Influence of fillers on mechanical properties of ATH filled EPDM during ageing by gamma irradiation

Emilie Planes (1) , Laurent Chazeau (1) , Gerard Vigier (1) , Jerome Fournier (2) , Isabelle Stevenson-Royaud (3)

1 MATEIS - Matériaux, ingénierie et science [Villeurbanne]
2 NRC - NEXANS RESEARCH CENTER
3 IMP-LMPB - Ingénierie des Matériaux Polymères - Laboratoire des Matériaux Polymères et des Biomatériaux

The presence of a significant content of fillers accelerates the degradation of ATH filled EPDM subjected to gamma irradiation at room temperature. Above the melting temperature of the EPDM, this induces a decrease in the apparent mechanical reinforcement of the fillers. This also promotes de-cohesion mechanisms which leads to an increase in the strain at break with irradiation dose. It is not clear whether the use of a filler treatment attenuates this accelerating effect or not; however, part of this treatment remains efficient at a high dose and seems also to delay but not suppress the occurrence of de-cohesion mechanisms at large strain. Moreover, at room temperature, i.e. below the melting temperature, all the consequences of ageing by gamma irradiation are strongly attenuated by the presence of a semicrystalline microstructure, the morphology of which is not too strongly modified by irradiation. (C) 2010 Elsevier Ltd. All rights reserved.

Mots clés: Filled rubber; Irradiation; Mechanical properties; Keywords-Plus = TEMPERATURE THERMAL-OXIDATION; LOW-DOSE RATE; RELAXATION BEHAVIOR; POLYETHYLENE; RUBBER; ELASTOMERS; REINFORCEMENT; COMPOSITES; FLUX; Subject-Category = Polymer Science; Author-Email = [e-mail]; Number-of-Cited-References = 37; Times-Cited = 0; Journal-ISO = Polym. Degrad. Stabil.; Doc-Delivery-Number = 610RA; Unique-ID = ISI:000278750800017; Journal-ISO = Polym. Degrad. Stabil

Domaines: Mécanique des matériaux [physics.class-ph]; Mécanique des matériaux [physics.class-ph]

Emilie Planes, Laurent Chazeau, Gerard Vigier, Jerome Fournier, Isabelle Stevenson-Royaud. Influence of fillers on mechanical properties of ATH filled EPDM during ageing by gamma irradiation. Polymer Degradation and Stability, 2010, 95 (6), pp.1029-1038. ⟨10.1016/j.polymdegradstab.2010.03.008⟩. ⟨hal-00539977⟩