环氧树脂可靠性能检测 | Fe2O3·H2O纳米棒/环氧树脂复合材料的宽带介电性能-北京欧兰科技发展有限公司

方案摘要

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应用领域	石油/化工
检测样本	环氧树脂
检测项目	可靠性能
参考标准	暂无

采用立陶宛Ekspla公司的太赫兹时域光谱测量系统T-Spec，对Fe2O3·H2O纳米棒/环氧树脂复合材料的宽带介电性能进行了研究

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配置单

Ekspla T-SPEC 实时太赫兹（THz）光谱仪
型号：T-SPEC

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方案详情

A series of polymer composites based on epoxy resin with a 5–40 vol.% concentration of goethite (Fe2O3·H2O) nanorods was produced. The electrical percolation threshold in these composites was determined as 30 vol.% of nanorods. The dielectric properties of the composites both below and above the percolation threshold were studied in a wide temperature (200K–450 K) and frequency (from Hz to THz) ranges. The dielectric properties of composites below the percolation threshold are mainly determined by the relaxation in a pure polymer matrix. The electrical properties of composites above the percolation threshold
are determined by the percolation network, which is formed by the goethite nanorods inside the polymer matrix. Due to the finite conductivity of the epoxy resin, the electrical conductivity at high temperatures occurs in the composites both above and below the percolation threshold.

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