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THE EFFECTS OF THICKNESS REDUCTION AND PARTICLE SIZES ON THE PROPERTIES GRAPHITE – POLYPROPYLENE COMPOSITE

Selamat, Mohd Zulkefli and Sahari, Jaafar and Muhamad, Norhamidi and Muchtar, Andanastuti (2011) THE EFFECTS OF THICKNESS REDUCTION AND PARTICLE SIZES ON THE PROPERTIES GRAPHITE – POLYPROPYLENE COMPOSITE. International Journal of Mechanical and Materials Engineering , 6 (2). pp. 194-200. ISSN (ISSN 1823-0334)

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Abstract

Over the past decade, rapid progress has been made in understanding and development of Conductive Polymer Composites (CPC). The deformations through pressing processes of CPC have significant effects on its properties especially electrical conductivity. In this research, focus is given to Polypropylene (PP)-graphite (G) composites. The G with the various sizes (40, 100, 150 and 200 μm) and binder are mixed with ratios of 80:20 according to weight percentage is selected to produce samples. A Rheomix mixer (Haake-PolylabTM) with 50 cm3 mixing chamber was used for composites compounding or mixing process. After that the mixtures were shaped through compression molding to form disc with 25 mm diameter and average thickness of 7.5 mm. The disc was then deformed through pressed with the thickness reduction of 25%, 50% and 75% at the temperatures of 1900C. The related tests such as conductivity measurements in the plane direction and microstructure analysis used Scanning Electron Microscope (SEM) have been conducted in determining the effect of thickness reduction on the properties of the disc. The disc with the thickness reduction of 25% has shows good affect on the properties especially the microstructure and the electrical properties. The electrical conductivity has increased between 20% up to 110% as compare to unpress disc.

Item Type: Article
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Mechanical Engineering > Department of Structure and Materials
Depositing User: Dr Mohd Zulkefli Selamat
Date Deposited: 20 Jul 2012 00:41
Last Modified: 28 May 2015 03:25
URI: http://eprints.utem.edu.my/id/eprint/4443

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