TiO_2悬浮液颗粒团聚机理及团聚体分形特征研究  

Study on Aggregation Mechanism and Fractal Characteristic of Ultra-fine TiO_2

作　　者：周邵萍[1] 葛晓陵[1] 

机构地区：[1]华东理工大学机械与动力工程学院,上海200237

出　　处：《硅酸盐通报》2013年第8期1680-1683,共4页Bulletin of the Chinese Ceramic Society

摘　　要：本文实验测试不同浓度TiO2悬浮液的相关参数,包括颗粒粒径、电导率、介电常数、表面电势、颗粒的Zeta电势等,计算了不同浓度悬浮液颗粒间作用势能,分析了颗粒团聚机理及悬浮液的稳定性。用光学显微镜观察不同浓度悬浮液团聚体的形貌。在此基础上,从团聚体的自相似性、实验获得团聚体的形貌出发,分析了团聚体的分形特征,并用分形软件计算了不同浓度悬浮液团聚体的分形维数。Physical properties of ultra-fine TiO2 suspension with different concentration were measured, such as average diameter, electric conductivity, dielectric constant, surface potential, zeta potential. In addition, the inter-particles potential curves of different concentration suspensions were calculated and figured out. The aggregate characteristic and the stability of TiO2 suspension were analyzed. Based on the self-similarity of ultra-fine TiO2 agglomerates and morphology of agglomerates from experiments, the fractal characteristics and the fractal dimension of TiO2 agglomerates were analyzed and calculated with fractal software.

关 键 词：超细钛白石 团聚石 分形石 稳定性 

分 类 号：TQ028[化学工程]