journal article·2020-03

On the electrical conductivity of composites with a polymeric matrix and a non-uniform concentration of carbon nanotubes

Miguel A.S. Matos, Vito L. Tagarielli, Silvestre T. Pinho

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Abstract

Abstract We present a multiscale modelling approach to explore the effects of a non-uniform concentration of carbon nanotubes (CNTs) on the electrical conductivity of CNT-polymer composites. Realistic three-dimensional representative volume elements (RVEs) are generated from a two-dimensional CNT concentration map, obtained via microscopy techniques. The RVEs capture the measured probability density function of the CNT concentration and include a length-scale to represent the details of the spatial distribution of the concentration. The homogenized conductivity of the RVEs is computed via multiscale FE analyses for different values of such length-scale, and it is compared to measurements. The modelling strategy is then used to explore the effects of the microstructural features of these materials on their electrical conductivity.
Source: openaire · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Carbon Nanotubes in Composites · Composite Material Mechanics · Polymer crystallization and properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

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