Determining melt flow index on-line using a helical barrel rheometer

C. Wan, C. Lu, D. B. Todd, L. Zhu, V. Tan, M. W. Young, C. G. Gogos

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

A new approach and a technique has been proposed and developed to measure the melt flow index (MFI) using a Helical Barrel Rheometer (HBR), the portable on-line viscosity measuring instrument. The HBR can be fed on-line from a melt slip stream, or off-line with pellets. The viscosity is calculated from the pressure measurement and rotor speed, without measurement of the torque or the flow rate. The measured viscosities are representative of flows within the processing equipment, from which not only an MFI value can be calculated and monitored but also a spectrum of viscosity data over a wide range of shear rates can be obtained in a semi-continuous manner.

Original languageEnglish (US)
Title of host publicationSociety of Plastics Engineers - 66th Annual Technical Conference of the Society of Plastics Engineers, Plastics Encounter at ANTEC 2008
Pages223-227
Number of pages5
StatePublished - 2008
Event66th Annual Technical Conference of the Society of Plastics Engineers, Plastics Encounter at ANTEC 2008 - Milwaukee, WI, United States
Duration: May 4 2008May 8 2008

Publication series

NameTechnical Papers, Regional Technical Conference - Society of Plastics Engineers
Volume1

Other

Other66th Annual Technical Conference of the Society of Plastics Engineers, Plastics Encounter at ANTEC 2008
CountryUnited States
CityMilwaukee, WI
Period5/4/085/8/08

All Science Journal Classification (ASJC) codes

  • Industrial and Manufacturing Engineering
  • Materials Chemistry
  • Polymers and Plastics

Keywords

  • Helical barrel rheometer
  • Melt flow index
  • Polypropylene
  • Viscosity

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