Abstract:
The present invention relates to a method for preparing oxide thin films with high sensitivity and reliability, which can be advantageously used in the fabrication of articles such as gas sensors. The present invention establishes a high reliability process for preparing large area microsphere templates which may be applicable to silicone semiconductor processes by simple plasma surface treatment and spin coating. The present invention achieves remarkably enhanced sensitivities of thin films of gas sensors by controlling the nanostructure shapes of hollow hemisphere oxide thin films by using simple plasma treatment. In particular, the gas sensor based on the nanostructured TiO2 hollow hemisphere according to the present invention exhibits higher sensitivity, faster response and recovery speed to CO gas over conventional TiO2 gas sensors.
Abstract:
The invention relates to a process for the preparation of a composite material, said composite material comprising a substrate and a layer on the substrate, comprising a vapor-depositing step in which a compound comprising a triazine compound is deposited on the substrate at a pressure below 1000 Pa, whereby the layer is formed, wherein during the vapor-depositing step the temperature of the substrate lies between −15 ° C. and +125 ° C. The invention further relates to a composite material, obtainable by the process as disclosed.
Abstract:
Disclosed are solar-reflective roofing and other building materials having high reflectance of near-infrared radiation and high transmission of radiation in the visible light range and a substantial emissivity so as to reduce the heat island effects experienced by the articles while also maintaining an aesthetically pleasing appearance. Also disclosed are related methods for fabrication of such materials.
Abstract:
A dispenser for dispensing a medicament that includes a canister for housing the medicament and a fluid propellant therefor and a drug-dispensing valve wherein one or more of the internal surfaces of the canister and/or valve includes a fluorinated coating prepared from plasma polymerisation of one or more fluorinated monomers selected from the group consisting of CH2FCF3 and C3F6 is disclosed.
Abstract translation:一种用于分配药物的分配器,其包括用于容纳药物的罐和用于其的流体推进剂和药物分配阀,其中罐和/或阀的一个或多个内表面包括由等离子体聚合制成的氟化涂层 或更多的氟化单体,其选自CH 2 CF 3和C 3 F 6。
Abstract:
A method for forming a polymeric coating on a substrate surface, by plasma treating a mixture comprising a free-radical initiated polymerisable monomer having one or more free-radical polymerisable groups in the presence of a free radical initiator, wherein said plasma treatment is a soft ionisation plasma process (a process wherein precursor molecules are not fragmented during the plasma process and as a consequence, the resulting polymeric coating has the physical properties of the precursor or bulk polymer) aid depositing the resulting polymeric coating material onto a substrate surface.
Abstract:
A plasma is produced in a treatment space (58) by diffusing a plasma gas at atmospheric pressure and subjecting it to an electric field created by two metallic electrodes (54,56) separated by a dielectric material (64), and a precursor material is introduced into the treatment space to coat a substrate film or web (14) by vapor deposition or atomized spraying at atmospheric pressure. The deposited precursor exposed to an electromagnetic field (AC, DC, or plasma) and then it is cured by electron-beam, infrared-light, visible-light, or ultraviolet-light radiation, as most appropriate for the particular material being deposited. Additional plasma post-treatment may be used to enhance the properties of the resulting coated products.
Abstract:
The process for producing multilayered sheetlike structures, particles or fibers comprises the steps of (a) applying a reactive polycarboxylic acid or one of its derivatives atop a sheetlike, particulate or fibrous carrier material already comprising, or previously provided with, groups reactive toward, capable of covalent bonding with, the polycarboxylic acid or one of its derivatives, (b) if appropriate heating the carrier material treated in step (a) to a temperature in the range from 60° C. to 130° C. and preferably to a temperature in the range from 80° C. to 120° C. to hasten, complete or further optimize the covalent bonds, (c) applying atop the carrier material a cellulose capable of covalent bonding with the polycarboxylic acid or its derivatives. The present invention further relates to the use of the present invention's process for production of multilayered sheetlike structures, particles or fibers for hydrophilicizing surfaces, in particular for adhesion promotion between hydrophobic and hydrophilic materials and for improving the washability of synthetic fibers, the surfaces which are hydrophilicized by the process forming the sheetlike, particulate or fibrous carrier material.
Abstract:
Processes and apparatus for manufacturing an engineered-composite combining rigid flat-rolled sheet metal continuous-strip and selected polypropylene thermoplastics, which are formulated into dual polymeric coating layers for extrusion deposition, as distinct layers, on a single surface at a time, of continuous-strip, traveling in-line at ambient temperature. Steps for forming a uniform thickness of polymeric layers across strip width, and attraction to an activated metallic surface which provides enhanced adhesion. Solidification of the polymeric layers is augmented by strip temperature during continuous-in-line travel; final dual-surface finishing provides for complete bonding of the polymeric layers on both metallic surfaces.
Abstract:
The invention relates to a process and to the corresponding apparatus for the production of strongly adherent coatings on an inorganic or organic substrate, wherein in a first step a) a low-temperature plasma, a corona discharge or a flame is caused to act on the inorganic or organic substrate, in a second step b) one or more photoinitiators or mixtures of photoinitiators with monomers, containing at least one ethylenically unsaturated group, or solutions, suspensions or emulsions of the afore-mentioned substances, are applied at normal pressure to the inorganic or organic substrate, in a third step c) using suitable methods those afore-mentioned substances are dried and/or irradiated with electromagnetic waves and, optionally, in a fourth step d) on the substrate so pretreated is deposited a metal, half-metal or metal oxide.
Abstract:
The invention concerns a process for replacing an initial outermost coating layer of a coated optical lens with a layer of a new final coating having surface properties different from those of said initial outermost coating which comprises:(a) providing a coated optical lens having an initial outermost coating layer having a surface contact angle with water of at least 65°;(b) subjecting the initial outermost coating layer to a treatment with activated chemical species at about atmospheric pressure, and for less than one minute, in order there is obtained a treated surface having a contact angle with water of 10° or less; and(c) depositing on said treated surface a layer of a final coating having surface properties different from those of said initial outermost coating.