The article takes the O-ring in the sealing structure of a certain type of underwater launch power device as the research object,studies its performance degradation law,and accurately predicts and evaluates its service life.Thermal oxidative aging tests are conducted on new products and old products that have been aged for 11 years under constant temperature stress.Based on the Arrhenius model and experimental data,an aging kinetics equation for the degree and time of seal ring aging is established,and the relationship between environmental temperature and aging reaction rate is established.Under the premise of using an ambient temperature of 25℃,the service life of the new product is about 13.7 years,and the service life of the old product that has been aged for 11 years is about 3.0 years,the actual service life of the old product is about 14.0 years.The results indicate that the experimental data is in good agreement with the actual results,and the actual service life of the sealing ring is around 14 years,providing a reference basis for the use and maintenance of the equipment.
关键词
O型密封圈/贮存寿命/热氧老化/加速退化试验
Key words
O-ring seal/storage life/thermal oxygen aging/accelerated degradation test
维普
万方数据