Tensile properties of glass fibre reinforced recycled mixed plastic composites

Bajracharya, Rohan Muni and Manalo, Allan C. and Karunasena, Warna and Lau, Kin-tak (2014) Tensile properties of glass fibre reinforced recycled mixed plastic composites. In: Australasian Composites Conference (CA 2014): Materials for a Lighter and Smarter World, 7–9 Apr 2014, Newcastle, Australia.


Recently, recycled plastics have drawn much attention to the public and been increasingly used as non-structural engineering and construction components. These materials have moderate mechanical strength, good biodegradable properties and resistance to rot and insect attacks making them to be comparable with timber for light load-bearing structural applications. In terms of the environmental concern, excessive use of timber may cause serious damages to the wildlife environment. Unfortunately, the use of these plastics and their composites in the civil engineering industry is still restricted to indoor non-load bearing components due to their low stiffness and strength properties. In view of the aforementioned problem, this study investigated the tensile properties of glass fibre reinforced recycled mixed plastic composites (GMPC) as an alternative for pure recycled plastics. The matrix of the composites was made by blending recycled high-density polyethylene (rHDPE), recycled low-density polyethylene (rLDPE) and recycled polypropylene (rPP), and the reinforcement was short glass fibre. The contents of fibre for this study ranged from 10 to 30 wt.% and the composites were produced by using injection moulding technique. The tensile property test was carried out by following the ISO 527 standard. It was observed that with the addition of 30 wt% of glass fibre, tensile strength and modulus increased by 100% and 300%, respectively. However, the specimens with glass fibre became brittle and ductility was reduced. The comparison of the results of GMPC composites with virgin plastic shows that the addition of glass fibre enhances tensile properties.

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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 11 Jun 2014 05:20
Last Modified: 13 Jun 2017 23:54
Uncontrolled Keywords: recycled mixed plastic composites; glass-fibre; tensile properties
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090599 Civil Engineering not elsewhere classified
09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
09 Engineering > 0912 Materials Engineering > 091209 Polymers and Plastics
Socio-Economic Objective: B Economic Development > 87 Construction > 8703 Construction Materials Performance and Processes > 870399 Construction Materials Performance and Processes not elsewhere classified
URI: http://eprints.usq.edu.au/id/eprint/25178

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