Microstructural image analysis and structure-electrical conductivity relationship of single- and multiple-filler conductive composites

作者：Dweiri Radwan^*; Sahari Jaafar

来源：Composites Science and Technology, 2008, 68(7-8): 1679-1687.

DOI：10.1016/j.compscitech.2008.02.006

• composites
• electrical properties
• modelling
• scanning electron microscopy

The electrical conductivity of polypropylene/graphite (PP/G) composites and polypropylene/graphite/carbon black (PP/G/CB) was investigated in this paper. The conductivity experimental data of PP/G composites was correlated to theoretical models, which exist in the literature, and the results showed higher values of the exponent t compared to the expected typical values. Moreover, these analytical models were unable to describe the electrical behaviour for multiple-filler conductive composites such as PP/G/CB composites. A 2D computer simulation to numerically compute the electrical conductivity based on digital image analysis was found to be somewhat useful to describe the mechanism of conduction in PP/G/CB composites and to determine the critical factors in developing high electrically conductive composites.

• 出版日期2008-6