43results about How to "Excellent film adhesion" patented technology

The invention provides a technique of high industrial practicality for obtaining a transparent electroconductive coating film having superior electroconductivity, optical transmittance, haze properties, and adhesion. Provided is a method for producing silver nanowire ink, in which a viscosity modifier and a water-soluble acrylic-urethane copolymer resin are added to a water solvent or a mixed solvent of water and an alcohol in which silver nanowires are dispersed. The contained amount of the water-soluble acrylic-urethane copolymer resin relative to the total amount of silver nanowire ink can be 0.05-2.0 mass%. The contained amount of silver relative to the total amount of silver nanowire ink is preferably 0.05-1.0 mass%. The contained amount of the viscosity modifier relative to the total amount of silver nanowire ink is preferably 0.01-1.0 mass%. The viscosity of the silver nanowire ink is preferably adjusted within the range of 1-100 mPa.s.

Disclosed is a coating composition having superior compatibility and surface gloss for forming an insulating film and a method of forming the film. The coating composition includes, based on 100 g of a mixture solution of monoaluminum phosphate and monozinc phosphate, 0.5-5 g of a mixture solution of cobalt hydroxide and strontium hydroxide, 150-300 g of a polyester emulsion resin, 3-10 g of aluminum silicate, and 0.5-6.0 g of a chelating agent, in which the polyester emulsion resin has a weight average molecular weight of 2,000-15,000, a solid content of 15-25% and a viscosity of 100-500 cp. Even when the coating composition which is chromium-free is applied in the form of a thick film on a non-oriented electrical steel sheet, superior insulating properties, corrosion resistance, film adhesion, compatibility and surface gloss can be exhibited.

Disclosed is an aqueous coating composition having excellent coating adhesion, workability, heat resistance and chemical resistance. Particularly disclosed is an aqueous coating composition for sealing, which is suitable for members to be screwed in. The aqueous coating composition contains, as main components, (A) an ethylene-vinyl acetate copolymer resin emulsion and (B) two or more PTFE resin powders having different particle diameters. The aqueous coating composition is characterized by containing 35-80 parts by mass of water per 100 parts by mass of the total of the components (A) and (B).

A chemical treatment liquid for steel material coating primer comprising a zirconium fluorine complex amounting to 50 to 500 ppm by mass in terms of Zr, free fluorine amounting to 5 to 50 ppm by mass and a polyethyleneimine of 300 to 10,000 weight average molecular weight wherein the molar ratios of primary amino and tertiary amino based on the total quantity of amino are 30% or more and 15% or more, respectively, amounting to 5 to 30% by mass based on Zr so as to exhibit a pH value of 3 to 5. Further, there is provided a relevant method of chemical treatment. In the instance of steel material coating, especially electrodeposition coating, there can be realized excellent coating film adhesion, post-coating corrosion resistance and coating adhering-around property.

The invention relates to a low-temperature anti-fingerprint surface treatment agent for galvanized steel sheets and an environment-friendly surface-treated galvanized steel sheet obtained by using the surface treatment agent for surface treatment. The surface of the galvanized steel sheet of the present invention does not contain chromium and does not require high-temperature drying, and can form a surface treatment film under low-temperature drying conditions. The manufacturing process is environmentally friendly and low in energy consumption. The composition of organosilicon compound, titanium compound, vanadium compound and oxidized polyethylene particles (i.e. surface treatment agent) is coated on the surface of galvanized steel sheet, and then dried at a low temperature of 50-75°C, and the surface-treated galvanized steel sheet obtained is simultaneously It has excellent properties such as alkali resistance, solvent resistance, corrosion resistance, fingerprint resistance and coating adhesion.

The hot stamp molded body according to an embodiment of the present invention is provided with a base metal and a plated layer. The plated layer comprises, in order from the base metal to the surface,an interfacial layer, an intermediate layer, and an oxide layer. For the interfacial layer: the structure comprises at least a total of 99 area% of [alpha]Fe, Fe3Al and FeAl; the average Al content is in the range of 8.0 mass% to 32.5 mass%; the average Zn content is limited to being greater than the Zn content of the base metal and 5 mass% or less; the balance of the chemical components comprises Fe and impurities; and the average film thickness is at least 1.0 [mu]m. For the intermediate layer, the structure comprises at least a total of 99 area% Fe(Al, Zn)2 and Fe2(Al, Zn)5; the average Alcontent is 30-50 mass%; the average Zn content is 10-40 mass%; the balance of the chemical components comprises Fe and impurities; and the average film thickness is at least 5.0 [mu]m. For the oxidelayer, the average film thickness is 0.1-3.0 [mu]m.

Disclosed is a polyimide precursor composition solution which can be cured at a low temperature (at 250 DEG C or less) without using a siloxane diamine. This polyimide precursor composition solution has low viscosity even at high concentration. Also disclosed are a photosensitive resin composition obtained from such a polyimide precursor composition solution and having good physical properties, a photosensitive resin film, a thermosetting resin composition, a polyimide insulating film and a printed wiring board with insulating film. Specifically disclosed is a polyimide precursor composition solution containing at least (A) a urethane imide oligomer having a terminal carboxylic acid group and (B) a diamine compound and / or an isocyanate compound.

A chromate-free coated metal sheet according to the present invention includes: a metal sheet; and a coating film α which contains an organic resin A as a film formation component and a flaky aluminum pigment C having a deactivation-treated surface on at least one surface of the metal sheet; wherein the thickness of the coating film α is in a range of 2 to 10 μm.

This surface-treated steel sheet includes: a steel sheet; and a plating layer that is formed on one or both sides of the steel sheet and includes zinc, and vanadium or zirconium. The plating layer hasdendritic crystals which include zinc metal, and an inter-crystal fill region which fills a region between the dendritic crystals and shows an amorphous diffraction pattern in electron diffraction. For the plating layer including vanadium, the inter-crystal fill region includes hydrated vanadium oxide or vanadium hydroxide, and for the plating layer including zirconium, the inter-crystal fill region includes hydrated zirconium oxide or zirconium hydroxide.

Provided are: a grain-oriented electromagnetic steel sheet which exhibits excellent magnetic characteristics and excellent coating film adhesion after strain relieving annealing; and a method for producing this grain-oriented electromagnetic steel sheet. This grain-oriented electromagnetic steel sheet comprises: a steel sheet; a coating film layer A that is a ceramic coating film which is formed on the steel sheet and has an oxide content of less than 30% by mass; and a coating film layer B that is an insulating tension coating film which is arranged on the coating film layer A and contains anoxide. The binding energy of the 1s orbital of oxygen in the coating film layer B is higher than 530 eV; and the tension applied to the steel sheet by the coating film layer B per a thickness of 1.0Mum of the coating film layer B is 4.0 MPa / Mum or more.

A polycarbonate resin molding material for articles to be coated, which contains (A) a polycarbonate resin containing (A-1) a polycarbonate-polyorganosiloxane copolymer having a specific structure and (B) a copolymer having a constituent unit derived from butadiene, and wherein the content of the polyorganosiloxane block moiety in the whole molding material is 0.50-10% by mass and the content of the constituent unit derived from butadiene in the whole molding material is 1-10% by mass.

Provided is a rubber composition having coating affinity comprising mainly component (A), and components (B) and (C) below. Also provided are bellows for rail cars comprising a crosslinked body of therubber composition having coating affinity. The rubber composition having coating affinity is capable of exhibiting excellent performance as a material for forming rubber products (rubber products such as bellows for rail cars) that require rubber properties including tensile strength and breaking elongation, and durability as well as coating adhesion. (A) An ethylene-propylene-diene rubber (EPDM). (B) A non-hydrogenated liquid butadiene rubber having functional group reactable with an isocyanate group and / or a hydroxyl group. (C) An organic peroxide crosslinking agent.

Disclosed is an aluminum lid which is obtained by shaping a coated aluminum base, which has a coating film composed of an aqueous coating material, so that the coating film forms the inner surface of the lid.  The important characteristic of the aluminum lid is in that the coating film has a sea-island phase-separated structure wherein dispersion phases composed of a carboxyl group-containing acrylic resin are dispersed in a continuous phase composed of a base resin.  Consequently, the aluminum lid is free from the problems of conventional aluminum lids using conventional aqueous coating materials, and thus has excellent corrosion resistance, openability and formability.

A grain-oriented electrical steel sheet comprising: a base steel sheet; formed on the base sheet and made of amorphous SiO 2 the formed oxide film; and a tension insulating film formed on the oxide film. The base material steel sheet contains C: 0.085% or less, Si: 0.80 to 7.00%, Mn: 1.00% or less, acid-soluble Al: 0.065% or less, and Seq represented by S+0.406·Se: 0.050% in mass % Below, the remaining part: contains Fe and unavoidable impurities. Wherein, the half-value width (FWHM) of the cristobalite-type aluminum phosphate peak obtained by X-ray diffraction is: (i) when using a Co-Kα excitation source, the half-value width of the peak that appears at 2θ=24.8° (FWHM-Co ) is 2.5 degrees or less; or (ii) when using a Cu-Kα excitation source, the half-value width (FWHM-Cu) of the peak that appears at 2θ=21.3° is 2.1 degrees or less.

A method of manufacturing a grain-oriented electrical steel sheet involves controlling the degree of oxidation (PH2O / PH2) in a decarburization annealing step, controlling the mass ratio of MgO and Al2O3 within an annealing separator in an annealing separator application step, controlling the volume ratio of hydrogen in a mixed gas atmosphere to 50% or greater in a final annealing step, washing by using a solution to which an inhibitor has been added and then acid washing in an annealing separator removal step, controlling a mixed gas and the temperature and annealing in a smoothing step, and controlling the baking temperature and the heat treatment temperature in an insulating coating film formation step.

This oriented electromagnetic steel sheet is provided with a base material steel sheet, an oxide film formed on the base material steel sheet and formed from amorphous SiO2, and a tension insulating film formed on the oxide film. As chemical components, the base material steel sheet contains, by mass percent, less than or equal to 0.085% C, 0.80-7.00% Si, less than or equal to 1.00% Mn, less thanor equal to 0.065% acid soluble Al, and less than or equal to 0.050% of the Seq represented by S+0.406*Se, the remainder consisting of Fe and unavoidable impurities. Regarding the FWHMs, i.e., the half-value widths of the peaks of cristobalite-type aluminum phosphate obtained by X-ray diffraction, (i) the half-value width (FWHM-Co) of the peak appearing at 2theta = 24.8 degrees when using a Co-Kalpha excitation source is less than or equal to 2.5 degrees, or, (ii) the half-value width (FWHM-Cu) of the peak appearing at 2theta = 21.3 degrees when using a Cu-Kalpha excitation source is less thanor equal to 2.1 degrees.

This steel sheet for a container is provided with a steel sheet, an Sn plating layer formed on at least one surface of the steel sheet, and a chemically converted coating layer formed on the Sn plating layer, wherein the Sn plating layer contains 300-5600 mg / m2 of Sn in terms of the metallic Sn amount, the chemically converted coating layer contains 5-30 mg / m2 of a Zr compound in terms of the metallic Zr amount, and the average roughness Ra of the outermost surface of the chemically converted coating layer as determined by a scanning probe microscope is 10-100 nm. When the amount of change inthe yellowness index measured for one measurement point in the outermost surface of the chemically converted coating layer is defined as DELTAYI as represented in formula (1), the average value for the DELTAYI absolute values obtained for a plurality of measurement points included in a unit area of the outermost layer is 5.0 or less.

Disclosed is a light-absorbing member wherein a black lower layer containing nickel and / or cobalt and an upper layer containing an oxide of at least one element selected from aluminum, magnesium and zinc are formed on a surface containing zinc and / or aluminum. Also disclosed is a method for producing such a light-absorbing member. In this light-absorbing member, a coating film exhibiting high light absorption and excellent wear resistance is formed on a metal material surface which is composed of zinc or an aluminum alloy.

A method of manufacturing a grain-oriented electrical steel sheet involves controlling the degree of oxidation (PH2O / PH2) in a decarburization annealing step, controlling the mass ratio of MgO and Al2O3 within an annealing separator in an annealing separator application step, controlling the degree of oxidation in the case that hydrogen is present or controlling the dew point in the case that only an inert gas is present in a final annealing step, and controlling the baking temperature and the heat treatment temperature in an insulating coating film formation step.

A hot-rolled steel sheet has a specified chemical composition, wherein, when the thickness of the steel sheet is defined as "t", a metallographic structure lying between a surface of the steel sheet and a depth t / 4 from the surface in the steel sheet contains tempered martensite and / or lower bainite in a total volume fraction of 90% or more, the tensile strength is 980 MPa or more, and the average Ni concentration in the surface is 7.0% or more.

This steel sheet for a container is provided with a steel sheet, an Ni plating layer formed on at least one surface of the steel sheet, and a chemically converted coating layer formed on the Ni plating layer, wherein the Ni plating layer contains 10-1000 mg / m2 of Ni in terms of the metallic Ni amount, and the chemically converted coating layer contains 5-30 mg / m2 of a Zr compound in terms of the metallic Zr amount. The average roughness Ra of the outermost surface of the chemically converted coating layer as determined by a scanning probe microscope is 10-100 nm, and when the amount of changein the yellowness index measured for one measurement point in the outermost surface of the chemically converted coating layer is defined as DELTAYI as represented in formula (2), the average value forthe DELTAYI absolute values obtained for a plurality of said measurement points included in a unit area of the outermost layer is 5.0 or less.

A roll suitable for use in hot-rolling apparatuses is provided at low cost, the roll comprising a roll base which has a high hardness and is less apt to suffer deformation damages such as dents and a coating film formed on the surface of the roll base by thermal spraying, the coating film having excellent adhesion, wear resistance, and steel-sheet-conveying properties. Also provided is a process for advantageously producing the roll. The surface of a roll base comprising a steel which contains 0.9-3.2 mass% Cr and has a carbon equivalent Ceq, defined by equation (1), of 0.45-1.65 mass% is coated by thermal spraying with a coating film constituted of a self-fluxing alloy containing hard ceramic particles. Thereafter, the coated roll base is subjected to fusing treatment in a non-oxidizing atmosphere to form a diffusion layer having a thickness of 30-200 µm between the coating film formed by thermal spraying and the roll base, and is then cooled or heat-treated. Thus, the roll base is made to have a hardness of 35-60 in terms of Shore hardness HS.

The present invention provides an electrical steel sheet with an insulating coating excellent in film adhesion of the insulating coating and a method for producing the same. An electrical steel sheet with an insulating coating according to the present invention has an insulating coating including an insulating tension coating layer A on at least one side, wherein the weight per unit area of ​​the insulating tension coating layer A is M, and the insulation tension is The tension exerted by coating layer A on the steel plate is set to σ A , the tension applied to the steel plate by the insulating tension coating layer of the unit area weight M / 2 from the surface in the insulating tension coating layer A is 0.80×σ A above. The method for manufacturing an electrical steel sheet with an insulating coating of the present invention includes: coating at least one surface of an electrical steel sheet with a coating-forming treatment liquid, and after the coating, the temperature range of 600°C to 700°C is heating at a heating rate of 100°C / sec or higher, and then sintering at 800°C or higher to form the insulating tension coating layer A, and the coating film forming treatment liquid contains Mg, Al, and Ca selected from phosphoric acid, boric acid, and silicic acid. , at least one of Ba, Sr, Zn, Ti, Nd, Mo, Cr, Ta, Cu, Mn salts, and colloidal silica.

This method of manufacturing a grain-oriented electrical steel sheet involves controlling the degree of oxidation (PH2O / PH2) in a decarburization annealing step, controlling the volume ratio of hydrogen in a mixed gas atmosphere to 50% or greater in a final annealing step, washing using a solution to which an inhibitor has been added in an annealing separator removal step, controlling a mixed gas and the temperature and annealing in a smoothing step, and controlling the baking temperature and the heat treatment temperature in an insulating coating film formation step.

This grain-oriented electrical steel sheet is characterized by having a base steel sheet, an amorphous oxide film formed on the base steel sheet, and a tension insulating film formed on the amorphous oxide film, the base steel sheet containing as the chemical composition thereof, in terms of % by mass, no more than 0.085% C, 0.80-7.00% Si, no more than 1.50% Mn, no more than 0.065% acid-soluble Al, no more than 0.013% S, 0-0.80% Cu, 0-0.012% N, 0-0.50% P, 0-1.00% Ni, 0-0.30% Sn, 0-0.30% Sb, the remainder comprising Fe and impurities, the surface glossiness Gs20(A) in the direction parallel to the rolling direction being 2.0-70, and the surface glossiness Gs20(B) in the direction perpendicular to the rolling direction being 2.0-70.

The grain-oriented electrical steel plate is characterized by having a steel plate, an insulating film arranged on the steel plate, and spinel present fitted into the insulating film in a part on the steel plate that is at the interface of the steel plate and the insulating film, and by the amount of spinel being 5-50 mg / m2 per unit area of the surface of the steel plate.

Provided is a Sn-based plated steel sheet having excellent yellowing resistance, coating film adhesion, and sulfur blackening resistance without being subjected to conventional chromate treatment. This Sn-plated steel sheet has a steel sheet, an Sn-plated layer positioned on at least one surface of the steel sheet, and a coating layer positioned on the Sn-plated layer, the Sn-plated layer containing 0.10-15.00 g / m2 of Sn per single surface in terms of metal Sn, the coating layer containing Zr oxide and Mn oxide, the content of Zr oxide being 0.20-50.00 mg / m2 per single surface in terms of metal Zr, and the content of Mn oxide being 0.20-0.50 mg / m2 per single surface in terms of metal Zr. The content of the Mn oxide in terms of metal Mn is 0.01-0.50 times by mass relative to the content of the Zr oxide in terms of metal Zr, and the depth position A at which the elemental concentration of Mn is maximum is positioned on the surface side of the coating layer compared to the depth position B at which the elemental concentration of Zr is maximum in depth-direction elemental analysis by XPS. The distance in the depth direction between the depth position A and the depth position B is 2 nm or more.