乳液法结合相分离制备氧化锆多孔微球  

Preparation of Zirconia Porous Microspheres via an Emulsion Method Combined with Phase Separation

作　　者：郭兴忠[1] 郝贵松 谢园[1] 毛文奇[1] 杨辉[1] 

机构地区：[1]浙江大学,浙江杭州310027

出　　处：《稀有金属材料与工程》2016年第S1期489-492,共4页Rare Metal Materials and Engineering

基　　金：浙江省重大科技专项重点工业项目(2014C01017)

摘　　要：以聚乙烯吡咯烷酮(PVP)为相分离剂,采用乳液法伴随相分离制备了内部具有封闭孔结构的氧化锆微球。通过扫描电子显微镜(SEM)、X射线衍射(XRD)、热重-差热分析(TG/DTA)、红外光谱(IR)等测试手段,研究了PVP的用量对多孔微球的形貌以及内部孔结构的影响。结果表明:制得的氧化锆微球具有良好的成球性能,粒度分布较宽;加入PVP基本不影响微球的表面形貌,但会控制微球的内部孔结构,随着PVP用量的增加,氧化锆微球内部的孔尺寸逐渐变大。With polyvinylpyrrolidone(PVP) as the phase separating agent, zirconia microspheres with closed pore structure were prepared via an emulsion method combined with phase separation. The effects of PVP content on the morphology and pore structure of zirconia microspheres were analyzed by scanning electron microscope, X-ray diffraction, thermogravimetric-differential thermal analysis and infrared spectrum. The results show that zirconia porous microspheres can be obtained by the method, and the obtained microspheres have a wide particle size distribution. The amount of PVP does not affect the surface morphology of the microspheres, while the pore size inside zirconia microspheres increases gradually with the increase of the amount of PVP.

关 键 词：氧化锆 多孔 相分离 微球 

分 类 号：TQ134.12[化学工程—无机化工]