橡胶拉伸和扭转热力学的实验研究

M. Mohsin, J. P. Berry, L. Treloar
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引用次数: 3

摘要

采用两种不同的技术测量了三种不同橡胶的应力应变特性,以评估在应变和温度范围内相对内能对总应力fe/f的贡献以及相应的Me/M值。设计了两种不同的实验技术;一种是在恒力作用下测量橡胶试样长度与温度的简单延伸,另一种是测量橡胶圆柱体中扭转偶M(在轴向上受到联合扭转和轴向上的延伸)随温度的变化。得到的天然橡胶和丁基橡胶的热弹性结果不包含任何令人惊讶的特征,并且发现与这些橡胶的其他报道的实验结果很好地一致。顺反式聚丁二烯橡胶的fe/f和Me/M值在两种工艺中表现出不同的趋势。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
An Experimental Study of the Thermodynamics of Rubber in Extension and Torsion
The stress-strain properties of three different rubbers have been measured using two different techniques, in order to evaluate the relative internal energy contribution to the total stress fe/f and the corresponding value of Me/M over a range of strain and temperatures. Two different experimental techniques have been designed; one is to allow measurement in simple extension of the length of a rubber sample in relation to the temperature at constant force, and the other is to measure the variation of torsional couple M in a cylinder of rubber (subjected to combined torsion about the axis and extension in the axial direction) with temperature. The thermoelastic results obtained for natural rubber and butyl rubber do not contain any surprising features, and are found to be in good agreement with other reported experimental results for these rubbers. Values of fe/f and Me/M obtained for cis-trans polybutadiene rubber show different trends between the two techniques.
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