| Summary: | 碩士 === 逢甲大學 === 紡織工程所 === 91 === Abstract
In this study, commercial organophilic montmorillonite was added into the diglycidyl ether of bisphenol A epoxy resin (DGEBA). The organo-montmorillonite /epoxy were blended with different portion of clay by mechanical force method. Furthermore, the carbon fiber was impregnated into the organo-montmorillonite/epoxy matrix to form the composites. The exfoliation of montmorillonite in epoxy was observed by XRD and TEM analysis. Otherwise, the mechanical and thermal properties on organo-montmorillonite /epoxy series and fiber/ montmorillonite/epoxy nanocomposite series were also investigated.
The experimental results showed that the montmorillonite not only to dispersed well in DGEBA but also increased the mechanical properties on organo-montmorillonite/epoxy series and fiber/montmorillonite/epoxy nanocomposite with 1-4 wt% montmorillonite. It was found that the increase in both impact and flexural strength of organo-montmorillonite /epoxy series with increasing clay concentration. In addition, the flexural property and the fracture toughness have shown improvement on fiber/ montmorillonite/ epoxy nanocomposite system through the incorporation of layered silicates.
From the TGA analysis, the addition of organo- clay into epoxy would not affect in the initial degradation temperature. However, increasing clay concentration can improve the glass transition temperature on the organo-clay /epoxy system.
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