Prefinished Metal Polymer Hybrid Parts

Authors

  • Ines Kuehnert Leibniz-Institut für Polymerforschung Dresden e. V.
  • Michaela Gedan-Smolka Leibniz-Institut für Polymerforschung Dresden e. V.
  • Matthieu Fischer Leibniz-Institut für Polymerforschung Dresden e. V.
  • Peter Scholz Fraunhofer-Institut für Werkzeugmaschinen und Umformtechnik (IWU)
  • Dirk Landgrebe Fraunhofer-Institut für Werkzeugmaschinen und Umformtechnik (IWU), Technische Universität Chemnitz
  • Didier Garray The Collective Center for the Belgian Technology Industry (Sirris)

DOI:

https://doi.org/10.21935/tls.v1i2.86

Abstract

In this study, the shaping and assembly behavior of adhesive polymer-metal-composites was investigated in an international cooperation using two step curable uretdione-polyester-based powder coatings (IPF development) which acts simultaneously as a reactive adhesive agent and as a high quality surface finish. To create the composite, a thermoplastic polyurethane (TPU) layer with good compatibility to the powder coating was over-molded onto a powder coated aluminum substrate. A polyamide (PA6) layer was over-molded on to the TPU layer to create a stiff composite structure with possibilities for further functionalization. The TPU-layer in between the metal substrate and the polymer top layer acts as a stress and strain compensation layer. These loads are caused by thermal expansion (under fluctuating temperatures) and external forces/deformation. Another key feature of the composite is the innovative process chain. The powder coating can resist high deformation and therefore the coating is suitable for a future application on to a metal substrate using a coil coating procedure. In addition, the coil could be easily implemented into a production line as a semi-finished product. The prefinished coated metal substrate could be formed (e.g. incremental forming, deep drawing) and inserted in the over-molding procedure. This overall shortened process chain allows not only an effective fabrication of pre-coated semi-finished materials and polymer-metal-joints in high quantities by saving process steps (e.g. cleaning steps, glue application) but also a higher versatility in the following composite production.

Author Biographies

Ines Kuehnert, Leibniz-Institut für Polymerforschung Dresden e. V.

Acting Head of Department for the Department of Processing

Group Leader for the Shaping Processes and Simulation Group

 

Michaela Gedan-Smolka, Leibniz-Institut für Polymerforschung Dresden e. V.

Department of Reactive Processing

Head of Working Group Thermo-Controlled Reactions

Matthieu Fischer, Leibniz-Institut für Polymerforschung Dresden e. V.

 

 

Dirk Landgrebe, Fraunhofer-Institut für Werkzeugmaschinen und Umformtechnik (IWU), Technische Universität Chemnitz

Director, Forming Technology and Joining, Fraunhofer-Institut für Werkzeugmaschinen und Umformtechnik

Professorship for Forming and Joining, Institute for Machine, Tools and Production Processes, Faculty of Mechanical Engineering, Technische Universität Chemnitz

Didier Garray, The Collective Center for the Belgian Technology Industry (Sirris)

Principal Engineer

Tooling and Plastic & Hybrid Materials Processing

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Published

2018-03-02

Issue

Vol. 1 No. 2 (2017): Special Issue: 3rd International MERGE Technologies Conference (IMTC), 21st - 22nd September 2017, Chemnitz

Section

Articles

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