Improving the Properties of Rubber Roll Husker with Calcium Carbonate
Keywords:
Rubber roll husker, Compound rubber, Calcium carbonateAbstract
This research aimed to study the effect of fillers in a rubber compound for improving the mechanical properties of rubber roll husker to withstand longer usage. There were two types of fillers in this mixture, such as calcium carbonate and silica. In this experiment, five rations of calcium carbonate and silica were studied (CC10-Si50, CC20-Si40, CC30-Si30, CC40-Si20 and CC50-Si10) by comparing with general rubber compound ratio (CC00-Si60). Additionally, tensile strength, elongation, hardness at pre- and post-accelerated curing and minimum and maximum torques were also investigated. The result was found that calcium carbonate at 20 phr and silica at 40 phr (CC20-Si40) showed highest mechanical properties, that is the tensile strength of 26.3 MPa, elongation of 545%, hardness at pre- and post-accelerated curing of 77.8 and 77.9 IRHD, minimum and maximum torques of 2.21 and 28.52 dN-M, respectively. In addition, this ratio provided better mechanical properties filer than the general rubber compound ratio as well.
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