Surface densified wood could be used for floorings and in such a cases it should be protected with surface coatings. Therefore, we investigated wettability of surface densified wood with some liquids and coatings and their uptake into surface densified substrates. As a control liquid water was applied and the test liquids were oil for surface finishing of wood, acrylic water-borne lacquer, polyurethane coating, liquefied wood and a coating made from liquefied wood. At first, spruce wood was liquefied and then the liquefied wood based coating was prepared. Contact angles on surface densified wood were dependent on ta coating type, and it was the same for penetration of test liquids and coatings. We found out, that the surface densified wood is the best wetted by liquefied wood and by the liquefied wood based surface coating, followed by acrylic water-borne lacquer. The same order was determined also for penetration of liquids and coatings into surface densified wood. The latter two surface coatings are by our opinion the most appropriate for protection of surface densified wood, when used for floorings.
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