The effects of heat treatment on the modulus of rupture and modulus of elasticity of Scots pine (Pinus sylvestris L.) wood.

Year 2013, Volume: 8 Issue: 1, 1 - 6, 01.02.2013

Fatih Yapıcı Raşit Esen Hüseyin Yörür Erkan Likos

Abstract

In this study, first of all, test samples prepared from Scots pine (Pinus sylvestris L.) wood and they were exposed to heat treatment at 130, 145, 160, 175, 190 and 205ºC for 3, 6, 9, 12 hours. Modulus of rupture (MOR) and modulus of elasticity (MOE) values of samples were determined. They were evaluated by multiple variance analysis. It can be said that the effects of heat treatment applications have on the MOR and MOE values of wood samples.

Keywords

Scots Pine, Heat treatment, Modulus of rupture, Modulus of elasticity, ,

Isıl İşlemin Sarıçam Odununu Üzeride Eğilme Direnci Ve Elastikiyet Modülüne Etkilileri

Abstract

Bu çalışmada tüm test örnekleri sarıçam ağaç malzemeden hazırlanmıştır ve örnekler 130,145,160,175,190,205ºC sıcaklıkta 3,6,9,12 saat ısıl işleme maruz bırakılmıştır. Elastikiyet modülü(MOE) ve eğilme direnci(MOR) değerleri belirlenmiştir. Bu değerler çoklu varyans kullanılarak değerlendirilmiştir. Isıl işlem uygulamalarının ağaç malzemenin MOR ve MOE değerleri üzerine etkisinin olduğu söylenebilir.

Keywords

Sarıçam, , Isıl işlem, , Eğilme direnci, , Elastikiyet modülü, ,

References

• Johansson, L.S., Campbell, J.M., Koljonen, K., and Stenius, P., (1999). Appl. Surf.Sci. 144–145:92.
• Johansson, L.S., (2002). Mikrochim. Acta; 138: 217.
• Johansson, L.S., Campbell, J., Koljonen, K., Kleen, M., and Buchert, J., (2004). Surf.Interface Anal. 36:706.
• Koljonen, K., Osterberg, M., Johansson, L.S., Stenius, P., (2003). Colloids Surf., 228:143.
• Fardim, P., Gustafsson, J., von Schoultz, S., Peltonen, J., and Holmbom B., (2005). Colloids Surf., 255: 91.
• Li, K. and Reeve, D.W., (2004). J. Wood Chem. Technol. 24, (3):183.
• Johansson, L.S. and Campbell, J.M., (2004). Surf. Interface Anal. 36:1018.
• Kocaefe, D., Poncsak, S., and Boluk, Y., (2008). Effect of thermal treatment on the chemical composition and mechanical properties of birch and aspen, BioRes.3(2), 517-537.
• Mazela, B., Zakrzewski, R., Grzeszkowiak, W., Cofta, G., Bartkowiak, M., (2004). Resistance of thermally modified wood to basidiomycetes. Wood Technology, 7(1): 253–62.
• Militz, H., (2002). Thermal treament of wood. European processes and their backround. International Research Group on Wood Preservation. Doc. No. IRG/WP 02-4021.
• Esteves, B., Velez Marques, A., Domingos, I., and Pereira, H., (2007). Infuluence of Steam Heating on the properties of pine and ecualypt wood. Wood Sci. And Technol. 41, 193-207
• Esteves, B., Domingos I., and Pereira, H., (2008). Pine wood modification by heat treatment in air. Bioresources, 3 (1), 142- 154
• Jamsa, S., and Viitanemi, P., (2001). Heat treatment of wood- Better durability without chemicals. In:Proceeding of special seminar held in Antibes. France.
• Wang, J., and Copper, P., (2005). Effect of oil type, temperature and time on moisture properties of hot oil-treated wood. Holz Roh-Werkst 63, 417-422.
• Akyıldız, H.M. and Ateş, S., (2008). Effect of heat treatment on equilibrium moisture content (EMC) of some wood species in Turkey. Resc. Journ. of Agriculture an Biological Scien. 4 (6): 600-665.
• Fengel, D. and Wegener, G., (1984). Wood: Chemistry, Ultrastructure, Reactions.Walter de Gruyter; Berlin, Germany.
• Zaman, A., Alen, R., and Kotilainen, R., (2000). Thermal behavior of Pinus sylvestris and Betula pendula at 200–230°C.” Wood Fiber Sci.;32:138–143.
• TS 2474, (1976). Wood-determination of ultimate strength in static bending. TSE, Ankara.
• TS 2478, (1976). Wood-determination of modulus of elasticity in static bending. TSE, Ankara.