Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 37: Issue 8
Vitrification and physical ageing on isothermal curing of an epoxy resin
Author:
S. Montserrat Laboratorio de Termodinámica y Fisicoquímica, Escuela Técnica Superior de Ingenieros Industriales de Terrassa Universidad Politecnica de Cataluna Calle Colón 11 08222 Errasa España

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Pages:
1751–1758
Online Publication Date:
23 Jul 2005
Publication Date:
01 Aug 1991
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf01912205
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Vitrification phenomena and further structural relaxation processes or physical ageing occurring in the isothermal curing reaction of an epoxy resin are studied by Differential Scanning Calorimetry (DSC). The vitrification time,tv, the limiting conversion degree and the limiting glass transition temperature (Tg) are evaluated at curing temperatures (Tc) between 30 and 100‡C. The dependence of limitingTg withTc permits the determination of the maximumTg of the resin (109‡C). The physical ageing, which appears as the the last step of curing reaction for curing times above to vitrification, is analyzed through the endothermic peak superposed to the glass transition temperature. The results obtained in partially reticulated resin show the kinetics of the physical ageing to slow down asTc increases, as a consequence that the segmental mobility is reduced.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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