The flammability behaviors of ammonium polyphosphate/aluminum hydroxide/mica/silicone rubber (APP/Al[OH]₃/mica/SiR) ceramifying composites containing APP, Al[OH]₃, and mica are investigated by cone calorimeter test. The thermal degradation and the synergistic effect of APP/Al(OH)₃/mica/SiR composites are investigated by thermal gravimetric analysis, X‐ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, and X‐ray photoelectron spectroscopy. APP/Al(OH)₃/mica/SiR composites with 25 wt% of APP, 20 wt% of Al(OH)₃, 25 wt% of mica, and 30 wt% SiR presents a much lower total heat release, the value of peak heat release rate (PHRR), the maximum average heat release rate, the longest time to ignition, and time to the PHRR (t_PHRR), compared with the flame‐retardant properties from composites with filler of APP and mica or APP and Al(OH)₃ alone. The results indicate that there is an excellent synergism in APP, Al(OH)₃, and mica, which endows APP/Al(OH)₃/mica/SiR composites with both good flame retardancy and fire prevention. The study on the synergism effect between fire prevention and flame retardancy of APP/Al(OH)₃/mica/SiR composites indicates that compounds containing P‐O‐Al are formed due to the reaction between APP and Al(OH)₃ during combustion in the early stage and a coherent, dense, and sealed structure is formed due to the reaction in mica, phosphates, and the thermal decomposition products of SiR during combustion in the later stage.

中文翻译：

---

聚磷酸铵/氢氧化铝/云母/硅橡胶复合材料的阻燃性能及协同效应

通过锥形量热仪研究了含有APP，Al [OH] ₃和云母的聚磷酸铵/氢氧化铝/云母/硅橡胶（APP / Al [OH] ₃ /云母/ SiR）陶瓷复合材料的可燃性。通过热重量分析，X射线衍射，扫描电子显微镜，傅立叶变换红外光谱和X射线光电子能谱研究了APP / Al（OH）₃ /云母/ SiR复合材料的热降解和协同效应。具有25 wt％APP，20 wt％Al（OH）_3的APP / Al（OH）₃ /云母/ SiR复合材料，25 wt％的云母和30 wt％的SiR表现出低得多的总热量释放，峰值热量释放速率（PHRR）值，最大平均热量释放速率，最长的点火时间以及达到PHRR的时间（t _PHRR），与_仅含APP和云母或仅含APP和Al（OH）_3的填料的复合材料的阻燃性能相比。结果表明，APP，Al（OH）₃和云母具有优异的协同作用，赋予APP / Al（OH）₃ /云母/ SiR复合材料良好的阻燃性和防火性。APP / Al（OH）_3的阻燃与阻燃协同作用研究/云母/ SiR复合材料表明，含P-O-Al的化合物是由于APP和Al（OH）₃在早期燃烧过程中的反应而形成的，并且由于在反应中的反应而形成了连贯，致密和密封的结构云母，磷酸盐以及SiR在燃烧后期的热分解产物。