Tension behaviour of HNBR and FKM elastomers for a wide range of temperatures |
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| Institution: | 1. Department of Structural Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway;2. Aker Solutions AS, 3408 Tranby, Norway;1. MINES ParisTech, PSL Research University MAT-Centre des Matériaux, CNRS UMR7633, BP 87, 91003 Evry Cedex, France;2. European Synchrotron Radiation Facility, BP 220, 38043 Grenoble Cedex, France;1. Department of Materials Science, University of Patras, Patras 26504, Greece;2. Department of Physics, University of Patras, Patras 26504, Greece;3. MTA–BME Research Group for Composite Science and Technology, Műegyetem rkp. 3., H-1111 Budapest, Hungary |
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| Abstract: | This article presents uniaxial tension tests of three different elastomer compounds commonly applied as seal materials in the oil and gas industry. The tests were performed at five different temperatures, ranging from −20 to 150 °C. Optical measurements were used to ensure high quality stress–strain data. The material samples were exposed to a cyclic deformation history, enabling the viscoelastic behaviour to be explored. A considerable effect of temperature changes was found, with a pronounced increase of stiffness and viscosity for the lowest temperatures. A dip in the stress–strain curve was seen for one of the hydrogenated nitrile butadiene rubbers tested at low temperatures. Matrix-particle debonding simulations qualitatively described this stress dip. For the tests performed at the highest temperatures, a considerable number encountered material failure. |
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| Keywords: | Elastomers Uniaxial tension Temperature effects Relaxation Failure |
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