Document Type : Research Paper

Authors

1 Faculty Member, Department of Architecture, Islamic Azad University, Zahedan, Iran

2 Ph.D. wood and paper industry, research and innovation center of ETKA organization, Tehran, Iran

Abstract

To study the tensile properties and impact strength in Wood Plastic Composites (WPC) polypropylene as a matrix and teada pine sawdust as reinforcement / filler is used. Ethylene / propylene / Diane / monomer (EPDM) as modified impact resistance with 10, 20 and 30 percent improved impact resistance and maleic anhydride grafted polypropylene (MAPP) at a rate of 3 percent as a fasteners to improve response and polymers and fillers were added to the composite. To evaluate the fracture surface of a structure scanning electron microscope (SEM) was used. The apply of 10 % elastomer and 3 % coupling agent cause to improved of tensile properties and the use of higher levels of elastomer (20 and 30 %) has shown a decreasing trend in these properties. The results showed that PP matrix by adding sawdust to a significant reduction in impact strength of composite than pure PP is observed. An EPDM additive used in all contents of composites PP / sawdust has improved impact strength. Simultaneous use of EPDM and MAPP used a positive effect in tensile properties and impact strength. The apply of EPDM (30%) and 3% (MAPP) has demonstrated the highest level of impact strength. SEM images show that the use of EPDM and MAPP composites will improve the connection of interface.

Keywords

Main Subjects

-Arbelaiz, A., Fernández, B., Ramos, J. A., Retegi, A., Llano-Ponte, R. and Mondragon, I., 2005. Mechanical properties of short flax fibre bundle/polypropylene composites: Influence of matrix/fibre modification, fibre content, water uptake and recycling. Composites Science and Technology, 65 (10) 1582–1592.
-Anuar, H. and Zuraida, A., 2011. Improvement in mechanical properties of reinforced thermoplastic elastomers composite with kenaf bast fibre. Composites: Part B 42 (3) 462–465.
- Bax, B. and Mussig, J., 2008. Impact and tensile properties of PLA/Cordenka and PLA /flax composites. Composites Science and Technology, 68 (7): 1601–1607.
-Bledzki A. K., Faruk, O. and Huque M., 2002. Physico-mechanical studies of wood fiber reinforced composites. Polymer-Plastics Technology and Engineering, 41(3): 435– 451.
-Joshi, S., Drzal, L., Mohanty, A. and Arora, S., 2004. Are natural fiber composites environmentally superior to glass fiber reinforced composites. Composites Part A, 35 (3):371–376.
- Ismail, H., Shuhelmy, S. and Edyham, M., 2002. The effects of a silane coupling agent on curing characteristics and mechanical properties of bamboo fiber filled natural rubber composites. European Polymer Journal, 38 (2): 39–47.
-Kaynak, C., Arikan, A. and Tincer, T., 2003. Flexibility improvement of short glass fiber reinforced epoxy by using a liquid elastomer. Polymer, 44 (8):2433- 2439.
-Kazayawoko, M., Balatinecz, J. and Matuana, L. M., 1999. Surface modification and adhesion mechanisms in wood fiber- polypropylene composites. Journal of Materials Science, 34 (24): 6189–6199.
-Keledi1, G., Sudár1, A., Burgstaller, Ch., Renner1, K., Móczó1, J. and Pukánszky, B., 2012. Tensile and impact properties of three-component PP/wood/elastomer composites. eXPRESS Polymer Letters, 6 (3): 224–236.
- Mantia, F. P. and Morreale, M., 2011. Green composites: A brief review. Composites Part A: Applied Science and Manufacturing, 42(6): 579–588.
- Morreale, M., Scaffaro, R., Maio, A. and La Mantia F. P., 2008. Effect of adding wood flour to the physical properties of a biodegradable polymer. Composites Part A: Applied Science and Manufacturing, 39 (3): 503–513.
-Mutjé, P., Vallejos M. E., Gironès, J., Vilaseca F., López, A., López, J. P. and Méndez, J. A., 2006. Effect of Maleated polypropylene as coupling agent for polypropylene composites reinforced with hemp strands. Journal of Applied Polymer Science, 102 (1): 833–840.
-Oksman, Kristina. And Clemons, Craig., 1998. Mechanical Properties and Morphology of Impact Modified Polypropylene–Wood Flour Composites. Journal of Applied Polymer Science, 67 (2): 1503–1513.
-Ochi, S., 2008. Mechanical properties of kenaf fibers and kenaf/PLA composites. Mechanics of Materials
40 (3): 446–452.
-Park, B. and Balatinecz, J., 1997. Mechanical properties of wood–fiber/toughened isotactic polypropylene composites. Polymer Composite, 18 (1):79–89.
 -panthapulakkal,S, Sain,M. 2006. Injection molded wheat straw and corn stem filled Polypropylene composites. Journal of Polymer Environmental,14 (3): 265-272.
-Panthapulakkal, S., Zereshkian, A. and Sain, M., 2006. Preparation and characterization of wheat straw fibers for reinforcing application in injection molded thermoplastic composites. BioresourceTechnology, 97(2), 265-272.
 -Ruksakulpiwat, Y., Sridee, J., Suppakarn, N. and Sutapun, W., 2009. Improvement of impact property of natural fiber–polypropylene composite by using natural rubber and EPDM rubber. Composites: Part B, 40 (3): 619–622.
- Wang, W., Tang, L. and Qu, B., 2003. Mechanical properties and morphological structures of short glass fiber reinforced PP/EPDM composite. European Polymer Journal 39 (2) 2129–2134.