Cobalt/Polypyrrole Nanocomposites with Controllable Electromagnetic Properties（2）
第六届海内外中华青年材料科学技术研讨会（2015）——Cobalt/polypyrrole (Co/PPy) nanocomposites were prepared via an in situ oxidation polymerization of pyrrole in an aqueous dispersion of Co nanoparticles (NPs). The Co/PPy nanocomposites showed good electromagnetic properties because of the coexistence of magnetic loss and dielectric loss to electromagnetic waves. The electromagnetic wave absorbing bandwidth (reflection loss < −10 dB) for Co/PPy (30 wt% in a paraffin matrix) was located at 11.7–16.47 GHz with a thickness of 2 mm, and with a maximum reflection loss (around −33 dB) at 13.6 GHz. More interestingly, the electromagnetic wave absorbing properties of the nanocomposites can be easily controlled by tuning the ratio of the two components in the composites.
关键词： nanocomposites;electromagnetic properties;electromagnetic wave 第六届海内外中华青年材料科学技术研讨会（2015）
主讲人：A.P. Haicheng Wang 机构：University of Science and Technology Beijing
时长：0:11:06 年代：2015年
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