不同包裹型态SiO_2-PS复合微粒子的制备研究  

The preparation of different type SiO_2-PS composite particles

作　　者：罗付生[1] 吴天斌[2] 

机构地区：[1]惠州学院化学工程系,惠州516007 [2]中国石油大学重质油加工国家重点实验室,北京102249

出　　处：《化工新型材料》2009年第7期103-104,120,共3页New Chemical Materials

基　　金：国家973课题项目(2004CB217808);惠州学院博士科研启动项目(C505.0302)

摘　　要：在种子生长法制备不同粒径的单分散二氧化硅颗粒的基础上,采用KH-570(3-甲基丙烯酰氧丙基三甲氧基硅烷)在乙醇溶液中作为氧化硅颗粒的表面处理剂进行表面接枝改性。再将改性SiO2与苯乙烯单体进行分散聚合反应,在聚合时间不改变的前提下通过改变参与反应的SiO2颗粒粒径、浓度以及SiO2的加入时间可以得到SiO2与PS复合的3种不同构型。Monodisperse silicon dioxide particles were prepared by the seed growth method, and coupling agents 3-（methacryloyloxy） propyl] trimethoxysilane （KH2570） were used for modifying these silica particles. The results showed that in the presence of ethanol and water, styrene reacted with silica modified by KH2570 in dispersion polymerization. It was discovered through transmission electron microscopy and energy spectrum that the modified silica particles ware successfully encapsulated with polystyrene. The shape of composition of the composite particles was studied by changed the three main parameters, namely, the silica beads size and concentration, the reacting time of the silica beads with Polystyrene.

关 键 词：分散聚合 二氧化硅颗粒 复合粒子 

分 类 号：TB33[一般工业技术—材料科学与工程]