层状磷酸锆/聚磷酸铵复合阻燃剂对木材的阻燃抑烟性能研究

摘要

To obtain good synergistic effects on the flame retardancy and smoke suppression of wood, compound flame retardant is usually used. The effects of a-ZrP/APP/wood composites on the combustion and smoke were studied by CONE calorimeter and thermogravimetric analysis (TGA). The results show that the heat release rate (RHRR), the total heat release (Qthr)> the smoke production rate (RSpE) and the total smoke production (2tsp) decreased remarkably while enhanced the yield and stability of the char residual, suggesting that the a-ZrP-APP composites had excellent inflame-retarding and smoke inhibition effects on poplar powder. Meanwhile, the a-ZrP-APP composites had outstanding smoke suppression properties, which might be attributed to that the a-ZrP had highly adsorptive capacity and catalytic conversion effects on the release of smoke and gas.%阻燃剂的复合协同作用能够有效地提高木材阻燃和抑烟性能.采用锥形量热和热分析技术研究了层状磷酸锆/聚磷酸铵(α-ZrP/APP)复合阻燃剂对杨木粉的阻燃与抑烟作用.结果表明:α-ZrP与APP复配使用,能有效降低杨木粉的热释放速率(RHRR)、总热释放量(QTHR)、烟生成速率(RSPR)和总烟释放量(QTSP),促进炭的生成和有效提高炭的稳定性,表现出显著的阻燃效应和抑烟特性.分散在木材表面的层状α-ZrP对烟气的高效吸附和催化转化作用,可能是α-ZrP-APP复合阻燃剂高效阻燃抑烟的根本原因.