Fire Risk of Wood Treated With Boron Compounds by Combustion Test

Eui, Jin; Yeong-Jin, Chung

doi:2018.32.3.19

Int J Fire Sci Eng > Volume 32(3); 2018 > Article

Fire Science and Engineering 2018;32(3):19-26.
DOI: https://doi.org/10.7731/KIFSE.2018.32.3.019 Published online June 30, 2018.

연소시험에 의한 붕소 화합물 처리 목재의 화재위험성

진의, 정영진

¹강원대학교 소방방재연구센터
²강원대학교 소방방재공학과

Fire Risk of Wood Treated With Boron Compounds by Combustion Test

Jin Eui, Chung Yeong-Jin

¹Fire & Disaster Prevention Research Center, Kangwon National University
²Department of Fire Protection Engineering, Kangwon National University

요약

붕산과 5붕산암모늄으로 처리한 편백목재 시험편의 연소특성에 관한 실험을 ISO 5660-1 표준에 따른 콘칼로리미터를 이용하여 수행하였다. 그 결과 붕소화합물로 처리한 시험편의 화재성능지수(FPI)는 공시편보다 1.2~2.1배 증가하였고, 화재성장지수(FGI)는 공시편보다 1.6~8.4% 증가하였다. 또한 총연기발생률(TSR)은 공시편보다 9.0~28.3.% 낮았다. 이것은 붕소화합물로 처리한 시험편이 난연효과로 탄화층을 생성하기 때문으로 이해된다. 공시편은 418 s에서 가장 높은 CO농도인 0.01112%를 보였으나 붕소화합물로 처리한 시험편은 공시편보다 13.2~37.5% 감소하였다. 따라서 붕소화합물로 처리한 목재는 화재위험성과 위해성이 낮아질 것으로 예상된다.

Abstract

Experiments on the combustion characteristics of untreated wood specimens and also treated ones with boric acid and ammonium pentaborate were carried out using a cone calorimeter according to ISO 5660-1 standard. As a result, comparing to untreated specimen, the fire performance index (FPI) of the specimens treated with boron compounds increased by 1.2 to 2.1 times and the fire growth index (FGI) increased by 1.6 to 8.4%. Also, total smoke release rate (TSR) was 9.0 to 28.3% lower than that of the untreated specimen. It is understood that the test specimens treated with the boron compound produces a carbonized layer with a flame retarding effect. The highest CO concentration, 0.01112%, for the untreated specimen was observed at 418 s, but the specimens treated with boron compound decreased 13.2 to 37.5% compared to untreated specimen. Therefore, wood treated with boron compounds is expected to have lower fire hazards and risks.

Key Words: Fire performance index (FPI), Fire growth index (FGI), Fire safety, Boric acid (BA), Ammonium pentaborate (APB)