To enhance the fire retardance of polycarbonate (PC), a novel organic-inorganic hybrid particle containing phosphorus and silicon (SiO₂@DPP) was synthesized through a facile hydrothermal reaction. Different measurements verified that the SiO₂@DPP was prepared successfully. After incorporation of the SiO₂@DPP into PC, it was found that the flame retardancy of PC was greatly affected by only small amount of SiO₂@DPP. The PC containing only 0.8 wt% SiO₂@DPP passed the UL-94 V-0 rating in vertical combustion test and had the limiting oxygen index (LOI) of 29.3%. Moreover, the dripping behavior of PC was also restricted in this case. In cone calorimetry test, the peak heat release rate (PHRR) and the peak smoke production rate (PSPR) of PC were correspondingly remarkably reduced by 41.6% and 15.4% in the presence of only 0.8 wt% SiO₂@DPP. Moreover, the flame-retardant mechanism of the SiO₂@DPP was also investigated in detail through different measurements. The results demonstrated that the phosphorus-containing substances and SiO₂ left in the condensed phase and some structures containing phosphorus in gaseous phase had great contribution to excellent fire retardance of PC/SiO₂@DPP. All these results demonstrate that the SiO₂@DPP is an efficient organic-inorganic hybrid material for preparing fire-retardance PC.

为了提高聚碳酸酯（PC）的阻燃性，通过简便的水热反应合成了一种新型的含磷和硅的有机-无机杂化颗粒（SiO ₂ @DPP）。不同的测量结果证明已成功制备了SiO ₂ @DPP。将SiO ₂ @DPP掺入PC后，发现PC的阻燃性仅受少量SiO ₂ @DPP的影响很大。仅包含0.8 wt％SiO ₂的PC@DPP在垂直燃烧测试中通过了UL-94 V-0评级，极限氧指数（LOI）为29.3％。而且，在这种情况下，PC的滴落行为也受到限制。在锥形量热测试中，在仅存在0.8 wt％SiO ₂ @DPP的情况下，PC的峰值放热率（PHRR）和峰值烟雾产生率（PSPR）分别显着降低了41.6％和15.4％。此外，还通过不同的测量方法详细研究了SiO ₂ @DPP的阻燃机理。结果表明，凝结相中残留的含磷物质和SiO ₂以及气相中的某些含磷结构对PC / SiO _2的优良阻燃性有很大贡献。@DPP。所有这些结果表明，SiO ₂ @DPP是制备阻燃PC的有效有机-无机杂化材料。