Thermal stability and water uptake of high performance epoxy layered silicate nanocomposites

被引：214

作者：

Becker, O

Varley, RJ

Simon, GP ^{[1
]}

机构：

[1] Monash Univ, Dept Mat Engn, Sch Phys & Mat Engn, Clayton, Vic 3800, Australia

[2] CSIRO, Clayton, Vic 3169, Australia

来源：

EUROPEAN POLYMER JOURNAL | 2004年 / 40卷 / 01期

关键词：

D O I：

10.1016/j.eurpolymj.2003.09.008

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Intercalated and ordered exfoliated layered silicate nanocomposites based on three different epoxy resins of different structures and functionalities were synthesized using an octadecyl ammonium modified smectite clay. Water uptake properties of series of each nanocomposite system with different organoclay concentrations were determined by gravimetric measurements over a period of time. The diffusion coefficients were determined and the effect of the absorbed water on the thermal relaxations investigated. The equilibrium water uptake of all nanocomposites was reduced compared to the neat epoxy system but the rate of water diffusion remained unaffected. Further, the thermal stability of the different nanocomposites was determined using thermogravimetric analysis. The nanocomposites showed slightly reduced thermal stability, as indicated by a slight decrease in onset of degradation, whilst the final char concentration increased for greater organoclay concentrations. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：187 / 195

页数：9

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