Numerical simulation of the effective permittivity of low-density polyethylene composite filled by carbon black

The effective permittivity of low-density polyethylene with the conductive carbon black (CB) was modelled by COMSOL. The impact of CB content on the electric properties of the composites with different geometry of the inclusions was investigated. The modelling outcomes evidenced that the simulation...

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Bibliographic Details
Published in:IET Nanodielectrics 2019-12, Vol.2 (4), p.129-134
Main Authors: Azizi, Sohrab, David, Éric, Fréchette, Michel F, Ouellet-Plamondon, Claudiane M
Format: Article
Language:English
Subjects:
adsorbed water
carbon
Carbon black
CB particles
Composite materials
COMSOL
conductive carbon black
Density
effective permittivity
Electric fields
electric properties
electrical conductivity
filled polymers
Geometry
Inclusions
Low density polyethylenes
low-density polyethylene composite
low-filler concentration
Moisture effects
numerical simulation
Particulate composites
Permittivity
Polyethylene
Polyethylenes
Research Article
Scanning electron microscopy
Simulation
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Summary:The effective permittivity of low-density polyethylene with the conductive carbon black (CB) was modelled by COMSOL. The impact of CB content on the electric properties of the composites with different geometry of the inclusions was investigated. The modelling outcomes evidenced that the simulation was in good agreement with the experiment results at low-filler concentration. The effect of moisture on the effective permittivity of the composites was also investigated. A thin layer of adsorbed water on the surface of the CB particles was found to significantly increase the conductivity, which is in agreement with experimental results.
ISSN:2514-3255
2514-3255
DOI:10.1049/iet-nde.2019.0017