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Please use this identifier to cite or link to this item: http://purl.org/purl/4399

Title: A microwave absorber based on strontium ferrite–carbon black–nitrile rubber for S and X-band applications
Authors: Anantharaman, M R
Vinayasree, S
Soloman, M A
Vijutha, Sunny
Mohanan, P
Philip, Kurian
Keywords: Hybrid Composites
Flexible composites
Particle-reinforced composites
Polymer-matrix composites (PMCs)
Functional Composites
Issue Date: 21-Apr-2013
Publisher: Elsevier
Abstract: Flexible and thin single layer microwave absorbers based on strontium ferrite–carbon black–nitrile rubber composites have been fabricated employing a specific recipe and their reflection loss characteristics were studied in the S (2–4 GHz) and X-bands (8–12 GHz). The incorporation of carbon black not only reinforces the rubber by improving the mechanical properties of the composite but also modifies the dielectric permittivity of the composite. Strontium ferrite when impregnated into a rubber matrix imparts the required magnetic permeability to the composite. The combination of strontium ferrite and carbon black can then be employed to tune the microwave absorption characteristics of the resulting composite. The complex dielectric permittivity and permeability were measured by employing a cavity perturbation technique. The microwave absorption characteristics of composites were modelled in that an electromagnetic wave incident normally on the metal terminated single layer absorber. The influence of filler volume fraction, frequency, absorber thickness on the bandwidth of absorption are discussed and correlated
Description: Composites Science and Technology 82 (2013) 69–75
URI: http://dyuthi.cusat.ac.in/purl/4399
Appears in Collections:Dr. M R Anantharaman

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