steel plate forming device which is used for flattening a steel plate, comprises a base and a hydraulic mechanism, and further comprises a first pressing die, a second pressing die and a cold water circulating system. A plurality of vertical guide rods are arranged at the corners of the base, a hydraulic mechanism is arranged at the upper ends of the guide rods, and the driving end of the hydraulic mechanism is downwards connected with the first pressing die and drives the first pressing die to move up and down along the guide rods. A corresponding second pressing die is arranged on the base, and a stress groove is formed in the second pressing die. A plurality of water inlets and water outlets are further formed in the side ends of the first pressing mold and the second pressing mold and connected with a cold water circulation system located on one side of the base, and the cold water circulation system is used for rapidly cooling the steel plate. The rapid cooling process can effectively reduce the thermal deformation and residual stress of the steel plate, improve the forming quality and rapidly level the steel plate.

The embodiment of the invention discloses a high-strength corrosion-resistant CuNi10Fe1Mn alloy copper pipe and a preparation method thereof, relates to the technical field of non-ferrous metal material manufacturing, and aims to solve the technical problem of poor production in the prior art. According to the high-strength corrosion-resistant CuNi10Fe1Mn alloy copper pipe, the content of Ni ranges from 9.0% to 11.0%, the content of Fe ranges from 1.0% to 2.0%, the content of Mn ranges from 0.5% to 1.0%, the sum of impurity elements does not exceed 0.2%, and the balance is Cu.

This invention belongs to the field of biomedical materials technology, specifically relating to a chitosan hemostatic sponge and its preparation method. This patent addresses the problems of residual acetic acid and side reactions, low strength, and low absorbency caused by cross-linking methods during the preparation of chitosan hemostatic sponges. It innovatively proposes a method for physically cross-linking chitosan hemostatic sponges using hydrogen bonding-electrostatic synergistic superabsorbency based on alcohol-regulated substances. By introducing alcohols to regulate the electrostatic interaction between chitosan amino groups and acetic acid, while simultaneously adjusting the hydrogen bonding interaction between chitosan molecules, and introducing other polymer materials to construct a semi-interpenetrating network, the overall material properties are enhanced. The chitosan hemostatic material prepared by this process, although without the addition of cross-linking agents, still exhibits an insoluble sponge-like structure, good flexibility, and excellent absorbency and hemostatic effect.

The invention relates to the technical field of hot rolling, in particular to a process method for preparing a hot rolling functional plate and roller through micro-beam plasma deposition, according to the process method, an infrared thermal imager is used for monitoring temperature distribution of the surface in the deposition process in real time, and according to real-time temperature data, a self-adaptive path planning algorithm is adopted for dynamically adjusting the deposition path and speed; after each layer is deposited, the interlayer cooling time is adjusted according to temperature feedback, uniform temperature distribution of each layer is kept, and local overheating is avoided; high-hardness and high-melting-point nano-particles are adopted as a reinforcing phase, and the nano-particles are uniformly dispersed in a deposition material through ion spraying, so that particle aggregation is prevented; nano-particle reinforced composite material powder is adopted, so that nano-particles are uniformly distributed in a matrix material; the problems of heat accumulation, stress concentration, coarse structure, poor wear resistance and the like in the process of preparing the hot rolling functional plate and roller through traditional micro-beam plasma deposition are solved.

The invention relates to the technical field of composite material structural members, in particular to a design and construction method for recycling GFRP rib concrete beams of retired fan blades. A recycled GFRP (glass fiber reinforced plastic) reinforced concrete beam for retired fan blades comprises a concrete beam body, the bar framework is arranged in the concrete beam body and comprises at least two GFRP longitudinal stress bars arranged in the length direction of the concrete beam body and GFRP stirrups fixedly connected with the GFRP longitudinal stress bars and arranged in the length direction of the concrete beam body at intervals; wherein the GFRP longitudinal stress bars and the GFRP stirrups are all made of waste fan blade composite materials through mechanical recovery. The mechanically recycled GFRP rib material is used for replacing a traditional steel bar to serve as a stress bar of a concrete beam body, the environment pressure brought by large-scale composite material waste can be effectively relieved through recycling of the retired fan blade, conversion from a retired material of new energy equipment to a structural engineering material is achieved, and development of low-carbon circular economy is promoted.

An ultrasonic-assisted large strain extrusion cutting device comprises a frame module, an ultrasonic-assisted extrusion module, an ultrasonic-assisted tool module, a first ultrasonic power supply and a second ultrasonic power supply. The frame module is fixedly clamped on a machine tool turret, the ultrasonic-assisted extrusion module and the ultrasonic-assisted tool module are both installed on the frame module, the first ultrasonic power supply is electrically connected to the ultrasonic-assisted extrusion module, and the second ultrasonic power supply is electrically connected to the ultrasonic-assisted tool module. The present invention applies ultrasonic vibration to a cutter head and an extrusion block, so that the chips pass through the gap between the fan-shaped extrusion block and the cutter head, and the chips are extruded to produce large strain deformation, thereby improving the material properties of the chips, and being able to adjust the spacing and angle between the extrusion block and the front cutting edge of the cutter head, so as to study the influence of ultrasonic vibration and the spacing and angle between the extrusion block and the front cutting edge of the cutter head on the large strain deformation and material properties of the chip strip.

The application provides a tempering method suitable for an acid pickling line, comprising the following steps: step S1: calculating actual elongation rate by using a laser speed meter and a thickness gauge to respectively measure the front and rear speed and the front and rear thickness in real time; step S2: performing elongation rate closed-loop control according to the actual elongation rate measured in real time by taking the rolling force as an adjusting amount; step S3: performing compensation on the rolling force to eliminate the elongation rate fluctuation caused by acceleration and deceleration of the unit; and step S4: performing feedforward control by using the thickness deviation measured by the front thickness gauge to suppress the elongation rate fluctuation. The application also provides a tempering system and device suitable for the acid pickling line and a medium. The application realizes the tempering function of high-precision elongation rate closed-loop control by using the last stand in the acid pickling line, widens the use function of the acid pickling line, and improves the surface quality and material performance of the product.

The invention belongs to the technical field of special rubber, and relates to nuclear power rubber resistant to a turbine generator lubricating medium and a preparation method of the nuclear power rubber. The invention provides a nuclear power turbonator lubricating medium resistant rubber. The nuclear power turbonator lubricating medium resistant rubber is prepared from hydrogenated butyronitrile, a vulcanizing activator, stearic acid, an anti-aging agent, a plasticizer, a wear-resistant agent, a silane coupling agent, a vulcanizing agent, an accelerant, ultra-short aramid fibers and alkyl phenolic resin. The ultra-short aramid fiber and the alkyl phenolic resin are introduced, so that the technical problems that the nuclear power turbonator lubricating medium resistant rubber is easy to form holes, fracture and swell in the use process due to permeation of substances such as hydrogen, a non-polar solvent, fuel oil and mineral oil are solved.

The invention relates to the technical field of metal material surface treatment, in particular to an industrial aluminum profile corrosion-resistant surface treatment process which comprises the following operation steps: S1, primary cleaning: putting a to-be-treated aluminum profile into a pretreatment device by a carrying device for primary cleaning; s2, water washing is conducted, specifically, the aluminum material subjected to preliminary cleaning is transferred to an agent removing device through a carrying device, and residual chemical substances are removed; s3, anodic oxidation is conducted, specifically, the washed aluminum material is transferred to an electrolysis device through a carrying device, and an anodic oxidation reaction is started by adjusting proper voltage and time parameters; s4, strengthening is conducted, specifically, the nanometer treatment device is started while the aluminum material subjected to anodic oxidation is moved out of the electrolysis device, and it is ensured that the treated material is evenly dispersed in the electrolyte; s5, drying: taking out the aluminum material after the reaction and strengthening are completed, transferring the aluminum material to a curing device for drying, and heating to a set temperature until the aluminum material is completely dried; and S6, inspection: inspecting whether the surface quality and the corrosion resistance of the finished product reach the standard or not.

The invention relates to an aerogel composite material impregnation aging device and an aerogel composite material impregnation aging system, and belongs to the technical field of aerogel preparation. The gum dipping and aging device comprises a gum dipping and aging outer cylinder and a gum dipping and aging mold arranged in the gum dipping and aging outer cylinder, and an aerogel base material to be soaked and aged is placed in the gum dipping and aging mold; a circle of supporting table is annularly arranged on the inner wall of the gum dipping and aging outer cylinder, and the gum dipping and aging mold is arranged on the supporting table; the gum dipping aging mold is divided into a first gum dipping area and a second gum dipping area, a plurality of parallel porous partition plates are vertically arranged in the first gum dipping area and the second gum dipping area, and the porous partition plates in the first gum dipping area are perpendicular to the porous partition plates in the second gum dipping area; the aerogel base material is arranged between the adjacent porous partition plates in the first impregnation area or the second impregnation area. Compared with the prior art, the method does not need to depend on meshes, obvious wrinkles on the surface of the base material can be effectively avoided, and the mold space can be utilized to the maximum degree so as to reduce space waste.

The invention discloses a mechanical energy storage and release device and a thread trimming device. The mechanical energy storage and release device comprises a base; the movable part can move relative to the base; the energy storage part acts between the base and the movable part and is configured to store mechanical energy for driving the movable part to move; the state switching type locking mechanism has a first mechanical state and a second mechanical state; wherein in the first mechanical state, the state switching type locking mechanism introduces geometric constraint on a force application path of the energy storage component, so that the movable part resists the acting force of the energy storage component and is locked; the state switching type locking mechanism can be switched from the first mechanical state to the second mechanical state by applying an external triggering effect; and in the second mechanical state, the geometric constraint is relieved, and the energy storage part is released and drives the movable part to move.

Disclosed are a low-pressure casting multi-sprue process and device for an aluminum alloy wheel. A multi-sprue casting method is adopted, and a plurality of sprues are arranged at the end of the inner rim of a wheel, so that molten aluminum enters the inner rim first, then enters from a center sprue after a mold cavity at the rim is full of the molten aluminum, and is pressurized and cooled after the mold cavity is full of the molten aluminum. During cooling, starting from the outer rim of the wheel filled with the molten aluminum last, side mold ring water coolers are started. The outer rim begins to solidify in the cooling process, and the spokes and the rim are simultaneously solidified in sequence, so that the crystallization and solidification time of the casting at the rim and the spokes is greatly shortened, the compactness of the internal structure of the casting is improved while the production efficiency is improved, the mechanical properties of the materials are good, and particularly, the elongation of the spokes is greatly improved.

The invention discloses stainless steel wire straightening, calendering and automatic winding equipment which comprises a rack and further comprises a steel wire coil pay-off mechanism, a first tension guide wheel mechanism, a stress straightening mechanism, a calendering mechanism, a second tension guide wheel mechanism, a wire arranging wheel mechanism and a flat wire winding mechanism which are arranged on the rack. The steel wire coil pay-off mechanism is used for outputting a whole coil of stainless steel wires; the tension guide wheel mechanism I is used for adjusting tension and guiding the steel wire to be conveyed to the stress straightening mechanism; the stress straightening mechanism is used for circumferentially twisting the conveyed steel wire so as to release the multi-dimensional stress of the steel wire; the calendaring mechanism is used for calendaring the steel wire subjected to stress straightening into a flat shape; the second tension guide wheel mechanism is used for adjusting tension and guiding the rolled flat steel wire to be conveyed to the wire arranging wheel mechanism. The wire arranging wheel mechanism is used for guiding the steel wire to be wound neatly and tightly in the winding process. And the flat wire winding mechanism is used for winding the calendered flat steel wire.

The invention discloses a flexible ferroelectric material, a preparation method and application thereof, and belongs to the technical field of materials.The preparation method comprises the steps that ultrapure water is added into a reactor, polyvinyl alcohol and poly (1, 3-propylene glycol) are added at the same time, then the reactor is heated until the polyvinyl alcohol and the poly (1, 3-propylene glycol) are completely dissolved, and a first mixed solution is prepared; cooling the first mixed solution, adding the organic mixed solution into the first mixed solution, and uniformly mixing to obtain a second mixed solution; carrying out heat preservation on the second mixed solution, carrying out first reaction treatment, heating the second mixed solution after the first reaction is completed, and carrying out second reaction treatment; after the second reaction treatment is completed, cooling the second mixed solution to room temperature. The preparation method disclosed by the invention has the characteristics of relatively low temperature range and mild reaction process, and avoids the influence of a high-temperature environment on thermal decomposition or structural change of the material.

The present invention belongs to the technical field of metal-based composite material preparation, discloses a diamond / metal high thermal conductivity metal-based composite material for electronic packaging and a preparation method, chrome-plating treatment is performed on the diamond surface to obtain chrome-plated diamond powder; the matrix metal powder and graphene are evenly mixed to obtain graphene-coated metal powder; the chrome-plated diamond powder and the graphene-coated metal powder are annealed and heat-treated respectively, and the heat-treated powders are mixed and sintered. In the present invention, by chrome-plating on the diamond surface, a "carbon-chromium" core-shell structure is formed, and a "metal-carbon" core-shell structure is formed by using graphene-coated metal, thereby converting the original "metal-carbon" interface of the matrix and the reinforcement into a "carbon-chromium" interface. After hot pressing and sintering the "carbon-chromium" interface to form a reaction bonding interface, the reinforcement and the matrix metal interface bonding strength can be improved, the purpose of improving the thermal conductivity of the composite material is achieved, and the demand for efficient heat dissipation of microelectronic devices is met.

The present invention relates to a uniformly modified cathode material for a silicon-based lithium ion battery, a preparation method therefor and an application thereof. The structure of cathode material for a silicon-based lithium ion battery is that carbon atoms are uniformly dispersed and distributed in a silicon (II) oxide matrix on an atomic scale. In a focused ion beam-transmission electron microscope (FIB-TEM) test of the cathode material for the silicon-based lithium ion battery, an energy spectrum surface sweep of a particle section shows that the carbon elements, oxygen elements and silicon element inside the particles are uniformly distributed; the average particle diameter D50 of the particles in the cathode material for the silicon-based lithium ion battery is 1 nm to 100 µm, and the specific surface area is 0.5 m2 / g to 40 m2 / g; and the mass of the carbon atoms accounts for 0.1% to 40% of the mass of the silicon (II) oxide matrix. In the present invention, a carbon-containing gas source is introduced during the preparation process of silicon (II) oxide, and the distribution of carbon atoms in the silicon (II) oxide is bulk phase distribution, so that the cathode material has the advantages of carbon bulk phase doping, which improves the electrical conductivity of the material and the cycling stability of lithium ion batteries.

Disclosed are a silicon-carbon composite material for a secondary lithium battery and a preparation method therefor. The silicon-carbon composite material for a secondary lithium battery comprises a core containing a silicon-based material, a first coating layer, and a second coating layer. The first coating layer is an electrically conductive layer, the second coating layer is an ion-conducting layer, and the first coating layer and the second coating layer are not limited to a certain order. In the silicon-carbon composite material provided by the present disclosure, the coating layer is a composite material, which combines the electroconductive (or ion-conducting) capability of a matrix material, and the reinforcing and toughening properties of a reinforcing phase, such that the material has a strong anti-expansion capability. In the secondary battery, the coating layer is less prone to breaking, which results in less fresh surface and so reduces the consumption of an electrolyte and improves the cycle performance of the battery. Additionally, the preparation method of the present disclosure is simple and easy to implement, and is suitable for large-scale industrial production.

The invention discloses a novel protection system based on a transformer substation secondary screen cabinet and a use method, and belongs to the technical field of transformer substation secondary screen cabinet protection. The novel protection system based on the secondary screen cabinet of the transformer substation comprises a top protection module and a power supply protection module, wherein the top protection module is connected with the power supply protection module through an adjustable plate; the top protection module is directly located on the top of the secondary screen cabinet. The top protection module comprises a top plate, side plates, supporting plates, supporting feet, upper barrier strips, folded edges and lower barrier strips. Side plates are arranged on the front side and the rear side below the top plate, supporting plates are arranged on the inner sides of the two side plates, supporting feet are arranged below the supporting plates, and lower blocking strips are arranged on the left side and the right side below the top plate. Folded edges are arranged on the left side and the right side of the top of the top plate; the device has the functions of preventing water, dust, rats, snakes, birds, insects and other small animals possibly entering a main control room, and preventing mistaken touch, mistaken touch, misoperation and the like of operators.

The invention provides a pyroelectric ceramic material and a preparation method thereof, and belongs to the technical field of pyroelectric material preparation, the preparation method comprises the following steps: taking Pb3O4, ZrO2, TiO2, Nb2O5, MnO2, Sb2O3 and Al2O3 as raw materials, adding Zr balls to carry out primary ball milling, then drying and pre-sintering, adding Zr balls into the obtained intermediate material to carry out secondary ball milling, and then successively carrying out granulation, dry pressing molding, sintering, silver coating and polarization to obtain the pyroelectric ceramic material. The pyroelectric ceramic material is prepared. By adjusting the formula and the preparation process of the pyroelectric ceramic material, the performance of the pyroelectric ceramic material is optimized, so that the pyroelectric ceramic material has better comprehensive performance, the performance is more stable, and the requirement of the infrared detection market for the comprehensive performance of the material is met.

The present invention relates to a method of manufacturing a cellulose product having a flat or non-flat product shape by a pressure moulding apparatus comprising a forming mould. The forming mould has a forming surface defining said product shape, The method comprises the steps of: arranging a cellulose blank containing less than 45 weight percent water in said forming mould; heating said cellulose blank to a forming temperature in the range of 100°C to 200°C; and pressing said cellulose blank by means of said forming mould with a forming pressure acting on the cellulose blank across said forming surface, said forming pressure being in the range of 1 MPa to 100 MPa.

An integral geogrid includes a plurality of interconnected, oriented strands having an array of openings therein that is produced from a coextruded multilayer polymer sheet starting material. By virtue of the construction, the coextruded multilayer sheet components provide a crystalline synergistic effect during extrusion and orientation of the integral geogrid, resulting in enhanced material properties that provide performance benefits to use of the integral geogrid in soil geosynthetic reinforcement.

The invention provides a hierarchical porous cement-based seawater uranium extraction material and a preparation method thereof. The material is in a multi-layer roll shape, directional pore channels are formed in the material, and macroscopic gaps are formed between layers; calcium carbonate whiskers grow on the inner walls of the directional pore channels in situ; the hierarchical pore cement-based seawater uranium extraction material is prepared from the following final raw materials in parts by weight: 100 to 150 parts of sulphoaluminate cement, 50 to 120 parts of ground steel slag powder, 15 to 40 parts of acrylamide monomer, 0.4 to 1.5 parts of N, N '-methylene bisacrylamide, 0.05 to 0.4 part of ammonium persulfate and 70 to 150 parts of deionized water. The preparation method comprises the following steps: firstly, preparing a KH-550 modified solution and a PAN / DMSO solution, carrying out material amination and vacuum impregnation phase conversion to form a PAN coating layer, and then carrying out amidoximation reaction. According to the material, the marine uranium extraction efficiency and the comprehensive performance of the material are remarkably improved; the method provided by the invention is flexible and controllable in process and has good industrial amplification potential.