AUTHORS: Lenka Hylova, Ales Mizera, Miroslav Manas, David Manas, Stanislav Sehnalek, Milena Kubisova
Download as PDF
ABSTRACT: This study deals with polypropylene (PP) which was subjected the drop-weight test. PP is a semicrystalline thermoplastic polymer which is commonly used in many indoor applications and also in the automotive industry in the car interiors. Injection moulded PP samples were subjected the penetration test at different fall heights and the results were subsequently evaluated and discussed. It was found out that the potential energy from 100 to 230 J are suitable for PP penetration; however, as the optimal 100 J can be considered. Higher heights are not needed because of increasing power consumption of the test device. With regard to deformation and crack growing thus PP is a tough material which is firstly plastically deformed and then on one side there is stress concentration, after that the crack spread around the penetrator. This material can be considered as a suitable material for impact applications from point of view of multiaxial impact load
KEYWORDS: polypropylene, drop-weight tester, sample penetration, impact resistance, impact energy, fall height
REFERENCES:
[1] S.R. Ahmad, C. Xue, R.J. Young, The mechanisms of reinforcement of polypropylene by graphene nanoplateles, Materials Science and Engineering B, Vol.216, 2017, pp. 2-9.
[2] J.H. Lin, C.L. Huang, C.F. Liu, C.K. Chen, Z.I. Lin, C.W. Lou, Polypropylene/Short Glass Fibers Composites: Effects of Coupling Agent on Mechanical Properties, Thermal Behaviors and Morphology, Materials, Vol.8, No.X, 2015, pp. 8279-8291.
[3] A. Maciel, v. Salas, O. Manero, PP/EVA Blends: Mechanical Properties and Morphology. Effect of Compatibilizers on the Impact Behavior, Advances in Polymer Technology, Vol.24, No.4, 2015, pp. 241-252.
[4] L. Wang, D.J. Gardner, Effect of Fused Layer Modeling (FLM) Processing Parameters on Impact Strength of Cellular Polypropylene, Polymer, Vol.13, 2017, pp. 74-80.
[5] Y.G. Zhou, B. Su, L.S. Turng, J., Fabrication of Super-Ductile PP/LDPE Blended Parts with a Chemical Blowing Agent, Journal of Applied Polymer Science, 2016, doi: 10.1002/app.44101.
[6] R. Gadioli, W.R. Waldman, M.A. de Paoli, Lignin as a Green Primary Antioxidant for Polypropylene, Journal of Applied Polymer Science, 2016, doi: 10.1002/app.43558.
[7] S.A.S. Goulart, T.A. Oliveira, A. Teixeira, P.C. Miléo, D.R. Mulinari, Mechanical Behaviour of Polypropylene Reinforced Palm Fibers Composites, Procedia Engineering, Vol.10, 2011, pp.2034-2039.
[8] B.L.S. Sipião, R.L.M. Paiva, S.A.S. Goulart, D.R. Mulinari, Effect of Chemical Modification on Mechanical Behaviour of Polypropylene Reinforced Pineapple Crown Fibers Composites, Procedia Engineering, Vol.10, 2011, pp.2028-2033.
[9] B. Manchanda, V.K. Kottiyath, G.S. Kapur, S. Kant, V. Choudhary, Morphological Studies and Thermo-Mechanical Behaviors of Polypropylene/Sepiolite Nanocomposites, Polymer Composites, 2015, doi: 10.1002/pc.23800
[10] Y. Zhou, V. Rangari, H. Mahfuz, S. Jeelani, P.K. Mallick, Experimental Study on Thermal and Mechanical Behavior of Polypropylene, Talc/Polypropylene and Polypropylene/Clay Nanocomposites, Materials Science and Engineering A, Vol.402, 2005, pp.109-117.
[11] K. Wang, N. Bahlouli, F. Addiego, S. Ahzi, Y. Rémond, D. Ruch, R. Muller, Effect of Talc Content on the Degradation of re-extruded Polypropylene/Talc Composites, Polymer Degradation and Stability, Vol.98, 2013, pp. 1275-1286.
[12] F. Khademi, Y. Ma, C. Ayranci, K. Choi, K. Duke, Effects of Recycling on the Mechanical Behavior of Polypropylene at Room Temperature Through Statistical Analysis Method, Polymer Engineering and Science, 2016, doi: 10.1002/pen.24363.
[13] EN ISO 6603-1: 2000. Plastics – Determination of Puncture Impact Behavour of Rigid Plastics – Part 1: Non-Instrumented Impact Testing 2000.
