摘要： 通过使用沉降性能检测结合 SEM、TEM分散形貌观察的方法，对目前应用最广泛的不同种类纳米 SiO₂在有机溶剂中的分散性能进行了研究，发现不同表面处理方法制备的纳米 SiO₂的分散性能受分散剂种类和添加量的影响较大，并确定了各种纳米 SiO₂的最佳分散剂配合体系和用量配比。

关键词: 纳米 SiO₂, 分散稳定性, 分散剂, 分散形貌

Abstract: Sedimentation performance measurement and dispersion morphology observation through SEM,TEM were employed to study the dispersion behavior of three different kinds of most extensively applied nano SiO₂ in organic solvent. It was found that the dispersing properties of nano-SiO₂ with different types and surface treatments were greatly influenced by the type and addition of dispersant. Finally the most optimum dispersant and addition for every kind of nano-SiO₂ dispersing system were determined.

Key words: nano-SiO₂, dispersion stability, dispersant, dispersion morphology