Isıl İşlemin Odun Özellikleri Üzerine Etkisi

Year 2009, Volume: 5 Issue: 2, 11 - 34, 01.06.2009

Süleyman Korkut Duygu Kocaefe

Abstract

Tarihe baktığımızda ahşap iğneden kilise inşaatına kadar geniş bir kullanım alanı bulmuştur. Ancak

ahşap ile çalışırken nem içeriğindeki değişme sebebiyle anizotropik daralma ve genişleme kombinasyonunda

higroskopik özellikler sergilemesi bazı sakıncalar ortaya çıkarır. Boyutsal stabilitedeki probleme ilaveten

biyolojik saldırılar da önem arz etmektedir. Ahşabı mantar ve böceklere karşı korumak için zehirli kimyasal

maddelerle emprenye edilmesi yaygın olarak kullanılan koruma metotlarından birisidir. Ancak bu şekilde

koruma; diğer organizmalar için zehirli olması, boyutsal stabiliteyi önlememesi veya boyutsal stabilite

sağlayan emprenye metotlarının pahalı olması ve bu maddelerin çevreye etkilerinin sorgulanabilir olması

nedeniyle dezavantajlara sahiptir. Son 20 yılda çevresel farkındalıktaki artma nedeniyle çevreye zararlı

emprenye maddelerinin kullanımında gittikçe artan şekilde kısıtlamalar ortaya çıkmaktadır. Bu durum

keresteyi biyolojik bozunmaya karşı koruyan ve boyutsal stabilitesini arttıran çevreye dost yeni metotların

gelişmesine yol açmıştır.

Bu çalışmada; ısıl işlem uygulaması süresince odunda neler oluyor? ve ısıl işlem uygulaması odun

özelliklerini nasıl etkiliyor? sorularına faydalı cevaplar aranarak ısıl işlem hakkında temel bir bilgi aktarımı

sunulmuştur.

Keywords

Isıl işlem, odun özellikleri, yapışma performansı, biyolojik dayanıklılık

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