We invented a dispersion analysis program that analyzes the relaxation processes from dielectric permittivity based on a combination of the Havriliak–Negami and conductivity contribution functions. By applying the created program to polymers such as nitrile butadiene rubber (NBR) and ethylene propylene diene monomer (EPDM), several relaxation processes were characterized: an α process due to segmental motions of the C-C bond, an α′ process attributed to fluctuations in the end-to-end dipole vector of the polymer chain, the conduction contribution by the filler observed above room temperature, and secondary relaxation processes β and γ of motion for the side group in NBR. In the EPDM specimen, the β process associated with the rotational motion of the side groups, the α process associated with the relaxation of local segmental motion, and the αβ process associated with the origin of the β process at high temperatures above 305 K were observed. The Maxwell–Wagner–Sillars effect and conduction contribution were also presented. The molecular chains responsible for the relaxation processes were assigned by building molecular models of the two polymers. The temperature dependence of the relaxation strength and the shape parameters that characterize the process were investigated. From the temperature-dependent relaxation analysis, the merged αβ process, activation energy, and glass transition temperature were determined and compared.

中文翻译：

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聚合物的介电弛豫过程的阻抗谱表征：丁腈橡胶和乙烯丙烯二烯单体

我们发明了一种色散分析程序，该程序基于Havriliak–Negami和电导率贡献函数的组合来分析介电常数的弛豫过程。通过将创建的程序，以聚合物，如丁腈橡胶（NBR）和乙烯丙烯二烯单体（EPDM），几个弛豫过程进行表征：一个α过程中由于CC键的节段性运动，一个α '过程归因于波动聚合物链的端到端偶极子矢量，室温下观察到的填料的传导贡献以及NBR中侧基的次级松弛过程β和γ。在EPDM样品中，β在高于305 K的高温下，观察到了与侧基团的旋转运动相关的α过程，与局部节段运动的松弛相关的α过程以及与β过程的起源相关的αβ过程。还介绍了麦克斯韦-瓦格纳-西拉效应和传导贡献。通过建立两种聚合物的分子模型来分配负责松弛过程的分子链。研究了松弛强度的温度依赖性以及表征该过程的形状参数。从温度相关的弛豫分析中，确定并比较了合并的αβ过程，活化能和玻璃化转变温度。