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The effects of fillers on the chemorheology of highly filled epoxy resins: I. Effects on cure transitions and kinetics

✍ Scribed by Nara Altmann; Peter J Halley

Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
128 KB
Volume
52
Category
Article
ISSN
0959-8103

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✦ Synopsis

Abstract

This work examines the effects of level of silica filler (at 0, 10, 30, 50 wt%) on the gelation and vitrification of a model silica‐filled diglycidyl ether of bisphenol F (DGEBF)/methylenedianiline (MDA) system. An increased filler level is shown to decrease the gelation and vitrification times at low temperatures (below 80 °C). FTIR cure kinetics show that the reaction rates are increased and the activation energies of gelation are reduced at these temperatures, indicating that network formation is made easier. Entropic and catalytic reasons for this phenomenon are discussed.

Β© 2003 Society of Chemical Industry

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