Facile Preparation of Lightweight Microcellular Polyetherimide/Graphene Composite Foams for Electromagnetic Interference Shielding
Chinese Academy of Sciences · Ningbo Institute of Industrial Technology · +1 more institution
Abstract
We report a facile approach to produce lightweight microcellular polyetherimide (PEI)/graphene nanocomposite foams with a density of about 0.3 g/cm3 by a phase separation process. It was observed that the strong extensional flow generated during cell growth induced the enrichment and orientation of graphene on cell walls. This action decreased the electrical conductivity percolation from 0.21 vol % for PEI/graphene nanocomposite to 0.18 vol % for PEI/graphene foam. Furthermore, the foaming process significantly increased the specific electromagnetic interference (EMI) shielding effectiveness from 17 to 44 dB/(g/cm3). In addition, PEI/graphene nanocomposite foams possessed low thermal conductivity of…
Citation impact
- FWCI
- 15.83
- Percentile
- 100%
- References
- 36
Authors
6- JLJianqiang LingCorresponding
Chinese Academy of Sciences, Ningbo Institute of Industrial Technology, Ningbo University
- WZWentao Zhai
Chinese Academy of Sciences, Ningbo Institute of Industrial Technology
- WFWeiwei Feng
Chinese Academy of Sciences, Ningbo Institute of Industrial Technology
- BSBin Shen
Chinese Academy of Sciences, Ningbo Institute of Industrial Technology
- JZJianfeng Zhang
Ningbo University
Topics & keywords
- Materials science
- Polyetherimide
- Electromagnetic shielding
- Composite number
- Graphene
- Composite material
- Electromagnetic interference
- Nanotechnology