| Summary: In this study, it has been investigated how some wood preservative varnishes used commercially in the market protect wood from harmful factors and for how long. First of all, structure, properties, weak and strong sides of wood are examined. Afterwards, the factors that break down the wood and the methods to combat them were given. Five different commercial protective varnishes of three different companies were applied to the samples obtained from the oriental beech (Fagus orientalis L.) and scots pine (Pinussylvestris L.)wood by applying a brush to the catalog instructions. The test samples treated with varnishesand the control samples were subjected to artificial outdoor and indoor tests. In the test and control samples, color change, surface roughness, water absorption and dimensional stability, adhesion strength, compression strength parallel to fiber and fungal decay tests were carried out according to the relevant standards. In general, the best results were obtained from E varnish; this varnish yielded better results than other varnishes, especially in fungal decay and water absorption experiments. Although there are some performance differences between varnishes, or between test and control samples; in general, it was determined that they could not prevent the weight loss of wood samples after the fungus decay test and could not provide the wood protection standards.
Key Words:Wood preservative varnish, varnish, solvent based, water based, surface treatment. |
