【摘要】 以苯乙烯与马来酸酐无规共聚物 ( SMA)为有机组分 ,以正硅酸乙酯 ( TEOS)为无机组分 ,利用 sol- gel方法制得纳米杂化材料 ,以此为载体合成了杂化材料载体钛系催化剂 .利用 XPS、IR分析了载体与 Ti Cl4 的结合方式 ,并进行了乙烯聚合的研究 .结果表明 ,聚乙烯活性并不高( 1.72× 10 6g/h·mol)且分子量分布为 4 .0左右 ;堆密度范围是 0 .30～ 0 .39g/cm3.更多还原

【Abstract】 Organic/inorganic hybrid materials poly(styrene co maleic anhydride)/ tetra ethylsilicate as a support for titanium catalysts have been used in ethylene polymerization. The structures of the supported catalysts have been studied by IR and XPS. The morphology and structure of the organic/inorganic hybrid materials have been investigated by DSC, SEM and TEM. The results show that the organic/inorganic hybrid supported catalysts only have a moderate activity for ethylene polymerization: 1 72×10 6 g/(h·mol), giving polydispersity of polyethylene about 4 0 and bulk density of 0 3~0 39 g/cm 3.更多还原