Drvna industrija, Vol. 68 No. 2, 2017.
Original scientific paper
https://doi.org/10.5552/drind.2017.1533
Physical, Mechanical and Bonding Performance of Calabrian Pine (Pinus brutia Ten.) as Influenced by Heat Treatment
Ergün Güntekin
; Department of Forest Products Engineering, Faculty of Forestry, Suleyman Demirel University, Isparta, Turkey
Tuğba Yilmaz Aydin
; Department of Forest Products Engineering, Faculty of Forestry, Suleyman Demirel University, Isparta, Turkey
Birol Üner
; Department of Forest Products Engineering, Faculty of Forestry, Suleyman Demirel University, Isparta, Turkey
Abstract
In this study, the effects of heat treatment on some physical, mechanical, wettability and bonding properties of Calabrian pine (Pinus brutia Ten.) were investigated. Specimens were exposed to heat under atmospheric pressure at four different temperatures (120, 150, 180, 210 °C) and three different time levels (2, 5, 8 hours). Weight loss, bending strength (MOR), modulus of elasticity (MOE) in bending, Young’s modulus in compression, compression strength parallel to grain, contact angle, and bonding performance using shear tests were evaluated. All of the properties of the specimens tested were affected by heat treatment of different intensity. As a result, softer treatments yielded some increase in mechanical properties, but increase of time and temperature resulted in significant decrease in mechanical properties with decreasing mass loss. Contact angle measurements before and after treatment indicated a significant increase in wood hydrophobicity. Shear strength of the specimens were diminished when time and temperature of heat treatment were increased.
Keywords
Calabrian pine; heat treatment; mechanical properties; bonding
Hrčak ID:
183467
URI
Publication date:
30.6.2017.
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