浓悬浮液中溶剂可渗透性纳米胶体颗粒扩散特性的理论研究  

The theoretical study of the diffusion property of dissolvent permeable nano-colloidal particles in concentrated suspension

作　　者：陈智全[1,2] 李富石[3] 杨伟国[2] 

机构地区：[1]湖南城市学院,湖南益阳413000 [2]中南大学物理与电子学院,湖南长沙410083 [3]中国电子科技集团公司第四十研究所,湖南长沙410111

出　　处：《湖南城市学院学报（自然科学版）》2015年第2期53-55,共3页Journal of Hunan City University:Natural Science

基　　金：湖南城市学院科技计划资助项目(2014xj22)

摘　　要：本文基于渗透性球体颗粒模型,根据浓悬浮液中溶剂可渗透性颗粒的流变特性,充分考虑颗粒间的相互作用以及流体动力学相互作用,从理论上研究了浓悬浮溶液中溶剂可渗透性颗粒的扩散特性随溶液体积浓度以及渗透率的变化关系。研究结果表明,一定粒径的渗透性颗粒在浓悬浮液中,粒子的平移扩散系数和旋转扩散系数都随着渗透率的增大而增大,随溶液体积浓度的增大而减少。Based on the model of permeable sphere particle, according to the rheological properties of dissolvent permeable particles in concentrated suspension, taking the interactions between the particles and the hydrodynamics into consideration, the changing relations between the diffusion property of the dissolvent permeable particles in concentrated suspension and the volume concentration of the solution as well as the permeability have been studied in theory. The re- suits show that in the concentrated suspension, the tranlational diffusion coefficient and rotational diffusion coefficient of a certain size permeable particles are growing with the increasing permeability and dropping with the increasing of the volume concentration of solution.

关 键 词：渗透性颗粒 体积浓度 平移扩散系数 旋转扩散系数 

分 类 号：O436[机械工程—光学工程]