Plastic combustion has adverse impacts on air quality and human health. In this work, a novel non-aromatic Si, P, N-containing hyperbranched flame retardant (HPNSi) was synthesized and proposed to epoxy resin. The modified epoxy exhibits not only reduced fire hazards and less smoke production in favour of eco-friendly, but also remarkable mechanical properties and lower curing temperature for facile processability. With 6 wt.% incorporation, the peak heat release and total smoke production were reduced by 29.6% and 20.7%, respectively, and the time to ignition (TTI) increased as well as the fire growth rate (FIGRA) dropped off, which is of vital significance for saving lives in a fire. Meanwhile, the impact strength and flexural strength greatly enhanced by 72.9% and 22.0%, while its curing temperature was lower than that of controlled EP system. Interestingly, we also found that the solid carbon particles on the char surface apparently reduced from SEM image. The blending of its unique non-aromatic hyperbranched structure containing Si, P, N with epoxy architecture was responsible for the desirable integrated enhancement. The broad possibilities in the field of flame-retardant plastic with reduced fire hazards and excellent integrated performance enable the novel hyperbranched flame retardant a bright future for application.

塑料燃烧对空气质量和人类健康有不利影响。在这项工作中，一种新型的非芳香族含硅、磷、氮的超支化阻燃剂 ( HPNSi) 被合成并建议用于环氧树脂。改性环氧树脂不仅表现出降低火灾危险和减少烟雾产生，有利于环保，而且还具有显着的机械性能和较低的固化温度，易于加工。掺入 6 wt.% 后，峰值放热量和总产烟量分别降低了 29.6% 和 20.7%，点火时间 (TTI) 增加，火灾增长率 (FIGRA) 下降，即对在火灾中挽救生命具有重要意义。同时，冲击强度和弯曲强度大大提高了72.9%和22.0%，而其固化温度低于受控EP体系。有趣的是，我们还发现从 SEM 图像中炭表面的固体碳颗粒明显减少。其独特的包含 Si、P、N 的非芳香族超支化结构与环氧树脂结构的混合导致了理想的集成增强。阻燃塑料领域的广泛可能性，降低了火灾危险，并具有优异的综合性能，使新型超支化阻燃剂具有广阔的应用前景。