Farklı ağaç türlerinden bağlayıcı olarak polietilen kullanılarak üretilen kontrplakların bazı mekanik özellikleri

Özet Çalışmanın amacı: Kontrplak sektöründe kullanılan formaldehit esaslı reçineler yerine bağlayıcı olarak atık polietilen kullanılmasıyla üretilmiş levhaların bazı mekanik özelliklerinin araştırılması amaçlanmış ve farklı ağaç türlerinden üretilmiş levhalar için optimum polietilen miktarları belirlenmeye çalışılmıştır. Çalışma alanı: Bu çalışma, Trabzon’daki Karadeniz Teknik Üniversitesi Orman Endüstri Mühendisliği Bölümü Pilot tesisinde yapılmıştır.Materyal ve Yöntem: Kayın (Fagus Orientalis Lipsky), kızılağaç (Alnus glutinosa subsp. barbata) ve sarıçam (Pinus sylvestris L.) kaplamalar, polietilen kontrplakların üretiminde kullanılmıştır. Üç farklı polietilen miktarı seçilmiştir (160, 200 ve 240 gr/m2). Üretilen levhaların y TS EN 323-1, çekme makaslama direnci TS EN 314-1, eğilme direnci ve elastikiyet modülü ise TS EN 310 standartlarına göre belirlenmiştir. Sonuçlar: En iyi mekanik direnç değerleri, kayın ve kızılağaç için 200 gr/m2 polietilen miktarı kullanılarak üretilen levhalardan elde edilmiştir. Ayrıca, sarıçam için en iyi değerler ise, 160 gr/m2 polietilen miktarı kullanılarak üretilen levhalarda bulunmuştur. Araştırma vurguları: Bu çalışma, kontrplak endüstrisinde uygulanmasıyla birlikte hem polietilen atıkların geri dönüşümü sağlanabilir, hem de levhalardaki formaldehit salınımı önlenebilir. Polietilen ile üretilen kontrplakların atıkları, ahşap plastik kompozit panellerin üretiminde de kullanılabilir.

Some Mechanical Properties of Nylon Composite Plywood Produced from Different Wood Species

AbstractAim of study: Investigation of some mechanical properties of panels produced using polyethylene waste as adhesive instead of formaldehyde-based resins used in plywood was aimed and polyethylene amount was tried to determine for plywood produced from different wood species. Area of study: This study was conducted at the Pilot Facility of Department of Forest Industry Engineering, Karadeniz Technical University in Trabzon, Turkey.Material and Methods: Beech (Fagus Orientalis Lipsky), alder (Alnus glutinosa subsp. barbata) and Scots pine (Pinus sylvestris L.) veneers were used to produce polyethylene plywood. Three different polyethylene amounts was used (160, 200 and 240 gr/m2). Density, shear strength, bending strength and modulus of elasticity of plywood panels were determined according to TS EN 323-1, TS EN 314-1 and TS EN 310, respectively.Main results: The best mechanical strength values for beech and alder were obtained from panels produced using 200 gr/m2 polyethylene amounts. Moreover, these values for Scots pine were found in panels produced using 160 gr/m2 polyethylene amounts. Research highlights: When this study applies in the plywood industry, can provide to both recycle polyethylene waste and prevent formaldehyde release. Polyethylene plywood waste can be used production of wood plastic composite panels.

Keywords:

Nylon waste, Composite Plywood, Mechanical properties, Wood species,

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