Degradation of silicone rubber analyzed by instrumental analyses and dielectric spectroscopy

Yoshimichi Ohki; Naoshi Hirai; Daomin Min; Liuqing Yang; Shengtao Li

doi:10.1007/978-3-030-04639-2_86

Degradation of silicone rubber analyzed by instrumental analyses and dielectric spectroscopy

Yoshimichi Ohki^*, Naoshi Hirai, Daomin Min, Liuqing Yang, Shengtao Li

^*Corresponding author for this work

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

1 Citation (Scopus)

Abstract

Silicone rubber (SiR) was gamma irradiated at 125, 145 and 185 °C or thermally aged at 220, 250 and 280 °C and the resultant changes in performance were evaluated. It has become clear from instrumental analyses that crosslinking via oxidation of silicon atoms and chain scission are induced by gamma rays. Furthermore, from the temperature dependence of real relative permittivity at high frequencies, the thermal expansion coefficient was found to become smaller with the increase in dose. These results can be understood well by the chemical and structural changes in SiR induced by the degradation.

Original language	English
Title of host publication	Minerals, Metals and Materials Series
Publisher	Springer International Publishing
Pages	1323-1332
Number of pages	10
ISBN (Print)	9783030046385, 9783030046392, 9783319515403, 9783319651354, 9783319728520, 9783319950211
DOIs	https://doi.org/10.1007/978-3-030-04639-2_86
Publication status	Published - 2019 Jan 1
Event	18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors 2019 - Boston, United States Duration: 2019 Aug 18 → 2019 Aug 22

Publication series

Name	Minerals, Metals and Materials Series
ISSN (Print)	2367-1181
ISSN (Electronic)	2367-1696

Conference

Conference	18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors 2019
Country/Territory	United States
City	Boston
Period	19/8/18 → 19/8/22

Keywords

Aging
Complex permittivity
Degradation
Gamma rays
High temperature
SiR

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Energy Engineering and Power Technology
Mechanics of Materials
Metals and Alloys
Materials Chemistry

Access to Document

10.1007/978-3-030-04639-2_86

Cite this

Degradation of silicone rubber analyzed by instrumental analyses and dielectric spectroscopy. / Ohki, Yoshimichi; Hirai, Naoshi; Min, Daomin et al.
Minerals, Metals and Materials Series. Springer International Publishing, 2019. p. 1323-1332 (Minerals, Metals and Materials Series).

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

Ohki, Y, Hirai, N, Min, D, Yang, L & Li, S 2019, Degradation of silicone rubber analyzed by instrumental analyses and dielectric spectroscopy. in Minerals, Metals and Materials Series. Minerals, Metals and Materials Series, Springer International Publishing, pp. 1323-1332, 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors 2019, Boston, United States, 19/8/18. https://doi.org/10.1007/978-3-030-04639-2_86

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title = "Degradation of silicone rubber analyzed by instrumental analyses and dielectric spectroscopy",

abstract = "Silicone rubber (SiR) was gamma irradiated at 125, 145 and 185 °C or thermally aged at 220, 250 and 280 °C and the resultant changes in performance were evaluated. It has become clear from instrumental analyses that crosslinking via oxidation of silicon atoms and chain scission are induced by gamma rays. Furthermore, from the temperature dependence of real relative permittivity at high frequencies, the thermal expansion coefficient was found to become smaller with the increase in dose. These results can be understood well by the chemical and structural changes in SiR induced by the degradation.",

keywords = "Aging, Complex permittivity, Degradation, Gamma rays, High temperature, SiR",

author = "Yoshimichi Ohki and Naoshi Hirai and Daomin Min and Liuqing Yang and Shengtao Li",

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doi = "10.1007/978-3-030-04639-2_86",

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T1 - Degradation of silicone rubber analyzed by instrumental analyses and dielectric spectroscopy

AU - Ohki, Yoshimichi

AU - Hirai, Naoshi

AU - Min, Daomin

AU - Yang, Liuqing

AU - Li, Shengtao

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Silicone rubber (SiR) was gamma irradiated at 125, 145 and 185 °C or thermally aged at 220, 250 and 280 °C and the resultant changes in performance were evaluated. It has become clear from instrumental analyses that crosslinking via oxidation of silicon atoms and chain scission are induced by gamma rays. Furthermore, from the temperature dependence of real relative permittivity at high frequencies, the thermal expansion coefficient was found to become smaller with the increase in dose. These results can be understood well by the chemical and structural changes in SiR induced by the degradation.

AB - Silicone rubber (SiR) was gamma irradiated at 125, 145 and 185 °C or thermally aged at 220, 250 and 280 °C and the resultant changes in performance were evaluated. It has become clear from instrumental analyses that crosslinking via oxidation of silicon atoms and chain scission are induced by gamma rays. Furthermore, from the temperature dependence of real relative permittivity at high frequencies, the thermal expansion coefficient was found to become smaller with the increase in dose. These results can be understood well by the chemical and structural changes in SiR induced by the degradation.

KW - Aging

KW - Complex permittivity

KW - Degradation

KW - Gamma rays

KW - High temperature

KW - SiR

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DO - 10.1007/978-3-030-04639-2_86

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SN - 9783030046392

SN - 9783319515403

SN - 9783319651354

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PB - Springer International Publishing

T2 - 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors 2019

Y2 - 18 August 2019 through 22 August 2019

ER -

Degradation of silicone rubber analyzed by instrumental analyses and dielectric spectroscopy

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

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