临氢环境橡胶密封材料氢浓度特性研究进展OA

Rubber materials are widely used in high-pressure hydrogen sealing components,which play a crucial role in the field of hydrogen energy storage and transportation.However,the high-pressure hydrogen atmosphere can contribute to the dissolution of hydrogen into the interior of rubber materials,exacerbating the deterioration of the material properties and ultimately leading to seal failure.Hydrogen concentration is one of the key indicators for evaluating the hydrogen solubility of rubber sealing materials,and the study of the hydrogen concentration characteristics of rubber sealing materials under high-pressure hydrogen atmosphere can provide a theoretical basis for preventing and controlling the hydrogen-induced seal failure of rubber.Rubber sealing materials for high-pressure hydrogen atmosphere are focused on,firstly,the existence state of hydrogen in rubber sealing materials is discussed,then the test procedure,theoretical calculation process and the current status of three common hydrogen concentration tests of rubber sealing material are introduced,the advantages and shortcomings of these three tests are summarized,and finally the effect of specimen size,hydrogen pressure,filler type and rubber type on the hydrogen concentration of rubber sealing materials are discussed.Based on the above analysis,several suggestions are put forward for the research on the hydrogen concentration characteristics of rubber sealing materials,including expanding the research on the influencing factors of hydrogen concentration of rubber sealing materials,constructing a database of hydrogen concentration of typical rubber sealing materials,and building an in-situ testing system for hydrogen concentration of rubber sealing materials under high-pressure hydrogen atmosphere.