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Basic material and technology investigations for material bonded hybrids by continuous hybrid profile fabrication

: Schubert, K.; Gedan-Smolka, M.; Marschner, A.; Rietzschel, T.; Uhlig, K.; Löpitz, D.; Wagner, D.; Knobloch, M.

Fulltext ()

Institute of Physics -IOP-, London:
Modern Materials and Manufacturing, MMM 2021 : 27th-29th April 2021, Tallinn, Estonia, virtual conference
Bristol: IOP Publishing, 2021 (IOP conference series. Materials science and engineering 1140)
Art. 012030, 7 pp.
Conference "Modern Materials and Manufacturing" (MMM) <2021, Online>
International DAAAM Baltic Conference <13, 2021, Online>
International Baltic Conference on Engineering Materials & Tribology (BALTMATTRIB) <29, 2021, Online>
Conference Paper, Electronic Publication
Fraunhofer IWU ()
hybrid; Pultrusion; FKV; Metall; Oberflächenbeschichtung

The development of multi-material hybrids by injection molding has been studied very intensively at the IPF in the past. For that, a material bonding between the different substrates was achieved by using a newly eveloped two-step curing powder coating material as latent reactive adhesive. The aim of the project “Hybrid Pultrusion” was to perform a novel approach for the fabrication of material bonded metal-plastic joints profiles) in a modified pultrusion process. Therefore, powder pre-coated steel coil is combined with a glass-fiber reinforced epoxy resin matrix. For initial basic studies, the impregnated fiber material has been applied on the pre-coated steel sheets using the Resin Transfer Molding process (RTMprocess). It was proved via lap shear tests, that this procedure resulted in very high adhesive strengths up to 35 MPa resulting from the formation of a covalent matrix-steel bonding as well. In addition, the failure mechanism was subsequently studied. Furthermore, by adapting the successful material combination to the pultrusion process it was demonstrated that material bonded hybrids can be achieved even under these continuous processing conditions.