autoregion international - 02/2022

25 in the focus of a variety of industrial applications. Through the use of such DTM-materials it is possible to reduce labor costs at the application process and throughput times can be improved and emissions can be lowered. The approach to fulfill such requirements is to use well known and industrially widely used coating technologies based on the so-called Sol-Gel process with its binder components. Sol-Gel Coatings are used in industrial processes as single layer corrosion protection materials for light-metals and provide excellent protection with low thickness coatings. Based on their chemical structure they show excellent adhesion to metal surfaces and are inert to most chemical attacks. The basic structures are highly crosslinked organic-inorganic hybrid polymers. Additional properties such as so called easy-to-clean properties are already included in such surfaces. The new generation of Sol-Gel coatings presented here are DTM-coatings that are Summary High-Performance DTM-Beschichtungen auf Sol-Gel Basis Metallober flächen werden im Automobilbereich häufig durch traditionelle Beschichtungen und Lackierungen dekorativ gestaltet und eine zusätzliche protektive Eigenschaft soll dabei auch für die Oberflächen der Bauteile enthalten sein. Nach dem Stand der Technik werden dafür mehrschichtige Schichtaufbauten eingesetzt, die aus einer Grundierung (Primer) bestehen, auf die Metallic-Lacke und meistens eine farblose Deckbeschichtung appliziert werden. Diese Materialien liefern die vielfältig bekannten Oberflächen von vielen Teilen in und an Automobilen. Es ist herausfordernd, ähnliche Eigenschaften mit weniger Schichten zu erzielen. Grundlegende Anforderungen wie mechanische und chemische Beständigkeit, Korrosionsbeständigkeit … Weiterlesen https://t1p.de/w6c09 It is challenging to achieve similar or same properties with less coating layers. Fundamental requirements such as high mechanical and chemical resistance, excellent corrosion resistance and weatherability, combined with a very high decorating aspect must be achieved to be able to substitute classic multi-layer coatings by only one single layer. Those products are known as DTM (direct-to-metal) coatings and are High-performance DTM coatings on Sol-Gel basis By Dr.-Ing Georg Wagner, Executive Director, NTC Nano Tech Coatings GmbH There are many automotive applications that have traditional decorative coating surfaces with additional protective properties for a huge variety of metal parts. Typically, and according to the state-of-art multi-layer coatings were used consisting of a primer plus metallic and transparent top-coat. Those coating systems provide the well-known surfaces for many automotive parts. Images: © NTC Share developed as metallic coatings and are seeing first industrial uses. The backbone of the binders inhibits a high degree of inorganic polymers which are highly inert and stable. Through the formulation of a Sol-Gel based metallic coating a huge variety of potential applications is possible on top of different metals when long lasting properties must be combined with stable decorative effects and easy-to-clean properties. NTC Nano Tech Coatings GmbH https://www.ntcgmbh.com/en Dr. Georg Wagner

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