Effects of liquid natural rubber (LNR) on the mechanical properties of LNR toughened epoxy composite

Lee Yip Seng, Sahrim Ahmad, Rozaidi Rasid, S. E Yong E H Noum, Yew Chin Hock, Mou'ad A. Tarawneh

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The effects of liquid natural rubber (LNR) on the morphology and mechanical properties of rubber modified epoxy were investigated. Epoxy composites were prepared in four different compositions of LNR (3,5, 7 and 9phr) by using twin screw extruder. The samples for tensile, fracture toughness and impact tests were prepared according to ASTM D 638, D 5045 and D 256. The elastomeric nature of rubber can act as energy dissipating centre to cause the ductile fracture for the rubber modified epoxy. They was an obvious increment of fracture toughness where maximum value was observed with 3 phr LNR. A clear increment of impact strength at 3 phr LNR was observed, followed by a small increment at 5 phr and no further increment at 7 and 9 phr LNR. The tensile strength showed a similar trend with impact strength and Young's modulus. SEM micrographs showed an increment of rubber particle size when the amount of LNR was increased and caused the mechanical properties to drop.

Original languageEnglish
Pages (from-to)679-683
Number of pages5
JournalSains Malaysiana
Volume40
Issue number7
Publication statusPublished - Jul 2011

Fingerprint

rubber
epoxides
mechanical properties
liquids
strength (mechanics)
extruders
tensile strength
screws
modulus of elasticity
particle size
energy

Keywords

  • Epoxy resin
  • Liquid natural rubber
  • Mechanical properties
  • Toughness

ASJC Scopus subject areas

  • General

Cite this

Seng, L. Y., Ahmad, S., Rasid, R., Noum, S. E. Y. E. H., Hock, Y. C., & Tarawneh, M. A. (2011). Effects of liquid natural rubber (LNR) on the mechanical properties of LNR toughened epoxy composite. Sains Malaysiana, 40(7), 679-683.

Effects of liquid natural rubber (LNR) on the mechanical properties of LNR toughened epoxy composite. / Seng, Lee Yip; Ahmad, Sahrim; Rasid, Rozaidi; Noum, S. E Yong E H; Hock, Yew Chin; Tarawneh, Mou'ad A.

In: Sains Malaysiana, Vol. 40, No. 7, 07.2011, p. 679-683.

Research output: Contribution to journalArticle

Seng, Lee Yip ; Ahmad, Sahrim ; Rasid, Rozaidi ; Noum, S. E Yong E H ; Hock, Yew Chin ; Tarawneh, Mou'ad A. / Effects of liquid natural rubber (LNR) on the mechanical properties of LNR toughened epoxy composite. In: Sains Malaysiana. 2011 ; Vol. 40, No. 7. pp. 679-683.
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