Thermal, Mechanical, and Dielectric Properties of Polystyrene/Expanded Graphite Nanocomposites

被引：68

作者：

Goyal, R. K. ^{[1
]}

Jagadalle, P. A. ^{[2
]}

Mulik, U. P. ^{[1
]}

机构：

[1] Ctr Mat Elect Technol, Pune 411008, Maharashtra, India

[2] Annasaheb Magar Coll, Dept Chem, Pune 411028, Maharashtra, India

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2009年 / 111卷 / 04期

关键词：

nanocomposite; conductivity; modulus; dielectric constant; loss tangent; COMPOSITES;

D O I：

10.1002/app.29042

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We herewith report the thermal, mechanical (modulus), and dielectric properties of polystyrene (PS)/expanded graphite (EG) nanocomposites fabricated by a simple technique of dispersing EG (Lip to 2.5 vol %) in PS matrix Via solution Method followed by hot pressing. The thermal stability and char yield of the nanocomposites are improved marginally. The modulus, electrical conductivity dielectric constant, and dielectric loss tangent of the nanocomposites are significantly increased with EG content. The modulus of the nanocomposites increases by about twofold at 30 degrees C compared with that of pure PS. The dielectric constant and the loss tangent of nanocomposites are increased Lip to 13-fold and 200-fold compared with that of pure PS, respectively, at 1 MHz and varied with frequency. (C) 2008 Wiley Periodicals, Inc. J Appl Polym Sci 111: 2071-2077, 2009

引用

页码：2071 / 2077

页数：7

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