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Curing of epoxy resins with dicyandiamide and urones
Author(s) -
Güthner Thomas,
Hammer Benedikt
Publication year - 1993
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1993.070500817
Subject(s) - curing (chemistry) , epoxy , fourier transform infrared spectroscopy , materials science , sorption , stoichiometry , polymer chemistry , chemistry , composite material , chemical engineering , organic chemistry , adsorption , engineering
The curing of epoxy resins using dicyandiamide (DICY) and combinations of DICY with several uron accelerators as curing agents is investigated. DSC, FTIR, mechanical, and sorption measurements indicate complex multistage curing processes. There is no evidence that the curing reaction is catalyzed by DICY. The optimum stoichiometry is determined as 7 epoxy units per 1 molecule DICY. Contour plots for curing reactions with DICY in presence of Fenuron 3c or TDI‐uron 3d give some information for optimizing technical formulations. © 1993 John Wiley & Sons, Inc.