Anantharaman, M R; Prema, K H; Philip, Kurian; Vijutha, Sunny(Taylor & Francis, 2010)
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Abstract:
Rubber ferrite composites were prepared by incorporating nickel ferrite in a neoprene
rubber matrix. Kinetics of the cure reaction were determined from the rheometric torque
values and found to follow first-order kinetics. Analysis of the swelling behavior of
the rubber ferrite composites in toluene elucidates the mechanism of solvent penetration
and sorption characteristics, and reveals the extent of the physical interaction of
the ferrite particles with the neoprene rubber matrix. Mechanical properties of rubber
ferrite composites were determined, which support the reinforcing nature of nickel ferrite
to the neoprene rubber matrix. These results show that magnetic composites with
the required processing safety can be prepared economically by incorporating higher
amounts of nickel ferrite in the neoprene rubber matrix
Description:
International Journal of Polymeric Materials, 59:173–183, 2010
Anantharaman, M R; Solomon, M A; Joy, P A; Philip, Kurian(Taylor & Francis, August 16, 2010)
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Abstract:
Rubber ferrite composites (RFC) are magnetic polymer composites and have a
variety of applications as flexible magnets, pressure=photo sensors, and microwave
absorbers. The mouldability into complex shapes is one of the advantages of these
magnetic elastomers. They have the potential of replacing the conventional ceramic
materials, due to theire flexible nature. In the present study, the incorporation
of pre-characterized hexagonal ferrites, namely barium ferrite (BaFe12O19), into
natural rubber matrix is carried out according to a suitable recipe for various
loadings of the filler. The processability of these compounds was determined by
evaluating the cure characteristics: scorch time, cure time, and minimum and
maximum torque. It has been found that the addition of magnetic fillers does not
affect the processability of the composites, whereas the physical properties are
modified. The magnetic properties of these composites containing various loadings
of the magnetic filler were also investigated. The magnetic properties of RFC can
be controlled by the addition of appropriate amount of the ferrite filler.
Description:
International Journal of Polymeric Materials, 53:565–575, 2004