A New Ultra Fast Conduction Mechanism in Insulating Polymer Nanocomposites
Joint Authors
Dissado, L. A.
Fabiani, D.
Xu, M.
Montanari, G. C.
Krivda, A.
Source
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-05-19
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Engineering Sciences and Information Technology
Chemistry
Abstract EN
A brand new phenomenon, namely, electrical conduction via soliton-like ultra fast space charge pulses, recently identified in unfilled cross-linked polyethylene, is shown for the first time to occur in insulating polymer nanocomposites and its characteristics correlated with the electromechanical properties of nanostructured materials.
These charge pulses are observed to cross the insulation under low electrical field in epoxy-based nanocomposites containing nanosilica particles with relative weights of 1%, 5%, 10%, and 20% at speeds orders of magnitude higher than those expected for carriers in insulating polymers.
The characteristics of mobility, magnitude and repetition rate for both positive and negative charge pulses are studied in relation to nanofiller concentration.
The results show that the ultra fast charge pulses (packets) are affected significantly by the concentration of nanoparticles.
An explanation is presented in terms of a new conduction mechanism where the mechanical properties of the polymer and movement of polymer chains play an important role in the injection and transport of charge in the form of pulses.
Here, the charge transport is not controlled by traps.
Instead, it is driven by the contribution of polarization and the resultant electromechanical compression, which is substantially affected by the introduction of nanoparticles into the base polymer.
American Psychological Association (APA)
Xu, M.& Montanari, G. C.& Fabiani, D.& Dissado, L. A.& Krivda, A.. 2011. A New Ultra Fast Conduction Mechanism in Insulating Polymer Nanocomposites. Journal of Nanotechnology،Vol. 2011, no. 2011, pp.1-11.
https://search.emarefa.net/detail/BIM-513742
Modern Language Association (MLA)
Xu, M.…[et al.]. A New Ultra Fast Conduction Mechanism in Insulating Polymer Nanocomposites. Journal of Nanotechnology No. 2011 (2011), pp.1-11.
https://search.emarefa.net/detail/BIM-513742
American Medical Association (AMA)
Xu, M.& Montanari, G. C.& Fabiani, D.& Dissado, L. A.& Krivda, A.. A New Ultra Fast Conduction Mechanism in Insulating Polymer Nanocomposites. Journal of Nanotechnology. 2011. Vol. 2011, no. 2011, pp.1-11.
https://search.emarefa.net/detail/BIM-513742
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-513742