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Die Viskosität und die Fließgrenze von Schmierfetten wurde im Bereich von 20 °C bis –40 °C untersucht. Die Temperaturabhängigkeit beider Größen folgt einem Arrhenius‐Gesetz. Die Temperaturabhängigkeit der Viskosität der Grundöle wird durch eine WLF‐Gleichung beschrieben und ist deutlich stärker ausgeprägt. Die Eignung von Schmierfetten wird über die Zugehörigkeit zu einer NLGI‐Klasse beurteilt, die...
Elongational flow behavior of w/o emulsions has been investigated using a capillary breakup elongational rheometer (CaBER) equipped with an advanced image processing system allowing for precise assessment of the full filament shape. The transient neck diameter D(t), time evolution of the neck curvature κ(t), the region of deformation ldef and the filament lifetime tc are extracted in order to...
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