TY - JOUR A1 - Weltschev, Margit T1 - Kostengünstiger Stahl mit hoher Beständigkeit KW - Duplexstahl KW - Korrosionsbeständigkeit KW - Tankwerkstoff KW - Gefahrguttransport KW - BAM-Liste PY - 2009 SN - 0944-6117 IS - 6 SP - 20 EP - 21 PB - Vogel CY - München AN - OPUS4-19640 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Comparsion of the resistance to oxidative degradation of polyethylene grades with the test performance behaviour of packagings for the transport of dangerous goods T2 - CORROSION 2010 CY - San Antonio, TX, USA DA - 2010-03-14 PY - 2010 AN - OPUS4-21052 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niebergall, Ute A1 - Weltschev, Margit T1 - Comparison of the stress crack resistance of polyethylene grades with the test performance behaviour of packagings for the transport of dangerous goods N2 - Resistance to stress cracking by wetting solution is one of the selected properties together with the corresponding test method FNCT and tolerances for a comparison of polyethylene grades of one design type in the procedural rule on suitability proof for alternative plastic resins used for packagings and intermediate bulk Containers (IBCs) for the transport of dangerous goods. The environmental stress crack resistance determined by Full Notch Creep Test (FNCT) represents the impacts from the stacking tests at 40 °C performed with Standard liquid wetting solution (without pre-storage) and with normal butyl acetate saturated wetting solution (pre-storage with normal butyl acetate). Environmental stress crack resistance determined with FNCT for the polyethylene grades was related to the times to failure of different jerrican samples made of these grades in stacking tests with 5 % wetting solution and a n-butyl acetate saturated wetting solution (pre-storage with n-butyl acetate) at 40 °C. The FNCT is suitable for comparison of polyethylene grades in relation to environmental stress crack resistance independent of their use as drum, IBC or jerrican material. The stiffness of polyethylene grades should be taken into account to the comparison as jerricans are not only chemically but also mechanically stressed. T2 - PPS-27 - 27th World congress of the polymer processing society CY - Marrakech, Morocco DA - 10.05.2011 KW - Gefahrgutverpackungen KW - Polyethylenformstoffe KW - Full notch creep test KW - Stapeldruckprüfung PY - 2011 SP - 1 EP - 4 AN - OPUS4-23834 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Bäßler, Ralph T1 - Use of Higher Alloyed Metallic Materials and Duplex Steels for Transport Tanks of Dangerous Goods T2 - Steels in Cars and Trucks (SCT 2011) CY - Salzburg, Austria DA - 2011-06-06 PY - 2011 AN - OPUS4-23801 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Werner, Jan A1 - Brandt, S. T1 - Compatibility of high density polyethylene grades with bioethanol-gasoline blends and biodiesel T2 - EUROCORR 2012 - The European corrosion congress CY - Istanbul, Turkey DA - 2012-09-09 PY - 2012 SP - 1 EP - 12(?) AN - OPUS4-26534 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Werner, Jan A1 - Brandt, S. T1 - Compatibility of high density polyethylene grades with bioehanol-gasoline blends and biodiesel T2 - EUROCORR CY - Istanbul, Turkey DA - 2012-09-09 PY - 2012 AN - OPUS4-26683 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Schädenb an Tanks zum Transport von Gefahrgütern T2 - GfKORR Jahrestagung 2012 : Aus Schaden wird man klug CY - Frankfurt am Main, Germany DA - 2012-11-06 PY - 2012 AN - OPUS4-26906 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Schäden an Tanks zum Transport von Gefahrgütern T2 - GfKORR-Jahrestagung 2012 - Aus Schaden wird man klug CY - Frankfurt/M., Germany DA - 2012-11-06 KW - Tankcontainer KW - Tankfahrzeuge KW - Eisenbahnkesselwagen KW - Gefahrguttransport KW - Korrosionsschäden KW - Schadensursachen PY - 2012 SN - 978-3-935406-49-9 SP - 1 EP - 10(?) PB - DECHEMA AN - OPUS4-26939 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Beständigkeit von Polythylenformstoffen und Dichtungswerkstoffen gegenüber Biokraftstoffen T2 - Gefahrgut-Technik-Tage Verpackungen, BAM CY - Berlin, Germany DA - 2012-11-12 PY - 2012 AN - OPUS4-26955 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Beständigkeit von Polyethylenformstoffen und Dichtungswerkstoffen gegenüber Biokraftstoffen T2 - BAM 13. Gefahrgut-Technik-Tage Verpackungen + IBC, BAM CY - Berlin, Germany DA - 2012-11-12 PY - 2012 AN - OPUS4-27211 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Beständigkeit von Polyethylenformstoffen und Dichtungswerkstoffen gegenüber Biokraftstoffen T2 - 13. Gefahrgut-Technik-Tage Verpackungen + IBC CY - Berlin, Germany DA - 2012-11-12 KW - Biokraftstoffe KW - Beständigkeit KW - Polyethylen KW - Verpackungen KW - Dichtungswerkstoffe PY - 2012 UR - http://www.storck-verlag.de/gtt/2012/09_weltschev.pdf SP - 1 EP - 48 PB - Storck AN - OPUS4-27135 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Vergleich der Prüfverfahren zur Bestimmung des mechanischen Leistungsniveaus von Polyethylenformstoffen für Gefahrgutverpackungen T2 - 14. Gefahrgut-Technik-Tage Berlin - Gefahrgutverpackungen, BAM CY - Berlin, Germany DA - 2013-11-11 PY - 2013 AN - OPUS4-29667 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Bewertung der Beständigkeit von metallischen Behälterwerkstoffen und polymeren Dichtungswerkstoffen unter dem Einfluss von Biokraftstoffen und Bioheizöl T2 - Seminarvorträge zu ausgewählten Kapiteln der Werkstofftechnik CY - Wuppertal, Germany DA - 2014-01-17 PY - 2014 AN - OPUS4-30024 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Werner, Jan A1 - Heming, Frank A1 - Haufe, Manuela T1 - Compatibility of sealing materials with biodiesel, bioethanol-gasoline and biodiesel-heating oil blends N2 - Biofuels including ethanol and biodiesel (fatty acid methyl ester) represent an impor-tant renewable fuel alternative to petroleum-derived transport fuels. Increasing bio-fuel use would bring some benefits, such as a reduction in oil demands and green-house gas emissions, and an improvement in air quality. Materials compatibility is a major concern whenever the fuel composition is changed in a fuel system. The aim of this work is to study the interaction between sealing materials such as FKM (fluorocarbon rubber), EPDM (ethylene-propylene-diene rubber), CR (chloro-prene rubber), CSM (chlorosulfonated polyethylene), NBR (acrylonitrile-butadiene rubber), IIR (butyl rubber), VMQ (methyl-vinyl-silicone rubber) and FVMQ (methyl-fluoro-silicone rubber) and biofuels such as biodiesel, E85 (fuel with 85% ethanol) and B10 (heating oil with 10% biodiesel) at 70°C for 84 days. Experiments were con-ducted with tests specimens of theses elastomers to document the changes in the mass and tensile properties of these sealing materials according to ISO 1817. The exposure tests of the elastomers in E85 at 70°C showed that the weight gain caused by swelling of the test specimens was in the range of 3% to 12%. However, the weight gain of the fluorinated elastomers was at the lower end of this range. Tensile strength and breaking elongation decreased by 22% to 61% or 13% to 77%. The lowest decrease in the tensile properties was determined for FKM, EPDM und IIR. These sealing materials were evaluated as resistant to E85 up to a temperature of 70°C. Biodiesel absorbed water more quickly and aged faster than conventional diesel fuel. The weight loss of the elastomers varied between 9% (FKM) and 126% (CSM) in biodiesel. FKM was evaluated as resistant with a 16% reduction in tensile strength, a 2% reduction in breaking elongation and low weight loss. NBR, EPDM, CSM and VMQ were evaluated as not resistant. CSM even lost 84% of its original tensile strength and 78% of its breaking elongation. The highest weight gain as a result of swelling was measured for CSM with 86%, for EPDM with 84% and for VMQ with 54% in B10, while the fluorine-containing elasto-mers FKM (1%) and FVMQ (3%) absorbed much less B10 and swelled less. FKM lost 23% in tensile strength and 17% in breaking elongation; FMVQ lost 29% in ten-sile strength and 36% in breaking elongation. FMVQ was, therefore, only limited in its resistance to B10. The elastomers NBR, EPDM, CSM and VMQ were not resistant to B10 at all as the decrease in the tensile properties was significantly over 50%. NBR lost about 93% and CSM about 100% of its breaking elongation. The conclusion of the investigations at 70°C is that FKM is the most resistant sealing material in biodiesel, E85 (fuel with 85% ethanol) and B10 (heating oil with 10% biodiesel). T2 - EUROCORR 2013 - The European corrosion congress CY - Estoril, Portugal DA - 01.09.2013 KW - Compatibility KW - Sealing materials KW - Biodiesel KW - E85 KW - B10 KW - Mass loss KW - Tensile properties PY - 2013 SN - 978-989-8601-31-5 SP - 1 EP - 6 AN - OPUS4-29150 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Werner, Jan A1 - Heming, Frank A1 - Haufe, Manuela T1 - Compatibility of sealing materials with biodiesel, bioethanol-gasoline and biodiesel-heating oil blends T2 - European Corrsosion Congress 2013 CY - Estoril, Portugal DA - 2013-09-01 PY - 2013 AN - OPUS4-29131 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Kohl, Anka A1 - Otremba, Frank T1 - Oxidative damage of an Intermediate Bulk Container (IBC) made of polyethylene by 53 % nitric acid T2 - European Corrosion Congress 2013 CY - Estoril, Portugal DA - 2013-09-01 PY - 2013 AN - OPUS4-29132 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Beständigkeit von metallischen Werkstoffen und polymeren Dichtungswerkstoffen unter dem Einfluss von Biokraftstoffen T2 - 14. netinforum Gewässer- und Explosionsschutz CY - Ludwigsburg, Germnany DA - 2014-07-01 PY - 2014 AN - OPUS4-30947 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Werner, Jan A1 - Heming, Frank A1 - Jochems, Frank T1 - Compatibility of sealing materials with biofuels, biodiesel-heating oil blends and premium grade fuel at different temperatures N2 - Biofuels including ethanol and biodiesel (fatty acid methyl ester) represent an important renewable fuel alternative to petroleum-derived transport fuels. Increasing biofuel use would bring some benefits, such as a reduction in oil demands and greenhouse gas emissions, and an improvement in air quality. Materials compatibility is a major concern whenever the fuel composition is changed in a fuel system. The question arises of whether sealing materials are resistant to fuels with bioethanol and biodiesel (rapeseed oil fatty acid methyl ester). The aim of this work is to study the interaction between sealing materials such as FKM (fluorocarbon rubber), EPDM (ethylene-propylene-diene rubber), CR (chloroprene rubber), CSM (chlorosulfonated polyethylene), NBR (acrylonitrile-butadiene rubber), IIR (butyl rubber), VMQ (methyl-vinyl-silicone rubber), FVMQ (methyl-fluoro-silicone rubber) and PA (polyamide) and biofuels such as biodiesel (FAME, non-aged and 2 years aged), E85 (fuel with 85% ethanol) and B10 (heating oil with 10% biodiesel, non-aged and one year aged) compared with premium-grade fuel at 20°C, 40°C and 70°C for 84 days. Exposure experiments were conducted with specimens of these elastomers to document the changes in the mass and tensile properties of these sealing materials. Visual examination of some test specimens clearly showed a great volume increase until breakage or partial dissolution. The sealing materials FVMQ, VMQ and PA were evaluated as resistant in E85 at 20°C and 40°C with a reduction of tensile properties limited to 15%. None of the examined materials was evaluated as resistant at 70°C with even fluorocarbon rubber losing 20% of its tensile strength in E85. When exposed to biodiesel, elastomers were affected in two ways: firstly, by absorption of liquid by the elastomers and, secondly, by dissolution of soluble components from the elastomers into the liquid medium. Swelling was the result of the high absorption by the elastomers CR, CSM, EPDM, IIR and NBR in comparison to their dis-solution in non-aged and two years aged biodiesel. FKM, VMQ and PA were evaluated as resistant sealing materials in non-aged biodiesel at 40°C. FKM was still resistant in aged biodiesel at 40°C but only to a limited degree at 70°C. The sealing materials CR, CSM, EPDM, IIR, NBR and VMQ were damaged to a high extent in non-aged and one year aged B10 as a result of swelling up to 70°C. FVMQ and PA can be evaluated as resistant in non-aged and one year aged B10 at 20°C and 40°C. However, FKM was evaluated as resistant up to 70°C. The exposure tests showed that all the elastomers tested were resistant in the premium-grade fuel Super at 20°C. On increasing the temperature to 40°C, only FKM, VMQ and PA were resistant to Super. At 70°C FKM showed the best resistance. T2 - EUROCORR 2014 - European corrosion congress CY - Pisa, Italy DA - 08.09.2014 KW - Compatibility KW - Sealing materials KW - Biofuels KW - Mass loss KW - Change in tensile properties PY - 2014 SN - 978-3-89746-159-8 SP - 1 EP - 13 AN - OPUS4-31427 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Heming, Frank A1 - Jochems, Frank A1 - Werner, Jan T1 - Compatibility of sealing materials with biofuels, biodiesel-heating oil blends and premium grade fuel at different temperatures T2 - EUROCORR 2014 CY - Pisa, Italy DA - 2014-09-08 PY - 2014 AN - OPUS4-31418 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Niebergall, Ute T1 - Comparison of the stress crack resistance of polyethylene grades with the test performance behaviour of packagings for the transport of dangerous goods N2 - Resistance to stress cracking by wetting solution is one of the selected properties together with the corresponding test method FNCT and tolerances for a comparison of polyethylene grades of one design type in the procedural rule on suitability proof for alternative plastic resins used for packagings and intermediate bulk containers (IBCs) for the transport of dangerous goods. The environmental stress crack resistance determined by Full Notch Creep Test (FNCT) represents the impacts from the stacking tests at 40 °C performed with standard liquid wetting solution (without pre-storage) and with normal butyl acetate saturated wetting solution (pre-storage with normal butyl acetate). Environmental stress crack resistance determined with FNCT for the polyethylene grades was related to the times to failure of different jerrican samples made of these grades in stacking tests with 5% wetting solution and a n-butyl acetate saturated wetting solution (pre-storage with n-butyl acetate) at 40 °C. The FNCT is suitable for comparison of polyethylene grades in relation to environmental stress crack resistance independent of their use as drum, IBC or jerrican material. The stiffness of polyethylene grades should be taken into account to the comparison as jerricans are not only chemically but also mechanically stressed. T2 - EUROCORR 2010 CY - Moscow, Russia DA - 2010-09-13 KW - Polyethylenformstoffe KW - Gefahrgutverpackungen KW - Spannungsrissbeständigkeit KW - Stapeldruckprüfungen PY - 2010 N1 - Serientitel: EFC-Event – Series title: EFC-Event IS - 324 SP - 1 EP - 6 PB - DECHEMA CY - Moscow AN - OPUS4-21974 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Correlation between material parameters of high density polyethylene grades and the test performance behavior of packagings T2 - NACE International corrosion conference 2009 CY - Atlanta, Georgia, USA DA - 2009-03-22 KW - Dangerous goods packagings KW - HDPE grades KW - Material parameters KW - Design type tests PY - 2009 SP - 1 EP - 13 (Paper 09328) AN - OPUS4-19257 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Correlation between material parameters of polyethylene grades and the test performance behaviour of packagings T2 - NACE 2009 CY - Atlanta, GA, USA DA - 2009-03-22 PY - 2009 AN - OPUS4-19292 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Vergleich der Materialeigenschaften von Polyethylenformstoffen mit dem Baumusterverhalten von Gefahrgutverpackungen; Übertragbarkeit von Kennwerten T2 - 12. Gefahrgut-Technik-Tage Berlin, BAM CY - Berlin, Germany DA - 2009-11-12 PY - 2009 AN - OPUS4-20390 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Deuerler, F. T1 - Comparison of the resistance to oxidative degradation of polyethylene grades with the test performance behavior of packagings for the transport of dangerous goods T2 - NACE International Corrosion Conference 2010 CY - San Antonio, Texas, USA DA - 2010-03-14 KW - Dangerous goods packagings KW - Polyethylene grades KW - Resistance to oxidative degradation KW - Design type tests KW - FTIR spectroscopy PY - 2010 SP - 10044-1 - 10044-13 AN - OPUS4-21089 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Vergleich der Materialeigenschaften von Polyethylenformstoffen mit dem Baumusterverhalten von Gefahrgutverpackungen T2 - Seminar: Ausgewählte Kapitel der Sicherheitstechnik/Materialkunde, Werkstoffe und Fertigungstechnik der Bergischen Universität Wuppertal, Fachbereich D, Abt. Maschinenbau CY - Wuppertal, Germany DA - 2010-01-15 PY - 2010 AN - OPUS4-21099 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Datenbank Gefahrgut - aktuelle Funktionalitäten für den Bereich Verpackung sowie geplanter Ausbau T2 - Ausgewählte Kapitel der Sichrheitstechnik/Materialkunde, Werkstoffe und Fertigungstechnik der bergischen Universität Wuppertal, Fachbereich D, Abt. Maschinenbau CY - Wuppertal, Germany DA - 2010-01-15 PY - 2010 AN - OPUS4-21100 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Weltschev, Margit A1 - Deuerler, F. ED - Suter, G. ED - de Rademaeker, E. T1 - Comparison of material parameters of polyethylene grades and the test performance behaviour of packagings for the transport of dangerous goods T2 - 13th International symposium on loss prevention and safety promotion in the process industries CY - Brugge, Belgium DA - 2010-06-06 KW - HDPE-Formstoffe KW - Werkstoffkennwerte KW - Spannungsrissbeständigkeit KW - Verpackungen KW - Baumusterprüfung PY - 2010 SN - 978-90-76019-291 VL - 02 SP - 383 EP - 386 CY - Brugge, Belgium AN - OPUS4-21451 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Bäßler, Ralph ED - Wieland, H.-J. T1 - Use of higher-alloyed metallic materials and duplex steels for transport tanks of dangerous goods N2 - Compatibility evaluations of selected metallic materials under the influence of dangerous goods are published in the BAM-List - Requirements for Tanks for the Transport of Dangerous Goods” as basis for substance-related prototype approvals for tank Containers designed for the carriage of dangerous goods. There is a request of the tank manufacturing industry and transportation Companies to incorporate additional materials into the BAM-List, especially corrosionresistant materials because of the large number of corrosive dangerous goods. One solution to solve corrosion Problems is to line the tank with a polymeric material, an alternative solution is the application of high-alloyed stainless steels and nickel-based alloys as there are alloy 926 (1.4529), alloy 31 (1.4562) and alloy 59 (2.4605). But there is an interest to use cost-efficient steels with high strength values and concomitant adequate corrosion resistance such as duplex Steel 1.4362 too. This Steel grade was originally developed as a substitute for the austenitic grades 1.4404 and 1.4571. Due to the lower content of the alloy elements nickel and molybdenum this duplex steel is a cost-efficient alternative to molybdenum containing austenite. Due to the limited number of corrosion test results with welded test samples of these high-alloyed materials and the duplex steel under the influence of corrosive dangerous goods a comprehensive test Programme was performed with these materials in Cooperation with ThyssenKrupp VDM and Deutsche Edelstahlwerke GmbH. It can be concluded from the test results that the "superaustenitic steels” 1.4529 and 1.4562 as well as the nickel-based alloy 2.4605 are a really good alternative as tank materials for the transport of dangerous goods in comparison to the lining of the tanks. Due to the reduced alloying content, in particular Nickel (3.7 %) and Molybdenum (0.15 %), a lower resistance of the duplex steel 1.4362 compared to the austenitic CrNiMo-steels was observed in acidic media. The duplex Steel is an alternative to the austenitic steels, especially in alkaline media. The test results are included in the current 10th edition of the BAM-List and therefore available for the costumer. T2 - SCT2011 - 3rd International conference on steels in cars and trucks CY - Salzburg, Austria DA - 06.05.2011 KW - BAM-List KW - Corrosion resistance KW - Dangerous goods KW - Duplex steels KW - Superaustenitic steels KW - Nickel alloy PY - 2011 SN - 978-3-514-00783-3 SP - 29 EP - 37 PB - Stahleisen AN - OPUS4-23859 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Deuerler, Frederike T1 - Comparsion of the notched impact strength at - 30 °C of polyethylene grades with the test performance behavior of packagings for the transport of dangerous goods N2 - The notched impact strength at -30 °C is one of the selected properties, together with the corresponding test method and tolerances, for a comparison of polyethylene grades of one design type in the procedural rule on suitability proof for alternative plastic resins used for packagings and intermediate bulk containers (IBCs) for the transport of dangerous goods. The marginal drop heights determined with the drop test at -18 °C after pre-storage of the test samples with 55 % nitric acid at 40 °C only partly related to the notched impact strength at -30 °C. The Charpy method is only suitable for classifying the grade in relation to toughness behavior and using this classification for comparison with other grades. Notched impact strength can provide a qualitative indication if the test samples fail under shock forces. Conditioning the design types with 55 % nitric acid for 21 days at 40 °C causes an increase in the marginal drop heights of the design types in drop tests at -18 °C when compared with design types without pre-storage. Post-crosslinking of the grades increases stiffness because of the acidic influence. T2 - NACE Konferenz CY - Houston, TX, USA DA - 13.03.2011 PY - 2011 AN - OPUS4-23377 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Deuerler, F. T1 - Comparison of the notched impact strength at -30°C of polyethylene grades with the test performance behavior of packagings for the transport of dangerous goods N2 - The notched impact strength at -30 °C is one of the selected properties, together with the corresponding test method and tolerances, for a comparison of polyethylene grades of one design type in the procedural rule on suitability proof for alternative plastic resins used for packagings and intermediate bulk containers (IBCs) for the transport of dangerous goods. The marginal drop heights determined with the drop test at -18 °C after pre-storage of the test samples with 55 % nitric acid at 40 °C only partly related to the notched impact strength at -30 °C. The Charpy method is only suitable for classifying the grade in relation to toughness behavior and using this classification for comparison with other grades. Notched impact strength can provide a qualitative indication if the test samples fail under shock forces. Conditioning the design types with 55 % nitric acid for 21 days at 40 °C causes an increase in the marginal drop heights of the design types in drop tests at -18 °C when compared with design types without pre-storage. Post-crosslinking of the grades increases stiffness because of the acidic influence. T2 - NACE International Corrosion Conference 2011 CY - Houston, TX, USA DA - 13.03.2011 KW - Dangerous goods packagings KW - Polyethylene grades KW - Notched impact strength at -30°C KW - Design type tests KW - Pre-storage with nitric acid PY - 2011 SP - 1 EP - 11 (Paper 11373) AN - OPUS4-23386 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Comparison between material parameters of polyethylene grades and the test performance behaviour of packagings for the transport of dangerous goods T2 - IPRI 2011 CY - Berlin, Germany DA - 2011-05-16 PY - 2011 AN - OPUS4-23661 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Niebergall, Ute T1 - Comparsion of the stress crack resistance of polyethylene grades with the test performance behaviour of packagings for the transport of dangerous goods T2 - EUROCORR 2010 - The European Corrosion Congresss CY - Moscow, Russia DA - 2010-09-13 PY - 2010 AN - OPUS4-22169 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Weltschev, Margit T1 - Comparison between material parameters of polyethylene grades and the test performance behaviour of packaging for the transport of dangerous goods N2 - For the characterization and the comparison of polyethylene grades used for the manufacture of packaging and intermediate bulk container, the following parameters are required: melt flow rate (MFR), density (D), low-temperature notched impact strength, full notch creep test (FNCT) and increase of MFR by molecular degradation (resistance to oxidative degradation). The relationship between these material parameters determined on the basis of specimens prepared from compression-moulded sheets of polyethylene grades and the test behaviour of packaging has been investigated in several tests. The environmental stress crack resistance determined by FNCT represents the impacts from the stacking tests performed with standard liquid wetting solution (without pre-storage) and with normal butyl-acetate-saturated wetting solution (pre-storage with normal butyl acetate). Resistance to molecular degradation by the determination of MFR increase is related to the impacts in drop tests and stacking tests performed after pre-storage for 21 days with standard liquid 55% nitric acid at 40°C. The low-temperature impact strength is directly comparable with the impacts in drop tests at -18°C performed without pre-storage and after pre-storage with 55% nitric acid. A partly good relationship was found between the test results and the material parameters. Conditioning the design types with 55% nitric acid for 21 days causes an increase in the marginal drop heights of the design types in drop tests at -18°C when compared with design types without pre-storage. Post-cross-linking of the grades increases stiffness because of the acidic influence. KW - Dangerous goods packaging KW - Polyethylene grades KW - Material parameters KW - Design-type tests PY - 2011 DO - https://doi.org/10.1002/pts.940 SN - 0894-3214 VL - 24 IS - 6 SP - 361 EP - 371 PB - Wiley CY - Chichester, UK AN - OPUS4-23756 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Weltschev, Margit T1 - Untersuchungen zur Beständigkeit von Dichtungswerkstoffen unter dem Einfluss von Kraftstoffen und Heizöl mit biogenen Anteilen T1 - Investigations on the resistance of sealing materials under the influence of fuels and heating oil with biogenic components N2 - Ziel dieser Untersuchungen war die Bewertung der Beständigkeit häufig eingesetzter Dichtungswerkstoffe, wie FKM, FVMQ, VMQ, EPDM, CR, CSM, IIR, PA, NBR und PUR in Kraftstoffen und Heizöl mit und ohne biogene Zusätze bei 20 °C, 40 °C und 70 °C. E10, E85, Dieselkraftstoff mit max. 5 % Biodiesel, ungealtertes und 2 Jahre gealtertes B10 (Heizöl mit 10 % Biodiesel), reiner Dieselkraftstoff, Heizöl und Kraftstoff Super plus zählten zu den Testsubstanzen. Masse, Zugfestigkeit und Bruchdehnung wurden von den Prüfkörpern vor und nach der 84-tägigen Auslagerung in den Kraftstoffen und Heizöl bestimmt. Die visuelle Begutachtung einiger Elastomerprüfkörper zeigte eindeutig die hohe Quellung bis zur partiellen Auflösung. Die Shore-Härte A und D (für PA) der Prüfkörper wurden vor und nach der 42-tägigen Auslagerung in den Kraftstoffen bestimmt. In den internationalen Normen wird zur Bewertung der Beständigkeit von Elastomeren kein Grenzwert der Reduzierung der Zugeigenschaften und der Shore-Härte definiert. Deshalb wurde für die Beständigkeitsbewertung ein Grenzwert von 15 % festgelegt. Zusammenfassend kann die Aussage getroffen werden, dass die Beständigkeit der Fluorpolymere FKM und FVMQ in den Kraftstoffen und Heizöl mit und ohne biogene Zusätze die beste ist. KW - Shore-Härte KW - Dichtungswerkstoffe KW - Beständigkeit KW - Kraftstoffe mit und ohne biogene Anteile KW - Biodiesel KW - E10 KW - Zugeigenschaften PY - 2016 DO - https://doi.org/10.3139/120.110931 SN - 0025-5300 VL - 58 IS - 10 SP - 894 EP - 899 PB - Carl Hanser Verlag GmbH & Co. KG CY - München AN - OPUS4-37868 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Werkstoffverträglichkeit von Behältern für die Beförderung gefährlicher Güter N2 - Die BAM-Liste - Anforderungen an Tanks für die Beförderung gefährlicher Güter – mit den Beständigkeitsbewertungen metallischer und polymerer Werkstoffe ist Grundlage für die stoffbezogenen Baumusterzulassungen für Tankcontainer und ortsbewegliche Tanks zur Beförderung gefährlicher Güter durch die BAM seit der Herausgabe der 1. Auflage 1989. Diese Beständigkeitsbewertungen werden nicht nur bundesweit, sondern weltweit als Erkenntnisquelle genutzt. Für die Zulassung von Kesselwagen und Tankfahrzeugen werden diese Daten auch herangezogen. Die Werkstoffbeständigkeitsdaten und der damit verbundene Informationsservice der BAM haben mit Sicherheit dazu beigetragen, Leckagen von Tanks aufgrund des Einsatzes von Tanks/Kesselwagen aus einem gegenüber dem Füllgut unbeständigem Tankwerkstoff oder Dichtungswerkstoff zu vermeiden. T2 - 25. Berlin-Brandenburger Gefahrguttage CY - Berlin, Germany DA - 07.11.2016 KW - Beständigkeitsbewertung KW - Tankwerkstoffe KW - Gefahrguttransport PY - 2016 AN - OPUS4-38153 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Kohl, Anka A1 - Haufe, Manuela T1 - Compatibility of polyethylene grades with biofuels and biodiesel-heating oil blends N2 - 8iofuels including ethanol and biodiesel (fatty acid methyl ester) represent an important renewable fuel alternative to petroleum-derived transport fuels. lncreasing biofuels use would bring some benefits, such as a reduction in oil demands and greenhause gas emissions, and an improvement in air quality. T2 - EUROCORR 2015 - European corrosion congress CY - Graz, Austria DA - 06.09.2015 KW - Compatibility KW - Polyethylene grades KW - Biofuels KW - Change in MFR and tensile properties PY - 2015 SP - Paper 16_1074, 1 EP - 11 AN - OPUS4-34203 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Werner, Jan A1 - Jochems, Frank A1 - Heming, Frank T1 - Change in properties of sealing materials in biofuels, biodiesel-heating oil blends, diesel and premium grade fuel at different temperatures N2 - Materials compatibility is a major concern whenever the fuel composition is changed in a fuel system. Therefore frequently used sealing materials such as FKM (fluorocarbon rubber), FVMQ (methyl-fluoro-silicone rubber), VMQ (methyl-vinyl-silicone rubber), EPDM (ethylene-propylene-diene rubber), CR (chloroprene rubber), CSM (chlorosulfonated polyethylene), IIR (butyl rubber), PA (polyamides), N8R (acrylonitrile-butadiene rubber) and PUR (polyester urethane rubber) were exposed to E1 0, diese I fuel with 5% biodiesel, non-aged and 2 year aged 810 (heating oil with 10% biodiesel), and for comparison to pure diese! fuel, standard heating oil and Super plus without bioethanol at 20 °C, 40 oc and 70 oc for 84 days. Mass, tensile strength and breaking elongation of the test specimens were determined before and after the exposure. The visual examination of some elastomer test specimens clearly showed the great volume increase until break or partial dissolution. Shore hardness A and D (for PA) were determined before and after exposure of the test specimens to the biofuels for 42 days. There is not determined a threshold for the reduction in tensile properties and Shore hardness in the international standards. Therefore a threshold of 15% was determined for the evaluation of the compatibility. The sealing materials FKM, EPDM, N8R, FMVQ, CSM and PA were evaluated on the basis of this threshold as resistant in E1 0 at 20 oc and 40 °C. FKM, FVMQ and PA were resistant at 40 oc , and none of the materials were resistant at 70 °C. FKM and FVMQ absorbed much less 810 and swelled less. CR, CSM, EPDM, IIR, N8R and VMQ were not resistant to 810 at all at 20 oc, 40 oc and 70 oc as the decrease in the tensile properties was significantly over 50%. FVMQ and PA could be evaluated as resistant in non-aged and two year aged 810 at 20 oc and 40 oc, whereas FKM was resistant up to 70 °C. FKM, PA and PUR were evaluated as resistant in standard heating oil and pure diese! fuel at temperatures up to 40°C, only FKM was resistant up to 70°C. FVMQ, FKM, N8R, VMQ, CR and IIR can be evaluated as resistant in premium grade fuel Super plus without ethanol at 20 oc. FKM, FVMQ, VMQ and IIR were still resistant at 40 °C. FKM and FVMQ were evaluated as resistant with restrictions at 70 °C. ln summary, it can be therefore stated that the chemical resistance of the fluoropolymers FKM and FVMQ in fuels and biofuels is the best one. T2 - EUROCORR 2015 - European corrosion congress CY - Graz, Austria DA - 06.09.2015 KW - Compatibility KW - Sealing materials KW - Biofuels KW - Tensile properties KW - Shore hardness PY - 2015 SP - Paper 16_173, 1 EP - 11 AN - OPUS4-34204 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Werner, Jan A1 - Jochems, Frank A1 - Heming, Frank T1 - Change in properties of sealing materials in biofuels, biodiesel-heating oil blends, diesel and premium grade fuel at different temperatures T2 - EUROCORR 2015 CY - Graz, Österreich DA - 2015-09-06 PY - 2015 AN - OPUS4-34547 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Kohl, Anka A1 - Haufe, Manuela T1 - Compability of polyethylene grades with biofuels and biodiesel-heating oil blends T2 - EUROCORR 2015 CY - Graz, Östereich DA - 2015-09-06 PY - 2015 AN - OPUS4-34551 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Bewertung der Beständigkeit von metallischen Behälterwerkstoffen und polymeren Dichtungswerkstoffen unter dem Einfluss von Biokraftstoffen und Bioheizöl T2 - ausgewählte Kapitel der Werkstofftechnik CY - Bergische Universität Wuppertal DA - 2015-01-16 PY - 2015 AN - OPUS4-32458 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Bewertung der Beständigkeit von metallischen Werkstoffen und polymeren Dichtungswerkstoffen unter dem Einfluss von Biokraftstoffen T2 - Fachtagung: Neuerungen im Gewässerschutz CY - Neumünster DA - 2015-02-26 PY - 2015 AN - OPUS4-33095 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Kohl, Anka A1 - Haufe, Manuela A1 - Heyer, Martina T1 - Compatibility of polyethylene grades with biofuels and biodiesel-heating oil blends T2 - CORROSION 2015 CY - Dallas, USA DA - 2015-03-15 PY - 2015 AN - OPUS4-32908 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Heming, Frank A1 - Haufe, Manuela A1 - Heyer, Martina T1 - Compatibility of sealing materials with biofuels and biodiesel-heating oil blends T2 - CORROSION 2015 CY - Dallas, USA DA - 2015-03-15 PY - 2015 AN - OPUS4-32909 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Change in properties of sealing materials in biofuels, biodiesel-heating oil blends, diesel and premium grade fuel at different temperatures N2 - The objective of this research was to determine the resistance of frequently used sealing materials such as FKM, FVMQ, VMQ, EPDM, CR, CSM, IIR, PA, NBR and PUR in fuels and heating oil with and without admixtures of biogenic sources such as E10, diesel fuel with 5 % biodiesel, non-aged and 2 year aged B10 (heating oil with 10 % biodiesel), pure diesel, standard heating oil and premium grade fuel Super plus at 20 °C, 40 °C and 70 °C. Mass, tensile strength and breaking elongation of the test specimens were determined before and after the exposure for 84 days in the fuels. The visual examination of some elastomer test specimens clearly showed the great volume increase until break or partial dissolution. Shore hardness A and D (for PA) were determined before and after exposure of the test specimens in the biofuels for 42 days. There is not determined a threshold for the reduction in tensile properties and Shore hardness in the international standards. Therefore a threshold of 15 % was determined for the evaluation of the compatibility. In summary, it can be therefore stated that the chemical resistance of the fluoropolymers FKM and FVMQ in fuels and biofuels is the best one. T2 - Oil & Gas Non-Metallics 2016 CY - London, UK DA - 12.12.2016 KW - Sealing materials KW - Biofuels KW - Premium grade fuels KW - Change in tensile properties KW - Change in shore hardness PY - 2016 AN - OPUS4-38705 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Werkstoffverträglichkeit von Behältern für die Beförderung gefährlicher Güter N2 - Die BAM-Liste - Anforderungen an Tanks für die Beförderung gefährlicher Güter – mit den Beständigkeitsbewertungen metallischer und polymerer Werkstoffe ist Grundlage für die stoffbezogenen Baumusterzulassungen für Tankcontainer und ortsbewegliche Tanks zur Beförderung gefährlicher Güter durch die BAM seit der Herausgabe der 1. Auflage 1989. Diese Beständigkeitsbewertungen werden nicht nur bundesweit, sondern weltweit als Erkenntnisquelle genutzt. Für die Zulassung von Kesselwagen und Tankfahrzeugen werden diese Daten auch herangezogen. Die Werkstoffbeständigkeitsdaten und der damit verbundene Informationsservice der BAM haben mit Sicherheit dazu beigetragen, Leckagen von Tanks aufgrund des Einsatzes von Tanks/Kesselwagen aus einem gegenüber dem Füllgut unbeständigem Tankwerkstoff oder Dichtungswerkstoff zu vermeiden. T2 - Ausgewählte Kapitel der Werkstofftechnik - Werkstoffe und Fertigungstechnik CY - Wuppertal, Germany DA - 13.01.2017 KW - Werkstoffbeständigkeit KW - Tankwerkstoffe KW - Dichtungswerkstoffe KW - BAM-Liste KW - Datenbank Gefahrgut PY - 2017 AN - OPUS4-38974 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Schwarzer, Stefanie A1 - Eiben, Mario T1 - Comparison of the environmental stress cracking behaviour of polyethylene and polyethylene terephthalate as materials for dangerous goods packagings N2 - The chemical industry has expressed great interest in using polyethylene terephthalate (PET) as material for packagings for the transport of dangerous goods. Due to the high strength and stiffness of PET, the wall thickness and weight of packagings can be reduced. This is a relevant cost factor. PET is a semi-crystalline thermoplast which is produced by polycondensation of terephthalic acid and ethylene glycol. According to the European dangerous goods regulations RID and ADR, samples of PET design types of packagings for dangerous goods must be pre-stored with the original filling good for six months at 23°C, before the design type tests can be carried out. For packagings made of polyethylene (PE) tests to prove the stress cracking resistance by using laboratory methods are possible to reduce time and costs. Therefore, standard liquids, simulating the different types of damaging effects on PE are defined in RID and ADR. However, there is no information and research available about the damaging mechanisms on PET in comparison to PE, especially regarding to stress cracking resistance and test methods. The aim of this work is to compare the stress cracking resistance of PE and PET with the Full Notch Creep Test (FNCT), which was developed by chemical industry and is described in the standards EN ISO 16101 and EN 15507. It was investigated whether testing specimens made of PE and PET with a full coplanar notch around the middle of the specimens show weakening after the impact of a tensile force in a wetting solution (Lutensol® FSA 10) at 50°C in a test device on the basis of the FNCT. The test results confirmed the suitability of the method for eight PE grades. Unfortunately, this method couldn’t be used for PET because the specimens broke during notching. In addition the molding of the sheets and the following temper process for twelve hours are very time-consuming, and the specimens broke during notching due to the high brittleness of PET. Another possibility to provide evidence of stress cracking resistance of PE packagings is laid down in BAM’s Dangerous Goods Rule BAM-GGR 015. This test was carried out with PE and PET bottles to compare both materials. Therefore 1l test bottles were filled with a 5% wetting solution and mounted with a clamping tool for 28 days at 40°C. Tensile test specimens were cut out afterwards from the middle of the bottles in the deformed areas. Tensile strength and breaking elongation of PE specimens were determined in comparison to the PET specimens. The tensile properties of the PET specimens couldn’t be determined due to the strength and the stiffness of the material. In conclusion the only way to provide information about the stress cracking resistance of PET was to perform stacking tests. 1l bottles made of PE and PET were filled with a 5% wetting solution and stored with a stacking load for 28 days at 40°C according to EN ISO 16495. Design types of PE and PET both passed the stacking tests. T2 - EUROCORR 2016 CY - Montpellier, France DA - 11.09.2016 KW - polyethylene terephthalate KW - stress cracking resistance KW - test methods KW - dangerous goods packagings PY - 2016 AN - OPUS4-37448 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Schwarzer, Stefanie T1 - Vergleich der Spannungsrissbeständigkeit von Polyethylen und Polyethylenterephthalat als Werkstoffe für Verpackungen zum Transport von Gefahrgütern N2 - Seitens der Industrie besteht großes Interesse, Polyethylenterephthalat (PET) als Werkstoff für Verpackungen zum Transport von Gefahrgütern einzusetzen, da aufgrund der hohen Festigkeit und Steifigkeit von PET die Wanddicken und somit die Kosten der Verpackungen reduziert werden können. Die Prüfung der Spannungsrissbeständigkeit von Polyethylenformstoffen als Werkstoffe von Verpackungen erfolgt mit Labormethoden unter Verwendung einer Standardflüssigkeit als Prüfmedium für die Spannungsrisse auslösende Wirkung auf Polyethylen (PE), wodurch Zeit und Kosten der Prüfungen reduziert werden. Ziel dieser Arbeit war es, eine Laborprüfmethode zum Vergleich der Spannungsrissbeständigkeit von PE und PET auf ihre Anwendbarkeit zu prüfen, wie z.B. den Full Notch Creep Test (FNCT). Es wurde untersucht, ob die Prüfkörper aus PE und PET mit umlaufender Kerbe in dieser durch die chemische Industrie entwickelten und von der BAM konzipierten Apparatur auf der Basis des FNCT zu messbaren Ergebnissen unter Einfluss eines Ölsäureamidethoxylates als Netzmittel bei 50 °C führen. Die Testergebnisse bestätigten die Eignung des Prüfverfahrens für die acht eingesetzten Formstoffe aus PE. Dieses Prüfverfahren konnte nicht für PET angewandt werden, da die Prüfkörper aufgrund der hohen Festigkeit und Steifigkeit des PET beim Kerbvorgang zerbrachen. Die gleiche Aussage konnte für den Nachweis der der Spannungsrissbeständigkeit von Verpackungen, der in der BAM Gefahrgutregel BAM-GGR 015 beschrieben wird, getroffen werden. Die einzige Möglichkeit zum Nachweis der Spannungsrissbeständigkeit von PET besteht in der Durchführung von Stapeldruckprüfungen. T2 - 29. Sitzung des BAM AK Prüfstellen CY - Berlin, Germany DA - 19.09.2016 KW - Polyethylenterephthalat KW - Spannungsrissbeständigkeit KW - Nachweisverfahren KW - Gefahrgutverpackungen PY - 2016 AN - OPUS4-37434 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Weltschev, Margit T1 - Biokraftstoffe und Dichtungen N2 - Zusammenfassend wird aufgrund der Ergebnisse der durchgeführten Untersuchungen die Aussage getroffen, dass die Fluorpolymere FKM und FVMQ die beständigsten Dichtungswerkstoffe in Biokraftstoffen und Heizöl B10 im Temperaturbereich bis 70 °C sind. In E10 und E85 kann keiner der Dichtungswerkstoffe bei 70 °C als beständig bewertet werden. Diese Erkenntnisse können vielen Wirtschaftszweigen ein Innovationspotential bieten und ihre Wettbewerbsfähigkeit steigern. KW - Dichtungswerkstoffe KW - Beständigkeit KW - Biokraftstoffe PY - 2016 SN - 1614-7200 SP - 96 EP - 98 PB - publish-industry Verlag GmbH CY - München AN - OPUS4-37428 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Heming, Frank A1 - Haufe, Manuela A1 - Heyer, Martina T1 - The influence of the age of biodiesel and B10 on the resistance of sealing materials at different temperatures N2 - Materials compatibility is a major concern whenever the fuel composition is changed in a fuel system. The question arises of whether sealing materials are resistant to fuels with bioethanol and biodiesel (rapeseed oil fatty acid methyl ester). The objective of this research was to determine the resistance of frequently used sealing materials such as FKM (fluorocarbon rubber), FVMQ (methyl-fluoro-silicone rubber), VMQ (methyl-vinyl-silicone rubber), EPDM (ethylene-propylene-diene rubber), CR (chloroprene rubber), CSM (chlorosulfonated polyethylene), IIR (butyl rubber), PA (polyamides), NBR (acrylonitrile-butadiene rubber) and PUR (polyester urethane rubber) in aged fuels and heating oil with admixtures of biogenic substances such as biodiesel and B10 (heating oil with 10% biodiesel). The mass, tensile strength and breaking elongation of the test specimens were determined before and after exposure for 84 days in non-aged, one-year, two-year, three-year and four-year aged biodiesel and B10 according to DIN 53504 – “Testing of rubber - determination of tensile strength at break, tensile stress at yield, elongation at break and stress values in a tensile test”. The visual examination of some elastomer test specimens clearly showed the great volume increase until breaking or partial dissolution. The Shore hardnesses A and D (for PA) were determined before and after exposure of the test specimens in the biofuels for 42 days according to DIN 53505 – “Testing of rubber – Shore A and Shore D hardness test”. 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. Biodiesel fuels are easily oxidized and contain acids and water. 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. FKM and PA showed high compatibility in non-aged, one-year, two-year, three-year and four- year aged biodiesel, which was attributed to the absence of polarity. The decrease in tensile properties and Shore hardness increased with the age and the temperature of the biodiesel, but the measured values were still lower than the defined threshold. FKM and FVMQ absorbed much less non-aged and aged B10 and swelled less. CR, CSM, EPDM, IIR, NBR and VMQ were not resistant to B10 at all at 20°C, 40°C and 70°C as the decrease in the tensile properties was significantly over 50%. 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 the age of the B10. The damaging impact of B10 increased with the age and the temperature. T2 - EUROCORR 2016 CY - Montpellier, France DA - 11.09.2016 KW - Sealing materials KW - Compatibility evaluation KW - Biofuels KW - Tensile properties KW - Shore hardness PY - 2016 AN - OPUS4-37430 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Weltschev, Margit A1 - Schwarzer, Stefanie T1 - Vergleich der Spannungsrissbeständigkeit von Polyethylen und Polyethylenterephthalat als Werkstoffe für Verpackungen zum Transport von Gefahrgütern T1 - Comparison of the environmental stress cracking behavior of polyethylene and polyethylene terephthalate as materials for dangerous goods packagings N2 - Seitens der Industrie besteht großes Interesse, Polyethylenterephthalat (PET) als Werkstoff für Verpackungen zum Transport von Gefahrgütern einzusetzen, da aufgrund der hohen Fes-tigkeit und Steifigkeit von PET die Wanddicken und somit die Kosten der Verpackungen reduziert werden können. Die Prüfung der Spannungsrissbeständigkeit von Polyethylenformstoffen als Werkstoffe von Verpackungen erfolgt mit Labormethoden unter Verwendung einer Standardflüssigkeit als Prüfmedium für die Spannungsrisse auslösende Wirkung auf Polyethylen (PE), wodurch Zeit und Kosten der Prüfungen reduziert werden. Ziel dieser Arbeit war es, eine Laborprüfmethode zum Vergleich der Spannungsrissbeständigkeit von PE und PET auf ihre Anwendbarkeit zu prüfen, wie z.B. den Full Notch Creep Test (FNCT). Es wurde untersucht, ob die Prüfkörper aus PE und PET mit umlaufender Kerbe in dieser durch die chemische Industrie entwickelten und von der BAM konzipierten Apparatur auf der Basis des FNCT zu messbaren Ergebnissen unter Einfluss eines Ölsäureamidethoxylates als Netzmittel bei 50 °C führen. Die Testergebnisse bestätigten die Eignung des Prüfverfahrens für die acht eingesetzten Formstoffe aus PE. Dieses Prüfverfahren konnte nicht für PET angewandt werden, da die Prüfkörper aufgrund der hohen Festigkeit und Steifigkeit des PET beim Kerbvorgang zerbrachen. Die gleiche Aussage konnte für den Nachweis der der Spannungsrissbeständigkeit von Verpackungen, der in der BAM Gefahrgutregel BAM-GGR 015 beschrieben wird, getroffen werden. Die einzige Möglichkeit zum Nachweis der Spannungsrissbeständigkeit von PET besteht in der Durchführung von Stapeldruckprüfungen. N2 - The chemical industry has expressed great interest in using polyethylene terephthalate (PET) as material for packagings for the transport of dangerous goods. Due to the high strength and stiffness of PET, the wall thickness and the costs of packagings can be reduced. For packaging made of polyethylene (PE), tests to prove the stress cracking resistance used laboratory methods with a standard liquid, simulating the stress cracking effect on PE. These tests reduce time and costs. The aim of this work was to find a laboratory method to compare the stress cracking resistance of PE and PET, such as the full notch creep test (FNCT). It was investigated whether testing specimens made of PE and PET with a full coplanar notch around the middle of the specimens show weakening after the impact of a tensile force in solution of an oleic amide ethoxylate at 50 degrees C in a test device on the basis of the FNCT, which was developed by the chemical industry and designed by BAM. The test results confirmed the suitability of the method for eight PE grades. This method could not be used for PET because the specimens broke during notching due to the high stiffness and strength. The same statement applies for the proof of stress cracking resistance of PE packagings according to "Dangerous Goods Rule BAM-GGR 015" defined by BAM. In conclusion, the only way to provide information about the stress cracking resistance of PET is to perform stacking tests. KW - Gefahrgutverpackung KW - Spannungsrissbeständigkeit KW - Polyethylen KW - Polyethylenterephthalat KW - FNCT KW - Stapeldruckprüfung PY - 2017 DO - https://doi.org/10.3139/120.110966 SN - 0025-5300 VL - 59 IS - 1 SP - 29 EP - 34 PB - Carl Hanser Verlag GmbH & Co. KG CY - München AN - OPUS4-38926 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -