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Estimation of kinetic parameters associated with the curing of thermoset resins. Part I: Theoretical investigation
Author(s) -
Scott Elaine P.,
Saad Zoubeir
Publication year - 1993
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760331802
Subject(s) - thermosetting polymer , epoxy , curing (chemistry) , materials science , arrhenius equation , isothermal process , kinetic energy , differential scanning calorimetry , thermodynamics , reaction rate constant , composite material , kinetics , activation energy , chemistry , physics , quantum mechanics
This is a two‐part theoretical and experimental study on the estimation of kinetic parameters associated with the curing of a thermoset epoxy resin. In Part I, the estimation procedure is presented. This estimation procedure is based on a method referred to as the Box‐Kanemasu method, which involves the minimization of a least squares function, and it represents a new application of this method. The kinetic parameters under consideration were the Arrhenius constants associated with two rate constants in a kinetic model used to describe the curing rate of an amine epoxy resin. The use of differential scanning calorimetry (DSC) and dielectric data assuming isothermal and dynamic experimental conditions was first investigated in a sensitivity study. It was determined that the degree of cure should be treated as the dependent variable and that data from isothermal experiments should be used. The estimation procedure was then used to estimate the Arrhenius constants from simulated degree of cure data with added errors. These results compared favorably with those found using a linear regression method.