Deformation mechanism of epoxy/clay nanocomposite

被引：96

作者：

Akbari, B.

Bagheri, R. ^{[1
]}

机构：

[1] Sharif Univ Technol, Dept Mat Sci & Engn, Polymer Mat Res Grp, Tehran 11369466, Iran

[2] SAPCO, Ctr Mat & Proc Engn, Tehran 13185743, Iran

来源：

EUROPEAN POLYMER JOURNAL | 2007年 / 43卷 / 03期

关键词：

nanocomposite; epoxy; deformation mechanism; strength;

D O I：

10.1016/j.eurpolymj.2006.11.028

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 [高分子化学与物理]; 080501 [材料物理与化学]; 081704 [应用化学];

摘要：

Polymer-layered silicate nanocomposites have been noticed recently due to their outstanding properties. The mechanical properties and deformation mechanism of epoxy/montmorillonite nanocomposites under compressive and flexural loadings were investigated. A reduction in compressive and flexural yield stress and also glass transition temperature with increasing the amount of organoclay was observed. This change in mechanical behavior of epoxy can be explained with observation of plastic deformation mechanism. The study of deformation mechanism revealed that presence of organoclay accelerates shear yielding in epoxy. Microscopic evaluation illustrated that nanoparticles in this system act as initiation sites for shear bands, and thus, enable the epoxy to undergo massive shear yielding. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：782 / 788

页数：7

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