TiO/sub /纳米复合材料的电学性能

2003 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 2003-10-19 DOI:10.1109/CEIDP.2003.1254955

J. K. Nelson, Y. Hu, J. Thiticharoenpong

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引用次数: 29

摘要

将38纳米二氧化钛纳米颗粒掺入环氧树脂基体中，形成纳米复合结构。这种材料的实际用途已经通过仔细测量它们的电强度来评估，这些电强度是使用凹形样品作为颗粒载荷的函数，并与用微尺度TiO/sub 2/填料配制的等效传统树脂进行比较。结果表明，纳米配方材料具有显著的优势，与先前通过脉冲电声测量确定的内部空间电荷积累的已知减少保持一致。此外，还证明了最佳载荷约为10%(按重量计)。基于额外的热激发电流和电致发光数据，提出了一些建议，以解释捕获纠缠对麦克斯韦-瓦格纳效应的缓解作用。

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Electrical properties of TiO/sub 2/ nanocomposites

The incorporation of 38 nm titanium dioxide nanoparticles into an epoxy matrix to form a nanocomposite structure is described. The practical use of such materials has been evaluated through careful measurements of their electric strength made using recessed specimens as a function of particulate loading in comparison with an equivalent conventional resin formulated with micro-scale TiO/sub 2/ filler. The results would suggest that significant advantages accrue from the nano-formulated material in keeping with the known reduction in internal space charge accumulation earlier determined by pulse electroacoustic measurements. Furthermore, it is demonstrated that an optimum loading is indicated at about 10% (by weight). Based on additional thermally stimulated current and electroluminescence data, some suggestions are advanced which explain the improved performance in terms of the mitigating effects of trapped entanglement on the Maxwell-Wagner effect.

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2003 Annual Report Conference on Electrical Insulation and Dielectric Phenomena

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