119 results about "Conversion coating" patented technology

Methods for manufacturing curved electrochromic devices by depositing solution-based material directly onto curved surfaces are disclosed. The curved electrochromic device is prepared by spray-coating the first curved electrically conductive substrate with a solution of one or more (cathodic) inorganic or organometallic precursors, and then exposing the coated substrate to near-infrared radiation, UV radiation, or ozone to convert the one or more (cathodic) inorganic or organometallic precursors to (cathodic) electrochromic layers. The second, complimentary electrically conductive curved substrate is coated with a second (anodic) electrochromic layer. An electrolyte layer is incorporated between said first electrochromic layer and said second electrochromic layer, the substrates are sealed together, to form a curved electrochromic device. This method Is especially useful for curved electrochromic devices employing bent tempered glass or heat strengthened glass.

The invention discloses a composite coating with light conversion, super-hydrophobic and self-cleaning functions as well as preparation and application thereof. Comprising the following steps: preparing a light conversion coating solution, an adhesion coating solution and a super-hydrophobic self-cleaning coating solution; pulling or coating the pretreated substrate to obtain a substrate with a light conversion coating; pulling or coating the substrate with the light conversion coating to obtain a semi-cured adhesion coating; and spraying the super-hydrophobic self-cleaning coating solution on the semi-cured adhesion coating, and curing and forming to obtain the composite coating with light conversion, super-hydrophobic and self-cleaning functions. The composite coating has the properties of light wavelength conversion, high light transmission and self-cleaning, and meanwhile, the composite coating also has good light conversion attenuation resistance and self-cleaning stability; in addition, the composite coating is suitable for various substrates and suitable for large-scale production and use.

The invention provides a water-based metal roof rust conversion coating and a preparation method thereof, and the water-based metal roof rust conversion coating comprises the following components by weight: 10-40 parts of deionized water; 3-10 parts of antirust pigment and filler; 1-5 parts of a rust conversion agent; 0.5-2 parts of a penetrant; 50 to 70 parts of epoxy modified styrene-acrylic emulsion; 0.5 to 2.6 parts of a first auxiliary agent; and 3.6 to 10.5 parts of a second auxiliary agent. The rust conversion agent and the penetrating agent are introduced into the water-based metal roof rust conversion coating provided by the invention, and the epoxy modified styrene-acrylic emulsion is selected as a main raw material, so that the rust conversion coating not only has excellent comprehensive properties (such as excellent adhesion, weather resistance, salt spray resistance and the like), but also has excellent rust conversion and rust prevention effects.

The invention provides a preparation method of a chlorine salt conversion film with high corrosion resistance, which comprises the following steps: dissolving manganese chloride and calcium chloride in water, then adding ammonium dihydrogen phosphate, sodium nitrate and EDTA (Ethylene Diamine Tetraacetic Acid), and carrying out conversion treatment at 50-60 DEG C for 10-15 minutes to obtain a conversion film solution; placing the conversion film solution in a water bath kettle with the temperature of 50-60 DEG C for heating and heat preservation; the magnesium alloy is put into the conversion film solution to form a film for 10-15 min at the film forming temperature of 50-60 DEG C, and a conversion film is formed on the surface of the magnesium alloy; and taking out the magnesium alloy, washing and drying the conversion film, and characterizing. According to the preparation method of the chlorine salt high-corrosion-resistance conversion film, the preparation cost is low, and the prepared film layer is thick and uniform.

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 comprising the coating. The composition comprises by mass: (A) 100 parts of a first epoxy resin that is liquid at room temperature, which is an epoxy resin containing at least two glycidyl ether groups per molecule on average; (B) 33-66 parts of a second epoxy resin that is liquid at room temperature, which is an alicyclic epoxy resin containing at least two epoxy cycloalkyl groups per molecule on average; (C) 33-66 parts of a vinyl ether monomer that is liquid at room temperature; (D) 6-16 parts of a cationic initiator; (E) 3-15 parts of a UV light conversion agent; and (F) 0-200 parts of an inert diluent. The light conversion coating prepared by the coating composition can reduce the UV band light transmittance and increase the visible light wavelength transmittance when used in a photovoltaic cell or a photovoltaic module, improve the light conversion efficiency and have excellent adhesion and aging resistance.

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.

Belonging to the technical field of photovoltaic glass, the invention relates to light conversion coated glass, which comprises a transparent conductive glass layer, an up-conversion coating for absorbing infrared light and emitting visible light, a down-conversion coating for absorbing ultraviolet light and emitting visible light, a nickel oxide hole transport layer, a perovskite light absorption layer, a C60 layer, an electron transport layer and a Cu layer, the transparent conductive glass layer, the lower conversion coating, the upper conversion coating, the nickel oxide hole transport layer, the perovskite light absorption layer, the C60 layer, the electron transport layer and the Cu layer are sequentially arranged from bottom to top. The light conversion coated glass can effectively convert ultraviolet light and infrared light into visible light and improve the utilization rate of incident light, so that the photoelectric conversion efficiency of the photovoltaic cell is improved; after the down-conversion coating and the up-conversion coating are compounded, the down-conversion technology and the up-conversion technology are comprehensively utilized, and the overall photoelectric conversion efficiency of the light conversion coated glass can be improved by 5-8%.

An aqueous conversion coating solution comprises a trivalent chromium compound, a zirconate compound, and a dye compound. The trivalent chromium compound can comprise trivalent chromium compounds such as trivalent chromium sulfate. The dye compound can comprise an azo dye, a chromium complex dye, an anthraquinoid dye, and / or a methine dye. The zirconate compound can comprise alkali metal hexafluorozirconate compounds. The conversion coating solution can comprise a phosphorous compound such as an organic amino-phosphonic acid compound. The conversion coating solution can be formed by mixing a dye additive containing the dye with a trivalent chromium conversion coating solution that does not contain a dye. The conversion coating solution can be used to treat metal substrates comprising aluminum, magnesium, and / or zinc.

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 relates to a method for preparing a manganese phosphate conversion film. According to the method, the nanoscale tungsten disulfide particles are introduced into the surface conditioning agent, and then the manganese phosphate conversion film is further formed, so that the friction coefficient is remarkably reduced, and the lubricating property of the manganese phosphate conversion film is improved.

The invention relates to the use of an aqueous alkaline composition having a pH of less than 10.0 for cleaning the surface of a substrate, said composition comprising, in addition to the aqueous hydroxide anion a1), at least one complexing agent a2), at least one surfactant a3) and optionally at least one a4) of phosphate and borate anions condensed, wherein the surface is at least partially made of at least one steel which is at least partially coated with at least one zinc-aluminum-magnesium alloy; a method for cleaning the aforementioned surface by using the aqueous alkaline composition; a substrate having at least one cleaned surface obtainable therefrom; a process for the chemical pretreatment of the aforementioned cleaned substrate surface by further using an aqueous coating composition suitable for forming a preferred conversion coating film on the surface; and a substrate having at least one chemically pretreated surface obtainable therefrom.

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 invention relates to the technical field of chemical conversion films, and discloses an aluminum alloy surface chromium-free conversion film and a preparation method thereof.The preparation method of the aluminum alloy surface chromium-free conversion film comprises the following steps that after the aluminum alloy surface is polished to be smooth, the aluminum alloy surface is subjected to oil removal treatment, alkali corrosion washing, acid washing and flushing, then the aluminum alloy is put into a chemical conversion solution, and the aluminum alloy surface chromium-free conversion film is obtained; after the reaction is finished, the surface of the aluminum alloy is washed with water and then dried, and a chemical conversion coating is formed on the surface of the aluminum alloy. A chromium-free environment-friendly formula is adopted, the uniform and continuous golden yellow titanium zirconium salt chromium-free conversion coating is prepared, the color development of a base body is obvious, and it is proved through various performance experiments that the corrosion resistance of the conversion coating is good; and a good protection effect can be achieved on the aluminum alloy.

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.

The utility model relates to the technical field of corrosion prevention of aluminum frames, and discloses a long-acting corrosion-resistant treatment device for an aluminum frame, which comprises a cleaning tank, a motor is fixedly connected to the front part of the cleaning tank, a stirring shaft is fixedly connected to the output end of the motor, the stirring shaft is rotatably connected to the inside of the cleaning tank, and the motor is fixedly connected to the cleaning tank. A water tank is arranged at the rear part of the cleaning tank, a water pump is fixedly communicated with the upper part of the water tank, a water outlet pipe is communicated with the upper part of the water pump, a water collector is communicated with the front part of the water outlet pipe, and a plurality of nozzles are arranged at the front part of the water collector; the pickling tank is arranged on the right portion of the cleaning tank, and the acid solution tank is arranged on the rear portion of the pickling tank. According to the utility model, the solar aluminum frame can be subjected to acid-alkali cleaning, a conversion coating with protection performance is formed on the surface of the aluminum frame, and the corrosion resistance of the solar aluminum frame is improved.

An aqueous conversion coating solution comprises a trivalent chromium compound, a zirconate compound, and a dye compound. The trivalent chromium compound can comprise trivalent chromium compounds such as trivalent chromium sulfate. The dye compound can comprise an azo dye, a chromium complex dye, an anthraquinoid dye, and / or a methine dye. The zirconate compound can comprise alkali metal hexafluorozirconate compounds. The conversion coating solution can comprise a phosphorous compound such as an organic amino-phosphonic acid compound. The conversion coating solution can be formed by mixing a dye additive containing the dye with a trivalent chromium conversion coating solution that does not contain a dye. The conversion coating solution can be used to treat metal substrates comprising aluminum, magnesium, and / or zinc.

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.

The invention discloses an aluminum alloy containing an anticorrosive coating and a preparation method thereof, and belongs to the technical field of alloy surface corrosion protection, and the preparation method comprises the following specific steps: (1) carrying out ultrasonic cleaning, polishing and acid pickling on an aluminum alloy substrate to prepare a pretreated aluminum alloy substrate; (2) the pretreated aluminum alloy substrate is placed in a zirconate solution to be soaked, cleaned and dried, and the aluminum alloy substrate with the surface coated with a zirconate conversion film is prepared; (3) respectively adding ZnO and Zn powder into epoxy resin, stirring and dispersing, and then sequentially adding a defoaming agent, a flatting agent, a dispersing agent and a curing agent to prepare an anti-corrosion composite coating; and (4) spraying the prepared anti-corrosion composite coating on an aluminum alloy substrate of which the surface is coated with a zirconate conversion film, and then heating, curing and naturally cooling the aluminum alloy substrate to prepare the aluminum alloy containing the anti-corrosion coating. Through the synergistic effect of the zirconate conversion film, the ZnO and Zn powder in the composite coating and the epoxy resin coating, the corrosion resistance of the aluminum alloy is jointly improved.

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 discloses a preparation method and application of an AlN ceramic product with an in-situ converted AlN coating, and relates to the field of aluminum base material surface treatment and metal matrix composite material preparation. The invention aims to solve the problems of high sintering temperature and high cost in the existing method for preparing the AlN ceramic substrate. The method comprises the steps of 1, pretreatment; 2, preparing an alumina porous skeleton; and 3, placing the aluminum base material with the aluminum oxide porous framework on the surface in an atmosphere furnace filled with N2, heating the atmosphere furnace to a reaction temperature, and reacting N2 with internal aluminum through holes penetrating through the aluminum oxide porous framework at the reaction temperature to generate AlN in situ, so as to obtain the AlN ceramic product with the in-situ converted AlN coating. According to the invention, an AlN ceramic product with high thermal conductivity and high electrical insulation is obtained on the aluminum surface under the conditions of low cost and lower reaction temperature, and the method has very important significance for realizing the development of ultra-high-speed and large-chip integrated circuit packaging substrate materials in China.

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.

A conversion coating composition for treating a metal surface contains one or more Group IV metal ions, such as titanium, zirconium and / or hafnium metal ions, and one or more phenalkamine compounds, such as a Mannich addition product of cardanol, formaldehyde and a polyamine. The conversion coating composition is an aqueous acidic solution or dispersion. Metal surfaces contacted with the conversion coating composition have enhanced corrosion resistance and paint adhesion characteristics.

To provide a chemical conversion coating capable of reducing or avoiding the disadvantageous points of a zinc phosphate process while achieving corrosion resistance and coating adhesiveness equivalent to tri-cationic zinc phosphate chemical conversion coating.SOLUTION: An acidic aqueous bismuth chemical conversion coating composition including A) dissolved and / or dispersed bismuth, B) at least one water-soluble organic chelate agent existing in an amount sufficient to dissolve or disperse A) and C) dissolved copper ions has a pH of approximately 2.0 to approximately 6. Provided are a method for manufacturing the bismuth chemical conversion coating composition, a method for vapor-depositing the bismuth chemical conversion coating on a metal substrate and a product having a metal surface including the bismuth chemical conversion coating.SELECTED DRAWING: None

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.