Abstract
Composites with high electromagnetic wave absorption were prepared using Eucommia ulmoides gum (EUG) as a matrix and Fe3O4@polyaniline (PANI) core-shell materials as electromagnetic-wave-absorbing agents. The morphology and mechanical properties of Fe3O4@PANI/EUG composites were characterized, along with the electromagnetic-wave-absorbing properties and its mechanism. The morphology of Fe3O4@PANI/EUG composites showed that Fe3O4@PANI were uniformly dispersed in the matrix and formed a dense filler network which was benefit for high electromagnetic wave absorption. The interface between the crystalline and amorphous phases within the EUG matrix can accumulate electrical charges, leading to polarization loss and thereby enhancing electromagnetic wave absorption. Fe3O4@PANI/EUG composites has the minimum reflection loss of −48.98 dB at 7.46 GHz, and its effective bandwidth with a reflection loss below −10 dB in the range of 5.05–9.06 GHz. The outstanding performance is attributed to enhanced impedance matching, interfacial polarization originating from the core-shell and shell-polymer interfaces, as well as polarization loss caused by the boundary between crystalline and amorphous phases within the EUG matrix.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.