Comparative study of the cure kinetics of an unsaturated polyester resin using different procedures
The cure kinetics of an unsaturated polyester resin were studied by differential scanning calorimetry (DSC), and different dynamic and isothermal procedures were compared. It was established that the isothermal kinetic analysis through the isoconversional adjustment lnt = A + E/RT is the method that...
Saved in:
Published in | Polymer engineering and science Vol. 36; no. 6; pp. 835 - 851 |
---|---|
Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Hoboken
Wiley Subscription Services, Inc., A Wiley Company
01.03.1996
Wiley Subscription Services Society of Plastics Engineers, Inc |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | The cure kinetics of an unsaturated polyester resin were studied by differential scanning calorimetry (DSC), and different dynamic and isothermal procedures were compared. It was established that the isothermal kinetic analysis through the isoconversional adjustment lnt = A + E/RT is the method that offers the most accurate results for unsaturated polyester resin cure kinetics. From this comparative study it was noted that the activation energy not only varies according to the degree of conversion but also according to the method used to evaluate the kinetic parameters. Furthermore, it was shown that the activation energy cannot be separated from the other adjustment parameters, so the different kinetic procedures used are not generally comparable. Different methods of evaluating the degrees of conversion α and the reaction rates dα/dt according to the experimental reaction heat were also studied. It was found that the method used has a strong influence on the values of α and dα/dt, but only a slight one on the kinetic parameters. |
---|---|
Bibliography: | ark:/67375/WNG-8K87L87Q-3 ArticleID:PEN10471 istex:A4E0197A9E9B41A663CEBE97400F240AECD104ED ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0032-3888 1548-2634 |
DOI: | 10.1002/pen.10471 |