期刊
EXPRESS POLYMER LETTERS
卷 7, 期 3, 页码 212-223出版社
BUDAPEST UNIV TECHNOL & ECON
DOI: 10.3144/expresspolymlett.2013.20
关键词
nanocomposites; carbon nanotube; permittivity; permeability; microwave absorption
资金
- Council of Scientific and Industrial Research (CSIR), New Delhi, India
Multiwall carbon nanotube (MWCNT) based nanocomposites were prepared by a two-step process. Firstly, titanium dioxide (TiO2) coated MWCNT was prepared via sol-gel technique. In the second step, the acid modified MWCNTs were dispersed in the thermoplastic polyurethane matrix by solution blending process. Characterizations of the nanocomposites were done by X-ray diffraction analysis, X-ray photoelectron spectroscopy, Scanning Electron Microscopy, Transmission Electron Microscopy and Energy-dispersive X-ray spectroscopy. Microwave absorption studies of the nanocomposites were carried out in X-band region. The microwave absorption result was discussed with the help of complex permittivity and permeability of the prepared radar absorbing material (RAM). The result showed superior microwave absorption property of the composite containing both TiO2 coated MWCNT and magnetite (Fe3O4). This result is due to the effective absorption of both electrical and magnetic components of the microwave. RAM-MW, RAM-Ti, RAM-Ti@MW and RAM-Ti@MW/Fe and showed the maximum reflection loss of -16.03 dB at 10.99 GHz, -8.4 dB at 12.4 GHz, -36.44 dB at 12.05 GHz and -42.53 dB at 10.98 GHz respectively. Incorporation of MWCNT enhanced the thermal stability of the composite which has been confirmed by thermogravimetric analysis.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据