Electrical and EMI shielding studies of ferrite/MWCNTs/PVDF composites

In this work, CFO/MWCNTs/PVDF and BFO/MWCNTs/PVDF composites are prepared and the comparative analysis of electrical properties and electromagnetic interference (EMI) shielding performance of both type of composites are investigated. The dielectric and conductivity characteristics are observed with...

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Bibliographic Details
Published in:Journal of applied polymer science 2024-10, Vol.142 (5), p.n/a
Main Authors: Meena, Shivali, Kumari, Neelam, Gahlaut, Vishant, Shekhar, Chander, Mitra, Supratim, Dwivedi, Umesh Kumar
Format: Article
Language:English
Subjects:
Barium hexaferrite
Cobalt ferrites
Composite materials
dielectric
Electrical properties
Electrical resistivity
Electromagnetic interference
Electromagnetic shielding
EMI shielding
ferrite
ferroelectric
Ferroelectricity
Frequency ranges
interface
Magnetic properties
Magnetic shielding
polymer composite
Polyvinylidene fluorides
PVDF
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Summary:In this work, CFO/MWCNTs/PVDF and BFO/MWCNTs/PVDF composites are prepared and the comparative analysis of electrical properties and electromagnetic interference (EMI) shielding performance of both type of composites are investigated. The dielectric and conductivity characteristics are observed with varying ferrite concentration, frequency, and temperature. Ferroelectric properties are also obtained at 6 kV/cm field and EMI shielding behavior is observed in 8–12 GHz frequency range. Results exhibited that the studied properties of the composite enhances with increasing ferrite concentration that attributed to increased amount of magnetic nanoparticles. Cobalt ferrite (CFO) filled polyvinylidene fluoride (PVDF) composite is showing better properties as compared to barium ferrite (BFO) filled PVDF composites. The mechanism involve for this behavior is discussed herein. Properties of MWCNTs/PVDF composites with different ferrites.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.56446