Abstract
Relaxation spectra of polyneoprene (PNP) were determined by the Schwarzl-Staverman method [15] using experimental creep data. The real spectrum distribution was approximated by the Charlier function constituting a more general distribution. The application of Kolmogorov's and Pearson's criteria showed that the empirical spectrum distribution is not substantially different from the Charlier distribution and that the deviations are stochastic in character. Varying the temperature produces a displacement of the entire spectrum set along the time scale. If the temperature dependence of the spectrum is known, the mechanical reaction of PNP can be calculated for a given temperature. Creep curves constructed with the aid of an electronic computer by a method that accounts for a continuous relaxation spectrum fit into an experimental confidence interval.
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