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...

Full description

Saved in:
Bibliographic Details
Published inPolymer engineering and science Vol. 36; no. 6; pp. 835 - 851
Main Authors Salla, Josep M., Ramis, Xavier
Format Journal Article
LanguageEnglish
Published Hoboken Wiley Subscription Services, Inc., A Wiley Company 01.03.1996
Wiley Subscription Services
Society of Plastics Engineers, Inc
Subjects
Online AccessGet full text

Cover

Loading…
More Information
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