作　　者： ; ; ; ; ;

机构地区： 河北大学化学与环境科学学院

出　　处： 《化学工程师》 2010年第10期10-13,共4页

摘　　要： 通过二次浸渍工艺获得了硅酸盐阻燃木材样品,通过极限氧指数(LOI)测试了样品的阻燃性能,通过热分析结合扫描电子显微镜(SEM)研究了样品的热降解过程。结果表明:通过二次浸渍工艺可获得阻燃性能优良的阻燃木材,过渡金属硅酸盐可有效的催化木材第二阶段的降解反应,促进炭的生成,还可以在高温下形成熔体覆盖在剩炭的表面,有效提高剩炭的稳定性,同时隔绝可燃性气体的逸出,避免热量和O2的进入,使木材具有良好的阻燃性能。 A flame retardant wood was prepared using a series of insoluble silicates through the double bath technique.The flame retardancy of the wood samples was studied with the LOI method.The thermal degradation of the samples was studied through the thermal analysis method and the morphology of the char residue was investigated by the scanning electron microscopy（SEM）.The results showed that the flame retardancy of wood can be improved obviously by the double bath technique.The insoluble silicates can obviously catalysis the degradation reaction of wood in the second stage,and causing the enhancement on the yield and stability of the char residual that generated at the second stage.What＇s more,the insoluble silicates can melt at the higher temperature and cover at the surface of the char residue to inhibit the release of the flammable gases and the transmition of the energy and O2.So the wood samples have the better flame retardancy.

关 键 词： 木材 阻燃 硅酸盐 热分析 降解

领　　域： [化学工程]