The modified graphene oxide (GO) with different specific functional groups were prepared and introduced into rigid polyurethane foam (PUF). It was proved that NCO groups were bonded on the surface of GO, which could participate into the polyurethane foaming reaction and dramatically improve the interactions between the filler and matrix. It was found that the cell morphology and the mechanical properties of the PUFs could be effectively improved by adding an appropriate amount of modified GO. The isocyanate‐modified GO could form a stable chemical bond with the matrix, which was more beneficial to improve the mechanical properties. The thermal conductivity slightly increased with the increase of modified GO, however the values were still low enough for thermal insulation applications. Thus, these nanocomposite foams with improved structure and properties would find wide applications in the thermal insulation areas.

中文翻译：

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功能性异氰酸酯改性氧化石墨烯硬质聚氨酯纳米复合泡沫塑料的制备与性能

制备了具有不同特定官能团的改性氧化石墨烯（GO），并将其引入硬质聚氨酯泡沫塑料（PUF）中。它证明了NCO基团键合在GO的表面，可以参与聚氨酯的发泡反应并显着改善填料与基体之间的相互作用。发现通过加入适量的改性GO可以有效地改善PUF的细胞形态和机械性能。异氰酸酯改性的GO可以与基体形成稳定的化学键，这对改善机械性能更有利。导热系数随改性GO的增加而略有增加，但是对于隔热应用而言，该值仍然足够低。因此，这些具有改善的结构和性能的纳米复合泡沫材料将在隔热领域中得到广泛的应用。