通过热释放速率(HRR)、总热释放量(THR)、有效燃烧热(EHC)、CO 产率、CO2 产率以及烟释放总量等指标,研究了杨木胶合板的阻燃性能。 实验结果表明:磷酸氢镁和二氧化锆阻燃剂单独使用时,都能够在杨木胶合板燃烧过程中降低热释放速率、总热释放量、有效燃烧热、CO2 产率以及烟释放总量,增大 CO 产生速率,但阻燃效果不理想;而磷酸氢镁与纳米二氧化锆复合阻燃剂,可以在杨木胶合板燃烧过程中产生协同效应,并且使用此复合阻燃剂的杨木胶合板在点燃 190 s 后即停止燃烧,其阻燃效果最佳。

The flame retardancy of poplar plywood was studied through the indexes of heat release rate, total heat release, effective combustion heat, CO formation rate, CO2 formation rate, and total smoke release. The results showed that the heat release rate, total heat release, effective combustion heat, CO2 formation rate, and total smoke release of poplar plywood reduces and the CO formation rate increases with nano-zirconia and magnesium hydrogen phosphate respectively, but the flame retardant effect can' t achieve the goal; the composite flame retardant of nano-zirconia and magnesium hydrogen phosphate have synergistic effect on flame retardancy of poplar plywood in the process of combustion; the poplar plywood stops burning after burning for 190 s; the retardancy effect of composite flame retardant is better than that of single flame retardant.