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Advances in Materials Science and Engineering
Volume 2016, Article ID 7242891, 10 pages
http://dx.doi.org/10.1155/2016/7242891
Research Article

Rubber Composites Based on Polar Elastomers with Incorporated Modified and Unmodified Magnetic Filler

1Department of Plastics and Rubber, Institute of Polymer Materials, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia
2Department of Electromagnetic Theory, Faculty of Electrical Engineering and Information Technology, Slovak University of Technology, Iľkovičova 3, 812 19 Bratislava, Slovakia

Received 28 January 2016; Revised 17 March 2016; Accepted 4 May 2016

Academic Editor: Luigi Nicolais

Copyright © 2016 Ján Kruželák et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Rubber magnetic composites were prepared by incorporation of unmodified and surface modified strontium ferrite into rubber matrices based on NBR and NBR/PVC. Strontium ferrite was dosed to the rubber matrices in concentration scale ranging from 0 to 100 phr. The main goal was to investigate the influence of the type of ferrite on the curing process, physical-mechanical and magnetic properties of composites. The mutual interactions between the filler and rubber matrices were investigated by determination of cross-link density and SEM analysis. The incorporation of magnetic fillers leads to the increase of cross-link density and remanent magnetic induction of composites. Moreover, the improvement of physical-mechanical properties was achieved in dependence on the content of magnetic fillers. Surface modification of ferrite contributed to the enhancement of adhesion on the interphase filler-rubber. It can be stated that ferrite exhibits reinforcing effect in the composite materials and this reinforcing behavior was emphasized with the increase in polarity of the rubber matrix.