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温度对加速老化三元乙丙橡胶超弹性力学行为的影响

Influence of Temperature on Hyperelastic Mechanical Behavior of Accelerated Aged EPDM Rubber.

作者信息

Xie Zhaonan, Jia Dong, Huang Xicheng, Zhang Kai, Yan Shunping, Chen Junhong, Li Jiaxing, Zhong Weizhou

机构信息

Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621999, China.

Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province, Mianyang 621999, China.

出版信息

Polymers (Basel). 2025 Jun 11;17(12):1626. doi: 10.3390/polym17121626.

DOI:10.3390/polym17121626
PMID:40574154
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12196644/
Abstract

EPDM (Ethylene Propylene Diene Monomer) rubber is a crucial engineering material, and its mechanical behavior changes with aging duration and ambient temperature. The effects of temperature on the hyperelastic behavior of unaged and aged EPDM rubber are investigated by conducting accelerated aging tests under constant compression and uniaxial compression tests at different temperatures. The experimental results show that prolonged aging induces EPDM rubber to exhibit an approximately linear hardening trend under a constant temperature. For aged EPDM rubber, its stiffness initially decreases and then increases with test temperature. The stress hardening factor was introduced to characterize the influence of the test temperature on the aging effect. The factor exhibits a decreasing trend and then an increasing trend with respect to compression test temperature. The curve of the stress hardening factor versus temperature is approximately a quadratic function. To fit the results, a Neo-Hooke model, a Mooney-Rivlin model, and an improved Mooney-Rivlin model were tested for their fit with the EPDM rubber compression data, covering different experimental conditions. The improved Mooney-Rivlin model had the most consistent results with the experimental data. Based on the experimental results, the parameters of the improved Mooney-Rivlin model were extended to model the effects of temperature and aging time. The proposed constitutive model can effectively describe the hyperelastic behavior of aged EPDM rubber tested at different temperatures.

摘要

三元乙丙橡胶（EPDM）是一种关键的工程材料，其力学性能会随老化时间和环境温度而变化。通过在恒定压缩条件下进行加速老化试验以及在不同温度下进行单轴压缩试验，研究了温度对未老化和老化EPDM橡胶超弹性行为的影响。实验结果表明，长时间老化会使EPDM橡胶在恒定温度下呈现出近似线性的硬化趋势。对于老化的EPDM橡胶，其刚度最初随试验温度降低，然后升高。引入应力硬化因子来表征试验温度对老化效果的影响。该因子相对于压缩试验温度呈现出先降低后升高的趋势。应力硬化因子与温度的曲线近似为二次函数。为了拟合结果，对Neo-Hooke模型、Mooney-Rivlin模型和改进的Mooney-Rivlin模型进行了测试，以检验它们对涵盖不同实验条件的EPDM橡胶压缩数据的拟合情况。改进的Mooney-Rivlin模型与实验数据的结果最为一致。基于实验结果，扩展了改进的Mooney-Rivlin模型的参数，以模拟温度和老化时间的影响。所提出的本构模型能够有效地描述在不同温度下测试的老化EPDM橡胶的超弹性行为。

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本文引用的文献

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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
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Constitutive Model for Thermal-Oxygen-Aged EPDM Rubber Based on the Arrhenius Law.基于阿累尼乌斯定律的热氧老化三元乙丙橡胶本构模型
Polymers (Basel). 2024 Sep 14;16(18):2608. doi: 10.3390/polym16182608.
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Rate-Dependent Tensile Properties of Aluminum-Hydroxide-Enhanced Ethylene Propylene Diene Monomer Coatings for Solid Rocket Motors.
用于固体火箭发动机的氢氧化铝增强三元乙丙橡胶涂层的速率依赖性拉伸性能
Materials (Basel). 2024 Aug 1;17(15):3790. doi: 10.3390/ma17153790.
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Thermal Oxidative Aging and Service Life Prediction of Commercial Ethylene-Propylene-Diene Monomer Spacer Damping Composites for High-Voltage Transmission Lines.高压输电线路用商用三元乙丙橡胶间隔阻尼复合材料的热氧化老化及使用寿命预测
Polymers (Basel). 2024 Apr 24;16(9):1186. doi: 10.3390/polym16091186.
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Evidence for non-Arrhenius behavior of EPDM rubber by combining Arrhenius and time-temperature superposition (TTS) extrapolations.通过结合阿伦尼乌斯和时间-温度叠加（TTS）外推法证明三元乙丙橡胶的非阿伦尼乌斯行为。
RSC Adv. 2024 Feb 9;14(8):5216-5221. doi: 10.1039/d3ra07159f. eCollection 2024 Feb 7.
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A Leakage Prediction Model for Sealing Performance Assessment of EPDM O-Rings under Irradiation Conditions.一种用于评估辐照条件下三元乙丙橡胶O形环密封性能的泄漏预测模型。
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