Hybrid composites of ABS with carbonaceous fillers for electromagnetic shielding applications

ABSTRACT This work evaluates the influence of two types of carbonaceous fillers, carbon black (CB) and carbon nanotubes (CNTs), on the electrical, electromagnetic, and rheological properties of composites based on poly(acrylonitrile‐co‐butadiene‐co‐styrene) (ABS) prepared by the melt mixing. Electri...

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Bibliographic Details
Published in:Journal of applied polymer science 2018-08, Vol.135 (29), p.n/a
Main Authors: Schmitz, Débora P., Silva, Tamara I., Ramoa, Sílvia D. A. S., Barra, Guilherme M. O., Pegoretti, Alessandro, Soares, Bluma G.
Format: Article
Language:English
Subjects:
Butadiene
Carbon black
Carbon nanotubes
Conductivity
dielectric properties
Electrical resistivity
Electromagnetic interference
Electromagnetic shielding
Fillers
Hybrid composites
Materials science
Melt flow index
Nanotubes
Polymer matrix composites
Polymers
Rheological properties
structure–property relationships
thermoplastics
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Summary:ABSTRACT This work evaluates the influence of two types of carbonaceous fillers, carbon black (CB) and carbon nanotubes (CNTs), on the electrical, electromagnetic, and rheological properties of composites based on poly(acrylonitrile‐co‐butadiene‐co‐styrene) (ABS) prepared by the melt mixing. Electrical conductivity, electromagnetic shielding efficiency (EMI SE) in the X‐band frequency range (8–12.4 GHz), and melt flow index (MFI) results showed that ABS/CNT composites exhibit higher electrical conductivity and EMI SE, but lower MFI when compared to ABS/CB composites. The electrical conductivity of the binary composites showed an increase of around 16 orders of magnitude, when compared to neat ABS, for both fillers. Binary composites with 5 and 15 wt % of filler showed an EMI SE of, respectively, −44 and −83 dB for ABS/CNT, and −9 and −34 dB for ABS/CB. MFI for binary composites with 5 wt % were 15.45 and 0.55 g/10 min for CB and CNT, respectively. Hybrid composites ABS/CNT.CB with 3 wt % total filler and fraction 50:50 and 75:25 showed good correlation between EMI SE and MFI. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46546.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.46546