热和辐射应力对弹性体性能的影响

IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1997-10-19 DOI:10.1109/CEIDP.1997.641099

R. Clavreul

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引用次数: 1

摘要

在法国，乙烯丙烯共聚物和硅树脂被用作核电厂电气材料的接头。为了确定弹性体在正常和意外条件下的使用寿命，我们研究了施加在这些材料上的热应力和辐射应力的影响。经过加速老化试验，机械性能，如断裂伸长率和抗拉强度使我们能够根据IEC 544-2评估材料的使用寿命。应用动力学模型估算了乙烯丙烯共聚物和有机硅在正常条件下的寿命预测，其中热老化常数取决于Arrhenius定律，辐射老化常数取决于剂量率。

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Effects of thermal and radiation stresses on elastomer properties

Ethylene Propylene Copolymer and Silicone are used as joints in electrical materials in nuclear power plants in France. In order to determine the elastomer service lifetime in normal and accidental conditions, we have studied the effects of thermal and radiation stresses applied to these materials. After accelerated aging tests, the mechanical properties such as elongation at break and tensile strength allowed us to appreciate the material service lifetime according to IEC 544-2. The lifetime prediction of Ethylene Propylene Copolymer and Silicone in normal conditions was estimated by applying a kinetic model where the constant depends on the Arrhenius law for thermal aging and the dose rate for radiation aging.

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IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena

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