Fracture of high-density polyethylene used for bleach bottles
| Autor: | A. Colombo, Marco Contino, Giuliano Marra, Marta Rink, Luca Andena |
|---|---|
| Jazyk: | angličtina |
| Předmět: |
Polyethylene
Environmental Stress Cracking Fracture mechanics Bleach Materials science Environmental stress cracking 02 engineering and technology 021001 nanoscience & nanotechnology chemistry.chemical_compound Ingredient 020303 mechanical engineering & transports 0203 mechanical engineering chemistry Sodium hypochlorite High-density polyethylene Composite material 0210 nano-technology Stress intensity factor Earth-Surface Processes |
| Zdroj: | Procedia Structural Integrity. :213-220 |
| ISSN: | 2452-3216 |
| DOI: | 10.1016/j.prostr.2016.06.028 |
| Popis: | High-density polyethylene (HDPE) can be blow-molded and used for the production of bottles for aggressive products. These products can interact both chemically and physically with the polymer constituting these containers, leading to a decrease in the performance of the material and undermining the structural integrity of the component. A fracture mechanics approach was adopted to evaluate the Environmental Stress Cracking Resistance (ESCR) of two HDPE commercial grades used for bleach containers; two different solutions, with and without sodium hypochlorite (the main ingredient of commercial bleach solutions), were considered as aggressive environments. Size effects were studied using different test configurations and loading histories in air. The correlation between the stress intensity factor and the initiation time was found. A clear effect of the aggressive solutions on the fracture resistance of the two HDPEs was observed, irrespective of the presence of sodium hypochlorite; the effect therefore has to be ascribed to other bleach components. |
| Databáze: | OpenAIRE |
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