6809results about "Special surfaces" patented technology

The invention relates to a self-cleaning nano coating material and a preparation process thereof, and belongs to the technical field of functional coatings. The coating material is prepared from nano silicon dioxide, nano aluminum oxide, graphene nanosheets, nitrogen-doped titanium dioxide, fluorinated silane, polyurethane, polydimethylsiloxane, a microcapsule repairing system, ethanol and deionized water according to a specific proportion through a multi-layer composite structure. The preparation process comprises the steps of base material surface pretreatment, reinforced particle surface modification, base material dissolution, functional additive introduction and multi-layer coating preparation. Through bottom layer enhancement, middle layer flexible buffering and surface layer functional design, excellent mechanical strength, wide-spectrum photocatalytic performance, self-repairing capacity and environmental adaptability are achieved. The problems that in the prior art, a self-cleaning coating is insufficient in mechanical performance, low in photocatalytic efficiency, lack of a self-repairing function and poor in weather resistance are solved, the service life of the coating is remarkably prolonged, and the functional stability of the coating is remarkably improved.

The present invention relates to a panel, in particular a floor panel or wall panel, comprising a core layer comprising a mineral filler, a polymeric binder, and optionally a plasticizer; and a coating layer located on a bottom surface of the core layer. The invention further relates to a composition for forming a coating layer. The invention further relates to a method of manufacturing a panel, comprising providing a core layer comprising at least one mineral filler and at least one polymeric binder, applying a composition to at least part of a bottom surface of the core layer, and at least partially crosslinking the composition to obtain a coating layer.

The invention discloses a preparation method of a wear-regenerated super-hydrophobic durable anti-corrosion coating. The preparation method comprises the following steps: constructing a mechanical-sturdy super-hydrophobic coating with body phase consistency through reverse filling of a self-similar structure; wherein the oily binder solution is subjected to phase separation under the action of an alcohol solvent, is mixed with the fluorinated nanoparticles and is sprayed on the surface of a metal matrix to construct a self-similar super-hydrophobic coating, and a uniform dispersion liquid of the low-surface-energy nanoparticles and the high-hardness oily binder is sprayed on the surface of the self-similar super-hydrophobic coating; particularly, the self-similar structure of the super-hydrophobic coating can be effectively filled with the high-hardness oily binder due to the good oil absorbency of the oily binder, and finally the wear-regeneration durable super-hydrophobic anti-corrosion coating is formed; the wear regeneration durable super-hydrophobic anti-corrosion coating prepared by the method not only has excellent super-hydrophobicity, mechanical stability, chemical stability and anti-corrosion performance, but also has the advantages of special mechanical wear regeneration super-hydrophobicity and the like.

The invention relates to the technical field of laser welding, and discloses a laser machining device and method for a nuclear reactor shell, and the method comprises the steps that a shell plate welding area to be welded is subjected to surface modification pretreatment; the laser processing device is used for carrying out initial welding on the pretreated shell plate, in the initial welding process, the temperature sensing assembly is used for monitoring temperature distribution of the welding area in real time, and temperature information of the welding area is obtained; the temperature information is input into a preset temperature-deformation prediction model for prediction of a variable trend and a stress distribution condition so as to obtain a first prediction result; based on the obtained first prediction result, the welding parameters of the laser processing device are dynamically adjusted for the first time; welding deformation and stress concentration are effectively coped with, the welding quality and structural strength of the nuclear reactor shell after laser welding are improved, and the reliability and safety of the nuclear reactor shell during use are effectively improved.

The invention relates to the technical field of metal surface protection, and discloses a corrosion-resistant self-repairing metal fastener and a preparation method thereof.The corrosion-resistant self-repairing metal fastener comprises a zinc alloy matrix, a nanometer passivation layer, a slow-release corrosion-resistant layer and a self-repairing functional layer, and the nanometer passivation layer, the slow-release corrosion-resistant layer and the self-repairing functional layer sequentially wrap the zinc alloy matrix; the zinc alloy matrix consists of Al, Cu, Mg, Ce and Zn; the nano passivation layer adopts zinc phosphate / silane composite sol to construct a Si-O-P covalent bond network, and plasma is combined to graft epoxy groups to enhance the interface bonding strength; the slow-release anti-corrosion layer is used for loading a pH response type benzotriazole derivative through gradient aperture mesoporous silica, so that the dynamic controlled release of a corrosion inhibitor is realized; the self-repairing functional layer adopts a synergistic effect of a mechanical triggering type sulfydryl siloxane microcapsule and a pH triggering type EDTA chelating agent microcapsule to form a physical plugging-chemical passivation dual-mode repairing mechanism. Through four-stage cooperation of matrix modification, interface strengthening, slow-release regulation and control and intelligent repair, the corrosion resistance of the corrosion-resistant self-repairing metal fastener in a complex environment is remarkably enhanced.

The invention discloses a preparation method of a flexible material with double functions of radiation refrigeration and photothermal conversion storage, and relates to the field of composite phase change materials. The preparation method comprises the following steps: 1) preparing the flexible phase change material matrix by utilizing n-octadecane, SEBS and POE through hot pressing; 2) preparing a BaSO4 solution by using absolute ethyl alcohol, deionized water, a water-based defoaming agent, a water-based dispersing agent and an acrylic resin emulsion; (3) preparing an MXene solution; and 4) spraying the BaSO4 solution on the surface of one side of the flexible composite phase change material matrix by using a spray gun, and spraying the MXene solution on the surface of the other side of the flexible composite phase change material matrix to obtain the flexible composite phase change material. The radiation refrigeration layer can strongly reflect visible light and near-infrared light, has high emissivity in an infrared light area, especially in an atmospheric window wave band, reduces absorbed atmospheric heat radiation, reduces urban heat island effect caused by dense building groups in cities, and can effectively solve the problems of large day and night temperature difference and heat supply and demand in summer and winter.

The invention discloses a heat insulation aluminum profile and a preparation method thereof, and belongs to the technical field of aluminum profile preparation. The heat insulation coating is electrostatically sprayed on the surface of the aluminum profile, the coating takes epoxy resin as a matrix, the aluminum profile is separated from the external environment, and the corrosion resistance and the heat insulation performance of the aluminum profile are improved; compared with common nano ATO, the prepared modified nano ATO has better compatibility with an epoxy resin matrix, the agglomeration phenomenon is obviously reduced, and the heat insulation performance of the coating can be greatly enhanced; the prepared modifier can significantly enhance the flame retardance and heat resistance of the coating, can promote curing of epoxy resin, is grafted on nano ATO, and is stable in performance and not prone to falling off; therefore, the prepared aluminum profile is excellent in heat insulation property and corrosion resistance, the coating sprayed on the surface of the aluminum profile has stable and efficient flame retardance and heat resistance, and the aluminum profile has important application value in the technical field of aluminum profile preparation.

According to the plastic surface deep scene vacuum plating manufacturing process, UV primer is sprayed to the back face of a plastic product, and a mirror surface primer layer is formed; the mirror surface primer layer is placed in vacuum electroplating equipment, vacuumizing is conducted till the vacuum degree is 5 * 10 <-3 > Pa or below, 99.99% of high-purity aluminum materials are subjected to vacuum evaporation, and a mirror surface electroplated aluminum layer is obtained; engraving a required pattern on the mirror surface electroplated aluminum layer by adopting laser engraving equipment; spraying UV finish paint on the surface of the carved pattern to form a protective layer; spraying the UV finish paint on the front surface of the plastic product to form a mirror paint layer on the front surface; placing the front mirror surface paint layer in vacuum electroplating equipment, vacuumizing to below 5 * 10 <-3 > Pa, and carrying out vacuum evaporation on 99.99% high-purity indium material or zinc sulfide to obtain a semi-permeable mirror surface electroplated layer; the electroplated layers on the front and back surfaces mutually reflect to form a deep scene (multi-layer scene) effect; the pattern has a three-dimensional and multi-layer visual effect when viewed from the front side, UV gloss oil is sprayed on the surface of the semi-permeable mirror surface electroplated layer, and the formed surface protective layer is excellent in wear resistance; and the attractiveness and durability of the product are obviously enhanced.

The invention discloses a gas-insulated switchgear gas leakage repairing method, system, equipment and medium, and relates to the field of equipment repairing. The method comprises the following steps: scanning the gas insulated switchgear to position a gas leakage part, and preprocessing the gas leakage part; determining a scheme for blending a target interpenetrating network coating material according to the characteristics of the air leakage part and the working environment, and coating the pretreated air leakage part with the blended target interpenetrating network coating material to form a target coating; curing parameters are determined according to the type and thickness of the interpenetrating network coating material and the working environment, the power of a heating source is determined through the curing parameters, the target coating is cured through the heating source based on the power of the heating source, and the curing parameters comprise curing time, temperature, humidity and air pressure; and performing air leakage detection on the cured air leakage part to evaluate the repair effect. By implementing the technical scheme provided by the invention, the air leakage problem can be effectively and durably repaired.

The invention discloses a bionic TENG sensor unit for an artificial throat and a preparation method thereof, and relates to the field of artificial throats, and the sensor unit comprises a gradient micro-dome friction layer, a strain amplification layer, an electrode layer and a back cavity substrate layer. The gradient micro-dome array realizes gradual contact through gradient change of height and diameter; the strain amplification layer converts vertical vibration into horizontal strain by using a cantilever beam-sliding block structure; the back cavity array selectively amplifies vibration at a specific frequency based on the Helmholtz resonance principle. The invention further provides a corresponding preparation method. The preparation method comprises the steps of back cavity forming, electrode deposition, microstructure manufacturing, surface treatment and the like. The sensor has the advantages of high sensitivity, good frequency selectivity and strong durability, and is particularly suitable for detecting weak laryngeal vibration signals of laryngeal patients.

The utility model relates to the technical field of paint, in particular to a power transmission line anti-icing paint coating device which comprises a device frame, a raw material roller of a power transmission line and a product roller of the power transmission line are installed on the device frame, and the raw material roller is used for winding the power transmission line without a coating. The product roller is a roller which is wound to form a coating power transmission line, the power transmission line forms a coating route from the raw material roller to the product roller, the coating route from the raw material roller to the product roller is from back to front, and a rear low-temperature chamber and a front spraying chamber are mounted on the device frame. The low-temperature chamber is provided with a low-temperature chamber inlet and a low-temperature chamber outlet, the spraying chamber is provided with a spraying chamber inlet and a spraying chamber outlet, the coating route penetrates through the low-temperature chamber and the spraying chamber, and the low-temperature chamber is provided with a temperature adjusting component which is a first temperature adjusting component.

The invention discloses a super-wear-resistant super-hydrophobic coating in the technical field of coatings, the super-wear-resistant super-hydrophobic coating comprises a primer and a finishing coat, the primer comprises solvent-free aliphatic polyether polyol resin, micro-powder particles, di-tetratoluene diisocynate, fumed silica nanoparticles and a primer magnetic attraction material; the finishing paint comprises hydrophobic nanoparticles, a diluent, a finishing paint magnetic attraction material and a hydrophobic treatment agent, the primer magnetic attraction material is ferrite powder, and the finishing paint magnetic attraction material is nickel powder. The preparation method comprises the following steps: 1, preparing the primer; secondly, primer is sprayed; step 3, roughening the primer; 4, finish paint is manufactured; step 5, spraying finish paint; and step 6, detecting the performance of the coating. The preparation method is scientific and reasonable, the uniformity and stability of the coating in the preparation and coating process are ensured by optimizing the composition of the coating material, improving the preparation process and introducing a magnetic suction device, and therefore the wear resistance, hydrophobicity and adhesive force of the coating are improved.

The invention relates to the technical field of decorative materials, in particular to a decorative material with a 3D texture structure and a preparation method and application of the decorative material. The method comprises the following steps: carrying out digital printing on a pretreated substrate to obtain a 2D pattern layer on the surface of the substrate; coating the surface of the 2D pattern layer with a photocuring coating, carrying out preliminary curing, and then carrying out ink-jet printing of a texture developing solution on the surface subjected to preliminary curing to carry out secondary curing, so as to obtain a cured coating; the cured coating comprises a hardened part and an unhardened part; and after an unhardened part in the cured coating is removed through polishing and wire drawing, a surface coating is coated, and the decorative material with the 3D texture structure is obtained. The textures with different widths and depths can be obtained in a manner of combining primary curing of the coating with ultraviolet absorption of the developing solution, and then a microcosmic coarse and visual smooth form is obtained through polishing and wire drawing treatment, so that the obtained 3D texture structure is closer to natural textures.

The invention discloses a preparation method of a high-adhesion composite coating for a metal product, and relates to the technical field of metal surface treatment. According to the coating, polyurethane resin is adopted as a matrix, and a curing agent, an elastomer modifier, a lubricant and an adhesion promoter are added, so that the adhesion, toughness and impact resistance of the coating are improved. The coating is formed through spraying and curing processes, has excellent wear resistance and adhesive force, and is suitable for surface treatment of various metal products. The preparation method is simple and easy to implement, low in cost and suitable for industrial production.

The invention discloses a high-adhesion super-hydrophobic protective coating process method and a coating. The high-adhesion super-hydrophobic protective coating process method comprises the following steps: S1, preparing magnetic nano iron oxide particles; s2, performing neodymium modification on the magnetic nano iron oxide particles to obtain ferromagnetic neodymium modified iron oxide; s3, preparing and spraying a neodymium modified iron oxide coating; s4, preparing and coating a negative charge modified polymer microsphere coating; s5, preparing and spraying a positive charge modified polymer microsphere coating; and S6, preparing and spraying a modified nano silicon dioxide super-hydrophobic coating. According to the method, neodymium-modified magnetic nanometer iron oxide serves as a first layer of the surface of a steel substrate and is sprayed and dried in a magnetic field, it is guaranteed that the neodymium-modified magnetic nanometer iron oxide is tightly adsorbed to the steel surface, a magnetic transition layer is formed, and then coatings with different charges are alternately coated through the electrostatic attraction effect; and finally, a high-adhesive-force super-hydrophobic coating is formed on the steel surface in a layer-by-layer self-assembly mode, and the problem that the adhesive force of the super-hydrophobic coating is poor is obviously solved.

The invention provides a PDMS-based double-layer hydrophobic anti-reflection self-cleaning coating and a preparation method thereof, and relates to the technical field of hydrophobic materials, the preparation method comprises the following steps: adding polydimethylsiloxane (PDMS) and a PDMS curing agent into n-hexane, uniformly mixing to obtain PDMS sol, and dip-coating the PDMS sol on a hydroxylated substrate as a connecting layer; pDMS, a PDMS curing agent and dibutyltin dilaurate (DBTDL) are added into n-hexane, uniform mixing is performed, then tetraethoxysilane (TEOS) / methyltrimethoxysilane (MTMS) / triethoxymethylsilane (MTES) is added, PDMS-SiO2 sol is obtained, then the PDMS connection layer on the substrate is coated with the PDMS-SiO2 sol in a dip mode, and a PDMS-SiO2 hydrophobic layer is obtained; a carbonization template is introduced into a PDMS (Polydimethylsiloxane)-SiO2 hydrophobic layer by using external flame, and then annealing treatment is performed to obtain the PDMS-based double-layer hydrophobic anti-reflection self-cleaning coating, and the coating realizes coexistence of high hydrophobicity, high durability and high light transmittance.

An aerosol-generating device for generating aerosol from an aerosol-generating material including a housing and a heating assembly arranged in the housing for receiving aerosol-generating material, the heating assembly configured to heat aerosol-generating material received in the heating assembly, wherein at least a portion of the housing has a soft touch coating.

The invention provides an intelligent paint make-up system capable of accurately identifying and matching the color of aged vehicle paint and a paint make-up method thereof, and the system comprises a color identification module which is used for extracting the color features of a to-be-repaired paint surface, thereby identifying the color of the to-be-repaired paint surface, and obtaining an image of the to-be-repaired paint surface; the data processing module is used for performing multi-angle spectral decomposition on the to-be-repaired paint surface image and predicting a paint surface fading curve so as to obtain a matching weight of color adjustment; the automatic paint mixing module comprises a precise proportioning pump unit and a multi-shaft stirring device and is used for mixing pigments according to the proportioning weight of color adjustment; and the closed-loop feedback module comprises a real-time chromatic aberration detection unit and is used for correcting errors of the pigments in real time and finally outputting the refinishing paint consistent with the spectral data of the paint surface to be repaired.

The invention belongs to the technical field of polymer composite materials, and particularly relates to an oil-resistant interior material. The material comprises a porous base material layer, a fluorine-containing polymer and organic silicon resin blended oil-resistant functional layer and a micro-nano structure layer with a periodic micro-bulge array, surface modified nanoparticles are distributed in the functional layer in a gradient manner, and the micro-bulge surface is covered with a perfluoropolyether / fluorinated silicon dioxide composite coating; through a synergistic effect of a low-surface-energy oleophobic interface formed through chemical bonding and curing and a micro-structure capillary lifting effect, anti-permeation barrier of high-viscosity grease is realized, and meanwhile, mechanical wear resistance and thermal stability are improved by virtue of a nano-particle enhanced cross-linked network; and continuous imprinting and an ultraviolet-thermal dual-curing process are combined to achieve high-efficiency manufacturing with zero solvent residue, and finally the interior material with long-acting oil resistance, high environmental tolerance and industrial mass production feasibility is obtained.

The invention discloses a radiation refrigeration coating with high refractive index contrast, and belongs to the technical field of radiation refrigeration coatings. The radiation refrigeration coating with high refractive index contrast comprises the following raw materials: hollow microspheres, a high refractive index pigment, a film-forming substance, a solvent and an auxiliary agent. The coating process of the radiation refrigeration coating film comprises two coating steps: firstly, coating an inner layer coating film on the surface of a base material by using the radiation refrigeration coating with rutile type titanium dioxide as a high-refractive-index pigment as a raw material; and coating the surface of the inner-layer coating film with an outer-layer coating film by using the radiation refrigeration coating with high-refractive-index pigment being zirconium dioxide and / or zirconium silicate as a raw material. According to the invention, a closed and independent bubble structure is introduced into the coating by adopting the hollow microspheres, and the preferable high-refractive-index pigment is matched, so that the refractive index difference value between adjacent components in a coating film is increased, and the sunlight reflectivity of the coating film is remarkably enhanced, thereby realizing excellent radiation refrigeration performance under strong sunlight irradiation.

The invention relates to the technical field of battery connector manufacturing, and discloses a battery connector terminal electroplating method which comprises the following steps: pretreating the surface of a battery connector terminal to remove impurities and oxides; carrying out bottom coating electroplating on the battery connector terminal by adopting nano-metal electroplating liquid to form a compact metal protective film; depositing a functional conductive coating on the underlying coating to optimize an electron flow path; the functional conductive coating is coated with a graphene-based composite material coating so as to enhance the conductivity and the corrosion resistance; and subsequent curing treatment is conducted on the battery connector terminal obtained after coating is completed, the battery connector terminal high in corrosion resistance and excellent in conductivity is obtained, and the method can improve the power transmission stability of the terminal and prolong the service life of the terminal. According to the invention, through a multi-layer coating structure design and an optimized electroplating and curing process, the effects of stable conductivity, strong corrosion resistance and excellent environmental adaptability of the battery connector terminal are realized.

The present invention discloses a reflective heat-insulating multi-color coating, a preparation method and application thereof, and belongs to the technical field of coating preparation. The reflective heat-insulating multi-color coating uses a barrier-type heat-insulating coating as a bottom coating, a reflective heat-insulating coating as a surface multi-color coating, and an organic reflective pigment as a multi-color pigment; the heat-insulating filler in the barrier-type heat-insulating coating is compounded with SiO2 aerogel, hollow ceramic microspheres and hollow glass microspheres in a mass ratio of 1:1.2:0.3; the reflective filler in the reflective heat-insulating coating is an infrared reflective pigment. The reflective heat-insulating multi-color coating can reduce building energy consumption and carbon emissions in a variety of climate zones, and is particularly suitable for temperate continental climate zones and temperate monsoon climate zones, and can reduce about 2‑4 KWh / m per year. 2 Energy consumption and 1‑3kg / m 2 of carbon emissions.

A device for lubricating a surface of a tubular element includes a shaft portion having a longitudinal axis, where the shaft portion is formed from plastic, and a brush portion located on the shaft portion. The brush portion has at least one contact zone for contacting a surface. The brush portion is formed from a brush portion material and a lubricant agent, which is transferred from the at least one contact zone to a surface during use.

An apparatus for lubricating a surface of a tubular element for a medicament delivery device includes a rotatable drum comprising a tubular element receiving section configured to receive a tubular element to be lubricated. The drum is rotatable about its central axis. The apparatus comprises a device manipulator comprising a device handler at one end of a rod. The device handler is configured to receive a shaft portion of a device, and the rod moves a device through a received tubular element. The device manipulator is rotatable about the central axis of the rotatable drum.

A device for lubricating a surface of a tubular element includes a shaft portion having a longitudinal axis, and a brush portion located on the shaft portion. The brush portion comprises at least one radial projection having a helical form. The protrusion comprises at least one contact zone for contacting a surface. An outer diameter of the helical form formed by the at least one contact zone is tapered at both longitudinal ends of the brush portion such that the outer diameter of the helical form is reduced at the longitudinal ends of the brush portion. The brush portion is formed from a brush portion material and a lubricant agent which is transferred from the at least one contact zone to a surface during use.

The invention discloses a high-altitude autonomous paint spraying method based on a multi-rotor unmanned aerial vehicle, and relates to the technical field of high-altitude paint spraying, the multi-rotor unmanned aerial vehicle is provided with a binocular camera and spraying equipment, and the autonomous paint spraying method comprises the following steps: step S1, unmanned aerial vehicle self-inspection; s2, after self-inspection is qualified, preliminary spraying work is conducted according to a set paint spraying task route, obstacles are avoided in the flying process, and image information is collected; s3, the unmanned aerial vehicle flies back to the starting point where paint spraying work starts, the original route is repeated once, machine vision carrying a Yolov5 neural network is added, and paint spraying defects occurring during primary paint spraying work are checked; s4, a spraying coefficient is selected according to the defect type, and the regional paint spraying defect is improved; and S5, the unmanned aerial vehicle autonomously returns along the historical path. According to the high-altitude autonomous paint spraying method based on the multi-rotor unmanned aerial vehicle, the paint spraying effect can be evaluated and fed back in real time, the paint spraying effect is optimized, and the quality and effect of operation completion are guaranteed.

The invention relates to a Janus flexible super fabric capable of dynamically regulating and controlling infrared emissivity as well as a preparation method and application of the Janus flexible super fabric, and belongs to the technical field of high-performance fiber products. In order to solve the problem that the existing fabric capable of dynamically regulating and controlling the infrared emissivity cannot realize stepless wide-range infrared reflectivity dynamic regulation and control, the invention provides a Janus flexible super fabric capable of dynamically regulating and controlling the infrared emissivity, which has a sandwich structure, the hydrophobic nanofiber thin film layer, the low-emissivity coating and the hydrophilic nanofiber thin film layer are sequentially arranged from bottom to top. An anti-gravity unidirectional carrier transfer channel is constructed through surface binding energy difference of hydrophilic-hydrophobic Janus porous fabrics on two sides, a hydrophilic low-emissivity coating with ultralow infrared emissivity and the Janus porous fabrics form a sandwich structure, dielectric constants are adjusted through continuous and reversible change of carrier content, and accordingly, the infrared emission performance of the fabric is improved, and the infrared emission performance of the fabric is improved. Stepless regulation and control of humidity response self-adaptive ultra-wide range infrared emissivity at normal temperature are realized.

A method of lubricating a surface of a tubular element for a medicament delivery device includes the steps of moving a device relative to the tubular element for a medicament delivery device, contacting the tubular element with a brush portion of the device, and depositing lubricant agent on the surface of the tubular element to lubricate a surface of the tubular element.

Provided is an ink jet printing method including: a first step of ejecting an ink containing a water-soluble polymerizable component A and water from a printing head of an ink jet system to apply the ink to a medium M, to thereby form a first image; and a second step of applying an active energy ray to the first image to form a second image. The polymerizable component A is dissolved in the first image, and a moisture concentration “x” (mass %) in the first image and a moisture concentration “y” (mass %) in the second image placed under an environment at a humidity of 95% satisfy a relationship of 0<(y / x)≤0.80.

The invention provides a workpiece surface coating method and system. The system comprises surface detection equipment, control equipment and coating equipment, the surface detection equipment acquires surface coating data of the to-be-detected workpiece coated with the paint and sends the surface coating data to the control equipment; the control equipment determines a supplementary coating parameter aiming at each coating defect existing on the surface of the to-be-detected workpiece according to the surface coating data, generates a supplementary coating control instruction according to the supplementary coating parameter of each coating defect and sends the supplementary coating control instruction to the coating equipment; and the coating equipment performs paint coating on each coating defect existing on the surface of the to-be-detected workpiece according to the supplementary coating control instruction. Therefore, by accurately determining the coating repairing parameter of each coating defect existing on the surface of the workpiece, high-precision detection and accurate paint repairing of the coating defects on the surface of the workpiece are achieved through automatic operation, manual intervention is reduced, the paint repairing efficiency is improved, the paint repairing quality is guaranteed, the production cost is reduced, and the consistency and reliability of the protection performance of the workpiece are guaranteed.