工业用有机硅橡胶老化寿命预测评估OACSTPCD

In this paper,thermal aging tests of silicone rubber at different temperatures were designed by using hot oven method.The long-term test data of tensile modulus,tensile strength and elongation at break before and after aging were obtained.The life of silicone rubber was predicted and evaluated by Arrhenius empirical formula.The results of test data show that the service life of silicone rubber is 11.5 years for the tensile strength at room temperature,and 14.8 years for the elongation at break.All things considered,it is more reasonable to select tensile strength as the indicator for the prediction of heat aging life of silicone rubber.