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Consolidation of Glass Fibre-Polypropylene Towpregs by Compression Moulding
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Consolidation of Glass Fibre-Polypropylene Towpregs by Compression Moulding

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Abstract:

In this work a theoretical model describing the consolidation of glass fibrepolypropylene (GF/PP) towpregs into composites by compression moulding is studied. Such model relates the constant pressure applied by the press to the other processing operational (consolidation time and temperature) and material variables (fibre/polymer content and packing arrangement, matrix viscosity and powder and fibre dimensions). Compression tests were carried at different temperatures and constant press pressures on unidirectional GF/PP towpreg preforms. The experimentally determined displacement/time curves were compared to the model simulations assuming an isothermal consolidation and two different fibre/polymer packing arrangements, one triangular and the other hexagonal. The results obtained showed that the towpreg consolidation could be successfully predicted using the model under study.

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Advanced Materials Forum III View Preview

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Periodical:

Materials Science Forum (Volumes 514-516)

Pages:

677-681

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.514-516.677

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Online since:

May 2006

Authors:

João F. Silva, João Pedro Nunes, António Torres Marques

Keywords:

Compression Molding, Glass Fiber, Isothermal Consolidation, Modeling, Powder Coating Process, Thermoplastic Matrix Composites, Towpregs

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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