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The potential of kaolin as a reinforcing filler for rubber composites with new sulfur cure systems

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journal contribution
posted on 28.06.2017, 10:19 by Saad Sheikh, Xuena Yin, Ali Ansarifar, Keith YendallKeith Yendall
The effect of a large amount of kaolin (China clay) on the viscosity, cure, hardness, Young’s modulus, tensile strength, elongation at break, stored energy density at break, tear energy and compression set resistance of some sulfur-cured natural rubber, polybutadiene rubber and ethylene-propylene-diene rubber composites was investigated. The kaolin surface had been pre-treated with 3-mercaptopropyltrimethoxysilane to improve its dispersion in the rubbers. For natural rubber, the hardness and Young’s modulus improved, tensile strength and tear energy were unchanged and the remaining properties deteriorated when kaolin was added. The viscosity increased and the scorch and optimum cure times decreased whilst the cure rate rose with kaolin. For polybutadiene rubber and ethylene-propylene-diene rubber, with the exception of the compression set resistance, all the properties including the viscosity gained from the kaolin. The kaolin was found to be extending or non-reinforcing filler for natural rubber, and highly reinforcing for polybutadiene rubber and EPDM. In addition, the scorch and optimum cure times and cure rate of polybutadiene rubber benefitted, whereas with the exception of the scorch time, the optimum cure time and cure rate of ethylene-propylenediene rubber were adversely affected by kaolin.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Materials

Published in

Journal of Reinforced Plastics and Composites

Pages

1 - 14 (14)

Citation

SHEIKH, S.H. ... et al, 2017. The potential of kaolin as a reinforcing filler for rubber composites with new sulfur cure systems. Journal of Reinforced Plastics and Composites, 36(16), pp.1132-1145.

Publisher

SAGE © The Author(s)

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

24/04/2017

Publication date

2017

Notes

This paper was accepted for publication in the journal Journal of Reinforced Plastics and Composites and the definitive published version is available at https://doi.org/10.1177/0731684417712070.

ISSN

0731-6844

eISSN

1530-7964

Language

en