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Materials Research

versão impressa ISSN 1516-1439versão On-line ISSN 1980-5373

Resumo

COELHO, Paulo Henrique da Silva Leite; ARMELLINI, Victor Antonio de Deus  e  MORALES, Ana Rita. Assessment of Percolation Threshold Simulation for Individual and Hybrid Nanocomposites of Carbon Nanotubes and Carbon Black. Mat. Res. [online]. 2017, vol.20, n.6, pp.1638-1649.  Epub 18-Set-2017. ISSN 1980-5373.  https://doi.org/10.1590/1980-5373-mr-2016-1084.

Modeling electrical conductivity of polymer composites with conductive fillers has great applicability to predict conductive materials behavior. In this study, the electrical behavior of simple and hybrid systems prepared from Carbon Black (CB) and Carbon Nanotubes (CNT) was studied. There have been few advances reported in the literature regarding the modeling of hybrid systems, which motivated the development of this study. More specifically, a program was developed with the intention to describe the electric percolation threshold and the effect of synergism between the conductive fillers. Simulation was performed using the Monte Carlo method and Fortran programming language, considering concentration and geometry of conductive fillers to the system in two dimensions. Finally, simulation results were compared with the experimental results and this method proved to be effective in predicting the systems percolation threshold, being an important contribution to predict material behavior, which allows reducing the number of samples to be prepared in an experimental study.

Palavras-chave : Percolation; Polymer nanocomposites; Simulation; Hybrid fillers; Monte Carlo method.

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