Anzeige
Erschienen in:
29.04.2017
Enhanced microwave absorption properties of epoxy composites containing graphene decorated with core–shell Fe3O4@polypyrrole nanoparticles
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 16/2017
EinloggenAktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
Abstract
Core–shell Fe3O4@polypyrrole nanoparticles modified reduced graphene oxide (RGO) epoxy composites with enhanced microwave absorption properties was successfully synthesized. The structure, morphology and electromagnetic properties of the as-prepared composites were subsequently characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, vibrating sample magnetometry and vector network analyzer. Due to the synergic effect between graphene and Fe3O4@polypyrrole, the RGO decorated with FPY epoxy composites exhibit excellent microwave absorption capability. The minimum value of the reflection loss is up to −25.1 dB at 7.1 GHz with a layer thickness of 4 mm and the maximum absorption bandwidth exceeding −10 dB is almost 5 GHz in the range from 13 to 18 GHz with a matching thickness of 2 mm. The as-obtained composites are convinced to be a promising candidate for efficient lightweight microwave absorbing materials.