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Electrical Property of Carbon Nanotubes/Epoxy Resin/Polyetherimide Composites with Inverted-Phase Structure

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Abstract:

Carbon nanotubes (CNTs) selective dispersion and electrical properties of one kind of thermoplastic/thermosetting polymer composite consisting of polyetherimide (PEI) and epoxy resin (EP) were investigated. The results showed that, in the CNTs/EP/PEI composite, under control of thermodynamics, CNTs are preferably dispersed in PEI-rich phase, and an inverted phase structure is obtained with continuous PEI-rich phase and separated EP phase as globular shapes. And this microstructure helps to achieve a very low percolation threshold of 0.3wt% CNTs in the composite. The composites at CNTs contents over the percolation threshold, have a high dielectric constant of around 100, which first decreases slightly and the drop rapidly into a platform with increasing frequency from beginning.

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Periodical:

Advanced Materials Research (Volumes 652-654)

Pages:

56-59

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.652-654.56

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Online since:

January 2013

Authors:

Dong Yong Xi, Chuan Guo Ma, Ming Liu, Rui Shi

Keywords:

Carbon Nanotube (CN), Electrical Properties, Epoxy Resin (ER), Polyetherimide

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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