45 results about "Conversion coating" patented technology

The invention discloses a core-shell structure light conversion agent, a photovoltaic glass light conversion coating liquid and a preparation method of the photovoltaic glass light conversion coating liquid, and belongs to the technical field of photovoltaic packaging. The core-shell structure light conversion agent comprises a core layer and a shell layer, wherein the core layer comprises a light conversion agent luminescent molecular material; the shell layer comprises a silicon dioxide material; the particle size of the core-shell structure light conversion agent is 20-200 nm; and the thickness of the shell layer is 10-50% of the particle size of the core-shell structure light conversion agent. By designing the core-shell structure with the inorganic silicon dioxide shell layer, effective packaging of light conversion agent molecules is realized, so that high light transmittance is maintained, the ultraviolet stability of the light conversion film layer is improved, and the service life of the coating film layer in an outdoor environment is prolonged.

Provided are conversion coating systems and methods, and compositions used therein, as well as conversion-coated multi-metal articles wherein the systems and methods enable conversion coating of differentially constituted surfaces of multi-metal articles (such as those that include surfaces that are steel or galvanized steel, as well as aluminum-containing surfaces) producing uniform, contiguous conversion coatings, without the use of added heavy metals, preferably without phosphorus, and under reduced operating temperatures, which show excellent corrosion resistance and paint adhesion on such surfaces, as compared with conventional commercial pre-treatment comprising tri-cationic zinc phosphate.

[Problem] To provide a surface-treated steel material and a surface-treated member that exhibit excellent corrosion resistance even in soil having a depth of approximately several cm from the soil surface and containing chloride ions. [Solution] A surface-treated steel material according to the present invention comprises: a steel material that serves as a base material; a zinc plating layer that is positioned on a surface of the steel material and contains Mg, Al, and Zn; and a chemical conversion coating layer that is positioned on the surface of the zinc plating layer. The zinc plating layer is a plating layer having a chemical composition that contains, in mass%, at least 0.10% and less than 40.00% of Al and at least 0.10% and less than 15.00% of Mg, with the remainder containing impurities and at least 60.00% of Zn. The chemical conversion coating layer contains P, and the average value of the P concentration in a surface-side region of the chemical conversion coating layer is 1.1-1.5 times the average value of the P concentration in a plating-side region. The average value of the Mg concentration in a Mg-rich region is 1.2-2.0 times the average value of the Mg concentration in the zinc plating layer excluding the Mg-rich region.

The present invention relates to a coating composition for forming a UV light conversion coating for a photovoltaic cell, a UV light conversion coating prepared therefrom, a method for preparing the UV light conversion coating, and a photovoltaic cell and a photovoltaic module including the coating. The composition includes, by mass: (A) 100 parts of a polyurea precursor resin which is a mixture of a specific aspartate compound and a blocked isocyanate curing agent; (B) 0.5 to 5 parts of a UV light conversion agent; (C) 1 to 5 parts of an adhesion promoter; (D) 10 to 100 parts of an inert diluent. The light conversion coating prepared from the coating composition, when used in a photovoltaic cell or a photovoltaic module, can reduce UV band light transmittance and increase visible light wavelength transmittance, improve light conversion efficiency, and have excellent adhesion and aging resistance.

Anti-corrosion metal pretreatment compositions comprising a Group IVB metal, a Group IB metal and polyamidoamine polymers produce corrosion protective conversion coatings on metal substrates; replenisher compositions for the metal pretreatment compositions; methods of making the metal pretreatment compositions; methods of forming an anti-corrosion Group IVB oxide coating on at least one metal substrate surface by contacting the surface with the metal pretreatment composition; and coated metal substrates having anti-corrosion coatings deposited on the metal substrates from chrome VI free, anti-corrosion metal pretreatment compositions having enhanced corrosion resistance of the Group IVB metal oxide coatings and adhesion of the anti-corrosion and primer coating layers to metal substrates.

Provided are conversion coating systems and methods, and compositions used therein, as well as conversion-coated multi-metal articles wherein the systems and methods enable conversion coating of differentially constituted surfaces of multi-metal articles (such as those that include surfaces that are steel or galvanized steel, as well as aluminum-containing surfaces) producing uniform, contiguous conversion coatings, without the use of added heavy metals, preferably without phosphorus, and under reduced operating temperatures, which show excellent corrosion resistance and paint adhesion on such surfaces, as compared with conventional commercial pre-treatment comprising tri-cationic zinc phosphate.

The invention belongs to the technical field of metal material surface coating preparation and corrosion protection, and particularly relates to a stannate chemical conversion coating on a magnesium alloy surface and a preparation method of the stannate chemical conversion coating. The magnesium alloy is soaked in the stannate chemical conversion treatment solution added with the polyelectrolyte, the polyelectrolyte can be adsorbed on the metal surface, a more compact and more uniform composite coating is formed by a reaction product of the polyelectrolyte and the stannate, and the corrosion resistance and the mechanical property of the magnesium alloy are improved. After metal salt is added into the stannate chemical conversion treatment solution, a double-metal composite coating can be formed, and the double protection effect is achieved through the synergistic barrier effect. The coating prepared by the method disclosed by the invention is more uniform and flat in appearance, forms a larger and more uniform grain structure, is more compact and thicker, reduces the problems of microcracks and holes frequently occurring in a traditional stannate conversion film, is environment-friendly in process and environment-friendly, continues the advantages of no chromium and environment friendliness of a stannate system, meets the current environment-friendly requirements, and is suitable for industrial production. And the process is simple.

The low-welding-amount integrated die-casting base comprises a bottom plate, an outer frame and an inner partition plate, the top of the bottom plate is connected with a supporting table, the supporting table is filled with buffering dampers, the top of the bottom plate is provided with a vibration resisting groove, the outer wall of the inner partition plate is coated with a conversion coating, and the conversion coating is arranged in the bottom plate. And communicated vacuum grooves are formed in the top of the inner partition plate and the top of the outer frame. By arranging the supporting table, the vibration resisting groove and the vacuum groove and filling buffer damping and conversion damping, the purpose of weakening vibration generated by operation of equipment in the base or vibration generated by collision of the base through cooperation of absorption buffering, conversion weakening and blocking transmission is achieved; the risk that vibration is transmitted to the server cabinet through the base and consequently equipment in the server cabinet is mixed or damaged is reduced, the stability of the base is improved, then the supporting stability of the server cabinet is improved, and the problem that a welding seam defect is prone to occurring in a welding type base is solved through the integrally-formed structure.

This invention relates to the field of conveying equipment technology and discloses a machine tool conveying assembly for connector cutting and processing. The assembly includes an outer frame, with a conveying device fixedly connected to the top of the outer frame. The outer frame provides an installation position, and the conveying device, mounted on the top of the outer frame, conveys connectors. A pneumatic pressure generating mechanism is located at one end of the top of the outer frame to generate and store gas. A conversion coating mechanism is located at the top of the outer frame, and a feeding mechanism is located at the middle of the top of the outer frame. Multiple solid lubricating rods are internally arranged in the conversion coating mechanism and the feeding mechanism. The feeding mechanism automatically replenishes the lubricating rods, powered by the kinetic energy recovery from the conveying device's own operation. Therefore, no additional power source or control system is required, reducing equipment costs. Furthermore, the simple structure results in low maintenance costs, further reducing overall maintenance expenses.

The invention relates to the technical field of batteries, in particular to an electrode assembly and a battery. The provided electrode assembly comprises a positive plate, a negative plate and a diaphragm arranged between the positive plate and the negative plate, wherein the positive plate comprises a current collector, the current collector is provided with a first surface, the first surface faces the negative plate, and the first surface comprises a first area and a second area; the positive tab is arranged on the edge of one side of the current collector, and the first region is closer to the positive tab relative to the second region; the coating comprises a positive electrode active material layer and a conversion coating, the positive electrode active material layer is arranged in the second area, the conversion coating is arranged in the first area, and the conversion coating comprises a conversion material suitable for reacting with active metal ions. According to the invention, the problem of lithium precipitation in the area near the overhang in the current battery can be relieved, and the fast charging performance and the safety performance of the battery can be improved.

Disclosed is a hydrothermal method of coating a part including iron, the hydrothermal method including placing the part including iron in a black oxide conversion solution including at least one oxidizing salt, heating the black oxide conversion coating solution to at least 20° C., and agitating or circulating the black oxide conversion coating solution so that the at least one oxidizing salt reacts with the iron to form a black oxide coating on the part.

The invention provides a light conversion coating material, a solar cell and a photovoltaic module, and the light conversion coating material comprises the following components in percentage by mass: 1.5%-6% of a light conversion material and 75%-85% of a solvent, the general chemical formula of the light conversion material is NaY (1-x) Mx (WO4) 2, M comprises a rare earth element, and x is 0.05-0.9; the solvent comprises a polar organic solvent; the light conversion coating material is in a transparent state. The light conversion material can absorb part of invisible light and emit visible light, the spectral absorption range of the solar cell with the light conversion coating material is widened, and the photoelectric conversion efficiency of the solar cell is improved. Moreover, the light conversion coating material is in a transparent state, when the light conversion coating material is coated on the light receiving surface of the solar cell to prepare a coating, the light receiving surface of the solar cell cannot be shielded, and the photoelectric conversion efficiency of the solar cell is further improved.

The application belongs to the technical field of photothermal conversion materials, and particularly relates to a photothermal conversion coating, a preparation method thereof and a photothermal conversion device. The preparation method of the photothermal conversion coating comprises the following steps: obtaining a porous substrate, adsorbing an initiator in the porous substrate in situ to obtain a modified porous substrate, and performing a gas phase polymerization reaction on the modified porous substrate with a conjugated polymer monomer and a chlorine source to form a chlorine-doped photothermal conversion coating on the surface of the porous substrate in situ. In the preparation method of the photothermal conversion coating, the initiator is adsorbed in the porous substrate in situ, and the conjugated polymer monomer is diffused in the form of gas on the surface layer of the substrate, so that the monomer is polymerized in the pores of the substrate in situ, and the combination firmness of the coating and the substrate is improved. Meanwhile, the structuralization and doping effects improve the utilization rate of the coating to light energy, so that the photothermal conversion coating has the characteristics of high solar spectrum absorption efficiency, wide light absorption range, high absorption degree and high utilization rate, and exhibits super strong photothermal effect.

Disclosed herein is an aqueous composition having a pH value at 55° C. in the range from 5 to 9, containing at least one different amino organophosphonic acid derivatives of formula (I)where residues R independently of each other are CH2—PO(OR″)2, residues R′ independently of each other are alkylene residues with 2 to 4 carbon atoms, residues R″ independently of each other are H, Na, K, Li or NH4; and n is an integer from 0 to 4; and at least one copolymer, which is water-soluble or water-dispersible. Further disclosed herein are a concentrate to produce such compositions, a pickling method for pickling metallic substrates making use of the compositions, a coating method for coating metallic substrates including the pickling method and a method of using the compositions for pickling metallic substrates.

The present invention relates to a method for cleaning a surface of a substrate using an aqueous alkaline composition having a pH value of less than 10.0, which composition comprises, in addition to water, hydroxide anions a1), at least one complexing agent a2), at least one surfactant a3), and optionally at least one of condensed phosphate and borate anions a4), the surface being at least partially made of at least one steel at least partially coated with at least one zinc-aluminum-magnesium alloy.The present invention also relates to a method for cleaning the surface using the aqueous alkaline composition, a substrate having at least one cleaned surface obtainable therefrom, a method for chemically pretreating the cleaned substrate surface by further using an aqueous coating composition suitable for forming, preferably, a conversion coating on the surface, and a substrate having at least one chemically pretreated surface obtainable therefrom.

Provided herein are aqueous mobility enhancing compositions for improving the transfer of metal containers through manufacturing processes, including manufacturing equipment and transfer equipment; methods of making such compositions; and a method of reducing the coefficient of friction of a metal container surface by contacting a container with the disclosed composition and a container having a metal surface of the composition of the invention on which it has been dried. These compositions can be used to create desirable slip angle characteristics on metal container surfaces that are either only subjected to a cleaning process or simultaneously subjected to cleaning and conversion coating.

The application discloses a composite crosslinking network rust conversion coating and a preparation method and application thereof. The rust conversion coating prepared by the application fully plays a barrier, corrosion inhibition and passivation effect, effectively prolongs diffusion paths of corrosion media such as water, oxygen and NaCl, and has excellent corrosion resistance. Organic components in the coating penetrate into the inside of a substrate through a rust layer and are consolidated, so that the adhesion of the coating is greatly improved. The preparation method of the composite crosslinking network rust conversion coating is simple in operation, low in cost and universal, and can be applied to the preparation of a corrosion-resistant coating of a rust-bearing substrate in an engineering material.

A conversion coating system, a bifunctional conversion coating, a coated product including the bifunctional conversion coating, and a method of manufacture thereof. The conversion coating system includes a bifunctional polymeric additive composition and a conversion coating composition, wherein the conversion coating composition includes a dye compound. The conversion coating composition and the bifunctional polymeric additive composition are configured to be provided separately, combined, or a combination thereof.

A corrosion inhibitor coating composition is disclosed. The corrosion inhibitor coating composition includes a corrosion inhibitor such as 2,5-dimercapto 1,3,4-thiadiazole (DMCT), at least one reactive silane, and a catalyst. The reactive silane may include tetraethoxysilane (TEOS), vinyltriethoxysilane (VTS), 3-glycidoxypropyltrimethoxysilane (GPTMS), methyltrimethoxysilane (MTMS), or a combination thereof. The corrosion inhibitor coating composition does not include chromium. The catalyst may be zirconium isopropoxide or acetic acid. The corrosion inhibitor may also include a thiadiazole, a benzotriazole, an imidazole, or a combination thereof. An article and method of providing a corrosion inhibitor coating is also disclosed.

Method for forming a semiconductor package, comprising the following: Forming a conversion coating solution (100) comprising a salt of a vanadate, a salt of a zirconate or both with a complexing agent; Cleaning a copper conductor frame (200), wherein the cleaned copper conductor frame (200) comprises copper oxide on an outer surface thereof; Immersion of the cleaned copper conductor frame (200) into the conversion coating solution (100); Flushing the copper conductor frame (200); and Forming an assembly by the following: Coupling a semiconductor die (600) with the copper conductor frame (200); Coupling the semiconductor die (600) with a lead of the copper conductor frame (200); Applying a potting compound (700) to at least part of the outer surface of the copper conductor frame (200); and Curing of the potting compound (700), wherein the adhesive strength at an interface between the potting compound (700) and at least part of the outer surface of the copper conductor frame (200) is increased relative to an identical assembly formed without immersion of the copper conductor frame (200) in the conversion coating solution (100).

The utility model provides a kind of solar phase change heat storage device for sunlight greenhouse and the sunlight greenhouse comprising it, it is related to sunlight greenhouse heating technical field, solve the technical problem that the temperature in northern severe cold area sunlight greenhouse is low and is not conducive to crop growth.The solar phase change heat storage device for sunlight greenhouse, including phase change heat storage plate and solar light heat conversion coating;Phase change heat storage plate is set in sunlight greenhouse rear side, and towards sunlight greenhouse front side;Solar light heat conversion coating is set in the front side surface of phase change heat storage plate;Phase change heat storage plate includes base material and phase change material filled in base material;Base material is made of perlite;Solar light heat conversion coating is made of graphene coating;Phase change material is made of paraffin wax.The utility model is by collecting solar heat and shed air heat and carries out phase change heat storage, to night in temperature self-feeding effect and carries out heat release, provides heat for sunlight greenhouse air, maintains sunlight greenhouse air temperature.

The invention discloses a battery structure applied to a vehicle and the vehicle, and belongs to the technical field of vehicles. The battery structure is coated on the outer side of a vehicle body shell and comprises an electric conversion coating; the electric conversion coating is electrically isolated from the vehicle body shell; the electric conversion coating comprises a piezoelectric material used for converting wind energy into electric energy and a photovoltaic material used for converting solar energy into electric energy. The battery structure does not change the structure of the vehicle so as to ensure the aesthetic property of the appearance of the vehicle.

The utility model discloses an ultraviolet light intensity detection device, which relates to the field of ultraviolet light detection equipment and comprises a shell, a light-transmitting window, an ultraviolet light intensity detection module and an automatic shading protection mechanism, the automatic shading protection mechanism comprises a guide rail assembly, a shading piece and a shading driving piece, one end of the shading driving piece is fixedly connected with the shading piece, and the other end is fixed to the inner wall of the shell. The sliding path of the anti-dazzling screen has a starting position and an ending position, the starting position avoids the working window, and the ending position shields the working window; the shading driving part is a two-way shape memory alloy telescopic part with the surface provided with a photothermal conversion coating, and the shading piece is driven by the shading driving part to advance to the final position or retreat to the starting position along the guide rail assembly. According to the utility model, through the automatic shading protection mechanism, the working window can be quickly shaded during strong light irradiation, and the problems of signal saturation, performance drift, device damage and the like are effectively prevented, so that measurement misalignment and device failure are effectively avoided.

The invention belongs to the technical field of wastewater treatment, and provides a biomass carbon-based photo-thermal interface evaporation material and a preparation method and application thereof.The preparation method specifically comprises the following steps that 1, biomass waste is carbonized in a protective atmosphere, and a biomass carbon material is obtained; (2) mixing a biomass carbon material, water and ethanol to obtain a photo-thermal conversion coating solution; and (3) spraying the photo-thermal conversion coating solution to the surface of the super-hydrophilic fiber, and drying to obtain the biomass carbon-based photo-thermal interface evaporation material. According to the invention, the biomass waste is used as a raw material, and the prepared biomass carbon material has a nanoscale three-dimensional pore structure, super-strong hydrophilic and water-conducting capabilities and excellent photo-thermal conversion capability. The biomass carbon-based photo-thermal interface evaporation material prepared in the invention has the following advantages: high-salinity wastewater treatment, brackish water treatment and high-salinity wastewater discharged from farmland concealed pipes can be effectively carried out; the cyclic utilization stability is good.

The invention relates to the technical field of ship corrosion prevention and pollution prevention, and discloses a ship wet film rust conversion synchronous corrosion prevention and pollution prevention integrated construction method which comprises the following steps: performing graded pretreatment on a to-be-constructed surface of a ship, and sequentially completing attachment stripping, rust layer loosening and interface modification; the pretreated surface is coated with the rust-conversion anti-corrosion composite coating in the form of a wet film, and a stable conversion film is formed through chelation reaction of active ingredients in the coating and a rust layer; the gradient construction of the antifouling coating is carried out in the surface drying stage of the conversion film, so that the two coatings form a continuous combination system through molecular permeation. Through rust layer loosening and interface modification, the rust layer does not need to be thoroughly removed, only the rust layer needs to be subjected to loosening treatment and then is modified with a silane coupling agent solution, part of the rust layer can be reserved to serve as a substrate of a rust conversion reaction, the interface polarity can be improved through a silane coupling agent, and the problems that in traditional construction, thorough rust removal operation is large in difficulty and low in efficiency are solved; and meanwhile, the interface bonding force of the rust conversion coating and the base material is improved.

After an anodized film is formed on the surface of an aluminum alloy part of an outboard-motor cylinder block body other than cylinder bores, sealing treatment is performed on the surface of the anodized film and finishing processing of removing the anodized film on a joining surface to expose the aluminum alloy is performed, and then a chemical conversion coating film is formed on the anodized film, which covers the inner peripheral surface of a water jacket, and the aluminum alloy on the joining surface. Accordingly, an outboard-motor cylinder block in which the aluminum alloy on the inner peripheral surface of the water jacket is covered with the sealed anodized film, the sealed anodized film is further covered with the chemical conversion coating film, and the aluminum alloy on the joining surface is covered with the chemical conversion coating film can be obtained.

The application relates to a kind of metal ceramic light-heat conversion coatings with inclined microstructure and a preparation method thereof, and belongs to the technical field of solar light-heat conversion coatings.The coating is deposited on 304 mirror surface stainless steel, and includes four parts from bottom to top: a metal infrared reflection layer, a high-entropy nitride absorption layer, a high-entropy oxynitride absorption layer and an anti-reflection layer, wherein the high-entropy nitride absorption layer and the high-entropy oxynitride absorption layer both have an inclined structure, and form an angle of 110° and 60° with the stainless steel substrate.The absorption rate of the coating is 0.91, and the emissivity is 0.25.Compared with existing metal ceramic light-heat conversion coatings, the following advantages are achieved: the distribution characteristics of nanoparticles in the metal ceramic coating can be individually regulated, the absorption mechanism of composite metal ceramic and dielectric-metal-dielectric coating can be combined, and industrial application is facilitated.

The invention provides a GCr15 steel bearing surface manganese phosphate conversion coating strengthening treatment method, which comprises: carrying out degreasing, acetone cleaning, water washing, acid washing, surface adjustment and phosphorization on a GCr15 steel bearing to obtain a phosphorized GCr15 steel bearing, carrying out refining bath treatment, water washing and blow-drying, carrying out oil bath treatment for 5-10 min at a temperature of 20-30 DEG C, carrying out treatment for 10 h at a temperature of 60 DEG C in a nitrogen atmosphere, and naturally cooling to a room temperature to obtain the GCr15 steel bearing surface manganese phosphate conversion coating. The manganese phosphate coating bearing is obtained. According to the method, the fatigue limit of the GCr15 steel bearing is increased, the service life of the GCr15 steel bearing is prolonged, the strengthening treatment efficiency of the bearing is improved, the cost is reduced, and the method is suitable for industrial production and has good application prospects.

In one aspect, a spray foam chemical conversion coating includes a non-hexavalent chromium aqueous chemical conversion coating solution, a foaming agent, and a propellant. In another aspect, a method of producing a corrosion-resistant coating includes spraying a foam chemical conversion coating on a surface of a metal substrate, allowing the foam chemical conversion coating to react with the surface, and removing excess foam chemical conversion coating from the surface. The foam chemical conversion coating contains no hexavalent chromium.

The invention discloses a pH-NIR dual-response degradable magnesium surface composite coating as well as a preparation method and application thereof, and belongs to the technical field of medical metal material surface modification. The pH-NIR dual-response magnesium alloy composite coating is of a double-layer structure, the inner layer is a conversion coating formed by complexing phytic acid and calcium ions, the outer layer is composed of metal-phenol network functionalized MXene nanosheets, and the polyphenol surface functionalized MXene nanosheets are Nb2C MXene wrapped on the surface of tannic acid. The coating can respond to an acid environment derived from infection, and magnesium is prevented from being degraded too fast in the acid environment while the antibacterial effect is achieved.