Fusion bonded epoxy (FBE) powder coatings are being specified and used more and more each year to coat the exterior of pipe ranging in diameter from 3/4 inch to 60 inches. This is undoubtedly due to their excellent ability to mitigate corrosion and minimize current draw on cathodically protected pipe for long periods of time. Also, there are increasing amounts of FBE powder coatings being used to coat internal pipe surfaces as well. This has produced a need for timely quality control at coatings facilities as well as a need to accurately predict longevity of the coating systems by the pipe owner. Currently a portion of this need is satisfied by Differential Thermal Analysis (DTA) /Differential Scanning Calorimetry (DSC) techniques. Another extremely important need - specifically the determination of adequate cure on the coatings line - is addressed but suffers greatly due to the time required for the technique. This paper will attempt to explain the results obtained and their implications when analyzing the virgin powder as well as the typical analysis of shavings from coated pipe.

Subject
Coating removal, Water, Materials, Piping, Electrochemical cells, Heaters, Thermal degradation, Thermocouples, Fusion bonded epoxy coating, Polymers, Heat, Powders, Samples
© 1983 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).
1983
Association for Materials Protection and Performance (AMPP)
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