Non-stick PTFE coated cooking pots/pans.These include coatings with intumescent functionality. Flame-retardant materials and coatings are being developed that are phosphorus and bio-based.
Coatings that alter or have magnetic, electrical or electronic properties.Anti-reflective coatings for example on spectacles.Anti-Friction, Wear and Scuffing Resistance Coatings for Rolling-element bearings.Ĭoatings are used to alter tribological properties and wear characteristics.
These coatings include primers, basecoats, and clearcoats, and they are applied using various techniques, including electrostatic and spray gun applications. Īutomotive coatings are used to enhance the appearance and durability of vehicles. Efforts to improve the performance of wood coatings continue. Wood has been a key material in construction since ancient times, so its preservation by coating has received much attention. The coating, sealing, and waterproofing of wood have been going on since biblical times, with God commanding Noah to build an ark and then coat it. They tend to be elastomeric to allow for movement of the roof without Roof coatings are designed primarily for waterproofing and sun reflection to reduce heating. Ĭoatings are used to seal the surface of concrete, such as seamless polymer/resin flooring, bund wall/containment lining, waterproofing and damp proofing concrete walls, and bridge decks. Anticorrosion coatings may use graphene in combination with water-based epoxies. The body and underbody are typically coated with underbody coating. This use includes preserving machinery, equipment, and structures. Ī major coating application is to protect metal from corrosion. A decorative coating can offer a particular reflective property, such as high gloss, satin, or a flat or matte appearance. Most coatings to some extent protect the substrate, such as maintenance coatings for metals and concrete. A pipe carrying water for a fire suppression system can be coated with a red (for identification) anticorrosion paint. Coatings can be both decorative and have other functions.
A roll of substrate, when wound through the coating machine, is typically called a web.Ĭoating applications are diverse and serve many purposes. If the substrate starts and ends the process wound up in a roll, the process may be termed "roll-to-roll" or "web-based" coating. Many industrial coating processes involve the application of a thin film of functional material to a substrate, such as paper, fabric, film, foil, or sheet stock. A number of these non-all-over coating processes are printing processes. A further consideration for 'non-all-over' coatings is that control is needed as to where the coating is to be applied. Ī major consideration for most coating processes is that the coating is to be applied at a controlled thickness, and a number of different processes are in use to achieve this control, ranging from a simple brush for painting a wall, to some very expensive machinery applying coatings in the electronics industry. semiconductor device fabrication (where the substrate is a wafer), the coating adds a completely new property, such as a magnetic response or electrical conductivity, and forms an essential part of the finished product. Functional coatings may be applied to change the surface properties of the substrate, such as adhesion, wettability, corrosion resistance, or wear resistance. blue for process water, red for fire-fighting control. Paints and lacquers are coatings that mostly have dual uses of protecting the substrate and being decorative, although some artists paints are only for decoration, and the paint on large industrial pipes is for preventing corrosion and identification e.g. Coatings may be applied as liquids, gases or solids e.g. The purpose of applying the coating may be decorative, functional, or both. ( June 2021)Ī coating is a covering that is applied to the surface of an object, usually referred to as the substrate. You can help by converting this article, if appropriate. This article is in list format but may read better as prose.
0 kommentar(er)
