Effect of waste MDF powder on some physical and mechanical properties of blend of low density polyethylene and high density polyethylene

Abstract

Scientific studies on the use of industrial waste in the production of wood-plastic composites (WPCs) have increased in recent years. The increased emphasis placed on recycling in some countries has increased this interest. Studies on the reuse and economic recovery of industrial waste, particularly within the scope of the zero waste project launched in Turkey, are attracting significant interest. Based on this perspective, this study investigated the utilization of waste Medium Density Fiber board (MDF) dust generated in furniture factories as a filler in the production of wood-plastic composite materials. In the study, wood-plastic composite panels were successfully produced by adding 10%, 25%, and 40% MDF dust to a blend of recycled low-density polyethylene (R-LDPE) and virgin high-density polyethylene (V-HDPE). The blend of R-LDPE and V-HDPE polymers was made homogeneously in the extruder machine. Some physical and mechanical properties of the resulting composites were investigated. According to the obtained data, as the amount of filler in the composite increased, the flexural strength, deformation at bending, tensile strength, elongation at break, molding shrinkage, and coefficient of linear thermal expansion decreased. However, on the contrary, density, flexural modulus and tensile modulus increased.

Keywords

• WPC
• Mechanical properties
• MDF dust
• Furniture factory waste

Alçak yoğunluklu polietilen ve yüksek yoğunluklu polietilen karışımının bazı fiziksel ve mekanik özellikleri üzerine atık MDF tozunun etkisi

Abstract

Odun plastik kompozitlerin (OPK) üretilmesinde, endüstriyel atıkların kullanımı üzerine yapılan bilimsel çalışmalar son yıllarda artmıştır. Geri dönüşüm konusuna bazı ülkelerin daha fazla önem vermesi bu ilgiyi artırmıştır. Özellikle Türkiye’de başlatılan sıfır atık projesi kapsamında, endüstriyel atıkların yeniden değerlendirilmesi ve ekonomiye kazandırılması konusundaki çalışmalar ilgi çekmektedir. Bu noktadan hareketle, bu çalışmada, mobilya fabrikalarında oluşan atık orta yoğunluklu lif levha (MDF) tozunun dolgu maddesi olarak odun-plastik kompozit malzemelerin üretiminde kullanılabilirliği araştırılmıştır. Çalışmada, geri dönüştürülmüş alçak yoğunluklu polietilen (G-AYPE) ile yeni yüksek yoğunluklu polietilen (Y-YYPE) karışımına %10, %25 ve %40 oranlarında MDF tozu eklenerek odun plastik kompozit plakalar başarılı şekilde üretilmiştir. G-AYPE ile Y-YYPE polimerlerin karışımı extruder makinesinde homojen bir şekilde yapılmıştır. Elde edilen kompozitlerin bazı fiziksel ve mekanik özellikleri araştırılmıştır. Elde edilen verilere göre; kompozit içerisindeki dolgu maddesi oranı arttıkça, eğilme direnci, eğilmede deformasyon, çekme direnci, kopmada uzama, kalıplama daralması ve doğrusal termal genleşme katsayısı azalmıştır. Ancak, bunun aksine yoğunluk, eğilmede elastikiyet ve çekmede elastikiyet artmıştır.

Keywords

• OPK
• Mekanik özellikler
• MDF tozu
• Mobilya fabrikası atıkları

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