Polímeros: Ciência e Tecnologia
http://app.periodikos.com.br/journal/polimeros/article/doi/10.1590/0104-1428.2016
Polímeros: Ciência e Tecnologia
Review Article

Modelos de percolação elétrica aplicados para compósitos poliméricos condutores

Percolation electrical models applied to conductive polymers composites

Coelho, Paulo Henrique da Silva Leite; Morales, Ana Rita

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Resumo

O presente artigo apresenta a aplicação e adequação dos modelos de percolação elétrica em trabalhos experimentais e teóricos da literatura para compósitos poliméricos condutores. Foi realizado um levantamento das publicações referentes aos modelos estudados para os diferentes tipos de cargas condutoras mais aplicadas na preparação destes compósitos, tais como pós metálicos, grafite, negro de fumo, nanofibras e nanotubos de carbono. A discussão está apresentada quanto à adequação dos modelos ao comportamento dos compósitos na influência das cargas nas propriedades elétricas de matrizes poliméricas.

Palavras-chave

compósitos poliméricos, condutividade elétrica, modelos de percolação.

Abstract

This paper presents the application and adjustment of electrical percolation models in conductive polymer composites. Different models have been proposed for different types of conductive fillers applied in composites preparation, such as metal powders, graphite, black carbon, carbon nanotubes and nanofibers. The discussion was carried out considering the consistency of the model on the behavior of these fillers and their influence on the electrical properties of polymer matrices.

Keywords

polymer composites, electrical conductivity, percolation models.

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