CHEN Yunxia, XIAOPeng

（Jingdezhen Ceramic Insititute, Jingdezhen 333001）

Abstract:Feldspar, quartz, monoammonium phosphate, boric acid, lithium carbonate, spodumene, etc. were used as raw materials to prepare opacified glass for tablewares by traditional melting process. The effects of compositions, crystallization temperature and time on the glass -forming, high -temperature fluidity and opacification were studied. Single -factor and orthogonal test methods were used to design and optimize the experiments for gaining an optimized formula and process.XRD and SEM were employed to characterize the crystalline phase compositions and the microstructures of the samples.The theoretical thermal expansion coefficient, bending strength and thermal stability were calculated and tested, respectively.The results show that: samples prepared with the optimal formula have semitranslucency, rather good bending strength of 55Mpa, and excellent thermal shock resistance, which is in line with the national requirements for daily utensis.

Keywords:opacified glass, crystallization, phase splitting, properties