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Title: The potential of kaolin as a reinforcing filler for rubber composites with new sulfur cure systems
Authors: Sheikh, Saad H.
Yin, Xuena
Ansarifar, Ali
Yendall, Keith A.
Keywords: Rubber
Kaolin
Viscosity
Cure properties
Mechanical properties
Issue Date: 2017
Publisher: SAGE © The Author(s)
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, doi: 10.1177/0731684417712070.
Abstract: 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.
Description: 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.
Version: Accepted for publication
DOI: 10.1177/0731684417712070
URI: https://dspace.lboro.ac.uk/2134/25591
Publisher Link: https://doi.org/10.1177/0731684417712070
ISSN: 0731-6844
Appears in Collections:Published Articles (Materials)

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