Investigation of the interphase mechanisms and welding behaviour of fast-curing epoxy based composites with co-cured thermoplastic boundary layers
Author (Corporation)
Publication date
12/2020
Typ of student thesis
Course of study
Collections
Type
01A - Journal article
Editors
Editor (Corporation)
Supervisor
Parent work
Composites Part A: Applied Science and Manufacturing
Special issue
DOI of the original publication
Link
Series
Series number
Volume
139
Issue / Number
Pages / Duration
Patent number
Publisher / Publishing institution
Elsevier
Place of publication / Event location
Edition
Version
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Abstract
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.
Keywords
Subject (DDC)
620 - Ingenieurwissenschaften und Maschinenbau
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ISBN
ISSN
1359-835X
1878-5840
1878-5840
Language
English
Created during FHNW affiliation
Yes
Strategic action fields FHNW
Publication status
Published
Review
Peer review of the complete publication
Open access category
Hybrid
License
Citation
ZWEIFEL, Lucian und Christian BRAUNER, 2020. Investigation of the interphase mechanisms and welding behaviour of fast-curing epoxy based composites with co-cured thermoplastic boundary layers. Composites Part A: Applied Science and Manufacturing. Dezember 2020. Bd. 139. DOI 10.1016/j.compositesa.2020.106120. Verfügbar unter: https://doi.org/10.26041/fhnw-4595