Abstract:
A method for forming a coating on a substrate using an atmospheric pressure plasma discharge. The method comprises introducing an atomised liquid and/or solid coating-forming material into an atmospheric pressure plasma discharge and/or an ionised gas stream resulting therefrom, and exposing the substrate to the atomised coating-forming material. The application also describes a method for polymerising a polymer forming material, and further to apparatus for forming a coating on a substrate.
Abstract:
To provide a method to treat an article and more specifically an aircraft surface in order to prevent icing and to provide a coating that emits very low volatile organic compounds (VOC) during application and setting. Icing on critical aircraft surfaces creates dangerous conditions which impair the stability of the aircraft. The specific areas are referred to as 'cold-soak' conditions and some areas on the 'leading edges' of the wings. The present invention eliminates icing on these surfaces. Environmental icing due to weather is a related problem, but is not the direct problem concerning the present invention. Ice will not form on the surface of certain polymer coatings with low surface energy such as TeflonTM. This is a consequence of the high contact angle between the water droplet and the surface that establishes a non-wetting surface. The objective of the present invention is to implement such coatings and a deposition process. Effective implementation will also result in a coating formulation and deposition process. The coating of the present invention may be used for other objects such as automobiles, consumer products, such as refrigerators, stoves, etc.
Abstract:
Zum Beschichten von Oberflächen durch Flammspritzen eines pulverförmigen Gemisches aus einem hochtemperaturbeständigen Kunststoff und einem Metall wird als hochtemperaturbeständiger Kunststoff ein Polyimid mit einem Glasumwandlungspunkt von über 250°C, welches niedermolekulare, emittierbare Bestandteile in einer Menge von mindestens 1,0 Gew.%, vorzugsweise zwischen 1,0 und 10 Gew.%, enthält, eingesetzt. Auf diese Weise gelingt die Herstellung hochtemperaturbeständiger Beschichtungen von Oberflächen in ausgezeichneter Qualität.
Abstract:
In some examples, a method comprising: controlling a first ratio of a first liquid to a second liquid to form a first suspension comprising a powder and a first carrier liquid composition comprising at least one of the first liquid or the second liquid; directing the first suspension comprising the first carrier liquid and the powder to a plume of a thermal spray device; forming a first portion of a coating comprising the powder on a substrate from the first suspension; controlling a second ratio of the first liquid to the second liquid to form a second suspension comprising a second carrier liquid composition and the powder; directing the second suspension comprising the second carrier liquid composition and the powder to the plume of the thermal spray device; and forming a second portion of the coating comprising the powder on the substrate from the second suspension.
Abstract:
Multiple processes for preparing porous articles are described. The porous articles can be in a wide array of shapes and configurations. The methods include providing a soluble material in particulate form and forming a packed region from the material. The methods also include contacting a flowable polymeric material with the packed region such that the polymeric material is disposed in voids in the packed region. The polymeric material is then at least partially solidified. The soluble material is then removed such as by solvent washing to thereby produce desired porous articles. Also described are systems for performing the various processes.