The Curing Characteristics And Mechanical Properties Of Waste Tyre Dust And Waste Tyre Dust Hybrid Filled Natural Rubber Compounds

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Date
2012-06
Authors
Omar, Nurul Farhana
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Publisher
Universiti Sains Malaysia
Abstract
Curing characteristics, tensile properties, fatigue, swelling behaviour and morphology of waste tyre dust (WTD) filled natural rubber (NR) compounds were studied. The properties of WTD filled NR compounds were studied at various filler loading ranging from 0-30 phr. The curing characteristics such as scorch time (t2) and cure time (t90) and maximum torque (MHR) decreased with increasing WTD loading. The mechanical properties such as tensile properties and fatigue life generally decreased with increasing amount of WTD loading. Increment of WTD loading also contributed to decreasing value of rubber-filler interaction, Qf/Qg. In this work, WTD is hybridized with three different fillers i.e. carbon black (CB), calcium carbonate (CaCO3) and kenaf fibre. NR compounds filled with 30 phr of WTD hybrid are compounded with increasing partial replacement of WTD by the three fillers at 0, 10, 15, 20 and 30 phr. The results of the aforementioned properties like maximum torque, mechanical properties and rubber-filler interaction generally showed increment of values with increasing loading of CB and CaCO3 as well as decreasing value after the addition of kenaf fibre. The SEM micrographs of fractured surface of all of the compounds supported the results for the mechanical properties.
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Keywords
Waste tyre dust and waste tyre dust hybrid , filled natural rubber compounds
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