Study of mechanical behavior and constitutive relation of carbon nanotube reinforced fluororubber at high temperature
Modified fluororubber is widely used in automobile engineering,aerospace engineering,national defense and other fields because of its excellent oil resistance,high temperature resistance and other good physical properties.In this paper,the uniaxial tensile test data of carbon nanotube-reinforced fluororubber at different temperatures(120 ℃～220 ℃)are analyzed,and the characteristics of the mechanical behavior of modified fluororubber with temperature are obtained.Through constitutive model evaluation and material parameter fitting,a temperature-dependent constitutive equation suitable for modified fluororubber is derived.Finally,the test results of the uniaxial tensile test at a specific temperature are compared with the prediction results of the model,which proves that the improved Yeoh model can describe the mechanical properties of carbon nanotube-reinforced fluororubber during the test temperature range.The conclusions provide the theoretical basis for engineering applications of modified fluororubber at high temperature.
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维普
