文章基本信息

标题：Enhanced dielectric properties of epoxy resin with high content of nano-Al2O3 composites
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作者：Dandan Xu ; Tingting Wang ; Xinghao Han 等
期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：108
期号：2
页码：022074
DOI：10.1088/1755-1315/108/2/022074
语种：English
出版社：IOP Publishing
摘要：Epoxy resin was modified by adding different contents (30%, 60% wt.) of nano-Al₂O₃ particles, which were modified by silicon coupling agent KH560 (γ-amino propyl triethoxy silane), in the form of nano-Al₂O₃ particles/epoxy composites, via casting method to improve the dielectric properties. The chemical structures of modified and unmodified nano-Al₂O₃ particles and the morphologies of composites fractures were characterized by Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM) respectively. And the thermal property and dielectric properties were also investigated. The results showed the modified nano-Al₂O₃ particles well dispersed in the epoxy matrix and the thermal stability of composites was improved. And the dielectric constant of the composites was up to 14 when the content of nano-Al₂O₃ was 60%, which was 2 times larger than that of pure epoxy. Moreover, the composites also exhibited good dielectric property under high frequencies ranged from 1x107 to 4x107 Hz.