Derya USTAÖMER, Evren ERSOY KALYONCU, Hüseyin KIRCI

Some Properties of Fiberboard Manufactured with Wastes of Kraft Pulp Mill

Bu çalışmada, odun yonga eleme atıklarının ve kraft hamuru elek atıklarının lifsel materyaller olarak orta yoğunlukta lif levha (MDF) üretiminde kullanımının uygunluğu araştırılmıştır. Yonga eleme atıkları, laboratuvar tipi bir rafinörde liflendirilirken; hamur eleme atıkları ise rafinör işlemine uğratılmadan kullanılmıştır. Elde edilen lifsel materyaller ticari liflere %10 ve %30 oranlarında ilave edilmiş ve üre formaldehit (UF) tutkalı kullanılarak lif levha üretimleri gerçekleştirilmiştir. Üretilen bu levhaların su alma (SA), kalınlığına şişme (KŞ) değerleri, yüzey pürüzlülük parametreleri, renk değişim değerleri, eğilme direnci (MOR) ve eğilmede elastikiyet modülü (MOE) gibi bazı özellikleri belirlenmiştir. Bu çalışmanın sonucu olarak, tüm değerlerin, kraft fabrika atıklarının türü ve kullanım oranına bağlı olarak değişim gösterdiği belirlenmiştir. Genel olarak, bu atık materyallerin kullanımının levha özellikleri üzerinde olumlu yönde etkisinin olduğu tespit edilmiştir.

Anahtar Kelimeler:

Liflevha, Hamur lifi, Kraft prosesi, Eleme atıkları, Odun yongaları

Some Properties of Fiberboard Manufactured with Wastes of Kraft Pulp Mill

In this study, it was aimed to investigate the usability of some wastes such as wood chip screening rejects and kraft pulp screening rejects as fibrous materials in the manufacture of medium density fiberboard (MDF). Chip screening rejects were refined with a laboratory type refiner; however, pulp screening rejects were not refined. These materials were added to commercial fibers with the rates of 10%, 30%. Fiberboards were manufactured using urea formaldehyde (UF) adhesive. Some properties of these fiberboards such as water absorption (WA), thickness swelling (TS), surface roughness parameters, color change, modulus of rupture (MOR) and modulus of elasticity (MOE) values were determined. As a result of these, it was found that all values showed different trend depending on rates and types of Kraft mill wastes. Generally, the use of these materials had positive effects on the panel properties.

Keywords:

Fiberboard, Pulp fiber, Kraft process, Screening rejects, Wood chips,

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