Fire Science and Engineering (한국화재소방학회논문지)

Korean Institute of Fire Science and Engineering (한국화재소방학회)
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Combustion Characteristics of Pinus rigida Specimens Treated with Phosphorus-Nitrogen Additives

인-질소 첨가제로 처리된 리기다 소나무 시험편의 연소특성

  • Chung, Yeong-Jin (Dept. of Fire Protection Engineering, Kangwon National University Fire & Disaster Prevention Research Center, Kangwon National University)
  • 정영진 (강원대학교 소방방재공학과, 강원대학교 소방방재연구센터)
  • Received : 2015.07.31
  • Accepted : 2015.10.26
  • Published : 2015.12.31
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Abstract

This study was performed to test the combustive properties of Pinus rigida specimens treated with phosphorus (P) and nitrogen (N) additives. Each Pinus rigida specimen was painted three times with 15 wt% P-N additive solutions at room temperature. After drying the treated specimens, the combustion properties were examined using a cone calorimeter (ISO 5660-1). The time to ignition (TTI) for the treated specimens was 90 to 148 s except for the specimen treated with PP/$4NH_4^+$, and the time to flameout (TF) was 556 to 633 s, which was longer than that of virgin plate. While the The specimens treated with P-N additives showed 12.5 to 43.4% higher mean heat release rate ($HRR_{mean}$) and 11.8 to 43.1% higher total heat release (THR) than virgin plate. The effective heat of combustion (EHC) was by 2.9 to 17.5% lower than that of virgin plate. It can thus be concluded that the combustion-retardation properties were partially improved compared to those of virgin plate.

이 연구에서는 인(P)-질소(N)의 첨가제로 처리된 리기다 소나무의 연소성을 시험하였다. 15 wt%의 인-질소 첨가제 수용액으로 리기다 소나무에 3회 붓칠하여 실온에서 건조시킨 후, 콘칼로리미터(ISO 5660-1)를 이용하여 연소성을 시험하였다. 그 결과, 인-질소 첨가제로 처리한 시험편은 피로인산/암모니움이온 첨가제로 처리한 시험편을 제외하고, 처리하지 않은 시험편에 비하여 착화시간이 90~148 s으로 길었다. 또 불꽃소멸시간은 556~633 s으로서 길게 측정되었다. 그러나 인-질소 첨가제로 처리한 시험편은 무처리 시험편에 비해 각각 12.5~43.4% 정도 높은 평균열방출률과 11.8~43.1% 정도 높은 총열방출률을 나타내었다. 특히, 인-질소 첨가제로 처리한 시험편의 유효연소열은 15.60~18.37MJ/kg으로서 순수 리기다 소나무 시험편에 비하여 2.9~17.5% 낮게 나타났다. 따라서 인-질소 첨가제로 처리한 시험편은 순수 리기다 소나무 시험편에 비하여 연소 억제성을 부분적으로 향상시켰다.

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