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Fabrication and Dielectric Properties of CNTs/SiO2 Composites

Journal Key Engineering Materials (Volumes 280 - 283)
Volume High-Performance Ceramics III
Edited by Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li
Pages 123-126
DOI 10.4028/www.scientific.net/KEM.280-283.123
Citation Chang Shu Xiang et al., 2007, Key Engineering Materials, 280-283, 123
Online since February, 2007
Authors Chang Shu Xiang, Xiao Mei Shi, Yu Bai Pan, Jing Kun Guo
Keywords Carbon Nanotube (CNT), Composite, Dielectric Properties, SiO2
Abstract

Stable and disperse carbon nanotubes (CNTs) aqueous solution was prepared by using cetyltrimethylammonium bromide (C16TMAB) as dispersing agent and zeta potential of CNTs solution were measured to quantitatively characterize the stability of CNTs in C16TMAB aqueous solution. The CNTs /SiO2 composites were fabricated with composite powders synthesized by rapid Sol-gel method and sintered by hot-pressing technique. The electric and dielectric properties of the composites were measured and the microstructure of CNTs and composites were investigated by Field emission scanning electron microscope (FSEM) and transmission electron microscopy (TEM). The mechanisms had been investigated to explain the effect of the CNT compositions on the electric and dielectric properties of CNTs /SiO2 composites in this paper.

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