Optimizing the Curing Process of Epoxy-Clay Nanocomposites

被引：8
作者：
Al-Qadhi, M. [1 ]
Merah, N. [1 ]
Mezghani, K. [1 ]
机构：
[1] Dept Mech Engn, Dhahran 31261, Saudi Arabia
来源：
COMPOSITE SCIENCE AND TECHNOLOGY, PTS 1 AND 2 | 2011年 / 471-472卷
关键词：
DSC; Glass transition temperature; Curing Temperature; Curing time; Nanocomposite; MECHANICAL-PROPERTIES; BEHAVIOR;
D O I：
10.4028/www.scientific.net/KEM.471-472.415
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
Epoxy resin is one of the most applied thermoset polymers as a matrix for Glass Fiber Reinforced Pipes (GFRP). Curing process of epoxy resin is important for the integrity of the GFRP. The present work has been conducted to determine the proper pre-curing and post-curing temperatures and duration to develop epoxy-clay nanocomposite. During this study a differential scanning calorimeter (DSC) was used to determine the glass transition temperature and hence the degree of curing. Several samples of epoxy were prepared at different pre-curing and post-curing temperatures and durations. Pre-curing temperatures ranging from 80 to 150 degrees C and post-curing temperatures ranging from 150 to 200 degrees C were studied. The results show that the optimum pre-curing and post-curing temperatures are 100 and 170 degrees C, respectively. Regarding the effect of curing duration, several specimens were prepared at the same pre-curing and post-curing temperatures with different curing durations of 1, 2, and 3 hours. It was observed that beyond one hour curing, the changes in the T-g and the degree of crosslinking were negligible. Using these optimum conditions samples of epoxy-clay nanocomposites were prepared using ultrasonication. The results showed that the addition of nonoclay to epoxy resulted in a reduction of the T-g.
引用
收藏
页码：415 / 419
页数：5
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