HIGH-HUMIDITY DETERIORATION AND INTERNAL STRUCTURE CHANGE OF EPOXY-RESIN FOR ELECTRICAL INSULATION

被引：36

作者：

KUMAZAWA, T ^{[1
]}

OISHI, M ^{[1
]}

TODOKI, M ^{[1
]}

机构：

[1] TORAY RES CTR LTD, SHIGA, JAPAN

来源：

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 1994年 / 1卷 / 01期

关键词：

Atmospheric humidity - Electric insulation - Electric properties - Epoxy resins - Mechanical properties - Microscopic examination - Structure (composition) - Water absorption;

D O I：

10.1109/94.300240

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：

Mechanical and electrical properties of filled epoxy were evaluated by accelerated aging under high humidity and high temperature. Significant changes in these properties arose from the slight water absorption. The presence of internal and irreversible flaws such as microscopic damage probably associated with the elastic inhomogeneities were predicted by scanning laser acoustic microscope attenuation, and surface structure changes were found by mercury porosimetry during the accelerated aging. It is considered that such internal and/or surface flaws play an important role of the changes in various properties due to water absorption.

引用

页码：133 / 138

页数：6

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