The Effect of Press Parameters on the Physical and Mechanical Properties of Cement-Bonded Particleboards Produced from Veneer Wastes

Yıl 2023, , 300 - 305, 30.09.2023

Uğur Aras , Hüsnü Yel

https://doi.org/10.35229/jaes.1296776

Öz

This study aims to investigate the effect of press temperature and time changes on the physical and mechanical properties of cement-bonded particleboards produced using poplar veneer wastes (Populus tremula L.). In this study, single-layer cement-bonded particleboards with a target density of 1200 kg/m3 and a size of 500 x 500 x 10 mm3 were produced using 5 different pressing parameters. The physical (moisture content, density, water absorption, and thickness swelling) and mechanical (modulus of rupture, modulus of elasticity, internal bond strength, and s screw withdrawal strength) properties of the produced boards were investigated. According to the results obtained, the changes in press time and temperature did not cause a significant change in the water absorption values, while the increase in the pressing time affected the thickness swelling values positively. While the mechanical properties increased with the increase of the pressing time, values suitable for the standard were obtained in all board groups. In addition, it was determined that the most suitable time for production was 24 hours and the temperature application did not have a significant effect on the board properties

Anahtar Kelimeler

Cement bonded particleboards, veneer wastes, press parameters, Physico-mechanical properties

Kaplama Atıklarından Üretilen Çimentolu Yongalevhaların Fiziksel ve Mekanik Özelliklerine Pres Parametrelerinin Etkisi

Öz

Bu çalışmanın amacı, kavak kaplama atıkları (Populus tremula L.) kullanılarak üretilen çimentolu yongalevhaların fiziksel ve mekanik özelliklerine pres sıcaklık ve süre değişiminin etkisinin araştırılmasıdır. Bu çalışmada, 5 farklı presleme parametresi kullanılarak 1200 kg/m3 hedef yoğunluğa ve 500 x 500 x 10 mm3 boyutlarına sahip tek tabakalı çimentolu yongalevhalar üretilmiştir. Üretilen levhaların fiziksel (rutubet içeriği, yoğunluk, su alma ve kalınlık artımı) ve mekanik (eğilme direnci, eğilmede elastikiyet modülü, yüzeye dik çekme direnci ve vida tutma direnci) özellikleri incelenmiştir. Elde edilen sonuçlara göre, pres süresi ve sıcaklıktaki değişimler su emme alma önemli bir değişikliğe neden olmazken, presleme süresindeki artış kalınlık artımı değerlerini olumlu yönde etkilemiştir. Pres süresinin artmasıyla mekanik özellikler artarken, tüm levha gruplarında standarda uygun değerler elde edilmiştir. Ayrıca üretim için en uygun zamanın 24 saat olduğu ve sıcaklık uygulamasının levha özellikleri üzerinde önemli bir etkisinin olmadığı belirlenmiştir.

Anahtar Kelimeler

Çimentolu yongalevhalar, kaplama atıkları, pres parametreleri, fiziko-mekanik özellikler

Kaynakça

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