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Peculiarities of mechanical response of heavily filled polypropylene composites

Part I Elastic modulus

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Abstract

A concentration dependence of a dynamic storage E′ c modulus was investigated for polypropylene filled with microfibrous magnesium hydroxide, Mg(OH)2. The non-monotonous shape of E against filler volume fraction dependence was explained as a consequence of the filler agglomeration.

A simple stochastical model for the dependence of an agglomerate size on the filler volume fraction was developed. A qualitative agreement was obtained between experimental data and proposed theory. A critical filler volume fraction, when an “infinite” agglomerate origins, was determined from the model as well as from percolation conception to be around v critf = 0.2.

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Authors and Affiliations

  1. Chemopetrol, Research Institute of Macromolecular Chemistry, Tkalcovska 2, 65649, Brno, Czech Republic

    J. Jancar & J. Kucera

  2. State Textile Research Institute, 66471, Veverska Bityska, Czech Republic

    P. Vesely

Authors
  1. J. Jancar
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  2. J. Kucera
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  3. P. Vesely
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Additional information

On leave at The University of Connecticut, Institute of Materials Science, U-136, 97 North Eagleville Road, Storrs, CT 06268, USA.

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Jancar, J., Kucera, J. & Vesely, P. Peculiarities of mechanical response of heavily filled polypropylene composites. J Mater Sci 26, 4878–4882 (1991). https://doi.org/10.1007/BF00549864

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  • DOI: https://doi.org/10.1007/BF00549864

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