Investigation of the interphase mechanisms and welding behaviour of fast-curing epoxy based composites with co-cured thermoplastic boundary layers

Logo des Projekt
DOI der Originalpublikation
URI
https://irf.fhnw.ch/handle/11654/34289
Projekttyp
Ausbildung
Projektbeginn
10.09.2018
Projektende
30.01.2019
Projektstatus
abgeschlossen
Projektkontakt
Projektmanager:in
Beteiligte
Beschreibung
Link
Während FHNW Zugehörigkeit erstellt
Yes
Zukunftsfelder FHNW
Hochschule
Hochschule für Technik und Umwelt FHNW
Institut
Institut für Kunststofftechnik
Finanziert durch
Projektpartner
Auftraggeberschaft
SAP Referenz
Schlagwörter
Fachgebiet (DDC)
620 - Ingenieurwissenschaften und Maschinenbau
Publikationen
Vorschaubild
Publikation
Investigation of the interphase mechanisms and welding behaviour of fast-curing epoxy based composites with co-cured thermoplastic boundary layers
(Elsevier, 12/2020) Zweifel, Lucian; Brauner, Christian
This study focuses on investigating thermoplastic polymers and their interphase behaviour with the fast-curing epoxy system Araldite LY3585/Aradur 3475. The three compatible thermoplastic polymers poly(methyl methacrylate) (PMMA), amorphous polyamide (PA12TR90), and poly(hydroxy ether) (phenoxy) were chosen to determine their affinity and interphase formation with the epoxy system. The final concept involves the use of a thermoplastic as a boundary layer on top of the epoxy to establish a connection between two joined parts by resistance welding. The thermoplastic boundary layer was generated by co-curing during the curing process. The experiments resulted in a high compatibility between phenoxy and PMMA in the selected epoxy system which leads to excellent mechanical properties after welding. Phenoxy showed the strongest joints, with an average lap shear strength of 25 MPa, demonstrating the high potential of this joining technique for industrial applications in the automotive and wind energy fields.
01A - Beitrag in wissenschaftlicher Zeitschrift