Paper Title:
Dielectric Composites Containing Core@shell Structure Particles
  Abstract

The composites with high permittivity and low dielectric loss were obtained. The fillers were the core@shell structure of the self-passivated aluminum (Al) particles (denoted as Al@Al2O3). The Al2O3 interface between Al and polymer matrix played important role in tailored dielectric properties of composite. The transmission electron microscopy (TEM) indicated that the Al2O3 shell was 2.7 nm. The self-passivated Al/polystrene (PS) composite displayed that the permittivity almost independed on frequency in wide range (102-107 Hz) and retained high-steady level, which is 27.4 times higher than that of a neat PS. On the other hand, the effect of size ratio value of core/shell in core@shell structure filler on dielectric performance of self-passivated Al/PS composites was also explained. The insulating oxide layer (Al2O3) restricts the electron transfer between Al particles. Moreover, the self-passivated Al/PS composites exhibited very steady dielectric performance at the wide temperature range (-60 ~60 °C). The composites have potential application in dielectric materials.

  Info
Periodical
Advanced Materials Research (Volumes 239-242)
Edited by
Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He
Pages
3113-3118
DOI
10.4028/www.scientific.net/AMR.239-242.3113
Citation
C. Yang, H. S. Song, D. B. Liu, "Dielectric Composites Containing Core@shell Structure Particles", Advanced Materials Research, Vols. 239-242, pp. 3113-3118, 2011
Online since
May 2011
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: Xin Fan
Chapter 3: Micro/Nano Materials
Abstract:Blends of Poly(L-lactide) (PLLA) and nano-SiO2 powder were prepared via solution mixing. Effect of nano-SiO2 particles on the crystallinity...
367
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