固体颗粒对溶胶系统电导率的影响  

The Influences of Particles' sizes on the Conductivities of Sol Systems

作　　者：杨丽珍[1] 郝燕萍[1] 杨莉[1] 

机构地区：[1]北京印刷学院,北京102600

出　　处：《北京印刷学院学报》2008年第2期68-71,共4页Journal of Beijing Institute of Graphic Communication

基　　金：北京市属市管高等学校人才强教计划资助项目(PHR(IHLB))

摘　　要：固体颗粒分散在液体体系中形成溶胶系统,溶胶系统的电导率随固体颗粒的浓度、大小变化而有所改变。实验选取的固体颗粒为聚四氟乙烯颗粒和硫酸钙固体颗粒,溶剂为乙醇和水。结果发现,溶胶体系的电导率与固体粉末的质量百分比浓度C有关;与固体颗粒的大小有关。如果通过实验找到电导率与颗粒大小的函数关系,那么测量溶胶体系的电导率即可以得到粉末颗粒的大小,为粉末颗粒大小的测量找到一种新的方法。The conductivity property of suspensions has been studied in the present work. The particles chosen are polytetrafluorethylen and Calcium sulfate. The solvents are ethanol and water. The results show that the conductivity of the suspensions changed as functions of the concentrations C and, it also shows that the conductivity also depend on the sizes of the particles. So the particle size measuring can be realized by measuring the conductivity of the sol systems in case the relation between particles sizes and conductivities has been already known.

关 键 词：固体颗粒 溶胶悬浮液 电导率 

分 类 号：O172.1[理学—数学]