Within any generic category of railcar exterior coatings, there are significant variations in performance. Therefore, testing is required to select coatings that give the highest performance. Use of outdoor exposure panels produces meaningful results but requires from months to years before results are obtained. Therefore, four common accelerated test methods were evaluated to determine how well their results correlate with the results obtained from outdoor exposure. Loss of gloss was the basis of comparison.

Subject
Test methods, Primers, Coating performance, Coatings, Materials, Gloss, Gloss retention, Epoxy coatings, Color, Alkyd coatings, Epoxies, Urethane, Alkyds
Keywords:
Outdoor exposure, accelerated testing, comparison tests, QUV tests, Weather-O-Meter, salt spray, weathering
© 1994 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).
1994
Association for Materials Protection and Performance (AMPP)
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