The majority of existing models for processing of thermoset matrix composites concentrate nearly exclusively on heat and mass transfer problems and account for material-related aspects in a very simplified manner. The objective of this work is to provide that missing element by proposing a clearly defined system which yields all the information of Gillham's T-T-T diagram but can be used for non-isothermal curing cycles. To build the system, three elements are needed: the gelation and vitrification curves, expressed as functions of degree of conversion; the kinetic model of conversion; and a diagram combining all complex information provided by the system. The proposed system for Narmco resins incorporates Cole's recently developed mechanistic model for the kinetics of conversion. The algorithm calculates and graphically presents the progress of thermoset processing using the developed diagrams which reintroduce time as an independent variable. The diagrams and the system may be applied to any processing cycle. Results obtained from the system are positively verified by experiments conducted on the Rheometrics dynamic analyser
Посилання на статтю:
Alpha-T-T and T-T-alpha-T diagrams as a new element in comprehensive modelling of thermoset processing / Barbara A. Osinski // Polymer. – 1993. – Vol 34. – P. 752-758.
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