2024 results about "Metal substrate" patented technology

The invention relates to environment-friendly hydrophobic ink and a preparation method thereof, and belongs to the technical field of water-based ink. A copolymerization modifier capable of being combined in a water-based polyacrylate emulsion in an initiation polymerization mode in the stage of preparing the modified water-based polyacrylate emulsion is prepared, and an o-hydroxy aromatic ketone structure in the copolymerization modifier can endow water-based ink with lasting ultraviolet absorption performance; the trifluoromethyl structure can reduce the surface energy of the water-based ink, and the benzimidazole ring structure can form stable coordinate bonds with metal ions, so that the bonding performance of the water-based ink and a metal substrate is enhanced; when the copolymerization modifier is used for modifying the water-based polyacrylate emulsion, the long-term performance, the hydrophobic and oil-resistant performance and the adhesion performance on the surface of a metal base material of the finished water-based ink can be effectively improved.

The invention relates to an SPnT surface-mounted microwave mechanical switch, and relates to the technical field of microwave switches, the microwave mechanical switch comprises a metal substrate, a plurality of micro coaxial transmission lines are arranged in the metal substrate, the length direction of the micro coaxial transmission lines is arranged along the thickness direction of the metal substrate, and the two ends of the micro coaxial transmission lines penetrate through the metal substrate; the radio frequency communication mechanism comprises a plurality of radio frequency reeds, one radio frequency reed is correspondingly arranged between every two adjacent micro coaxial transmission lines, the radio frequency reeds and the metal substrate are arranged in parallel at intervals, and linkage pieces are arranged on the radio frequency reeds; the electromagnetic driving mechanisms and the radio frequency reeds are arranged in a one-to-one correspondence mode, the electromagnetic driving mechanisms are connected with the corresponding linkage pieces, and the electromagnetic driving mechanisms are used for driving the radio frequency reeds to be in lap joint with the two corresponding micro-coaxial transmission lines. The microwave mechanical switch provided by the invention can be suitable for application scenes with relatively high requirements on high-frequency performance.

The invention discloses a super-smooth, anti-corrosion and anti-coagulation hydrogel composite coating on the surface of a medical instrument as well as a preparation method and application of the super-smooth, anti-corrosion and anti-coagulation hydrogel composite coating, and the super-smooth, anti-corrosion and anti-coagulation hydrogel composite coating is a surface hydrogel composite coating formed by taking N-(3, 4-dihydroxyphenethyl)-2-benzoylbenzamide (BPDA) as a primer and grafting a hydrophilic polymer on the primer. BPDA is deposited on the surface of the substrate, then hydrophilic monomer surface graft polymerization is initiated by light, and a hydrogel coating is constructed on the surface of the BPDA substrate. The BPDA primer provides excellent corrosion resistance, the corrosion rate of a metal substrate is effectively reduced, and benzophenone derivatives with photoreaction activity on BPDA molecules can mediate firm combination of the hydrogel layer; after meeting water, a stable and compact hydrated layer is formed, the super-lubricating property is achieved, adhesion of protein and cells can be remarkably inhibited, and thrombus formation is effectively prevented. The anti-corrosion and anti-blood coagulation coating has excellent anti-corrosion and anti-blood coagulation properties, and is widely applicable to anti-blood coagulation and anti-corrosion surface modification in the fields of medical instruments and the like.

The invention discloses a preparation method of a metal organic framework modified fluorine-free super-amphiphobic coating, and belongs to the technical field of super-amphiphobic coatings. According to the technical scheme, the method comprises the steps of preparation and modification of a metal organic framework and formation of a fluoride-free super-amphiphobic coating. Adding a metal oxide and nano silicon dioxide particles into a polyacrylic acid solution to form spherical particles; enabling the spherical particles to react with imidazole ligands to obtain metal organic framework particles with porous spherical structures, and wrapping nano silicon dioxide particles in the metal organic framework particles; modifying the metal organic framework particles by using a silane coupling agent; the preparation method comprises the following steps: firstly, attaching modified metal organic framework particles to the surface of a metal matrix, then attaching fluorine-free alkyl silane to the surface of the metal matrix, and heating and curing to obtain the fluorine-free super-amphiphobic coating. The fluorine-free super-amphiphobic coating is applied to the aspect of a metal surface super-amphiphobic coating, and the problems that an existing fluorine-free super-amphiphobic coating is poor in oleophobic and hydrophobic performance and poor in durability are solved.

The invention discloses a silicon carbide power module packaging structure with low thermal resistance and low stress, and belongs to the technical field of semiconductor devices. The packaging structure comprises a metal substrate; the insulating ceramic layer is arranged on the metal substrate; the circuit layer is arranged on the insulating ceramic layer; the lower surface of the silicon carbide chip is connected with the circuit layer through a first interface layer; the composite heat dissipation stress buffer layer is arranged on the upper surface of the silicon carbide chip through a second interface layer; the copper clamp is connected with the upper surface of the composite heat dissipation stress buffer layer through a third interface layer; and the composite heat dissipation stress buffer layer is made of a copper-graphite composite material. According to the invention, the junction temperature of the silicon carbide chip can be greatly reduced, the overall thermal resistance is reduced, the surface stress of the chip is reduced, the warping phenomenon of the chip in the working process is effectively improved, and the long-life reliability of the power module under the long-term thermal cycle working condition is ensured.

Various embodiments of the present disclosure are directed towards an integrated chip (IC). The IC includes a substrate. The substrate includes a metal layer, a device layer disposed over the metal layer, and an insulating layer disposed vertically between the metal layer and the device layer. A semiconductor device is disposed on the device layer. An interlayer dielectric (ILD) layer is disposed over the semiconductor device and the substrate.

The invention discloses a coating, a preparation method and application, and relates to the technical field of anticorrosive coatings. A dry film of the coating comprises 0.1 wt%-6wt% of a lamellar filler; the lamellar filler is prepared by loading magnetic nanoparticles on the surfaces of two-dimensional nanoparticles and coating a layer of high-molecular polymer. After the coating forms a film, a specific magnetic control orientation curing method is matched, so that high dispersion stability and planar orientation arrangement of the two-dimensional nano filler in a resin matrix are realized, and corrosion of water and oxygen to a base material can be effectively blocked. When the thickness of the coating dry film is only 1-2 microns, the coating dry film still has no obvious corrosion phenomenon after being subjected to a neutral salt spray test for 2000 hours. The metal base material with the thin coating thickness has heat conductivity, corrosion resistance and weather resistance, the preparation process is simple, the cost is low, and the metal base material has extremely high market application value.

The invention belongs to the technical field of wear-resistant coatings, and particularly relates to a wear-resistant coating for a metal plate of a compressed garbage truck and a preparation method of the wear-resistant coating. The invention aims to solve the problem that an existing coating for the metal plate of the garbage truck is difficult to keep good protection performance under corrosion and abrasion. The preparation method comprises the following steps: carrying out pre-reaction grafting modification on epoxy resin and amine-terminated polyether to obtain an epoxy prepolymer; alpha-aluminum oxide and barium sulfate are mixed, dispersed, ground and subjected to surface activation, and a basic filler is obtained; adding a mica filler into the basic filler, and shearing and mixing to obtain a composite filler; mixing the epoxy prepolymer with a phosphate auxiliary agent to obtain a primer; dispersing and mixing the epoxy prepolymer and the composite filler to obtain a functional coating; after a metal base material is subjected to sand blasting treatment, primer is pre-sprayed on the surface of the metal base material, and then functional paint is covered and sprayed to obtain the wear-resistant coating. The wear-resistant coating prepared by the invention can keep good protection performance under corrosion and wear, and has high application value.

The invention discloses a heat dissipation substrate and a preparation method and application thereof.The preparation method of the heat dissipation substrate comprises the following steps that a metal substrate body is provided, a groove is machined in the metal substrate body, the groove is filled with a composite heat conduction material, then a cover plate matched with the groove is additionally arranged, and a green body is obtained; the green body is subjected to hot pressing sintering at the temperature of 600-1150 DEG C, so that the composite heat conduction material is converted into a compact sintering body, the grooves are deformed to be just matched with the compact sintering body, a cooked blank is obtained, and then the surface of the cooked blank is ground. According to the preparation method, internal gaps are reduced through the pressing effect of the cover plate, the density of the composite heat conduction material is improved, then the dense sintering body is formed through hot pressing sintering, the dense sintering body and the metal substrate body are fused into a whole, and finally the integrated heat dissipation substrate is obtained. The prepared heat dissipation substrate has good heat conductivity and heat dissipation performance, and can be widely applied to efficient heat dissipation of various power devices.

A transparent wideband microwave absorber unit cell, a transparent wideband microwave absorber and a method of forming a transparent wideband microwave absorber, include a metal substrate, a first layer of glass attached to the metal substrate and having a first pattern of indium tin oxide (ITO) configured as a square loop centered about a central vertical axis and a second pattern of ITO including four equidistant square patches, a second layer of glass attached to the first layer of glass and having a third pattern of ITO configured as a dipole having a cross shape with a center axis coaxial with the central vertical axis, and a third layer of glass attached to the second layer of glass and having a fourth pattern of ITO configured as five circular patches, with a first circular patch located coaxially with the central vertical axis and four equidistant circular patches.

The invention discloses a coating for improving the paint adhesion capability of a metal part of a distribution box, and the coating is prepared by the following steps: depositing a first oxide layer on the metal surface, the first oxide layer comprising Zn element and Ce element; a second oxide layer is deposited on the surface of the first oxide layer, the second oxide layer comprises a Zn element and a Ce element, and the molar ratios of the Zn element and the Ce element of the first oxide layer and the second oxide layer are different; a third oxide layer is deposited on the surface of the second oxide layer, and the third oxide layer comprises a Zn element and a Dy element; and a fourth oxide layer is deposited on the surface of the third oxide layer, the fourth oxide layer comprises a Zn element and a Dy element, and the molar ratios of the Zn element and the Dy element of the third oxide layer and the fourth oxide layer are different. The coating provided by the invention can improve the adhesive ability of the paint to a metal substrate.

The invention discloses a method for preparing a sulfur-doped nickel hydroxide-based self-supporting electrolyzed water anode, and belongs to the technical field of preparation of electrolyzed water catalytic electrodes, and the method comprises the following steps: S1, preparing strong oxidizing salt, thiourea and transition metal salt into an active solution; s2, pretreating the nickel-containing metal substrate to obtain a precursor; and S3, immersing the precursor in an active solution for ultrasonic impregnation, and performing in-situ oxidation to prepare the sulfur-doped nickel hydroxide-based self-supporting electrolytic water anode. According to the method for preparing the sulfur-doped nickel hydroxide-based self-supporting electrolytic water anode, an oxidizing agent-thiourea-transition metal salt synergistic reaction system is adopted, an ultrasonic-assisted technology is combined, and a high-performance catalytic layer is directly grown on the surface of the metal substrate in situ at room temperature; the invention aims to synchronously realize high catalytic activity, excellent stability and macro preparation of the electrode and fundamentally solve the core pain points of long process, high energy consumption, difficulty in amplification and the like in the prior art.

The invention relates to the field of semiconductor lasers, and discloses a vertical cavity surface emitting laser based on a composite metal substrate and photonic crystals, which comprises a CIC composite metal substrate, a GaAs buffer layer, a lower n-type DBR, an n-type contact layer, a multi-junction cascade active region, a p-type contact layer and an upper p-type DBR which are sequentially arranged from bottom to top, a plurality of two-dimensional photonic crystals are etched in the light emitting direction of the upper layer p-type DBR; the thermal stability and reliability of the device under a high-power continuous working condition are effectively improved, stable single-mode output is realized, light field limitation is enhanced, light beam quality is improved, array and on-chip integration are facilitated, the problem of low efficiency of a 650nm red light laser in the aspect of single-mode output of a base VCSEL is effectively solved, and the device has a wide application prospect. The method has a good application prospect and a wide application range.

The invention provides a preparation method of a metal-based ceramic composite membrane with a catalytic ozone function. The preparation method comprises the following steps: preparing functional powder by taking tetrabutyl titanate as a titanium source and silver nitrate or ferric nitrate as a catalytic active metal source and adopting a sol-gel method; a porous metal pipe is used as a supporting body, metal powder and functional powder which are made of the same material as the supporting body are mixed to prepare functional slurry, the functional slurry is evenly deposited on the inner wall of the supporting body through vacuum filtration, and powder particles which are not firmly combined are removed through back flushing; and finally, the binding force between the functional film layer and the metal matrix is improved through high-temperature heat treatment. Wherein the thermal expansion coefficient difference between the metal supporting body and the functional film layer can be reduced by adding the metal powder, the metal powder is melted and diffused in the high-temperature heat treatment stage, and metallurgical bonding is formed between the functional powder and the metal substrate. The method is simple in process, and the prepared metal-based ceramic composite membrane has the advantages of being high in membrane layer binding force, not prone to falling off, high in catalytic activity, high in anti-pollution capacity, stable in operation and the like.

The invention relates to the technical field of OLED (Organic Light Emitting Diode) manufacturing process etching processes, in particular to a silver etching solution for an OLED manufacturing process as well as a preparation method and application of the silver etching solution. The silver etching liquid comprises nitric acid, phosphoric acid, a buffer agent, a metal ion chelating agent and an ionic liquid inhibitor, the ionic liquid inhibitor comprises 1-butyl-3-methylimidazole phosphate, the metal ion chelating agent is selected from at least one of pyromellitic acid, diethylenetriamine pentaacetic acid and ethylenediamine tetramethylene phosphoric acid, and the buffer agent is selected from at least one of sodium chloride, sodium chloride and sodium chloride. The buffering agent comprises acetic acid, and all the components are prepared according to a specific mass ratio. The etching solution can balance the etching rate of silver and indium tin oxide, avoid silver residues and black spot defects, prolong the service life of the solution, reduce the use of a volatile buffer agent, adapt to the OLED fine manufacturing process, improve the product yield and reduce the production cost, and is suitable for etching of a metal substrate in the OLED manufacturing process.

The invention relates to the field of preparation of lubricating materials, in particular to a preparation method of composite phase change lubricating gel based on temperature-friction force synergistic response. The lubricating gel adopts a sandwich layered structure; the bottom layer is a porous ceramic layer formed by micro-arc oxidation, is filled with a disulfide bond dynamic network polymer and is anchored on a metal substrate; the middle layer comprises a microencapsulated phase change material which is dispersed in a polyurethane network containing dynamic disulfide bonds and is wetted with ionic liquid; the surface layer is an epoxy resin coating rich in boron nitride nanosheets, and a rapid heat conduction channel is constructed. Compared with the prior art, the lubricating state can be automatically adjusted in the friction process without external energy input, and the method has the advantages of being sensitive in multi-field coupling response, capable of achieving automatic antifriction protection, high in extreme working condition adaptability and the like.

The invention discloses a nickel-cobalt metal-based wear-resistant and corrosion-resistant coating and a preparation method thereof, and relates to the technical field of surface coatings, and the technical key points of the nickel-cobalt metal-based wear-resistant and corrosion-resistant coating comprise the following steps: S1, carrying out oil removal and sand blasting roughening treatment on the surface of a metal substrate, then cleaning with absolute ethyl alcohol, and drying; s2, nickel-cobalt metal-based alloy powder is prepared, wherein the nickel-cobalt metal-based alloy powder is prepared from, by weight, 55-65 parts of nickel, 20-30 parts of cobalt, 15-18 parts of chromium, 4-6 parts of molybdenum, 3-5 parts of tungsten, 1-3 parts of iron, 0.8-1.5 parts of silicon, 0.5-1.2 parts of carbon and 0.5-1.0 part of boron; the technical effect is that a regular non-smooth micro-pit array is manufactured on the surface of a sprayed layer through interlayer laser micro-texturing treatment. And the molten particles of the next layer of spraying material are embedded into the micro pits to form a strong mechanical interlocking effect, so that the interlayer bonding strength and the anti-shearing capability are greatly improved, and interlayer dislocation and stripping are effectively prevented.

The present application provides a heat exchanger and a manufacturing method of a heat exchanger. The heat exchanger includes a metal substrate, the metal substrate has a fluid channel for circulating a heat exchange medium; and the heat exchanger further includes a coating, the coating includes resin, silica and titanium dioxide, and the coating is arranged to cover at least part of a surface of the metal substrate. Silica particles and titanium dioxide particles are conducive to the formation of a complex micro-nano structure, and leveling and stability of hydrophilic resin contribute to long-term maintenance of the micro-nano structure. The coating of the heat exchanger according to the present application has excellent hydrophilic durability.

The invention relates to the technical field of photoresists, in particular to a positive chemical amplification type photoresist as well as a preparation method, a use method and application thereof, and aims to solve the problems that the photoresist is easily subjected to bottom residue on a metal substrate after development, and the etching yield is poor after metal electroplating in a subsequent process. The key points of the technical scheme are as follows: the mixed resin comprises first resin and second resin; an initiator, wherein the initiator comprises a photoacid production compound; the quenching agent is an alkaline agent or an acid-induced alkali production agent; the auxiliary agent comprises a protective agent, and the protective agent is a group modified azole compound; the solvent is used for dissolving the substances to prepare the positive chemical amplification type photoresist, and by optimizing the composition and the process of the positive chemical amplification type photoresist, on the premise of ensuring the adaptability and the stability of the process, the problems of the side wall angle of a product after exposure and development and the residual of the photoresist on the bottom of a metal substrate after development are effectively improved.

The invention relates to the technical field of anti-corrosion treatment, and provides anti-corrosion molding powder and a radiator anti-corrosion treatment technology.The anti-corrosion molding powder is prepared by taking polyethylene glycol terephthalate as a matrix and cooperating with a TGIC curing agent, phosphoric acid activated bamboo charcoal nanofibers, graphene modified zinc oxide, a lanthanum nitrate and cerous nitrate compound, a silane coupling agent and a functional additive; a composite resin system with a compact nano-structure is prepared through high-speed ball milling pre-activation and a twin-screw gradient extrusion process. The treatment process of the radiator comprises the steps of forming the ceramic substrate layer through micro-arc oxidation, performing dynamic temperature control impregnation with acrylic acid water-based paint, spraying anti-corrosion molding powder, performing microwave infrared gradient curing, and constructing a metal substrate-ceramic layer-organic coating multi-stage protection system. The permeability resistance of the coating is remarkably improved, a continuous and compact composite protection structure is formed, the problems of interface stripping, medium permeation and poor environmental adaptability of a traditional coating are solved, and the coating is suitable for the long-acting anti-corrosion requirement of the radiator under the high-corrosion working condition.

The invention relates to the technical field of adhesives, and discloses an imidazolium ionic liquid and a preparation method and application thereof, the preparation method comprises the following steps: reacting omega-bromoalcohol with 1-(methoxymethyl) imidazole in acetonitrile, and washing with methyl tert-butyl ether to obtain a target ionic liquid precursor; and dissolving the product in acetonitrile, adding 4-trifluoromethyl phenyl isocyanate, and washing with methyl tert-butyl ether after the reaction is finished, thereby obtaining the target imidazolium ionic liquid. The imidazolium ionic liquid disclosed by the invention is applied to a PVB (Polyvinyl Butyral) adhesive, and the PVB adhesive shows excellent adhesion strength in a macroscopic adhesion performance test on the basis of multiple interactions, and particularly has excellent adhesion strength on aluminum. The obtained adhesive can be universally adapted to various substrates such as metal substrates and macromolecule substrates, and finally high-strength and high-durability intelligent adhesion performance is achieved.

The invention provides a modified negative electrode current collector for a sodium metal battery and a preparation method of the modified negative electrode current collector, and belongs to the technical field of secondary batteries. The modified negative electrode current collector comprises a metal substrate and an electron-ion composite conductor coating, the electron-ion composite conductor coating is located on the surface of the metal substrate, and the electron-ion composite conductor coating is obtained by compounding any one of a zeolite molecular sieve and an expansive soil material with a graphitized carbon material. The method disclosed by the invention is simple and feasible, the obtained modified negative electrode current collector can be widely applied to a high-energy-density negative-electrode-free sodium metal battery system, and due to the fact that sodium metal deposition is more uniform and stable, compared with a negative electrode current collector modified only by a graphitized carbon material, the modified negative electrode current collector has better cycling stability.

A composite current collector, including a metal substrate layer and a functional layer located on a surface of the metal substrate layer; where the functional layer is analyzed using an energy dispersive spectrometer, and based on a total number of atoms of the C element, the O element, and a metal element in the functional layer, an atomic percentage of the C element in the functional layer is x, an atomic percentage of the O element in the functional layer is y, and an atomic percentage of the metal element in the functional layer is z, satisfying: 5%≤x≤25%, 10%≤y≤30%, and 55%≤z≤85%. The functional layer with specific element contents on the surface of the metal substrate layer, a coverage of a coating on a surface of the composite current collector can be effectively improved while electrical performance is ensured, thereby improving the safety of the electrochemical device.

The invention discloses a packaging structure with a heat dissipation structure and a packaging method, through the connection cooperation of a first metal carrier plate, a second metal carrier plate, a first heat conduction insulating film, a second heat conduction insulating film, a first rewiring layer and a second rewiring layer, and the subsequent circulation of a cooling liquid in a cooling pipeline, the heat resistance is greatly reduced, the heat dissipation is enhanced, and the heat dissipation efficiency is improved. Power consumption is reduced; according to the invention, the first metal carrier plate and the second metal carrier plate are directly bonded, the first metal carrier plate and the second metal carrier plate are provided with grooves and holes, and finally, the first metal carrier plate and the second metal carrier plate are matched with the first heat-conducting insulating film and the second heat-conducting insulating film to form the cooling pipeline, so that the stress problem caused by the welding process of a water-cooling plate in the traditional technology is improved, and a packaging body is prevented from being damaged; wiring can be conducted on the two faces of the base material, and multi-dimensional packaging is achieved; according to the invention, the metal substrate is used as the substrate, panel warping is reduced, and the stress problem caused by multi-dimensional packaging is solved.

The invention provides a ceramic-based low-frequency wave-absorbing coating and a preparation method and application thereof.The preparation method of the ceramic-based low-frequency wave-absorbing coating comprises the steps that after a metal substrate is subjected to chamfering, deoiling and sand blasting treatment, a bonding layer is prepared on the metal substrate through a plasma spraying technology; preparing a ceramic layer on the bonding layer by adopting a plasma spraying process, and then pasting an aluminum film adhesive tape on the surface of the ceramic layer and flattening the aluminum film adhesive tape; a laser marking machine is used for cutting the aluminum film adhesive tape according to a surface periodic structure unit, and the surface periodic structure unit is of a square and round combined structure; after cutting is completed, the square aluminum film adhesive tape and the round aluminum film adhesive tape are torn down, and then a structural layer is prepared on the ceramic layer through a plasma spraying technology; and tearing off the rest of the aluminum film adhesive tape, placing the coating in a muffle furnace, sintering for a set time at a set temperature, and cooling to obtain the ceramic-based low-frequency wave-absorbing coating. The low-frequency wave-absorbing performance of the coating can be improved.

The invention discloses a discrete device packaging structure based on direct lead bonding, which belongs to the technical field of semiconductor device packaging and comprises a power semiconductor chip, a drain metal substrate, a grid lead terminal, a drain lead terminal, a bonding wire and a supporting shell. The drain electrode metal substrate is connected with the lower surface of the power semiconductor chip through solder. The gate metal electrode on the upper surface of the power semiconductor chip is connected with the gate lead terminal through a bonding wire, and the source metal electrode on the upper surface of the power semiconductor chip is connected with the source lead terminal through solder. The interior of the supporting shell is filled with silica gel or an injection molding process, and the supporting shell covers the power semiconductor chip to serve as an insulating medium. The power density of the device is improved, the parasitic parameter of the whole device is reduced, and the reliability of the interconnection structure is improved.

The invention discloses a preparation method of a high-quality self-supporting polycrystalline diamond substrate. The preparation method comprises the following steps: obtaining a larger first substrate and a smaller second substrate; the molybdenum substrate is a polished molybdenum metal substrate; sowing diamond seed crystals on the first substrate by using an ultrasonic sowing method, and growing a nanocrystalline diamond epitaxial layer by using a CVD (Chemical Vapor Deposition) process; cutting the first substrate by using precise laser to obtain an annular polycrystalline diamond solid seed crystal of which the inner diameter is greater than that of the second substrate; placing a second substrate in the inner diameter of the second substrate, guiding generated tiny diamond grains to the second substrate through a boundary induction mechanism and applying direct current bias voltage, and uniformly wrapping the tiny diamond grains to form a self-supporting polycrystalline diamond substrate; according to the preparation method of the self-supporting polycrystalline diamond substrate, the orientation consistency and the crystallization quality of a diamond film are remarkably improved, and the prepared self-supporting polycrystalline diamond substrate has the advantages of being low in surface roughness, compact in structure, simplified in follow-up process and the like.

The utility model discloses heat insulation type laminated iron, which comprises a metal substrate and a PET (polyethylene terephthalate) layer adhered on the surface of the metal substrate, the PET layer comprises a base layer and a conical array structure formed on the surface of the base layer, the conical array structure comprises a plurality of conical convex structures, and an Ag layer and an oxide protection layer are sequentially arranged on the side surface of each conical convex structure. According to the laminated iron, the reflectivity of the laminated iron in an infrared band can be improved, the heat insulation performance of a material is enhanced, meanwhile, the risk of migration of harmful substances is avoided, and the laminated iron has good safety.

The invention discloses a water-based paint composition of a fingerprint-resistant color coated steel plate and a preparation method of the water-based paint composition, and relates to the technical field of fingerprint-resistant coating materials and functional water-based paint compositions.The water-based paint composition comprises a functional paint composition system composed of water-based film-forming resin and a poor-polarity block type surface conditioning agent; the water-based coating composition is applied to the surface of a metal base material in a roller coating, spraying or blade coating mode, and the oriented migration behavior of an oleophobic chain segment is excited through heat treatment; and the coated steel plate is dried and cured, preferably, a hot air drying or hot-pressing crosslinking mode is adopted, and an oleophobic film layer is prepared on the surface. The method provided by the invention ensures that the system has stable dispersibility and migration responsiveness, realizes spontaneous construction of an oleophobic structure, improves the interface specificity of a film layer, and improves the hydrophobicity and fingerprint pollution resistance of the surface of the steel plate, so that the colored coating has both decoration and functionality, and is suitable for being used in the field of steel plates. The double requirements on appearance stability and anti-pollution performance in practical application are met.

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.