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Relaxations of bisphenol A-based epoxides cured with aliphatic diamines

✍ Scribed by Mami Matsukawa; Hirotaka Okabe; Kazumi Matsushige

Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
563 KB
Volume
50
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

The main α and sub β relaxations in bisphenol A‐based epoxides cured by two kinds of aliphatic diamines were examined in wide temperature and frequency ranges by using middle‐frequency dynamic, dielectric, and ultrasonic measuring systems. The obtained temperature–frequency correlation maps revealed an Arrhenius‐type behavior for the β relaxation with apparent activation energy of 16 kcal/mol. For the α relaxation, the maps were in good agreement with the W.L.F. equation. Owing to the similarity of structure in these resins, both maps showed the same tendencies. © 1993 John Wiley & Sons, Inc.

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