Effects of Tritium Gas Exposure on the Dynamic Mechanical Properties of EPDM Elastomer

Samples of ethylene propylene diene monomer (EPDM) elastomer were exposed to tritium gas in closed containers at 101 kPa (1 atmosphere) pressure and ambient temperature for about one week. Tritium exposure effects on the samples were characterized by dynamic mechanical analysis (DMA) and radiolysis...

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Bibliographic Details
Published in:Fusion science and technology 2008-08, Vol.54 (2), p.576-579
Main Authors: Clark, Elliot A., Staack, Gregory C.
Format: Article
Language:English
Subjects:
AMBIENT TEMPERATURE
CONTAINERS
ETHYLENE
GASES
GLASS
IMPURITIES
MATERIALS SCIENCE
MECHANICAL PROPERTIES
MONOMERS
PLASTICS
PROPYLENE
RADIOLYSIS
TRANSITION TEMPERATURE
TRITIUM
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Summary:Samples of ethylene propylene diene monomer (EPDM) elastomer were exposed to tritium gas in closed containers at 101 kPa (1 atmosphere) pressure and ambient temperature for about one week. Tritium exposure effects on the samples were characterized by dynamic mechanical analysis (DMA) and radiolysis products were characterized by measuring the total final pressure and composition in the exposure containers at the end of exposure period. There was no effect of one week tritium exposure on the glass transition temperature, Tg, of the samples tested. Impurity gases produced in the closed containers included HT and lesser amounts of H 2 , DTO, and CT 4 . The total pressure remained the same during exposure.
ISSN:1536-1055
1943-7641
DOI:10.13182/FST08-A1881