PDF全文下载：2011050483
钞占府， 杜芳林*
（青岛科技大学 材料科学与工程学院， 山东 青岛 266042）
摘要: 采用表面活性剂对纳米氧化铈进行修饰，通过研磨法实现纳米氧化铈（CeO2）在不饱和聚酯树脂（UPR）预聚物中的分散，以浇注法制得纳米CeO2/UPR复合材料。采用场发射扫描电镜和X射线能谱仪技术对纳米CeO2/UPR复合材料中的纳米CeO2的分散性进行表征，并对其力学性能进行了测试。结果表明：采用KH-570修饰的纳米CeO2在基体中具有显著改善的分散效果；当KH-570用量为纳米CeO2质量的2.0%时，纳米CeO2在基体中的分散效果最好；当改性纳米CeO2的质量分数为3.0%时，纳米CeO2/UPR复合材料拉伸强度达到最大值，较纯不饱和聚酯样品的拉伸强度提高了25.4%。
关键词: 纳米氧化铈； 不饱和聚酯树脂； 纳米复合材料； 表面活性剂； 分散行为
中图分类号: TB 332文献标志码： A
Effect of Surfactant on Dispersion Behavior of
Nano-ceria/unsaturated Polyester Resin Composites
CHAO Zhan-fu, DU Fang-lin
(College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)
Abstract: The surface of ceria nanoparticles were modified by surfactants, and the dispersion behavior of ceria nanoparticles were also improved by milling with unsaturated polyester resin, the ceria/unsaturated polyester resin nanocomposites were prepared by casting method. The dispersion behavior of ceria nanoparticles in nanocomposites were characterized by field-emission scanning electron microscopy and energy dispersive X-ray spectrometer, and the mechanical properties of CeO2/UPR nanocomposites were also investigated. The results showed that the ceria nanoparticles modified by KH-570 had the better dispersion behavior in the UPR matrix and the proper dosage of KH-570 was 2.0%. Compared with that of pure unsaturated polyester resin, the tensile strength of CeO2/UPR nanocomposites reached the maximum value and improved by 25.4%, as the mass content of modified nano-ceria was 3.0%.
Key words: nano-ceria; unsaturated polyester resin; nanocomposites; surfactant; dispersion behavior
收稿日期:2011-03-22
基金项目: 国家支撑计划项目（2007BAB27B01-06).
作者简介: 钞占府（1975—）,男,硕士研究生.*通信联系人.
