Effect of black pine sawdust on the mechanical properties of PP composites

Yıl 2018, Cilt: 1 Sayı: 1, 38 - 45, 28.06.2018

Nasır Narlıoğlu , Nihat Sami Çetin , Mehmet Hakkı Alma

https://doi.org/10.33725/mamad.433532

Cited By: 8

Öz

Today studies on the recycling of
waste materials increasingly gaining importance and increasing with the growing
sensitivity to the environment. In this study, the changes in the mechanical
properties of composite materials produced by adding the black pine sawdust
with the polypropylene polymer matrix at different ratios were investigated. For the
production of composite, black pine saw dust mixed with PP polymer and then,
they were converted into pellets using twin-screw extruder and combined
pelletizer. The obtained pellets were molded into composite boards in 250 x 250
x 2 mm dimensions via hot press molding technique. Then tensile, bending and
impact resistance tests of composite boards produced were carried out according
to ASTM standards. According to the results of the mechanical tests, the
highest tensile strength value was found for the composite sample of 10% wood
flour loaded composite, while the highest bending strength was found for the
composite with 50% wood flour. In addition, the highest impact resistance was
obtained for the 20% wood flour added sample among all composites. 

Anahtar Kelimeler

black pine, sawdust, PP, composites, mechanical properties

Karaçam testere talaşının polipropilen kompozitlerin mekanik özelliklerine etkisi

Öz

Günümüzde
çevreye olan duyarlılıktaki artış ile birlikte atık maddelerin geri
dönüştürülebilme konuları üzerine araştırmalar yapılmaktadır. Bu çalışmada polipropilen (PP) polimer matrise ilave edilen farklı oranlardaki karaçam testere talaşından elde
edilen kompozit malzemelerin mekanik özelliklerindeki değişiklikler incelenmiştir.
Kompozit üretimi için karaçam testere talaşı ile PP polimer matrisi çift
burgulu ekstruder kullanılarak kompozit pelletleri formuna dönüştürülmüştür.
Elde edilen pelletlerden sıcak pres kalıplama tekniği ile 250x250x2 mm
ebatlarında kompozit levhalar üretilmiştir. Daha sonra üretilen kompozit
levhaların ASTM standartlarına göre çekme, eğilme ve darbe direnci testleri
yapılmıştır. Mekanik test sonuçlarına göre en yüksek çekme direnci değeri %10
odun unu ilaveli kompozit örneğinde, en yüksek eğilme direnci ise %50 odun unu
ilaveli kompozit örneğinde tespit edilmiştir. Ayrıca kompozitler arasında en
yüksek darbe direnci, %20 odun unu ilaveli kompozit örneğinde elde edilmiştir.

Anahtar Kelimeler

karaçam, testere talaşı, PP, kompozit, mekanik özellikler

Kaynakça

• Ashori, A. (2008). Wood–plastic composites as promising green-composites for automotive industries, Bioresource Technology, 99(11): 4661-4667.
• ASTM, D638. (2001). Standard test methods for tensile properties of plastics, American Society for Testing and Materials.
• ASTM, D790. (2003). Standard test methods for flexural properties of unreinforced and reinforced plastics and electrical insulating materials, American Society for Testing and Materials.
• ASTM, D256. (2005). Standard test methods for impact resistance of plastics and electrical insulating materials, American Society for Testing and Materials.
• ASTM, D4703-10. (2010). Standard practice for compression molding thermoplastic materials into test specimens, plaques, or sheets, American Society for Testing and Materials.
• Bhaskar, J., Haq, S., Pandey, A., & Srivastava, N. (2012). Evaluation of properties of propylene-pine wood plastic composite, Journal of Materials and Environmental Science, 3(3): 605-612.
• Bromhead, A. (2003). Reducing wood waste in furniture manufacture, Fauna & Flora International, Cambridge, UK.
• Caulfield, D.F., Clemons, C., Jacobson, R.E., & Rowell, R.M. (2005). 13 Wood Thermoplastic Composites. Handbook of wood chemistry and wood composites: 365.
• Hull, D., & Clyne, T. (1996). An introduction to composite materials, Cambridge University Press, UK, 326 s.
• Klyosov, A.A. (2007). Wood-plastic composites, John Wiley & Sons, Inc., Hoboken, New Jersey, 720s.
• Kumar, R., Obrai, S., & Sharma, A. (2011). Chemical modifications of natural fiber for composite material, Der Chemica Sinica, 2(4): 219-228.
• Mallick, P.K. (2007). Fiber-reinforced composites: materials, manufacturing and design, CRC press, USA, 638 s.
• Pritchard, G. (2004). Two technologies merge: wood plastic composites, Reinforced Plastics, 48(6): 26-29.
• Schwarzkopf, M.J., & Burnard, M.D. (2016). Wood-Plastic Composites-Performance and environmental impacts. Environmental impacts of traditional and innovative forest-based bioproducts, Springer, pp. 19-43.
• Sofuoğlu, S.D., & Kurtoğlu, A. (2006). Masif ağaç malzemenin işlenmesinde fire oranları. Dumlupınar Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 11: 189-204.
• Smith, P.M., & Wolcott, M.P. (2006). Opportunities for wood/natural fiber-plastic composites in residential and industrial applications, Forest Products Journal, 56(3): 4-11.
• Stark, N.M., & Matuana, L.M. (2004). Surface chemistry and mechanical property changes of wood-flour/high-density-polyethylene composites after accelerated weathering, Journal of Applied Polymer Science, 94(6): 2263-2273.