Data/hora: 13/06/2024 11:04:18

Provedor de dados: | 5
País: | France
Título: | Life time prediction of polymer used as thermal insulation in offshore oil production conditions: Ageing on real structure and reliability of prediction
Autores: | Le Gac, Pierre-yves; Choqueuse, Dominique; Melot, D.; Melve, B.; Meniconi, L.
Data: | 2014-04
Ano: | 2014
Palavras-chave: | Polyurethane; Life time prediction; Hydrolysis; Offshore; Thermal insulation; Durability.
Resumo: | Polymers are widely used for passive thermal insulation coatings on steel pipe in offshore oil and gas production. In this industry, structures used in deep sea have to be reliable as they are in service for more than 20 years in a very severe environment: sea water, hydrostatic pressure, temperature. One of the main questions is how to test and predict the lifetime of such structures in the laboratory. This study presents one approach that has been developed to characterize and predict the degradation of polyurethanes used as thermal insulation materials.  Based on results obtained during accelerated ageing of the PU in sea water, a prediction of degradation through the thickness has been set up taking into account the temperature profile in the coating, water absorption and hydrolysis. Validity of this model has been investigated by comparing predictions with experimental data obtained on a real structure that has been aged for more than a year with an internal temperature up to 125°C in water under hydrostatic pressure. Using this prediction, the effect of different parameters (such as coating thickness, internal and external temperature) on the degradation level of a structure has been examined.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/00174/28572/26957.pdf

DOI:10.1016/j.polymertesting.2014.01.011

Editor: | Elsevier Sci Ltd
Relação: | http://archimer.ifremer.fr/doc/00174/28572/
Formato: | application/pdf
Fonte: | Polymer Testing (0142-9418) (Elsevier Sci Ltd), 2014-04 , Vol. 34 , P. 168-174
Fonte: | 2014 Elsevier Ltd. All rights reserved.