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Stanovení světlostálosti různých druhů nátěrových systémů aplikovaných na vybrané druhy tropických dřev
Fricová, Michaela
This master thesis deals with the application of various types of surface treatments on selected tropical wood species and the subsequent change of colour due to the effect of natural and simulated UV radiation. Measurements were performed on the following three species: zebrano (Microberlinia brazzavillensis), panga panga (Millettia Stuhlmannii) and african padouk (Pterocarpus soyauxii). As surface treatment were used water-based, polyurethane, oil and solvent-based paint. Samples were exposed to simulated UV radiation. The total duration of radiation was 168 hours. After that the colour changes delta E* were measured by using a spectrophotometer. The aim was to compare the different paints used on all woods and their colour change. The thesis also includes research of light permanency of coating exposed to natural UV radiation.
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Olejové povrchové úpravy dřevěných podlah v exteriéru
Jarkovský, Petr
This Bachelor thesis addresses problems associated with the change of surface tex-ture, shade and gloss retention of outdoors wooden floors treated by oil based coating depending on the type of wood used as well as coating composition. The work is sup-ported by practical measurements on specimens obtained from three different wood varieties which were subjected to three different oil surface treatments. Prepared sam-ples were exposed to outdoors weather conditions for a period of 142 days. Continuous-ly during this time laboratory measurements were performed and their results subsequently evaluated.
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