HUANG Pengfei ¹, WANG Shuanjin ¹, XU Yangbin ², XIAO Min ¹, MENG Yuezhong ¹

(1. School of Materials and Engineering, Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, SunYat-Sen University, Guangzhou 510220, Guangdong, China; 2. Sanshuitianyu Ceramic Pigment Co. Ltd., Foshan 528100, Guangdong, China)

Abstract: Soluble ceramic inks are uniform and stable liquid phase systems, without the presence of particles. Therefore, there is no problem of settling and blocking or even wearing the printer nozzles. They are mainly used for polishing bricks. The keys to the preparation of soluble inks include the synthesis of soluble metal salts and the regulation of physical properties of inks. Titanium 2-ethylhexanoate was synthesized by using transesterification method. The effect of reaction conditions on reactive synthesis of titanium 2-ethylhexanoate was studied. The optimal reaction conditions have been identified. The molar ratio of titanium tetraisopropanoiate to 2-ethylhexanoate was 1.0 : 2.5, while the reaction processes include three step vacuum distillations with first reaction at 90 °C for 2 h, second at 100 °C for 4 h and third at 110 °C for 4 h. The as-synthesized titanium 2-ethylhexanoate contained 9.80% titanium. When the massratio of Titanium 2-ethylhexanoate to chromium 2-ethylhexanoate was 10:1 and the concentrationof solvent was 60%, the ink viscosity was 11.70 mPa·s, the density was 0.92 g/mL and the surface tension was 24.55 mN/m. The color L*a*b* value of the ink after sintering is 76.41, 5.35, 19.74.
Key words: soluble ceramic inks; Titanium 2-ethylhexanoate; coloration performance