Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7890334 | Composites Part A: Applied Science and Manufacturing | 2016 | 8 Pages |
Abstract
Conductive polymer composites (CPCs) that contain a segregated structure have attracted significant attentions because of their promising for fulfilling low filler contents with high electromagnetic interference (EMI) properties. In the present study, segregated poly(vinylidene fluoride) (PVDF)/multi-walled carbon nanotubes (MWCNTs) composites were successfully prepared by mechanical mixing and hot compaction. The PVDF/MWCNTs samples with 7Â wt% filler content possess high electrical conductivities and high EMI shielding effectiveness (SE), reaching 0.06Â SÂ cmâ1 and 30.89Â dB (in the X-band frequency region), much higher than lots of reported results for CNT-based composites. And the EMI SE greatly increased across the frequency range as the sample thickness was improved from 0.6 to 3.0Â mm. The EMI shielding mechanisms were also investigated and the results demonstrated absorption dominating shielding mechanism in this segregated material. This effective preparation method is simple, low-cost, and environmentally-friendly and has potential industrial applications in the future.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Hui Wang, Kang Zheng, Xian Zhang, Tianxiang Du, Chao Xiao, Xin Ding, Chao Bao, Lin Chen, Xingyou Tian,