填充橡胶的有限粘弹性：实验与数值模拟
材料科学
2007-05-23 v1
摘要
推导了在等温加载下具有有限应变的颗粒增强橡胶的粘弹性本构方程。将填充橡胶视为一种复合介质，其中具有高和低链间结合浓度的颗粒随机分布在基质矩阵中。高结合浓度颗粒与孤立填料及其次级网络周围链段运动受抑制的区域相关联。低结合浓度颗粒区域在混合过程中由于交联剂的空间分布不均匀性而出现。橡胶的粘弹性响应可归因于低结合浓度区域中链段断裂和重组的热激活过程。开发了用于颗粒增强橡胶的应力-应变关系，通过利用热力学定律。通过拟合未填充和炭黑(CB)填充橡胶的拉伸松弛实验数据，确定了本构方程中的可调参数。 demonstrated that the relaxation rate is noticeably affected by strains. Unlike glassy polymers, where the growth of longitudinal strain results in an increase in the rate of relaxation, the growth of the elongation ratio for natural rubber (unfilled or CB reinforced) implies a decrease in the relaxation rate, which may be explained by partial crystallization of chains in the regions with low concentration of junctions.
引用
@article{arxiv.cond-mat/0110110,
title = {Finite viscoelasticity of filled rubbers: experiments and numerical simulation},
author = {Aleksey D. Drozdov and Al Dorfmann},
journal= {arXiv preprint arXiv:cond-mat/0110110},
year = {2007}
}
备注
33 pages, 10 figures