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首页> 外文期刊>Polymers for advanced technologies >Flame retardant effects of organic inorganic hybrid intumescent flame retardant based on expandable graphite in silicone rubber composites
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Flame retardant effects of organic inorganic hybrid intumescent flame retardant based on expandable graphite in silicone rubber composites

机译:基于可膨胀石墨的有机无机杂化膨胀型阻燃剂在硅橡胶复合材料中的阻燃效果

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摘要

In this work, an organic inorganic hybrid intumescent flame retardant (functionalized expandable graphite, FEG) was synthesized and characterized by Fourier transform infrared spectrometry (FTIR). The flame retardant effects of FEG in silicone rubber (SR) composites were investigated by cone calorimeter test (CCT), and the thermal stability of SR composites was studied using TGA. The CCT results showed that FEG can effectively reduce the flammable properties including peak heat release rate (PHRR), total heat release (THR), smoke production rate (SPR), total smoke release (TSR), and smoke factor (SF). An improvement of thermal stability of SR/FEG was also observed. Compared with EG, FEG can further reduce THR, SPR, and TSR of SR/FEG composites in combustion process. Moreover, there is a more obvious intumescent char layer formed from the sample with FEG than the sample with EG at the same loading in SR composites.
机译:在这项工作中,合成了有机无机杂化膨胀型阻燃剂(功能化可膨胀石墨,FEG),并通过傅里叶变换红外光谱法(FTIR)进行了表征。通过锥形量热试验(CCT)研究了FEG在硅橡胶(SR)复合材料中的阻燃作用,并使用TGA研究了SRG复合材料的热稳定性。 CCT结果表明,FEG可有效降低可燃性,包括峰值放热率(PHRR),总放热(THR),烟雾产生率(SPR),总烟雾释放(TSR)和烟雾因子(SF)。还观察到了SR / FEG的热稳定性的改善。与EG相比,FEG可以进一步降低SR / FEG复合材料在燃烧过程中的THR,SPR和TSR。此外,在相同的负荷下,含FEG的样品比含EG的样品形成的膨胀炭层更明显。

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