Considering the reduction of fire hazards associated with the application of epoxy resin (EP) composites. Herein, a novel sodium-containing polyhedral oligomeric phenyl silsesquioxane (Na-Ph-POSS) has been synthesized through hydrolysis condensation. FTIR, NMR and MALDI-TOF MS results reveal that Na-Ph-POSS is a hepta-phenyl POSS consisting of Si–O–Na and Si–OH groups. Compared to pure EP, according to the combustion results, the peak of heat release rate (p-HRR), the maximum smoke density (Ds, max) and the peak of CO production rate (p-COP) of EP/5 wt% Na-Ph-POSS significantly decrease by 45.9, 45.1 and 46.9%, respectively. Additionally, EP composites endowed with Na-Ph-POSS have low dielectric constant and dielectric loss. Therefore, eco-friendly multifunctional Na-Ph-POSS provides a promising prospect for mitigating the fire hazards of EP composites.

考虑减少与环氧树脂（EP）复合材料的应用相关的火灾隐患。本文中，通过水解缩合合成了一种新型的含钠多面体低聚苯基倍半硅氧烷（Na-Ph-POSS）。FTIR，NMR和MALDI-TOF MS结果表明，Na-Ph-POSS是由Si-O-Na和Si-OH基团组成的七苯基POSS。与纯EP相比，根据燃烧结果，EP / 5 wt％的放热率峰值（p-HRR），最大烟气密度（Ds，max）和CO产生率峰值（p-COP） Na-Ph-POSS分别显着降低45.9％，45.1％和46.9％。另外，赋予Na-Ph-POSS的EP复合材料具有低介电常数和介电损耗。因此，