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Time-temperature-water content equivalence on dynamic mechanical response of polyamide 6,6

Abstract : The aim of this work is to highlight an equivalence between the strain rate, the temperature and the water content effect on the dynamic mechanical response of polyamide 6,6. Based on WLF-like approach, the time-temperature-water content equivalence of store modulus and loss modulus had been demonstrated. Indeed increasing the water content results in a steady decrease of glass transition temperature toward a limiting value. This change in glass transition temperature leads to an horizontal shift of master curves in accordance with the water content level. A new shift factor can be introduced and a new relationship had been established giving the equivalent strain-rate at a temperature reference and water content reference. Finally, time-temperature-water content equivalence of mechanical behaviour of polyamide 6,6 had been validated at large strain on conditioned specimens subjected to loading-unloading tensile tests.
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Contributor : Magalie Prudon <>
Submitted on : Friday, January 26, 2018 - 10:50:35 AM
Last modification on : Thursday, September 24, 2020 - 6:30:08 PM

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Victor Fabre, Grégoire Quandalle, Noëlle Billon, Sabine Cantournet. Time-temperature-water content equivalence on dynamic mechanical response of polyamide 6,6. Polymer, Elsevier, 2018, 137, pp.22-29. ⟨10.1016/j.polymer.2017.10.067⟩. ⟨hal-01693349⟩

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