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  • Polymer and Materials Science  (1)
  • 75.30G
  • PACS. 75.30.Et Exchange and superexchange interactions - 75.30.Kz Magnetic phase boundaries (including magnetic transitions, metamagnetism, etc.) - 75.40.Cx Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.)
  • Pisum
  • 1985-1989  (1)
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  • 1
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: The principles of fibre formation in the wet spinning process are investigated by means of rheological measurements. The 1st normal stress difference of technologically important shear rates is determined from the die swell of a freely emerging viscose jet. Moreover, the Barus swell of a viscose jet extruded into spinning bath as well as the rheological strength as a function of the spin-draw ratio of the filament were determined. The load-elongation diagram resulting from the deformation of the jet is shown to be essential for the stability of the spinning process.
    Notes: Grundlagen der Fadenbildung beim Naßspinnprozeß werden an Hand rheologischer Messungen untersucht. Dazu wird die 1. Normalspannungsdifferenz für betrieblich relevante Schergeschwindigkeiten aus der Strahlaufweitung eines frei austretenden Viskosestrahls ermittelt. Des weiteren werden die Barusaufweitung eines in ein Spinnbad extrudierten Viskosestrahls sowie die rheologische Kraft in Abhängigkeit von Verzug des Fadens bestimmt und das aus der Strahlverformung resultierende Beanspruchungs-Dehnungs-Diagramm als wesentlich für die Spinnstabilität begründet.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
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