Preparation and characterization of waterborne ceramic ink with submicron-sized praseodymium-doped zirconium silicate pigment by water-based diblock polymer dispersants |
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| Affiliation: | 1. School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen, 333403, PR China;2. School of College of Technology and Art, Jingdezhen Ceramic Institute, Jingdezhen, 333403, PR China;3. Institute for Advanced Ceramics, Harbin Institute of Technology, Harbin, 150001, PR China;4. School of Materials Science and Engineering, Central South University, Changsha, 410083, PR China;1. R&D Department, Degla Chemicals, Cairo, Egypt;2. Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt;1. PPG, Dyrup A/S, Gladsaxevej 300, DK-2860, Søborg, Denmark;2. PPG, Marly Technical Center, 3 ZAE les dix Muids BP 89, 59583, Marly Cedex, France;3. PPG, Coatings Innovation Center, Allison Park, PA, 15090, USA;4. Niels Bohr Institute, Universitetsparken 5, DK-2100, Copenhagen, Denmark;1. Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Hiroshima, 739-0046, Japan;2. Sanyo Color Works, Ltd., Hyogo, 670-0966, Japan |
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| Abstract: | Two diblock polymer dispersants (i.e., PMAA-b-AMPS and PSSS-b-GMA) were synthesized and used as water-based dispersants for dispersion and stabilization of waterborne ceramic ink with submicron-sized praseodymium-doped zirconium silicate (Pr-ZrSiO4) pigment. The color property, dispersion, and stability of the pigment particles in aqueous suspension were determined by colorimetry, laser particle size analysis, and sedimentation test. The adsorption mechanism of carbon chains of dispersants on the particle surface was analyzed by Fourier transform infrared spectroscopy, thermogravimetric analysis, X-ray photoelectron spectroscopy and electrokinetic potential measurement. Also, the viscosity, surface tension and stability of waterborne ceramic ink with the pigment particles were measured by rheometry, surface tension analysis and standing settlement. The results show that the submicron-sized pigment particles in waterborne ceramic ink show optimum dispersibility and stability at 5 wt% addition of diblock polymer dispersants PMAA-b-AMPS and PSSS-b-GMA mixed in a mass ratio of 9:1. This could be since the mixed dispersants provide the more interparticle electrostatic repulsion and steric hindrance energies due to the proper adsorption on the particle surfaces. It is indicated that adding 20 wt% of diethylene glycol monobutyl ether into the waterborne ceramic ink can effectively enhance the viscosity and reduce the surface tension, thus satisfying the applied requirements in inkjet printing. In addition, the jettability of waterborne ceramic ink on a simulated ceramic green body was also evaluated based on semi-empirical analysis. |
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| Keywords: | Diblock polymer dispersant Waterborne ceramic ink Dispersion Stability Inkjetability |
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