During the operation of nuclear power plants,the aging condition of ethylene-propylene-diene monomer (EPDM) cable materials should be monitored and evaluated.The types and production of radiolysis gas of EPDM cable after radiation irradiation were studied by gas mass spectrometry.The aging condition of the cables was evaluated by tracking the small molecule products produced after irradiation.Its performance was characterized by elongation at break test,infrared test,thermos gravimetric test and DSC test.The aging of the cable materials was monitored and evaluated,and predicted the development trend of the detection technology.
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