A feasibility study on the application of several kinds of rapid cure coating system to water ballast tank was conducted in terms of curing characteristics and coating performance. The coating systems employed in this study were three types of solvent free rapid cure epoxy coatings, an isocyanate curable polyurethane coating and a polyurea coating system. Polyurethane and polyurea coating were especially formulated for sea water ballast tank service. Based on the study of curing characteristics and coating performance of the polyurethane and polyurea coating system, it was found that lower adhesion strength of the coatings over power tool treated surface and lower surface profile was the result suggesting that additional primer application is needed in order to obtain required adhesion strength. Moreover corrosion resistance of the fast cure coatings especially in water immersion was inferior to that of the required epoxy coatings.

Subject
Primers, Water, Coatings, Substrates, Isocyanates, Cracking resistance, Epoxy coatings, Coating adhesion, Polyurethane coatings, Corrosion resistance, Epoxies, Blistering, Coating systems
Keywords:
rapid cure, isocyanate, polyurethane, polyurea, adhesion, crack resistance, corrosion creep
© 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)
You do not currently have access to this content.