Publicado 4 números por año
ISSN Imprimir: 2169-2785
ISSN En Línea: 2167-857X
Indexed in
INVESTIGATION OF THE ISOTHERMAL RHEOKINETIC POLYMERIZATION OF THE EPOXY OLIGOMER
SINOPSIS
The results of experimental and numerical study of the viscosity of the binder composite material based on epoxy resin L and the hardener EPH 161 during the curing reaction are presented. Rheological tests were performed on a rotating rheometer Physica MCR 501. Flow and viscosity curves measured during isothermal polymerization in the temperature range from 25 to 45°C are obtained. Time dependence of viscosity is approximated using a modified Chong's formula. Numerical analysis of temperature dependences of viscosity allowed estimation of the reaction rate constants of the polymerization process, which makes it possible to predict the behavior of the polymer during its formation. A comparison of the reaction rate constants are determined by the rheological and IR-spectroscopy methods.
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