Paper Title:
Dielectric Properties of Carbon-Materials-Filled Composites Characterized by Terahertz Time-Domain Spectroscopy
  Abstract

The optical properties of composites, formed by filling the high density polyethylene (HDPE) with carbon black (CB), multi-walled carbon nanotubes (MWNTs) and fullerene (C60), respectively, in the frequence region from 0.3 to 2.0 terahertz (THz) were characterized with THz time-domain spectroscopy (THz-TDS). It is found that the optical parameters and the details of their variation with frequence and filler concentration are significantly different for different kinds of carbon materials. The MWNTs filled composites have the biggest absorption coefficient value, refractive index and real conductivity. The C60/HDPE composite shows very little changes in absorption and refractive index compared to that of the HDPE even at a filler-content of 12.3% in volume fraction. These phenomena are related to the special properties of the fillers as well as their particulate structures, such as aspect ratio, particle size, and aggregate structure, etc. The results are analyzed by using Cole-Cole theory of dipole relaxation under the assumption that carbon particles dispersed in the matrix behave like dipoles.

  Info
Periodical
Advanced Materials Research (Volumes 295-297)
Chapter
Chapter 1: Materials Properties
Edited by
Pengcheng Wang, Liqun Ai, Yungang Li, Xiaoming Sang and Jinglong Bu
Pages
1408-1413
DOI
10.4028/www.scientific.net/AMR.295-297.1408
Citation
X. L. Chen, X. Chen, D. S. Li, Z. Y. Zhu, "Dielectric Properties of Carbon-Materials-Filled Composites Characterized by Terahertz Time-Domain Spectroscopy", Advanced Materials Research, Vols. 295-297, pp. 1408-1413, 2011
Online since
July 2011
Keywords
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: T. Jeevananda, O.G. Palanna, Joong Hee Lee, Siddaramaiah, C. Ranganathaiah
Abstract:The present study investigates the effect of the carboxylated multi-walled carbon nanotube (0~3 wt %) content on the electrical and thermal...
59
Authors: Xue Hai Fan, Guo Min Xiao
Chapter 2: Applied Chemical Engineering
Abstract:Multi-walled carbon nanotubes (MWCNTs), potassium dichromate (K2Cr2O7) and sulphuric acid were used for the preparation of Cr/MWCNT composite...
1053
Authors: Fabia Galantini, Sabrina Bianchi, Valter Castelvetro, Irene Anguillesi, Giuseppe Gallone
Chapter 1: EAP Materials and Analysis of Physical Mechanisms
Abstract:Among the broad class of electro-active polymers, dielectric elastomer actuators represent a rapidly growing technology for electromechanical...
41
Authors: Zhen Chen, Ye Mao Han, Min Zhou, Rong Jin Huang, Yuan Zhou, Lai Feng Li
Abstract:In the present study, the glass microsphere dispersed Bi-Sb thermoelectric materials have been fabricated through mechanical alloying...
120
Authors: Mi Dan Li, Yao Lu, Lu Lu Feng, Huan Niu, Ya Wen Kong
Chapter 2: Research on Materials,Mechanics and Technologies
Abstract:Composites made from phenolic resin are filled with conductive filler mixtures containing copper powders, natural graphite powders and carbon...
120