A selectively-absorbing material includes a silicone polymer and transition-metal oxide nanoparticles dispersed therein. Each of the transition-metal oxide nanoparticles includes manganese. A solar receiver includes (i) a metal substrate including an etched surface having a microroughness between 0.05 micrometers and two micrometers; (ii) a polymer matrix disposed on the etched surface; and (iii) transition-metal oxide nanoparticles dispersed within the polymer matrix. A method for producing transition-metal oxide nanoparticles includes recrystallizing a plurality of two-element nanoparticles at a temperature between 300 and 700 C. The plurality of two-element nanoparticles includes at least two of (i) copper oxide nanoparticles, (ii) manganese oxide nanoparticles, and (iii) iron oxide nanoparticles. A method for fabricating a selective-absorber includes etching a top surface of a metal substrate; depositing a polymer-matrix composite on the etched top surface; and interdiffusing the polymer-matrix composite and the metal substrate. The polymer-matrix composite includes transition-metal oxide nanoparticles dispersed therein.

The present invention relates to a method for producing a multilayer coating film, the method including sequentially applying a base coating, a glitter pigment dispersion, and a two-component clear coating on or above an electrodeposition coating film and then simultaneously curing these three coating films, in which the glitter pigment dispersion includes an aluminum flake pigment, titanium oxide, a hydroxy group-containing acrylic resin, a viscosity modifier, and water, a content of the titanium oxide is 10 mass % to 20 mass % of a total solid content of the glitter pigment dispersion, and a mass ratio of the aluminum flake pigment/the titanium oxide is 0.8 to 1.2.

The method for forming a coating of the present invention includes: a first step of applying a first solution containing a polysilazane to a surface of a metal substrate and heating the first solution to form a first coating on the surface of the metal substrate, and a second step of applying a second solution containing a polysilazane to a surface of the first coating and heating the second solution at a temperature lower than a heating temperature in the first step to form a second coating on the surface of the first coating, wherein a density of the first coating is less than 2.00 g/cm.sup.3, and a density of the second coating is 2.00 g/cm.sup.3 or more.

A coating structure includes a composite coating layer over a substrate. The composite coating layer includes 4.3 wt % to 7.6 wt % carbon (C), 9.5 wt % to 21.8 wt % oxygen (O), 1.2 wt % to 3.5 wt % aluminum (Al), 23.5 wt % to 42.6 wt % titanium (Ti), 16.8 wt % to 41 wt % nickel (Ni) and 14.3 wt % to 23.7 wt % zirconium (Zr). The composite coating layer includes a rough surface, and the surface roughness of the rough surface is in a range of 1 m to 50 m.

Provided is a bilayer composition for surface treatment of a steel plate and a surface-treated steel plate using same. The bilayer composition for surface treatment of a steel plate, comprising an undercoat coating composition including 1 to 12 wt % of a phenoxy resin, 0.001 to 1.0 wt % of colloidal silica, 0.001 to 1.0 wt % of a silane coupling agent, 0.1 to 1.0 wt % of a corrosion inhibitor, 0.001 to 1.0 wt % of a phosphoric acid compound as a long-term corrosion resistance improving agent, and a balance of water; and a topcoat coating composition including 0.1 to 5.0 wt % of an acrylic acid resin, 30 to 50 wt % of colloidal silica, 40 to 60 wt % of alkoxy silane, 5 to 15 wt % of an acrylate-based monomer, 0.01 to 1.00 wt % of an acidity control agent, and a balance of an organic solvent.

The present invention relates to a method of preparing a polymer film using chemical vapor deposition using sulfur as an initiator (sCVD) capable of manufacturing a polymer film through polymerization of sulfur and a monomer using gas-phase sulfur as an initiator. In the manufactured polymer film, any of various monomers and sulfur can be polymerized into a copolymer, and it is possible to manufacture a polymer film having a high content of sulfur, an excellent refractive index, and excellent transmittance.

Tableware, utensil and a preparation method thereof are provided, the tableware includes a bowl body. The bowl body includes a side wall portion, the side wall portion is connected to a bowl bottom through an arc-shaped portion. A bottom of the bowl bottom is provided with a bowl seat; the side wall portion, arc-shaped portion, and bowl bottom form a first chamber with an upward opening, the bowl seat is in a circular shape to form a second chamber with a downward opening; a dipping layer, which is provided at a bottom of the bowl body and covers the bowl bottom and bowl seat. By performing a dipping treatment on the bowel bottom and bowel seat of the bowl body, a plastic dipping layer is applied to surfaces of the bowl bottom and bowel seat. The dipping layer has characteristics of low thermal conductivity and high friction coefficient.

A method of manufacturing a razor blade cutting edge, the method including: applying a single coating of a polymer material to the razor blade cutting edge to form a coated blade edge; selecting a temperature profile, where the temperature profile has a temperature and a time, and wherein the temperature profile is selected based on a composition of the razor blade cutting edge; heating the coated blade edge at the temperature and for the time indicated by the selected temperature profile to adhere the polymer material to the razor blade cutting edge; and optionally treating the coated blade edge with a solvent or a mechanical process to partially remove the coating.

The present invention provides a method for forming an inorganic coating film, the method including: forming irregularities having a thickness of 0.1 to 1.0 m on a base material corroded by an acid or a base material having a surface chemically and/or physically changed by an acid, using an inorganic coating liquid containing a copper ion and phosphoric acid and having a pH value of 2.0 to 6.0, in which the inorganic coating film includes copper and phosphorus derived from the copper ion and phosphoric acid. Furthermore, the present invention provides an inorganic coating liquid used in such a method, an inorganic coating film formed by the method, and a device having the inorganic coating film.

A resin coated metal sheet includes: a metal sheet; and a resin layer configured to coat at least one face of the metal sheet. A pushing depth of the resin layer on a side adhered to the one face of the metal sheet is 100 nm to 250 nm, the pushing depth being determined by a nano indentation test, and a melting point of the resin layer is 210 C. to 270 C.