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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

  • 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 °CThe 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.zeige mehrzeige weniger

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  • Comparsion of the notched impact strength.pdf
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Metadaten
Autor*innen:Margit Weltschev, F. Deuerler
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Graue Literatur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):NACE International corrosion conference 2011 (Proceedings)
Jahr der Erstveröffentlichung:2011
Herausgeber (Institution):The National Association of Corrosion Engineers (NACE)
Erste Seite:1
Letzte Seite:11 (Paper 11373)
Freie Schlagwörter:Dangerous goods packagings; Design type tests; Notched impact strength at -30°C; Polyethylene grades; Pre-storage with nitric acid
Veranstaltung:NACE International Corrosion Conference 2011
Veranstaltungsort:Houston, TX, USA
Beginndatum der Veranstaltung:13.03.2011
Enddatum der Veranstaltung:17.03.2011
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:19.02.2016
Referierte Publikation:Nein
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