摘要：借助IR光谱、SEM及粒度分析、Zeta电位等测试手段,研究了非离子型表面活性剂聚乙二醇(PEG)大分子对MgAl₂O₄前驱体表面上的吸附状态和表面性能的影响。结果表明,在沉淀过程中引入PEG1000,并用含有少量PEG1000的溶液洗涤前驱体,可以改变前驱体表面特性,增强空间位阻效应,避免干燥和焙烧过程中形成硬团聚体以及改善粉体的分散性。

关键词：MgAl₂O₄前驱体;表面活性剂;表面改性;

Abstract:The effects of non-ionic high polymer additives PEG on aborption state and surface properties of MgAl₂O₄ precursor are investigated bymeans of IR spectroscopy, DTA SEM, Zeta sizer etc.The results show thatPEG addition during precipitation process can lead to change of proper-ties on precursor surface , intensify space steric effect, avoid hard agglomeration during drying and calcinating and improvement of micropow-der dispersion

Keywords: MgAl₂O₄ precursor: surfactant; surface modification