Publication detail

Effect of ceramic nanopowders on rheology of thermoplastic suspensions

TRUNEC, M. HRAZDĚRA, J.

Original Title

Type

journal article - other

Language

English

Original Abstract

Rheological behaviour of thermoplastic polymer melts containing 20 to 50 vol.% of ceramic nanopowders was studied. For the preparation of thermoplastic polymer suspensions three ZrO2 powders with specific surface areas from 6.5 to 123 m2 g-1 were used. Using a capillary rheometer, viscous behaviour was examined in the temperature range from 100 to 150 degC and in the shear rate range from 100 to 1000 s-1. The viscosity of suspensions increased with increasing specific surface area of ceramic powder. The suspensions were of pseudoplastic nature, which was described by the power law. The power law exponent and the activation energy of viscous flow of suspensions decreased almost linearly with increasing specific surface area of the powder. The maximum volume fraction of the powder in the suspension also decreased with increasing specific surface area of the powder. The causes of the changes in viscous behaviour of the suspensions in dependence on the specific surface area of powders were discussed.

Keywords

mixing, ZrO2, thermoplastic suspension, rheology

Authors

TRUNEC, M.; HRAZDĚRA, J.

RIV year

2005

Released

1. 1. 2005

Publisher

Elsevier Science

ISBN

0272-8842

Periodical

Ceramics International

Year of study

Number

State

United Kingdom of Great Britain and Northern Ireland

Pages from

845

Pages to

849

Pages count

URL

ScienceDirect

BibTex

@article{BUT46394,
  author="Martin {Trunec} and Jiří {Hrazděra}",
  title="Effect of ceramic nanopowders on rheology of thermoplastic suspensions",
  journal="Ceramics International",
  year="2005",
  volume="31",
  number="6",
  pages="5",
  issn="0272-8842",
  url="ScienceDirect"
}