PROPERTIES OF WOOD SURFACE COATED WITH OIL WAX
Keywords:
hard wax oil; wood surface; water permeability; contact angle; gloss.Abstract
The research is aimed at establishing the changes in colour, gloss, hydrophobicity, and roughness of wood surfaces after treatment with hard wax oil, as well as the number of layers and the appropriate amount of liquid system required to achieve an effective coating. The water permeability of the coating was used as a criterion. Commercial hard wax oil was applied to the wood of spruce (Picea abies Karst.), aspen (Popolus tremula L.), beech (Fagus sylvatica L.), ash (Fraxinus excelsior L.), and European oak (Quercus robur L.). Changes in the colour of the wood substrates were evaluated visually. Gloss was measured using a gloss meter in accordance with ISO 2813:2014. Changes in roughness were assessed through the parameters Rz and RSm. Measurements were conducted with a contact surface roughness tester. Hydrophobicity was evaluated using the sessile drop method. It was found that a two-layer coating is optimal, and that the density, composition, and structure of the substrate influence the amount of liquid system required to form a coating with uniform colour and gloss. The coating was classified as unstable. Changes in colour, roughness, gloss, and hydrophobicity of the treated surfaces were established. No raising of the wood grains was found. The characteristics of the substrate had a significant impact on the coating properties.
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Copyright (c) 2025 Krasimira Atanasova, Dimitar Angelski, Dobriyan Dobriyanov
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