AI Article Synopsis
- Introducing a segregated network of fillers in polypropylene composites can enhance the conductive properties of graphene-based materials while reducing costs.
- The study shows that composites with a segregated GNP network had a lower electrical percolation threshold (2.9 wt%) compared to those with randomly dispersed GNPs.
- The interconnected GNP clusters improved thermal conductivity to 4.05 W/m∙K at just 10 wt% filler content, making the segregated filler network effective for achieving high conductivity with less material.
Article Abstract
Introducing a segregated network constructed through the selective localization of small amounts of fillers can be a solution to overcome the limitations of the practical use of graphene-based conductive composites due to the high cost of fillers. In this study, polypropylene composites filled with randomly dispersed GNPs and a segregated GNP network were prepared, and their conductive properties were investigated according to the formation of the segregated structure. Due to the GNP clusters induced by the segregated structure, the electrical percolation threshold was 2.9 wt% lower than that of the composite incorporating randomly dispersed GNPs. The fully interconnected GNP cluster network inside the composite contributed to achieving the thermal conductivity of 4.05 W/m∙K at 10 wt% filler content. Therefore, the introduction of a segregated filler network was suitable to simultaneously achieve excellent electrical and thermal conductivities at a low content of GNPs.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10420153 | PMC |
| http://dx.doi.org/10.3390/ma16155329 | DOI Listing |
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