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The extension viscosity increases for five examined greases above an individually different border area of the rate of extension. The maximum of the extension length could be measured. The formed fibres obtain substantial higher stretch almost close to the extension rate at which the extension viscosity starts to increase. It is suggested that there is a relation between the normal stress in shear tests and the tendency to form long fibres by drag.
Rocznik
Tom
Strony
813--822
Opis fizyczny
Bibliogr. 2 poz., tab., wykr.
Twórcy
autor
- University of Applied Science Dresden Friedrich List Platz 1, D-01069 Dresden, GERMANY
autor
- University of Applied Science Dresden Friedrich List Platz 1, D-01069 Dresden, GERMANY
autor
- University of Applied Science Dresden Friedrich List Platz 1, D-01069 Dresden, GERMANY
Bibliografia
- [1] Brenner H. (1974): Rheology of a dilute suspension of axisymmetric Brownian particles. - Int. J. Multiphase Flow, vol.l, pp. 195-341.
- [2] Spiegelberg S.H. and McKinley G.H. (1996): The role of end-effects on measurements of extensional viscosity in filament stretching rheometers. - J. Non-Newton. Fluid Mech., vol.67, pp.49-76.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPZ2-0001-0039