Simulation of Electrical Resistivity of Carbon Black Filled Rubber under Elongation

It has been known that the carbon black (CB) network is responsible for the electrical and mechanical behaviors of filled rubber. Due to the complexity involved in the filled rubber in relation to the conductive mechanism of the CB network, there has been little work concerned with simulation of the...

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Bibliographic Details
Published in:Journal of macromolecular science. Physics 2007-05, Vol.46 (3), p.561-567
Main Authors: Xie, Zhimin, Yum, Young-Jin, Lee, Chul-Kyoung
Format: Article
Language:English
Subjects:
Applied sciences
Carbon black
carbon black network
circuit
Composites
Electrical resistivity
Elongation
Exact sciences and technology
filled rubber
Forms of application and semi-finished materials
Polymer industry, paints, wood
resistivity
Rubber
Simulation
Technology of polymers
tunneling conduction mechanism
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Summary:It has been known that the carbon black (CB) network is responsible for the electrical and mechanical behaviors of filled rubber. Due to the complexity involved in the filled rubber in relation to the conductive mechanism of the CB network, there has been little work concerned with simulation of the electrical behavior at large strains. Based upon an infinite circuit model, the electrical resistivity of CB filled rubber under elongation is simulated. For CB (N330) filled natural rubber with volume fraction of 27.5%, the simulated electrical resistivity increases with elongation at small stains, corresponding to the breakup of the agglomerates. The reduction in resistivity at larger strains corresponds to the decrease of the junction width, which results in a decrease of the contact resistance. Good agreement is found between the simulations and the experimental data available in the literature. The simulated results confirm the effects of the breakdown of the CB network and the alignment of CB aggregates under strain on the electrical resistivity.
ISSN:0022-2348
1525-609X
DOI:10.1080/00222340701257893