摘要
利用锥形量热仪CONE调查了磷氮硼系阻燃剂FRW处理胶合板在不同热辐射通量条件下的动态燃烧行为.结果显示:随热辐射通量提高,未阻燃胶合板的热释放速率峰值、烟气释放量和火势增长指数上升明显,火灾危险性高;阻燃胶合板的成炭率较高、热释放和烟释放较低;在燃烧过程中CO产率受热辐射通量增大的影响较小;FRW能显著抑制胶合板的可燃性,从而降低胶合板在使用过程中的火灾安全风险.
Fire safety of interior wooden structures is closely associated with the flammability of indoor wooden structures. The effect of the treatment with phosphoric-nitrogen-boric（P-N-B） components based fire retardant FRW on the dynamic combustion behaviors of the plywood was investigated using a CONE calorimeter at a heat fluxes of 25, 50 and 75 kW/m^2 respectively. The results show that the peak value of heat release rate（pkHRR）, quantity of smoke release, and fire growth index（FGI） of untreated plywood are quite high, suggesting a high fire risk. The treatment of plywood with a P-N-B components based fire retardant FRW results in a greater char yield and less release of heat and smoke compared to those of un-treated controls; Increasing fire intensity during test only slightly influenced the yield of carbon monoxide. Consequently, it demonstrates that the treatment with P-N-B components based fire retardant FRW can significantly restrain the combustion and reduce the yield of heat and smoke.
出处
《建筑材料学报》
EI
CAS
CSCD
北大核心
2012年第3期366-371,381,共7页
Journal of Building Materials
基金
中央高校基本科研业务费专项资金资助项目(DL12BB13)
国家自然科学基金资助项目(30972313)
