Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 2, Issue 44, Pages 18725-18730Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ta04493b
Keywords
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Funding
- National Natural Science Foundation of China [51472012, 51102223]
- Basic Scientific Research Foundation of Beihang University
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Novel three-phase composites with excellent electromagnetic wave absorption properties based on carbon black (CB) and BaTiO3 (BT) nanoparticles embedded into polyvinylidene fluoride (PVDF) were prepared using a simple blending and hot-moulding technique. When the composites have filler contents of CB 10 wt% and BT 5 wt%, the reflection loss can reach -38.8 dB at 9.2 GHz, and the reflection loss is less than -10 dB in the frequency range from 3.5 to 18.0 GHz with an absorber thickness of 1.5-5.0 mm. Compared to the two-phase composites of CB/PVDF and BT/PVDF, the three-phase composites showed superior absorption properties. The Debye relaxation theory was used to explain the enhanced absorption properties.
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