Evaluation of stability of elastomer packing exposed to influence of various biofuels
¹Czech University of Life Sciences Prague, Faculty of Engineering, Department of Material Science and Manufacturing Technology, Kamýcká 129, CZ16521 Prague 6, Czech Republic
²Czech University of Life Sciences Prague, Faculty of Engineering, Department of Mechanical Engineering, Kamýcká 129, CZ16521 Prague 6, Czech Republic
³Czech University of Life Sciences Prague, Faculty of Engineering, Department for Quality and Dependability of Machines, Kamýcká 129, CZ16521 Prague 6, Czech Republic; *Correspondence: pexa@tf.czu.cz
Abstract:
The aim of the European Union Member States is to reduce dependence on fuels derived from oil. For this reason, significant attention is paid to the use of organic products as a substitute or an additive in the fuel of petroleum origin. The usage of biofuels in conventional combustion engines is not easy due to the different properties of the products. The aim of the research was to determine the effect of biofuels on mechanical properties of O-rings type ACM (polyacrylate elastomer). The research was evaluated by the change of density, Shore A hardness, permanent deformation CS, tensile strength and deformation after exposure in the test environment for a period of 15 months. Comparing the O-rings immersed in standard diesel fuel it is clear that similar behaviour of the hardness shows are sunflower oil and canola oil. RME – Rapeseed Methyl Ester 20% and oil from Jatropha has a negative effect on the increase in hardness. Comparing the O-rings immersed in standard diesel fuel it is evident that except RME – Rapeseed Methyl Ester 20% other fuels have negative influence on permanent deformation CS.
Key words:
biofuels, compression and tensile properties., O-ring