INFLUENCE OF AN ELECTRIC-FIELD ON THE DYNAMIC VISCOSITY OF LIQUID DIELECTRICS

Experimental dependences of the dynamic viscosity of dielectric liquid s on the applied voltage are considered. The experiment is remarkable because of the elimination of the electric current through the liquid in a series of measurements by insulating one of the electrodes from t he liquid. The change in the viscosity of the liquid media can be a co nsequence of alteration of the structure of the liquid and the formati on of ion-molecule groups differing from the previously existing ones. The variation of the mechanical properties of the medium with variati on of the applied field strength points out the influence of charge fo rmation on them. The dependences for polar and nonpolar liquids are co nsidered. (C) 1998 American Institute of Physics. [S1063-7842(98)00701 -6].