【摘要】 本文提出用溶胶-凝胶法,制备一种由脲醛树脂与二氧化锆构成的动力学增强非多孔载体材料。本法将在碱性介质生成的二氧化锆纳米材料与尿素、六次甲基四胺混合, 于适当温度下，在乳化液中进行脲醛的缩聚反应，生成脲醛树脂与二氧化锆复合物微球，经扫描电镜测定粒径为3~5(m，由固体13C NMR测定确证微球表面存在酰胺基团。本文探讨了乳化剂和助乳化剂的种类、配料比例、搅拌速度等因素对复合物微球球径的影响。更多还原

【Abstract】 This article proposed a preparing method of kinetically enhanced non-porous support which was constructed by Urea-formadehyde and zirconia using sol-gel technology. Zirconia nanoparticle which was precipitated in alkaline medium, was mixed with Urea and hexamethylenetetramine in w/o style emulsion and the non-porous composite microspheres of UF resin and Zircomia were obtained in the condensation reaction of Urea and formadehyde under proper temperature. The 3~5 particle size was determined by SEM and the amide group on the surface of microspheres confirmed by solid state 13C NMR. The effects of the variety and ratio of emulsifier and auxiliary emulsifier, the velocity of stirring, the concentration of the reactant, the dropping velocity of Zirconyl chloride et. al. on the diameter of composite microspheres was discussed. The rigidity and flexibility of the composite microspheres of UF resin and zirconia were improved and tolerated pressure of 45 MPa under slurry packed process of column.更多还原