63results about How to "Improve surface properties" patented technology

The application discloses a kind of plasma jet array devices for large size epoxy surface modification, including frame, tank, gas cylinder for loading inert gas, aperture network, high voltage power supply and metal insert;Tank and metal insert are fixed on frame, tank is flat tank and its slot is formed with jet airway for placing and fixing epoxy insulation, the bottom and side of tank are provided with jet spout arranged in array, jet spout is connected by gas inlet pipe, gas inlet pipe is arranged in the inside of side plate and bottom plate of tank;Aperture network is connected on jet spout and connects high voltage power supply, tank is grounded by wire;Metal insert is inserted above epoxy insulation, metal insert is grounded by wire.The application also discloses the use method applied to the above device.Adopting the application, the surface of large size epoxy insulation can be quickly and uniformly modified, and the charge release capacity is improved.

The application discloses a nitrogen-doped carbon-coated three-metal catalyst and a preparation method and application thereof, and belongs to the field of catalyst preparation and application. The method adopts sucrose, melamine and metal salt as low-cost raw materials, and forms an alkaline environment with the assistance of sodium hydroxide. In the environment, melamine is hydrolyzed into cyanuric acid, which is complexed with sucrose metal ions to form a stable supramolecular aggregate precursor containing metal, and then realizes effective encapsulation of the metal in a high-temperature pyrolysis process. The synergistic effect of the three metal elements Co, Ni and Zn significantly improves the performance of the catalyst, so that CoNiZnO@NC-600 not only exhibits high conversion rate (98.4%) and selectivity (99%) in the reaction of hydrogenation conversion of furfural to furfuryl alcohol, but also has excellent cycle stability, thereby providing a new efficient method for the hydrogenation conversion of biomass-derived compounds.

The invention relates to the technical field of oil and gas well reservoir transformation, and provides a permeability-enhancing surfactant for shale gas fracturing and a preparation method thereof, and the permeability-enhancing surfactant is synthesized from 3, 4-difluoromaleic anhydride, alkyl polyoxyethylene polyoxypropylene alcohol and sodium isethionate. According to the permeability-enhancing surfactant for shale gas fracturing, fluorine atoms in aliphatic fluoride enable the permeability-enhancing surfactant to have very good low surface tension and wettability, and meanwhile, epoxy groups are introduced into gemini surfactant molecules, so that the wetting effect can be improved, and the permeability-enhancing surfactant is environmentally friendly. Therefore, aiming at the characteristics of a shale reservoir, from the aspects of excellent surface performance, cost reduction, environmental friendliness and the like, the permeability-enhancing surfactant for shale gas fracturing, provided by the invention, has a relatively good practical application value.

The application provides a method for post-processing of a photosensitive resin component, and belongs to the technical field of photosensitive resin, and comprises the following steps: immersing the photosensitive resin component into a solution to obtain an intermediate; and sequentially performing atomization treatment and solidification on the intermediate to complete the post-processing. The photosensitive resin component is placed in an atomized environment for photocuring, the surface properties of the component are improved, the adhesion of the model surface is reduced to a certain extent, the surface color of the original component is changed, the surface smoothness is increased, the surface quality of the component after solidification is improved, the surface protection effect of the component is achieved, and the service life of the photosensitive resin component is prolonged.

The invention discloses a cavitation shot peening surface strengthening method and system based on cooperation of high hydrostatic pressure and spherical focused ultrasound. The method comprises the following steps: establishing and maintaining a hydrostatic pressure environment higher than 0.1 MPa in a high-pressure processing cavity filled with a degassing liquid medium; the to-be-machined surface of the workpiece is positioned in a sound field focal region of the spherical focused ultrasound transducer; and in the high hydrostatic pressure environment, a transducer is driven to work so as to generate a cavitation bubble group in a space confinement range in a focal region of the transducer, and meanwhile, the workpiece is controlled to move according to a preset path, so that cavitation collapse impact acts on a target region on the surface of the workpiece. The device comprises a high-pressure processing cavity, a spherical focused ultrasonic transducer, a multi-degree-of-freedom movement mechanism and a control system. Through cooperation of high hydrostatic pressure constraint and the spherical focusing sound field, precise localization and energy strengthening of the cavitation effect are achieved, a plastic deformation layer can be efficiently and controllably introduced to the surface of a metal material, the surface hardness can be remarkably improved, a residual compressive stress layer is formed, surface layer grains are refined, and the method is suitable for precise surface strengthening of complex components.

The application discloses a kind of solid electrolyte material and its preparation method, positive pole piece, solid electrolyte film and full solid battery, it is related to solid battery field;Method comprises: lithium lanthanum zirconium oxygen base solid electrolyte is dispersed in first solvent, and electrolyte dispersion liquid is made;Acidic pH regulator is added to the electrolyte dispersion liquid, and the pH of the electrolyte dispersion liquid is adjusted to 7~8, and neutral dispersion liquid is obtained;Orthosilicate is added to the neutral dispersion liquid and mixed to obtain dispersion solution;During mixing process, polysiloxane is formed by the reaction of orthosilicate, and polysiloxane is coated on the surface of lithium lanthanum zirconium oxygen base solid electrolyte;The dispersion solution is subjected to electrolyte separation and drying treatment to obtain a solid electrolyte material.The application aims to improve the surface properties of lithium lanthanum zirconium oxygen base solid electrolyte, so that it can build good interface contact with other inorganic materials.

The invention relates to the field of composite soft plastic packaging, in particular to a dynamic self-repairing type high-toughness bio-based degradable film and a preparation method and application thereof. The film is composed of a lactic acid high polymer, a copolymer of butylene adipate and butylene terephthalate, a compatibilizer, a nucleating agent, a catalyst, an auxiliary agent and an antibacterial agent, the catalyst is formed by mixing a main catalyst and a co-catalyst, the main catalyst comprises any one of zinc acetylacetonate, ferric acetylacetonate, antimony trioxide and zinc oxide, and the co-catalyst comprises any one of zinc acetylacetonate, ferric acetylacetonate, antimony trioxide and zinc oxide. The cocatalyst is selected from any one of triethylamine, triphenylphosphine and aluminum acetylacetonate. The invention provides an effective scheme for solving the core contradiction that the strength, toughness, repairability and controllable degradability of a bio-based material are difficult to consider at the same time, is expected to replace traditional plastics in the fields of high-end environment-friendly packaging, intelligent agricultural mulching films and the like, and has great environmental benefits and industrialization prospects.

The utility model discloses a kind of scratch-resistant electromagnetic shielding film, it is related to electromagnetic shielding film technical field, including the substrate support layer with the thickness of 50-100 μm, the top of the substrate support layer is provided with conductive adhesive layer, the top of the conductive adhesive layer is provided with electromagnetic shielding layer, the top of the electromagnetic shielding layer is provided with elastic buffer transition layer, the top of the elastic buffer transition layer is provided with composite reinforcing layer, the top of the composite reinforcing layer is provided with wear-resistant protective layer, the top of the wear-resistant protective layer is provided with anti-fingerprint layer.The utility model realizes the overall optimization of surface performance while guaranteeing electromagnetic shielding performance by the synergistic effect of wear-resistant protective layer and anti-fingerprint layer, wear-resistant protective layer can directly resist scratch, rubbing and other mechanical damage in daily use, and the polytetrafluoroethylene micro powder of self-lubricating layer reduces the risk of scratch when external force acts by reducing surface friction coefficient, and the two form high-efficiency scratch-resistant protective system.

This invention discloses a dielectric ceramic substrate material with a negative capacitance temperature coefficient, its preparation method, and its application, relating to the field of functional ceramics technology. It comprises, by mass percentage, 76wt%~93.5wt% CaTiO. 3 2wt%~15.5wt% SrTiO 3 1wt%~8.5wt% MgTiO 3 The ceramic substrate material contains 1.5wt%~3.2wt% modifier and 2wt%~4.5wt% cooling agent. It possesses excellent flexural strength, good surface roughness, and bonding strength, making it suitable for fabricating miniaturized chip-type microwave monolayer ceramic capacitors with low dielectric loss. It exhibits a negative temperature coefficient of capacitance (-(1500±500)ppm / ℃, (-55~125)℃), which can compensate for capacitance drift caused by temperature changes and prevent signal distortion. Furthermore, it is flat, non-deformable, and has good rectangularity, exhibiting excellent surface properties.

This invention relates to a method for preparing electronic-grade hydrofluoric acid. The invention utilizes a microchannel reactor for the fluorine oxidation reaction, significantly reducing fluorine consumption and safety hazards during production. Furthermore, the microchannel reactor enhances the gas-liquid two-phase mass transfer during the oxidation reaction, further improving impurity removal and product quality. The addition of multi-effect distillation to the distillation process not only enables secondary heat utilization but also saves on the use of high-temperature heating media at the bottom of the column, effectively reducing energy consumption. In the modified liquid, DMF serves as the solvent, cobalt nitrate provides cobalt ions, and vinylguanidine provides guanidine functional groups and amino groups. Ammonia and propanethiol are used as plasma gases to introduce amino and thiol groups onto the membrane surface. These groups help improve membrane selectivity, effectively separating metal and non-metal ions, as well as acidic impurities in the raw materials.

The invention relates to a magnesium-based hydrogen storage material and a preparation method thereof, and belongs to the technical field of hydrogen storage alloy materials and preparation thereof. The hydrogen storage material is an Mg-5Ni alloy with Sm powder uniformly distributed on the surface layer and an amorphous / nanocrystalline structure in the interior. The Sm powder is wrapped by the surface layer of the Mg-5Ni alloy to form composite powder of a core-shell structure; the hydrogen storage material is prepared from Mg-5Ni alloy powder and Sm powder as raw materials, and the raw materials are mixed and then subjected to dry ball milling. The hydrogen absorption and desorption kinetics of the existing magnesium-based hydrogen storage material can be effectively improved, the hydrogen desorption activation energy of the magnesium-based hydrogen storage material is reduced, and the problem that a solid additive is difficult to uniformly distribute on the surface is solved.

Provided is a polishing slurry with which it is possible to more efficiently obtain a polishing surface having good surface characteristics at a high polishing speed even for an object to be polished having relatively low mechanical strength. A polishing slurry which contains alpha alumina as polishing particles in an aqueous medium, the alpha alumina having an average particle diameter (D50) of 80-120 nm at 50% of a volume-based integrated value in a particle size distribution obtained by a laser diffraction scattering method, a specific surface area (BET) of 20 m / g or more as measured in accordance with Japan Industrial Specification JISZ8830 (2013), and a ratio (BET / D50) of the specific surface area (BET) to the average particle diameter (D50) of 1.5 m / g * 10 <-4 > or more.

This invention discloses a fungal encapsulation agent for *Ischemicula elais* and its application in the control of pine wilt disease, belonging to the field of microbial control technology. This invention uses *Ischemicula elais* as the functional microorganism, combined with carrier materials, additives, and active ingredients to prepare a solid microbial encapsulation agent. The shelf life of *Ischemicula elais* spores at room temperature is extended from 2-3 days for traditional spore solutions to over 3-6 months, and up to 12 months under 4°C refrigeration, solving the problem of inconvenient low-temperature storage in mountainous areas. The microencapsulation components form a slow-release protective layer, preventing activity loss caused by environmental factors such as high temperature and drought.

The application relates to the technical field of membranes, in particular to an antibacterial nanofiltration membrane and a preparation method thereof. The method comprises the following steps: polyethylene imine / tannic acid pretreatment is carried out on a polyethersulfone sulfone ultrafiltration membrane substrate; first interfacial polymerization of a water phase containing piperazine, guanidino butylamine sulfate and taurine and an organic phase containing trimesoyl chloride is sequentially carried out; secondary water phase back immersion is carried out by using a taurine solution; a cross-linking anchoring agent with 20%-22% maleimide double bonds is prepared; the cross-linking anchoring agent is used for anchoring-densification treatment together with trimesoyl chloride; and finally, acid / alkali alternation and heat curing are carried out. Through unique step design and function component synergy, a stable antibacterial and anti-pollution structure is constructed in the separation layer, and the problems of easy biological pollution and easy loss of antibacterial agents of traditional nanofiltration membranes are solved. The obtained membrane has long-acting antibacterial property, high flux recovery rate, high ion selectivity and excellent acid / alkali cycle stability.

The invention provides a copper-chromium alloy preparation method and a copper-chromium alloy printing piece, and the copper-chromium alloy preparation method comprises the following steps: mechanically mixing copper powder and chromium powder to form mixed powder, and baking the mixed powder; the mixed powder is laid, a powder layer is formed, the powder layer comprises an outline area part and a filling area part, and the outline area part is arranged around the edge of the filling area part; first laser is used for scanning the filling area part, second laser is used for scanning the contour area part, and a printing layer is obtained; and the powder laying operation and the scanning operation are repeated until the multiple printing layers are stacked to form the copper-chromium alloy printing piece.

The invention relates to the technical field of conjugated microporous polymer materials, and discloses a covalent triazine unit-based conjugated microporous polymer membrane with negative charges and a preparation method thereof. The method comprises the following steps: firstly, preparing a negatively charged cyanophenyl monomer through nucleophilic substitution reaction of a cyanophenyl-containing compound and 1, 4-butane sultone, then taking the monomer and biphenyl nitrile as comonomers, and carrying out step-by-step polymerization, heating film formation, shock cooling shaping and dual-solvent soaking post-treatment under the catalysis of trifluoromethanesulfonic acid to obtain the cyanophenyl-containing polymer film. And finally obtaining the covalent triazine unit-based conjugated microporous polymer membrane with negative charges. The preparation process is high in controllability, and the obtained film has high stability of a covalent triazine structure and the porous characteristic and negative charge function of conjugated micropores, and has wide application prospects in the fields of gas separation and the like through verification.

The invention discloses a design and preparation method of a multi-layer polyurethane composite product, and belongs to the field of high polymer materials. Aiming at the problems that elasticity, strength and rapid prototyping are difficult to balance and interlayer bonding is weak in the traditional polyurethane gel, the preparation method disclosed by the invention is realized through full-chain innovation and comprises the following steps: firstly, synthesizing a polyhydric alcohol monomer with high primary hydroxyl group content; soft inner gel prepolymers A and B and hard outer gel prepolymers C and D are further prepared, a light curing mechanism is introduced into the prepolymer D, and chemical-light dual curing is achieved; a combined pouring process is adopted, specifically, a polyurethane outer film is subjected to vacuum adsorption shaping, an inner gel layer is poured for preliminary curing, then an outer gel layer is poured, rapid shaping is conducted through ultraviolet radiation, and finally overall stepped curing is conducted. The product has a three-layer structure, the layers are firmly combined through chemical bonding, the hardness is low, the rebound rate is high, the permanent deformation is small, the pressure dispersion efficiency is excellent, the forming period is short, and the product is suitable for the fields of high-end medical care, ergonomic support and the like.

The application provides a modification method of nitrocellulose membrane and application thereof in preparation of microRNA nucleic acid test strips, and relates to the technical field of nucleic acid lateral chromatographic detection.The application provides a modification method of nitrocellulose membrane, which comprises the following steps: treating the nitrocellulose membrane under plasma conditions; the power of the plasma treatment is 25-80 W; the pressure of the plasma treatment is 35-70 Pa; and the time of the plasma treatment is 70-350 s.The modification method of the nitrocellulose membrane can effectively improve the surface performance of the nitrocellulose (NC) membrane, significantly enhance the surface wettability of the nitrocellulose membrane, make the nitrocellulose membrane have strong hydrophilicity, improve the loading capacity of probes, and enhance the stability of probe fixation, so that the cost is reduced and the sensitivity and specificity of the microRNA nucleic acid test strip are improved.

This invention discloses a manufacturing equipment and method for hot roughing universal joints used in metallurgical steel rolling. The equipment includes a worktable with four support legs at its bottom and a central control system at its top. It also includes a speed-changing support mechanism mounted on the top of the worktable, with two fixing mechanisms on the mechanism. The two fixing mechanisms respectively fix the universal joint and a flange. This supports the universal joint and the flange, enabling synchronous rotation and position adjustment, providing stable support for subsequent welding, straightening, and other processes. This device significantly improves welding quality by refining grains and dispersing impurities through multi-field coupling; avoiding surface damage through non-contact creep straightening; achieving micron-level straightening through ultrasonic rolling; forming a deep residual compressive stress layer to improve fatigue resistance; reducing human error through automated closed-loop control; adapting to various workpiece specifications; and significantly improving efficiency and reducing costs through integrated processing.

The application discloses a kind of perennial wild peanuts as grass fire dragon fruit cultivation method, S1.selects ground, ground and ridge;S2.punching post, planting pitaya seedling;S3.transplanting wild peanuts: wild peanuts branch according to travel distance 20~25cm, plant distance 15~20cm in the strip ditch of pitaya garden;S4.water and fertilizer management;S5.mowing: when wild peanuts flower basically withers, leaf color presents old green as a whole, that is, the aboveground part of wild peanuts is mowed with mower and directly returned to field, underground part rhizome is retained and respectively in March, June, September and November every year, a total of 4 times mowing.The application adopts perennial rhizome area group wild peanuts A.glabrata (PI262801) intercropping cultivation pitaya, and the pitaya garden benefits for many years after grafting planting once, can inhibit weed growth, compared with other green manure, wild peanuts have good effect on deep soil improvement, and the effect is remarkable.

This invention provides an aqueous coating composition capable of forming a fluoropolymer coating layer with excellent electrical and surface properties and good adhesion. The coating composition contains two or more fluoropolymers, characterized in that at least one fluoropolymer has a functional group number relative to the number of functional groups per 10... 6 The coating composition contains a fluoropolymer (I) with a main chain of 30 to 1000 carbon atoms, and also contains inorganic fillers, surfactants and liquid media.

This invention relates to the field of health food, specifically to a solid beverage for assisting in lowering blood pressure and blood lipids and its preparation method, comprising: 40-45% traditional Chinese medicine extracts, 50-55% food ingredients, and the remainder being excipients; 10-15 parts red yeast rice extract, 5-10 parts hawthorn extract, 5-10 parts gastrodia elata extract, 5-10 parts salvia miltiorrhiza extract, 1-5 parts alisma plantago-aquatica water extract, and 1-5 parts poria cocos water extract; 15-20 parts oat β-glucan powder, 10-15 parts resistant dextrin, 5-10 parts phytosterol micronized powder, and 5-10 parts freeze-dried fruit powder. This solid beverage combines extracts of medicinal and edible herbs such as red yeast rice, salvia miltiorrhiza, and hawthorn with food ingredients, without the addition of chemically synthesized drugs, avoiding the risks of drug interactions and potential side effects, conforming to the principle of food and medicine sharing the same origin, and thus having higher consumer acceptance and compliance.

The application discloses a kind of process recovery device and method of waste nickel-plated tungsten wire cutting line, and the process recovery method includes: under the condition of continuously filling inert gas, waste nickel-plated tungsten wire diamond cutting line is heated to 1600-2000 DEG C, nickel layer is melted, and then gas jet atomization solidification is formed into nickel powder, and then spherical nickel particles are obtained by heterogenous drum wet grinding process.The tungsten wire separated is subjected to second heat treatment, and recycled tungsten wire is obtained, and the second heat treatment includes: the separated tungsten wire is heated to 600-1000 DEG C and kept for 2h, and then cooled to 200 DEG C and kept for 2h.The application can realize simple, efficient and low-cost recovery of waste nickel-plated tungsten wire diamond cutting line.

The present application relates to the technical field of castable preparation, in particular to a preparation process of wear-resistant and alkali-resistant castable, comprising: S1, batching, S2, mixing and forming, S3, adding auxiliary material treatment, S4, heat treatment of main material; the method significantly improves the wear resistance of the material through the high hardness of the electric smelting corundum particles and the reinforcing effect of the coating; through the synergistic effect of the alkali resistance of mullite sheet and the coating, the ability to resist alkali corrosion is enhanced, especially the protective effect of the surface layer; through multiple steps such as dry mixing, wet mixing and vibration forming, the uniform dispersion of raw materials and the compactness of castable are ensured, the internal pores are reduced, and the structural stability and thermal shock resistance of the material are improved; through the above process, the castable also improves the crack resistance and structural stability while maintaining good wear resistance and alkali resistance.

A method for machining a self-aligning ball bearing cage is disclosed, relating to the field of self-aligning bearing machining. Existing self-aligning bearing cages use ordinary drilling machines to machine the pockets, resulting in poor consistency and stability in the machining dimensions and accuracy of the pockets, and a low yield rate. The improved process of this invention involves using a CNC twin-spindle machine for the first machining step. The machining method involves the main spindle of the CNC twin-spindle machine clamping the outer diameter of the annular material and performing the first machining step, namely, fine turning of the first plane, drilling, fine turning of the inner diameter, fine turning of the outer diameter, and turning of the inner and outer chamfers. Then, the auxiliary spindle clamps the outer diameter of the cage and performs cutting, fine turning of the cut surface (which is the second plane), and turning of the inner and outer chamfers. The second step is machining the pockets. Only two main machining steps are needed to complete the entire machining process of the cage. This machining method shortens the machining cycle and improves machining efficiency. This invention is applied in the field of bearing machining.

The invention provides a platinum-bismuth alloy catalyst, a preparation method thereof and a direct methanol fuel cell, and belongs to the technical field of electrochemical catalysts. The method comprises the following steps: mixing carbon black with an acidic aqueous solution, and sequentially carrying out acidizing treatment and roasting treatment to obtain pretreated carbon black; mixing the pretreated carbon black, Bi2O2CO3, a platinum source, a precipitant, a pH regulator, a first dispersing agent and first water, and performing replacement reaction to obtain a suspension; mixing a reducing agent, a second dispersing agent and second water to obtain a mixed solution; dropwise adding the suspension into the mixed solution for reduction reaction to obtain a catalyst precursor; and calcining the catalyst precursor under first protective gas to obtain the platinum-bismuth alloy catalyst. The prepared platinum-bismuth alloy catalyst has excellent electro-catalytic performance, shows relatively high catalytic activity and cycling stability, and can be applied to oxygen reduction reaction of a cathode of a direct methanol fuel cell.

The invention discloses a method for preparing MXene through fluoride-free alkali etching of an ultrasonic-assisted supercritical fluid technology, and relates to the field of MXene preparation.Fluorine-free green preparation of MXene is achieved through cooperation of supercritical carbon dioxide fluid and a high-frequency power ultrasonic technology and a fluoride-free etching agent. The preparation method comprises the following steps: introducing carbon dioxide to reach a supercritical state, carrying out an etching reaction in the supercritical state by adopting a stirring or fluid circulation mode, applying continuous or discontinuous high-frequency power ultrasonic treatment to the whole reaction system, recovering to normal pressure and normal temperature after the reaction is finished, collecting a product, washing and drying, thereby obtaining the high-purity silicon dioxide. The high-frequency vibration of the ultrasonic waves and the high diffusivity of the supercritical carbon dioxide are utilized to promote the etching agent to remove A-layer elements in the MAX phase, so that the use of a fluorine-containing etching agent is avoided, the environmental pollution is reduced, and the etching efficiency of the MAX phase is also remarkably improved.

The invention discloses a TiO2-loaded manganese-cerium oxide catalyst as well as a preparation method and application thereof, and aims to solve the technical problem that the oxidation efficiency of a manganese-cerium-based catalyst is not ideal at low temperature in the prior art. According to the catalyst, ammonium sulfate modified TiO2 is used as a matrix, and manganese cerium oxide with the load content of 0.1%-20% is used as an active component. The preparation method comprises the following steps: preparing an ammonium sulfate modified TiO2 carrier, mixing a manganese-cerium precursor solution with the carrier, treating, and loading the active component. According to the scheme, the low-temperature catalytic oxidation performance is improved by enhancing the acidity of the carrier and the synergistic effect of the active components.

This invention belongs to the field of inorganic filler modification technology, specifically relating to a method for preparing modified microcrystalline graphite / natural rubber composite materials. A eutectic solvent is prepared by combining hexadecyltrimethylammonium bromide (hydrogen bond acceptor) with glycerol and lactic acid (hydrogen bond donors). Coupling agent KH550 is used to synergistically modify the eutectic solvent to modify the microcrystalline graphite. Compared with the unmodified microcrystalline graphite system, the mechanical properties and wear resistance of the composite material obtained by the modified microcrystalline graphite are significantly improved: when using 1 phr LADES and 3 phr KH550 for synergistic modification, the tensile strength of the vulcanizate is increased by 51.5% and the DIN wear volume is reduced by 46.5% compared to the MG group; when using 1.5 phr GLDES and 3 phr KH550 for synergistic modification, the tensile strength of the vulcanizate is increased by 46.2% and the DIN wear volume is reduced by 52.4%; under the wet preparation route, 1 phr LADES and 3 phr Synergistic modification with KH550 can increase the 300% constant tensile stress by 81% and achieve the lowest rolling resistance, indicating that the composite material has the potential to both reinforce and reduce rolling resistance.

The invention relates to the technical field of alloy pole plates, in particular to an aluminum-magnesium-silicon alloy pole plate with multiple layers of carbon-based coatings and a preparation method thereof.The aluminum-magnesium-silicon alloy pole plate with the multiple layers of carbon-based coatings comprises an aluminum-magnesium-silicon alloy base material layer, and the multiple layers of carbon-based coatings are connected to the surface of the aluminum-magnesium-silicon alloy base material layer; the multi-layer carbon-based coating comprises a CrN layer, a CrNC layer, a CrC layer and an amorphous carbon coating doped with metal atoms and nitrogen atoms which are sequentially arranged in a stacked mode, and the CrN layer is located on the side close to the aluminum-magnesium-silicon alloy base material layer. The bonding force between the multi-layer carbon-based coating and the Al-Mg-Si alloy base material layer of the aluminum-magnesium-silicon alloy pole plate with the multi-layer carbon-based coating is relatively strong, and the aluminum-magnesium-silicon alloy pole plate with the multi-layer carbon-based coating has relatively good conductivity and corrosion resistance, so that the problem that the bonding force, the corrosion resistance and the interface conductivity between the existing coating and the Al-Mg-Si alloy pole plate are difficult to improve at the same time is solved.