69 results about "Conversion coating" patented technology

The present invention belongs to the technical field of functional films, and particularly relates to a UV-protection PVB composite film, a preparation method therefor, and the use thereof. The UV-protection PVB composite film comprises an EVA / PVB composite film formed by an EVA film and a PVB film, wherein an ultraviolet light conversion layer is provided between the EVA film and the PVB film, the EVA film contains an ultraviolet light conversion agent, the PVB film contains an ultraviolet light absorber, and the ultraviolet light conversion layer is formed by coating with a transparent ultraviolet light conversion coating, and contains the ultraviolet light conversion agent, perhydropolysilazane, α-Al2O3 and a solvent. The ultrathin inorganic ultraviolet light conversion layer is designed which uses the perhydropolysilazane as a film-forming substance and the α-Al2O3 as a dispersion aid, and therefore exhibits excellent dispersibility, transparency and durability, thus reducing the use amount of light conversion agents, improving the light conversion efficiency, and solving the problem that light conversion agents added to EVA films are difficult to disperse and thus cannot achieve effective light conversion.

A conversion coating applicator includes a first liner, a hydrogel attached to the first liner, and a second liner removably attached to the hydrogel. The hydrogel includes a trivalent chromium conversion coating solution including a trivalent chromium compound, a zirconate compound, and a dye compound. The conversion coating solution is an aqueous solution.

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.

The invention relates to a method for producing a press-hardened component, comprising the following steps: - providing a steel strip with an aluminum-based coating; - applying an inorganic iron-containing conversion layer on the aluminum-based coating, the layer weight being 3-30 mg / m 2 Cold rolling the steel strip into flexible rolled strip with strip sections of varying sheet thickness; cutting a raw slab from the flexible rolled strip, wherein the raw slab has varying sheet thicknesses with thinnest and thickest sheet sections; and press-forming and hardening the raw slab into a component. Alternatively, cold rolling can be performed before cutting, and the conversion coating applied before or after cutting, or, instead of cold rolling, at least two aluminum-coated steel strip sections with varying sheet thicknesses can be welded together, with the conversion coating applied before or after welding.

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.

An aluminum alloy fastening member has a novel chemical includes conversion coating as a colored coating, a fastener chain. A method producing the aluminum alloy fastening member. The aluminum alloy fastening member includes a chemical conversion coating containing manganese as a component element, and the chemical conversion coating satisfies hue ranges of −3≤a*≤12, −5≤b*≤35, and 45≤L*≤80 in a CIELAB color space as defined by JIS Z 8781-4 (2013).

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 invention discloses a surface treating agent for improving cohesion of a conversion film on a metal surface, and each liter of the surface treating agent comprises the following components by mass: 75-200mg of hexafluorozirconic acid or hexafluorotitanic acid, 10-100mg of nitrate, 10-50mg of an organic coupling agent, 20-50mg of a dispersing agent, 50-200mg of dopamine coated nano oxide particles and the balance of water. The obtained conversion film layer is high in cohesion strength, the compactness of the conversion film layer can be maintained under the high-temperature condition, stress release during dehydration is promoted, and therefore cracking and falling of the conversion film layer after high temperature are resisted; and after the conversion film and the organic coating are jointly heated and cured, the adhesive force of the organic coating is obviously improved, so that the long-term durability of the whole coating is ensured.

The invention belongs to the field of biomedical materials, and discloses a preparation method of a zinc phosphate / hydroxyapatite composite coating, which comprises the following steps: pretreating the surface of a titanium alloy; putting the pretreated sample into a conversion solution for galvanic induced chemical conversion; hydroxyapatite is sprayed on the surface of the conversion coating (transition layer zinc phosphate); according to the invention, zinc phosphate is used as a transition layer to spray hydroxyapatite, so that the bonding strength of the coating can be improved, and the hydroxyapatite layer is prevented from peeling off. The preparation process is simple, quick, simple and convenient to operate and easy to popularize and apply.

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 present disclosure relates to substrates and methods of producing substrates thereof. The substrates have a metal substrate and treated with a deoxidizer prior to having a sol-gel coating disposed on the metal substrate. The sol-gel coating includes about 3 wt % to about 15 wt % by volume of an organic corrosion inhibitor to the sol-gel. Methods of applying the sol-gel coating are also disclosed.

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 relates to the technical field of metal material corrosion resistance research, in particular to a preparation method of a rare earth conversion coating on the surface of an AZ91D magnesium alloy material. According to the preparation method, the AZ91D magnesium alloy is placed in a rare earth passivation solution to be soaked, and preparation of the rare earth conversion coating on the surface of the AZ91D magnesium alloy is completed; the rare earth passivation solution is rare earth salt, a hydrogen peroxide solution and water; the rare earth salt is one or two of cerium chloride and lanthanum chloride. Cerium chloride, lanthanum chloride or cerium chloride and lanthanum chloride are used for replacing highly toxic chromate; precise control over the thickness, density and component distribution of a film layer is achieved by improving key process parameters such as passivation temperature, time, concentration and a soaking mode, the uniformity and matrix binding force of the conversion film are remarkably improved, local corrosion weak points are avoided, the high-quality rare earth conversion film is formed, and the service life of the rare earth conversion film is prolonged. And the corrosion resistance of the AZ91D magnesium alloy is improved through the rare earth synergistic effect.

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.

A conversion coating applicator includes a first liner, a hydrogel attached to the first liner, and a second liner removably attached to the hydrogel. The hydrogel includes a trivalent chromium conversion coating solution including a trivalent chromium compound, a zirconate compound, and a dye compound. The conversion coating solution is an aqueous solution.

In examples, a method of forming a semiconductor package comprises forming a conversion coating solution comprising a salt of a vanadate, a salt of a zirconate, or both with a complexing agent; cleaning a copper lead frame, wherein the cleaned copper lead frame comprises copper oxide on an outer surface thereof; immersing the cleaned copper lead frame in the conversion coating solution; rinsing the copper lead frame; and forming an assembly by coupling a semiconductor die to the copper lead frame, coupling the semiconductor die to a lead of the copper lead frame, applying a mold compound onto at least a portion of the outer surface of the copper lead frame, and curing the mold compound. An adhesion strength at an interface between the mold compound and the at least the portion of the outer surface of the copper lead frame is increased relative to a same assembly formed without immersing the copper lead frame in the conversion coating solution.

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 applicator includes a first liner, a hydrogel attached to the first liner, and a second liner removably attached to the hydrogel. The hydrogel includes a trivalent chromium conversion coating solution including a trivalent chromium compound, a zirconate compound, and a dye compound. The conversion coating solution is an aqueous solution.

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.