Abstract:
The aging properties of the nitrile butadiene rubber materials for spacecraft are studied by the hydrothermal accelerated aging test method. By combining the Arrhenius model and the Eyring model, the hydrothermal aging life prediction model of the nitrile butadiene rubber for spacecraft is established, and the storage life of the nitrile butadiene rubber is predicted by using this model. It is shown that the temperature and the humidity have a great influence on the mechanical properties of the nitrile butadiene rubber in the process of the hygrothermal aging test, where the higher temperature and humidity will lead to higher aging reaction rate of the nitrile butadiene rubber. With the tensile strength as the performance evaluation index, the storage life of the nitrile butadiene rubber under the environmental condition of 20 ℃ and 60%RH is calculated to be 5.71 year.
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