Wall slip and viscous heating effects on the flow of polypropylene/EP rubber blend in capillary rheometer

Sang Yoon Kang, Krishnamurthy Jayaraman

Research output: Contribution to journalArticle

  • 3 Citations

Abstract

The wall slip flow behavior has been determined for a blend of polypropylene with EP rubber. Experiments and simulations are used to analyze the capillary flow data obtained from the several dies of different diameters. Mooney plots drawn from this data are strongly curved. This is attributed to viscous heating effects and to a more complex slip velocity relation for the blend. The relevant mass, momentum, and energy equations for flow of a power-law fluid through a capillary are solved numerically to incorporate the combined effects of slip and viscous heating, for fitting the capillary flow data.

LanguageEnglish (US)
Pages370-374
Number of pages5
JournalJournal of Industrial and Engineering Chemistry
Volume8
Issue number4
StatePublished - 2002

Profile

Capillary flow
Polypropylenes
Rheometers
Rubber
Heating
Momentum
Fluids
Experiments

Keywords

  • Mooney plot
  • PP/EP blend
  • Viscous heating
  • Wall slip

ASJC Scopus subject areas

  • Engineering (miscellaneous)

Cite this

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AB - The wall slip flow behavior has been determined for a blend of polypropylene with EP rubber. Experiments and simulations are used to analyze the capillary flow data obtained from the several dies of different diameters. Mooney plots drawn from this data are strongly curved. This is attributed to viscous heating effects and to a more complex slip velocity relation for the blend. The relevant mass, momentum, and energy equations for flow of a power-law fluid through a capillary are solved numerically to incorporate the combined effects of slip and viscous heating, for fitting the capillary flow data.

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