Production and properties of highly oriented polyoxymethylene by die-drawing

Highly oriented monofilaments were produced by a high‐temperature die‐drawing process followed by tensile drawing. It was shown that a successful high‐speed process required high‐quality melt‐extruded rod. The mechanical properties and structure of the die‐drawn products were investigated by means o...

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Bibliographic Details
Published in:Journal of applied polymer science 2003-05, Vol.88 (5), p.1268-1278
Main Authors: Taraiya, A. K., Mirza, M. S., Mohanraj, J., Barton, D. C., Ward, I. M.
Format: Article
Language:English
Subjects:
Applied sciences
chain
die-drawing
Exact sciences and technology
Fibers and threads
Forms of application and semi-finished materials
mechanical properties
oriented polymers
Polymer industry, paints, wood
polyoxymethylene
Technology of polymers
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Summary:Highly oriented monofilaments were produced by a high‐temperature die‐drawing process followed by tensile drawing. It was shown that a successful high‐speed process required high‐quality melt‐extruded rod. The mechanical properties and structure of the die‐drawn products were investigated by means of tensile and bending tests, dynamic mechanical measurements, DSC, and X‐ray diffraction. The bending modulus and the tensile strength increased with increasing draw ratio. It was also observed that at high draw ratios the γ‐dispersion peak in the dynamic mechanical tan δ curve, which is associated with main chain micro‐Brownian motion in the amorphous regions, diminishes, implying that these chains become taut. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 88: 1268–1278, 2003
ISSN:0021-8995
1097-4628
DOI:10.1002/app.11848