Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 104, Issue -, Pages 129-138Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2017.10.023
Keywords
Multiwalled carbon nanotubes (MWCNTs); Bucky paper; Dynamic mechanical analysis; Storage modulus (E'); Glass transition temperature (T-g); EMI shielding
Funding
- Grants-in-Aid for Scientific Research [16H02424] Funding Source: KAKEN
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Thermomechanical and electrical properties of multiwalled carbon nanotubes (MWCNTs) bucky paper reinforced epoxy laminar composites have been studied. Incorporation of bucky paper in epoxy matrix led to improvement in thermomechanical properties but it reduced through-plane electrical conductivity. Therefore, 0.05 wt.% of MWCNTs is incorporated as secondary network in epoxy matrix to improve the electrical conductivity. The storage modulus for a 0.05 wt.% dispersed MWCNTs in epoxy resin impregnated 20 plies of bucky paper based composites (20Ply.05) was 4.84 GPa as compared to 2.24 GPa of pure epoxy. The glass transition temperature of 20Ply.05 laminar composite reaches to 191.6 degrees C as compared to pure epoxy (168.5 degrees C). The increment in electrical conductivity (792%) is reflected in improved electromagnetic shielding effectiveness (SE) over a wide frequency range of X & Ku band. The SE of more than 50 dB for 20Ply.05 laminar composite in both the bands was obtained. (C) 2017 Elsevier Ltd. All rights reserved.
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