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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。
In this paper, a kinetic enhanced non-porous support material composed of urea formaldehyde resin and zirconium dioxide is prepared by sol-gel method. This method will be alkaline medium generated zirconium dioxide nano-materials and urea, hexamethylenetetramine mixed at the appropriate temperature, in the emulsion of urea-formaldehyde polycondensation reaction, the formation of urea-formaldehyde resin and zirconium dioxide composite micro The size of the microspheres was determined by scanning electron microscopy (SEM), and the size of the microspheres was 3 ~ 5 (m). The presence of amide groups on the surface of the microspheres was confirmed by solid 13C NMR spectroscopy. The effects of emulsifier and co-emulsifier, Effect of microsphere diameter.