低纳米填料负载下环氧纳米复合材料介电常数的降低

2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2008-10-01 DOI:10.1109/CEIDP.2008.4772804

S. Singha, M. Thomas

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引用次数: 22

摘要

实验研究表明，在较宽的频率范围内，与纯环氧树脂相比，低填料负载下环氧纳米复合材料的介电常数值有所降低。这种介电常数的降低归因于纳米颗粒和环氧链在界面区域的相互作用动力学，有趣的是，这种相互作用也被发现影响了所研究的纳米复合体系的玻璃化转变温度(Tg)。因此，分析了环氧基纳米复合材料体系的双纳米层界面模型来解释所获得的介电常数特性。

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Reduction of Permittivity in Epoxy Nanocomposites at Low Nano-filler Loadings

Experimental studies reveal a reduction in the values of permittivity for epoxy nanocomposites at low filler loadings as compared to neat epoxy over a wide frequency range. This permittivity reduction is attributed to the interaction dynamics between nanoparticles and epoxy chains at the interface region and interestingly, this interaction has also been found to influence the glass transition temperatures (Tg) of the examined nanocomposite systems. Accordingly, a dual nanolayer interface model for an epoxy based nanocomposite system is analyzed to explain the obtained permittivity characteristics.

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2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena

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