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Article

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Title

Rheological properties of polypropylene composites with calcium carbonate under high shear rates

Authors

[ 1 ] Instytut Technologii i Inżynierii Chemicznej, Wydział Technologii Chemicznej, Politechnika Poznańska | [ 2 ] Instytut Technologii Materiałów, Wydział Inżynierii Mechanicznej, Politechnika Poznańska | [ P ] employee

Scientific discipline (Law 2.0)

[2.8] Materials engineering
[2.9] Mechanical engineering
[7.6] Chemical sciences

Year of publication

2023

Published in

Polimery

Journal year: 2023 | Journal volume: vol. 68 | Journal number: no. 7-8

Article type

scientific article

Publication language

english

Keywords
EN
  • polymer composites
  • injection molding
  • rheological properties
  • in-line rheology
PL
  • kompozyty polimerowe
  • wtryskiwanie
  • właściwości reologiczne
  • reologia in-line
Abstract

EN The rheological properties of isotactic polypropylene (iPP) and its composites with unmodified and stearic acid-modified calcium carbonate (5, 10, 20, 30 wt%) were investigated. The processability factor K of the composites was determined based on changes in the mass flow rate (MFR). The assessment of rheological properties was carried out at high shear rates, in the injection process, using a special in-line measuring head. Measurements were performed at a temperature of 230°C, in the range of apparent shear rate from 19,100 to 101,900 s-1, based on the Ostwald-de Waele power-law model. Comparative analysis of the processing and rheological characteristics, as determined with two techniques (off-line measurements and in-line measurements), has shown a diverse behaviour of polymer composites in flows (flow resistances, the behaviour of the flow and viscosity curves, the power law index), resulting from a varying fill degree, applied filler type and measuring shear rate range.

Pages (from - to)

403 - 412

DOI

10.14314/polimery.2023.7.6

URL

https://ichp.vot.pl/index.php/p/article/view/2338

Open Access Mode

open journal

Open Access Text Version

final published version

Date of Open Access to the publication

at the time of publication

Full text of article

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Access level to full text

public

Ministry points / journal

100

Impact Factor

1,6 [List 2022]

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