Compression of dispersions to high stress under electric fields: effects of concentration and dispersing oil.

摘要: Dispersions of various concentrations (15-35%) were prepared in silicone oils vastly different viscosities (40, 1000, 10,000, and 30,000 mPa s) compressed to high values stress while under an electric field 2 kV/mm. A purpose this study was observe the effect compression E simultaneously on these dispersions assess predictions most common relevant theories. As shown, static stresses over 1000 kPa could readily be obtained although data presented here held below 300 protect load cell equipment. The results are compared discussed terms a power law fit for vs gap since theories predict such dependence. PL exponents fall around 3 ranges: (-2), (-3), much less than (-3). coefficients however reflect systematic way dispersing oils. compressive strain behavior is studied with regard particle concentration oil viscosity.