effect of prepolymer composition of amino-hardened liquid crystalline epoxy resins on physical properties of cured thermoset

Diglycidyl terminated 4,4'-oxydiphenyl cured with an aromatic diamine exhibits liquid crystalline properties, even if the amount of hardener is used in defect with respect to the stoichiometric amount. Physical properties of the resin, hardened with different quantities of amine are presented a...

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Published inMacromolecular symposia. Vol. 148; no. 1; pp. 197 - 209
Main Authors Carfagna, Cosimo, Amendola, Eugenio, Giamberini, Marta, D'Amore, Alberto, Priola, Aldo, Malucelli, Giulio
Format Journal Article
LanguageEnglish
Published Wiley-VCH Verlag GmbH & Co. KGaA 01.12.1999
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Summary:Diglycidyl terminated 4,4'-oxydiphenyl cured with an aromatic diamine exhibits liquid crystalline properties, even if the amount of hardener is used in defect with respect to the stoichiometric amount. Physical properties of the resin, hardened with different quantities of amine are presented and discussed. In particular the high values of fracture toughness of this class of thermoset has been explained on the basis of the biphasic nature of the crosslinked resin. The differences in mechanical properties are analyzed taking into account the different crosslink densities.
Bibliography:http://dx.doi.org/10.1002/masy.19991480116
ISSN:1022-1360
1521-3900
DOI:10.1002/masy.19991480116