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Time--Temperature--Transformation (TTT) Cure Diagrams: Relationship Between Tg and the Temperature and Time of Cure for a Polyamic Acid/Polyamide System. Technical Report, No. 12, 31 December 1984-31 December 1986
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Time--Temperature--Transformation (TTT) Cure Diagrams: Relationship Between Tg and the Temperature and Time of Cure for a Polyamic Acid/Polyamide System. Technical Report, No. 12, 31 December 1984-31 December 1986

G Palmese and J Gillham
12
01 Jul 1987

Abstract

Glass transition temperature (Tg) were obtained vs. isothermal temperature (Tcure) and time of cure for a polyamic acid/polyimide system. A time temperature-transformation (TTT) isothermal cure diagram was constructed to include the time to vitrification and iso-Tg curves. As for epoxies, the relationship between Tcure and the time to vitrification is S-shaped. Plots of Tg vs. Tcure show that solvent evaporation and chemical reaction are controlled by vitrification.--GRAI

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