| Autor: |
Lur'e, E. G., Kovriga, V. V., Lebedinskaya, M. L. |
| Zdroj: |
Mechanics of Composite Materials; January 1972, Vol. 8 Issue: 1 p36-40, 5p |
| Abstrakt: |
A study was made of stress relaxation in polypyromellitimide film at degrees of stretching from 0.5 to 50% over a wide temperature range (below Tc). The applicability of the time-temperature superposition principle is shown at all degrees of stretching. It is shown that the Arrhenius equation for the temperature dependence of the displacement factoraT is valid only at small deformations (up to 1%). The extreme course of the relaxation rate from the level of deformations is attributed to the variations in the polypyromellitimide structure in this deformation region. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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