Improved Maxwell Model Approach and its Applicability toward Lifetime Prediction of Biobased Viscoelastic Fibers,Macromolecular Materials and Engineering

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Improved Maxwell Model Approach and its Applicability toward Lifetime Prediction of Biobased Viscoelastic Fibers
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2021-09-02 , DOI: 10.1002/mame.202100443
Christina Schippers ₁ , Larisa A. Tsarkova _{1,

2} , Thomas Bahners ₁ , Jochen S. Gutmann _{1,

3} , Ernst Cleve ₄

Affiliation

The evaluation of relaxation measurements is a well-established technique for predicting the lifetime of polymer materials, with research primarily focusing on increasing prediction accuracy and minimizing material testing time. The current study presents a novel approach toward describing the long-term behavior of viscoelastic polymers based on the Maxwell model. It assumes a mean relaxation time of the polymer chains in conjunction with a dimensionless number that accounts for averaged polymer chain inhomogeneities. This coefficient is analogous to the dimensionless number, which successfully describes the asymmetry of both the Weibull distribution and of particle size distribution according to the Rosin, Rammler, Sperling and Bennet model. In comparison to earlier models based on time-superposition principles, the current approach enables lifetime prediction using a single short-term measurement, which must be taken at a properly chosen applied strain. The applicability of the new model in predicting the long-term behavior has been demonstrated by the analysis of the relaxation behavior of semi-crystalline bio-based fibers.

中文翻译：

改进的麦克斯韦模型方法及其对生物基粘弹性纤维寿命预测的适用性

松弛测量的评估是一种成熟的预测聚合物材料寿命的技术，研究主要集中在提高预测精度和最大限度地减少材料测试时间。目前的研究提出了一种基于麦克斯韦模型来描述粘弹性聚合物长期行为的新方法。它假定聚合物链的平均弛豫时间与解释平均聚合物链不均匀性的无量纲数相结合。该系数类似于无量纲数，它根据 Rosin、Rammler、Sperling 和 Bennet 模型成功地描述了威布尔分布和粒度分布的不对称性。与基于时间叠加原理的早期模型相比，the current approach enables lifetime prediction using a single short-term measurement, which must be taken at a properly chosen applied strain. 通过对半结晶生物基纤维的松弛行为的分析，证明了新模型在预测长期行为方面的适用性。

更新日期：2021-09-02

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