Abstract:
An electrochemical sensor for detecting urea in a sample includes a composite membrane that includes an enzymatic layer and an outer diffusional layer. The outer diffusional layer is disposed between the enzymatic layer and the analytical sample, preventing direct contact between the enzymatic layer and the analytical sample.
Abstract:
The present invention provides a process for forming a plural layer coating film which is excellent in a chipping resistance and a corrosion resistance, characterized by comprising the steps of coating a cationically electrodepositable coating material (a) on an article to be coated and curing it by heating, then coating a water based thermoplastic chipping resistant coating material (b) and controlling a solid content in the coating film to 40% by weight or more, thereafter coating a water based intermediate coating material (c) and curing both coating films of the coating material (b) and the coating material (c) by heating and then coating a top coating material (d) and curing it.
Abstract:
Material with high oxygen barrier properties is prepared by evaporating polyfunctional acrylate monomer and condensing the acrylate as a monomer film on a plastic sheet, or by roll coating acrylate monomer onto a sheet in a vacuum. The acrylate is polymerized by irradiation by ultraviolet or electron beam. A layer of metal or oxide oxygen barrier material is applied over the first layer of cross-linked acrylate. A polymerized acrylate layer is applied over the metal layer. Low oxygen permeability polypropylene, polyester or nylon sheets can be made by these methods. Adhesion of the acrylate layer on the plastic sheet substrate is enhanced by reactive plasma treatment of a surface immediately before deposition, the plasma treatment and coating being conducted in vacuum within less than three seconds between plasma treatment and coating. Condensation efficiency is also enhanced by chilling the substrate of the substrate on which the acrylate is condensed to temperatures below 0null C. A backup drum in the apparatus may be cooled to less than null15null C.
Abstract:
An electroless plating method of the present invention includes the steps of preparing a substrate having an insulating body and a conductive pattern formed thereon, adhering a catalytic metal serving as a catalyst of an electroless plating onto the insulating body and the conductive pattern, forming selectively a protection film or an oxidizing agent used to oxidize the catalytic metal on the catalytic metal in a space portion between the conductive pattern, and forming selectively a metal layer on the conductive pattern by the electroless plating.
Abstract:
Provided is a Ag-based conductive paste for a terminal electrode which suppresses oxidation of the Ni surface of an internal conductor and therefore brings about excellent joining with Ni even when baking is performed in the atmosphere in the case where Ni is used as the internal conductor of a laminated ceramic electronic component. The conductive paste includes at least one of an Ag powder and an Ag alloy powder, a nickel boride powder, an inorganic binder and an organic vehicle, wherein the quantity of the nickel boride powder is within the range of about 5% by weight or more, but less than about 60% by weight of the total paste.
Abstract:
An MEA preparation method involves low temperature plasma deposition of catalysts such as platinum onto a substrate to form a proton-conducting cation-exchange membrane. The substrate may be a solid polymer electrolyte membrane, or may include carbon cloth or carbon particles. The deposition is carried out at atmospheric pressure without the addition of noble gases to the reactant carrier.
Abstract:
A thermal barrier coating for an underlying metal substrate of articles that operate at, or are exposed to, high temperatures, as well as being exposed to environmental contaminant compositions. This coating includes a porous outer layer having an exposed surface and comprising a non-alumina ceramic thermal barrier coating material, as well as alumina infiltrated within the porous outer layer in an amount sufficient to protect the coating at least partially against environmental contaminants that become deposited on the exposed surface. This coating can be used to provide a thermally protected article having a metal substrate and optionally a bond coat layer adjacent to and overlaying the metal substrate. The thermal barrier coating can be infiltrated with the alumina by treating the porous outer layer with a liquid composition comprising an alumina precursor and then converting the infiltrated alumina precursor to alumina.
Abstract:
Various embodiments of the invention present techniques for forming structures via a combined electrochemical fabrication process and a thermal spraying process or powder deposition processes. In a first set of embodiments, selective deposition occurs via masking processes (e.g. a contact masking process or adhered mask process) and thermal spraying or powder deposition is used in blanket deposition processes to fill in voids left by selective deposition processes. In a second set of embodiments, after selective deposition of a first material, a second material is blanket deposited to fill in the voids, the two depositions are planarized to a common level and then a portion of the first or second materials is removed (e.g. by etching) and a third material is sprayed into the voids left by the etching operation. In both embodiments the resulting depositions are planarized to a desired layer thickness in preparation for adding additional layers.
Abstract:
A process for repairing a multi-layer coating of a substrate, in particular, vehicles having a blemished area, comprising the following successive steps: A) optionally, preparing the blemished area in a conventional manner, B) sanding the blemished area and the transitional zone between the blemished area and the intact existing coating, C) optionally, cleaning the sanded surface (nullrepair surface), D) applying a pigmented water-based or solvent-based base coat onto the sanded and optionally cleaned repair surface and fading out into the areas of the intact existing coating, E) applying the two-component aqueous clear coat based on an OH-functional binder and a polyisocyanate crosslinking agent at conventional spraying viscosity onto the base coat, F) fading out into the areas of the intact existing coating, which border the surface coated with the base coat, with the aqueous clear coat material, wherein the aqueous clear coat in step F) exhibits the same spraying viscosity as the aqueous clear coat applied in step E) or alternatively after step C), E1) applying a two-component aqueous pigmented one-layer top coat based on an OH-functional binder and a polyisocyanate crosslinking agent at conventional spraying viscosity onto the repair surface, F1) fading out into the areas of the intact existing coating which border the repair surface with the aqueous pigmented one-layer top coat material, wherein the aqueous pigmented one-layer top coat in step F1) exhibits the same spraying viscosity as the aqueous pigmented one-layer top coat applied in step E1), G) curing the resultant coating comprising base coat and clear coat and optionally, H) sanding the cured coating and polishing the sanded area.
Abstract:
A solventborne coating material curable physically, thermally, or thermally and with actinic radiation, comprising A) at least one binder curable physically, thermally, or thermally and with actinic radiation, B) at least one color and/or effect pigment, and C) at least one colorless, transparent or opaque powder which is substantially inert with respect to the other constituents of the coating material and whose particles have an average size of from 1.0 to 10.0 nullm and a density of from 1.25 to 3.6 g cmnull3 and its use as basecoat material for producing multicoat color and/or effect paint systems.
Abstract translation:A)至少一种可物理,热或热和光化辐射固化的粘合剂,B)至少一种颜色和/或效果颜料,和C)至少一种颜料和/或效果颜料, 至少一种无色,透明或不透明的粉末,其相对于涂料的其它成分基本上是惰性的,并且其颗粒的平均尺寸为1.0至10.0μm,密度为1.25至3.6g cm -3 并且其用作生产多色彩和/或效果涂料体系的底漆材料。