Mechanical Properties of Fly Ash/Rubber Compound Composites Applied for Industrial Tyre

Abstract

This research aims to study the mechanical properties of rubber compound based on fly ash filler as an alternative instead of carbon black which was the standard formula that suitable for rubber compound fabrication. The samples were designed by reducing the proportion of carbon black; 5, 10 and 15 phr and replaced by china clay and fly ash. Data was analyzed using Kruskal Wallis test statistics to compare the mean difference between the mechanical properties of the standard formula and testing formula and then compared the mechanical characteristics of testing formula and industrial tyres. The results indicated that the mean of modulus 300 and tear strength of the standard formula significantly differed from testing formula: using carbon black 35 phr and fly ash 15 phr, using carbon black 30 phr, china clay 10 phr and fly ash 10 phr and using carbon black 25 phr, china clay 10 phr and fly ash 15 phr. The Elongation at break showed no significantly differed among standard formula and all testing formula.  The stress characteristics formula which using carbon black 35 phr and fly ash 15 phr and using carbon black 30 phr, china clay 10 phr and fly ash 10 phr were significantly differed from standard formula.  While comparing the mechanical properties of the industrial tyres and the testing formula found that used fly ash ratio 5, 10 and 15 phr and used fly ash 5 phr with china clay 10 phr can be applied for trailer tyre grade TD202.