梁丽萍,苏彩霞,郝建英,郑建军

• 1:太原科技大学材料科学与工程学院

摘要(Abstract)：

采用一缩二乙二醇(DEG)修饰丙醇锆(Zr(OPr)4)的水解-缩聚过程,在乙醇(EtOH)介质中制备ZrO2基溶胶;借助小角X射线散射和激光动态光散射研究胶体微观结构对合成体系组成的依赖性。结果表明,DEG分子可以通过其端羟基与Zr(OPr)4发生亲核取代而形成稳定的配合中间体,有效抑制Zr(OPr)4的水解-缩聚过程,从而在很宽的组成范围内获得稳定的ZrO2基溶胶。此外,在稳定溶胶对应的组成范围内,随DEG引入量减少或反应H2O量增加,胶体粒子数量增大并形成团簇。受胶粒表面未水解的DEG配体残留的影响,胶粒之间通过表面羟基缩合迅速长大的几率很小。

关键词(KeyWords)： ZrO2;溶胶;丙醇锆;一缩二乙二醇;小角X射线散射;激光动态光散射

Abstract:

Keywords:

基金项目(Foundation): 山西省自然科学基金(2009011003-2);; 太原科技大学博士科研基金(200786)

作者(Author): 梁丽萍,苏彩霞,郝建英,郑建军

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