Annealing studies on a fully cured epoxy resin: Effect of thermal prehistory, and time and temperature of physical annealing
Article first published online: 9 MAR 2003
Copyright © 1989 John Wiley & Sons, Inc.
Journal of Applied Polymer Science
Volume 38, Issue 11, pages 2115–2130, 5 December 1989
How to Cite
Pang, K. P. and Gillham, J. K. (1989), Annealing studies on a fully cured epoxy resin: Effect of thermal prehistory, and time and temperature of physical annealing. J. Appl. Polym. Sci., 38: 2115–2130. doi: 10.1002/app.1989.070381113
- Issue published online: 9 MAR 2003
- Article first published online: 9 MAR 2003
- Manuscript Accepted: 17 OCT 1988
- Manuscript Received: 14 OCT 1988
The dynamic mechanical behavior at about 1 Hz of a fully cured epoxy resin (maximum glass transition temperature, Tg∞, ca. 170°C) ahs been studied during and after isothermal annealing in terms of the influence of thermal prehistory, time of annealing, and temperature of annealing (Ta). Annealing temperatures ranged from Tg − 15 to Tg − 130°C. The rate of isothermal annealing was observed to decrease by a decade for each decade increase of annelaing time when the material was far from equilibrium. Annealing at high temperatures did not measurably affect the mateiral properties during cooling (for T ≪ Ta); similarly the effect of annealing at low temperatures was not measurale during heating (for T ≫ Ta).