Abstract
For the last few years, an oil company has carried out laboratory testing of tri-layers PE and PP pipe coatings in hot wet environment.
The objective was to simulate the disbondment from the steel substrate noted in some cases in the field (with no corrosion associated), and understand the physico-chemical mechanism at the origin of the loss of adhesion experienced.
This paper will sum up the results obtained so far from this RD effort, with a special highlight on the following points :
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Durability of the bond between the steel and the FBE primer/Influence of water diffusion
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Influence of the FBE type and ageing temperature on the disbondment
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Influence of internal stresses on the disbondment of three layers coatings.
© 2010 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
2010
Association for Materials Protection and Performance (AMPP)
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