To shorten the wait for the 14th ThGOT and the 6th Optics Colloquium we would like to give you a small foretaste of our numerous exciting technical presentations in the coming weeks.
Use of atmospheric pressure plasma for priming resin-rich woods
Sven Gerullis - INNOVENT e. V. - Surface Technology, Jena
To ensure a long service life, wood requires treatment, especially when used outdoors. To protect against abiotic influences, protective coatings in the form of paints or glazes are often applied to the surfaces. On the other hand, primers containing active substances or impregnation processes are used to protect against biotic influences. In practice, these methods are also used in combination. However, due to the high resin content of some wood species, their varnishing is problematic. Especially in the presence of moisture, delamination of the coating can occur, leading to failure of the protective effect.
In these studies, atmospheric pressure plasmas are used with the aim of improving the adhesion of coatings to such woods. On the one hand, these plasmas can be used in the form of a simple pretreatment, and on the other hand, quartz-like thin films (d = 50-100 nm) can be deposited with these technologies. In addition, active ingredients can be specifically integrated into the growing plasma layers, which makes it possible to realize a protective effect against microorganisms in addition to the paint adhesion-improving effect.
This talk will be presented in SESSION A: FUNCTIONAL COATINGS ON NATURAL MATERIALS on March 12, 2019 at 2:00 pm.
Stone skin against marine animals
Jörg Zschätzsch - EBF Dresden GmbH, Dresden
In addition to corrosion, fouling is one of the two main problems in the maritime sector.
Interface and surface engineering forms a central key technology to prevent biological fouling. By exploiting a variety of surface effects, such as self-cleaning surfaces, biocides, surface energy, elastic modulus, micro- and nanostructuring, and changing electrical potential.
Another approach is electrostatic flocking with the natural product basalt. By forming a dense, fur-like surface with basalt fibers (length 0.5 ... 1.0 mm, diameter 10 ... 15 µm), the fouling of the surface with barnacles can be reduced to a relevant extent. The investigations required for this are being supported organizationally and financially by the German Federal Ministry for Economic Affairs and Energy as part of the BasaltFaserFlock (03SX410) research project.
This talk will be presented in SESSION A: FUNCTIONAL COATINGS ON NATURAL MATERIALS on March 12, 2019 at 2:20 pm.