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High performance epoxy resins cured in the presence of BF 3 catalyst
Author(s) -
Munns Thomas E.,
Seferis James C.
Publication year - 1983
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1983.070280709
Subject(s) - epoxy , catalysis , glass transition , boron trifluoride , materials science , bisphenol a , ether , composite material , diglycidyl ether , boron , polymer chemistry , nuclear chemistry , chemistry , polymer , organic chemistry
Dynamic mechanical experiments have been conducted on an epoxy system made with tetraglycidyl 4,4′‐diaminodiphenyl methane (TGDDM) and polyglycidyl ether of Bisphenol A Novalac that were cured with 4,4′‐diaminodiphenyl sulfone (DDS) in the presence of Boron trifluoride monoethylamine catalyst (BF 3 :EtNH 2 ). As the concentration of BF 3 :EtNH 2 increased, the low temperature β‐transition magnitude increased slightly. The α 1 ‐transition observed in the uncatalyzed system decreased significantly with the addition of BF 3 :EtNH 2 catalyst. The α 2 or glass transition temperature of this system increased with increasing catalyst concentration. Both the catalyzed and uncatalyzed epoxy formulations studied in this work are important due to their similarity to systems used commercially in epoxy matrix composites.