Relaxational Behavior of Epoxide Resins Cured with Diamines

Abstract

Bisphenol, α, ω -diol and glycol type epoxide resins were cured with primary and tertiary amines. The relaxational behavior of these cured resins was followed by comparing tan δ curves with structural shemes of the cured systems. On the basis of the above observations, the relaxational behavior of the systems was interpreted to be responsible for the local mode relaxation and the relaxation induced from the hydroxy ether moieties. The new relaxational peak due to hydroxy ether moiety was detected by comparing tan δ curves of the cured systems with or without hydroxy ether moiety. Height of the peak was found to be proportional to the content of hydroxy ether moiety in the system.