利用锥形量热-傅里叶变换红外光谱联用仪研究了阻燃剂(TCPP)和蒙脱土(MMT)对阻燃硬质聚氨酯泡沫材料(FRPU)和阻燃硬质聚氨酯泡沫/蒙脱土复合材料(FRPU-MMT)燃烧行为及燃烧烟气中毒害气体的影响。锥形量热测试表明TCPP的添加能明显降低 FRPU 的热释放速率和总热释放量,而MMT对FRPU-MMT的热释放速率和总热释放量的影响不明显。同时,TCPP 的添加会增大 FRPU 的生烟速率和总生烟量,而 MMT 的添加能降低 FRPU-MMT的生烟速率和总生烟量。燃烧烟气中毒害气体的研究表明,TCPP 的添加会明显增大 FRPU 的生烟量和燃烧烟气中 CO、HCl 和 HCN 的生成量,而MMT的添加能显著降低 FRPU-MMT的生烟量和燃烧烟气中CO、HCl、HCN和NOx 的生成量。
The effects of flame retardant (TCPP)and montmorillonite (MMT)on the combustion behavior and toxic gases in fire effluents of flame retarded rigid polyurethane foam (FRPU)and flame retarded rigid polyure-thane foam/montmorillonite composite (FRPU-MMT)were investigated by cone calorimeter coupled with Fou-rier transform infrared spectroscopy.The results of cone calorimeter showed that additive of TCPP decreased the heat release rate and total heat release of FRPU obviously,and MMT had a few effects on heat release rate and total heat release of FRPU-MMT.Meanwhile,additive of TCPP increased smoke production rate and total smoke production of FRPU,and additive of MMT decreased smoke production rate and total smoke production of FRPU-MMT.The analysis of toxic gases in fire effluents indicated that additive of TCPP increased CO,HCl and HCN production in fire effluents of FRPU obviously,and additive of MMT decreased CO,HCl,HCN and NOx production in fire effluents of FRPU-MMT effectively.
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