Journal
COMPOSITES SCIENCE AND TECHNOLOGY
Volume 117, Issue -, Pages 215-224Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2015.06.022
Keywords
Polymer-matrix composites (PMCs); Nano composites; Functional composites; Electrical properties; Magnetic properties
Categories
Funding
- National Natural Science Foundation of China [20904019, 21067004, 51273089]
- Aviation Science Fund [2011ZF56015, 2013ZF56025]
- Natural Science Foundation of Jiangxi Province [20132BAB203018]
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, TIPC, CSA [PCOM201228, PCOM201401]
- Jiangxi Province Education Department of Science and Technology [GJJ13491]
- Jiangxi Province Youth Scientists Cultivating Object Program [20112BCB23017]
- Key Laboratory of Jiangxi Province for Persistant Pollutants Control and Resources Recycle, Nanchang Hangkong University [ST201222007]
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We report a novel ternary magnetic-conductive hybrid material with high conductivity, good magnetism, high stability and good wave-absorption. The hybrid material is based on doped barium ferrite (BF)-titanium dioxide (TD) and multiwalled carbon nanotubes (MCNTs) coated by polythiophene (PTh) matrix. The BF-TD/MCNTs/PTh composites were synthesized through in-situ chemical polymerization of thiophene in the presence of the BF-TD composites and MCNTs. The resulting composites were characterized by Fourier transform infrared (FT-IR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), transmission electron microscopy (TEM), four-probe conductivity tester, vibrating sample magnetometer (VSM) and network analyzer. XRD and FT-IR indicated that the BF-TD/MCNTs/PTh composites were successfully synthesized with strong interactions among constituents. DTA-TGA analysis suggested that the decomposition of BF-TD/MCNTs/PTh composites included three stages. The first two stages were in accordance with the decomposition of BF-TD composites. The third stage was attributed to the decomposition of polythiophene. SEM and TEM demonstrated that BF-TD and MCNTs were well coated by polythiophene. The electromagnetic parameters showed that polythiophene and MCNTs could significantly improve the conductivity and the wave-absorbing performance of the BF-TD composites. When the MCNT content was 20 wt.% and the ratio of the barium ferrite to titanium dioxide was 4:5, BF-TD/MCNTs/PTh composites exhibited the best wave-absorbing performance. (C) 2015 Elsevier Ltd. All rights reserved.
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