A fluorine-functionalized zirconium-based metal organic framework (F₄-UiO-66) was successfully synthesized via the reflux method, and the F₄-UiO-66/BT nanocomposites of F₄-UiO-66 modified bismaleimide-triazine resin (BT resin) were prepared. The effects of F₄-UiO-66 on the crosslinking structure and properties of BT resin were evaluated for the first time. The investigations showed that the active H in F₄-UiO-66 effectively catalyzed the self-polymerization of cyanate ester and promoted the formation of more rigid triazine rings which increased the initial storage modulus of nanocomposites. But the steric hindrance effect of F₄-UiO-66 reduced the crosslinking density, which increased the free volume of nanocomposites. So, the dielectric constants of the nanocomposites were significantly reduced with the increase of F₄-UiO-66 for the reduction of molecular polarization due to triazine rings and C–F bonds, and the decrease of polarization density caused by the nanopores and free volume. In addition, F₄-UiO-66 was evenly dispersed in BT resin. On the basis of maintaining the thermal stability, the toughness and hydrophobic properties of nanocomposites were also enhanced. This study provided a novel approach for low-dielectric materials with hydrophobic property through the synergy between the nanopores and the C–F bonds.

通过回流法成功合成了氟官能化锆基金属有机骨架材料（F ₄ -UiO-66），并得到了F ₄ -UiO-66改性双马来酰亚胺-三嗪树脂的F ₄ -UiO-66/BT纳米复合材料（ BT树脂）。首次评价了F ₄ -UiO-66对BT树脂交联结构和性能的影响。研究表明，F ₄ -UiO-66中的活性H有效地催化了氰酸酯的自聚合，并促进了更刚性的三嗪环的形成，从而提高了纳米复合材料的初始储能模量。但 F ₄的位阻效应-UiO-66 降低了交联密度，从而增加了纳米复合材料的自由体积。因此，纳米复合材料的介电常数随着 F ₄ -UiO-66的增加而显着降低，以减少由于三嗪环和 C-F 键引起的分子极化，以及由纳米孔和自由体积引起的极化密度降低. 此外，F ₄ -UiO-66 均匀分散在BT树脂中。在保持热稳定性的基础上，纳米复合材料的韧性和疏水性能也得到增强。该研究通过纳米孔和 C-F 键之间的协同作用为具有疏水性的低介电材料提供了一种新方法。