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http://dx.doi.org/10.5658/WOOD.2018.46.5.610

A Study on the Optical Characteristics According to the Lacquer Drying Conditions for the Conservation of Lacquerwares  

Hwang, In Sun (Department of Heritage Conservation And Restoration, Graduate School of Cultural Heritage, Korea National University of Cultural Heritage)
Park, Jung Hae (Department of Heritage Conservation And Restoration, Graduate School of Cultural Heritage, Korea National University of Cultural Heritage)
Kim, Soo-Chul (Department of Conservation Science, University of Science and Technology, Korea National University of Cultural Heritage)
Publication Information
Journal of the Korean Wood Science and Technology / v.46, no.5, 2018 , pp. 610-621 More about this Journal
Abstract
In conservation treatment lacquer has been used variously as a restoration material. However, dealing with Lacquer is very difficult as it dried in high humidity that can be harmful to the base materials. Also being natural varnish, dried lacquer layer is very different from the drying condition and the quality of the lacquer. These make difficult to predict the result of drying lacquer. In this study, using the humidity control machine, firstly, the main contents of the two different type of lacquer was experimented. And these lacquers was cured in various conditions. The duration time was checked until totally hardened. After that, obtained lacquer layers was analyzed to understand optical properties. Therefore, this study made a result about the relationship between characteristics of lacquer layer and the hardening condition. As a result, duration time of the Korean lacquer drying which has average 13.4% more urushiol than the Chinese lacquer is recorded a twice or triple decrease over it of the Chinese one. And, in all types of lacquer, the higher humidity makes the faster a pace of lacquer dried. In same lacquer, the shorter the duration time of drying lacquer is much darker and glossier. However, gloss deteriorated in saturated humidity. In humidity lower than RH 70%, lacquer is not hardened in 336 hours. When the layer totally cured through long period more than 30 days, the drying lacquer is appeared high brightness and almost transparent. Thus, in lower than RH 70%, it is hard to obtain durable layer.
Keywords
lacquer; restoration material; lacquerware; paint layer; conservation treatment;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 Anzai, K., Lu, R., Phuc, B.T., Miyakoshi, T. 2014. Development and Characterization of Laccol Lacquer Blended with Urushiol Lacquer, International Journal of Polymer Analysis and Characterization 19(2): 130-140.   DOI
2 Cho, S.M., 2000. Study of Characteristic Properties on Lacquer and its Film Processing, Master, Thesis, Yonsei University, Korea.
3 Choi, J.W., Kim, S.C. 2018. Analysis of Lacquer and CNSL Using Infrared Spectrometer and Pyrolysis- GC/MS, Journal of the Korean Wood Science and Technology 46(1): 1-9.   DOI
4 Jang, E.J. 2016. Study on Physical Properities of Mixed Filler for Conservation of Lacquer Wares, Master, Thesis, Korea National University of Cultural Heritage, Korea.
5 Kenjo, T. 1986. Effective Pretreatments for the Identification of Ancient Urushi Films, Science for conservation (25): 49-54.
6 Kim, H.J., Lee, B.H. 2002. Development Trends of Natural Coatings - Rhus lacquer, Dendropanax lacquer and Cashew Nutshell Liquid(CNSL) lacquer, Journal of the Korean Industrial and Engineering Chemistry 5(5): 35-43.
7 Kim, S.C. 2007. Analysis and Conservation of Lacquer Wares from Archaeological Sites in Korea, Ph.D, Thesis, Chungbuk National University, Korea.
8 Kim, Y.J., Park, W.K. 2005. Tree-Ring Dating of Korean Furniture and Woodcraft Works of the Late Joseon Period and the Modem Era: A Case Study, Korean Journal of Art History (246): 247-274.
9 Son, D.H. 2006. Traditional Craft of Lacquer, Korea Cultural Heritage Foundation, Seoul, Korea.
10 Song, H.G., Han, C.H. 2001. Study on Refining Technique of Raw Lacquer(1)-Properties of Raw Lacquer,Refined Lacquer and Film according as Their Collecting Places and Seasons-, Journal of the Korean Wood Science and Technology 29(1): 31-42.
11 Toshiko, K., Kenjo, T. 1970. Relationship between hardening of Japanese lacquer urushi and humidity, Science for conservation (6): 43-44.