Title: DYNAMIC MECHANICAL PROPERTIES OF EPOXY RESINS
Abstract: The dynamic mechanical properties of epoxy resins cured with maleic anhydride have been studied over the 25-250℃ temperature region using a vibrating reed method. The temperature dependence of Young's modulus and the internal friction for the cured epoxy resin is typical for a slightly crosslinked polymer. A pronounced dispersion rigion is noted near 150℃ (which varies with the degree of cure), and is accompained by a prominent drop in Young's modulus in this region. The loss peak is due to the glass transition in the epoxy resin network, since above this temperature the specimens exhibit a rubberlike behaviour. Results presented here agree well with those of other investigators. However, the glass transition temperature determined by internal friction peak is much higher than that determined from the thermo-mechanical curves by Kargin et al., this difference suggests that the external force applied during a thermo-mechanical curve determination may produce certain mechano-chemical effects in the epoxy resin network.Experimental data obtained on the relation between the degree of crosslinking and the glass transition temperature are given and discussed.
Publication Year: 1964
Publication Date: 1964-01-01
Language: en
Type: article
Access and Citation
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot