Abstract
A glass fibre (GF)/polypropylene (PP) commingled yarn was selected to investigate the relationship between impregnation mechanisms and processing conditions during consolidation. Furthermore a carbon fibre (CF)/polyetheretherketone (PEEK) commingled yarn was studied. Laminates out of these material forms were fabricated by hot pressing. Microscopy of cross-sections and density measurements helped to examine the quality of impregnation and consolidation.
Based on microscopic observations, an impregnation model for the qualitative description of the consolidation behaviour was generated. It can be used to describe variations in void content over laminate thickness as a function of bundle geometry and combinations of processing parameters. The relationship between processing temperature, holding time, and applied pressure, required to reach full consolidation, were evaluated.
Results of transverse flexure tests were used to correlate the mechanical properties with the impregnation quality. For each kind of material the optimum processing window for manufacturing of laminates could be suggested.
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© 1995 Springer Science+Business Media Dordrecht
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Klinkmüller, V., Kästel, R., Ye, L., Friedrich, K. (1995). On Impregnation Quality and Resulting Mechanical Properties of Compression Moulded Commingled Yarn Based Thermoplastic Composites. In: Pyrz, R. (eds) IUTAM Symposium on Microstructure-Property Interactions in Composite Materials. Solid Mechanics and Its Applications, vol 37. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-0059-5_16
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DOI: https://doi.org/10.1007/978-94-011-0059-5_16
Publisher Name: Springer, Dordrecht
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