TY - CONF A1 - Cano Murillo, Natalia A1 - Balasooriya, Winoj A1 - Theiler, Geraldine T1 - Effect of hydrogen environment on the physical and mechanical properties of elastomers N2 - The development of a robust hydrogen infrastructure poses challenges to materials exposed to high pressurized hydrogen environments. Polymeric materials, which are expected to perform as seals, gaskets, O-rings, hoses among other applications face high risk of damage due to rapid gas decompression (RGD) which might cause operational safety issues. In this study, we intend to assess the effects of a high pressurized hydrogen environment on carbon black filled (CB) elastomers. The materials were exposed to 100 MPa hydrogen atmosphere at room temperature and at 85°C. Ex-situ characterization was performed during the first 30 minutes after decompression and repeated two days after the exposure when total gas desorption has taken place. The physical and mechanical characteristics of the materials were determined by means of density and volume change, hardness and tensile tests, and dynamic mechanical analysis. T2 - EHEC, the European Hydrogen Energy Conference 2024 CY - Bilbao, Spain DA - 06.03.2024 KW - High pressurized Hydrogen KW - Sealing Materials KW - Carbon Black Filled Elastomers PY - 2024 AN - OPUS4-60706 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Theiler, Geraldine A1 - Cano Murillo, Natalia A1 - Halder, Karabi A1 - Balasooriya, Winoj A1 - Hausberger, Andreas A1 - Kaiser, Andreas T1 - Effect of high-pressure hydrogen environment on the physical and mechanical properties of elastomers N2 - This study presents the influence of high-pressure hydrogen environment on the physical and mechanical properties of two types of cross-linked hydrogenated acrylonitrile butadiene rubbers. Based on the CSA/ANSI standard, static exposures in hydrogen experiments were performed up to 100 MPa at 120 °C. Characterization before and after exposure was conducted by means of density and hardness measurements, dynamic mechanical analysis (DMA), tensile tests, compression set, FT-IR and AFM analyses to assess effects after decompression. While the effect of high-pressure exposure is significant immediately after exposure, most of the physical and mechanical properties recover after 48 hours. FT-IR, AFM, SEM and compression set results indicate, however, permanent effects. KW - Hydrogen KW - Mechanical properties KW - Elastomers KW - High-pressure hydrogen environment PY - 2024 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-597102 DO - https://doi.org/10.1016/j.ijhydene.2024.01.148 SN - 0360-3199 VL - 58 SP - 389 EP - 399 PB - Elsevier Ltd. AN - OPUS4-59710 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Clute, C. A1 - Balasooriya, Winoj A1 - Cano Murillo, Natalia A1 - Theiler, Geraldine A1 - Kaiser, A. A1 - Fasching, M. A1 - Schwarz, Th. A1 - Hausberger, A. A1 - Pinter, G. A1 - Schloegl, S. T1 - Morphological investigations on silica and carbon-black filled acrylonitrile butadiene rubber for sealings used in high-pressure H2 applications N2 - Effects of NBR formulations on properties for high-pressure gas systems were tested. Functionalized silica enhances typical properties to a comparable range like CB. The balance of additives results in suitable RGD performance. Silica filled NBR shows lower H2 uptake compared to non-plasticized CB filled NBR. Morphology of CB filled NBR is less affected by H2 than silica filled grades. KW - High-pressure hydrogen gas KW - Sealing KW - Acrylonitrile butadiene rubber KW - Filler-rubber-interaction KW - Rapid gas decompression (RGD) PY - 2024 DO - https://doi.org/10.1016/j.ijhydene.2024.04.133 SN - 0360-3199 VL - 67 SP - 540 EP - 552 PB - Elsevier Ltd. AN - OPUS4-60559 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Denora, Isabella A1 - Clute, Clara A1 - Murillo, Natalia Cano A1 - Theiler, Geraldine A1 - Balasooriya, Winoj A1 - Kaiser, Andreas A1 - Fasching, Michael A1 - Schwarz, Thomas A1 - Marano, Claudia T1 - A study on the mechanical behaviour of carbon black and Struktosil-filled NBR compounds for hydrogen applications N2 - This study investigates the effect of the addition of a 2D filler (Struktosil) to a carbon black-filled acrylonitrile butadiene rubber, developed for seals in hydrogen applications. Several characterization methods have been adopted. The addition of Struktosil increases the stiffness of the material up to a strain of about 100%, to a lesser extent in presence of a plasticizer. The dissipative response of the material is increased by Struktosil addition and decreased in presence of the plasticizer. Concerning fracture behaviour, the crack initiation and Rapid Gas Decompression (RGD) resistance were not affected by the addition of Struktosil but decreased in presence of plasticizer. Furthermore, the addition of Struktosil had a positive effect on crack propagation resistance. The effects of pressurized hydrogen exposure on physical-mechanical properties were also evaluated and correlated with the results. A correlation between fracture toughness and RGD resistance has been also attempted. KW - Acrylonitrile Butadiene rubber KW - Fracture mechanics KW - 2D filler KW - High-pressure hydrogen KW - Rapid gas decompression PY - 2025 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-648285 DO - https://doi.org/10.1016/j.ijhydene.2025.03.122 SN - 0360-3199 VL - 118 SP - 407 EP - 416 PB - Elsevier Ltd. AN - OPUS4-64828 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Theiler, Geraldine A1 - Halder, Karabi A1 - Balasooriya, Winoj T1 - Effect of high-pressure hydrogen environment on the physical and mechanical properties of elastomers N2 - This paper deals with the exposure of HBNR rubbers to high pressure hydrogen (100 MPa) at 120 °C for 7 and 21 days under static conditions followed by characterization of their physical and mechanical properties. T2 - EHEC European Hydrogen Energy Conference 2022 CY - Madrid, Spain DA - 18.05.2022 KW - Rubbers KW - Hydrogen KW - Characterization PY - 2022 SP - 1 EP - 2 AN - OPUS4-62085 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -