Advanced technology high performance tank linings are often applied by plural spray equipment and occasionally one of the components could be off-ratio. Worse still, some well-intentioned field personnel might add more curing agent to speed up the cure, or alter other properties, or may not utilize the entire curing agent portion in a single leg application.

This paper investigates the effects of under-cure or over-cure on the performance of two high temperature tank linings by deliberately mis-mixing the two components.

Accelerated laboratory tests were undertaken on a 2ct thin film solvented polycyclamine cured epoxy and a 1ct solvent-free, thick film polycyclamine cured epoxy. The tests employed were autoclave (TM0185) at high temperature in oilpatch production fluids, electrochemical impedance spectroscopy (EIS), adhesion, solvent resistance, infra-red spectroscopy, differential scanning calorimetry (DSC), and dry time observations.

Subject
Films, Protective coatings, Water, Autoclaves, Solvents, Chemical resistance, Epoxy coatings, Linings, Epoxy linings, Dry film thickness, Epoxies, Dry to touch, Curing agents
© 2016 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).
2016
Association for Materials Protection and Performance (AMPP)
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