Dielectric Properties and Insulation Diagnosis of Polymers by Ultra-wideband Dielectric and Absorption Spectroscopy

超宽带介电光谱和吸收光谱研究聚合物的介电性能和绝缘诊断

• 批准号: 24656218
• 负责人: OHKI Yoshimichi
• 金额: $ 2.58万
• 依托单位: Waseda University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-24656218/
• 关键词: 誘電体; 高分子; 広帯域分光; テラヘルツ時間領域分光; 複素誘電率; 絶縁劣化; 状態監視

The objective of this research is the understanding of dielectric properties of polymer films through measurements of permittivity and absorption spectra in an ultrawide-band frequency range.In FY 2012, permittivity spectra were obtained for seven kinds of polymers by the free-space method at GHz frequencies for the purpose of getting useful information on the future ultrafast wideband communication system. The essentials of this research were submitted as a refereed paper. In FY 2013, absorption spectra induced in cross-linked polyethylene by gamma-ray assisted oxidation were analyzed experimentally and numerically using quantum chemical calculations. As a result, it can be clarified that the absorption is due to resonance vibrations induced by the phenomenon that optically inactive lattice vibrations become active through oxidation-induced structural changes. In addition, possibilities of detecting the degradation of ethylene-propylene rubber by THz imaging were also examined.

这项研究的目的是通过测量超级带频率范围内的介电常数和吸收光谱来理解聚合物膜的介电性能。在2012财年，通过GHz频率在自由空间方法中获得了七种聚合物的介电特性，以获取有关未来超级超级宽带通信的有用信息。这项研究的要点是作为裁定的纸。在2013财年，使用量子化学计算对通过伽马射线辅助氧化诱导的吸收光谱通过伽马射线辅助氧化进行了分析。结果，可以澄清的是，吸收是由于通过氧化引起的结构变化而引起的谐振振动引起的谐振振动引起的。另外，还检查了通过THZ成像检测乙烯橡胶降解的可能性。

项目成果

Measurements of THz absorption peaks in photo-degraded polyethylene and their assignment by quantum chemical calculations

• DOI: 10.1109/ceidp.2013.6747437
• 发表时间: 2013-12
• 期刊: 2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena
• 作者: M. Hosobuchi;M. Komatsu;X. Xie;Y. Cheng;Y. Furukawa;Y. Ohki;M. Mizuno;K. Fukunaga

わが国電力産業および関連分野におけるテラヘルツ波利用材料評価技術の現状

日本电力行业及相关领域太赫兹波材料评价技术现状

• 发表时间: 2013
• 期刊: 化学工業
• 作者: Y. Kinoshita;Y. Tojo;R. Matsumura;T. Sadoh;T. Nishimura;and M. Miyao;大木義路
• 通讯作者: 大木義路

テラヘルツ分光とイメージングの放電・絶縁分野への応用

太赫兹光谱和成像在放电和绝缘领域的应用

• 作者: Masashi Hosobuchi;Marina Komatsu;Xiaojun Xie;Yonghong Cheng;Yukio Furukawa;Yoshimichi Ohki;Maya Mizuno;and Kaori Fukunaga;Peng Yang and Yoshimichi Ohki;小松麻理奈，井筒智之，大木義路，水野麻弥，福永香;大木義路;Yoshimichi Ohki;Yoshimichi Ohki;Yoshimichi Ohki;大木義路
• 通讯作者: 大木義路

Experimental Study on the Dielectric Behavior of a Liquid Crystal Polymer

液晶聚合物介电行为的实验研究

• 发表时间: 2013
• 作者: Masashi Hosobuchi;Marina Komatsu;Xiaojun Xie;Yonghong Cheng;Yukio Furukawa;Yoshimichi Ohki;Maya Mizuno;and Kaori Fukunaga;Peng Yang and Yoshimichi Ohki
• 通讯作者: Peng Yang and Yoshimichi Ohki

Dielectric Behavior of a Liquid Crystal Polymer

液晶聚合物的介电行为

• 发表时间: 2014
• 作者: Peng Yang;Yoshimichi Ohki
• 通讯作者: Yoshimichi Ohki