Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
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Effect of Short-Term Weathering on Flame Retardant Performance of Korean Red Pine Wood Coated with Dancheong

단기간 풍화가 단청도채된 소나무재의 방염성능에 미치는 영향

  • Son, Dong Won (Korea Forestry research Institute) ;
  • Hong, Jong Ouk (Conservation Science Center, National Research Institute of Cultural Heritage) ;
  • Park, Jin Ho (Department of Heritage Conservation & Restoration, Graduate School of Convergence Cultural Heritage, Korea National University of Cultural Heritage) ;
  • Lee, Hwa Soo (Department of Conservation Science, Korea National University of Cultural Heritage) ;
  • Chung, Yong Jae (Department of Heritage Conservation & Restoration, Graduate School of Convergence Cultural Heritage, Korea National University of Cultural Heritage) ;
  • Han, Gyu-Seong (Department of Wood and Paper Science, College of Agriculture, Life, & Environmental Sciences, Chungbuk National University)
  • 손동원 (국립산림과학원) ;
  • 홍종욱 (국립문화재연구소 문화재보존과학센터) ;
  • 박진호 (한국전통문화대학교 문화유산융합대학원 수리복원학과) ;
  • 이화수 (한국전통문화대학교 기술과학대학 보존과학과) ;
  • 정용재 (한국전통문화대학교 문화유산융합대학원 수리복원학과) ;
  • 한규성 (충북대학교 목재종이과학과)
  • Received : 2016.08.23
  • Accepted : 2016.09.20
  • Published : 2016.09.25
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Abstract

The objective of this study was to investigate the effect of the short-term weathering on the flame retardant performance of wood coated with Dancheong. Flame retardants were applied on the Dancheong coated Korean red pine. Flame retardants applied panels were layed at the two conditions of outdoor exposure and artificial aging to assess the reliability of artificial aging. Flame retardants used were commercial products developed for historical wooden buildings. Scanning electron micrographs revealed the forming of carbonized membrane by melting of flame retardant on wood surface. These carbonized membranes may help delay the further combustion of wood. Flame retardant performance was assessed by measuring heat release rate (HRR) and total heat release (THR) by cone calorimetry. There was no difference in flame retardant performance between before and after 6-month outdoor exposure tests. And also no difference in flame retardant performance between before and after 2-week artificial aging which corresponds to 6-month outdoor exposure. Both tests showed the similar results of combustion characteristics.

단기간의 인공열화와 옥외폭로의 두 시험조건에 따라 나타나는 목조문화재용 방염제 성능 차이를 비교하여 인공열화시험에 대한 신뢰성을 평가하고자 하였다. 주사전자현미경 분석결과, 목재 표면에 방염제의 용융으로 인해 생성된 탄화물이 층을 형성함으로써 연소를 지연시키는 작용이 일어나는 것을 확인하였다. 2주간의 인공열화 및 6개월간의 옥외폭로 시험처리를 마친 방염처리 된 단청시편에 대해 열방출률(HRR) 및 총열방출량(THR)을 측정한 결과, 열화 전 후의 방염 성능의 변화가 거의 나타나지 않았다. 실험결과 6개월간의 옥외폭로 시편과 2주간의 인공열화(6개월의 옥외폭로에 해당한다고 추정한 조건) 시편에서 근사한 연소실험 결과 값을 얻을 수 있었다.

Keywords

References

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