A Comparative Analysis on the Material Properties of Paintings in Modern Buildings: Focusing on Seoul Weather Station

Abstract

In this study, scientific analysis(cross-section and component analysis) was conducted by selecting paint samples painted on the window frames and walls of the Seoul Weather Station. The color of the window frame is reddish brown and green. The reddish brown is mainly red iron oxide(Fe<sub>2</sub>O<sub>3</sub>), mixed with titanium white(TiO<sub>2</sub>), and in some layers, red lead oxide(Pb<sub>3</sub>O<sub>4</sub>) or lead(II) chromate(PbCrO<sub>4</sub>) is identified, and the green pigment is considered organic pigments. The resin used in the window frame is Alkyd Resin. The color of the wall is divided into pale blue green, white, and ivory colors, and the white color of the wall is calcium carbonate(CaCO<sub>3</sub>) and titanium white(TiO<sub>2</sub>), and the pale blue green is the phthalocyanine green. It is determined that paint containing acrylic resin was used for the inner wall. The characteristics of paint were compared and considered with the walls of the Seoul Weather Station, the columns of the Grand Greenhouse of Changgyeonggung Palace, and the outer wall of Busan Songjeong Station. White paint, a common color identified in the three buildings, is identified as two types of paint mixed with zinc White(ZnO) and calcium carbonate(CaCO<sub>3</sub>), and titanium white(TiO<sub>2</sub>) and calcium carbonate(CaCO<sub>3</sub>). It seems that the orange paint uses red lead oxide(Pb<sub>3</sub>O<sub>4</sub>) or Lead(II) chromate(PbCrO<sub>4</sub>) and the green paint uses organic pigments. Based on the above research results, paint painted on buildings is believed to have been painted several times after the building was built, and natural science research should be carried out to determine the history.