Anomalies between microwave and thermal cure kinetics of epoxy-amine resin systems

Rogers, DG, Marand, E, Hill, DJT and George, GA (1999) Anomalies between microwave and thermal cure kinetics of epoxy-amine resin systems. High Performance Polymers, 11 1: 27-39.


Author Rogers, DG
Marand, E
Hill, DJT
George, GA
Title Anomalies between microwave and thermal cure kinetics of epoxy-amine resin systems
Journal name High Performance Polymers   Check publisher's open access policy
Publication date 1999
Sub-type Article
DOI 10.1088/0954-0083/11/1/003
Volume number 11
Issue number 1
ISSN 0954-0083
Start page 27
End page 39
Total pages 13
Place of publication Bristol, UK
Publisher IOP Publishing
Collection year 1999
Language eng
Subject C1
250502 Physical Chemistry of Macromolecules
780103 Chemical sciences
Abstract The cure of the epoxy systems MY721/27% DDS at 160 degrees C and MY721/32% DDM at 120 degrees C have been investigated in both rectangular and cylindrical microwave cavities and thermally. The cure rates were monitored by FT-NIR spectroscopy over the region 4750-7250 cm(-1). The rates of cure in the microwave cavities, estimated from both the primary and epoxy group concentrations, were found to be different, and different from the rate observed for thermal cure in a heated aluminium block. This anomalous behaviour has been attributed to spatial inhomogeneity in the temperature of the epoxy samples, arising from inhomogeneity in the microwave field in the cavity, rather than to specific absorptions of the microwave radiation by the reactive groups in the epoxy samples, as has been suggested previously by some other authors.
Keyword Polymer Science
Spectroscopy
Mechanisms
Ir
Q-Index Code C1

Document type: Journal Article
Sub-type: Article
Collection: School of Chemistry and Molecular Biosciences
 
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