Surface preparation is a crucial factor to ensure good performance of coating system in an offshore environment. Both substrate cleanliness and surface profile (influence by the shape of abrasive) will improve the adhesion of the primer which has a direct influence on the performance of the coating system.

For a highly corrosive offshore environments the industry is specifying zinc rich primers for long service life. This paper will examine the performance of new, activated zinc rich epoxy primers compared to conventional zinc rich epoxy primers on steel prepared to different surface profiles using standard techniques used today.

Testing done has been the cyclic ageing according to ISO12944-9 (2018), blister box test according to ISO 6270-1 and the impact test according to ISO6272-1.

This testing will show the importance of surface preparation on the ability of the coating system to provide long term corrosion resistance in an offshore environment and on how the choice of zinc rich primer can improve tolerance to poor surface preparation and thus enhance the lifetime of the coating system.

Subject
Test methods, Primers, Zinc rich coatings, Zinc-rich primers, Metal surfaces, Roughness, Density, Surface preparation, Coating adhesion, Rust, Creep, Surface profile, Adhesion
Keywords:
Surface Preparation, Zinc Rich Primers, Maintenance
© 2021 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 (OR NACE OR SSPC). Responsibility for the content of the work lies solely with the author(s).
2021
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.