Performance and Lightweight Thermoplastic Materials for Automotive Application using Hollow Microspheres


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In recent decades, the weight of passenger vehicles has constantly increased. This leads to a rise in fuel consumption and higher CO2 emissions. On this basis, vehicle weight reduction is a privileged research axis to meet regulatory requirements on emissions by 2020. The current study is focused on the development of thermoplastic polymer used in the automotive sector. In fact, thermoplastic polymers allow innovative design and offer the advantage of being recycled for sustainable development purposes. Some lighter fillers were incorporated in this polymer by melt processing for weight saving benefits. We were interested mainly in hollow microspheres which are lower density than conventional mineral fillers (such as: talc, calcium carbonate, glass fibers etc ...). This study explores the impact of pilot-scale melt-processing on six (6) hollow microspheres embedded in high impact polypropylene commonly used for car bumpers. We found that two commercially available microspheres (grades iM30K and K37) withstand melt-processing successfully and reduce the polymer density.



Key Engineering Materials (Volumes 611-612)

Edited by:

Jari Larkiola




A. S. Doumbia et al., "Performance and Lightweight Thermoplastic Materials for Automotive Application using Hollow Microspheres", Key Engineering Materials, Vols. 611-612, pp. 859-867, 2014

Online since:

May 2014




* - Corresponding Author

[1] C. Swetha, R. Kumar, Quasi-static uni-axial compression behaviour of hollow glass microspheres/epoxy based syntactic foams, Mater. Des. 32 (2011) 4152–4163.


[2] D. Choqueuse, Experimental study and analysis of the mechanical behaviour of syntactic foams used in deep sea, PhD thesis of U.F.R. des sciences et techniques de l, université de franche-comté » (2012).

[3] J. Gao, J. Wang, H. Xu, C. Wu, Preparation and properties of hollow glass bead filled silicone rubber foams with low thermal conductivity, Mater. Des. 46 (2013) 491-496.


[4] B. Li, J. Yuan, Z.G. An, J.J. Zhang, Effect of microstructure and physical parameters of hollow glass microsphere on insulation performance, Mater. Let. 65 (2011) 1992-(1994).

[5] N. Sombatsompop, Effects of crosslink characteristics on density and swelling behaviour of expanded natural rubber vulcanizates, Cell. Polym. 17 (1998) 63-74.

[6] B.H. Rutz, J. C. Berg, A review of the feasibility of lightening structural polymeric composites with voids without compromising mechanical properties, Adv. Col. Int. Sci. 160 (2010) 56–75.


[7] H.S. Kim, H.H. Oh, Manufacturing and impact behaviour of synthactic foam, J. Appl. Polym. Sci. 76 (2000) 1324-1328.

[8] H.S. Kim, M.A. Khamis, Fracture and impact behaviours of hollow micro-spheres/epoxy resin composites, Compos. Part A: Appl. Sci. 32 (2001) 1311-1317.


[9] F.A. Shutov, Syntactic Polym. Foams, Adv. Polym. Sci. 73/74 (1986) 63–123.

[10] E. Lawrence, R. Pyrz, Polym. Polym. Compos. 9 (2001) 227–237.

[11] H. Mae, M. Omiya, K. Kihimoto, Effects of strain rate and density on tensile behavior of polypropylene syntactic foam with polymer microballoons. Mater. Sci. Eng. A 477 (2008) 168–178.


[12] N. Bahlouli, D. Pessey, C. Raveyre, J. Guillet, S. Ahzi, A. Dahoun, J. M. Hiver, Recycling effects on the rheological and thermo-mechanical properties of polypropylene – based composites, Mater. Des. 33 (2012) 451-458.


[13] A. Amash and P. Zugenmaier, Morphology and properties of isotropic and oriented samples of cellulose fibre–polypropylene composites, Polym. 41 (2000) 1589-1596.


[14] J. Li, X. Luo, X. Lin, Preparation and characterization of hollow glass microsphere reinforced poly(butylene succinate) composites, Mater. Des. 46 (2013) 902–909.


[15] J.A.M. Ferreira; C. Capela; J.D. Costa, A study of the mechanical behaviour on fibre reinforced hollow microspheres hybrid composites, Compos.: Part A 41 (2010) 345-352.


[16] E.M. Wouterson, F.Y.C. Boey, X. Hu, S.C. Wong, Specific properties and fracture toughness of syntactic foam: effect of foam microstructures, Compos. Sci. Technol. 65 (2005) 1840–1850.


[17] S.N. Patankar, Y.A. Kranov, Hollow glass microsphere HDPE composites for low energy sustainability, Mater. Sci. Eng. A 527 (2010) 1361–1366.


[18] T. Wang, S. Chen, Q. Wang, Pei X, Damping analysis of polyurethane/epoxy graft interpenetrating polymer network composites filled with short carbon fiber and micro hollow glass bead, Mater Des 2010; 31(8)2810-3815.


[19] J. -Z. Liang, Reinforcement and quantitative description of inorganic particulate filled polymer composites, Compos. Part B 51 (2013) 224-232.