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Dielectric properties of aluminum-epoxy composites

机译：铝-环氧复合材料的介电性能

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Dielectric properties of Al-epoxy composites were characterized as a function of composition, frequency, and temperature. The dielectric constant increased smoothly with an increase in the concentration of aluminum. An increase in dielectric constant was also observed with an increase in temperature as well as with a decrease in frequency. In general, dissipation factor values for composites with higher concentrations of aluminum were greater than those with lower volume content of aluminum. Also, the dissipation factor showed an increase both with a decrease in frequency and an increase in temperature. The increase in values of dielectric constant and dissipation factor with an increase in concentration of aluminum was attributed to interfacial polarization. The absence of any discontinuity in the plot of dielectric constant versus composition was ascribed to the absence of continuous aluminum chains in the composition range investigated. The increase in dielectric constant with a rise in temperature was attributed to the segmental mobility of the polymer molecules. (C) 2003 Wiley Periodicals, Inc. [References: 32]
机译：Al-环氧树脂复合材料的介电性能被表征为成分，频率和温度的函数。介电常数随着铝浓度的增加而平滑地增加。随着温度的升高和频率的降低，还观察到介电常数的增加。通常，铝含量较高的复合材料的耗散系数值大于铝含量较低的复合材料的耗散系数值。而且，耗散因数显示出随频率降低和温度升高而增加。介电常数和耗散因数随铝浓度的增加而增加，归因于界面极化。在介电常数对组成的曲线图中没有任何不连续性归因于在所研究的组成范围内不存在连续的铝链。介电常数随温度升高而增加归因于聚合物分子的分段迁移率。 （C）2003 Wiley Periodicals，Inc. [参考：32]

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