Effect of long-term hydrogen exposure on the mechanical properties of polymers used for pipes and tested in pressurized hydrogen
作者： Sylvie Castagnet , Jean-Claude Grandidier , Mathieu Comyn , Guillaume Benoît
DOI: 10.1016/J.IJPVP.2011.11.008
关键词:
摘要: Abstract The influence of long-term exposure to hydrogen on the mechanical properties polymers needs be characterized for a reliable design storage or transport facilities. However, tests in atmosphere have been rarely reported. In present study, two possible effects tensile investigated currently used gas i.e. polyethylene (PE) and polyamide 11 (PA11): mechanics-diffusion coupling hydrogen. Tensile (30 bars) atmospheric air at room temperature were compared, as-received materials as well after aging various conditions (pressure, duration). Results showed that was prevalent neither behavior nor microstructure changes. This suggested hydrogen-dedicated parts could based data obtained air, even use.
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