THE EFFECT OF KENAF FIBRE LOADING ON CURING CHARACTERISTICS AND MECHANICAL PROPERTIES OF WASTE TYRE DUST/ KENAF FIBRE HYBRID FILLER FILLED NATURAL RUBBER COMPOUNDS

Hanafi Ismail, Nurul Farhana Omar, Nadras Othman

Abstract


Waste tyre dust (WTD)/kenaf fibre (Ke) hybrid filler filled natural rubber (NR) compounds having constant 30 phr loading were prepared with increasing partial replacement of WTD by kenaf fibre at 0, 10, 15, 20, and 30 phr. Curing characteristics, mechanical properties, rubber-fibre interaction, and morphology of the NR compounds were studied after the compounds were obtained. The curing characteristics such as t2 and t90 increased with increment of kenaf fibre loading. For MHR, the increasing partial replacement of WTD by kenaf fibre showed increasing MHR value. For tensile properties, the value of tensile strength and elongation at break value decreased with increasing kenaf fibre loading. The values of M100 and M300 increased but then decreased after the addition of 15 phr of kenaf fibre loading. Besides, fatigue life value also showed a decreasing trend with increasing kenaf fibre loading. For rubber-fibre interaction, the values of Qf/Qg showed a small increment with increasing kenaf fibre loading. The SEM micrographs obtained for fractured surface of WTD/kenaf fibre hybrid filled NR compounds supported the results for the mechanical properties.

Keywords


Curing characteristics; Tensile properties; Natural rubber; Waste tyre dust; Kenaf fibre

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