Characterization and modeling of diglycidyl ether of bisphenol‐a epoxy cured with aliphatic liquid amines

Abstract

The characterization by DMA and compressive stress-strain behavior of an epoxy resin cured with a number of liquid amines is studied in this work along with predictions of the associated properties using Group Interaction Modeling (GIM). A number of different methods are used to assign two of the input parameters for GIM, and the effect on the predictions is investigated. Excellent predictions are made for the glass transition temperature, along with good predictions for the beta transition temperature and modulus for the majority of resins tested. Predictions for the compressive yield stress and strain are less accurate, due to a number of factors, but still show reasonable correlation with the experimental data. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 3130-3141, 2013 Copyright © 2013 Wiley Periodicals, Inc

Improving mechanical properties and processability of a very high Tg epoxy amine network via anti‐plasticizer fortification

“…For these reasons, improving properties through control of the network structure, rather than by creating a micro‐ or nano‐ phase separated structure is of significant interest. Many studies have explored structure property relationships in epoxy amine networks, 14–20 although the comprehensive assessment of the role of the crosslink density and chain flexibility by Halary 21 is particularly noteworthy. These studies highlight that processability and final network properties can often be conveniently controlled via the addition of miscible bi‐ or higher functionality epoxy resin or amine hardener with a flexible or rigid backbone.…”