In this experiment a set of wood samples has been hydrothermally modified and then coated, to test their performance during outdoor exposure. The aim of this work is to evaluate the coatings properties in terms of their hydrophobic properties, the changes of wood colour, and formation of checks on the surface of samples. The wood used in this research is aspen (Populus tremula), which has been thermally treated at the following conditions: 160°C for 3 hours, and 170°C for 1 hour. Two experimental coatings have been prepared, to compare them with commercial products. The samples have been coated with two or three layers. The first layer is different for each sample, only the external layer is the same for all the samples. Coatings were applied avoiding the formation of a visible film on the wood surface.
Keywords: wood surface, coatings, outdoor weathering, durability
Authors
Sansonetti E.
Latvian State Institute of Wood Chemistry, Riga, Latvia
Cirule D.
Andersons B.
Andersone I.
Grinins J.
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