PROTECTIVE EFFECT OF COATING ON MECHANICAL PROPERTIES OF WOOD MATERIALS EXPOSED TO NATURAL WEATHERING
| Autor: | Özlem ÖZGENÇ, Ümit C. YILDIZ, Sibel YILDIZ |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Pro Ligno, Vol 11, Iss 1, Pp 26-31 (2015) |
| Druh dokumentu: | article |
| ISSN: | 1841-4737 2069-7430 |
| Popis: | The objective of this study was to investigate the protection effect of acrylic coating systems on mechanical properties of some wood species exposed to natural weathering. Beech (Fagus orientalis L.), scots pine (Pinus sylvestris L.) and oriental spruce (Picea orientalis L.) wood samples were coated with a new generation of acrylic resin including two different UV absorbers (organic and inorganic) and subjected to natural weathering tests for 15 months in Uzungöl and Hıdırnebi plateau located in the north of Turkey. Changes in mechanical (compression strength parallel to fibers, static bending strength and modulus of elasticity) properties were investigated and compared with non-coated wood samples. The result of this research demonstrated that the mechanical strength losses of specimens coated with acrylic resin decreased after the 15-month natural weathering test. Under outdoor conditions, the best protection is provided by the organic UV absorber for oriental spruce and by the inorganic UV absorber for oriental beech. The influence of acrylic resin including UV absorbers (organic and inorganic types) were similar to each other for scots pine. The wood samples had higher rates of mechanical strength loss in Uzungöl plateau when compared to the ones from Hıdırnebi plateau. |
| Databáze: | Directory of Open Access Journals |
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