Morphology and mechanical behavior of exfoliated epoxy/α-zirconium phosphate nanocomposites

被引：111

作者：

Boo, W. J.

Sun, L. Y.

Liu, J.

Clearfield, A.

Sue, H. -J. ^{[1
]}

Mullins, M. J.

Pham, H.

机构：

[1] Texas A&M Univ, Polymer Technol Ctr, Dept Mech Engn, College Stn, TX 77843 USA

[2] Texas A&M Univ, Dept Chem, College Stn, TX 77843 USA

[3] Dow Chem Co USA, Thermosets R&D, Freeport, TX USA

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2007年 / 67卷 / 02期

基金：

美国国家科学基金会;

关键词：

epoxy nanocomposite; alpha-zirconium phosphate; fracture behavior; degree of exfoliation; fracture toughness;

D O I：

10.1016/j.compscitech.2006.08.012

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

The morphology and mechanical properties of synthetic alpha-zirconium phosphate (alpha-ZrP) based epoxy nanocomposites with 1 and 2 vol% of alpha-ZrP loadings were investigated. The state of exfoliation and dispersion were confirmed by X-ray diffraction and direct transmission electron microscopy imaging at various locations in the samples. Significant improvements in tensile modulus and tensile strength were observed. In this study, it is found that the fracture toughness values of the exfoliated epoxy nanocomposite systems are comparable to that of the neat epoxy. Detailed fracture mechanisms investigation indicates that no sign of crack deflection or nanoplatelet debonding is observed. Only a straight crack path is present. The nanoplatelets are broken into two halves as the crack propagates through them, indicating an existence of strong bonding between the nanoplatelet and epoxy matrix. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：262 / 269

页数：8

共 29 条

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