作　　者： ; ; ;

机构地区： 河海大学机电工程学院

出　　处： 《河海大学学报（自然科学版）》 2003年第1期111-114,共4页

摘　　要： 采用修正的Schurr模型描述胶体溶液中的离子输运过程,计算分析了胶体溶液介电常数和电导率的低频和高频特性.研究结果表明,胶体溶液的介电常数在低频率下的超高增益现象,只有在颗粒相(含表面层)电导率远小于基质溶液(电解质溶液)电导率的情况下才会出现;理论计算结果与实验资料吻合较好. A revised Schurr model was used to describe the ionic transport process in colloidal solutions, and the low and high frequency properties of the dielectric constant and conductivity of colloidal solutions were calculated and analyzed. The results show that the ultrahigh increment of the dielectric constant of colloidal solutions at low frequency occurs only under the condition that the conductivity of grains (including surface layer) is far smaller than that of matrix solutions (dielectric solutions), and that the calculated results are in good agreement with the test data.

关 键 词： 胶体溶液 介电常数 电导率

领　　域： [理学] [理学]