Abstract
The objective of this study is to develop microwave absorbers using both dielectric and magnetic lossy materials. Polypyrrole (PPY) is used as dielectric lossy materials and carbonyl iron particles is used as magnetic lossy materials. Polypyrrole powders are prepared by in situ polymerization method. Then PPY–carbonyl iron composite with different mixture ratios have been prepared by as-prepared material. The structure, morphology and properties of the composites are characterized with IR, XRD, scanning electron microscope (SEM), Net-work Anlyzer. The complex permittivity ( ε ′ r − j ε ′ ′ r ) and reflection loss (dB) of the composites have been measured at different microwave frequencies in S-band and C-band (30–6000 MHz) employing vector network analyzer model HP 8722ET vector. The effect of the mass ratio of PPY–carbonyl iron on the microwave loss properties of the composites is investigated. A possible microwave absorbing mechanism of PPY–carbonyl iron composite has been proposed. The PPY–carbonyl iron composite can find applications in suppression of electromagnetic interference (EMI), and reduction of radar signature.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
