Dispersion of PZN-PZT powder in organic media with chemically bonded dispersant

摘要

The dispersion of chemically bonded dispersant named di-isopropoxy titanium dioleate in the PZN-PZT powder with organic media was investigated through FT-IR technique and sediment test. The results showed that the dispersant exhibited a good dispersion in the PZN-PZT suspensions. The interaction mechanism between the dispersant and the powder particle surface was involved in the formation of a strongly chemical bond through the reaction of alkoxy groups on the dispersant molecule with the surface hydroxyl of the PZN-PZT powder. The dispersant concentration corresponding exactly to the monomolecule layer coverage onto the PZN-PZT particle surface was determined to be 0.25 wt%. (C) 2001 Kluwer Academic Publishers. [References: 9]