THz Spectroscopic Study of Degradation of Epoxy Resins

Yoshimichi Ohki; Hiroyuki Ishii; Mayu Hayashi; Naoshi Hirai

doi:10.1109/ICEMPE51623.2021.9509210

THz Spectroscopic Study of Degradation of Epoxy Resins

Yoshimichi Ohki, Hiroyuki Ishii, Mayu Hayashi, Naoshi Hirai

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

4 Citations (Scopus)

Abstract

Two kinds of epoxy resins, HE and SE, were prepared. The resin SE is soft, while HE is hard. After they were heated at 90 °C or higher or irradiated with gamma rays for various periods, their absorption spectra were measured in a frequency range from 0.5 to 5.0 THz. As a result, it has become clear that the intensity of the THz absorption in SE correlates well with the intensity of its mid-infrared (mIR) absorption due to the formation of carbonyl groups. In contrast, HE shows no appreciable changes in both THz and mIR absorption spectra. The above THz absorption can be an oxidation index of epoxy resin.

Original language	English
Title of host publication	ICEMPE 2021 - 3rd International Conference on Electrical Materials and Power Equipment
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781665418409
DOIs	https://doi.org/10.1109/ICEMPE51623.2021.9509210
Publication status	Published - 2021 Apr 11
Event	3rd International Conference on Electrical Materials and Power Equipment, ICEMPE 2021 - Chongqing, China Duration: 2021 Apr 11 → 2021 Apr 15

Publication series

Name	ICEMPE 2021 - 3rd International Conference on Electrical Materials and Power Equipment

Conference

Conference	3rd International Conference on Electrical Materials and Power Equipment, ICEMPE 2021
Country/Territory	China
City	Chongqing
Period	21/4/11 → 21/4/15

Keywords

aging
insulating polymer
optical absorption
oxidation

ASJC Scopus subject areas

Energy Engineering and Power Technology
Electrical and Electronic Engineering
Safety, Risk, Reliability and Quality
Electronic, Optical and Magnetic Materials
Polymers and Plastics

Access to Document

10.1109/ICEMPE51623.2021.9509210

Cite this

Ohki, Y., Ishii, H., Hayashi, M., & Hirai, N. (2021). THz Spectroscopic Study of Degradation of Epoxy Resins. In ICEMPE 2021 - 3rd International Conference on Electrical Materials and Power Equipment Article 9509210 (ICEMPE 2021 - 3rd International Conference on Electrical Materials and Power Equipment). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICEMPE51623.2021.9509210

THz Spectroscopic Study of Degradation of Epoxy Resins. / Ohki, Yoshimichi ; Ishii, Hiroyuki; Hayashi, Mayu et al.
ICEMPE 2021 - 3rd International Conference on Electrical Materials and Power Equipment. Institute of Electrical and Electronics Engineers Inc., 2021. 9509210 (ICEMPE 2021 - 3rd International Conference on Electrical Materials and Power Equipment).

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

Ohki, Y , Ishii, H, Hayashi, M & Hirai, N 2021, THz Spectroscopic Study of Degradation of Epoxy Resins. in ICEMPE 2021 - 3rd International Conference on Electrical Materials and Power Equipment., 9509210, ICEMPE 2021 - 3rd International Conference on Electrical Materials and Power Equipment, Institute of Electrical and Electronics Engineers Inc., 3rd International Conference on Electrical Materials and Power Equipment, ICEMPE 2021, Chongqing, China, 21/4/11. https://doi.org/10.1109/ICEMPE51623.2021.9509210

Ohki Y , Ishii H, Hayashi M, Hirai N. THz Spectroscopic Study of Degradation of Epoxy Resins. In ICEMPE 2021 - 3rd International Conference on Electrical Materials and Power Equipment. Institute of Electrical and Electronics Engineers Inc. 2021. 9509210. (ICEMPE 2021 - 3rd International Conference on Electrical Materials and Power Equipment). doi: 10.1109/ICEMPE51623.2021.9509210

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title = "THz Spectroscopic Study of Degradation of Epoxy Resins",

abstract = "Two kinds of epoxy resins, HE and SE, were prepared. The resin SE is soft, while HE is hard. After they were heated at 90 °C or higher or irradiated with gamma rays for various periods, their absorption spectra were measured in a frequency range from 0.5 to 5.0 THz. As a result, it has become clear that the intensity of the THz absorption in SE correlates well with the intensity of its mid-infrared (mIR) absorption due to the formation of carbonyl groups. In contrast, HE shows no appreciable changes in both THz and mIR absorption spectra. The above THz absorption can be an oxidation index of epoxy resin.",

keywords = "aging, insulating polymer, optical absorption, oxidation",

author = "Yoshimichi Ohki and Hiroyuki Ishii and Mayu Hayashi and Naoshi Hirai",

note = "Publisher Copyright: {\textcopyright} 2021 IEEE.; 3rd International Conference on Electrical Materials and Power Equipment, ICEMPE 2021 ; Conference date: 11-04-2021 Through 15-04-2021",

year = "2021",

month = apr,

day = "11",

doi = "10.1109/ICEMPE51623.2021.9509210",

language = "English",

series = "ICEMPE 2021 - 3rd International Conference on Electrical Materials and Power Equipment",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

booktitle = "ICEMPE 2021 - 3rd International Conference on Electrical Materials and Power Equipment",

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TY - GEN

T1 - THz Spectroscopic Study of Degradation of Epoxy Resins

AU - Ohki, Yoshimichi

AU - Ishii, Hiroyuki

AU - Hayashi, Mayu

AU - Hirai, Naoshi

PY - 2021/4/11

Y1 - 2021/4/11

N2 - Two kinds of epoxy resins, HE and SE, were prepared. The resin SE is soft, while HE is hard. After they were heated at 90 °C or higher or irradiated with gamma rays for various periods, their absorption spectra were measured in a frequency range from 0.5 to 5.0 THz. As a result, it has become clear that the intensity of the THz absorption in SE correlates well with the intensity of its mid-infrared (mIR) absorption due to the formation of carbonyl groups. In contrast, HE shows no appreciable changes in both THz and mIR absorption spectra. The above THz absorption can be an oxidation index of epoxy resin.

AB - Two kinds of epoxy resins, HE and SE, were prepared. The resin SE is soft, while HE is hard. After they were heated at 90 °C or higher or irradiated with gamma rays for various periods, their absorption spectra were measured in a frequency range from 0.5 to 5.0 THz. As a result, it has become clear that the intensity of the THz absorption in SE correlates well with the intensity of its mid-infrared (mIR) absorption due to the formation of carbonyl groups. In contrast, HE shows no appreciable changes in both THz and mIR absorption spectra. The above THz absorption can be an oxidation index of epoxy resin.

KW - aging

KW - insulating polymer

KW - optical absorption

KW - oxidation

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BT - ICEMPE 2021 - 3rd International Conference on Electrical Materials and Power Equipment

PB - Institute of Electrical and Electronics Engineers Inc.

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Y2 - 11 April 2021 through 15 April 2021

ER -

THz Spectroscopic Study of Degradation of Epoxy Resins

Abstract

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Keywords

ASJC Scopus subject areas

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