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Buildup of thermoset and crystallization of thermoplastics studied by electrical techniques
Author(s) -
Friedrich K.,
VinhTung C.,
Boiteux G.,
Seytre G.,
Ulañski J.
Publication year - 1997
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/(sici)1097-4628(19970919)65:12<2529::aid-app23>3.0.co;2-u
Subject(s) - thermosetting polymer , curing (chemistry) , epoxy , materials science , composite material , thermoplastic , dielectric , crystallization , polymer chemistry , chemistry , organic chemistry , optoelectronics
Up to now, few techniques were available that allowed nondestructive in situ characterization of polymerization during the curing of a thermoset resin. Dynamic dielectric measurements made over a wide range of frequencies provide a sensitive and convenient control to follow up the epoxy‐amine cure or to follow the formation of the thermoplastic materials. The direct current measurements and the time of flight measurements were developed to confirm interpretation of the electrical techniques in terms of correlations of the evolution of the conductivity and the network formation and also to evaluate the real value of the ion mobility and its evolution in a course of reaction. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 65: 2529–2543, 1997