Electrical percolation networks of carbon nanotubes in a shear flow.
Phys Rev E Stat Nonlin Soft Matter Phys
; 85(1 Pt 1): 011143, 2012 Jan.
Article
em En
| MEDLINE
| ID: mdl-22400548
ABSTRACT
The effect of shear on the electrical percolation network of carbon nanotube (CNT)-polymer composites is investigated using computer simulations. Configurations of CNTs in a simple shear, obtained by using Monte Carlo simulations, are used to locate the electrical percolation network of CNTs and calculate the electric conductivity. When exposed to the shear, CNTs align parallel to the shear direction and the electrical percolation threshold CNT concentration decreases. Meanwhile, after a certain period of the shear imposition above a critical shear rate, CNTs begin to form an aggregate and the percolating network of CNTs is broken, thus decreasing the electric conductivity significantly. We also construct quasiphase diagrams for the aggregate formation and the electrical percolation network formation to investigate the effect of the shear rate and CNT concentration.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Reologia
/
Modelos Moleculares
/
Cristalização
/
Nanotubos de Carbono
/
Galvanoplastia
/
Modelos Químicos
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article