TY - GEN
T1 - Effects of Heat and Radiation on the Terahertz Absorption in Silicone Rubber
AU - Kaneko, T.
AU - Hirai, N.
AU - Ohki, Y.
N1 - Funding Information:
This research was supported by the Nuclear Regulation Authority in Japan through Ageing Management Technical Evaluation Enhancement Program.
Publisher Copyright:
© 2018 IEEE.
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2018/9/19
Y1 - 2018/9/19
N2 - The effects of heat and radiation on the terahertz (THz) absorption spectra in silicone rubber (SiR) was examined. By conducting peak fitting, the THz absorption was found to be composed of several components at 1.2, 2.0, 4.1, 4.6, and 5.5 THz. By analyzing the changes of these components as a function of the ageing time, the 1.2-THz absorption seems to have a certain close relation with Si-CH-{mathbf {3}}textbf, while the 2.0-THz absorption is related with the formation of carbonyls. Furthermore, SiR seems to form mainly cross-linked structures if it is annealed thermally, whereas decomposition becomes dominant if it is gammairradiated at room temperature.
AB - The effects of heat and radiation on the terahertz (THz) absorption spectra in silicone rubber (SiR) was examined. By conducting peak fitting, the THz absorption was found to be composed of several components at 1.2, 2.0, 4.1, 4.6, and 5.5 THz. By analyzing the changes of these components as a function of the ageing time, the 1.2-THz absorption seems to have a certain close relation with Si-CH-{mathbf {3}}textbf, while the 2.0-THz absorption is related with the formation of carbonyls. Furthermore, SiR seems to form mainly cross-linked structures if it is annealed thermally, whereas decomposition becomes dominant if it is gammairradiated at room temperature.
KW - Carbonyl groups
KW - Crosslinking
KW - Decomposition
KW - Infrared absorption spectroscopy
KW - Inorganic polymer
KW - Nondestructive degradation diagnosis
KW - Spectroscopic analysis
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U2 - 10.1109/ICD.2018.8470044
DO - 10.1109/ICD.2018.8470044
M3 - Conference contribution
AN - SCOPUS:85055891670
T3 - 2018 IEEE 2nd International Conference on Dielectrics, ICD 2018
BT - 2018 IEEE 2nd International Conference on Dielectrics, ICD 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2nd IEEE International Conference on Dielectrics, ICD 2018
Y2 - 1 July 2018 through 5 July 2018
ER -