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Relaxation of compressive stress in gamma-irradiated Viton™ fluoroelastomer
Fusion Engineering and Design ( IF 1.7 ) Pub Date : 2021-06-18 , DOI: 10.1016/j.fusengdes.2021.112714
William H. Gourdin , Wayne Jensen

We report our study of stress relaxation of Viton™ A hexafluoropropylene-vinylidene fluoride co-polymer fluoroelastomer compressed 25% and irradiated at room temperature in air to nominal absorbed doses of 10 – 10 Gy with 1.17 and 1.33 MeV gammas from a cobalt-60 source. Our data show that the true stresses at room temperature in ring samples of Viton™ A fluoroelastomer compressed 25% decline slightly from 1014±93 kPa at zero dose to 996±115 kPa at a dose of 10 Gy, decrease to 967±98 kPa at 10 Gy and then drop sharply to 640±116 kPa at 10 Gy and 157±32 kPa at 10 Gy. We briefly discuss the implications of this data for the integrity of seals in high-radiation environments.

中文翻译:

伽马辐照 Viton™ 氟橡胶中压应力的松弛

我们报告了 Viton™ 一种六氟丙烯-偏二氟乙烯共聚物含氟弹性体的应力松弛研究,该材料被压缩 25%,并在室温下在空气中用来自钴 60 源的 1.17 和 1.33 MeV 伽玛射线照射至 10 – 10 Gy 的标称吸收剂量。我们的数据显示,压缩 25% 的 Viton™ A 氟橡胶环样品在室温下的真实应力从零剂量时的 1014±93 kPa 略微下降至 10 Gy 剂量时的 996±115 kPa,在剂量为 10 Gy 时下降至 967±98 kPa。 10 Gy,然后急剧下降至 10 Gy 时的 640±116 kPa 和 10 Gy 时的 157±32 kPa。我们简要讨论该数据对高辐射环境中密封件完整性的影响。
更新日期:2021-06-18
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