Mechanical properties and dynamic mechanical analysis of thermoplastic-natural-rubber-reinforced short carbon fiber and kenaf fiber hybrid composites

Anuar, Hazleen and Hj J Ahmad, Sahrim and Rasid, Rozaidi and Ahmad, Azizan and Wan Busu, W. N. (2008) Mechanical properties and dynamic mechanical analysis of thermoplastic-natural-rubber-reinforced short carbon fiber and kenaf fiber hybrid composites. Journal of Applied Polymer Science, 107 (6). pp. 4043-4052. ISSN 0021-8995

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Abstract

The hybridization of thermoplastic natural rubber based on carbon fiber (CF) and kenaf fiber (KF) was investigated for its mechanical and thermal properties. Hybrid composites were fabricated with a melt-blending method in an internal mixer. Samples with overall fiber contents of 5, 10, 15, and 20 vol % were subjected to flexural testing, and samples with up to 30% fiber content were subjected to impact testing. For flexural testing, generally, the strength and modulus increased up to 15 vol % and then declined. However, for impact testing, higher fiber contents resulted in an increment in strength in both treated and untreated composites. Thermal analysis was carried out by means of dynamic mechanical analysis on composites with 15 vol % fiber content with fractions of CF to KF of 100/0, 70/30, 50/50, 30/70, and 0/100. Generally, the storage modulus, loss modulus, and tan d for the untreated hybrid composite were more consistent and better than those of the treated hybrid composites. The glasstransition temperature of the treated hybrid composite was slightly lower than that of the untreated composite, which indicated poor damping properties. A scanning electron micrograph of the fracture surface of the treated hybrid composite gave insight into the damping characteristics.

Item Type:	Article (Journal)
Additional Information:	4130/14012
Uncontrolled Keywords:	Composite; Glass transition; Mechanical properties
Subjects:	T Technology > TS Manufactures > TS1870 Rubber industry
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Dr Hazleen Anuar
Date Deposited:	22 Jul 2013 10:12
Last Modified:	22 Jul 2013 10:12
URI:	http://irep.iium.edu.my/id/eprint/14012

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