Dielectric properties of Ni/Poly(vinylidene fluoride) composites at high frequencies
Refereed conference paper presented and published in conference proceedings

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摘要The metal-polymer composites can possess a high dielectric constant with low filler content, and preserve the flexibility of the polymer matrix. Nickel (Ni) powder could be cheaply obtained through aqueous chemical reduction and not easily oxidized in air. In this study, composites of poly(vinylidene fluoride) (PVDF) filled with 0.7μm (average size) of metallic particles of nickel (Ni) were prepared via a grinding and hot-molding technique. The peak crystallization temperature (Tcp) of the composites shifts by around 4.5°, from ∼128.5° for PVDF to ∼133° for the composites with 10wt% filler. The crystallization data indicates that the crystallinity of PVDF decreases with the increase of Ni content. The dielectric permittivity of the composite filled with 65wt% Ni particles is 800 at the frequency of 107Hz, while the dielectric loss tangent is about 1.6. The reason of high dielectric constant could be explained by the microcapacitor model and percolative theory. The easy processing, flexibility, and high dielectric constant of the composites make the composites attractive for practical applications in embedded capacitors. © 2010 IEEE.
著者He G., Zhao T., Sun R., Yu S., Du R.
會議名稱2010 11th International Conference on Electronic Packaging Technology and High Density Packaging, ICEPT-HDP 2010
會議開始日16.08.2010
會議完結日19.08.2010
會議地點Xi'an
會議國家/地區中國
出版年份2010
月份11
日期24
頁次452 - 455
國際標準書號9781424481422
語言英式英語

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