Journal
COMPOSITES SCIENCE AND TECHNOLOGY
Volume 149, Issue -, Pages 159-165Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2017.06.026
Keywords
Polyaniline; Aramid nanofibers; Electromagnetic interference shielding; Electrical conductivity; Mechanical strength
Categories
Funding
- Ministry of Science and Technology of China [2016YFA0203400]
- Chinese Academy of Sciences
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A composite with hierarchical layering structure characteristics was prepared for electromagnetic interference shielding applications. In this composite, highly conductive polyanilines (PANI) acted as a filler to shield electromagnetic waves and the strong aramid nanofibers (ANFs) film played as a matrix material to provide good mechanical property. This composite film with a thickness of several micro metres displayed a shielding effectiveness as high as 30 dB, a mechanical strength of 179 MPa, as well as good stability. These performances combined because the extended PANI molecules which have a very similar molecular structure with aramid molecules attached strongly on the surface of aramid nano fibers to form the highly conductive interconnected networks, and the hierarchical layering structure of ANF matrix was reserved. This composite could find potential applications for electromagnetic wave shielding especially when they are coated on curved surfaces and operated with frequent folding and/or stretching. (C) 2017 Elsevier Ltd. All rights reserved.
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