Accession Number : AD0839517

Title :   ELECTROFLUIDS - THEIR PREPARATION AND PROPERTIES.

Descriptive Note : Technical rept.,

Corporate Author : ARMY WEAPONS COMMAND ROCK ISLAND IL SCIENCE AND TECHNOLOGY LAB

Personal Author(s) : LeMar, Ralph L.

Report Date : AUG 1968

Pagination or Media Count : 23

Abstract : A literature survey was made to determine the feasibility of using fluids, blended to be viscosity sensitive to the presence of an electric field. There was considerable literature on the subject, which indicated that the concept appeared to be worthy of further laboratory study. Several devices were constructed to measure the effect of an electric field upon the viscosity of such fluids (electrofluids). Blending studies were performed using silica, graphite and molybdenum disulfide as the dispersed solids, which are a basic constituent of electrofluids. Results indicated that several problem areas exist in use of such fluids. These include: (1) irreversible, electrostatic precipitation of dispersed solids, (2) pronounced thixotropic behavior among the most sensitive fluids, when not in an electric field and (3) slow precipitation or settling of solids during storage especially with the thinner, less thixotropic fluids. (Author)

Descriptors :   (*HYDRAULIC FLUIDS, ELECTRIC FIELDS), VISCOSITY, SENSITIVITY, VOLTAGE, COLLOIDS, SILICON DIOXIDE, GRAPHITE, MOLYBDENUM COMPOUNDS, SULFIDES, ELECTROSTATIC PRECIPITATION, GELS, CHEMICAL PRECIPITATION, STORAGE.

Subject Categories : Lubricants and Hydraulic Fluids

Distribution Statement : APPROVED FOR PUBLIC RELEASE