EN
In present study, effect of quartz particle size on microstructure and stain resistance of porcelain tiles were examined. Milling time was utilized as a main parameter to control residual quartz particle size. 12, 16 and 20 min milling time were used in a laboratory condition. As milling time increases, the particle size of residual quartz decreases. This reduction in the residual quartz particle size results in enhancement of the microstructure. When the microstructure contains irregular pores with high aspect ratio which are generally formed around the residual quartz in the body, stain resistance of the porcelain tiles decreases. Therefore, microstructural changes versus quartz particle size were investigated considering stain resistance of the polished porcelain tiles.