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http://dx.doi.org/10.12654/JCS.2020.36.6.11

Monitoring the Change of Physical Properties of Traditional Dancheong Pigments  

Kim, Ji Sun (Restoration Technology Division, National Research Institute of Cultural Heritage)
Jeong, Hye Young (Cultural Heritage Conservation Science Center, National Research Institute of Cultural Heritage)
Byun, Doo-Jin (Reliability Assessment Center for Chemical Materials, Korea Research Institute of Chemical Technology)
Yoo, Min Jae (Reliability Assessment Center for Chemical Materials, Korea Research Institute of Chemical Technology)
Kim, Myoung Nam (Restoration Technology Division, National Research Institute of Cultural Heritage)
Lee, Sun Myung (Restoration Technology Division, National Research Institute of Cultural Heritage)
Publication Information
Journal of Conservation Science / v.36, no.6, 2020 , pp. 549-561 More about this Journal
Abstract
This study aimed to assess the performance and life of nine natural mineral dancheong pigments: Seokganju, Jinsa, Hwangto, Jahwang, Wunghwang, Seokrok, Noerok, Seokcheong, and Baekto. The design of the accelerated weathering test considered the domestic climate characteristics and the location of Dancheong. Outdoor weathering tests were conducted at the Research Institute in Daejeon and the Sungnyemun Gate in Seoul to confirm the field reproducibility of the accelerated weathering test. Monitoring of the physical changes in pigments through accelerated and outdoor weathering tests are based on ultraviolet exposure dose. Despite small cracks at the beginning of the tests, the monitoring showed that Seokganju and Baekto had no marked physical changes, but the surface cracks of Jinsa and Seorok continue to expand. Hwangto and Noerok were marked with water or were resin stained, and the particles of Jahwang, Wunghwang, and Seokcheong had lost their luster. Despite the absolute difference in color change in each test, the final chromaticity change patterns of pigments were similar in that the color difference between Baekto and Noerok was below five, and Jina was above 28. The physical and surface color pigment changes were more concentrated in outdoor weathering tests than in accelerated tests, and the Seoul site was more intense than the Daejeon site. This is because outdoor weathering tests are exposed to severe variations of temperature and moisture or deposition of dust particles and, in the case of Seoul, the site is more exposed to the external environment than the Daejeon site.
Keywords
Traditional dancheong pigment; Indoor accelerated weathering test; Outdoor weathering test; Physical properties; Change of chromaticity;
Citations & Related Records
Times Cited By KSCI : 15  (Citation Analysis)
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