BETA-RELAXATION IN EPOXY RESINS - TEMPERATURE AND TIME-DEPENDENCE OF CURE

被引：15

作者：

POGANY, GA

机构：

[1] Carrington Plastics Laboratory, 'Shell' Research Limited, Urmston, Manchester

来源：

JOURNAL OF MATERIALS SCIENCE | 1969年 / 4卷 / 05期

关键词：

D O I：

10.1007/BF00549705

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Internal friction and creep measurements have been used to reveal the mechanism of cure in epoxy resins cross-linked with diethylene triamine (DETA). The β-relaxation is associated with the main glass transition of the undercured resin network. The glass transition temperature (Tg) is about 40° C above the maximum temperature of cure and the curing reaction slows down about 2 h after each increase of the temperature. At 25° C the cure is only about half complete and since in this resin, when fully cross-linked, Tg is at about 140° C, temperatures of 100° C or over are needed to complete cure. © 1969 Chapman and Hall.

引用

页码：405 / &

共 15 条

[1]

BATZER H, 1964, KAUTSCHUK GUMMI KUNS, V17, P563

[2]

DEMMLER K, 1959, KUNSTSTOFFE, V55, P929

[3]

FLORY PJ, 1953, PRINCIPLES POLYMER C

[4] DIELECTRIC PROPERTIES OF AN EPOXY RESIN DURING POLYMERIZATION [J].