Organic coatings degrade as a result of thermal oxidation, photo-initiated oxidation or by chemical attack. Silicon based inorganic coatings are much more resistant to these degradation mechanisms and Polysiloxane coatings offer significantly enhanced durability when compared to Polyurethane coatings. Polysiloxane coatings must however be modified to the right extent with organic resins to enable other coating performance properties such as flexibility, toughness, adhesion to primers and cost to be obtained while at the same time not detracting from the Polysiloxane properties.

This paper discusses Polysiloxane Topcoats together with the level and type of organic modification necessary to optimise coating systems performance in corrosive environments.

Subject
Films, Test methods, Primers, Coating performance, Silicones, Zinc rich epoxies, Creep, Zinc, Epoxies, Urethane, Chemical reactions, Durability, Acrylics
© 2002 Association for Materials Protection and Performance (AMPP). All rights reserved. This work is protected by both domestic and international copyright laws. 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).
2002
Association for Materials Protection and Performance (AMPP)
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