Tunneling Conductivity and Piezoresistivity of Composites Containing Randomly Dispersed Conductive Nano-Platelets

被引：118

作者：

Oskouyi, Amirhossein Biabangard ^{[1
]}

Sundararaj, Uttandaraman ^{[2
]}

Mertiny, Pierre ^{[1
]}

机构：

[1] Univ Alberta, Dept Mech Engn, Adv Composite Mat Engn Grp, Edmonton, AB T6G 2G8, Canada

[2] Univ Calgary, Dept Chem & Petr Engn, Calgary, AB T2N 1N4, Canada

来源：

MATERIALS | 2014年 / 7卷 / 04期

关键词：

nanocomposites; electrical properties; modeling; piezoresistivity effect; MONTE-CARLO MODEL; PERCOLATION-THRESHOLD; ELECTRICAL-CONDUCTIVITY; PHYSICAL-PROPERTIES; GRAPHITE; BEHAVIOR; RESISTIVITY; SIMULATION; PARTICLES; WAVINESS;

D O I：

10.3390/ma7042501

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study, a three-dimensional continuum percolation model was developed based on a Monte Carlo simulation approach to investigate the percolation behavior of an electrically insulating matrix reinforced with conductive nano-platelet fillers. The conductivity behavior of composites rendered conductive by randomly dispersed conductive platelets was modeled by developing a three-dimensional finite element resistor network. Parameters related to the percolation threshold and a power-low describing the conductivity behavior were determined. The piezoresistivity behavior of conductive composites was studied employing a reoriented resistor network emulating a conductive composite subjected to mechanical strain. The effects of the governing parameters, i.e., electron tunneling distance, conductive particle aspect ratio and size effects on conductivity behavior were examined.

引用

页码：2501 / 2521

页数：21