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Effect of stretching on the network structure of carbon black filled EPDM rubbers.

Abstract : Carbon black filled ethylene-propylene-diene-monomer (EPDM) has been widely studied in the recent years. Thanks to its good electrical properties, high resistance to ageing and mechanical properties, it is one of the best candidates for the automotive industry. The improvement of its mechanical properties should be based on a good understanding of the microstructural changes induced by loading. The damage mechanisms, i.e. cavitation / decohesion, are usually studied in the literature by in-situ SAXS [1] or volume changes [2]. However, to the authors’ knowledge, no study was devoted to microstructural characterization allowing taking into account the heterogeneity of the rubber network. Thus, the present work proposes an approach to identify the network structural evolution of EPDM rubbers induced by loading combining volume measurements, swelling and thermoporosimetry.
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Nicolas Candau, Jean-Luc Bouvard, Edith Peuvrel-Disdier, Rudy Valette, Noëlle Billon. Effect of stretching on the network structure of carbon black filled EPDM rubbers.. 16ème Conférence Elastomery (Elastomery 2015), Nov 2015, Tours, France. 2 p. ⟨hal-01502249⟩

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