Odun-plastik kompozitlerin termal ve yanma özellikleri üzerine borlu bileşiklerin etkisi

Öz

Bu çalışmada, atık lignoselülozik maddelerle üretilen odun plastik kompozitlerin termal özellikleri ve yangına karşı dirençleri araştırılmıştır. Bu amaç için lignoselülozik atıklar, yüksek yoğunluklu polietilen (YYPE), sodyum borat (boraks) ve borik asit kullanılmıştır. Kompozit malzemesinin üretimi aşamasında çift vida ekstruder kullanılmıştır. Elde edilen granül malzeme 175 °C’de preste preslenerek levha haline getirilmiştir. Yapılan testlertde farklı oranlarda odun plastik kompozitlere eklenen borik asit ve boraks maddelerinin termal gravimetrik analiz (TGA), yatay yanma ve limit oksijen indeks (LOI) sonuçları üzerine etkileri araştırılmıştır. Elde edilen sonuçlara göre borlu bileşiklerin miktarı arttıkça kompozit malzemede bulunan lignoselüloziklerin ve plastik malzemenin yanma derecelerinin (°C) yükseldiği anlaşılmıştır. Ayrıca kompozitlere eklenen borlu madde miktarı arttıkça yatay yanma hızının düştüğü anlaşılmıştır.

Anahtar Kelimeler

• Yangın geciktiriciler,Odun Plastik kompozit,Termal özellikler,Borlu bileşikler

Effect of boron compounds on the thermal and combustion properties of wood-plastic composites

Öz

In this study, the thermal properties and fire resistances of the wood plastic composites produced with waste lignocellulosic materials were investigated. For this purpose, lignocellulosic waste, high density polyethylene, (HDPE) sodium borate (borax) and boric acid was used to produce the wood-plastic composites. A twin-screw extruder was used during the production of the wood plastic composites. The produced composite granule was pressed at 175 °C hot press. The effects of boric acid and borax added to wood plastic composites were investigated with the thermal gravimetric analysis (TGA), the horizontal burning rate and the limiting oxygen index (LOI). According to the results, it was understood that as the amount of the boron compounds was increased, the burning degree (°C) of the composite material increased. Furthermore, the using of the boric acid and sodium borate in the production of the wood plastic composite decreased burning speed.

Anahtar Kelimeler

• Fire retardants,Wood plastic composite,Thermal properties,Boron compounds

Kaynakça

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