Title: Wear characteristics of recycled carbon fibre-filled polypropylene composites via acidic surface treatment

Authors: Noraiham Mohamad; Anisah Abd Latiff; Mohd Edeerozey Abd Manaf; Hairul Effendy Ab Maulod; Mohammed Iqbal Shueb; Rose Farahiyan Munawar; Raja Izamshah Raja Abdullah; Mohd Shahir Kasim; Mazliah Mazlan; Jeefferie Abd Razak; Mohd Asyadi Azam

Addresses: Carbon Research Technology, Advanced Manufacturing Centre, Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia ' Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia ' Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia ' Faculty of Engineering Technology, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia ' Radiation Processing Technology Division, Malaysian Nuclear Agency, 43600 Bangi, Selangor, Malaysia ' Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia ' Precision Machining Group, Advanced Manufacturing Centre, Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia ' Precision Machining Group, Advanced Manufacturing Centre, Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia ' Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia ' Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia ' Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia

Abstract: Recycling and reuse of waste carbon fibre for making value-added products is a wise disposal management. This research is focusing on the tribological potential of nitric acid treated recycled carbon fibres (rCFs) as reinforcement in polypropylene (PP). The coefficients of friction and wear rate of this composite at different fibre loadings of 0.5, 1, 3, 5 and 7 wt% were determined for the effect of acid treatment. Composites with acid treated rCF showed smaller COF (0.30-0.33) than those with untreated rCF (0.51-0.55). In contrast, wear rate was higher for the composites filled with treated rCF than those with untreated rCF. The increment of fibre loading from 5 wt% to 7 wt% decreased the wear rate for both untreated and acid treated composites owing the formation of stable patch film and transfer film. The films effectively prevented direct contact of the composites with the counterface; hence, wear was greatly inhibited.

Keywords: recycled carbon fibre; rCF; polypropylene composites; acid treatment; wear rates; coefficient of friction.

DOI: 10.1504/WRSTSD.2018.093220

World Review of Science, Technology and Sustainable Development, 2018 Vol.14 No.2/3, pp.165 - 179

Received: 11 Sep 2017
Accepted: 16 Jan 2018
Published online: 14 Jul 2018 *

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