Huseyin YORUR, Kadir KAYAHAN, Muhammed Nuri GÜNAY, Suat ALTUN, Belgin ŞEKER

Sarıçam ve doğu ladini odunlarının bazı fiziksel ve mekaniksel özellikleri üzerine sıvı azot işleminin etkileri

Ağaç malzeme, ahşap yapı sektörü, kent mobilyası ve iç mekân tasarımından mobilya sektörüne kadar yaygın olarak kullanılan yenilenebilir bir kaynaktır. Ağaç malzeme, yanma ve biyolojik faktörlere dayanım açısından bazı olumsuz özelliklere sahiptir. Özellikle ahşap yapı ve kent mobilyalarında kullanılan ağaç malzemeler, ürünün ömrünü uzatmak için yanmaya ve biyolojik faktörlere karşı kaplanır ve/veya emprenye edilir. Emprenye işleminde retensiyonun arttırılması yanmaya karşı dayanımı da arttırır. Bu çalışmada sıvı nitrojen uygulamasının retensiyona etkisi incelenmiştir. Sarıçam ve Doğu ladin odunları vakum-basınç metoduyla firetex ile emprenye işlemi öncesi 30 dakika süreyle sıvı nitrojene maruz bırakılmıştır. Sonuçlara göre retensiyon miktarı, doğu ladini ve sarıçam örneklerinde sıvı nitrojen uygulaması ile arttırılmıştır. Ayrıca, sıvı azotun mekanik özellikler üzerinde önemli bir olumsuz etkisi olmadığı görülmüştür. Bu nedenle, sıvı azot muamelesi, odunun emprenye edilebilirliğini iyileştirmek için etkili bir yöntem olarak uygulanabilir.

Anahtar Kelimeler:

Emprenye, Retensiyon, Azot, Firetex, Mekanik mukavemet

The effects of liquid nitrogen treatment on the some physical and mechanical properties of scots pine and oriental spruce wood

The wood materials widely used from wood construction sector, urban furniture and interior design to furniture sector are renewable resource. Wood has some disadvantages regarding durability to combustion and biological factors. To increase service life especially in urban furniture are coated and/or impregnated against to fire and biological factors. Thus, the wood materials used in construction sector should be treated with fire-retardant chemicals. In this study; Scots pine and Oriental spruce wood materials were exposed to liquid nitrogen for 30 minutes before impregnated with Firetex by using pressure-vacuum method. According to the results, amount of retention in Oriental spruce and Scots pine samples have been increased with liquid nitrogen treatment. Additionally, it was seen that the liquid nitrogen operation had not significant adverse effect on the mechanical properties. Therefore, the liquid nitrogen treatment can apply effectively as a method to improve the impregnability of the wood.

Keywords:

Retention, Impregnation, Nitrogen, Firetex, Mechanical strength,

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