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Abstract：
Kinetic models of solvent transport behaviors are widely used in rubber-solvent systems, and some key points are still worthy of attention. In this work, the Korsmeyer-Peppas and Peppas-Sahlin models were chosen to fit the transport behaviors of three aromatic solvents, benzene, toluene and p-xylene, in the hydrogenated nitrile rubber (HNBR)/ethylene propylene diene monomer (EPDM)-based vulcanizates. The different effects of the various selected transport times (ti) used for fitting on the results of the mathematical models were compared. Moreover, a method to obtain the n parameter for the Korsmeyer-Peppas model and the m parameter for the Peppas-Sahlin model at ti = 0 was discussed. It was found that the differences in values of ti greatly influenced the impact on the fitting results of all the parameters for the two models. In addition, the n parameter for the Korsmeyer-Peppas model along with the m parameter for the Peppas-Sahlin model, which can characterize the transport mechanism, showed differing applicability. But the n and m parameters at ti = 0 obtained by linear fitting showed similar rules with some differences in values. These discussions give important guidance for the application of kinetic transport models in rubber-solvent systems.
摘要：
溶剂传输行为的动力学模型广泛应用于橡胶-溶剂体系中，一些关键点仍然值得关注。在这项工作中,选择Korsmeyer-Peppas和Peppas-Sahlin模型来拟合三种芳族溶剂的运输行为，苯,甲苯和对二甲苯,在氢化丁腈橡胶(HNBR)/乙烯丙烯二烯单体(EPDM)基硫化橡胶中。比较了用于拟合的各种选定运输时间（ti）对数学模型结果的不同影响。此外，讨论了在ti=0时获得Korsmyer-Peppas模型的n参数和Peppas-Sahlin模型的m参数的方法。发现ti值的差异极大地影响了两个模型的所有参数的拟合结果。此外,Korsmeyer-Peppas模型的n参数以及Peppas-Sahlin模型的m参数，可以表征传输机制，表现出不同的适用性。但是，通过线性拟合获得的ti=0时的n和m参数显示出相似的规则，但数值存在一些差异。这些讨论为动力学输运模型在橡胶-溶剂体系中的应用提供了重要指导。
