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Polyoxymethylene (POM) Materials



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Polyoxymethylene (POM)



Polyoxymethylene (POM) materials are those materials containing POM resins.  (RDC 5/16/2012)


“Polyoxymethylene (POM, also known as polyacetal) has excellent tribological characteristics, hardness, stiffness, moderate toughness, low coefficient of friction, good solvent resistance, and the ability to crystallize rapidly, making polyoxymethylene resin compositions useful for preparing articles for use in many demanding applications. However, during melt-processing, polyoxymethylenes can degrade and release formaldehyde. For this reason, formaldehyde evolution, measured as thermally evolved formaldehyde (TEF) is often used to determine the heat stability of polyoxymethylene compositions. Other methods for assessing the heat stability of polyoxymethylene include the measurement of weight loss in air over aging at elevated temperatures for prolonged periods, such as 500 to 1000 hrs and the observation of degradative coloration of the resin compositions using the Yellowness index, as defined in ASTM E313-73 (D 1925).” [Shinohara and Shibuya, US Patent 8,138,2247 (3/20/2012)]


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Roger D. Corneliussen

Maro Polymer Links
Tel: 610 363 9920
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Copyright 2012 by Roger D. Corneliussen.
No part of this transmission is to be duplicated in any manner or forwarded by electronic mail without the express written permission of Roger D. Corneliussen

* Date of latest addition; date of first entry is 5/16/2012.