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Fibers 2017, 5(3), 26; doi:10.3390/fib5030026

Commingled Yarn Spinning for Thermoplastic/Glass Fiber Composites

Leibniz-Institut für Polymerforschung Dresden e.V., Dresden D-01069, Germany
Author to whom correspondence should be addressed.
Academic Editor: Stephen C. Bondy
Received: 25 April 2017 / Revised: 10 July 2017 / Accepted: 17 July 2017 / Published: 20 July 2017
(This article belongs to the Special Issue Glass Fibers)
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Online commingled yarns were spun with three different polymeric matrices, namely polypropylene (PP), polyamide (PA) and polylactic acid (PLA) and glass fibers. Tailored sizings were applied for the three matrices and the resulting mechanical performance of unidirectional composites was evaluated and compared. Significant improvements in the fiber/matrix bonding were achieved by employed sizing chemistry in order to achieve multifunctional interphases. The pure silane coupling agents provide the best performance for all matrices investigated. However, an additional film former has to be added in order to achieve fiber processing. Film formers compatible to the matrices investigated were adapted. The consolidation behavior during isothermal molding was investigated for polypropylene matrix. Different fiber volume contents could be realized and the resulting mechanical properties were tested. View Full-Text
Keywords: commingled yarns; Polypropylene; Polyamide; Polylactic Acid; sizing; glass fibers; thermoplastic composites; multifunctional interphase commingled yarns; Polypropylene; Polyamide; Polylactic Acid; sizing; glass fibers; thermoplastic composites; multifunctional interphase

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Wiegand, N.; Mäder, E. Commingled Yarn Spinning for Thermoplastic/Glass Fiber Composites. Fibers 2017, 5, 26.

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