A Model-Based Approach for Determination of Product-Properties on Carbon-Black Loaded Polyethylenes

  1. Prof. Yves Bréchet
  1. Xiao-Su Yi1,2,
  2. Lie Shen1 and
  3. Yi Pan1

Published Online: 19 DEC 2005

DOI: 10.1002/3527606157.ch38

Microstructures, Mechanical Properties and Processes - Computer Simulation and Modelling, Volume 3

Microstructures, Mechanical Properties and Processes - Computer Simulation and Modelling, Volume 3

How to Cite

Yi, X.-S., Shen, L. and Pan, Y. (2000) A Model-Based Approach for Determination of Product-Properties on Carbon-Black Loaded Polyethylenes, in Microstructures, Mechanical Properties and Processes - Computer Simulation and Modelling, Volume 3 (ed Y. Bréchet), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527606157.ch38

Editor Information

  1. Institut Nat. Polytechnique de Grenoble, L.T.P.-C.M. ENSEEG, BP75, Domaine Universitaires, 38402 Saint Martin D'Hères Cedex, France; Tel.: 0033–76–82 6610; Fax: 0033–76–82 6644

Author Information

  1. 1

    Institute of Polymers and Processing (IPP), Zhejiang University, Hangzhou 310027, China

  2. 2

    National Key Laboratory of Advanced Composites (LAC), PO.Box 81-3, Beijing 100095, China

Publication History

  1. Published Online: 19 DEC 2005
  2. Published Print: 20 APR 2000

Book Series:

  1. EUROMAT 99

ISBN Information

Print ISBN: 9783527301225

Online ISBN: 9783527606153

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Keywords:

  • microstructures;
  • computer simulation;
  • product properties;
  • carbon-black loaded polyethylenes

Summary

The attention of this paper is primarily focused on the quantitative contribution of the thermal volume expansion to the non-linear PTC switch effect of fine particles filled polymer composites in the carbon black-polyethylene (CB-PE) binary system. A percolation curve of resistivity vs. filler volume fraction – the General Effective Medium (GEM) Equation – is first used to describe the mixing (adding) effect of the conductivity of composite. A dilution of the CB volume fraction due to the thermal volume expansion of the matrix is estimated and the real CB volume fractions of a certain loading level at different temperatures are thus found. Being treated equivalent to the loading levels, the “real” CB volume fractions at high temperatures are used to replace the volume fractions in the GEM Equation. The resistivity vs. temperature for a sample with the loading level is thus predicted. The experimental PTC curves for different loading levels were also investigated and the results are compared with the predicted ones.