改質蒙脫土對環氧樹脂硬化之研究

The curing behaviors of the epoxy/intercalated montmorillonite systems

郭家瑋(Chia-Wei Kuo)

指導教授 ： 洪信國

元智大學/工程學院/化學工程與材料科學學系/碩士(2006年)

摘要

此研究主要探討純蒙脫土(pclay),長鏈胺基改質蒙脫土(orgclay),長鏈胺基/SF8411改質蒙脫土(org8411clay)和磷系環氧樹脂改質蒙脫土(phoclay)對環氧樹脂硬化反應之影響. X光繞射分析儀(XRD,X-ray diffraction)結果顯示改質蒙脫土層間距的大小為:org8411clay>orgclay>phoclay>純蒙脫土;熱重分析儀(TGA, Thermogravimetric Analyzer) 結果顯示,層間插入高分子的量:org84111clay>orgclay>phoclay.自熱示差掃瞄分析儀（DSC；Differential Scanning Calorimeter）的結果證實加入蒙脫土後會影響環氧樹脂本身的反應機構,造成反應延遲及放熱量(△H)產生變化.在傅氏轉換紅外線光譜分析儀 (Fourier Transform Infrared Spectroscopy ；FT-IR)證實在高溫下DICY殘餘量愈少,與環氧基反應愈完全,並可藉由IR圖譜判斷,摻入不同蒙脫土對環氧樹脂系統硬化程度的結果,可和DSC放熱量的數據做個對照,放熱量愈大,其反應程度較佳,尤其是長鏈胺基改質蒙脫土和磷系環氧樹脂改質蒙脫土在170℃和180℃更為顯著.

關鍵字

環氧樹脂 ； 硬化 ； 蒙脫土 ； 插層 ； DSC

並列摘要

The curing behaviors of the epoxy with the addition of the montmorillonite (clay) intercalated with different organic compounds are investigated by using thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), wide angle X-ray diffraction, and Fourier transform infrared spectroscopy (FTIR). It is obtained from X-ray diffraction that the intercalation distance of the clay increases in the order of pclay (pristine) < phoclay (phosphorus epoxy intercalated) < orgclay (organic amine intercalated) < org8411clay (siloxane intercalated). The results of TGA confirm the effectiveness of the intercalation from various compounds. In addition, as shown by DSC and FTIR results, the curing kinetics, reaction extents, and exotherms of the epoxy resin are significantly affected by the presence of the clay. The changes of curing behaviors depend on the type of the intercalated compound, the clay content, and the curing temperature used.

並列關鍵字

epoxy ； cure ； montmorillonite ； intercalation ； DSC

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