Long-term stress relaxation behavior of Polyaniline-EPDM blends using the time-temperature-strain superposition method. (30th November 2018)

• Record Type: Journal Article
• Authors: Irfan, Muhammad Shafiq; Gill, Yasir Qayyum; Hashmi, Motahira; Ullah, Sana; Saeed, Farhan; Qaiser, Asif Ali
• Is Part Of: Materials research express. Volume 6:Number 2(2019)
• Publication Date: 2018-11-30
• Subjects: stress relaxation -- master curve -- viscoelastic -- polymer blend; Materials science -- Research -- Periodicals; Materials science -- Periodicals; 620.11
• DOI: 10.1088/2053-1591/aaf06a
• Languages: English
• ISSNs: 2053-1591

Abstract

Abstract: Long-term nonlinear viscoelastic stress response of polyaniline filled EPDM blends at various temperatures and strain levels were measured in short-term tests to check the applicability of time-temperature-strain superposition principle. A unified relaxation modulus master curve was constructed from the short-term tests. The unified master curve establishes the relaxation modulus over 18 months, which is 4.6 decades longer than the test duration. It was demonstrated that the time-temperature-strain superposition principle offers an accelerated testing methodology for determining the material's long-term stress relaxation response at a reference strain and temperature.