Abstract: Some shortcomings, such as high viscosity, low conductivity and low solid content etc were found for the
AEO₉/alcohol/alkane/water system reverse microemulsion ceramic inks prepared in the previous paper. Therefore, a small amount of alcohol and
Na₂CO₃ were added to adjust and improve the physicochemical properties to meet the demands of continuous ink-jet printers. It was found that the
addition of 1%～2% alcohol resulted in a reduction in viscosity to 11mPa·s. The composition of ceramic inks with the bicontinuous structure
was designated according to the phase diagram. The change of water dissolving amounts was investigated with the objective of enhancing them. The solid load
of 2.54% in the ink was realized experimentally. Unfortunately, the physicochemical properties were still not satisfactory. A small amount of
Na₂CO₃ was added to improve them. It was revealed from the experiment that the viscosity was below 18mPa·s and the conductivity was 100mS/m
after Na₂CO₃ modification. The stability of the modified ceramic inks was excellent and the particle size in the ink was lower than 10nm. The
transparency of the ink was lowered a little compared with that of ordinary reverse microemulsion ceramic ink. The TEM observation demonstrated this ink
had an obvious feature of bicontinuous structure.

Key words: ceramic ink, microemulsion, bicontinuous structure, physicochemical property