For improving the flame retardancy of epoxy resin (EP), β‐cyclodextrin@ ferrocene@hollow mesoporous silica microspheres (β‐CD@FE@HMS) were prepared successfully by the self‐assembly method. Then, they were used as flame retardant to improve the fire safety of EP. EP/β‐CD@FE and EP/HMS composites were also prepared for comparative study. The results showed that β‐CD@FE@HMS could effectively improve the thermal stability of EP, in which the initial degradation temperature and the amount of char residue of EP were increased. The content of small molecule toxic gases produced by the combustion of EP composite was also reduced apparently. With the addition of 5 wt% β‐CD@FE@HMS, LOI value of EP was increased to 27.5% from 19.8%, and UL‐94 reached V‐1 rating. Comparing with pure EP, the peak heat release rate and total heat release values of EP were reduced by 11.0% and 12.3%, respectively, and the total smoke production was reduced by 30.6%. EP/β‐CD@FE@HMS composite formed a higher quality char layer. Therefore, β‐CD@FE@HMS microspheres could improve the fire safety of EP.

中文翻译：

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β-CD@二茂铁@空心介孔二氧化硅微球的制备及其阻燃EP的研究

为了提高环氧树脂（EP）的阻燃性，通过自组装方法成功制备了β-环糊精@二茂铁@空心介孔二氧化硅微球（β-CD@ FE @ HMS）。然后，它们被用作阻燃剂以提高EP的防火安全性。还准备了EP /β-CD@ FE和EP / HMS复合材料用于比较研究。结果表明，β-CD@ FE @ HMS可以有效提高EP的热稳定性，从而提高了EP的初始降解温度和残炭量。EP复合材料燃烧产生的小分子有毒气体的含量也明显降低。通过添加5 wt％的β-CD@ FE @ HMS，EP的LOI值从19.8％增加到27.5％，UL-94达到V-1等级。与纯EP相比 EP的峰值放热率和总放热值分别降低了11.0％和12.3％，总烟雾产生量降低了30.6％。EP /β-CD@ FE @ HMS复合材料形成了更高质量的炭层。因此，β-CD@ FE @ HMS微球可以提高EP的防火安全性。