Creep of epoxy matrix in thermal cycling

Deformation of thermoreactive EDT-10 matrix was investigated at a constant stress and temperature periodically varying from 27 to 150° C. The experimental data were compared with those theoretically predicted and obtained by using the data of independent creep tests at different constant temperatures and thermal cycling creep tests of unloaded EDT-10 specimens. The method of predicting the nonisothermal thermoviscoelastic deformation of the EDT-10 polymer matrix based on the time-temperature superposition principle was found to have accuracy acceptable for engineering applications.