TY - CONF A1 - Weltschev, Margit A1 - Haufe, Manuela A1 - Heyer, Martina T1 - Compatibility evaluations of sealing materials with aged biofuels T2 - CORROSION 2017 N2 - The objective of this research was to determine the resistance of frequently used sealing materials such as EPDM, FKM, FVMQ, CR, CSM, IIR, NBR, PA, PUR and VMQ in aged biodiesel and heating oil B10 with 10 % biodiesel. The mass, tensile strength, breaking elongation and Shore hardnesses of the test specimens were determined before and after exposure in non-aged, one-year, two-year, three-year and four-year aged biodiesel and B10 at 20 °C, 40 °C and 70 °C. A threshold for the reduction in tensile properties and Shore hardness is not set in the international standards. Therefore, a threshold of 15 % was set for the evaluation of the compatibility. The decrease in tensile properties and Shore hardness increased with the age and the temperature of the biodiesel and the heating oil. The age of the biodiesel was not relevant for the sealing materials CR, CSM, EPDM, IIR and NBR, which were generally not resistant to biodiesel and B10. FKM and PA showed high compatibility in non-aged and aged biodiesel. FVMQ and PA could be evaluated as resistant in non-aged and aged B10 at 20°C and 40°C, whereas FKM was resistant up to 70°C despite of the age of B10. T2 - CORROSION 2017 CY - New Orleans, LA, USA DA - 26.03.2017 KW - Sealing materials KW - Compatibility KW - Aged biodiesel KW - Aged heating oil with 10% biodiesel (B10) KW - Tensile properties KW - Shore hardness PY - 2017 SP - Paper 8847, 1 EP - 12 PB - NACE International, Publications Division CY - Houston, TX, USA AN - OPUS4-39637 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Weltschev, Margit A1 - Heming, Frank A1 - Haufe, Manuela A1 - Heyer, Martina T1 - The influence of the age of biodiesel and heating oil with 10 % biodiesel on the resistance of sealing materials at different temperatures T1 - Der Einfluss des Alters von Biodiesel und Heizöl mit 10 % Biodiesel auf die Beständigkeit der Dichtungswerkstoffe bei verschiedenen Temperaturen JF - Materialwissenschaft und Werkstofftechnik N2 - The objective of this research was to determine the resistance of frequently used sealing materials such as fluorocarbon rubber (FKM), fluorosilicone rubber (FVMQ), silicone rubber (VMQ), ethylene-propylene-diene rubber (EPDM), chloroprene rub-ber (CR), chlorosulfonated polyethylene (CSM), butyl rubber (IIR), acrylonitrile buta-diene rubber (NBR), polyester urethane rubber (PUR) and polyamide (PA) in non-aged/aged biodiesel and heating oil with 10 % biodiesel at 20 °C, 40 °C and 70 °C. Mass, tensile properties and Shore hardness A/D (for polyamide) of the test speci-mens were determined before and after the exposure for 84/42 days in the aged and non-aged fuels of different age. Biodiesel fuels are easily oxidized and contain acids and water. The sealing materi-als: acrylonitrile butadiene rubber, butyl rubber, chloroprene rubber, chlorosulfonated polyethylene and ethylene-propylene-diene rubber and were generally not resistant to biodiesel and heating oil with 10 % biodiesel. Fluorocarbon rubber, fluorosilicone rubber and polyamide were the most resistant materials in all tested fuels up to 70 °C. The degree of damage to the sealing materials increased with higher test temperatures and the age of the fuels. KW - Sealing materials KW - Biofuels KW - Tensile properties KW - Shore hardness PY - 2017 DO - https://doi.org/10.1002/mawe.201700058 SN - 0933-5137 SN - 1521-4052 VL - 48 IS - 9 SP - 837 EP - 845 PB - Wiley-VCH Verlag GmbH & Co.KGaA CY - Weinheim AN - OPUS4-42077 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -