EFFECT OF BULKY PENDANT GROUPS ON DISTORTIONAL DEFORMATION OF GLASSY EPOXY NETWORKS

摘要

The effect of bulky pendant groups on epoxy networks was studied using DGEBA/DDSnetworks. The bulky group was included as the reactive mono-amine 1-naphthylamine (1-NA)in concentrations of 2.5-10 wt%. Small amounts of a trifunctional epoxide resin were includedin the formulation to maintain the same average functionality as an unmodified DGEBA/DDSsystem. Increasing the amount of 1-NA resulted in an increase in modulus and yield strength,while strain at yield was equal to or higher than the baseline values for the unmodified system.