本論文為探討SiO2支撐之Metallocene觸媒催化乙烯及其共聚合反應之研究，利用含浸法製備觸媒，進行泥漿式之聚合反應。研究之初以不同鍛燒溫度製備觸媒，以求得最佳鍛燒溫度，再以不同的反應溫度，求得最佳反應溫度，接續探討不同表面積的觸媒對產量的影響，並對不同α-烯烴添加量對於LLDPE產量的影響加以探討，另外亦對觸媒及高分子作物、化性分析(包括觸媒ICP-AES、高分子之FTIR、DSC、XRD、密度等分析)。 本研究發現在載體鍛燒溫度為450℃時，有最佳的產量，根據ICP-AES測定推測為450℃擁有較高的Zr含量，為其產量最佳之原因。亦由實驗中瞭解當反應溫度為60℃時，其產量為最佳。而在300m2/g與640m2/g(奈米級)不同表面積載體的催化效果比較上，奈米級有較佳之催化效果。研究結果發現使用不同α-烯烴添加量對於LLDPE產量的亦有影響，發現其添加量與產量成正相關，其DSC的研究發現，α-烯烴添加量愈高，會使Tm隨之降低。由XRD觀測產物(HDPE)，發現XRD之強度會隨著產量的上昇而上升。由SEM觀測HDPE，發現隨著觸媒的添加量上升，其絲狀結構越明顯。 AbstractThe purpose of this thesis is to study ethylene polymerization and co-polymerization catalyzed by Cp ZrCl /SiO . The catalyst was prepared by impregnation method. The polymerization was carried out in a slurry reactor. The catalysts were prepared using supports with different calcinations temperature. We changed the reaction temperature to find the best condition for polymerization. We also studied the effect of α-olefin types. The catalysts and polymers were characterized with different techniques. We found that 450℃ was the best calcination temperature to produce the largest amount of product, which was due to its highest Zr content (obtained from ICP-AZS). We also found that was the best reaction temperature . For catalysts with surface area of 300m2/g and 640m2/g(nanometer degree), the catalyst with 600m2/g had better performances. The increase of α-olefin increased the product yield. But decreased product melting temperature. With the use of XRD, we found that the intensity increased with increasing polymer yield. SEM shorted that the silky structure of HDPE became dominate with the increase of Catalyst amount.
