Dergiler / Düzce Üniversitesi Orman Fakültesi Ormancılık Dergisi / 2012 / Cilt: 8 - Sayı: 1
Masif ve Lamine Ağaç Malzemelerin Isıl Genleşme Katsayıları Üzerine Karşılaştırmalı Bir Çalışma
- Sayfa
- 77–83
- DOI
- —
Özet
Bu çalışmada, kayın (Fagus orientalis L.), kavak (Populus x euramericana I-214) ve okaliptüs
Abstract
In this study, the coefficients of thermal expansion of solid wood and laminated wood materials preparedfrom beech (Fagus orientalis L.), poplar (Populus x euramericana I-214) and eucalyptus (Eucalyptus grandisW. Hill ex Maiden) species were determined. The experiments were made on the sapwood and heartwood ofsolid wood material, separately. Laminated wood materials were produced from 3 mm thickness rotary peeledveneer using UF (urea-formaldehyde) and PF (phenol-formaldehyde) adhesive. The tests were performedbetween -10 and +40 ºC temperature interval. In tangential direction, the lowest coefficient of thermal expansionwas measured on the poplar heartwood (1.88x10–5 ºC–1) and the highest coefficient of thermal expansion wasmeasured on the laminated wood made from eucalyptus used PF (4.66x10–5 ºC–1). The results showed thatlaminated materials produced from poplar wood has higher coefficient of thermal expansion than solid poplarwood. The differences between solid and laminated wood from the beech and eucalyptus weren’t statisticallysignificant.