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 - 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 - JOUR A1 - Weltschev, Margit T1 - Schuld an Korrosion PY - 2003 SN - 0016-5808 VL - 48 IS - 2 SP - 12 EP - 14 PB - Storck CY - Hamburg AN - OPUS4-2384 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Assessment of the Corrosion Resistance of Metallic Tank Materials in the BAM-List - Requirements for Tanks for the Transport of Dangerous Goods T2 - 27th International Exhibition-Congress on Chemical Engineering, Environmental Protection and Biotechnology, Abstract of the lecture groups, Materials Technology CY - Frankfurt am Main, Germany DA - 2003-05-19 PY - 2003 AN - OPUS4-3310 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Weltschev, Margit A1 - Alves, H. T1 - Tanks for all seasons KW - Beständigkeit KW - Höherlegierte Tankwerkstoffe KW - Gefahrgüter KW - BAM-Liste PY - 2004 SN - 0143-6864 IS - August SP - 18 EP - 19 PB - Intrapr. Ltd. CY - London AN - OPUS4-4422 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Einsatz von höherlegierten Sonderedelstählen und Nickelbasislegierungen im Tankbau T2 - Gefahrgut-Technik-Tage Berlin 2002 CY - Berlin, Germany DA - 2002-11-14 PY - 2002 AN - OPUS4-3682 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Innovative korrosionsbeständige höherlegierte Tankwerkstoffe T2 - 7. Gefahrgut-Technik-Tage (GTT) CY - Berlin, Deutschland DA - 2004-11-25 PY - 2004 VL - 7 SP - 52 EP - 60 PB - Storck CY - Hamburg AN - OPUS4-4844 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Innovative korrosionsbestätige höherlegierte Tankwerkstoffe T2 - Gefahrgut-Technik-Tage - Innovative Tanktechnik, Risiken, Normung, Entwicklunen CY - Berlin, Germany DA - 2004-11-25 PY - 2004 AN - OPUS4-4875 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Assessment of the corrosion resistance of metallic tank materials in the BAM-list - Requirements for tanks for the transport of dangerous goods T2 - 27th International Exhibition-Congress on Chemical Engineering, Environmental Protection and Biotechnology ; 27th ACHEMA 2003 CY - Frankfurt am Main, Germany DA - 2003-05-19 PY - 2003 SP - 183 PB - DECHEMA, Ges. für Chemische Technik und Biotechnologie CY - Frankfurt am Main AN - OPUS4-2535 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Weltschev, Margit T1 - Stichwort "Korrosion": Die Bewertungskriterien für die Beständigkeit von metallischen Tankwerkstoffen PY - 2003 IS - März SP - 4 PB - HOYER GmbH CY - Hamburg AN - OPUS4-2548 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -