纳米复合材料
材料科学
电介质
色散(光学)
表征(材料科学)
聚乙烯
聚合物
复合材料
聚合物纳米复合材料
纳米颗粒
降级(电信)
介电强度
纳米技术
电子工程
光电子学
工程类
光学
物理
作者
Christopher Calebrese,L. Hui,Linda S. Schadler,J. K. Nelson
出处
期刊:IEEE Transactions on Dielectrics and Electrical Insulation
[Institute of Electrical and Electronics Engineers]
日期:2011-08-01
卷期号:18 (4): 938-945
被引量:146
标识
DOI:10.1109/tdei.2011.5976079
摘要
Study of the experimental literature regarding nanodielectrics indicates numerous inconsistencies in the results obtained. In many cases, the likely cause is due to a lack of quality control during nanocomposite processing. By examining examples from the literature along with an alumina/polyamideimide nanocomposite and silica/crosslinked polyethylene nanocomposite, this contribution seeks to shed light on some of the likely causes for these inconsistencies. Measurements of the dielectric breakdown strength and voltage endurance confirm that poor dispersion can lead to poor material performance and the use of quantitative techniques is highlighted. Good dispersion alone is not sufficient to achieve improved properties. The addition of nanoparticles can alter the resulting structure of the nanocomposites, can introduce water into the system resulting in cavity formation and can also result in degradation of the polymer if the processing parameters are not carefully selected. In this review, understanding the effects of nanoparticle addition requires not only characterization of relevant dielectric properties, but also careful control of the processing parameters and characterization of changes in polymer structure, particle dispersion, and water content.
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