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In this study, which aims to improve the waterproofing performance of Calabrian pine (Pinus brutia Ten.) wood by the thermal bio-oil dipping technique, it was used castor oil (Ricinus communis L.), linseed oil (Oleum linii), and mixed oil (50% castor oil + %50 linseed oil), and the thermal method (hot-cold dipping method). Retention amount, water absorption, water repellent activity, and volumetric swelling properties of the samples were determined. Among the oils, the highest retention amount, 42.90%, was obtained in wood samples treated with flax oil. The water uptakes of the treated samples were lower than that of the control samples. The lowest water absorption values was found at 19.20% in the treatment with linseed oil. For water-repellent activity, better results were obtained in the linseed oil treatment than in the castor oil and mixed treatments. All treated wood samples showed a significant hydrophobic property. For all three oils, the volumetric swelling values of the treated samples were lower than that of the control samples. All these show that the hot-cold bio-oil dipping treatment improves the waterproofing performance of the Calabrian pine wood, which is given a hydrophobic qualification by positively affecting these physical properties. According to these results, it would be beneficial to apply thermo-bio-oil immersing treatment before use in environments that will be exposed to the effect of water/humidity, for Calabrian pine wood. For this reason, it would be suggested to apply Calabrian pine sapwood with the thermal bio-oil dipping process in the production of final waterproof wood material for indoor use. |
