High microwave absorption performances for single-walled carbon nanotube-epoxy composites with ultra-low loadings

作者：Liang Jia-Jie; Huang Yi^*; Zhang Fan; Li Ning; Ma Yan-Feng; Li Fei-Fei; Chen Yong-Sheng

来源：Chinese Physics B, 2014, 23(8): 088802.

DOI：10.1088/1674-1056/23/8/088802

• microwave absorption
• single-walled carbon nanotube-epoxy composites
• ultra-low loadings

Microwave-absorbing polymeric composites based on single-walled carbon nanotubes (SWNTs) are fabricated via a simple yet versatile method, and these SWNT-epoxy composites exhibit very impressive microwave absorption performances in a range of 2 GHz-18 GHz. For instance, a maximum absorbing value as high as 28 dB can be achieved for each of these SWNT-epoxy composites (1.3-mm thickness) with only 1 wt% loading of SWNTs, and about 4.8 GHz bandwidth, corresponding to a microwave absorption performance higher than 10 dB, is obtained. Furthermore, such low and appropriate loadings of SWNTs also enhance the mechanical strength of the composite. It is suggested that these remarkable results are mainly attributable to the excellent intrinsic properties of SWNTs and their homogeneous dispersion state in the polymer matrix.

• 出版日期2014-8
• 单位南开大学