In this work, an efficient approach to improving the fire retardancy and smoke suppression for intumescent flame‐retardant polypropylene (PP) composites is developed via incorporating functionalized sepiolite (organo‐modified sepiolite [ONSep]). The PP composites with different amounts of intumescent flame retardants and ONSep were prepared by melt compounding. The morphology, thermal behavior, fire retardancy, smoke suppression, and mechanical property of flame‐retardant PP composites were studied. The results indicate an appropriate amount of ONSep in the flame‐retardant PP composites can increase thermal degradation temperature and char formation as well as a reduction of the peak heat release rate and total heat release; moreover, the addition of ONSep significantly decreases the CO production, total smoke production, smoke production rate, and smoke temperature. Simultaneously, the impact strength of intumescent flame‐retardant PP composite is also maintained by introducing an appropriate amount of ONSep as compared with that without ONSep.

中文翻译：

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通过掺入有机改性的海泡石，提高膨胀型阻燃聚丙烯复合材料的阻燃性和抑烟性的有效方法

在这项工作中，通过掺入功能化的海泡石（有机改性的海泡石[ONSep]），开发了一种有效的方法来改善膨胀型阻燃聚丙烯（PP）复合材料的阻燃性和抑烟性。通过熔融混合制备了不同含量的膨胀型阻燃剂和ONSep的PP复合材料。研究了阻燃聚丙烯复合材料的形貌，热性能，阻燃性，抑烟性和力学性能。结果表明，在阻燃PP复合材料中加入适量的ONSep可以提高热降解温度和炭的形成，并降低峰值放热速率和总放热。此外，ONSep的加入会显着降低CO的产生，总烟气的产生，烟气的产生，和烟雾温度。同时，通过引入适量的ONSep与不添加ONSep相比，还可以保持膨胀型阻燃PP复合材料的冲击强度。