Comparison between silicone rubber containing micro- and nano- size silica fillers [insulating material applications]
Comparison between silicone rubber containing micro- and nano- size silica fillers [insulating material applications]
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含微米级和纳米级二氧化硅填料的硅橡胶比较【绝缘材料应用】
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
E. Cherney
中科院分区：
文献类型：
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作者：
A. El;S. Jayaram;E. Cherney
在这项研究中，纳米尺寸的二氧化硅填料的影响进行了比较，在硅橡胶中使用ASTM 2303斜面跟踪和侵蚀试验的微米尺寸的填料。将填充有5 μ m/μ m平均尺寸的研磨二氧化硅的硅橡胶样品与填充有12 nm平均尺寸的气相二氧化硅的硅橡胶进行比较。采用漏电流低频分量和烧蚀体积两个指标对两种复合材料的性能进行了评价。虽然泄漏电流的基波分量不相关的侵蚀，泄漏电流的三次谐波分量显示出良好的相关性的侵蚀，在体积方面，和两种复合材料。基于侵蚀体积的结果，观察到硅橡胶中10重量%的纳米尺寸填料给出与用50重量%的微米尺寸填料获得的性能类似的性能。论述了纳米填料在有机硅复合材料中的优点。
In this study, the influence of nano-size silica filler is compared with micro-size filler in silicone rubber using the ASTM 2303 inclined plane tracking and erosion test. Silicone rubber samples filled with 5 /spl mu/m mean size ground silica are compared with silicone rubber filled with 12 nm average size fumed silica. Both the low frequency components of leakage current and eroded volume are used to evaluate the performance of the two types of composites. While the fundamental component of leakage current does not correlate with the erosion, the third harmonic component of the leakage current shows good correlation to the erosion, in terms of volume, and for both composites. Based on the results of the eroded volume, it is observed that 10% by weight of nano-size filler in the silicone rubber gives a performance that is similar to that obtained with 50% by weight of micro-size filler. The paper discusses the merits of nano-size filler in silicone composites.