ZHOU Xiya, YAO Lili, LIU Weidong, HU Jun

(School of Material Science and Engineering, South China University of Technology, Guangzhou 510640)

Abstract:Kaolin is very abundant in China and is widely used, but its green strength and dispersion are not good enough for the production of ceramics. In this study, kaolin was modified for ceramic use by four water-soluble polymer modifiers and then its dry green strength and viscosity were tested. FT-IR and SEM were applied to investigate the modification effect. Results showed that the modified kaolin has increased green strength and kaolin modified by modifiers B, C and D has better dispersion.

Keywords:kaolin, surface modification, water-soluble polymer