Polybenzimidazole (PBI) polymers are known for their outstanding thermal and chemical stability. PBI is now available in molded form. The physical and thermal properties of this material are briefly described. The chemical resistance of molded PBI, which was evaluated after immersion in a wide range of materials at various temperatures for up to 30 days, is also described. Molded PBI offers excellent resistance to most of the chemicals tested. Exceptions are hot solvents for the base polymer and hot aqueous strong acids. No effect was observed upon exposure to common oil and gas production environments. The excellent chemical and thermal resistance of molded PBI was confirmed in actual field trials, where it has out performed a variety of other high temperature materials.

Subject
Compressive strength, Materials, Materials performance, Moduli, Valves, Chemical resistance, Polymers, Fluids, Swelling, Immersion, Steam, Thermoplastics, High temperature
© 1989 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).
1989
Association for Materials Protection and Performance (AMPP)
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