Creep and recovery of EPDM elastomer using a modified sandwich rheometer
2001; Elsevier BV; Volume: 20; Issue: 4 Linguagem: Inglês
10.1016/s0142-9418(00)00044-1
ISSN1873-2348
AutoresGabriel J. Osanaiye, Kolapo P. Adewale,
Tópico(s)Polymer Nanocomposites and Properties
ResumoPolymer products constantly experience small and large deformations over a period of time in their life cycle. The durability of such products depends on an accurate understanding of the responses of virgin polymers to deformation. This understanding can be achieved from creep and creep recovery studies. When these studies are conducted on virgin polymers, they elucidate the response behaviour of the materials to small stresses at molecular level. In this work, a sandwich rheometer was modified to measure creep and recovery of a commercial elastomer (EPDM) under various constant stresses. The results were compared with mechanical predictions of viscoelastic models. There is a fair agreement among the experimental data, Burger's model, and the standard fluid model. These results showed that the sandwich rheometer can be carefully used to investigate critical rheological behaviour of polymers undergoing infinitesimal deformation.
Referência(s)