Rheological Behavior of Suspension and Properties of Green Sheet

Rheologicalbehavior of alumina suspensions and properties of green sheets were investigated to find op timal conditions for preparation of aqueous green sheets.Acrylic binder and dispersants were used in this study.In an aqueous alumina /dispersant system, as the acid value of dispersant increased, the relative viscosity and sedimentation volume of the suspension decreased.This indicated that the suspension was well dispersed.In contrast, in an aqueous alumina/disper sant/binder system, the suspension showed high shear-thinning flow behavior.As the acid value of dis persant increased, the packing density, strength and extension of the green sheet decreased.The results in dicated that the rheological behavior of suspension was affected by the compatibility between dispersant and binder.