Study of stress cracking’s phenomenon in virgin and degraded polyethylene (PE) geomembranes / Estudo do fenômeno de fissuramento sob tensão (stress cracking) em geomembranas de polietileno (PE) virgens e degradadas

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

This work presents results of stress cracking tests (SC) accomplished in virgin and degraded polyethylene (PE) geomembranes at laboratory. Geomembranes were degraded by exposition to ultraviolet radiation, by thermal aging in oven with circulation of air, and by chemical compatibility with sodium hydroxide and with leachate of alcohol production. The results of these tests demonstrate that the degradation processes of the geomembranes were submitted can be considered catalysts of the phenomenon of SC, because they happened resistance reductions to stress crack resistance of the order from 50 to 60%, with exception for the sample in chemical compatibility with leachate of alcohol production, that had an increase of 17% in the stress crack resistance

ASSUNTO(S)

calor chemical compatibility degradation polyethylene ultraviolet radiation compatibilidade química radiação ultravioleta stress cracking geomembranas degradação fissuramento sob tensão polietileno geomembranes heat

ACESSO AO ARTIGO

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