Creep of solid epoxy resin

Were tested for creep of the cured polyester resin PN-1, depending on the mechanical stress (2,6 ÷ 24 MPa) and temperature (15 ÷ 45 °C). In all cases, the dependence of the strain on the time was characteristic of the low temperature (logarithmic) creep. It is shown that for the interpretation of experimental data is possible using the model developed for crystalline solids. The estimation of the size of "elementary volume", which can be subjected to continuous deformation regardless of the deformation of the neighboring elementary volume.