Fabrication of highly flexible electromagnetic interference shielding polyimide carbon black composite using hot-pressing method

Title
Fabrication of highly flexible electromagnetic interference shielding polyimide carbon black composite using hot-pressing method
Authors
정용채김영남Jinyoung KimGunhwi KimSeo-Yul KimSangrae LeeJuheon LeeJinsu KimJinuk KwonHaksoo Han
Keywords
Polyimide; Electromagnetic interference shielding; Thin films; Porous polymer
Issue Date
2021-09
Publisher
Composites. Part B, Engineering
Citation
VOL 221, 109010
Abstract
Traditionally, electromagnetic interference (EMI) shielding material has been occupied by metallic materials due to its high electric conductivity and EMI shielding effect. However, with rising demands from technology development for light-weight, highly durable, and easily moldable materials, metallic materials are gradually being substituted by polymer composite materials. Still, there are limitations on polymer composite as EMI shields: High ratio of fillers in composite achieves excellent EMI shielding effect but it severely compromises its mechanical behaviors. In many studies, they have failed to fabricate the high-ratio filler films with good mechanical durability, but here the initially fragile high-ratio film has been transformed to a flexible film by a very simple method: Hot-pressing. This approach not only solved the problems mentioned above but further provided a possible breakthrough point for composite study by solving threshold of the maximum loading of the fillers in polymer matrix. The stiff composite of polyimide sponge with exceeding carbon black loading became a highly flexible EMI SE film with doubled tensile strength and enhanced EMI SE. As a result, a new way of fabricating flexible EMI shielding polymer composite is demonstrated with great potential applications in aerospace and wireless communications.
URI
http://pubs.kist.re.kr/handle/201004/73145
ISSN
1359-8368
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE