The Influence of Nanostructured Metal Oxides and Unsaturated Acids on Peroxide Cross-Linking of Ethylene-Octene Rubber

Abstract:

This paper deals with blends of ethylene-octene rubber (POE) with nanostructured metal oxides: magnesium oxide (MgO), calcium oxide (CaO), zinc oxide (ZnO) and unsaturated acids: itaconic acid (IA), sorbic acid (SA) and crotonic acid (CA), as co-agents. Dicumyl peroxide (DCP) was used as a vulcanizing agent. Elastomer composites were prepared in Brabender measuring mixer N50. Rheometric properties of rubber mixes and crosslink density of vulcanizates were measured. Mechanical properties of the samples were also investigated. Dispersion degree of coagents in elastomer matrix was studied by SEM images. Cross-link density analysis revealed that POE vulcanizates contained both ionic bonds and covalent bonds. The results showed that the nanostructured metal oxides and unsaturated acids used as co-agents can greatly improve the modulus at 100% of elongation and tensile strength of the vulcanizates.

• Periodical: Materials Science Forum (Volume 714)
• Pages: 271-276
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.714.271
• Online since: March 2012
• Authors: Martyna Pingot, Tomasz Pingot, Magdalena Maciejewska, Marian Zaborski
• Keywords: Co-Agent, Cross-Linking, Ethylene Octene Rubber, Mechanical Property, Peroxide

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