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丁腈橡胶密封件的面向设计的降解映射和超弹性模型切换指南

Design-Oriented Degradation Mapping and Hyperelastic Model-Switch Guidelines for Nitrile-Butadiene Rubber Seals.

作者信息

Choi Na-Yeon, Kim Dong-Seok, Zhang Sung-Uk

机构信息

Digital Twin Laboratory, Dong-Eui University, 176 Eomgwang-ro, Busan 47340, Republic of Korea.

Center for Brain Busan 21, Dong-Eui University, 176 Eomgwang-ro, Busan 47340, Republic of Korea.

出版信息

Polymers (Basel). 2025 Aug 27;17(17):2316. doi: 10.3390/polym17172316.

DOI:10.3390/polym17172316
PMID:40942236
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12431286/
Abstract

Nitrile-butadiene rubber (NBR) seals used in automotive and energy equipment undergo pronounced mechanical degradation at elevated temperatures, yet a quantitative rule for switching between hyperelastic models remains unclear. Here, accelerated thermal aging tests were linked to service conditions by estimating the activation energy via Flynn-Wall-Ozawa analysis and applying an Arrhenius-based equivalence. Tensile testing, dynamic mechanical analysis, and thermogravimetric analysis were combined to track embrittlement and crosslinking, and finite element simulations were benchmarked against experiments using an L2-norm metric. The outcome is a degradation map with a model-switching guideline. The Neo-Hookean model is preferred in the less-embrittled regime, whereas the five-parameter Mooney-Rivlin model is recommended as embrittlement progresses. This framework improves stress-prediction fidelity while keeping model complexity commensurate with the aging state, enabling faster and more reliable design of NBR seals for high-temperature automotive and renewable-energy applications.

摘要

用于汽车和能源设备的丁腈橡胶（NBR）密封件在高温下会发生明显的机械降解，然而超弹性模型之间切换的定量规则仍不明确。在此，通过Flynn-Wall-Ozawa分析估算活化能并应用基于阿伦尼乌斯的等效性，将加速热老化试验与使用条件联系起来。结合拉伸试验、动态力学分析和热重分析来跟踪脆化和交联情况，并使用L2范数指标将有限元模拟与实验进行对比。结果是得到了一张带有模型切换指南的降解图。在脆化程度较低的状态下，建议使用Neo-Hookean模型，而随着脆化的进展，推荐使用五参数Mooney-Rivlin模型。该框架提高了应力预测的准确性，同时使模型复杂性与老化状态相匹配，从而能够更快、更可靠地设计用于高温汽车和可再生能源应用的NBR密封件。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08c8/12431286/ea7f53dc83bc/polymers-17-02316-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08c8/12431286/5187da261dea/polymers-17-02316-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08c8/12431286/a858475e6b8b/polymers-17-02316-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08c8/12431286/7e0179f76b46/polymers-17-02316-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08c8/12431286/bef4546169ef/polymers-17-02316-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08c8/12431286/6e1b4d669721/polymers-17-02316-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08c8/12431286/935f3e63ca48/polymers-17-02316-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08c8/12431286/1eb4bb6831ab/polymers-17-02316-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08c8/12431286/ea7f53dc83bc/polymers-17-02316-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08c8/12431286/5187da261dea/polymers-17-02316-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08c8/12431286/a858475e6b8b/polymers-17-02316-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08c8/12431286/7e0179f76b46/polymers-17-02316-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08c8/12431286/bef4546169ef/polymers-17-02316-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08c8/12431286/6e1b4d669721/polymers-17-02316-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08c8/12431286/935f3e63ca48/polymers-17-02316-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08c8/12431286/1eb4bb6831ab/polymers-17-02316-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/08c8/12431286/ea7f53dc83bc/polymers-17-02316-g008.jpg

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本文引用的文献

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A Study on the Aging Mechanism and Anti-Aging Properties of Nitrile Butadiene Rubber: Experimental Characterization and Molecular Simulation.丁腈橡胶老化机理及抗老化性能研究：实验表征与分子模拟
Polymers (Basel). 2025 May 23;17(11):1446. doi: 10.3390/polym17111446.
2
Thermo-Oxidative Aging Effects on Hyperelastic Behavior of EPDM Rubber: A Constitutive Modeling Approach.热氧化老化对三元乙丙橡胶超弹性行为的影响：一种本构建模方法
Materials (Basel). 2025 May 12;18(10):2236. doi: 10.3390/ma18102236.
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Correlations between the Aging Behavior and Finite Element Method Simulation of Three Silicone Elastomers.
三种硅橡胶的老化行为与有限元法模拟之间的相关性
Materials (Basel). 2024 Aug 9;17(16):3961. doi: 10.3390/ma17163961.
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Healable and Recyclable Elastomers with Record-High Mechanical Robustness, Unprecedented Crack Tolerance, and Superhigh Elastic Restorability.具有创纪录高机械强度、前所未有的抗裂性和超高弹性恢复能力的可自愈且可回收的弹性体。
Adv Mater. 2021 Jul;33(27):e2101498. doi: 10.1002/adma.202101498. Epub 2021 Jun 1.
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