Abstract
The polypropylene melt viscosity dependence upon temperature, shear and molecular weight, and the molecular weight dependence upon temperature and time were measured and mathematically described. For the dependence of the melt viscosity upon temperature, shear and molecular weight (melt index), a master curve has been found. The influence of the progressive degradation of polypropylene during the extrusion upon the temperature, pressure and dissipated energy down-channel profiles is given.
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References
Münstedt, H., Kunststoffe 68, 92–98 (1978).
Marquardt, D. W., J. Soc. Indust. Appl. Math. 11, 431–441 (1963).
Zâvadsky, E., J. Karnis, V. Pechoc, Technical Report No. 25/80, Research Institute of Man-Made Fibres, Svit 1980.
Van der Vegt, A. K., Plast. Inst. Trans. J. 32, 165–169 (1964).
Ui, J., et al., SPE Trans. 4, 295–305 (1964).
Pechoc, V., Research Report No. 260. Research Institute of Man-Made Fibres, Svit 1968.
Vinogradov, G. V., N. N. Prozorovskaja, Rheol. Acta 3, 156–163 (1964).
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© 1982 Springer-Verlag Berlin Heidelberg
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Závadský, E., Karniš, J., Pechoč, V. (1982). The time, temperature and shear dependence of the viscosity of polypropylene and its influence upon the extrusion process. In: Giesekus, H., Kirschke, K., Schurz, J. (eds) Progress and Trends in Rheology. Steinkopff, Heidelberg. https://doi.org/10.1007/978-3-662-12809-1_29
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DOI: https://doi.org/10.1007/978-3-662-12809-1_29
Publisher Name: Steinkopff, Heidelberg
Print ISBN: 978-3-7985-0612-1
Online ISBN: 978-3-662-12809-1
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