Carbon-epoxy (C-epoxy) laminated composites having different fibre volume fractions (40, 50, 60 and 70) were fabricated with and without the addition of aminofunctionalized carbon nanofibres (A-CNF). Flexural strength, interlaminar shear strength (ILSS) and tensile strength of the composite laminates were determined. It was observed that, the ability of A-CNF to enhance the mechanical properties of C-epoxy diminished significantly as the fibre volume fraction (Vf) of the C-epoxy increased from 40 to 60. At 70Vf, the mechanical properties of the ACNF reinforced C-epoxy were found to be lower compared to the C-epoxy composite made without the addition of A-CNF. In this paper suitable mechanisms for the observed trends are proposed on the basis of the fracture modes of the composite.

Subrahmanyam Challapalli

Department of Chemistry

I. Srikanth

S. Kumar

V. Singh

B. Rangababu

P. Ghosal

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Bulletin of Materials Science

Effect of carbon nanofibre addition on the mechanical properties of different Vf carbon-epoxy composites

Journal	Bulletin of Materials Science
Publisher	Indian Academy of Sciences
ISSN	02504707