熔融混煉氯丁橡膠(CR)/黏土奈米複合材料之製備及其特性之研究

Preparation and Properties of Chloroprene rubber /Clay Nanocomposites by Melt Intercalation

高鵬翔(Peng-Hsiang Kao)

指導教授 ： 程耀毅

國立臺北科技大學/工程學院/有機高分子研究所/碩士(2005年)

摘要

本研究乃以氯丁橡膠為基材添加有機改質劑與黏土，使用塑譜儀混煉製備成黏土奈米複合材料，再利用熱重量分析儀(TGA)、X光繞射儀(XRD)、動態機械分析儀(DMA)、穿透式電子顯微鏡(TEM)探討氯丁橡膠添加奈米黏土後，黏土的分散效果及對氯丁橡膠熱行為、與機械強度的影響。結果顯示，氯丁橡膠添加改質劑與黏土後，小於10%的添加比率所製備出來的黏土複合材料，皆呈現分散良好的現象。然而添加了奈米黏土後，以TGA分析其熱裂解行為，發現只加了黏土後，熱裂解溫度沒有提升的現象，但是添加了改質劑及黏土，隨著改質劑的比例提升其熱裂解溫度提升情形較為明顯。於動態機械性質分析 (DMA)，添加改質劑與黏土後其提升其玻璃轉移溫度與動態儲存模數(E’)。當氯丁橡膠添加了改質劑與黏土所量測出來的拉伸強度與伸長率比起未添加改質劑之黏土的樣品來的高，且隨著改質劑量增加而增高。

關鍵字

氯丁橡膠 ； 有機改質劑 ； 奈米複合材料 ； 玻璃轉移溫度

並列摘要

Chloroprene rubber (CR)/organic modifier/sodium montmorillonite (NA-MMT) nanocomposites were prepared by melt intercalation. The morphology and thermal properties of the nanocomposites were studied using X-ray diffraction (XRD), transmission electron microscopy (TEM), and thermogravimetric analysis (TGA) and dynamic mechanical analysis (DMA).
TEM showed that the silicate layers of clay were dispersed at the nano-scale level in the CR matrix containing less than 10 % of clay. XRD investigation also indicated that the silicate layers of clay were exfoliated, DMA was further performed to investigate the thermomechanical properties of CR–clay nanocomposites containing various amounts of clay. With the increase of organic modifier content, the glass-transition temperature and storage modulus of CR– clay nanocomposites increased .The tensile strength and elongation of the nanocomposites also increased.

並列關鍵字

Chloroprene rubber (CR) ； nanocomposites ； glass-transition temperature ； organic modifier

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