Applicability of Positron Annihilation Spectroscopy to Evaluation of Polymer Materials

被引：0
|
作者：
Kurihara, T. [1 ]
Takahashi, T. [1 ]
Homma, H. [1 ]
Okamoto, T. [1 ]
Dohi, K. [2 ]
机构：
[1] Cent Res Inst Elect Power Ind, Elect Power Engn Res Lab, 2-6-1 Nagasaka, Yokosuka, Kanagawa 2400196, Japan
[2] Cent Res Inst Elect Power Ind, Mat Sci Res Lab, Tokyo 201, Japan
来源：
PROCEEDINGS OF THE 2010 IEEE INTERNATIONAL CONFERENCE ON SOLID DIELECTRICS (ICSD 2010) | 2010年
关键词：
polymer materials; free volume; positron annihilation; material characteristics; insulation degradation;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Free volumes of six types of polyethylene with different densities and one type of cross-linked polyethylene were evaluated by the positron annihilation technique, and relationships between free volumes and material characteristics such as material density and mechanical characteristics were investigated. As a result, it was found that the estimated free volume radius and its number density decreased with an increase in the material density, and the free volume radius was estimated to be about 0.3nm. We proposed a parameter related to both the volume and number density of free volumes and referred to it as the relative free volume. The relative free volume decreased with an increase in the material density and increased with a decrease in the yield and tensile strength.
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页数：4
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