The dielectric response of two bisphenol-A epoxy resin systems Araldite CY1301 (Tg ~ 50°C) and Araldite CY1311 (Tg ~0°C) was studied at different levels of absorbed moisture. The dielectric measurements were carried out over the frequency range 1 mHz to 100 kHz and the results were characterised in terms of dc bulk electrical conduction and dielectric processes. The characteristic parameters (frequency and magnitude) of all processes have been found to be moisture dependent. In both resins above the glass transition temperature, absorbed moisture was found to be implicated in the formation of a bulk quasi-dc dielectric response consistent with cluster formation of the absorbed water molecules.
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机译：研究了两种双酚A环氧树脂体系Araldite CY1301（T g 〜50°C）和Araldite CY1311（T g 〜0°C）的介电响应吸收水分的水平。介电测量是在1 mHz至100 kHz的频率范围内进行的，其结果以直流体电导通和介电过程为特征。已经发现所有过程的特征参数（频率和幅度）都取决于湿度。在高于玻璃化转变温度的两种树脂中，发现吸收的水分与形成与吸收的水分子的团簇形成一致的本体准直流电介质响应有关。
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