William W. Wright

A radiochemical study of the kinetics of epoxide cure: Reaction of phenyl glycidyl ether and other model epoxides with various imidazoles

Abstract The reactions of phenyl glycidyl ether and other model epoxides with a series of imidazoles have been investigated using a new radiochemical procedure. In the case of phenyl glycidyl ether and imidazoles containing a free imino group, there is an initial induction period that is a function of both the polarity of the medium and the reaction temperature. This reaction exhibits a first-order dependence on imidazole concentration (

Plastic deformation in highly cross-linked rubber-modified epoxy resins

Plastic yielding behaviour of three different cross-link density rubber-modified epoxy resins, at different rubber levels and temperature, were investigated. All the systems studied show decrease in Youngs modulus,E, and yield stress, σY, with increasing temperature and rubber content. The deformation process was analysed using both Bowden and Argon theories. Molecular parameters from each. theory were then compared with chemical structures of the epoxy systems.