Co-curing behaviour of thermoset composites with a thermoplastic boundary layer for welding purposes
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Publication date
17.03.2020
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01A - Journal article
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Advanced Composites Letters
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Volume
29
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Abstract
The primary objective of this study is to determine the interphase behaviour of a thermoset epoxy resin that is commercially used for carbon fibre–reinforced composite materials in aerospace structures and a suitable thermoplastic material that can be used as a boundary layer. The thermoplastic boundary layer will be used for welding purposes to join structural components with a fraction of the effort compared to conventional gluing processes. In this study, the interphase formation of an epoxy resin with several thermoplastic materials, namely, polyetheretherketone, polyvinylidenfluoride, polyphenylensulfide and polyetherimide (PEI), is studied via hot-stage microscope experiments. Based on this study, PEI was selected, and a detailed study was performed to determine the dependency of dissolution, diffusion and phase separation mechanisms under various isothermal conditions. Additionally, the welding behaviour was investigated by a resistance welding rig whereby the process parameters were statistically varied to optimize the lap shear strength. The results of this study will enable a statement about the interphase development, the morphology and the mechanical properties which is a key element of fully understanding the process.
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620 - Ingenieurwissenschaften und Maschinenbau
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ISBN
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0963-6935
2633-366X
2633-366X
Language
English
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Yes
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Published
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Citation
BRAUNER, Christian, Sawsane NAKOUZI, Lucian ZWEIFEL und Jens TRESCH, 2020. Co-curing behaviour of thermoset composites with a thermoplastic boundary layer for welding purposes. Advanced Composites Letters. 17 März 2020. Bd. 29. DOI 10.1177/2633366X20902777. Verfügbar unter: https://doi.org/10.26041/fhnw-4488