摘要:
The present invention relates to a method for coating a surface of a nonferrous metallic substrate, with a bilayer polymeric coating, said method comprising: 1) Subjecting the surface of a nonferrous metal object to a chemical washing; 2) Heating the article whose surface will be coated, to a temperature higher than the melting temperature of the selected polymer and lower than the ignition temperature thereof; 3) Apply the first layer, with a size of less than or equal to 20 mesh particle, constantly keeping the substrate temperature; 4) Applying a second layer of plastic coating on the first coating layer, after the first layer has adhered to the substrate surface, where the second layer can be the same or different polymer, with a particle size equal to or less 20 mesh; 5) Heating further the set of substrate and bilayer coating to a temperature higher than the selected at step 2, but lower than the ignition temperature of the coating and 6) Cooling the thus coated substrate to room temperature. The product obtained by the described process, provides a smooth, nonporous surface, a high adhesion of the coating to the substrate and covering all exposed to the chemical treatment of the first stage surface is ensured, so that the resulting coated substrate is suitable for use in the food industry.
摘要:
A composite structure includes a substrate, a first coating layer arranged on the substrate, and a second coating layer arranged on the first coating layer such that the first coating layer is between the substrate and the second coating layer. The composite structure may further include a third coating layer and an aggregate layer arranged on the second coating layer. A method of forming a composite structure includes applying a coating mixture by spray or by rolling, brushing or squeegeeing to a substrate, partially dissolving the substrate, thereby allowing the coating mixture to partially mix with the substrate to form a first coating layer on the substrate; and forming a second coating layer from the coating compound on the first coating layer.
摘要:
Water-free composition comprising at least one saturated or unsaturated, epoxy-modified polyester as binder, at least one acrylate polymer or polyurethane polymer as further binder, polymer microparticles, at least one polymer which comprises functional groups consisting of blocked isocyanates and amino resins, as crosslinking agent, at least one pigment, at least one organic solvent, and at least one auxiliary or additive, the solids of the composition being at least 50% by weight.
摘要:
A method for producing an assembly of particles bound by a substrate, including: making a compact film of solid particles floating on a carrier liquid, the solid particles potentially holding objects between them; spraying particles onto a face of the compact film opposite to the one immersed in a carrier liquid, to create a substrate-forming-skin adhering to the solid particles; and extracting an obtained assembly outside the carrier liquid.
摘要:
A nanoparticle coated hydrogel may be formed by a method of electrospraying nanoparticles on to a surface includes providing a drug and polymer combination in solvent to an inner capillary of a coaxial dual capillary spray nozzle. A coating with a drug that releases over time may be provided. Open and closed matrixes may be selectively formed to help modify time release periods.
摘要:
A method includes applying a first powder to an aluminum article and heating the first powder to form a first layer on the aluminum article providing mechanical strength, corrosion durability and bonding potential. The method also includes applying a second powder to the aluminum article and heating the second powder to form a second layer on the aluminum article protecting the aluminum article from ultraviolet radiation. A coated article includes an aluminum substrate, an epoxy layer and a topcoat layer. The epoxy layer promotes adhesion, enhances corrosion durability and provides mechanical strength, and is formed by applying a first powder containing an epoxy to the aluminum substrate and curing the first powder. The topcoat layer provides resistance to ultraviolet radiation and environmental contaminants, and is formed by applying a second powder to the aluminum substrate and curing the second powder.
摘要:
Disclosed are systems and methods, including a method that includes depositing a curable adhesive onto a first surface of a substrate in a pre-determined pattern, placing topping material onto the substrate with the deposited adhesive, and applying UV energy to the substrate including the deposited adhesive and the placed topping material to cause curing of the deposited adhesive.
摘要:
Methods and systems for coating metal substrates are provided. The methods and systems include sequential application of low flow and high flow powder coatings followed by a single heating step to provide a cured coating. The methods and systems include a marker that allows coating uniformity to be monitored and assessed during application. The described methods provide coatings with optimal surface smoothness and edge coverage.
摘要:
A method of pulsed laser processing of solid surface for enhancing surface hydrophobicity is disclosed wherein the solid surface is covered with a transparent medium during laser processing and the laser beam incidents through the covering medium and irradiates the solid surface. Two effects are obtained simultaneously. One is the laser-induced texture formation directly under the laser irradiation. The other is the deposition of the laser-removed materials along the laser scan lines. Both effects introduce surface roughness on nanometer scales, and both enhance surface hydrophobicity, rendering superhydrophobicity on the surfaces of both the laser-irradiated solid and the covering medium. Because the beam scan line spacing can be larger than a single scan line width by multiple times, this method provides a high processing speed of square inch per minute and enables large area processing.
摘要:
A method for coating a building panel (1, 1′), including applying a first coating fluid including an organic binder on a surface (11) of the building panel (1, 1′) to obtain at least one coating layer (13), and applying barrier components and photocatalytic particles, preferably TiO2, on said at least one coating layer (13). Also, such a building panel (1, 1′).