Journal of the Korean Society of Hazard Mitigation (한국방재학회 논문집)

Korean Society of Hazard Mitigation (한국방재학회)
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A Study on Surface Absorption Dynamic Mechanism due to the Addition of a Surfactant in Cellulosic Combustibles

계면활성제 농도 변화에 따른 셀룰로오즈계 가연물에서의 표면흡수 동적 메커니즘에 관한 연구

  • Kim, Nam Kyun (Department of Safety Engineering, Incheon University) ;
  • Lim, Kyung Bum (Department of Fire Safety Management, Hyechon College) ;
  • Rie, Dong Ho (Department of Safety Engineering, Incheon University)
  • Received : 2012.11.14
  • Accepted : 2012.11.26
  • Published : 2012.12.31
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Abstract

In the case of Seo-Moon market in Deagu (2005), fire relapse after fire suppression has led the accident to a large fire due to secondary fire occurred because the fire fighting water did not penetrate until deep place. Thus, in the case of using a common fire fighting water extinguish a fire in the place where a large amount of cellulosic combustibles is loaded, there is a risk of fire relapse and that has digestive limitations for a combustion in the deep of cellulosic combustibles. However, a standard exist only on the surface tension in the current domestic wetting agent technology standards, so it is difficult to the performance evaluation of the wetting agent through the standard. Therefore, in this study, surface absorption mechanism were studied by measuring that wetting speed and wetting area according to the concentration of the surfactant for cellulosic combustibles(the paper and textile). Through this study, Depending on the degradation of the surface tension by surfactant addition, it was confirmed that the absorptiveness is improved on the surface.

2005년 대구 서문시장 화재사건의 경우, 심부까지 소화용수가 침투되지 않아 화재 진압 후 재발화로 인해 2차 화재가 발생하여 대형화재로 이어졌다. 이와 같이 일반적인 소화용수를 사용하여 다량의 다공성 물질이 적재되어 있는 공간에서 발생한 화재를 진압하는 경우, 물질의 심부에서 진행되는 연소에 대한 소화 한계성을 가지며 재발화의 위험성이 존재한다. 그러나 현재 국내의 침윤소화약제 기술기준은 표면장력에 대한 기준만 존재하여 이를 통한 약제의 성능평가는 어려운 실정이다. 따라서 본 연구에서는 종이와 섬유에 대한 계면활성제의 농도에 따른 젖음 속도 및 젖음 면적을 측정하여 다공성 물질의 표면흡수특성을 파악하였다. 이를 통하여 계면활성제 첨가에 의한 표면장력의 저하에 따라 표면에서의 흡수성이 향상됨을 확인하였다.

Keywords

Acknowledgement

Supported by : 소방방재청

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