Preparation and Electrical Properties of the Polyimide/Multi-Walled Carbon Nanotubes (MWNTs) Nanocomposites

Ming Yan Zhang; Xiao Ying Zhu; Peng He Diao; Wen Jia Wang; Xiao Dong Li

doi:10.4028/www.scientific.net/MSF.675-677.1237

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HomeMaterials Science ForumMaterials Science Forum Vols. 675-677Preparation and Electrical Properties of the...

Preparation and Electrical Properties of the Polyimide/Multi-Walled Carbon Nanotubes (MWNTs) Nanocomposites

Abstract:

The polyimide/multi-walled carbon nanotubes (MWNTs) nanocomposite films were prepared by means of ultrasonic blending and in-situ polymerization. MWNTs were modified with mixed strong acid in order to improve the chemical compatibility between polyimide matrix and MWNTs. The effects of the incorporation of MWNTs on the electrical property were researched in this study. The results showed that with the increase of the content of acid-modified MWNTs, the dielectric strength decreased gradually and had a sharp drop when the addition content was close to 0.6 wt%, the dielectric constant and the dielectric loss factor increased obviously. With the rise of the test frequency, the dielectric constant declined slowly and the dielectric loss factor increased. The corona resistance time of the nanocomposite films was all higher than that of the pure polyimide.

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Periodical:

Materials Science Forum (Volumes 675-677)

Pages:

1237-1240

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.675-677.1237

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Online since:

February 2011

Authors:

Ming Yan Zhang, Xiao Ying Zhu, Peng He Diao, Wen Jia Wang, Xiao Dong Li

Keywords:

Electrical Properties, Multi-Walled Carbon Nanotube (MWCNT), Polyimide (Pl)

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