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Optimization of Dispersion and Viscosity of a Ceramic Jet Printing Ink
Author(s) -
Teng Wan D.,
Edirisinghe Mohan J.,
Evans Julian R. G.
Publication year - 1997
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1997.tb02855.x
Subject(s) - dispersant , ceramic , viscometer , viscosity , suspension (topology) , materials science , thermogravimetric analysis , dispersion (optics) , composite material , capillary action , sintering , cubic zirconia , chemical engineering , chromatography , mineralogy , chemistry , physics , mathematics , homotopy , pure mathematics , optics , engineering
Different amounts (0.5–10.0 wt%) of an oligomeric dispersant were added to a ceramic ink containing 30 vol% of zirconia in butyl acetate. The sediment packing densities of the resulting suspensions were measured. The viscosities of the suspensions were determined using a syringe that was adapted as a capillary viscometer suitable for the measurement of the low viscosities encountered (up to 400 mPas). The highest sediment‐packing density coincided with the lowest viscosity and occurred when 1–2 wt% of dispersant, based on the ceramic, was added. Investigation of the supernatant of the suspensions by thermogravimetric analysis indicated that this amount corresponded to the highest level of adsorption of the dispersant on the ceramic. The sediment from this suspension yielded a high density on subsequent sintering.