arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2202.04065cond-mat.softcond-mat.mtrl-sci
收藏

高度交联Polymer网络的计算缩进

Computational Indentation in Highly Cross-linked Polymer Networks

Manoj Kumar Maurya, Céline Ruscher, Debashish Mukherji, Manjesh Kumar Singh

摘要:

压痕法是研究高分子材料力学性能的常用实验方法。使用压痕的主要优点是因为这提供了微观结构和小尺度机械响应之间的直接相关性,这在标准拉伸测试中是困难的。在这里,大多数研究已经研究了水凝胶、微凝胶和/或弹性体。然而,一个较少研究的系统是高度交联的聚合物(HCP)网络中的压痕,其中复杂的网络结构在决定其物理性质方面起着关键作用。在这项工作中,我们调查的HCP网络的结构与性能的关系,使用的通用模型的计算缩进。我们建立了局部键断裂,网络重排,和小尺度力学之间的相关性。并与弹-塑性形变模型进行了比较。HCP在压痕时硬化。

英文摘要:

Indentation is a common experimental technique to study the mechanics of polymeric materials. The main advantage of using indentation is because this provides a direct correlation between the microstructure and the small-scale mechanical response, which is otherwise difficult within the standard tensile testing. Here, majority of studies have investigated hydrogels, microgels and/or elastomers. However, a lesser investigated system is the indentation in highly cross-linked polymer (HCP) networks, where the complex network structure plays a key role in dictating their physical properties. In this work, we investigate the structure-property relationship in HCP networks using the computational indentation of a generic model. We establish a correlation between the local bond breaking, the network rearrangement, and the small-scale mechanics. The results are compared with the elastic-plastic deformation model. HCPs harden upon indentation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑