Validation of an Alternative Method for Testing the Chemical Compatibility of Liquids with Polyethylene Packagings for Dangerous Goods
| Autor: | Thomas Goedecke, Andreas Menrad, Wolfgang Jahnke, Anita Schmidt, Mario Eiben |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Waste management Environmental stress cracking Mechanical Engineering Sample (material) General Chemistry Polyethylene Chemical compatibility chemistry.chemical_compound Cracking chemistry Forensic engineering Dangerous goods General Materials Science High-density polyethylene Wetting |
| Zdroj: | Packaging Technology and Science. 26:385-398 |
| ISSN: | 0894-3214 |
| Popis: | Safety risks may ensue when the chemicals contained in polyethylene packagingsa age and damage them. To prevent subsequent accidents, the European Dangerous Goods Regulations have laid down requirements for testing the chemical compatibility of liquid dangerous goods transported in polyethylene packagings. The test procedures include 6 months in which the chemical is prestored in the packaging. After this time, the respective design-type tests are performed. Alternative methods with so-called standard liquids, simulating the different types of damaging effects, are also possible. If a packaging has successfully passed the design type tests with a standard liquid, other dangerous goods may also be transported in this packaging, as long as it is demonstrated that they have a less damaging effect than the standard liquid. However, in this area there is only little information and research available. A new potentially effective and time-saving method for comparing the stress crack damaging influence of liquids with standard liquids was proposed by a major German chemical company. The validation of this method, which was carried out on two polyethylene materials, showed the general applicability of the method. Two kinds of wetting solutions were applied to simulate cracking under stress. The influence of prestorage, test temperatures, wetting agents and material was examined. FEM calculations were carried out to ascertain the influence of the sample shape. Copyright © 2012 John Wiley & Sons, Ltd. |
| Databáze: | OpenAIRE |
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