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Fire Sci. Eng. > Volume 33(3); 2019 > Article
Fire Science and Engineering 2019;33(3):9-20.
DOI: https://doi.org/10.7731/KIFSE.2019.33.3.009    Published online June 30, 2019.
붕소/실리콘 졸로 도포된 목재의 열위험성 평가
진의1, 정영진2
1강원대학교 소방방재연구센터 책임연구원
2강원대학교 소방방재공학과 교수
Heat Risk Assessment of Wood Coated with Boron/Silicone Sol
Eui Jin1, Yeong-Jin Chung2
1Senior Researcher, Fire & Disaster Prevention Research Center, Kangwon National University
2Professor, Department of Fire Protection Engineering, Kangwon National University
Correspondence:  Yeong-Jin Chung, Tel: +82-33-540-3121, Fax: +82-33-540-3119, 
Email: yjchung@kangwon.ac.kr
Received: 1 June 2019   • Revised: 14 June 2019   • Accepted: 14 June 2019
요약
본 연구는 붕소/실리콘 화합물을 건축 내장재용 목재에 도포한 후 화재위험성을 열 위험성에대하여 화재성능지수와 화재성장지수를 중심으로 조사하였다. 화합물은 Boric acid와 Boronic acid 유도체를 Tetraethoxyorthosilicate와 반응시켜 합성하였다. 열방출 성질은 Cone calorimeter (ISO 5660-1)를 사용하여 측정하였으며 편백나무를 사용하였다. 화재강도는 외부 열 유속(External heat flux)을 50 kW/m2로 고정시켰다. 연소시킨 후 측정된 화재성능지수는 편백나무와 비교하여 Boric acid/silicone (BA/Si) sol이 1.6배, Isobutylboronic Acid/silicone 졸 (IBBA/Si)과 Phenyl boronic acid/silicone 졸 (PBA/Si)은 각각 1.1배 증가하였다. 화재성능지수에 의한 화재위험성은 BA/Si < IBBA/Si ≈ PBA/Si 순으로 증가하였다. 화재성장지수는 편백나무와 비교하여 BA/Si와 IBBA/Si는 각각 94%, 8% 감소하였고 PBA/Si는 17% 증가하였다. 화재성장지수에 의한 화재위험성은 BA/Si < IBBA/Si < PBA/Si 순으로 증가하였다. 화재위험성을 종합적으로 평가하면 BA/Si < IBBA/Si < PBA/Si 순으로 높았다.
Abstract
This study was examined fire risk properties of wood specimen for the constructional interiors, especially focusing on the fire performance index (FPI) and the fire growth index (FGI) as heat hazard characteristics. Flame retardants were synthesized using boric acid, boronic acid and tetraethoxyorthosilicate. Heat release characteristics were measured by using a cone calorimeter (ISO 5660-1) and cypress was used. The external heat flux as fire intensity was maintained at 50 kW/m2. The measured fire performance index (FPI) after burning was increased by 1.6 times for boric acid/silicone (BA/Si) sol, each 1.1 times for isobutylboronic acid/silicone (IBBA/Si) sol and phenylboronic acid/silicone (PBA/Si) sol compared with cypress. Fire risk by the fire performance index was increased BA/Si, IBBA/Si ≈ PBA/Si order. The fire growth index was decreased 94% for the BA/Si and 8% for the IBBA/Si sol, and was increased by 17% for the PBA/Si sol. Fire risk by the fire growth index was increased BA/Si, IBBA/Si, PBA/Si order. Overall fire risk was higher in the order of BA/Si < IBBA/Si < PBA/Si.
Key Words: Heat release rate, Total heat release, Fire performance index (FPI), Fire growth index (FGI), Boron/silicone sol


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