Abstract: In this paper, the relaxation time spectra are derived from the dynamic mechanical temperature spectra and the influences of the thermal treatment conditions on the fine structure of the samples are analyzed from the changes of the relaxation time spectra. Furthermore, the relationship between the ratio C₁/C₂ of the parameters in the WLFequation and the super-molecular structure of the samples is discussed.

Key words: Temperature spectra, Relaxation time spectra, Super-molecular structure, The WLF equation