A comparison of viscoelastic behavior of engineering elastomers under different stress and temperature

IF 1.2 4区物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY

Revista Mexicana De Fisica Pub Date : 2023-05-01 DOI:10.31349/revmexfis.69.031005

Jocelyn Arlet Juárez Hernández, J. A. Sotomayor-del-Moral, O. Susarrey-Huerta, L. Farfán-Cabrera, J. B. Pascual-Francisco

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Abstract

In this work, a comparison of the viscoelastic creep behavior of five engineering elastomers (Ethylene-Propylene-Diene Monomer, Flouroelastomer, nitrile butadiene rubber, silicon rubber and neoprene/chloroprene rubber) is presented. Creep tests at different stress levels and temperatures were conducted using a “home-built” creep test device. A commercial equipment of Digital Image Correlation technique was implemented for the measurement of the time-dependent strains. The linear viscoelastic behavior regimes were determined by evaluating the creep compliance for each stress and temperature condition. Then, the creep curves obtained were fitted to a characteristic creep model, enabling the calculation of the viscoelastic parameters of each material. It was observed that the tested elastomers exhibited different elastic and viscous parameters, which were found to decrease with temperature. Particularly, it was observed that silicon rubber showed large instantaneous (elastic) strain and a small viscous deformation, whereas the Flouroelastomer rubber exhibited moderate strain curves, even at very high temperatures (100 °C and 120 °C), showing the highest creep resistance and the wider regime of linear viscoelastic behavior.

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工程弹性体在不同应力和温度下的粘弹性行为比较

本文比较了五种工程弹性体（乙烯-丙烯-二烯单体、弗洛弹性体、丁腈橡胶、硅橡胶和氯丁橡胶/氯丁二烯橡胶）的粘弹性蠕变行为。使用“自制”蠕变试验装置在不同应力水平和温度下进行蠕变试验。利用数字图像相关技术的商用设备测量了随时间变化的应变。通过评估每种应力和温度条件下的蠕变柔度来确定线性粘弹性行为状态。然后，将获得的蠕变曲线拟合到特征蠕变模型中，从而能够计算每种材料的粘弹性参数。观察到，测试的弹性体表现出不同的弹性和粘性参数，发现这些参数随着温度的升高而降低。特别是，观察到硅橡胶表现出大的瞬时（弹性）应变和小的粘性变形，而Flouroelastic橡胶即使在非常高的温度（100°C和120°C）下也表现出中等的应变曲线，表现出最高的蠕变阻力和更宽的线性粘弹性行为范围。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Revista Mexicana De Fisica 物理-物理：综合

CiteScore

2.20

自引率

11.80%

发文量

审稿时长

4-8 weeks

期刊介绍： Durante los últimos años, los responsables de la Revista Mexicana de Física, la Revista Mexicana de Física E y la Revista Mexicana de Física S, hemos realizado esfuerzos para fortalecer la presencia de estas publicaciones en nuestra página Web ( http://rmf.smf.mx).