Effects of ethyl cellulose polymers on rheological properties of (La,Sr)(Ti,Fe)O3-terpineol pastes for screen printing

Rheological analysis of ceramic pastes with ethyl cellulose for screen-printing

“…For instance, pastes containing EC have been reported to show shear thickening for nickel particles in dihydroterpineol [7] and zirconia particles in terpineol [8]. This behavior may be explained by the formation under loading shear of polymer bridges between the particles [ In previous studies, we have investigated paste rheology and the interaction between EC and the particles therein, showing the relationship between the rheological behavior and the adsorption of EC on LSTF particles in organic solvent for various paste conditions [5,6]. However, during screen-printing, the complicated dynamics of the pastes is characterized by several shear rates.…”

“…This material can be used to prepare SOFC cathodes, and we have been trying to control the density and thickness of La 0.6 Sr 0.4 Ti 0.3 Fe 0.7 O 3 À δ films using screen-printing techniques [5,6]. For industrial screen printing using ceramic pastes, a polymer-ethyl cellulose (EC) for example--is generally combined with an organic solvent [5][6][7][8][10][11][12]. EC is popular in industry as it affords good printing and leveling.…”

Effect of processing parameters on in situ screen printing-assisted synthesis and electrical properties of Ti3SiC2-based structures

“…Figure 4 shows the topography images of the green screen printed parts and the sintered P2.1 and P2.2 samples at 1400 ℃ for 5 h in argon. Table 2 shows the R a and R q values of the green and sintered samples, where the influence of the powder www.springer.com/journal/40145 [26,27]. The mass loss on the surface of the screen-printed films after sintering can be noticed as alterations in the topography images.…”

Thermoelectric gas sensors with selective combustion catalysts

“…We reported the viscoelastic properties of ceramic catalyst pastes of vehicles based on EC and terpineol. 21) In our previous report, we described how the EC plays two distinct roles: aiding the dispersion of the ceramic particles and increasing the viscosity of the paste. It is considered that the interactions between the ceramic catalyst particles and the EC is a key factor for the successful screenprinting of films without defects or pinholes.…”