Mitigation of Degradation in Polymers by Gamma Rays

Yoshimichi Ohki; Yu Miyazaki; Haolong Zhou; Momoka Sumita; Takumi Someya; Naoshi Hirai

doi:10.1109/ICPADM49635.2021.9493858

Mitigation of Degradation in Polymers by Gamma Rays

Yoshimichi Ohki, Yu Miyazaki, Haolong Zhou, Momoka Sumita, Takumi Someya, Naoshi Hirai

Kagami Memorial Research Institute for Materials Science and Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Citations (Scopus)

Abstract

In nuclear power plants, polymers used for electrical insulation are irradiated by radioactive rays, depending on the places where they are installed. If an accident occurs, such polymers may also suffer high-temperature steam exposure. We have conducted several experiments that aim at clarifying the effects of thermal stresses, gamma-ray irradiation, and steam exposure on various insulating polymers and have found that gamma-ray irradiation can mitigate the degradation induced by the steam exposure in several polymers.

Original language	English
Title of host publication	13th International Conference on the Properties and Applications of Dielectric Materials
Subtitle of host publication	Emerging Dielectrics for Energy Sustainability, ICPADM 2021
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	89-92
Number of pages	4
ISBN (Electronic)	9781728182384
DOIs	https://doi.org/10.1109/ICPADM49635.2021.9493858
Publication status	Published - 2021 Jul 12
Event	13th IEEE International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2021 - Virtual, Online Duration: 2021 Jul 12 → 2021 Jul 14

Publication series

Name	Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials
Volume	2021-July

Conference

Conference	13th IEEE International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2021
City	Virtual, Online
Period	21/7/12 → 21/7/14

Keywords

aging
gamma rays
polymer
silicone rubber
steam exposure

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Materials Chemistry

Access to Document

10.1109/ICPADM49635.2021.9493858

Cite this

Ohki, Y., Miyazaki, Y., Zhou, H., Sumita, M., Someya, T., & Hirai, N. (2021). Mitigation of Degradation in Polymers by Gamma Rays. In 13th International Conference on the Properties and Applications of Dielectric Materials: Emerging Dielectrics for Energy Sustainability, ICPADM 2021 (pp. 89-92). Article 9493858 (Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials; Vol. 2021-July). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICPADM49635.2021.9493858

Mitigation of Degradation in Polymers by Gamma Rays. / Ohki, Yoshimichi; Miyazaki, Yu; Zhou, Haolong et al.
13th International Conference on the Properties and Applications of Dielectric Materials: Emerging Dielectrics for Energy Sustainability, ICPADM 2021. Institute of Electrical and Electronics Engineers Inc., 2021. p. 89-92 9493858 (Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials; Vol. 2021-July).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Ohki, Y, Miyazaki, Y, Zhou, H, Sumita, M, Someya, T & Hirai, N 2021, Mitigation of Degradation in Polymers by Gamma Rays. in 13th International Conference on the Properties and Applications of Dielectric Materials: Emerging Dielectrics for Energy Sustainability, ICPADM 2021., 9493858, Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials, vol. 2021-July, Institute of Electrical and Electronics Engineers Inc., pp. 89-92, 13th IEEE International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2021, Virtual, Online, 21/7/12. https://doi.org/10.1109/ICPADM49635.2021.9493858

Ohki Y, Miyazaki Y, Zhou H, Sumita M, Someya T, Hirai N. Mitigation of Degradation in Polymers by Gamma Rays. In 13th International Conference on the Properties and Applications of Dielectric Materials: Emerging Dielectrics for Energy Sustainability, ICPADM 2021. Institute of Electrical and Electronics Engineers Inc. 2021. p. 89-92. 9493858. (Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials). doi: 10.1109/ICPADM49635.2021.9493858

Ohki, Yoshimichi ; Miyazaki, Yu ; Zhou, Haolong et al. / Mitigation of Degradation in Polymers by Gamma Rays. 13th International Conference on the Properties and Applications of Dielectric Materials: Emerging Dielectrics for Energy Sustainability, ICPADM 2021. Institute of Electrical and Electronics Engineers Inc., 2021. pp. 89-92 (Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials).

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AB - In nuclear power plants, polymers used for electrical insulation are irradiated by radioactive rays, depending on the places where they are installed. If an accident occurs, such polymers may also suffer high-temperature steam exposure. We have conducted several experiments that aim at clarifying the effects of thermal stresses, gamma-ray irradiation, and steam exposure on various insulating polymers and have found that gamma-ray irradiation can mitigate the degradation induced by the steam exposure in several polymers.

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Mitigation of Degradation in Polymers by Gamma Rays

Abstract

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Keywords

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