Influence of different interphases on the mechanical properties of fiber-reinforced polymers

  • H. Frenzel
  • E. Mäder
Part of the Progress in Colloid & Polymer Science book series (PROGCOLLOID, volume 101)


In this study the interphase properties of glass fiber polypropylene model composites have been investigated using sized glass fibers with amino silane as coupling agent and varied polymer dispersions as film formers and unmodified (PP) or acidic modified polypropylene (PPM). The interphase was tested by direct melt wetting measurement and single-fiber pull-out tests. The mechanical composite properties influenced by fiber-melt interaction were tested at continuous fiber-reinforced polypropylenes. The direct fiber/melt wetting experiments provide evidence of chemical reactions together with interdiffusion effects in the interphase between sized glass fibers and the modified polypropylene matrices. It was proved that these physical and chemical interactions influence the interfacial shear strength and the macromechanical properties. Differences in the interfacial shear strength were caused by the wetting kinetics due to the different film former formulation.

Key words

Composites interphase polypropylene glass fibers mechanical properties 


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  1. 1.
    Ishida H (1984) Polym Composites 5:101CrossRefGoogle Scholar
  2. 2.
    Grundke K, Jacobasch H-J, Simon F, Schneider St (1995) J Adhesion Sci Technol 9:327CrossRefGoogle Scholar
  3. 3.
    Mäder E, Grundke K, Jacobasch H-J, Wachinger G (1994) Composites 25:739CrossRefGoogle Scholar
  4. 4.
    Mäder E, Bunze U, Hofmann H, Wulff D Germ Pat applied for June 4, 1993Google Scholar
  5. 5.
    Grundke K, Uhlmann P, Giezelt Th, Jacobasch H-J Colloids & Surfaces, submitted for publicationGoogle Scholar
  6. 6.
    Mäder E, Grundke K, Jacobasch H-J, Panzer U Proc 31. Internat Man-made fibre congress, Dornbirn, Austria, Sept 23–25, 1992Google Scholar
  7. 7.
    Mäder E, Grundke K, Janke A Proc Workshop on interfaces in carbon, glass and polymer fibre reinforced composites, Kaiserslautern, Febr 1–2, 1995, pp 32–43Google Scholar

Copyright information

© Steinkopff Verlag 1996

Authors and Affiliations

  • H. Frenzel
    • 1
  • E. Mäder
    • 1
  1. 1.Institute of Polymer Research DresdenDresdenFRG

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