硅纳米复合材料的热重和光谱分析

2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2008-10-01 DOI:10.1109/CEIDP.2008.4772845

I. Ramirez, E. Cherney, S. Jayaram, M. Gauthier

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引用次数: 7

摘要

本研究采用纳米气相二氧化硅、纳米天然二氧化硅和纳米氧化铝等纳米填料对硅橡胶进行补强。通过热重分析(TGA)分析了纳米填充样品的热降解过程。TGA证实，纳米气相二氧化硅比纳米天然二氧化硅或纳米氧化铝填料在与Tritontrade分散时具有更好的耐热性。利用傅里叶变换红外光谱(FTIR)分析了纳米填料提高有机硅复合材料耐热性和耐蚀性的机理。红外光谱分析表明，纳米气相二氧化硅填充样品中的硅醇基团浓度明显高于微二氧化硅填充样品。讨论了硅醇基数量的增加对纳米复合材料耐侵蚀性能的影响。

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Thermogravimetric and Spectroscopy Analyses of Silicone Nanocomposites

In this research, nanofillers, such as nano fumed silica, nano natural silica and nano alumina, are used to reinforce silicone rubber. The thermal degradation of the nanofilled samples are analyzed through thermal gravimetric analysis (TGA). TGA confirms that nano fumed silica imparts better heat resistance to silicone than nano natural silica or nano-alumina filler when dispersed with Tritontrade. Fourier transform infrared (FTIR) spectroscopy is used to elucidate the mechanism by which the nanofillers improve the heat and erosion resistance of silicone composites. FTIR analysis indicates a significantly higher concentration of silanol groups in the nano fumed silica filled samples than in the micro-silica filled samples. The influence of the increased number of silanol groups on the erosion resistance of the nanocomposites is discussed.

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2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena

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