Flammability, as an undesirable inherent nature of wood, limits its usage in many fields of structural applications. Hybrid organic-inorganic modification offers a way to improve the flame retardancy of wood. In this study, montmorillonite (MMT)-catalyzed furfurylated wood was prepared by polymerization of furfuryl alcohol (FA) with hydrogen-MMT (H-MMT) used as catalyst. Poplar wood (Populus cathayana Rehd.) was delignified at first to increase its nanoporosity, and then impregnated with H-MMT/FA suspensions, followed by curing at 105 °C to form the MMT-catalyzed fufurylated wood hybrids. The H-MMT/FA suspensions were dispersed in the cell walls and cell lumens of delignified wood. The acidic catalyst, H-MMT, catalyzed in situ the polymerization of FA in wood, restrained the smoke emission of FA and provided catalytic sites for char formation under combustion. Additionally, H-MMT sheets can be used as an effective flame retardant due to its thermal and gas barrier properties. Cone calorimeter test showed that the total heat release of modified wood was decreased by 29% compared with original wood. The modified wood exhibited excellent flame retardancy by reducing the amount of flammable gases and impeding the diffusion of heat.

易燃性是木材不希望有的固有特性，它限制了其在许多结构应用领域中的使用。有机-无机混合改性提供了一种改善木材阻燃性的方法。在这项研究中，通过将糠醇（FA）与用作催化剂的氢-MMT（H-MMT）聚合，制备了蒙脱石（MMT）催化的糠醛化木材。白杨木（Populus cathayana Rehd。首先进行木质素脱木质处理以增加其纳米孔隙度，然后用H-MMT / FA悬浮液浸渍，然后在105°C下固化以形成MMT催化的糠醛化木材杂种。将H-MMT / FA悬浮液分散在木质素化木质素的细胞壁和细胞腔中。酸性催化剂H-MMT在木材中原位催化FA的聚合反应，抑制了FA的烟气排放，并为燃烧下形成焦炭提供了催化位。另外，由于H-MMT的热和气体阻隔性能，它可以用作有效的阻燃剂。锥形量热仪测试表明，改性木材的总热量释放量比原始木材减少了29％。改性木材通过减少可燃气体的数量并阻止热量散发而表现出出色的阻燃性。