Interlaminar fracture properties of fibre reinforced natural rubber/polypropylene composites

Rozli Zulkifli, L. K. Fatt, Che Husna Azhari, J. Sahari

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The effect of the addition of natural rubber (NR) on the interlaminar fracture properties of thermoplastic composites which is a measure of the resistance of the material to delamination crack propagation, has been studied. NR-polypropylene (PP) composites were prepared with increasing amounts of NR in PP at 5-20% compositions reinforced with 5% E-type chopped strand glass-fibre mat. Panels were produced by compression moulding technique and these have been tested for mode I interlaminar fracture using double cantilever beam specimen testing method. Tests have been undertaken at cross-head displacement rate of 5 mm/min for all the specimens. It was found that, as the amount of NR was increased, the interlaminar fracture toughness, GIC of the composite materials decreased. Scanning electron microscopy of the fracture surfaces is used to help explain these findings. The crack propagation areas showed all the fibres were bare with no matrix covering them. These were seen at 200× magnification. The smooth clean surface of the fibres is the result of poor interfacial debonding. No fibre bridging is observed between the fibres and the failure mainly occurred at the fibre-matrix interface as seen using scanning electron microscopy. This shows that the addition of rubber made the adhesion between the interface weaker.

Original languageEnglish
Pages (from-to)33-37
Number of pages5
JournalJournal of Materials Processing Technology
Volume128
Issue number1-3
DOIs
Publication statusPublished - 6 Oct 2002

Fingerprint

Polypropylenes
Rubber
Fibers
Composite materials
Crack propagation
Scanning electron microscopy
Compression molding
Debonding
Cantilever beams
Delamination
Glass fibers
Thermoplastics
Fracture toughness
Adhesion
Testing
Chemical analysis

Keywords

  • Interlaminar fracture
  • Natural rubber
  • NR-PP composites
  • Polypropylene

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Interlaminar fracture properties of fibre reinforced natural rubber/polypropylene composites. / Zulkifli, Rozli; Fatt, L. K.; Azhari, Che Husna; Sahari, J.

In: Journal of Materials Processing Technology, Vol. 128, No. 1-3, 06.10.2002, p. 33-37.

Research output: Contribution to journalArticle

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