Effect of fluorination on the mechanical behavior and electromagnetic interference shielding of MWCNT/epoxy composites

MWCNTs were fluorinated using various fluorine concentrations and used as a reinforcing material to improve the mechanical properties and electromagnetic shielding effect of epoxy composites. •Surface treatment – fluorination of MWCNTs is proposed to improve the MWCNTs/epoxy composites properties.•T...

Full description

Saved in:
Bibliographic Details
Published in:Applied surface science 2016-04, Vol.369, p.189-195
Main Authors: Lee, Si-Eun, Lee, Man Young, Lee, Min-Kyung, Jeong, Euigyung, Lee, Young-Seak
Format: Article
Language:English
Subjects:
Carbon nanotube
Dispersions
Electrical properties
Electromagnetic interference shielding
Fluorination
Mechanical properties
Multi wall carbon nanotubes
Polymer matrix composites
Polymer-matrix composites (PMCs)
Surface treatments
Tensile strength
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:MWCNTs were fluorinated using various fluorine concentrations and used as a reinforcing material to improve the mechanical properties and electromagnetic shielding effect of epoxy composites. •Surface treatment – fluorination of MWCNTs is proposed to improve the MWCNTs/epoxy composites properties.•The fluorine functional groups on surface of fluorinated MWCNTs lead to improved interfacial interactions between the MWCNTs and epoxy matrix.•The mechanical properties and EMI shielding effect of the fluorinated MWCNTs/epoxy composites were improved. Multi-walled carbon nanotube (MWCNT)/epoxy composites were prepared using MWCNT fluorinated to different extents. The mechanical properties, fracture surface morphologies and electromagnetic interference shielding efficiency (EMI-SE) of these composites were evaluated for epoxy matrices containing MWCNT with degrees of fluorination. The tensile strengths of the MWCNT/epoxy composites improved by 31% with treated MWCNT compared to that of the epoxy composites with untreated MWCNT. The EMI-SE values of the fluorinated MWCNT/epoxy composites improved up to 26% with increasing fluorination extent. The mechanical and electrical properties enhancement of the composites were attributed to the fluorinated MWCNT, which improved both the dispersion of the MWCNT in epoxy matrix and interfacial interactions between the MWCNT and the epoxy matrix.
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2016.01.266