PET聚酯缩聚用改性二氧化钛催化剂的制备研究  

Study of Synthesis and Application of Surface Modified Titanium Dioxide for Polycondensation Catalysis of PET

作　　者：顾宇辉[1] 古宏晨[2] 徐宏[2] 韩哲文[1] 

机构地区：[1]华东理工大学材料科学与工程学院,上海200237 [2]上海交通大学纳米科学与技术工程中心,上海200030

出　　处：《合成纤维》2004年第4期25-27,共3页Synthetic Fiber in China

基　　金：科技部"十五"攻关项目(2001BA310A09);上海市纳米专项(0159NM037;0213NM002)。

摘　　要：设计并制备了一种表面硅烷偶联剂KH560改性的二氧化钛,并用红外、透射电镜、XRD粉末衍射和N2吸附比表面积对其进行表征。该催化剂是由许多很小的无定形二氧化钛粒子组成的团聚体,其表面富含大量的羟基。该催化剂较Sb2O23的催化活性高许多,而且所得产品的色相较未改性的二氧化钛有明显的改善。A new type of silane reagent KH560 modified titanium dioxide was prepared by hydrogen of titanium alcohoxide, and characterized by IR spectroscopy, transmition electron microscopy( TEM, HREM ), powder X-ray diffraction and N2 adsorpation. The titanium dioxide was used as polycondensation catalyst of poly- ethyleneterephthalate (PET) and shovved more activity than antimony-based catalysts(Sb2O3). Furthermore, the PET with silane coupling reagent KH560 modified titanium dioxide showed higher whiteness than that titanium dioxide without modification.

关 键 词：硅烷偶联剂 改性二氧化钛 催化剂 制备 聚酯 缩聚 聚对苯二甲酸乙二醇酯 对苯二甲酸 乙二醇 氧化锑 醋酸锑 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业]