International Journal of Advanced Materials Research
Articles Information
International Journal of Advanced Materials Research, Vol.2, No.4, Jul. 2016, Pub. Date: Jul. 15, 2016
Mechanical Properties of Recycled Polypropylene Mixed with Glass Fibers
Pages: 72-79 Views: 2964 Downloads: 2078
[01] Ayman M. M. Abdelhaleem, Mechanical Design and Production Engineering Department, Faculty of Engineering, Zagazig University, Zagazig, Egypt.
The main objective of this research is to study the effect of adding glass fibers, GF, into recycled polypropylene, RPP, using the injection moulding process. The GF were mixed mechanically with the RPP in 10%, 20%, and 30% by weight. The mechanical properties of recycled polypropylene reinforced with glass fibers were investigated using tensile, impact, wear, and hardness tests. The melt flow indexes (MFI) of the recycled polypropylene with and without the glass fibers contents are examined. The results showed that, by adding GF to the RPP by 10%, 20%, and 30%wt to the RPP, the tensile strength are increased from 21 N/mm2 to 26 N/mm2 (i.e. 23.8%), 25 N/mm2 (i.e. 19%), 29 N/mm2 (i.e. 38%) and to 32 N/mm2 (i.e. 52.38%) respectively. Both of the modulus of elasticity and the hardness were increased as the fibers contents were increased in the RPP. Impact un-notched strength decreased with increasing of the GF in the RPP. The wear test results showed that, for load of 1500g the weight loss was decreased for RPP with 20% GF to be 0.0357g, when compared with 0.0548g for RPP, i.e. 34.8% improving against wear. As the GF was increased in the RPP matrix, the MFI was reduced. Scanning Electron Microscope (SEM) observations of the worn surfaces of the RPP material with GF detects interference and the adhesion between the RPP and GF which would lead to the improving of both of the tensile strength and the wear resistance.
Polypropylene, Glass Fibres, Mechanical Properties, Wear Resistance, Melt Flow Index
[01] Erwin Burkle et al, "Injection Moulding of long glass fiber reinforced pp", Translated from Kunststoffe plastic Europe, pp, 47-50, 3/2003.
[02] Loredana Incaranato, Paola Scarfato, and Domenico Acierno, "Rheological and Mechanical Properties of Recycled Polypropylene, Polymer Polypropylene Engineering and Science", Vol. 39, No. 4, April 1999.
[03] Sylvie Bertin, Jean-Jacques Robin, "Study and characterization of virgin and recycled LDPE/PP blends", European Polymer Journal 38, 2255–2264, 2002.
[04] Cavalieri F and Padella F, “Development of composite materials by mechano chemical treatment of post-consumer plastic waste”, Waste Manage, Vol. 22, p. 913, 2002.
[05] Cabrera N, “Recyclable All-Polypropylene Composites: Concept, Properties and Manufacturing”, Ph D Thesis, School of Engineering and Materials Science, Queen Mary University of London, UK, p 177, 2004.
[06] AbdulKadir G, Ahmet Ö,and Emin Ö, “Experimental investigation of the effect of glass fibres on the mechanical properties of polypropylene (PP) and polyamide 6 (PA6) plastics”, Materials & Design, Vol. 27, Issue 4, pp 316-323, 2006.
[07] Nizar Jawad Hadi, Najim A. Saad, Zainab A. A Saadi, "Study the Rheological Behaviour of PP-Runner Waste Blends towards using for Medical Syringes Production", IJET Vol. 3 No.10, Oct., 2013.
[08] Chuan W, Li L. S. and Jin P. O., “Experimental Study on the Corrosion Resistance of GFRPP Rebar in Alkali, Acid and Salt Solution” Advanced Materials Research, Vol. 146–147, pp 1356-1360, 2011.
[09] Ota W. N., Amico, S. C. & Satyanarayana, K. G., "Studies on the combined effect of injection temperature and fiber content on the properties of polypropylene-glass fiber composites", Composites science and technology, Vol. 65(6), pp. 873-881, 2005.
[10] Rohan Muni Bajracharya, Allan C. Manalo, Warna Karunasena, Kin-tak Lau, "Experimental and theoretical studies on the properties of injection moulded glass fiber reinforced mixed plastics composites", Composites: Part A 84 393–405, 2016.
[11] M. A. Rafiq, B. Saleem, M. Ajmal and M. Y. Anwar, "Effect of Glass Fibers Reinforced Polypropylene" JFET 19, Journal of Faculty of Engineering & Technology, 125-134, 2012.
[12] Titow W. V., and Lanham B. J, “Reinforced thermoplastics”, Elsevier Applied Science Publishers, London, 1974.
[13] Yu Z, Brisson J., and A. Ait-Kadi A., “Prediction of Mechanical Properties of Short Kevlar Fiber-Naylon–6,6 Composites”, Polymer Composites, Vol. 15, pp 64–73, 1994.
[14] Lee S. C, Yang D. Y, Ko J and Youn J. R, “Effect of Compressibility on Flow Field and Fiber Orientation During the Filling Stage of Injection Molding”, J Mater Process Technol, Vol. 70, pp 83–92, 1997.
[15] Badin Pinpathomrat, Suchalinee Mathurosemontri, Putinun Uawongsuwan, Supaphorn Thumsorn, Hiroyuki Hamada, "Study on adhesive property of insert injection molded glass fiber reinforced polypropylene composites", Energy Procedia 89 (2016) 291–298.
[17] Paragon Plastics Santa Ana, "Material identification Guide" PARAGON PLASTICS.
[18], "how to identify plastic material".
[19] Http://,
[20] ASTM Standard reference, "D638".
MA 02210, USA
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