Developing the dielectric mechanisms of polyetherimide/multiwalled carbon nanotube/(Ba(0.8)Sr(0.2))(Ti(0.9)Zr(0.1))O(3 )composites

Various amounts of multiwalled carbon nanotubes [MWNTs] were embedded into polyetherimide [PEI] to form PEI/MWNT composites, and their dielectric properties were measured at 1 MHz. The Lichtenecker mixing rule was used to find a reasonable dielectric constant for the MWNTs used in this study. The di...

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Detalles Bibliográficos
Autores principales: Su, Chean-Cheng, Wu, Chia-Ching, Yang, Cheng-Fu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer 2012
Materias:
Nano Idea
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3305553/
https://www.ncbi.nlm.nih.gov/pubmed/22340201
http://dx.doi.org/10.1186/1556-276X-7-132
Descripción
Sumario:Various amounts of multiwalled carbon nanotubes [MWNTs] were embedded into polyetherimide [PEI] to form PEI/MWNT composites, and their dielectric properties were measured at 1 MHz. The Lichtenecker mixing rule was used to find a reasonable dielectric constant for the MWNTs used in this study. The dielectric constants of the developed composites were significantly increased, and the loss tangents were significantly decreased as 2.0 wt.% (Ba(0.8)Sr(0.2))(Ti(0.9)Zr(0.1))O(3 )ceramic powder [BSTZ] was added to the PEI/MWNTs to form PEI/MWNT/BSTZ composites. The Lichtenecker and Yamada mixing rules were used to predict the dielectric constants of the PEI/MWNT and PEI/MWNT/BSTZ composites. Equivalent electrical conduction models of both composites were established using the two mixing rules. In addition, the theoretical bases of the two mixing rules were used to explain the measured results for the PEI/MWNT and PEI/BSTZ/MWNT composites.

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