Evaluation of self-cleaning property by measuring brightness of TiO 2 coating ceramic tile under outdoor exposure test

초록

TiO₂ coating ceramic tile for self-cleaning purpose was prepared by the precipitant dropping method using TiCl₄ as a precursor. TiO₂ film was formed on the ceramic tile by spray-coating technique and heat-treated at 500°C for 1 h. The size and crystalline structure of TiO₂ particles were 15.3 nm and anatase phase. The outdoor exposure tests were conducted and the effects of outdoor exposure test conditions, such as exhaust concentration of contamination materials (test places), the UV light intensity (irradiation direction) and coating amounts of TiO₂ on the self-cleaning properties were investigated by the brightness measurements. As a results, self-cleaning property of TiO₂ coating tile was affected by the coating amount of TiO₂, however, not affected by the UV light intensity included in sun's ray (irradiation direction). TiO₂ coating ceramic tile can be utilized for exterior finishing materials because of self-cleaning property of TiO₂ coating tile.

키워드