当前位置: X-MOL 学术Mech. Time Depend. Mat. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Rheological constitutive equations for glassy polymers, based on trap phenomenology
Mechanics of Time-Dependent Materials ( IF 2.1 ) Pub Date : 2018-12-19 , DOI: 10.1007/s11043-018-09407-8
G. Spathis , E. Kontou

The present work comprises an upgraded version of a previous research of ours, referring to the evaluation of viscoelastic functions in a broad frequency and time scale. Our analysis is based on the assumption that the polymeric structure consists of an ensemble of meso-regions, with their own energy barrier, which follows a distribution. Through a cooperative process, the meso-regions are linked to each other, and perform rearrangements by changing their positions. The time-dependent behavior is controlled by the distribution energy barriers. In the present analysis, the distribution function will be evaluated by the experimental data of loss modulus. Hereafter, the viscoelastic functions can be evaluated, with further parameters. In addition, the temperature dependence of storage and loss modulus at a constant frequency can be described within the context of the proposed model.



中文翻译:

基于陷阱现象学的玻璃态聚合物流变本构方程

目前的工作包括我们先前研究的升级版本,涉及在较宽的频率和时间范围内对粘弹性函数的评估。我们的分析是基于这样的假设,即聚合物结构由介孔区的整体组成,介孔区具有其自身的能垒,该能垒遵循分布。通过协作过程,中观区域相互链接,并通过更改其位置进行重新排列。时间相关的行为由分布能垒控制。在本分析中,将通过损耗模量的实验数据来评估分布函数。此后,可以使用其他参数评估粘弹性函数。此外,

更新日期:2018-12-19
down
wechat
bug