Soloman, M A; Dr. Philip, Kurian(Cochin University of Science & Technology, July , 2002)
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Abstract:
In the present study the preparation and characterisation of rubber ferrite
composites (RFC) containing barium ferrite (BaF) and strontium ferrite (SrF) have
been dealt with. The incorporation of the hard ferrites into natural and nitrile rubber
was carried out according to a specific recipe for various loadings of magnetic
fillers. For this, the ferrite materials namely barium ferrite and strontium ferrite
having the general formula MO6Fe2O3 have been prepared by the conventional
ceramic techniques. After characterisation they were incorporated into the natural
and nitrile rubber matrix by mechanical method. Carbon black was also incorporated at different loading into the rubber ferrite composites to study its
effect on various properties. The cure characteristics, mechanical, dielectric and
magnetic properties of these composites were evaluated. The ac electrical
conductivity of both the ceramic ferrites and rubber ferrite composites were also
calculated using a simple relation. The investigations revealed that the rubber ferrite composites with the
required dielectric and magnetic properties can be obtained by the incorporation of
ferrite fillers into the rubber matrix, without compromising much on the
processability and mechanical properties.
Description:
Department of Polymer Science and Rubber Technology, Cochin
University of Science and Technology