采用改性13X分子筛(MS)与聚磷酸铵(APP)复合对木材进行阻燃与抑烟处理,通过锥形量热仪、热重-红外联用( TG-FT-IR)和扫描电子显微镜( SEM)等测试手段,从阻燃性能、热降解行为和烟气组分等方面分析了该分子筛在木材燃烧过程中的协同阻燃、成炭作用和烟气转化行为的影响。结果表明,APP与MS质量比为7：3时表现出最佳的协同效应,不仅可提高炭层的热稳定性,表现出优异的阻燃与抑烟特性,其热释放速率(HRR)显示降低,总热释放量(THR)下降了31.1%,总烟量(TSP)下降了75.9%；而且对阻燃过程中释放的烟气具有转化作用,其CO平均产量(m-COY)下降了69.6%,具有明显的减毒作用。%The effect of different ratio between ammonium polyphosphate ( APP) and modified 13X molecular sieves ( MS) on combustion properties, thermal stability and smoke behavior of wood were investigated by cone calorimeter, TG-FT-IR analysis, SEM and other test method in present study. The results show that the composites have good synergistic effects while the ratio of APP and 13X molecular sieves is approximately 7:3. As a result, the combination of modified 13X molecular sieves and APP led to lower heat release rate (HRR). It′s seen that a reduction of total heat release (THR) to 31. 1%, and the total smoke production (TSP) and the mean of CO yield ( m-COY) were decreased to 75. 9% and 69. 6%, respectively. Clearly, the modified 13X molecular sieves compound with APP promoted the thermal stability of the forming char. This exhibited an excellent flame retardant and smoke suppression characteristics. Besides, this compound had a catalytic oxidation for smoke and toxic gas produced by wood combust. This could reduce the concentration of CO effectively and further casualties were avoided.
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