Flame Retardant and Weather Proof Characteristic of Dan-Chung Treated Wooden by Flame Retardant Performance

Abstract

One of recent methods to protect wooden cultural assets from fire, there is the flame retardation which is applied directly to wood and it is to prevent fire through securing flame resistance for the material and delaying combustion when failed fire in advance and then to gain time for people in the room to evacuate and it has same goal with the Korean Fire Service Act by protecting life and property. However, in case of spraying flame retardant on the colored surface of the wooden cultural assets, there are continuous problems of decoloration, efflorescence and water absorbtion after sometime and accordingly there increases danger of damages of cultural assets. So when treating with flame retardant on wooden cultural assets, there has to be no problems on dancheong after sometime and securing sustainable methods for flmae retardation should be preceded. Accordingly, this study aims to provide basic sources for selecting proper flame retardation methods by evaluating and analyzing flame retardation capabilities according to types of flame retardants which are frequently used nowadays and spraying them on the dancheong-painted surface and confirming if there is no problem on the dancheong and wood after sometime and if flame retardation effect is sustainable with its quality and capability through precise analysis.

Evaluation Methods of Flame Retardants for Wooden Cultural Properties

“…The components of the flame retardants has caused the difference in texture and color change of the flame retardants treated wood surface. Park et al (2013) confirmed the peeling of danchung and whitening of the test specimens treated with flame retardant after six-month exposure test. They suggested that these phenomenon had been occurred when the flame retardants were not penetrated into the wood.…”

The Cause of Whitening by Flame Retardants Treatment on Korean Wooden Cultural Heritage

“…Among the damage, the damage caused by fire is about seventy times over the last 12 years in Korea. The fire makes the serious damage to the wooden cultural heritage compared to other disaster factors (Phillip et al, 2005;Kim et al, 2012;Park et al, 2013).…”

“…First method is applying a flame retardant on the surface of wooden cultural heritages. Secondary, it is to install fire prevention equipment inside of cultural heritages (Cha et al, 2011;Park et al, 2013). But because of the institutional and budget problem, the coating method using flame retardants is usually applied (California Building Standards Commission, 2010).…”

“…The flame retardants for wooden cultural heritages in Korea have several problems such as whiteness of building surface and absorption moisture. Because of these problems, it was interrupted to process the flame retardant on the traditional paint "Dancheong" treated on wooden cultural heritages buildings (Park et al, 2013;Lee et al, 2015).…”