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D. L. Rodin, A. N. Varnavski, S. Yu. Stefanovich, M. Yu. Yablokova
Gelation
and phase separation in the epoxy systems: polyetherimide influence
Abstract
The dependence on the time of active and reactive components of the
permittivity of curing composition of thermoplastic and epoxy was studied in
the wide frequency range of the electric field. According to data there was
calculated gelation and vitrification times, set the beginning of the phase
separation. Obtained by dielectric spectroscopy curing characteristics were
confirmed by viscometry and optical microscopy. Depending on the curing agent
in a phase separation there was observed different morphology of the
precipitating phase.
Key words:gelation, vitrification, epoxy, phase separation.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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