TY - JOUR A1 - Weltschev, Margit A1 - Niebergall, Ute A1 - Werner, Jan T1 - Comparison of the material parameters of polyethalene grades with the test performance behaviour of packagings for the transport of dangerous goods in relation to the pre-storage time with 55% nitric acid JF - Packaging technology & science N2 - The material parameters melt flow rate (MFR), density (D), notched impact strength (NIS) at –30°C, stress crack resistance [determined with the Full Notch Creep Test (FNCT)] and resistance to oxidative degradation (Ox) have been selected for a comparison of polyethylene grades in the European standard EN 15507. These parameters have a relationship with design type tests of packagings for the transport of dangerous goods. This paper presents the results of additional investigations to determine the impact of the pre-storage time of jerricans with 55% nitric acid at 40°C and 23°C on the marginal drop heights in drop tests at –18°C, on the MFR and on the tensile properties. Jerricans made of different polyethylene grades were pre-stored with 55% nitric acid for 21, 42 and 84 days at 40°C and for six months at 23°C. The tests showed that the NIS values at –30°C of polyethylene grades were not comparable with marginal drop heights determined in drop tests at –18°C. Pre-damage with 55% nitric acid for 21 days at 40°C led to an increase in the marginal drop heights of the jerricans. Altering the test regulations by increasing pre-storage time with 55% nitric acid to 42 days would be an alternative. The test results demonstrated clearly that pre-storage of the jerricans for six months at 23°C caused a higher increase in the MFR and lower marginal drop heights for the jerricans when compared with pre-stored jerricans for 21 days at 40°C. KW - Polyethylene grades KW - Resistance to oxidative degradation KW - Nitric acid KW - Tensile properties KW - Packagings for the transport of dangerous goods KW - Drop tests PY - 2013 DO - https://doi.org/10.1002/pts.2037 SN - 0894-3214 VL - 27 SP - 409 EP - 421 PB - Wiley CY - Chichester, UK AN - OPUS4-28731 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -