The glass transition temperature (Tg) is an important property, as it is a reflection of both the type of resins in a coating and its degree of cure. This paper discusses what Tg is, the measurement of Tg, and its relationship to coating performance. Data is presented which indicates that the performance of a coating may depend on the conditions under which it is cured, such that the exact same coating may perform differently depending on the region of the country in which it is used and the time of year in which it is applied.

Subject
Test methods, Coating performance, Coatings, Curing, Glass transition temperature, Molecular weight, Epoxy coatings, Polyamides, Polymers, Amines, Glass transition, Elongation, Epoxies
© 2006 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).
2006
Association for Materials Protection and Performance (AMPP)
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