On the separation of physical and chemical component of stress relaxation

  • Ito M
  • 2

    Readers

    Mendeley users who have this article in their library.
  • 10

    Citations

    Citations of this article.

Abstract

This paper proposes a new method to separate physical and chemical components of stress relaxation. The stress relaxation measurements of tetrafluoroethylene-propylene rubber were carried out at various temperatures ranging from 200° to 310°C. A physical stress relaxation master curve could be generated from data of early period of time by the time-temperature superposition principle. The rate of physical stress decay at given temperatures was calculated from the master curve. The rate of chemical stress relaxation was given by subtracting the rate of physical decay from experimentally obtained rate at the corresponding temperatures. The activation energy was found to be 8.4 kcal mol-1for the rates of the calculated chemical stress relaxation, while it was found to be 5.7 kcal mol-1for the rates which were obtained in air. The results show that the physical component of stress decay should be subtracted from the measured stress relaxation curve to obtain the rate of chemical stress decay, especially at the low temperature. © 1982.

Author-supplied keywords

  • Chemorheology
  • activation energy
  • fluoroelastomer
  • master curve
  • stress relaxation
  • time-temperature superposition

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

  • Masayuki Ito

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free