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毛细管流变仪应用
2013-02-28 17:17:32 益择发布MEASUREMENTS USING ZERO LENGTH DIE VERSUS BAGLEY CORRECTION
J. Sunder, A. Goettfert,
GOETTFERT, Germany
Abstract
As melt flows from the barrel of a capillary rheometer into
a die the streamlines converge, producing a strong
extensional flow. The entrance pressure loss is determined
with orifice die and Bagley correction. The failure of the
measurement with orifice die like outlet angle and length
of the die is evaluated and extensional viscosity is
calculated using the theory of Cogswell. The results of
extensional viscosity will be compared with Rheotens
elongation data.
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