Original Research

The use of a rheological technique in the determination of the curing kinetics of a reactive polyester powder coating

O. C. Vorster, L. Halasz
Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie | Vol 23, No 1/2 | a188 | DOI: https://doi.org/10.4102/satnt.v23i1/2.188 | © 2004 O. C. Vorster, L. Halasz | This work is licensed under CC Attribution 4.0
Submitted: 23 September 2004 | Published: 23 September 2004

About the author(s)

O. C. Vorster, Departement Polimeertegnologie, Tshwane Universiteit van Tegnologie, South Africa
L. Halasz, Departement Polimeertegnologie, Tshwane Universiteit van Tegnologie, South Africa

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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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