Title: EFFECT OF GAMMA-IRRADIATION ON THE PROPERTIES OF RUBBER-BASED CONDUCTIVE BLEND COMPOSITES
Page Range: p.525-534
Author(s): Madani M
File size: 125K
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Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 12
Issue No: No. 6
Abstract
In order to improve the heat and ozone resistance of butyl rubber, it is blended with EPDM, and fillers are incorporated to improve the physicochemical properties. The influence of gamma irradiation on the electrical, swelling and mechanical properties of crosslinked butyl rubber and EPDM, and their blends is investigated. Results of tests showed that the modulus increased while the elongation at break decreased with irradiation. The gap-width between carbon-carbon particles was found to be highly affected by the irradiation dose, which in turn influenced the electrical conductivity of these blends. The swelling equilibrium data in different solvents were analysed by the Flory-Rehner equation to obtain estimates of the average molecular weight and crosslink density. 27 refs.
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