Original Research
The use of a rheological technique in the determination of the curing kinetics of a reactive polyester powder coating
Submitted: 23 September 2004 | Published: 23 September 2004
About the author(s)
O. C. Vorster, Departement Polimeertegnologie, Tshwane Universiteit van Tegnologie, South AfricaL. Halasz, Departement Polimeertegnologie, Tshwane Universiteit van Tegnologie, South Africa
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PDF (145KB)Abstract
In this article a study of the curing process of carboxyl terminated polyester-triglycidyl isocyanurate systems is reported. A comparison is made between the generally used Differential Scanning Calorimetric methods and rheokinetic methods, using a parallel plate oscillating stress rheometer. Gel times were determined and scaling exponents calculated. A new method for the estimation of the extent of reaction is presented and compared with results obtained by means of differential scanning calorimetry
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