建築物開口部裝置防火塗料鐵網降低火災輻射延燒之研究

A Research on Installing Wire Netting Coated with Intumescent Fire Retardant at the Outward Openings of Walls in a Building to Reduce Fire Spreading by Radiation Heat

洪盟峰(Meng-Feng Hung) ； 陳宏原(Hong-Yuan Chen) ； 莊英吉(Ying-Hung Chuang) ； 林慶元(Ching-Yuan Lin)

《中國土木水利工程學刊》 22卷3期 (2010/09) Pp. 299-308

https://doi.org/10.6652/JoCICHE.201009_22(3).0006

摘要

本研究屬於一種新型之降低外牆開口輻射熱的裝置，以膨脹型防火塗料噴佈於鐵絲網，固定在建築物外牆開口上，以降低熱輻射延燒。研究以1.2 m ×1.2 m × 1.2 m燃油高溫爐進行耐火試驗，研究變數包括不同鐵網網目（網孔寬）及不同塗料厚度等。經由6組的耐火試驗結果顯示，在相同網徑及塗料厚度下，鐵網網目號數愈大（網孔寬愈小），產生的輻射熱愈小；在相同網徑及網目號數下，塗料厚度愈大，產生的輻射熱愈小。在火源溫度945°C，距離火源50 cm的情況，由理論計算輻射熱為6.91 W/cm^2，本研究防火塗料鐵網最低可降至0.48 W/cm^2，有效阻絕棟間輻射延燒。

關鍵字

膨脹防火塗料 ； 輻射熱 ； 延燒

並列摘要

In this research, a novel device set up at the opening of outward wall for reducing radiation heat was tested and analyzed. Such device was made of wire netting smeared with intumescent fire retardant coating and installed at the outward openings of buildings, which may reduce fire spreading caused by radiation heat. This research utilized a 1.2 m × 1.2 m × 1.2 m furnace as instrument of fire test. Variables of this research include mesh number of wire netting (diameters of meshes) and differential thickness of layers. The outcomes of six fire tests showed that when wire nettings with same mesh diameter and coating thickness were used, the more netting meshes (the smaller mesh diameters) the less radiation heat was generated; likewise, when wire nettings with same mesh diameter and number were used, the thicker coating the less radiation heat was generated. With 945°C in temperature and 50 cm in distance from the fire, the radiation heat calculated based on theory was up to 6.91 W/cm^2, while in the setting with our fire retardant material coated wire netting, the radiation heat dramatically dropped to 0.48 W/cm^2, indicating that installation of this device effectively blocks fire spreading between buildings.

並列關鍵字

intumescent fire retardant coating ； radiation heat ； fire spreading