2344results about "Special surfaces" patented technology

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 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 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 vehicle protection materials, and particularly relates to a coating for an explosion-proof vehicle. The coating is composed of an adhesion bottom layer, an energy-absorbing middle layer and an anti-impact outer layer, wherein the adhesion bottom layer contains epoxy resin and flaky zinc powder / mica powder, and a laminated shielding structure is formed to improve the adhesion force to be larger than or equal to 8 MPa; the energy-absorbing middle layer is a composite material of modified nano silicon dioxide / polyethylene glycol-based STF and silanized aramid fiber, the viscosity of the energy-absorbing middle layer is sharply increased by more than 50 times at the strain rate of 500s <-1 >, and 65% of explosion impact energy can be absorbed; the anti-impact outer layer adopts a polyurea elastomer to wrap gradient distribution silicon carbide microspheres, pyramid-shaped protrusions are designed on the surface, the fragment defense speed reaches 430 m / s, and the shock wave reflection dispersion is increased by 50%. The whole anti-explosion coating passes UL94V-0 certification through a synergistic flame-retardant system, the chemical protection and self-cleaning capacity is improved through a super-hydrophobic surface layer, and the problems that a traditional anti-explosion coating is poor in adhesive force, weak in composite threat resistance and insufficient in environmental adaptability are solved.

The invention relates to a self-repairing hydrogen barrier composite coating for a hydrogen storage or transportation device as well as a preparation method and application of the self-repairing hydrogen barrier composite coating, and belongs to the technical field of hydrogen energy storage and transportation materials. The coating is of a double-layer structure and is composed of a bottom coating and a humidity response microcapsule self-repairing barrier layer. The humidity response microcapsule is composed of a capsule core containing a polyurethane prepolymer and a hybrid capsule shell formed by polyurethane and siloxane, and has good hydrogen barrier performance and environmental response characteristics. In a certain humidity environment, the microcapsule is stimulated to release the capsule core material, and in-situ self-repairing is achieved. The problem that a traditional hydrogen-resistant coating is short of repairing capacity is solved, and the hydrogen-resistant coating has a wide application prospect in the aspect of improving the safety of a hydrogen conveying and storage system.

The invention discloses an anti-corrosion self-repairing super-amphiphobic coating film and a preparation method thereof, and belongs to the technical field of polymer coating materials. The coating film sequentially comprises a nano particle skeleton layer, a dynamic borate bond layer and a super-amphiphobic functional layer from inside to outside, and the three-layer gradient design synergistically realizes micro / nano structure stability, self-repairing and super-amphiphobic functions. The framework layer takes SiO2-TiO2 composite nanoparticles as a substrate and provides support; the dynamic boric acid ester bond layer forms a dynamic network through polycondensation of an organic boron compound, endows the self-repairing capability and enhances interface bonding; the super-amphiphobic functional layer is formed by grafting a fluorine-containing organosilicon compound and has hydrophobic and oleophobic properties. A multi-layer structure is constructed step by step, the reaction condition is mild, the operation is simple, the cost is low, the method is suitable for large-scale industrial preparation, the coating film has excellent super-amphiphobic performance and interface adhesion performance, the super-amphiphobic performance of the coating film can still be kept stable in long-term use or a complex environment, and the problem that an existing super-amphiphobic material is prone to damage is effectively solved.

The application discloses a dynamic roller pressing forming device for a gradient-pore diaphragm for a silicon-based negative electrode, comprising a modular coating unit, a multi-shaft roller pressing machine group and a partitioned annealing cavity arranged in sequence, the modular coating unit comprises a slit coating mechanism, a spray coating mechanism and a micro-gravure coating mechanism arranged in sequence, the multi-shaft roller pressing machine group comprises a main pressing roller and a supporting roller matched with the main pressing roller, and a dynamic pressure feedback system is arranged on the main pressing roller; and the application further discloses a method for preparing a gradient-pore high-molecular diaphragm by using the forming device. The device is provided with the main pressing roller of the multi-shaft roller pressing machine group and the partitioned annealing cavity, and the dynamic pressure feedback system is arranged on the main pressing roller, so that the accurate matching between the pore structure and the expansion behavior of the silicon-based negative electrode is realized, the stress buffering capacity and the ion transmission efficiency of the diaphragm are improved, and the device is suitable for the technical field of lithium ion battery materials.

The invention discloses a graphene nano long-acting anticorrosive paint and a preparation method thereof, and relates to the technical field of anticorrosive paints.The graphene nano long-acting anticorrosive paint is prepared from 100 parts of epoxy resin and 1.0 part of a functionalized graphene mixture; the functionalized graphene mixture comprises a component 1, namely flexible interface-aminosilane functionalized graphene, and a component 2, namely long-chain alkyl grafted hydrophobic graphene; wherein the relative weight ratio of the component 2 in the functionalized graphene mixture, defined as the weight of the component 2 / (the weight of the component 1 + the weight of the component 2), is in the range of 0.1 to 0.4. According to the invention, the dual functionalized graphene is cooperated, and gradient curing and thickness-ratio self-adaptive adjustment are combined. The obtained coating has excellent internal stress buffering capability, stable surface hydrophobicity and wide adaptability to different construction thicknesses, and is excellent in corrosion-resistant comprehensive performance.

The invention belongs to the technical field of super-hydrophobic coatings, and particularly relates to a thermochromic photo-thermal super-hydrophobic coating and a preparation method and application thereof. The thermochromic photo-thermal super-hydrophobic coating sequentially comprises a photo-thermal epoxy bottom layer, a thermochromic epoxy middle layer and a super-hydrophobic surface layer from bottom to top in the thickness direction. Wherein phase change microcapsules for packaging phase change materials are distributed in the photo-thermal epoxy bottom layer, and the surfaces of the phase change microcapsules are modified with polydopamine layers and MXene layers in a layer-by-layer self-assembly mode; thermochromic microcapsules are distributed in the thermochromic epoxy middle layer; the super-hydrophobic surface layer is of a micro / nano structure formed by a silane derivative. Through the multifunctional design of integrating photothermal conversion, phase change and thermochromism mechanisms, all-weather ice resistance / ice removal is achieved, the energy utilization efficiency is optimized through an intelligent temperature control mechanism, and a sustainable solution is provided for surface ice prevention in an extreme environment.

The invention belongs to the technical field of manicure, and discloses a preparation method for instantly-pasted paint nails. The method specifically includes applying a Acrylic Powder glue on a plastic fake nail piece and curing to form a Acrylic Powder layer, using an ink to print a preset pattern layer on the Acrylic Powder layer, and applying a brightening glue on the pattern layer and curing to form a brightening layer, so as to obtain the instantly-pasted paint nails. Through fine process steps and material selection, the invention can effectively improve the thickness and transparency of paint nails.

The invention discloses a powder coating imitation copper wire drawing coating based on a gradient composite structure and a preparation method of the powder coating imitation copper wire drawing coating, and relates to the technical field of novel printing ink. The invention relates to a gradient composite structure-based powder coating copper-wire-drawing-imitating coating, which is characterized by comprising a bottom layer, a middle layer and a surface layer, wherein the bottom layer is an epoxy resin-based powder coating layer containing nano silicon dioxide; the middle layer is a copper-imitating ink wiredrawing layer containing micro-nano copper powder in directional arrangement; the surface layer is a water-based gloss oil layer containing a self-repairing flatting agent; wherein the bottom layer is formed by electrostatic spraying. Through the gradient composite structure design of the bottom layer, the middle layer and the surface layer, the coating provided by the invention shows remarkable advantages in the aspects of hardness (4H), salt fog resistance (more than 1000 hours), self-repairing property and the like, and overcomes the limitation that the traditional coating is insufficient in adhesive force and hard to consider both hardness and wear resistance.

The invention discloses a three-proofing paint precise coating method based on gradient atomization control, and relates to the field of intelligent control, and the method comprises the steps: carrying out the visual scanning of a to-be-coated PCB, and obtaining the type, position and size information of each component on the PCB based on a scanning result, so as to establish a mapping relation between the components and a coating demand; according to the method, the surface of the PCB is divided into a plurality of independent coating areas according to the mapping relation between the components and the coating requirements, and an atomization airflow pressure threshold value and a paint supply amount threshold value which are matched with the protection requirements of each coating area are set for each coating area. The protection and thickness requirements of different components can be accurately matched, blind coating is avoided, independent coating areas are divided according to the protection grade, size and gap characteristics, adaptive atomization airflow pressure and paint supply threshold values are set, the coating requirements of all the areas can be met in a more targeted mode, and paint waste and excessive coating are reduced.

The invention discloses a super-hydrophobic microcapsule self-repairing coating for cavitation damage of a rotating wheel of a water turbine and a preparation method of the super-hydrophobic microcapsule self-repairing coating, and belongs to the technical field of coatings. According to the invention, a composite coating system with self-repairing capability and cavitation energy dispersion characteristics is constructed, and in-situ treatment of cavitation damage of the water turbine runner is realized through the synergistic effect of microcapsule triggered repairing and surface microtexture.

The invention relates to the technical field of anti-corrosion coatings, in particular to a composite anti-corrosion coating for a medium heavy-duty anti-corrosion environment and a preparation method of the composite anti-corrosion coating. According to the technical scheme, the composite anti-corrosion coating for the medium heavy anti-corrosion environment comprises the following components in percentage by mass: a bottom coating component, a middle transition layer component and a surface coating component, and the mass ratio of the bottom coating component to the middle transition layer component to the surface coating component is 33: 17: 50; the durability is improved through multi-dimensional material innovation, a fluorocarbon resin modified waterborne epoxy system is adopted for the bottom coating, and a nano graphene directional arrangement technology is combined, so that a labyrinth effect is formed, and a corrosion medium is blocked; a solvent-free polyurea and microcapsule self-repairing system is introduced into the surface coating, so that automatic repairing after damage is realized; the middle transition layer enhances the interlayer barrier function through the oriented graphene composite material, and the three layers cooperate to construct a compact protection network, so that the medium permeation path is obviously delayed, and the full-life-cycle maintenance cost is greatly reduced.

The invention discloses a coating, a preparation method and application, and relates to the technical field of anticorrosive coatings. The included angle between the plane of most of the lamellar filler in the coating and the macroscopic surface of the base material is controlled to be smaller than 45 degrees through a magnetron orientation method, that is, the lamellar filler is close to the state of being parallel to the surface of the base material, the transmission path of a corrosive medium can be longer and more zigzag, the maze effect can be further strengthened, and the corrosion resistance of the coating is improved. Therefore, the corrosion path of the corrosive medium is greatly prolonged, and the heat-conducting property of the matrix is reserved to the greatest extent. The dry film of the coating still has high corrosion resistance in the ultrathin state, the heat conduction performance of the fin base material of the heat exchanger can be reserved to the maximum degree, the service life of the heat exchanger is greatly prolonged, and the energy-saving long-term effect of the heat exchanger is greatly improved. In addition, the composite coating provided by the invention is simple in preparation process and relatively low in cost, and has extremely high market application value.

A method of manufacturing a surgical instrument that includes a tissue contacting surface operable to apply ultrasonic energy or RF energy to tissue. The method includes applying a hydrophobic coating that includes silicone to a base surface of the tissue contacting surface to form an applied coating layer having a coating application thickness. The method also includes removing portions of the applied coating layer with a resiliently biased mechanical coating removal tool to form a plurality of removed portions of coating. A removal depth of each removed portion of the plurality of removed portions can each be from 50% to 100% of the coating application thickness such that from 10% to 50% of the applied coating layer is removed from the base surface.

Disclosed herein are a method for generating robot path data for robot path(s) to be followed by a robot including a coating tool during coating of at least part of the surface of a spatial substrate with at least one coating material spatial substrate, as well as respective apparatuses, or computer elements. Further disclosed is a robotic system for coating at least one surface of a spatial substrate with at least one coating material. The methods, respective apparatuses, or computer elements allow automated application of coating materials to substrates having a high variation in geometry and provide consistency of application in contrast to manual application of coating materials, for example during repair processes of automotives or automotive parts, which is highly dependent on the painter performing the application.

A finish coat composition, including: 30˜60 parts by mass of film-forming resin, where the film-forming resin includes one or more of acrylic resins and polyurethane acrylate resins; 5˜20 parts by mass of acrylate monomer; 1˜10 parts by mass of photoinitiator; 0.5˜10 parts by mass of leveling agent; 0˜20 parts by mass of matting powder; and 20˜50 parts by mass of solvent. This application further provides a composite material, a middle frame of an electronic device. The finish coat composition according to this application can be crosslinked and cured under an action of ultraviolet light to form a finish coat having good reliability and bonding performance, which is used as a finish coat layer of the middle frame of an electronic device and the battery cover of an electronic device, and has good bonding performance with glue, thereby preventing a screen of the electronic device from falling off.

The invention relates to the technical field of intermediate membranes, in particular to a heat insulation type ionic intermediate membrane and a preparation method thereof.The heat insulation type ionic intermediate membrane is characterized in that hollow silicon dioxide nanotubes serve as filler, epoxy resin modified polyurethane emulsion serves as a base material, auxiliaries are added to prepare a heat insulation coating, and the ionic intermediate membrane layer is coated with the heat insulation coating to form a heat insulation layer; the preparation method comprises the following steps: carrying out amination on a hollow silicon dioxide nanotube by using 3-aminopropyltriethoxysilane, carrying out dehydration condensation on furan-2, 5-diketone and an amino group to synthesize maleimide so as to obtain a maleimide modified hollow silicon dioxide nanotube, and grafting furan carboxylic acid imidazolium salt polyionic liquid by using a Diels-Alder reaction so as to obtain a composite hollow silicon dioxide nanotube; aminated glass fibers, composite hollow silicon dioxide nanotubes, epoxy resin modified polyurethane emulsion and auxiliaries are mixed, and a reinforcing layer coating is obtained; and coating the lower surface of the ionic intermediate film layer with a reinforcing layer coating to form the reinforcing layer.

The invention relates to the technical field of material surface corrosion prevention, in particular to a spraying method for a heavy anti-corrosion coating of a port steel structure. The method comprises the following steps that (1) sand blasting derusting treatment is conducted on a steel structure base body, so that the cleanliness of the steel structure base body reaches the Sa2.5 level, and the roughness is controlled to range from 40 micrometers to 75 micrometers; 2) coating the treated substrate with epoxy zinc-rich primer, and doping graphene modified zinc powder accounting for 1-3% of the total mass of the primer to form a primer layer with a dry film thickness of 60-80 [mu] m; (3) after the primer layer is cured, the primer layer is coated with epoxy micaceous iron oxide intermediate paint, aluminum tripolyphosphate accounting for 2-5% of the total mass of the intermediate paint is further added into the epoxy micaceous iron oxide intermediate paint, and an intermediate paint layer with the dry film thickness being 150-200 microns is formed; 4, the middle paint layer is coated with weather-resistant finish paint, and a finish paint layer with the dry film thickness being 60-80 microns is obtained.According to the method, the adhesive force, chloride ion permeation resistance, salt fog resistance (larger than or equal to 3000 hours) and weather resistance of the coating are remarkably improved, the method is suitable for the harsh marine environment, and the service life of the steel structure can be prolonged to 20 years or above.

The invention discloses an alkali-resistant solar interface evaporation material for aquaculture sewage treatment and a preparation method of the alkali-resistant solar interface evaporation material, and relates to the field of energy environment materials. The method comprises the following steps: S1, mixing clay with iron powder, adding water, stirring, rolling, forming and calcining to prepare an iron-containing modified clay skeleton; s2, uniformly mixing attapulgite, montmorillonite, composite alkali-resistant modified plant fibers, Portland cement and water, spraying the mixture on the framework, and solidifying at room temperature to form a heat-insulating water delivery layer; and S3, uniformly mixing carbon black, attapulgite, Portland cement, composite alkali-resistant modified plant fibers and water, spraying the mixture on the heat-insulating water delivery layer, and solidifying at room temperature to form a heat-absorbing evaporation layer. The material disclosed by the invention is good in alkali-resistant stability, high in solar evaporation efficiency, capable of synchronously removing heavy metals, low in raw material cost, simple and convenient in preparation process and suitable for large-scale treatment requirements of breeding sewage.

The present invention relates to a process for producing a coating from an aqueous, radiation-curable coating composition, wherein the process comprises the steps in the sequence (1) to (4):(1) applying an aqueous, radiation-curable coating composition on a surface of a substrate,(2) drying the aqueous, radiation-curable coating composition, affording an at least partially dried coating composition,(3) irradiating the at least partially dried coating composition with UV light having a wavelength s 220 nm under inert atmosphere, followed by(4) irradiating with UV light having a wavelength 300 nm or with E-beam,wherein the aqueous, radiation-curable coating composition is a dispersion comprising:(A) at least one water-dispersible polyurethane (A), wherein the polyurethane (A) has a urea group (—NH—CO—NH—) concentration of at least 0.1 milli-equivalents per g of polyurethane (A) and of at most 2.6 milli-equivalents per g of polyurethane (A) and the polyurethane (A) is essentially free of radiation-curable, ethylenically unsaturated bonds,(B) at least one radiation-curable diluent (B) with a molar mass less than 750 g / mol and with an acrylate functionality of from 2 to 5, and(C) water and optionally organic solvent, whereby the optional organic solvent is present in an amount of at most 30 wt. %, based on the total amount of water and organic solvent,whereinthe amount of (A) is from 30 to 85 wt. % and the amount of (B) is from 15 to 70 wt. %,based on the total amount of (A) and (B).

The embodiment of the invention provides a plastic-coated steel pipe and a plastic coating process thereof, and relates to the technical field of plastic-coated steel pipes. The plastic-coated steel pipe comprises a steel pipe base body, a metal transition layer, an inner anticorrosive coating, a fiber reinforced winding layer and an outer protective coating are sequentially arranged on the outer surface of the steel pipe base body from inside to outside, and the metal transition layer is a nickel-chromium-aluminum-yttrium alloy layer and is formed on the surface of the steel pipe base body through a supersonic plasma spraying process. And the inner anticorrosive coating is formed by a mixture of bisphenol F type epoxy resin and novolac epoxy resin, and is doped with silicon nitride and zirconium oxide composite nanoparticles subjected to surface treatment. By arranging a multi-stage composite structure of the metal transition layer, the high-temperature-resistant anti-corrosion coating, the fiber reinforcement layer and the self-repairing outer layer and arranging the detachable heat insulation sheath, the interface bonding strength, heat resistance, mechanical damage resistance and corrosion resistance of the plastic-coated steel pipe are improved; and the service life of the composite material in high-temperature, strong-corrosion and complex construction environments is effectively prolonged.

The present application relates to a high-roughness surface treatment method for a braking steel backing, and belongs to the technical field of surface treatment of braking steel backings. The method comprises the following operation steps: step one, placing onto a feeding table a braking steel backing to be processed, and conveying the braking steel backing by means of a conveyor belt so as to perform processing; step two, in an HRT polishing assembly, sequentially passing the steel backing through an ordinary belt sander, a forward planetary gear, a reverse planetary gear and an HRT belt sander to complete the processes of surface roughness treatment and deburring; step three, in a cleaning and rust-proofing assembly, removing processing residues and a saponification liquid from the surface of the braking steel backing by means of a rough cleaning sprayer, and then an air knife I blowing off a cleaning liquid and metal residues; step four, using a rust-proofing sprayer to spray a rust-proofing liquid, and then performing double air cutting; and step five, placing the braking steel backing which has been subjected to surface treatment into a material box for standby storage. By means of treating the surface of the braking steel backing bonded with a friction material, the effects of more stable quality and high-roughness mating surfaces are achieved.

The invention provides a color-coated steel plate with heat-insulating, antibacterial and super-hydrophobic functions, which comprises a metal substrate, and a chemical conversion layer and a primer layer which are sequentially arranged on at least one surface of the metal substrate, and a composite functional finish paint layer is arranged on the primer layer; the composite functional finish paint layer comprises film-forming resin, a near-infrared reflection composite pigment, a dual-mode antibacterial agent and fluorinated nano silicon dioxide; the finishing coat layer in the color-coated steel plate has heat-insulating and antibacterial capabilities and a super-hydrophobic self-cleaning function at the same time; the invention also provides a preparation method of the color-coated steel plate, which comprises the following steps: carrying out surface pretreatment on the metal substrate to form the chemical conversion layer; coating the chemical conversion layer with a primer and carrying out first curing to form a primer layer; the primer layer is coated with finish paint coating, then multi-temperature-zone gradient curing is conducted, and a composite functional finish paint layer is formed; according to the preparation method, a multi-temperature-zone gradient curing process is adopted, the temperature of different curing stages is controlled, and a stable functional structure is constructed.

The present invention provides an electronic or electrical device or component thereof comprising a cross-linked polymeric coating on a surface of the electronic or electrical device or component thereof; wherein the cross-linked polymeric coating is obtainable by exposing the electronic or electrical device or component thereof to a plasma comprising a monomer compound and a crosslinking reagent for a period of time sufficient to allow formation of the cross-linked polymeric coating on a surface thereof,wherein the monomer compound has the following formula:where R1, R2 and R4 are each independently selected from hydrogen, optionally substituted branched or straight chain C1-C6 alkyl or halo alkyl or aryl optionally substituted by halo, and R3 is selected from:where each X is independently selected from hydrogen, a halogen, optionally substituted branched or straight chain C1-C6 alkyl, halo alkyl or aryl optionally substituted by halo; and n1 is an integer from 1 to 27; and wherein the crosslinking reagent comprises two or more unsaturated bonds attached by means of one or more linker moieties and has a boiling point at standard pressure of less than 500° C.

An alloy wheel is formed having a three dimensional configuration defining a face and recessed surfaces. The face of the wheel is machined providing a smooth surface at the face and defining an edge between the smooth surface of the face and the recessed surfaces. A nozzle element for projecting a plasma jet toward the wheel is provided. The plasma jet is projected toward the smooth surface of the face, the edge, and toward at least a portion of the recessed surfaces forming an alloy oxide at least on the face and the edge disposed between the face and the recessed surfaces. A first polymeric coating is applied over the face, the recessed surfaces and the edge disposed between the face and the recessed surfaces.

The invention relates to an automatic paint spraying method and device for a vehicle lens, and relates to the technical field of automobile paint make-up. The appearance flatness of the rearview mirror is determined; when the appearance flatness of the rearview mirror does not fall into the reliable flatness range, obtaining rearview mirror coordinate information; determining position coordinates of a paint spraying area based on the rearview mirror coordinate information and the rearview mirror appearance flatness; determining current paint make-up area image data and target paint make-up area image data; comparing the current paint make-up area image data with the target paint make-up area image data to determine a current paint make-up color deviation value; when the current paint make-up color deviation value exceeds the maximum paint make-up area color deviation threshold value, the current paint make-up color is determined to execute paint make-up operation; and updating the current paint make-up color deviation value in real time in the process of executing the paint make-up operation so as to correct the current paint make-up color. The automatic paint spraying device has the effects of automatically positioning a paint spraying area and reducing manual color mixing chromatic aberration errors.

An asphaltic roofing membrane is produced by applying asphaltic material to reinforcement, adding first granules without preheating, removing loose granules, applying second granules without preheating, heating the membrane and then cutting the asphaltic membrane; and rolling the cut membrane. The process supports granules of varying sizes, materials, and colors, resulting in a durable, high-reflectance roofing membrane.

The present invention discloses a bionic regulation method for a number of bounces of a droplet on a metal surface based on acoustic in-situ monitoring, which comprises the following steps: obtaining dynamic contact characteristics and acoustic properties of a solid-liquid interface of metal superhydrophobic surfaces with different surface information in the droplet bounce process based on an optical-acoustic synchronous in-situ testing system for droplet bounces; and obtaining a correlation among the metal superhydrophobic surface, the acoustic response and the droplet bounce behavior based on the dynamic contact characteristics and the acoustic properties of the solid-liquid interface, and machining and modifying a micro-nano structure of the metal surface by combining a coupled bionic concept according to the correlation. A scientific basis and a novel design method are provided for the bionic regulation of the number of droplet bounces over the metal surface.