环氧树脂
材料科学
纳米复合材料
傅里叶变换红外光谱
复合材料
电阻率和电导率
表面改性
纳米颗粒
色散(光学)
聚合物
体积热力学
复合数
化学工程
纳米技术
工程类
物理
光学
电气工程
量子力学
作者
Muhammad Zeeshan Khan,Feipeng Wang,Jian Li,Muhammad Arshad Shehzad Hassan,Jawad Ahmad,He Li,Kaizheng Wang
标识
DOI:10.1109/ichve.2018.8642009
摘要
Surface modification is an efficient approach to improve the dispersion of alumina nanoparticles. In addition, it is also useful for improving the electrical properties of polymer nanocomposites. In this work, alumina nanoparticles were treated by the saline coupling agent of γ-Aminopropyltriethoxysilane (KH550) to restrict the aggregation. The chemical bonding was examined by Fourier Transform Infrared Spectroscopy (FTIR). Experiment results confirmed that the chemical bond was formed between alumina and KH550 after modification. The modified epoxy/alumina has more traps which results in larger volume resistivity which is 2.22×10 17 Ω/cm when the alumina content is 1wt%. With increase of the filler concentration, e.g. 3 and 5 wt%, many over lapping interaction zones occur so that the effect of deep traps is gradually weakened and the effect of shallow traps is increased which resulting the decreased volume resistivity. The modified alumina/epoxy resin nanocomposite shows a higher AC breakdown strength as compare to unmodified nanocomposites.
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