頁籤選單縮合
題 名 | Flexibility Improvement of Epoxy Resin by Using γ-Butyrolactone |
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作 者 | 楊木火; | 書刊名 | 高苑學報 |
卷 期 | 7:1 1998.02[民87.02] |
頁 次 | 頁315-331 |
分類號 | 467.4 |
關鍵詞 | Flexibility improvement; Epoxy resin; γ-Butyrolactone; |
語 文 | 英文(English) |
英文摘要 | The additon reaction of γ-butyrolactone with epoxy resin was carried out in CCl�猖olution, with BF��:MEA added as a catalyst. The trioxaspiro-ortho-estering structure of prepolymer was obtained first. The ring structure was opened to form a crosslinked structure of polymer at higher temperature. The structures of prepolymer and polymer have been indentified by the infrared spectra. The thermal stability of polymer was evaluated by thermogravimetric analysis. It was found that the glassy temperature of the polymer increased, and that the thermal stability of the polymer in the early stage decreased with an increase in the amount of BF��: MEA catalyst added. Moreover, the mechanical properties of a laminate made of γ-butyrolactone-modified epoxy resin with glass fiber cloth have been measured. The results indicated that the break energy decreased and the flexibility increased with an increase in the content of the odified resin in the laminate. |
本系統中英文摘要資訊取自各篇刊載內容。