半晶电缆绝缘热辐射老化过程中的逆温度效应研究

2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2022-10-30 DOI:10.1109/CEIDP55452.2022.9985318

Y. Ni, A. Sriraman, Donghui Li, Ikumi Ellis, L. Fifield

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引用次数: 1

摘要

研究了热辐照复合老化对半结晶聚合物的反温度效应(ITE)。在ITE的情况下，在较低温度下老化的材料的机械耐久性随剂量的降低比在较高温度下更快。本文研究了两个交联聚乙烯(XLPE)和两个乙烯丙烯橡胶(EPR)型核电缆绝缘层在3种温度下(26 ^{\circ}\text{C}、50 ^{\circ}\text{C}、90 ^{\circ}\text{C})经受100 Gy/h至30 Mrad的热辐射老化。分析其老化后的质量变化和颜色变化，以判断有无ITE。

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Investigation of Inverse Temperature Effects During Thermal-Radiation Aging of Semicrystalline Cable Insulation

Inverse temperature effects (ITE) were observed for semi-crystalline polymers subjected to combined thermal and irradiation aging. In the case of ITE, the mechanical durability of materials aged at lower temperatures degrades with dose faster than at higher temperatures. In this paper, two crosslinked polyethylene (XLPE) and two ethylene-propylene rubber (EPR) type nuclear cable insulations were exposed to thermal-radiation aging at 100 Gy/h up to 30 Mrad and at three temperatures $(26 ^{\circ}\text{C}, 50 ^{\circ}\text{C}, 90 ^{\circ}\text{C})$. Their mass change and color change after aging were analyzed for indication of ITE.

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2022 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)

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