Abstract
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.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
