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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.
Moscow University Chemistry Bulletin.
2017, Vol. 58, No. 4, P. 163
   

Copyright (C) Chemistry Dept., Moscow State University, 2002
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