Thermo-mechanical behavior in Poly(methyl methacrylate) with different molecular weights.

Carlos Eloy Federico Fernandez; Jean-Luc Bouvard; Noëlle Billon; Christophe Pradille; Christelle Combeaud

Thermo-mechanical behavior in Poly(methyl methacrylate) with different molecular weights.

Carlos Eloy Federico Fernandez ¹ Jean-Luc Bouvard ¹ Noëlle Billon ¹ Christophe Pradille ² Christelle Combeaud ¹

1 CEMEF - Centre de Mise en Forme des Matériaux

2 Mat Xper

Abstract : During manufacturing processes, thermoplastic polymers can be subjected to extensive stretching above their glass transition temperature but below their flowing temperature. Examples can be found in thermoforming and injection stretch blow molding of bottles. To improve the manufacturing techniques, a good understanding of the material behavior from its flow state to its solid state is determinant. Many thermomechanical approaches have been proposed by different authors to catch the material response for amorphous polymers. However, those models don’t describe the material behavior at temperatures higher than the glass transition temperature. To overcome this limitation, we study the material mechanical response under tensile loading at low strain (linear viscoelastic region) and at high strain in the range of temperatures of interest. The main purpose of this work is to understand and to model the mechanical behavior of amorphous polymers from their glass transition temperature up to their flowing temperature accounting the microstructural evolution in the material.

Keywords : PMMA thermo-mechanical behavior rubbery state molecular weights

Type de document :

Communication dans un congrès

Domaine :

Sciences de l'ingénieur [physics] / Matériaux

Liste complète des métadonnées

https://hal-mines-paristech.archives-ouvertes.fr/hal-01260858
Contributeur : Nadine Alziary - Manuel <>
Soumis le : vendredi 22 janvier 2016 - 16:02:32
Dernière modification le : mardi 26 mars 2019 - 16:22:02

Thermo-mechanical behavior in Poly(methyl methacrylate) with different molecular weights.

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Thermo-mechanical behavior in Poly(methyl methacrylate) with different molecular weights.

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