High-elastic behavior of rubbery polymers at low strain rates

The results of an experimental investigation of the deformation behavior of rubbery amorphous polymers (polybutadiene SKD) at low strain rates and large deformation times are described. It is shown for the first time by a viscometric method that the process of strain development in rubbery polymers has a stepwise character. A model that takes the breakdown of the structure into account is proposed for describing the stepwise nature of the strain development.