Approaching Polycarbonate as an LFT-D Material: Processing and Mechanical Properties

Schelleis, Christoph; Scheuring, Benedikt M.; Liebig, Wilfried V.; Hrymak, Andrew N.; Henning, Frank

doi:10.3390/polym15092041

Open AccessArticle

Approaching Polycarbonate as an LFT-D Material: Processing and Mechanical Properties

by

Christoph Schelleis

^1,2,*,†

,

Benedikt M. Scheuring

^3,†

,

Wilfried V. Liebig

³

,

Andrew N. Hrymak

⁴

and

Frank Henning

^1,2

¹

Polymer Engineering, Fraunhofer Institute for Chemical Technology ICT, 76327 Pfinztal, Germany

²

Lightweight Design, Institute of Vehicle Systems Technology, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany

³

Hybrid and Lightweight Materials, Institute for Applied Materials, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany

⁴

Department of Chemical and Biochemical Engineering, Western University, London, ON N6A 3K7, Canada

^*

Author to whom correspondence should be addressed.

^†

These authors contributed equally to this work.

Polymers 2023, 15(9), 2041; https://doi.org/10.3390/polym15092041

Submission received: 30 March 2023 / Revised: 19 April 2023 / Accepted: 20 April 2023 / Published: 25 April 2023

(This article belongs to the Special Issue Manufacturing of Polymer-Matrix Composites)

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Abstract

Long-fiber thermoplastic (LFT) materials compounded via the direct LFT (LFT-D) process are very versatile composites in which polymers and continuous reinforcement fiber can be combined in almost any way. Polycarbonate (PC) as an amorphous thermoplastic matrix system reinforced with glass fibers (GFs) is a promising addition regarding the current development needs, for example battery enclosures for electromobility. Two approaches to the processing and compression molding of PC GF LFT-D materials with various parameter combinations of screw speed and fiber rovings are presented. The resulting fiber lengths averaged around 0.5 mm for all settings. The tensile, bending, Charpy, and impact properties were characterized and discussed in detail. Special attention to the characteristic charge and flow area formed by compression molding of LFT-D materials, as well as sample orientation was given. The tensile modulus was 10 GPa, while the strength surpassed 125 MPa. The flexural modulus can reach up to 11 GPa, and the flexural strength reached up to 216 MPa. PC GF LFT-D is a viable addition to the LFT-D process, exhibiting good mechanical properties and stable processability.

Keywords: polycarbonate; glass fiber; LFT-D; composite; fiber length; mechanical properties; specific mechanical energy; process parameter selection

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MDPI and ACS Style

Schelleis, C.; Scheuring, B.M.; Liebig, W.V.; Hrymak, A.N.; Henning, F. Approaching Polycarbonate as an LFT-D Material: Processing and Mechanical Properties. Polymers 2023, 15, 2041. https://doi.org/10.3390/polym15092041

AMA Style

Schelleis C, Scheuring BM, Liebig WV, Hrymak AN, Henning F. Approaching Polycarbonate as an LFT-D Material: Processing and Mechanical Properties. Polymers. 2023; 15(9):2041. https://doi.org/10.3390/polym15092041

Chicago/Turabian Style

Schelleis, Christoph, Benedikt M. Scheuring, Wilfried V. Liebig, Andrew N. Hrymak, and Frank Henning. 2023. "Approaching Polycarbonate as an LFT-D Material: Processing and Mechanical Properties" Polymers 15, no. 9: 2041. https://doi.org/10.3390/polym15092041

APA Style

Schelleis, C., Scheuring, B. M., Liebig, W. V., Hrymak, A. N., & Henning, F. (2023). Approaching Polycarbonate as an LFT-D Material: Processing and Mechanical Properties. Polymers, 15(9), 2041. https://doi.org/10.3390/polym15092041

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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