EFFECT OF THERMAL EXPANSION ON THERMALLY STIMULATED CURRENTS IN POLYMERS - I: ELASTOMERIC MATERIALS.

被引：0

作者：

Vanderschueren, J. ^{[1
]}

Ladang, M. ^{[1
]}

Niezette, J. ^{[1
]}

Corapci, M. ^{[1
]}

机构：

[1] Univ of Liege, Belg, Univ of Liege, Belg

来源：

IEEE transactions on electrical insulation | 1987年 / EI-22卷 / 01期

关键词：

ELECTRIC INSULATING MATERIALS - Mathematical Models - STYRENE;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Model calculations of thermally stimulated polarization currents (TSPC) based on the bistable model of Froehlich show that the current reversals observed in the glass transition range of polymeric materials result not only from the temperature dependence of equilibrium polarization but also from thermal expansion. The contribution of thermal expansion is especially sufficient in elastomers which are characterized by expansion coefficients that differ markedly above and below the glass transition temperature. A good qualitative and quantitative agreement with all theoretical predictions has been found in styrene-isoprene-styrene block copolymers.

引用

页码：19 / 22