Mechanical Relaxation of Epoxide Resins Cured with Amines

Abstract

Bisphenol-, α, ω-diol and glycol type epoxide resins were cured with p, p'-diaminodiphenylmethane, a, w-diamines and triethylenetetramine.
Relaxation behavior was fo llowed by observing dynamic mechanical properties and segmental structures of these resines, and α-, α'-, β- or γ-relaxation was observed in the neighborhood of 170, 80, -50 or -130°C, respectively.
The β-relaxation is attribu ted to the motion of hydroxyl-ether group and the γ-relaxation is attributed to the motion of methylene linkage or polyethylene glycol linkage in these resines.