Influence of stress level and humidity of series of samples on relaxation characteristics of epoxy polymers

The article presents the results of a study of the relaxation process of polymer materials based on the epoxy binder Etal-247 depending on the level of applied tensile stress and the humidity state of a series of samples. The relaxation curves were approximated using the Kohlrausch equation, numerical values of the indicators were calculated depending on the level of relaxing stress and moisture content of the sample series. It was found that the samples of the composition Etal-247/Etal-1472 are characterized by the most relaxation stability and the samples of the composition Etal-247/Etal-45TZ2 by the least relaxation stability.