Dielectric properties of nanosilica filled epoxy nanocomposites

被引：16
|
作者：
Veena, M. G. [1 ]
Renukappa, N. M. [1 ]
Shivakumar, Kunigal N. [2 ]
Seetharamu, S. [3 ]
机构：
[1] Sri Jayachamarajendra Coll Engn, Dept Elect & Commun Engn, Mysuru 570006, India
[2] N Carolina Agr & Tech State Univ, Dept Mech Engn, Ctr Composite Mat Res, Greensboro, NC 27411 USA
[3] Cent Power Res Inst, Mat Technol Div, Bengaluru 560080, India
来源：
SADHANA-ACADEMY PROCEEDINGS IN ENGINEERING SCIENCES | 2016年 / 41卷 / 04期
关键词：
AC conductivity; sea water aging; dielectric properties; dispersion; epoxy nanocomposites; MATRIX; RESIN;
D O I：
10.1007/s12046-016-0473-z
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper presents the development of epoxy-silica nanocomposites and characterized for dielectric properties. The effect of nanosilica loading (0-20 wt%), frequency, temperature and sea water aging on these properties was studied. Transmission electron microscopy (TEM) analysis of the samples showed an excellent dispersion. However, at higher silica loading TEM showed inter-contactity of the particles. The dielectric constant (epsilon') increased with silica loading and reached an optimum at about 10 wt%. The epsilon' of the nanocomposites showed linear decrease with frequency whereas AC conductivity (sigma(ac)) increases. The sigma(ac) and epsilon' increased marginally with temperature and sea water aging.
引用
收藏
页码：407 / 414
页数：8
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