Urea-formaldehyde (UF)/carboxylated carbon nanotubes (CNTs-COOH) nanocomposite foams were prepared via in-situ polymerization. Chemical bonding and hydrogen bonding interactions formed between CNTs-COOH and UF matrix. UF resin adhered onto the ektexine of CNTs-COOH and grafting ratio of 496.41% was achieved. UF/CNTs-COOH foam showed smaller cell size, narrower cell size distribution and lower water absorption compared with UF foam. Introduction of 0.25 wt% CNTs-COOH resulted in 58.43% increase in compressive strength. CNTs-COOH were pulled out with surface covered with UF resin under stress and the failure mode was the destruction of matrix around interfacial layer. UL-94V-0 rating was achieved for the composite foams.

通过原位聚合制备脲甲醛（UF）/羧化碳纳米管（CNTs-COOH）纳米复合泡沫。CNTs-COOH与UF基体之间形成化学键和氢键相互作用。UF树脂附着在CNTs-COOH的表面活性剂上，接枝率为496.41％。与UF泡沫相比，UF / CNTs-COOH泡沫显示出较小的孔尺寸，较窄的孔尺寸分布和较低的吸水率。引入0.25wt％的CNTs-COOH导致抗压强度增加58.43％。在应力作用下将碳纳米管-COOH的表面拉出，并用UF树脂覆盖，破坏模式为破坏界面层周围的基体。复合泡沫达到了UL-94V-0等级。